CN112690866A - Full-automatic orthopedics saw - Google Patents

Abstract

The invention discloses a full-automatic orthopedic saw, which comprises a handheld system, a lifting system and a cutting system, wherein a doctor holds the handheld system to move the orthopedic saw to the position near a part needing surgery, the cutting system controls a blade belt to rotate and cuts bones by matching with a propelling motor and a screw rod of the handheld system, when a wider blade is needed, the lifting system controls the other cutting system to descend, so that the two cutting systems are aligned, thereby enlarging the width of the blade belt, enlarging the width of the cut, arranging a tensioning system on each cutting system to tension the blade belt, preventing the problems of inaccurate cutting position, difficult cutting and the like caused by the lack of tensioning of the blade belt, realizing the range cutting of the blade belt used by the invention, and the cutting efficiency is high, the operation efficiency is greatly improved, and unstable factors caused by manual cutting of people are reduced.

Description

Full-automatic orthopedics saw

Technical Field

The invention relates to the technical field of medical appliances, in particular to a full-automatic orthopedic saw.

Background

In the medical accident treatment, when a patient has a serious condition, the patient needs to be amputated, and the amputation is usually performed by using an orthopedic saw, but the normal orthopedic saw is difficult to operate, needs a large amount of manpower, and is easy to have a skew cut and the like. Application No.: CN201220508611.3 discloses an orthopedic saw, but the tool still needs manual force to operate, and cannot realize automatic operation.

Disclosure of Invention

Aiming at the technical problem, the invention provides a full-automatic orthopedic saw which comprises a handheld system, a lifting system and a cutting system.

The handheld system comprises a propelling frame and a propelling screw rod; the lifting system comprises a propelling seat, a connecting frame, an outer guide rail and a front guide rail; the cutting system comprises a cutting frame; the handheld system is provided with a propelling frame, a propelling seat and the propelling frame are slidably mounted, the propelling seat and the propelling screw rod form threaded fit, a cutting frame in the cutting system on the sliding side is fixedly mounted with an outer guide rail and a front guide rail, and a cutting frame in the cutting system on the fixed side is fixedly mounted with a connecting frame. The handheld system further comprises a handheld seat and a propelling motor, the propelling frame is fixedly installed on the handheld seat, the propelling motor is fixedly installed on the propelling frame, one end of the propelling screw rod is fixedly installed on a motor shaft of the propelling motor, and the other end of the propelling screw rod is rotatably installed on the propelling frame.

Furthermore, the lifting system further comprises a rear descending block, a front descending block, an outer descending block, a descending rack, a descending motor, a descending gear, a side guard plate and a front guard plate, the connecting frame is fixedly installed on the front guard plate, the rear descending block, the front descending block and the outer descending block are fixedly installed below the propulsion seat, the descending rack is fixedly installed below the propulsion seat, the descending motor is fixedly installed on the rear descending block, the descending gear is fixedly installed on a motor shaft of the descending motor, the descending gear is meshed with the descending rack, the side guard plate is fixedly installed on the outer sides of the front descending block and the rear descending block, the front guard plate is fixedly installed on the outer side of the cutting frame, the outer guide rail is slidably installed with the rear descending block, the front guide rail is slidably installed with the front descending block, and the outer descending block is slidably installed with the side guard plate.

Furthermore, the cutting system also comprises cutting teeth, a cutting belt, a driven wheel, a driving wheel, a tensioning wheel, an X-shaped frame, a tensioning belt, a limiting sleeve, a rear tensioning wheel, a tensioning transmission belt, a tensioning driven gear, a tensioning upper wheel, lubricating oil, a tensioning driving wheel, a tensioning shaft, a driven bevel gear, a main bevel gear, a tensioning motor, a bearing cover, a driving motor, a driving bevel gear, a driven bevel gear, a driving transmission wheel, an embedded transmission belt, an outer gear ring, an inner transmission wheel, a planetary internal gear, a planetary gear, a left connecting seat, a tension spring, a right connecting seat, a rotating disc, a transmission belt, an upper gear, an upper shaft and a lower gear, wherein the driving wheel and the driven wheel are rotatably installed on the cutting frame and the bearing cover through rolling bearings, the cutting belt is wound on the outer side of the driven wheel and the driving wheel, the cutting teeth are wound on the outer side of the, the tensioning belt is wound on the outer sides of the two X-shaped frames, the limiting sleeves are fixedly arranged on the outer sides of the X-shaped frames, the rear tensioning wheel is fixedly arranged on the X-shaped frames, the tensioning upper wheel is rotatably arranged on the cutting frame, the tensioning driven gear is fixedly arranged on the tensioning upper wheel, the tensioning transmission belt is wound on the outer sides of the tensioning upper wheel and the rear tensioning wheel, lubricating oil is filled between meshing parts of the gears, the tensioning shaft is rotatably arranged on the cutting frame, the tensioning driving wheel and the driven bevel gear are fixedly arranged on the tensioning shaft, the tensioning driving wheel is meshed with the tensioning driven gear, the tensioning motor is fixedly arranged on the cutting frame, the main bevel gear is meshed with the driven bevel gear, the bearing cover is fixedly arranged on the cutting frame, the driving motor is fixedly arranged on the cutting frame, the driving bevel gear is fixedly arranged on a motor shaft of the driving motor, the driving transmission wheel is rotatably arranged on the, the inner gear is fixedly arranged on the inner driving wheel, the embedded driving belt is wound on the outer sides of the inner driving wheel and the driving wheel, the planetary gear is rotatably arranged on the cutting frame, the outer gear ring is rotatably arranged on the cutting frame, the planetary inner gear is meshed with the planetary gear, the planetary gear is meshed with the outer gear ring, the left connecting seat is rotatably arranged on the outer gear ring, the right connecting seat is rotatably arranged on the rotating disc, the rotating disc is rotatably arranged on the cutting frame, one end of a tension spring is fixedly arranged on the left connecting seat, the other end of the tension spring is rotatably arranged on the right connecting seat, the upper shaft is rotatably arranged on the cutting frame, the driving belt is wound on the outer sides of the rotating disc and the upper shaft, the upper gear is fixedly arranged on the upper shaft, the lower gear is fixedly arranged on the driving wheel.

Furthermore, the propelling seat and the propelling frame form sliding fit, the front guide rail and the front descending block form sliding fit, and the rear descending block and the outer guide rail form sliding fit.

Further, action wheel, form normal running fit from driving wheel and cutting frame, the tensioning band forms normal running fit with the tensioning band, X type frame forms normal running fit with cutting frame, the tensioning is taken turns to form normal running fit with cutting frame on, the tensioning forms normal running fit with cutting frame, the tensioning axle forms normal running fit with cutting frame, the initiative drive wheel forms normal running fit with cutting frame, interior drive wheel forms normal running fit with cutting frame, left connecting seat forms normal running fit with the outer ring gear, right connecting seat forms normal running fit with the rolling disc, the rolling disc forms normal running fit with cutting frame, the upper shaft forms normal running fit with cutting frame.

Furthermore, two groups of X-shaped frames are arranged on the inner side of the cutting belt, and four tensioning wheels are arranged on the X-shaped frames.

Furthermore, two groups of extension springs are arranged between the left connecting seat and the right connecting seat.

Compared with the prior art, the invention has the beneficial effects that: (1) the invention can realize full-automatic cutting and feeding actions on the bone part needing to be operated; (2) the invention is provided with two cutting systems, one cutting system is fixed in position, and the other cutting system can be lifted to control the cutting width; (3) the cutting system is provided with the two tensioning devices, so that the cutter wheel is ensured to be in a tensioning state during cutting.

Drawings

Fig. 1 and 2 are schematic structural diagrams of the invention.

Fig. 3 is a schematic structural diagram of the handheld system of the invention.

Fig. 4 and 5 are schematic structural diagrams of the lifting system of the invention.

Fig. 6 and 7 are schematic structural diagrams of the cutting system of the invention.

Reference numerals: 1-a handheld system; 2-a lifting system; 3-a cutting system; 101-a handheld base; 102-a propulsion motor; 103-a propulsion frame; 104-a propelling screw rod; 201-a propulsion seat; 202-a connecting frame; 203-rear descending block; 204-front descending block; 205-outer drop block; 206-lowering rack; 207-lowering motor; 208-a lowering gear; 209-side guard plate; 210-a front baffle; 211-outer guide rail; 212-front rail; 301-a cutting frame; 302-cutting teeth; 303-cutting the tape; 304-a driven wheel; 305-a driving wheel; 306-a tensioner; 307-X type frame; 308-tension belt; 309-a stop collar; 310-a post-tensioning wheel; 311-tensioning the drive belt; 312-tensioning the slave gear; 313-tension upper wheel; 314-lubricating oil; 315-tensioning drive wheel; 316-tensioning shaft; 317-slave bevel gear; 318-main bevel gear; 319-tensioning motor; 320-a bearing cap; 321-an active motor; 322-drive bevel gear; 323-driven bevel gear; 324-a driving transmission wheel; 325-embedded transmission belt; 326-outer ring gear; 327-an inner drive wheel; 328-planetary internal gear; 329-planetary gear; 330-left connecting seat; 331-extension spring; 332-right connecting seat; 333-rotating disk; 334-driving belts; 335 — upper gear; 336-upper shaft; 337-lower gear.

Detailed Description

The present invention will be further described with reference to specific examples, which are illustrative of the invention and are not to be construed as limiting the invention.

Example (b): the fully automatic orthopedic saw shown in fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, fig. 6 and fig. 7 comprises ahandheld system 1, alifting system 2 and acutting system 3.

Thehandheld system 1 comprises apropelling frame 103 and apropelling screw rod 104; thelifting system 2 comprises apropulsion seat 201, a connectingframe 202, anouter guide rail 211 and afront guide rail 212; thecutting system 3 comprises acutting frame 301;

thehandheld system 1 is provided with a pushingframe 103, a pushingseat 201 and the pushingframe 103 are installed in a sliding mode, the pushingseat 201 and a pushingscrew rod 104 form threaded fit, acutting frame 301 in thecutting system 3 on the sliding side is fixedly installed with anouter guide rail 211 and afront guide rail 212, and thecutting frame 301 in thecutting system 3 on the fixed side is fixedly installed with a connectingframe 202.

Thehandheld system 1 further comprises ahandheld base 101 and apropelling motor 102, thepropelling frame 103 is fixedly mounted on thehandheld base 101, thepropelling motor 102 is fixedly mounted on thepropelling frame 103, one end of thepropelling screw rod 104 is fixedly mounted on a motor shaft of thepropelling motor 102, and the other end of the propelling screw rod is rotatably mounted on thepropelling frame 103. When the doctor holds 101 the hand-held seat close to the bone accessory to be cut, thepropulsion motor 102 rotates to control thelifting system 2 to slide back and forth along thepropulsion frame 103 during cutting.

Thelifting system 2 further comprises a rear descendingblock 203, a front descendingblock 204, an outer descendingblock 205, a descendingrack 206, a descendingmotor 207, a descendinggear 208, aside guard plate 209 and afront guard plate 210, wherein the connectingframe 202 is fixedly installed on thefront guard plate 210, the rear descendingblock 203, the front descendingblock 204 and the outer descendingblock 205 are fixedly installed below the pushingseat 201, the descendingrack 206 is fixedly installed below the pushingseat 201, the descendingmotor 207 is fixedly installed on the rear descendingblock 203, thedescending gear 208 is fixedly installed on a motor shaft of the descendingmotor 207, the descendinggear 208 is meshed with the descendingrack 206, theside guard plate 209 is fixedly installed on the outer sides of the front descendingblock 204 and the rear descendingblock 203, thefront guard plate 210 is fixedly installed on the outer side of thecutting frame 301, theouter guide rail 211 is slidably installed with the rear descendingblock 203, thefront guide rail 212 is slidably installed with the front descendingblock 204, and the outer descendingblock 205 is slidably installed with the. The descendingmotor 207 controls thefront guide rail 212 and theouter guide rail 211 to slide up and down relative to the front descendingblock 204 and the rear descendingblock 203 in a rotating manner, so that thelifting 3 can be lifted and lowered for adjustment.

Thecutting system 3 further comprisescutting teeth 302, acutting belt 303, a drivenwheel 304, adriving wheel 305, atension wheel 306, anX-shaped frame 307, atension belt 308, alimit sleeve 309, arear tension wheel 310, atension transmission belt 311, a tension drivengear 312, a tensionupper wheel 313, lubricatingoil 314, atension driving wheel 315, atension shaft 316, a drivenbevel gear 317, amain bevel gear 318, atension motor 319, abearing cover 320, adriving motor 321, adriving bevel gear 322, a drivenbevel gear 323, adriving transmission wheel 324, an embeddedtransmission belt 325, anouter toothed ring 326, aninner transmission wheel 327, a planetaryinner gear 328, aplanetary gear 329, a left connectingseat 330, atension spring 331, a right connectingseat 332, a rotatingdisc 333, atransmission belt 334, anupper gear 335, anupper shaft 336 and alower gear 337, wherein thedriving wheel 305 and the drivenwheel 304 are rotatably mounted on thecutting frame 301 and thebearing cover 320 through rolling bearings, the cutting belt, thecutting teeth 302 are wound outside thecutting belt 303, theX-shaped frames 307 are rotatably arranged on thecutting frame 301, thetensioning wheels 306 are rotatably arranged on theX-shaped frames 307, thetensioning belts 308 are wound outside the twoX-shaped frames 307, thestop sleeves 309 are fixedly arranged outside theX-shaped frames 307, therear tensioning wheels 310 are fixedly arranged on theX-shaped frames 307, the tensioningupper wheels 313 are rotatably arranged on thecutting frame 301, the tensioning drivengears 312 are fixedly arranged on the tensioningupper wheels 313, thetensioning transmission belt 311 is wound outside the tensioningupper wheels 313 and therear tensioning wheels 310, lubricatingoil 314 is arranged between meshing of the gears, thetensioning shaft 316 is rotatably arranged on thecutting frame 301, the tensioningdriving wheels 315 and the drivenbevel gears 317 are fixedly arranged on thetensioning shaft 316, the tensioningdriving wheels 315 are meshed with the tensioning drivengears 312, thetensioning motor 319 is fixedly arranged on thecutting frame 301, themain bevel gears 318 are fixedly arranged on thetensioning motor 319, themain bevel gears 318 are meshed, thebearing cover 320 is fixedly arranged on thecutting frame 301, the drivingmotor 321 is fixedly arranged on thecutting frame 301, thedriving bevel gear 322 is fixedly arranged on a motor shaft of thedriving motor 321, thedriving transmission wheel 324 is rotatably arranged on thecutting frame 301, the drivenbevel gear 323 is fixedly arranged on thedriving transmission wheel 324, the drivenbevel gear 323 is meshed with thedriving bevel gear 322, theinner transmission wheel 327 is rotatably arranged on thecutting frame 301, the planetaryinternal gear 328 is fixedly arranged on theinner transmission wheel 327, the embeddedtransmission belt 325 is wound on the outer sides of theinner transmission wheel 327 and thedriving transmission wheel 324, theplanetary gear 329 is rotatably arranged on thecutting frame 301, the outertoothed ring 326 is rotatably arranged on thecutting frame 301, the planetaryinternal gear 328 is meshed with theplanetary gear 329, theplanetary gear 329 is meshed with the outertoothed ring 326, the left connectingseat 330 is rotatably arranged on theouter toothed ring 326, the right connectingseat 332 is rotatably arranged, one end of anextension spring 331 is fixedly arranged on the left connectingseat 330, the other end of the extension spring is rotatably arranged on the right connectingseat 332, anupper shaft 336 is rotatably arranged on thecutting frame 301, atransmission belt 334 is wound on the outer sides of the rotatingdisc 333 and theupper shaft 336, anupper gear 335 is fixedly arranged on theupper shaft 336, alower gear 337 is fixedly arranged on thedriving wheel 305, and thelower gear 337 is meshed with theupper gear 335. The drivingmotor 321 rotates to control thedriving transmission wheel 324 to rotate, so as to control theinner transmission wheel 327 to rotate, so as to drive the rotatingdisc 333 to rotate, so as to realize the rotation of thedriving wheel 305, so as to control thecutting teeth 302 to cut the affected part, when thecutting belt 303 is loosened, the tensioningmotor 319 rotates to control thetensioning shaft 316 to rotate, so as to realize the rotation of theX-shaped frame 307, so that thetensioning wheel 306 tensions thecutting belt 303.

The pushingseat 201 and the pushingframe 103 form a sliding fit, thefront guide rail 212 and the front descendingblock 204 form a sliding fit, and the rear descendingblock 203 and theouter guide rail 211 form a sliding fit.

Thedriving wheel 305, the drivenwheel 304 and thecutting frame 301 form a rotating fit, thetension belt 308 and thetension belt 308 form a rotating fit, theX-shaped frame 307 and thecutting frame 301 form a rotating fit, the tensionupper wheel 313 and thecutting frame 301 form a rotating fit, thetension shaft 316 and thecutting frame 301 form a rotating fit, thedriving transmission wheel 324 and thecutting frame 301 form a rotating fit, theinner transmission wheel 327 and thecutting frame 301 form a rotating fit, the left connectingseat 330 and the outertoothed ring 326 form a rotating fit, the right connectingseat 332 and the rotatingdisc 333 form a rotating fit, therotating disc 333 and thecutting frame 301 form a rotating fit, and theupper shaft 336 and thecutting frame 301 form a rotating fit.

Two groups ofX-shaped frames 307 are arranged on the inner side of thecutting belt 303, and fourtension wheels 306 are arranged on theX-shaped frames 307. Two sets ofextension springs 331 are disposed between the left and right connectingbases 330 and 332.

Claims (8)

1. The utility model provides a full-automatic orthopedics saw, includes handheld system (1), operating system (2), cutting system (3), its characterized in that:

the handheld system 1 comprises a propelling frame (103) and a propelling screw rod (104);

the lifting system (2) comprises a propelling seat (201), a connecting frame (202), an outer guide rail (211) and a front guide rail (212);

the cutting system (3) comprises a cutting frame (301);

the handheld system (1) is provided with a propelling frame (103), a propelling seat (201) and the propelling frame (103) are installed in a sliding mode, the propelling seat (201) and a propelling screw rod (104) form threaded fit, a cutting frame (301) in the cutting system (3) on the sliding side is fixedly installed with an outer guide rail (211) and a front guide rail (212), and the cutting frame (301) in the cutting system (3) on the fixed side is fixedly installed with a connecting frame (202).

2. A fully automatic orthopaedic saw according to claim 1, wherein: the handheld system (1) further comprises a handheld base (101) and a propelling motor (102), the propelling frame (103) is fixedly installed on the handheld base (101), the propelling motor (102) is fixedly installed on the propelling frame (103), one end of the propelling screw rod (104) is fixedly installed on a motor shaft of the propelling motor (102), and the other end of the propelling screw rod is rotatably installed on the propelling frame (103).

3. A fully automatic orthopaedic saw according to claim 1, wherein: the lifting system (2) further comprises a rear descending block (203), a front descending block (204), an outer descending block (205), a descending rack (206), a descending motor (207), a descending gear (208), a side guard plate (209) and a front baffle plate (210), wherein the connecting frame (202) is fixedly installed on the front baffle plate (210), the rear descending block (203), the front descending block (204) and the outer descending block (205) are fixedly installed below the pushing seat (201), the descending rack (206) is fixedly installed below the pushing seat (201), the descending motor (207) is fixedly installed on the rear descending block (203), the descending gear (208) is fixedly installed on a motor shaft of the descending motor (207), the descending gear (208) is meshed with the descending rack (206), the side guard plate (209) is fixedly installed on the outer sides of the front descending block (204) and the rear descending block (203), the front baffle plate (210) is fixedly installed on the outer side of the cutting frame (301), the outer guide rail (211) is slidably mounted with the rear descending block (203), the front guide rail (212) is slidably mounted with the front descending block (204), and the outer descending block (205) is slidably mounted with the side guard plate (209).

4. A fully automatic orthopaedic saw according to claim 1, wherein: the cutting system (3) further comprises cutting teeth 302, a cutting belt (303), a driven wheel (304), a driving wheel (305), a tensioning wheel (306), an X-shaped frame (307), a tensioning belt (308), a limiting sleeve (309), a rear tensioning wheel (310), a tensioning transmission belt (311), a tensioning driven gear (312), a tensioning upper wheel (313), lubricating oil (314), a tensioning driving wheel (315), a tensioning shaft (316), a driven bevel gear (317), a main bevel gear (318), a tensioning motor (319), a bearing cover (320), a driving motor (321), a driving bevel gear (322), a driven bevel gear (323), a driving transmission wheel (324), an embedded transmission belt (325), an outer toothed ring (326), an inner transmission wheel (327), a planetary internal gear (328), a planetary gear (329), a left connecting seat (330), a tensioning spring (331), a right connecting seat (332), a rotating disc (333), a rotating disc (, The cutting machine comprises a driving wheel (334), an upper gear (335), an upper shaft (336) and a lower gear (337), wherein the driving wheel (305) and the driven wheel (304) are rotatably installed on a cutting frame (301) and a bearing cover (320) through rolling bearings, the cutting belt (303) is wound on the outer sides of the driven wheel (304) and the driving wheel (305), the cutting teeth (302) are wound on the outer sides of the cutting belt (303), an X-shaped frame (307) is rotatably installed on the cutting frame (301), a tension wheel (306) is rotatably installed on the X-shaped frame (307), a tension belt (308) is wound on the outer sides of the two X-shaped frames (307), a limit sleeve (309) is fixedly installed on the outer side of the X-shaped frame (307), a rear tension wheel (310) is fixedly installed on the X-shaped frame (307), the tension upper wheel (313) is rotatably installed on the cutting frame (301), a tension slave gear (312) is fixedly installed on the tension upper wheel (313) and is wound on the outer sides of the tension driving belt (311, lubricating oil (314) is arranged between meshing of all gears, a tensioning shaft (316) is rotatably arranged on a cutting frame (301), a tensioning driving wheel (315) and a driven bevel gear (317) are fixedly arranged on the tensioning shaft (316), the tensioning driving wheel (315) is meshed with a tensioning driven gear (312), a tensioning motor (319) is fixedly arranged on the cutting frame (301), a main bevel gear (318) is fixedly arranged on the tensioning motor (319), the main bevel gear (318) is meshed with the driven bevel gear (317), a bearing cover (320) is fixedly arranged on the cutting frame (301), a driving motor (321) is fixedly arranged on the cutting frame (301), a driving bevel gear (322) is fixedly arranged on a motor shaft of the driving motor (321), a driving transmission wheel (324) is rotatably arranged on the cutting frame (301), a driven bevel gear (323) is fixedly arranged on the driving transmission wheel (324), and the driven bevel gear (323) is meshed with the driving bevel gear (322), an inner driving wheel (327) is rotatably arranged on a cutting frame (301), a planetary internal gear (328) is fixedly arranged on the inner driving wheel (327), an embedded driving belt (325) is wound on the outer sides of the inner driving wheel (327) and a driving wheel (324), a planetary gear (329) is rotatably arranged on the cutting frame (301), an outer toothed ring (326) is rotatably arranged on the cutting frame (301), the planetary internal gear (328) is meshed with the planetary gear (329), the planetary gear (329) is meshed with the outer toothed ring (326), a left connecting seat (330) is rotatably arranged on the outer toothed ring (326), a right connecting seat (332) is rotatably arranged on a rotating disc (333), the rotating disc (333) is rotatably arranged on the cutting frame (301), one end of a tension spring (331) is fixedly arranged on the left connecting seat (330), the other end of the tension spring is rotatably arranged on the right connecting seat (332), and an upper shaft (336) is rotatably arranged on the cutting frame (301, a transmission belt (334) is wound on the outer sides of the rotating disc (333) and the upper shaft (336), an upper gear (335) is fixedly installed on the upper shaft (336), a lower gear (337) is fixedly installed on the driving wheel (305), and the lower gear (337) is meshed with the upper gear 335.

5. A fully automatic orthopaedic saw according to claim 1, wherein: the pushing seat (201) and the pushing frame (103) form sliding fit, the front guide rail (212) and the front descending block (204) form sliding fit, and the rear descending block (203) and the outer guide rail (211) form sliding fit.

6. A fully automatic orthopaedic saw according to claim 1, wherein: the cutting machine is characterized in that the driving wheel (305) and the driven wheel (304) are in running fit with the cutting frame (301), the tensioning belt (308) is in running fit with the tensioning belt (308), the X-shaped frame (307) is in running fit with the cutting frame (301), the tensioning upper wheel (313) is in running fit with the cutting frame (301), the tensioning shaft (316) is in running fit with the cutting frame (301), the driving transmission wheel (324) is in running fit with the cutting frame (301), the inner transmission wheel (327) is in running fit with the cutting frame (301), the left connecting seat (330) is in running fit with the outer toothed ring (326), the right connecting seat (332) is in running fit with the rotating disc (333), the rotating disc (333) is in running fit with the cutting frame (301), and the upper shaft (336) is in running fit with the cutting frame (301).

7. A fully automatic orthopaedic saw according to claim 1, wherein: two groups of X-shaped frames 307 are arranged on the inner side of the cutting belt 303, and four tension wheels 306 are arranged on the X-shaped frames 307.

8. A fully automatic orthopaedic saw according to claim 1, wherein: two groups of extension springs (331) are arranged between the left connecting seat (330) and the right connecting seat (332).

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