CN212158519U - External stay wire displacement sensor - Google Patents

Abstract

The utility model discloses an external displacement sensor that acts as go-between, through installing displacement sensor that acts as go-between in the 304 stainless steel casing of wall thickness 4mm, the casing possesses the tertiary body of rod, wherein the one-level body of rod is unmovable, the second grade body of rod, the tertiary body of rod all can be freely pulled, the second grade uide bushing, the wear-resisting guidance tape of tetrafluoro bronze material is all installed to the tertiary uide bushing, to the second grade body of rod, the tertiary body of rod plays the support guide effect, the stay cord of displacement sensor that acts as go-between links to each other with the tertiary body of rod, the measuring stroke of external displacement sensor that acts as go-between is 943mm, there is a universal joint device at the sensor afterbody to make the casing have 15 deflection ranges in the upper, lower, left and right directions through the universal joint; the device can adapt to the adverse circumstances in the pit in the colliery, has stronger anti pound, anti falling nature, and measures the stroke and can satisfy most of service conditions, small in size, and the installation scope is wide.

Description

External stay wire displacement sensor

Technical Field

The utility model relates to a displacement sensor technical field particularly, relates to external displacement sensor that acts as go-between.

Background

At present, the traditional built-in displacement sensors cannot be installed due to the fact that the diameter of a telescopic beam and a flashboard oil cylinder of a hydraulic support of a coal mine fully-mechanized mining face is too small, or built-in displacement sensors installed on an equipment train self-moving oil cylinder, a reversed loader self-moving oil cylinder and the like are complex in design and high in cost, and the requirement for measuring the stroke is met.

The prior art lacks a stroke measuring sensor which can be used in a coal mine and is arranged outside an oil cylinder.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an external displacement sensor that acts as go-between, it can be used for the colliery some hydro-cylinders in the pit can not built-in traditional stroke sensor the stroke measure, if measure the colliery combine the flexible stroke of the flexible roof beam of adopting working face hydraulic support and the stroke of receiving of stretching of picture peg, the stroke of receiving of stretching of self-moving equipment moving cylinder can adapt to the colliery adverse circumstances in the pit and can be external use on hydraulic support in the pit or self-moving equipment.

The embodiment of the utility model is realized like this:

an external stay wire displacement sensor is characterized by comprising a mounting plate, a universal lug seat, a universal joint, a box cover, a box body, a second-stage guide sleeve, a third-stage guide sleeve, a stay wire displacement sensor, a first-stage rod body, a second-stage rod body, a third-stage rod body, a second-stage rod guide belt and a third-stage rod guide belt, wherein the box body and the box cover are connected and then integrally fixed to the universal joint, the universal joint is connected to the mounting plate through the universal lug seat, the stay wire displacement sensor is mounted in the box body and packaged through the box cover, one end of the first-stage rod body is connected to the box body, the other end of the first-stage rod body is sleeved with the second-stage guide sleeve, the second-stage rod body is arranged in the first-stage rod body and extends out of the second-stage guide sleeve, the third-stage rod body is arranged in the second-stage rod body and extends, after the third-level rod body is pulled out, the second-level rod body can be pulled out relative to the first-level rod body.

The utility model discloses in the embodiment of the preferred, above-mentioned external displacement sensor that acts as go-between still includes the stopping nut and has the annular eyescrew of pulling of being convenient for, and the stopping nut is fixed at the opening part of tertiary uide bushing and is matchd each other, and the one end of eyescrew is fixed to the one end to the tertiary body of rod, and during the use, handheld eyescrew pulls out the tertiary body of rod, and after the use, the tertiary body of rod is withdrawed, and the stopping nut is fixed to the tertiary uide bushing to it is internal to the primary rod to be convenient for the secondary body of rod.

The utility model discloses in the embodiment of the preferred, above-mentioned external displacement sensor that acts as go-between still includes the second grade stop ring, and the one end of the second grade body of rod and the external diameter of second grade stop ring are established between the external diameter of the second grade body of rod and the internal diameter of the one-level body of rod to with the second grade body of rod card at the second grade uide bushing, ensure that the second grade body of rod is not pulled out the one-level body of rod.

In the preferred embodiment of the present invention, the above-mentioned external stay wire displacement sensor further includes a third-stage anti-return ring, the third-stage anti-return ring is disposed at one end of the third-stage rod body, and the outer diameter of the third-stage anti-return ring is between the outer diameter of the third-stage rod body and the inner diameter of the second-stage rod body, so as to clamp the third-stage rod body in the third-stage guide sleeve, thereby ensuring that the third-stage rod body is not pulled out of the second-stage rod body, and after the third-stage rod body is pulled out.

In the preferred embodiment of the present invention, the external stay wire displacement sensor further includes a secondary rod guide belt and a tertiary rod guide belt, two secondary rod guide belt intervals are disposed in the inner side of the secondary guide sleeve, and the secondary rod guide belt is disposed in the outer side of the secondary rod body to support and guide the secondary rod body, two tertiary rod guide belt intervals are disposed in the inner side of the tertiary guide sleeve, and the tertiary rod guide belt is disposed in the outer side of the tertiary rod body to support and guide the tertiary rod body.

In the preferred embodiment of the present invention, the secondary bar guide strip and the tertiary bar guide strip are made of tetrafluorobronze material to have wear resistance and to facilitate guiding.

In the preferred embodiment of the present invention, the distance that the first-level rod body is pulled out by the second-level rod body and the distance that the second-level rod body is pulled out by the third-level rod body are greater than 800mm, and the box body and the box cover are horizontally and vertically oriented relative to the mounting plate through the universal joint, and the deflection angle is less than or equal to 15 °.

In a preferred embodiment of the present invention, the surface roughness of the second-level rod body and the third-level rod body is less than or equal to ra1.6, so as to ensure smooth pulling of the second-level rod body and the third-level rod body.

In the preferred embodiment of the present invention, the wall thickness of the box body, the first-level rod body and the second-level rod body is greater than or equal to 3mm, so as to have stronger anti-smashing and anti-falling properties and protect the stay wire displacement sensor.

The utility model has the advantages that:

the utility model discloses an install bracing wire displacement sensor in the 304 stainless steel casing of 4mm wall thickness, namely box body and lid, can pull out through the tertiary body of rod relative to the second grade body of rod, the second grade body of rod can pull out relative to the first grade body of rod, play the support guide effect to the second grade body of rod, tertiary body of rod through second grade uide bushing and tertiary uide bushing, drive the bracing wire of bracing wire displacement sensor through the tertiary body of rod, the measuring stroke of external bracing wire displacement sensor is 943mm, make bracing wire displacement sensor have deflection range about 15 ° in upper, lower, left and right directions through the universal joint device, to guarantee that the sensor can not lead to the sensor can not measure the stroke or damage because of the skew of extensible member in moving, can adapt to the adverse circumstances in the pit and can be used in the external colliery on hydraulic support or the self-moving equipment, can be used for the stroke measurement when some hydro-cylinders, is suitable for severe underground environment.

Drawings

To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, and it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope.

Fig. 1 is a schematic side view of the external pull wire displacement sensor of the present invention;

FIG. 2 is a cross-sectional view of the other side of the external pull wire displacement sensor of the present invention;

icon: 1-mounting a plate; 2-universal ear mount; 3-a universal joint; 4-box cover; 5-box body; 6-a secondary guide sleeve; 7-a third-stage guide sleeve; 8-stopping the nut; 9-lifting ring screws; 10-stay wire displacement sensor; 11-secondary anti-back ring; 12-third-level anti-withdrawal ring; 13-a first-level rod body; 14-a secondary rod body; 15-three-level rod body; 16-a secondary rod guide strip; 17-tertiary bar guide strip.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

First embodiment

Referring to fig. 1, the present embodiment provides an external stay wire displacement sensor, which is characterized by comprising a mounting plate 1, a universal ear seat 2, a universal joint 3, a box cover 4, a box body 5, a second-stage guide sleeve 6, a third-stage guide sleeve 7, astop nut 8, alifting ring screw 9, a staywire displacement sensor 10, a second-stage stop ring 11, a third-stage stop ring 12, a first-stage rod body 13, a second-stage rod body 14, a third-stage rod body 15, a second-stagerod guide belt 16 and a third-stagerod guide belt 17, wherein the box body 5 and the box cover 4 are connected and then integrally fixed to the universal joint 3, the universal joint 3 is connected to the mounting plate 1 through the universal ear seat 2, the staywire displacement sensor 10 is installed in the box body 5 and encapsulated through the box cover 4, the third-stage rod body 15 is located in the second-stage rod body 14 is located in the first-stage rod body 13, the displacement sensor is provided with a stay wire, a, through the tertiary body ofrod 15 of pulling and drive the stay wire and produce the displacement, tertiary body ofrod 15 pulls out for the second grade body ofrod 14 simultaneously, then tertiary body ofrod 15 pulling second grade body ofrod 14 outwards pulls simultaneously for the one-level body ofrod 13, like this, has formed external displacement sensor, through tertiary extending structure, has reduced the flexible distance of each grade, is convenient for carry out the stroke measurement in the pit in the colliery.

Referring to fig. 2, the external pull wire displacement sensor is fixed externally by a mounting plate 1, when in use, the mounting plate 1 is fixed on a stationary member or a cylinder body to fix one end of the external pull wire displacement sensor, the universal lug bases 2 are fixed to the mounting plate 1 and integrally formed with the mounting plate 1, the two universal lug bases 2 are opposite and respectively provided with a shaft hole, a pin is used to pass through a through hole provided in the universal joint 3 and both ends of the pin are respectively connected to the shaft holes of the universal lug bases 2, so that the universal joint 3 can rotate relative to the mounting plate 1, both ends of the box cover 4 are respectively provided with protrusions with opposite positions which protrude outwards, and the protrusions are respectively provided with a shaft hole, both ends of the universal joint 3 are clamped into the shaft holes, so that the universal joint 3 can rotate in the other direction, in this embodiment, the universal joint 3 has a deflection, the deflection angle is less than or equal to 15 degrees, and the external stay wire displacement sensor is ensured to normally work for measurement and is not damaged; the box body 5 is internally provided with a space for accommodating the staywire displacement sensor 10, one side of the box body 5 is provided with an elliptical hole, a signal transmission line of the staywire displacement sensor 10 penetrates through the elliptical hole of the box body 5 to extend out of the box body 5 and is connected with a sensor connecting cable through a male-female joint of M12, the sensor connecting cable is connected with a controller, the controller can read a signal of the staywire displacement sensor 10 and can obtain and display the measuring stroke of the external stay wire displacement sensor at the moment through program calculation, a plurality of threaded holes are arranged at the edge of the opening of the box body 5, the box cover 4 is provided with through holes with opposite positions, the box cover 4 is sealed and fixed at the opening of the box body 5 by using screws, thus, the staywire displacement sensor 10 is arranged in the box body 5, the other side of the box body 5 is also provided with a stay wire opening, a stay, and an external thread is arranged at one end of the third-level rod body 15, a stay wire of the staywire displacement sensor 10 is connected to the external thread, and the first-level rod body 13 is connected to the stay wire opening and is hermetically connected with the box body 5.

The first-stage rod body 13 and the second-stage rod body 14 are respectively in a sleeve shape, one end of the first-stage rod body 13 is welded to the box body 5, the outer side of the other end of the first-stage rod body 13 is provided with an external thread, the inner wall of the second-stage guide sleeve 6 is provided with an internal thread and is sleeved and connected at the external thread in a thread matching mode, the second-stage rod body 14 is arranged in the first-stage rod body 13 and extends out of the second-stage guide sleeve 6, the second-stage rod body 14 can extend out or retract relative to the first-stage rod body 13, the outer edge of one end of the second-stage rod body 14 is sleeved with a second-stage check ring 11, the outer diameter of the second-stage check ring 11 is between the outer diameter of the second-stage rod body 14 and the inner diameter of the first-stage rod body 13, the second-stage rod body 14 is always clamped in the second-, thus, the secondaryrod guide belt 16 is located at the outer side of thesecondary rod 14 to support and guide thesecondary rod 14, so that thesecondary rod 14 is more stable when pulled outwards, an external thread is sleeved at the other end of thesecondary rod 14, an internal thread is arranged at the inner side of thetertiary guide sleeve 7, thetertiary guide sleeve 7 is matched with the end of thesecondary rod 14 through the thread, thetertiary rod 15 is arranged in thesecondary rod 14 and extends out of thetertiary guide sleeve 7, thetertiary rod 15 can extend out or retract relative to thesecondary rod 14, atertiary check ring 12 is sleeved at the outer edge of one end of thetertiary rod 15, the outer diameter of thetertiary check ring 12 is between the outer diameter of thetertiary rod 15 and the inner diameter of thesecondary rod 14, so that thetertiary check ring 12 always clamps thetertiary rod 15 in thetertiary guide sleeve 7 to ensure that thetertiary rod 15 is not pulled out of thesecondary rod 14, the two tertiaryrod guide belts 17 are annular and are arranged in grooves concavely arranged at the inner side of the tertiary guide, thus, the tertiarybar guide belt 17 is located outside thetertiary bar body 15 to support and guide thetertiary bar body 15, so that thetertiary bar body 15 is more stable when pulled outwards; in the present embodiment, the portion at the housing: the mounting plate 1, the universal lug seat 2, the universal joint 3, the box cover 4, the box body 5, the first-level rod body 13, the second-level guide sleeve 6 and the third-level guide sleeve 7, the second-level rod body 14 and the third-level rod body 15 are all made of 304 stainless steel, the stainless steel has good strength and corrosion resistance and cannot rust underground, the wall thicknesses of the box body 5, the first-level rod body 13 and the second-level rod body 14 are all 4mm, so that thepulling displacement sensor 10 has strong smashing resistance and falling resistance and can protect the pulling displacement sensor, the second-levelrod guide belt 16 and the third-levelrod guide belt 17 are made of tetrafluorobronze materials, so that the pulling displacement sensor has good wear resistance and is beneficial to guiding action, the second-level rod body 14 can be conveniently pulled out of the first-level rod body 13 and the third-level rod body 15 can be conveniently pulled out of the second-level rod body 14, in the embodiment, the distance that the second-level rod body 14 is pulled out, to ensure smooth pulling of the second-stage rod body 14 and the third-stage rod body 15.

The stay wire of the staywire displacement sensor 10 of the embodiment is connected with one end of atertiary rod body 15, thetertiary rod body 15 pulls the stay wire of the staywire displacement sensor 10 to be pulled out relative to asecondary rod body 14, after thetertiary rod body 15 is pulled out of thesecondary rod body 14, thetertiary rod body 15 pulls thesecondary rod body 14 through a tertiaryanti-back ring 12, thesecondary rod body 14 is pulled out relative to aprimary rod body 13, and finally the stay wire is pulled to be measured; still be equipped with theeyescrew 9 of stoppingnut 8 and M5 in this embodiment,eyescrew 9 has the annular so that the pulling is handheld to be pulled, also can link to each other with the couple on the scalable piece, and along with the flexible removal of scalable piece, the opening part and the mutual matching attertiary uide bushing 7 are fixed to stoppingnut 8, the one end ofeyescrew 9 is fixed to the one end to tertiary body ofrod 15, during the use,handheld eyescrew 9 pulls out tertiary body ofrod 15, after the use, tertiary body ofrod 15 is withdrawed, stoppingnut 8 is fixed totertiary uide bushing 7, so that secondary body ofrod 14 withdraws to one-level body ofrod 13 in.

To sum up, the embodiment of the utility model installs the stay wire displacement sensor in the 304 stainless steel shell with 4mm wall thickness, namely the box body and the box cover, the stay wire displacement sensor can be pulled out relative to the second-level rod body through the third-level rod body, the second-level rod body can be pulled out relative to the first-level rod body, the second-level rod body and the third-level rod body play a supporting and guiding role through the second-level guide sleeve and the third-level guide sleeve, the stay wire of the stay wire displacement sensor is driven by the third-level rod body, the measuring stroke of the external stay wire displacement sensor is 943mm, the stay wire displacement sensor has a deflection range of about 15 degrees in the up-down and left-right directions through the universal joint device, so as to ensure that the sensor can not cause the sensor to be incapable of measuring the stroke or being damaged due to the deflection of the telescopic piece in the moving, can adapt to the severe environment under the coal mine, is suitable for severe underground environment.

This description describes examples of embodiments of the invention, and is not intended to illustrate and describe all possible forms of the invention. It will be appreciated by those of ordinary skill in the art that the embodiments described herein are intended to assist the reader in understanding the principles of the invention, and it is to be understood that the scope of the invention is not limited to such specific statements and embodiments. Those skilled in the art can make various other specific modifications and combinations based on the teachings of the present invention without departing from the spirit of the invention, and such modifications and combinations are still within the scope of the invention.

Claims (9)

1. The external stay wire displacement sensor is characterized by comprising a mounting plate (1), a universal ear seat (2), a universal joint (3), a box cover (4), a box body (5), a second-stage guide sleeve (6), a third-stage guide sleeve (7), a stay wire displacement sensor (10), a first-stage rod body (13), a second-stage rod body (14), a third-stage rod body (15), a second-stage rod guide belt (16) and a third-stage rod guide belt (17), wherein the box body (5) and the box cover (4) are integrally fixed to the universal joint (3) after being connected, the universal joint (3) is connected to the mounting plate through the universal ear seat (2), the stay wire displacement sensor (10) is installed in the box body (5) and is packaged through the box cover (4), one end of the first-stage rod body (13) is connected to the box body (5), the second-stage guide sleeve (6), the utility model discloses a displacement sensor, including the one-level body of rod (13), the one-level body of rod (13) is arranged in to the second grade body of rod (14) and extends second grade uide bushing (6), the pot head of the second grade body of rod (14) is equipped with tertiary uide bushing (7), the third grade body of rod (15) is arranged in the second grade body of rod (14) and extends third grade uide bushing (7), the one end of acting as go-between and the third grade body of rod (15) of acting as go-between displacement sensor (10) links to each other, the act as go-between of displacement sensor (10) is acted as go-between in to the pulling of the third grade body of rod (15) can outwards pull out for the second grade body of.

2. The external stay wire displacement sensor of claim 1, wherein the external stay wire displacement sensor further comprises a retaining nut (8) and an eyescrew (9) with a ring shape for facilitating pulling, the retaining nut (8) is fixed at an opening of the three-level guide sleeve (7) and matched with each other, one end of the eyescrew is fixed to one end of the three-level rod body (15), during use, the handheld eyescrew (9) pulls out the three-level rod body (15), after use, the three-level rod body (15) is withdrawn, the retaining nut (8) is fixed to the three-level guide sleeve (7) so that the two-level rod body (14) is withdrawn into the one-level rod body (13).

3. The external pull-wire displacement sensor according to claim 1, further comprising a second-stage anti-return ring (11), wherein the second-stage anti-return ring (11) is sleeved on one end of the second-stage rod body (14) and the outer diameter of the second-stage anti-return ring (11) is between the outer diameter of the second-stage rod body (14) and the inner diameter of the first-stage rod body (13), so as to clamp the second-stage rod body (14) in the second-stage guide sleeve (6) and ensure that the second-stage rod body (14) is not pulled out of the first-stage rod body (13).

4. The external pull-wire displacement sensor according to claim 3, further comprising a third-stage anti-return ring (12), wherein the third-stage anti-return ring (12) is sleeved at one end of the third-stage rod body (15) and the outer diameter of the third-stage anti-return ring (12) is between the outer diameter of the third-stage rod body (15) and the inner diameter of the second-stage rod body (14) so as to clamp the third-stage rod body (15) in the third-stage guide sleeve (7) and ensure that the third-stage rod body (15) is not pulled out of the second-stage rod body (14), and after the third-stage rod body (15) is pulled out of the second-stage rod body (14), the third-stage rod body (15) pulls the second-stage rod body (14).

5. The external stay wire displacement sensor according to claim 1, further comprising a secondary rod guide belt (16) and a tertiary rod guide belt (17), wherein two secondary rod guide belts (16) are arranged at intervals inside the secondary guide sleeve (6), the secondary rod guide belt (16) is arranged at the outer side of the secondary rod body (14) to support and guide the secondary rod body (14), two tertiary rod guide belts (17) are arranged at intervals inside the tertiary guide sleeve (7), and the tertiary rod guide belt (17) is arranged at the outer side of the tertiary rod body (15) to support and guide the tertiary rod body (15).

6. The external stay wire displacement sensor according to claim 5, wherein the secondary rod guide belt (16) and the tertiary rod guide belt (17) are made of tetrafluorobronze, so as to have wear resistance and facilitate the guiding function.

7. The external stay wire displacement sensor according to claim 1, wherein the distance of the second-stage rod body (14) from the first-stage rod body (13) plus the distance of the third-stage rod body (15) from the second-stage rod body (14) is greater than 800mm, and the deflection angle of the box body (5) and the box cover (4) relative to the mounting plate is less than or equal to 15 degrees in the horizontal direction and the vertical direction through the universal joint (3).

8. The external stay wire displacement sensor according to claim 1, wherein the surface roughness of the secondary (14) and tertiary (15) rods is less than or equal to Ra1.6 to ensure smooth pulling of the secondary (14) and tertiary (15) rods.

9. The external stay wire displacement sensor according to claim 1, wherein the wall thickness of the box body (5), the first-stage rod body (13) and the second-stage rod body (14) is more than or equal to 3mm, so as to have strong smashing resistance and falling resistance and protect the stay wire displacement sensor (10).

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