Project supervision detects drawing out soil equipment by Subgrade CompactionTechnical field
The utility model relates to a kind of project supervision checkout gear, relates in particular to a kind of project supervision and detects drawing out soil equipment by Subgrade Compaction.
Background technology
The quality of highway road surface has very important impact to the intensity of whole road structure, rigidity, planeness etc., so highway subgrade compaction quality is one of inherent index important in highway engineering construction quality managemant.It is sand replacement method that Subgrade Compaction detects existing universal method, and sand replacement method is to utilize the measurement sand of single-size to remove the base soil in displacement examination hole, then according to the weight of the base soil of measuring the volume of sand and being displaced, converses the degree of compaction numerical value of roadbed.Carrying out roadbed while fetching earth excavation examination hole, in prior art, mostly be and adopt artificial manual borehole to complete, so not only borehole labour intensity is large, and become hole shape to be also difficult to guarantee that rule is consistent, thereby can affect the accuracy of survey data, and its inefficiency, easily incur loss through delay man-hour.Chinese utility model patent CN203129119U discloses a kind of road base layer degree of compaction and has detected sampler, it comprises gripper shoe, supporting leg, screw rod, nut and sampling tube, is characterized in that described gripper shoe top center arranges nut, described screw rod is connected with sampling tube with gripper shoe through nut, the top of screw rod is provided with rotating handle, and gripper shoe below arranges supporting leg, and supporting leg below is provided with circular steadying plate.Compare with manually digging hole, the examination hole perisporium that this device digs is smooth, samples effective.But during due to wide open the digging of examination, roadbed was undertaken repeatedly rolling by road roller, subgrade strength is higher, said apparatus rotates rotating handle so that sampling tube enters in roadbed for artificial when excavation examination hole, so not only cause labour intensity very large, and easily because sampling tube is difficult to enter intensity compared with causing gripper shoe and supporting leg to shake in high roadbed.
Utility model content
For solving the deficiencies in the prior art, the utility model provides a kind of project supervision to detect drawing out soil equipment by Subgrade Compaction, and it can avoid adopting manual borehole the brought various drawbacks that fetch earth, and can when subgrade strength is higher, fetch earth smoothly, labour intensity is little, is suitable for using.
For achieving the above object, project supervision of the present utility model detects drawing out soil equipment by Subgrade Compaction, comprise the gripper shoe that has through hole with supporting leg and middle part, in described gripper shoe, corresponding to opened hole, be provided with hydraulic drive mechanism, the drive end of described hydraulic drive mechanism is connected with to slide and is arranged in the thief rod in described through hole, bottom at thief rod is connected with sampling tube, between the drive end of described hydraulic drive mechanism and gripper shoe, be also provided with when hydraulic drive mechanism orders about sampling tube and moves down compressed, to drive the elastic recoil mechanism moving on sampling tube after fetching earth at sampling tube.Adopt above-mentioned technical scheme, when need detection is fetched earth, using hydraulic drive mechanism to drive sampling tube to move down inserts in roadbed, after sampling tube inserts, open hydraulic drive mechanism, sampling tube is retracted position under the effect of elastic recoil mechanism, can complete thus the work of fetching earth that detects.Use sampling tube to insert to fetch earth in roadbed the thief hole perisporium after can making to fetch earth neat smooth, the process that fetches earth is quick, the drawback of having avoided manually digging hole to fetch earth; Owing to adopting hydraulic-driven to compare manpower, order about sampling tube and insert in roadbed and can greatly reduce labour intensity, can overcome the trouble that subgrade strength higher band is come, and under the effect of sampling tube Ke elastic recoil mechanism, self-return has further reduced labour intensity after fetching earth, be suitable for using.
As the restriction to aforesaid way, described hydraulic drive mechanism comprises and is fixed in described gripper shoe and is distributed in through hole many root posts around, is connected in the base plate with centre bore on column top, and is inverted and is connected in the hydraulic cylinder on described base plate; Through hole in described centre bore and gripper shoe coaxially arranges, and the hydraulic stem of described hydraulic cylinder slides and is arranged in centre bore, and described thief rod is connected in the bottom of hydraulic stem.
As the restriction to aforesaid way, described elastic recoil mechanism comprises the back-up ring that is connected in described hydraulic stem bottom, and is arranged between described back-up ring and gripper shoe and is sheathed on the spring on thief rod.Back-up ring is for when sampling tube moves down, spring being exerted pressure, and the elastic-restoring force of bearing spring moves to drive on sampling tube after sampling.
As the restriction to aforesaid way, between described spring and gripper shoe, be also provided with and can above push away described spring to drive the make progress screw thread lifting mechanism of return of described hydraulic stem.Screw thread lifting mechanism is set and can at the elastic-restoring force of spring, is not enough to drive while moving on sampling tube, spring is applied to the extra thrust making progress, so that sampling tube is retracted position on smoothly.
As the restriction to aforesaid way, described screw thread lifting mechanism comprise be fixed on described through hole edge with externally threaded central tube, and be threadedly connected to the drive nut on described central tube; Described thief rod slides and is arranged in central tube, and described spring slip cap is located at the outside of central tube.
As the restriction to aforesaid way, described sampling tube is the bottom that is movably connected on thief rod.Sampling tube is movably connected on the bottom of thief rod, sampling tube can be taken off like this to facilitate the sample soil by sampling tube to take out after sampling tube fetches earth complete return.
As the restriction to aforesaid way, described sampling tube comprises the top board with connecting rod that is connected in thief rod bottom, and is threadedly connected to the cylindrical shell on described top board; On the top of cylindrical shell, be also provided with multipair for pulling the drive plate of described cylindrical shell.Sampling tube is set to the form of top board screw thread cylindrical shell, after fetching earth, need only cylindrical shell is unloaded from top board, now, because cylindrical shell two ends are the taking-up that opening can facilitate sample soil in cylindrical shell greatly, at cylinder top, drive plate is set and has facilitated cylindrical shell to unload on top board.
As the restriction to aforesaid way, the bottom of described supporting leg is provided with pedal.In supporting leg bottom, pedal is set, when needing sampling tube to move down to insert in roadbed can with pin slam pedal so that drawing out soil equipment strong fix on bottom surface, simultaneously with respect to press the mode of gripper shoe with hand, the pedal that tramps with one's feet is convenient.
In sum, adopt the technical solution of the utility model, can realize and detect the operation of fetching earth, can avoid adopting manual borehole the brought various drawbacks that fetch earth, and can fetch earth smoothly when subgrade strength is higher, labour intensity is little, is suitable for using.
Accompanying drawing explanation
Below in conjunction with the drawings and the specific embodiments, the utility model is done further to describe in detail:
Fig. 1 is the structural representation of the utility model embodiment;
Fig. 2 is the structural representation of part body in Fig. 1;
Fig. 3 is the structural representation of sampling tube;
In figure: 1, gripper shoe; 2, hydraulic cylinder; 3, drive rod; 4, hydraulic stem; 5, thief rod; 6, sampling tube; 7, attaching nut; 8, back-up ring; 9, spring; 10, drive nut; 11, supporting leg; 12, pedal; 13, connecting rod; 14, top board; 15, drive plate; 16, column; 17, base plate; 18, central tube; 19, installing plate; 20, cylindrical shell.
The specific embodiment
The present embodiment relates to a kind of project supervision and detects drawing out soil equipment by Subgrade Compaction, by Fig. 1 in conjunction with shown in Fig. 2, it comprises the gripper shoe 1 being supported by supporting leg 11, in the bottom of supporting leg 11, be provided with pedal 12, the middle part of gripper shoe 1 is fixed with externally threaded central tube 18, the middle part of central tube 18 has the through hole that runs through gripper shoe 1, the surrounding's equal angles that is positioned at central tube 18 in gripper shoe 1 is fixed with three root posts 16, on the top of three root posts 16, be fixed with base plate 17, the middle part of base plate 17 has centre bore, and the through hole of opening on the centre bore on base plate 17 and central tube 18 arranges for coaxial.On base plate 17, be inverted and be fixed with hydraulic cylinder 2, hydraulic cylinder 2 is connected on base plate 17 by installing plate 19, and the hydraulic stem 4 of hydraulic cylinder 2 slides and is arranged on base plate 17 in centre bore.A side that is positioned at hydraulic cylinder 2 on base plate 17 is provided with and drives the drive rod 3 of hydraulic cylinder 2 and the switch of hydraulic cylinder 2.
The bottom of hydraulic stem 4 is connected with thief rod 5, and thief rod 5 slides and is arranged in the through hole on central tube 18, in the bottom of thief rod 5, is connected with sampling tube 6.In the bottom of hydraulic stem 4, be also fixed with a back-up ring 8, the below of back-up ring 8 is provided with spring 9, spring 9 is for being slidably located on central tube 18, and below spring 9, be positioned at the drive nut 10 that has also been threaded on central tube 18, the external diameter of drive nut 10 and back-up ring 8 is all a bit larger tham the aperture of spring 9, so that spring 9 can be stable between drive nut 10 and back-up ring 8.
The structure of sampling tube 6 as shown in Figure 3, it comprises that middle part is fixed with the top board 14 of connecting rod 13, the external diameter of connecting rod 13 is identical with the external diameter of thief rod 5, and be provided with screw thread in the upper end of connecting rod 13 and the lower end of thief rod 5, so that connecting rod 13 can be connected to by attaching nut 7 bottom of thief rod 5, also make thus sampling tube 6 for dismountable being connected on thief rod 5.On top board 14, be threaded connection cylindrical shell 20, top board 14 and cylindrical shell 20 have formed the structure of the bottom end opening of sampling tube 6, move down to insert in roadbed fetch earth for sampling tube 6.On the top of cylindrical shell 20, be also provided with multipair drive plate 15, drive plate 15 is for to be radially connected in the multipair of cylindrical shell 20 tops along top board 14, and every pair of drive plate 15 can be used for clamping device for cylindrical shell 20 is pulled down from top board 14 easily.
The use procedure of this detection drawing out soil equipment is such, first this device is placed on the roadbed ground that need detect, drive nut is threaded to the bottom of central tube 18 for 10 times, opening hydraulic cylinder 2 can work its hydraulic stem 4, pressing drive rod 3 makes hydraulic stem 4 start to move down, spring 9 is pressed down and is also started compression by back-up ring 8, drive sampling tube 6 by thief rod 5 also starts to move down, when sampling tube 6 is soon during kiss the earth, the tramp with one's feet pedal 12 of supporting leg 11 bottoms, to prevent being reversed jack-up after drawing out soil equipment kiss the earth or generation is rocked.Continue to press drive rod 3 and arrive prescribed depth until sampling tube 6 inserts in roadbed, then close hydraulic cylinder 2, make sampling tube 6 retract position on starting under the elastic-restoring force of spring 9, if the elastic-restoring force deficiency of spring 9 is so that sampling tube 6 is retracted position on starting, can turn drive nut 10 by spanner, make drive nut 10 move up to promote spring 9 along central tube 18 and move up, and retract position on finally starting by back-up ring 8 promotion sampling tubes 6.After treating to move on sampling tube 6, be rotationally connected nut 7 sampling tube 6 is taken off from thief rod 5, on container top, use instrument via drive plate 15, cylindrical shell 20 to be pulled down from top board 14, and then the sample soil in cylindrical shell 20 is taken out.