Roof separation instrument structure

Abstract

The utility model discloses a roof separation instrument structure which comprises an anchor head piece, a traction steel wire rope and a measuring mechanism, and the anchor head piece is connected with the measuring mechanism through the traction steel wire rope. The anchor head piece comprises a mounting pipe, a pointed-end piece and a clamping fin assembly, the mounting pipe is longitudinally arranged, one end of the mounting pipe is connected with the pointed-end piece, and the other end of the mounting pipe is connected with the traction steel wire rope; two clamping fin assemblies are arranged on the mounting pipe in the axis direction of the mounting pipe. The clamping fin assembly comprises a first clamping fin and a second clamping fin; avoiding holes are formed in the side walls of the two sides of the mounting pipe, the first clamping fin and the second clamping fin are arranged corresponding to the two avoiding holes, and the top end of the first clamping fin and the top end of the second clamping fin extend into the corresponding avoiding holes and are connected with the mounting pipe through pin shafts; a torsional spring is arranged between the first clamping fin and the second clamping fin, the two ends of the torsional spring abut against the inner wall of the first clamping fin and the inner wall of the second clamping fin respectively, and the first clamping fin and the second clamping fin are unfolded outwards under the elastic effect.

Description

TECHNICAL FIELD

[0001] The utility model relates to the coal mine protection field especially relates to a roof separation layer appearance structure. BACKGROUND

[0002] The roof separation layer appearance is also called roof separation layer indicator, and it is a special monitoring instrument for monitoring the movement of roof strata.

[0003] Before installation, the roof separation layer appearance is first drilled on the coal mine roof to facilitate the insertion and fixation of the anchoring part, and then the anchoring part is connected with the displacement sensor outside the hole through the measuring rope.

[0004] Patent No. ZL202010067563.8 discloses a roof separation layer appearance alarm device and coal mine roof monitoring system, which can alarm when the roof subsides to a certain extent, effectively improving the safety of coal mine construction. However, the anchoring part structure is relatively complex, not easy to produce and assemble, which increases the production cost of the roof separation layer appearance and affects the production rate of the roof separation layer appearance. In addition, during use, it is found that water seepage in the inner wall of the coal mine will flow out through the inner wall of the drill hole and fall on the fixed shell of the displacement sensor, which is easy to enter the fixed shell through the gap of the fixed shell and contact the displacement sensor, affecting the measurement accuracy and service life of the displacement sensor. SUMMARY

[0005] The utility model aims at the above -mentioned problem, provides a roof separation layer appearance structure simple in structure, convenient to use.

[0006] In order to achieve the above object, the technical scheme of the utility model is:

[0007] The utility model provides a roof separation instrument structure, including anchor head spare, pull steel wire rope, measuring mechanism, anchor head spare is connected with measuring mechanism through pull steel wire rope, anchor head spare includes installation pipe, sharp head spare, card fin subassembly, the installation pipe is longitudinally arranged, one end of installation pipe is connected with sharp head spare, the other end of installation pipe is connected with pull steel wire rope, two card fin subassembly are arranged on the axis direction of installation pipe on the installation pipe, one card fin subassembly is arranged on the left and right two side walls of installation pipe, and the other card fin subassembly is arranged on the front and back side walls of installation pipe, to make two card fin subassembly form the relative vertical state on installation pipe, card fin subassembly includes first card fin, second card fin, both sides of the side wall of installation pipe are provided with the avoiding hole, and first card fin, second card fin are correspondingly arranged with two avoiding holes, and the top of first card fin, second card fin is inserted into the corresponding avoiding hole and is connected with the pin shaft of installation pipe, torsion spring is arranged between first card fin, second card fin, and the inner wall of first card fin, second card fin is abutted with the both ends of torsion spring and is expanded outward under the elastic action of torsion spring.

[0008] Further, the card fin subassembly further includes a first pin shaft, a second pin shaft, and a fixed pin shaft, the first pin shaft, the second pin shaft, and the fixed pin shaft are located in the installation pipe and connected with the side wall of the installation pipe, the axis directions of the first pin shaft, the second pin shaft, and the fixed pin shaft are parallel, and the axis directions of the first pin shaft, the second pin shaft, and the third pin shaft are perpendicular to the axis direction of the installation pipe; the first pin shaft and the second pin shaft are correspondingly arranged with the two avoiding holes and located inside the top of the corresponding avoiding hole, the top of the first card fin is inserted into the corresponding avoiding hole and connected with the first pin shaft, and the top of the second card fin is inserted into the corresponding avoiding hole and connected with the second pin shaft; the fixed pin shaft is located between the first pin shaft and the second pin shaft, the torsion spring is sleeved outside the fixed pin shaft, and the both ends of the torsion spring are abutted with the inner walls of the first card fin and the second card fin.

[0009] Further, the axis directions of the fixed pin shafts of the two card fin subassemblies are perpendicular.

[0010] Further, the top of the sharp head spare is conically arranged, the outer diameter of the top of the sharp head spare is larger than the outer diameter of the top of the installation pipe, a support pipe is integrally formed at the bottom of the sharp head spare, the support pipe is embedded inside the top of the installation pipe, the support pipe and the installation pipe are provided with corresponding bolt through holes, and the fixed bolt is connected through the bolt through holes.

[0011] Further, the bottom of the installation pipe is fixedly connected with a pulling shaft, and one end of the pulling steel wire rope is connected with the pulling shaft.

[0012] Further, the measuring mechanism comprises a fixed shell, a pulling measuring piece and a positioning pipe, the pulling measuring piece is fixedly connected in the fixed shell, the bottom end of the positioning pipe is connected with the top end of the fixed shell and the inside of the positioning pipe is communicated with the inside of the fixed shell; one end of the pulling steel wire rope is connected with the pulling shaft, the other end of the pulling steel wire rope is inserted into the inside of the fixed shell through the positioning pipe and is connected with the pulling measuring piece.

[0013] Further, the bottom end of the positioning pipe is provided with a sealing assembly; the sealing assembly comprises a rubber ring piece and a screw sleeve, the rubber ring piece is provided with a through hole in the center position, is sleeved outside the positioning pipe through the through hole, can slide along the axial direction of the positioning pipe and keeps a sealed state between the inner wall of the through hole and the outer side wall of the positioning pipe, the top end of the rubber ring piece is provided in an expanded shape and can realize an extrusion deformation action; the screw sleeve is arranged at the bottom end of the rubber ring piece and supports the bottom end of the rubber ring piece, is sleeved outside the positioning pipe and is connected with the positioning thread arranged on the outer side wall of the positioning pipe; the outer side of the screw sleeve is provided with a plurality of fastening bolts, the axial direction of the fastening bolts is consistent with the radial direction of the positioning pipe, the fastening bolts are screw-connected with the positioning through holes arranged on the side wall of the screw sleeve, one end of the fastening bolts is connected with the side wall of the positioning pipe through the positioning through holes to realize the installation and positioning operation of the screw sleeve and the rubber ring piece.

[0014] Further, the inner wall of the positioning pipe is symmetrically provided with two partition grooves, the length direction of the partition grooves is consistent with the length direction of the positioning pipe; two partition plates are inserted in the two partition grooves to divide the inside of the positioning pipe into two relatively independent accommodating cavities; the length direction of the partition plates is consistent with the length direction of the positioning pipe, the two sides of the width direction of the partition plates are respectively inserted in the two partition grooves and can slide along the length direction of the partition grooves.

[0015] Further, the anchor head piece, the pulling steel wire rope and the pulling measuring piece are all provided with two groups and are correspondingly arranged; one end of the two groups of pulling steel wire ropes is respectively connected with the two groups of corresponding anchor head pieces, the other end of the two groups of pulling steel wire ropes is respectively connected with the two groups of corresponding pulling measuring pieces through the two accommodating cavities in the positioning pipe.

[0016] Compared with the prior art, the utility model has the advantages and positive effects that:

[0017] The anchor head piece in the utility model is connected with two groups of clamping fin assemblies through the installation pipe, when the anchor head piece is inserted into the drill hole, the first clamping fin and the second clamping fin in the clamping fin assembly rotate and contract under the action of the inner wall of the drill hole and compress the torsion spring; after reaching the specified position, the bottom end of the first clamping fin and the second clamping fin outside the avoiding hole is in contact with the inner wall of the drill hole under the elastic action of the torsion spring; the installation pipe is connected and fixed with the inner wall of the drill hole in the circumferential direction through the abutting contact between the four clamping fins in the two groups of clamping fin assemblies; when the anchor head piece is assembled, only the torsion spring needs to be installed through the fixed pin shaft, and the first clamping fin and the second clamping fin are installed through the first pin shaft and the second pin shaft, the whole anchor head piece is simple in structure and fast in assembly, the production and assembly operation of the anchor head piece can be realized quickly, the production cost of the roof separation instrument is reduced, and the production rate of the roof separation instrument is effectively improved;

[0018] On the other hand, the utility model discloses a design that sets up a sealing assembly outside the positioning pipe, so that after the anchor head piece is installed, the positioning pipe is inserted into the inside of the drill hole port, the top end of the rubber ring piece in the sealing assembly is in contact with the roof and blocks the outside of the drill hole, then the screw sleeve piece is rotated, the screw sleeve piece moves upwards and extrudes the bottom end of the rubber ring piece under the action of the positioning thread, finally the top end of the rubber ring piece is extruded and deformed and forms a sealed contact state with the roof, which can avoid the situation that the water in the drill hole flows out and affects the measurement accuracy and service life of the pulling measurement piece, and further improves the use effect of the roof separation instrument. ACCURACY

[0019] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without paying the creative labor.

[0020] Figure 1 It is the structural schematic diagram of the utility model;

[0021] Figure 2 It is the assembly drawing of the utility model;

[0022] Figure 3 It is the structural schematic diagram of the anchor head piece;

[0023] Figure 4 It is the sectional view of the anchor head piece;

[0024] Figure 5 It is the assembly drawing of the sealing assembly;

[0025] Figure 6The assembly structure diagram of the positioning pipe and the partition plate. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the utility model will be apparently and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Any modification, equivalent replacement, improvement, etc. of all other embodiments obtained by the ordinary skilled in the art without creative labor should be included in the protection scope of the utility model.

[0027] As shown in the figure, Figures 1 to 6 The embodiment discloses a roof separation instrument structure, which comprises an anchor head piece 1, a pulling steel wire rope 6 and a measuring mechanism.

[0028] The anchor head piece 1 comprises a mounting pipe 11, a sharp head piece 12 and a clamping fin assembly, the mounting pipe 11 is longitudinally arranged, the top end of the mounting pipe 11 is connected with the sharp head piece 12, and the bottom end of the mounting pipe 11 is fixedly connected with a pulling shaft 13 and connected with one end of the pulling steel wire rope 6 through the pulling shaft 13; two clamping fin assemblies are arranged on the side wall of the mounting pipe 11 along the axial direction of the mounting pipe 11.

[0029] The clamping fin assembly comprises a first clamping fin 17, a second clamping fin 18, a first pin shaft 14, a second pin shaft 15 and a fixed pin shaft 16, the first pin shaft 14, the second pin shaft 15 and the fixed pin shaft 16 are all located in the mounting pipe 11 and connected with the side wall of the mounting pipe 11, the axial directions of the first pin shaft 14, the second pin shaft 15 and the third pin shaft 16 are parallel, and the axial directions of the first pin shaft 14, the second pin shaft 15 and the third pin shaft 16 are perpendicular to the axial direction of the mounting pipe 11; the two side walls of the mounting pipe 11 are both provided with avoiding holes 111, the first pin shaft 14 and the second pin shaft 15 are correspondingly arranged with the two avoiding holes 111 and arranged in the inner side of the top end of the corresponding avoiding hole 111, the first clamping fin 17 and the second clamping fin 18 are also correspondingly arranged with the two avoiding holes 111, the top end of the first clamping fin 17 is inserted into the corresponding avoiding hole 111 and connected with the first pin shaft 14, the top end of the second clamping fin 18 is inserted into the corresponding avoiding hole 111 and connected with the second pin shaft 15, and the bottom ends of the first clamping fin 17 and the second clamping fin 18 are both located at the bottom end outside the avoiding hole 111 and arranged in a sharp shape; the fixed pin shaft 16 is located between the first pin shaft 14 and the second pin shaft 15, a torsional spring 19 is sleeved outside the fixed pin shaft 16, and the two ends of the torsional spring 19 are respectively abutted with the inner walls of the first clamping fin 17 and the second clamping fin 18 and make the first clamping fin 17 and the second clamping fin 18 expand outward under the elastic action.

[0030] The first and second clamping wings of one of the two clamping wing assemblies are arranged on the left and right side walls of the mounting tube, and the first and second clamping wings of the other clamping wing assembly are arranged on the front and rear side walls of the mounting tube, and the axes of the fixing pins in the two clamping wing assemblies are perpendicular to each other, so that the four clamping wings in the two clamping wing assemblies are evenly arranged around the mounting tube.

[0031] The top end of the sharp member 12 is conical, and the outer diameter of the top end of the sharp member 12 is larger than the outer diameter of the top end of the mounting tube 11. The bottom end of the sharp member 12 is integrally formed with a support tube 122, which is embedded in the inner side of the top end of the mounting tube 11. The support tube 122 and the mounting tube 11 are provided with corresponding bolt through holes, and a fixing bolt 121 is connected through the bolt through holes.

[0032] The sharp member is installed after the clamping wing assembly is connected to the mounting tube. It can protect the top end of the mounting tube, facilitate the installation of the torsional spring in the mounting tube, and avoid foreign matter from entering the mounting tube to affect the contraction and expansion of the first and second clamping wings. It has the advantages of simple structure, quick installation, and convenient production and assembly operation of the anchor head.

[0033] The measuring mechanism comprises a fixed shell 2, a pulling measuring member 5 and a positioning tube 3. The pulling measuring member 5 is fixedly connected in the fixed shell 2, and the bottom end of the positioning tube 3 is connected with the top end of the fixed shell 2, and the inside of the positioning tube 3 is communicated with the inside of the fixed shell 2. One end of the pulling steel wire rope 6 is connected with a pulling shaft 13, and the other end of the pulling steel wire rope 6 is inserted into the inside of the fixed shell 2 after passing through the positioning tube 3 and is connected with the pulling measuring member 5.

[0034] The pulling measuring member itself has a spring winding structure and a position sensor. The spring winding structure can pull the pulling steel wire rope, and the length of the pulling steel wire rope can be used to realize position monitoring of the position sensor. After the anchor head is installed, the positioning tube is inserted into the inside of the drilling port, and then the pulling steel wire rope drives the pulling measuring member and the fixed shell to be kept on the top plate of the drilling port under the elastic action of the spring winding structure in the pulling measuring member. When the top plate is settled, the pulling measuring member and the fixed shell descend with the top plate, the pulling steel wire rope is lengthened, and the position sensor in the pulling measuring member monitors and judges the position according to the lengthened length.

[0035] The outer periphery of the bottom end of the positioning tube 3 is provided with a sealing assembly 4; the sealing assembly 4 comprises a rubber ring part 41 and a screw sleeve part 42, the rubber ring part 41 is provided with a through hole 411 in the center position and is sleeved outside the positioning tube 3 through the through hole 411, the rubber ring part 41 can slide along the axis direction of the positioning tube 3 and maintain a sealed state between the inner wall of the through hole 411 and the outer side wall of the positioning tube 3, the top end of the rubber ring part 41 is provided in an expanded state and can realize extrusion deformation action; the screw sleeve part 42 is arranged at the bottom end of the rubber ring part 41 and abuts and supports the bottom end of the rubber ring part 41, the screw sleeve part 42 is sleeved outside the positioning tube 3 and is connected with the positioning thread 31 arranged on the outer side wall of the positioning tube 3; the outer side of the circumference of the screw sleeve part 42 is provided with a plurality of fastening bolts 421, the axis direction of the fastening bolts 421 is consistent with the radial direction of the positioning tube 3, the fastening bolts 421 are connected with the positioning through holes arranged on the side wall of the screw sleeve part 42 in a threaded manner, one end of the fastening bolts 421 passes through the positioning through hole and abuts against the side wall of the positioning tube 3, so as to realize the installation and positioning operation of the screw sleeve part 42 and the rubber ring part 41.

[0036] When the positioning tube is inserted into the drill hole, the top end of the rubber ring part abuts against the roof, then the hole screw sleeve part rotates upward to extrude the rubber ring part, so that the expanded structure of the top end of the rubber ring part is deformed, so as to ensure the sealing effect between the rubber ring part and the roof, which effectively avoids the condition that water in the drill hole flows out and damages the position sensor; at the same time, the top end of the rubber ring part is similar to the structure of a suction cup, after being in contact with and deformed by the roof, the suction cup can generate suction force with the roof, so as to improve the connection stability between the positioning tube, the fixed shell and the roof structure; the force required for the deformation of the top end of the rubber ring part needs to be smaller than the elastic force of the coil spring structure in the pulling measuring part, so as to avoid the condition that the reverse force generated when the rubber ring part is extruded causes the fixed shell and the pulling measuring part to move downward.

[0037] Two partition grooves 32 are symmetrically arranged on the inner wall of the positioning tube 3, the length direction of the partition grooves 32 is consistent with the length direction of the positioning tube 3; two partition plates 33 are inserted into the two partition grooves 32, so as to divide the inside of the positioning tube 3 into two relatively independent accommodating cavities; the length direction of the partition plate 33 is consistent with the length direction of the positioning tube 3, the two sides of the width direction of the partition plate 33 are respectively inserted into the two partition grooves 32 and can slide along the length direction of the partition grooves 32, so as to realize the assembly operation between the partition plate 33 and the positioning tube 3.

[0038] The anchor head piece 1, the pulling steel wire rope 6 and the pulling measuring piece 5 are provided with two groups and are correspondingly provided; one end of the two groups of pulling steel wire ropes 6 is connected with the corresponding two groups of anchor head pieces 1 respectively, the other end of the two groups of pulling steel wire ropes 6 is connected with the corresponding two groups of pulling measuring pieces 5 after passing through two accommodating cavities in the positioning pipe 3 respectively, the winding of the two-way pulling steel wire rope in the positioning pipe is avoided, the pulling state is avoided to affect the monitoring accuracy of the roof separation instrument, and the use effect of the roof separation instrument is further improved.

[0039] The roof separation instrument can perform roof separation monitoring operation by using a single anchor head piece, or can realize installation operation of two-way anchor head pieces through the above design structure, the two-way anchor head pieces can be installed and positioned at different depths in the drill hole, the corresponding pulling steel wire ropes are respectively pulled out from the accommodating cavities in the pipe, and finally the respective roof subsidence monitoring results are displayed in the two groups of pulling measuring pieces; the roof separation instrument is convenient for people to measure and analyze the roof subsidence state of different heights, and the use effect of the roof separation instrument is further improved.

[0040] The anchor head piece is connected with the two groups of clamping fin assemblies through the installation pipe, when the anchor head piece is inserted into the drill hole, the first clamping fin and the second clamping fin in the clamping fin assembly rotate and shrink under the action of the inner wall of the drill hole and compress the torsion spring; after reaching the specified position, the bottom end of the first clamping fin and the second clamping fin outside the avoiding hole is in contact with the inner wall of the drill hole under the elastic action of the torsion spring; the installation pipe is connected and fixed with the inner wall of the drill hole in the four directions through the abutting contact between the four clamping fins in the two groups of clamping fin assemblies; when the anchor head piece is assembled, only the torsion spring needs to be installed by using the fixed pin shaft, and the first clamping fin and the second clamping fin are installed by using the first pin shaft and the second pin shaft, the whole anchor head piece structure is simple and quick to assemble, the production and assembly operation of the anchor head piece can be quickly realized, the production cost of the roof separation instrument is reduced, and the production rate of the roof separation instrument is effectively improved;

[0041] On the other hand, the sealing assembly is arranged outside the positioning pipe, after the installation of the anchor head piece is completed, the positioning pipe is inserted into the inside of the drill hole port, the top end of the rubber ring piece in the sealing assembly is in contact with the roof and shields the outside of the drill hole, then the screw sleeve is rotated, the screw sleeve moves upward and extrudes the bottom end of the rubber ring piece under the action of the positioning thread, finally the top end of the rubber ring piece is extruded and deformed and forms a sealed contact state with the roof; the design can avoid the water in the drill hole from flowing out to affect the measurement accuracy and service life of the pulling measuring piece, and further improve the use effect of the roof separation instrument.

Claims

1. A roof separation meter structure comprising an anchor head, a pull cable, a measuring mechanism, the anchor head being connected to the measuring mechanism by the pull cable; characterized in that: The anchor head comprises a mounting pipe, a pointed head, and a clamping fin assembly. The mounting pipe is longitudinally arranged, one end of the mounting pipe is connected with the pointed head, and the other end of the mounting pipe is connected with a pulling steel wire rope. Two clamping fin assemblies are arranged on the mounting pipe along the axial direction of the mounting pipe, one of the two clamping fin assemblies is arranged on the left and right side walls of the mounting pipe, and the other clamping fin assembly is arranged on the front and rear side walls of the mounting pipe, so that the two clamping fin assemblies are in a relative vertical state on the mounting pipe. The clamping fin assembly comprises a first clamping fin and a second clamping fin. The left and right side walls of the mounting pipe are each provided with an avoiding hole, the first clamping fin and the second clamping fin are arranged corresponding to the two avoiding holes, the top ends of the first clamping fin and the second clamping fin extend into the corresponding avoiding holes and are connected with the pin shaft of the mounting pipe. A torsion spring is arranged between the first clamping fin and the second clamping fin, the two ends of the torsion spring abut against the inner walls of the first clamping fin and the second clamping fin and expand the first clamping fin and the second clamping fin outward under the elastic action.

2. The roof delamination instrument structure of claim 1, wherein: The clamping fin assembly further comprises a first pin shaft, a second pin shaft, and a fixed pin shaft. The first pin shaft, the second pin shaft, and the fixed pin shaft are all located in the mounting pipe and connected with the side walls of the mounting pipe. The axial directions of the first pin shaft, the second pin shaft, and the fixed pin shaft are parallel, and the axial directions of the first pin shaft, the second pin shaft, and the third pin shaft are perpendicular to the axial direction of the mounting pipe. The first pin shaft and the second pin shaft are arranged corresponding to the two avoiding holes and inside the top ends of the corresponding avoiding holes. The top end of the first clamping fin is connected with the first pin shaft after extending into the corresponding avoiding hole, and the top end of the second clamping fin is connected with the second pin shaft after extending into the corresponding avoiding hole. The fixed pin shaft is located between the first pin shaft and the second pin shaft, and the torsion spring is sleeved outside the fixed pin shaft. The two ends of the torsion spring abut against the inner walls of the first clamping fin and the second clamping fin.

3. The roof delamination gauge structure of claim 2, wherein: The axial directions of the fixed pin shafts of the two clamping fin assemblies are perpendicular.

4. The cap layer separation instrument structure of claim 3, wherein: The top end of the pointed head is conically arranged, and the outer diameter of the top end of the pointed head is greater than the outer diameter of the top end of the mounting pipe. A support pipe is integrally formed at the bottom end of the pointed head and is embedded inside the top end of the mounting pipe. The support pipe and the mounting pipe are provided with corresponding bolt through holes, and a fixing bolt is connected through the bolt through holes.

5. The cap layer separation instrument structure of claim 4, wherein: A pulling shaft is fixedly connected to the bottom end of the mounting pipe and connected with one end of the pulling steel wire rope through the pulling shaft.

6. The cap layering instrument structure of claim 5, wherein: The measuring mechanism comprises a fixed shell, a pulling measuring element, and a positioning pipe. The pulling measuring element is fixedly connected in the fixed shell, and the bottom end of the positioning pipe is connected with the top end of the fixed shell, and the inside of the positioning pipe is in communication with the inside of the fixed shell. One end of the pulling steel wire rope is connected with the pulling shaft, and the other end of the pulling steel wire rope extends into the inside of the fixed shell through the positioning pipe and is connected with the pulling measuring element.

7. The cap layering instrument structure of claim 6, wherein: The outer periphery of the bottom end of the positioning pipe is provided with a sealing assembly; the sealing assembly comprises a rubber ring part and a screw sleeve part, the rubber ring part is provided with a through hole at the center position and is sleeved outside the positioning pipe through the through hole, the rubber ring part can slide along the axial direction of the positioning pipe and maintain a sealed state between the inner wall of the through hole and the outer side wall of the positioning pipe, the top end of the rubber ring part is expanded and can realize extrusion deformation action; the screw sleeve part is arranged at the bottom end of the rubber ring part and supports the bottom end of the rubber ring part, the screw sleeve part is sleeved outside the positioning pipe and connected with the positioning thread arranged on the outer side wall of the positioning pipe; the outer periphery of the screw sleeve part is provided with a plurality of fastening bolts, the axial direction of the fastening bolts is consistent with the radial direction of the positioning pipe, the fastening bolts are threadedly connected with the positioning holes arranged on the side wall of the screw sleeve part, one end of the fastening bolt passes through the positioning hole and abuts against the side wall of the positioning pipe to realize the installation and positioning operation of the screw sleeve part and the rubber ring part.

8. The cap layering instrument structure of claim 7, wherein: Two partition grooves are symmetrically arranged on the inner wall of the positioning pipe, and the length direction of the partition grooves is consistent with the length direction of the positioning pipe; a partition plate is inserted into the two partition grooves to divide the inner part of the positioning pipe into two relatively independent accommodating cavities; the length direction of the partition plate is consistent with the length direction of the positioning pipe, and the width direction sides of the partition plate are respectively inserted into the two partition grooves and can slide along the length direction of the partition grooves.

9. The cap layering instrument structure of claim 8, wherein: The anchor head part, the pulling steel wire rope and the pulling measuring part are all provided with two groups and are correspondingly arranged; one end of the two groups of pulling steel wire ropes is respectively connected with the two groups of corresponding anchor head parts, and the other end of the two groups of pulling steel wire ropes is respectively connected with the two groups of corresponding pulling measuring parts after passing through the two accommodating cavities in the positioning pipe.

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