Roof separation measuring instrument

Abstract

The invention discloses a roof separation measuring instrument 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 measuring mechanism comprises a fixed shell, a take-up box, a traction measuring piece and a positioning pipe, the take-up box and the traction measuring piece are both connected with the fixed shell, the positioning pipe is connected to the top end of the fixed shell, and an auxiliary wire pulling assembly is arranged between the positioning pipe and the fixed shell; one end of the traction steel wire rope is wound on the outer side of the take-up box, and the other end of the traction steel wire rope penetrates through the auxiliary wire pulling assembly and then is connected with the anchor head piece. A power steel wire rope is arranged between the traction measuring piece and the auxiliary wire pulling assembly, one end of the power steel wire rope is wound on the outer side of the traction measuring piece, and the other end of the power steel wire rope is connected with the auxiliary wire pulling assembly. When the anchor head piece is inserted into the drill hole, the anchor head piece is not subjected to the traction acting force of the traction measuring piece, and the installation speed of the anchor head piece and the roof separation instrument is effectively increased.

Description

Technical Field

[0001] The invention relates to the field of coal mine protection, and in particular to a roof separation measuring instrument. Background Art

[0002] The roof delamination meter, also known as the roof delamination indicator, is a special monitoring instrument used to monitor the movement of roof rock strata. It can display the delamination conditions of the roof rock strata within the anchor rod length range and outside the same range of the anchor rod respectively. Through comprehensive roof delamination observation, it plays a certain guiding and warning role in the support and reform of the anchor network tunnel.

[0003] Before installing the roof delamination meter, holes are drilled on the roof of the coal mine to facilitate the insertion and fixation of the anchors, and then the anchors are connected to the displacement sensor outside the hole through a measuring rope; if the roof of the coal mine sinks, causing the measuring rope and displacement sensor to move, the displacement sensor can obtain the movement of the measuring rope in real time, thereby achieving the effect of measuring the roof sinking.

[0004] Patent No. ZL202010067563.8 discloses a roof delamination meter alarm device and a coal mine roof monitoring system, which can alarm when the roof sinks to a certain extent, effectively improving the safety of coal mine construction; however, when installing the roof delamination meter, the measuring rope is usually directly connected to the anchor and the displacement sensor, and then the anchor is inserted into the hole and fixed; in order to ensure its measurement accuracy, it is necessary to install a pulling structure on the displacement sensor to pull the measuring rope to ensure that the measuring rope is straightened during use; therefore, when inserting the anchor into the hole, the entire insertion process needs to overcome the straightening force of the pulling structure on the measuring rope, and the straightening force will affect the normal insertion operation of the anchor, thereby affecting the installation rate of the anchor and the roof delamination meter, and it is necessary to improve it. Summary of the invention

[0005] The object of the present invention is to provide a roof separation measuring instrument which has a simple structure and is easy to install in order to solve the above problems.

[0006] In order to achieve the above object, the technical solution of the present invention is: A roof separation measuring instrument comprises an anchor head, a pulling wire rope, and a measuring mechanism, wherein the anchor head is connected to the measuring mechanism via the pulling wire rope; the measuring mechanism comprises a fixed shell, a wire take-up box, a pulling measuring piece, and a positioning tube, wherein the wire take-up box and the pulling measuring piece are both connected to the fixed shell, the positioning tube is connected to the top of the fixed shell, and an auxiliary wire pulling assembly is arranged between the positioning tube and the fixed shell; one end of the pulling wire rope is wound around the outside of the wire take-up box, and the other end of the pulling wire rope passes through the auxiliary wire pulling assembly and is connected to the anchor head; a power wire rope is arranged between the pulling measuring piece and the auxiliary wire pulling assembly, wherein one end of the power wire rope is wound around the outside of the pulling measuring piece, and the other end of the power wire rope is connected to the auxiliary wire pulling assembly.

[0007] Furthermore, the auxiliary wire pulling assembly includes a card pin and a limit block. The card pin is fixedly connected to the top of the fixed shell, and the bottom end of the positioning tube is fixedly sleeved on the outside of the card pin. The card pin is provided with a guide slot that longitudinally penetrates the card pin, and the bottom end of the guide slot is connected to the inside of the fixed shell, and an avoidance through hole connected to the guide slot is provided on the side wall of the card pin; the limit block is arranged in the guide slot and the limit block can slide along the length direction of the guide slot; the limit block is provided with a first threading hole and a second threading hole that longitudinally penetrates the limit block, and the pull wire One end of the pulling wire rope away from the wire taking-up box passes through the first threading hole and the positioning tube in sequence and is connected to the anchor head piece, and one end of the power wire rope away from the pulling measuring piece passes through the second threading hole and is connected to the positioning piece; a bolt through hole is provided on the side wall of the limit block and a fastening screw is threadedly connected through the bolt through hole, the bolt through hole is provided corresponding to the avoidance through hole, the bolt through hole is communicated with the first threading hole and the second threading hole, so that the pulling wire rope in the first threading hole and the power wire rope in the second threading hole can be pressed against the limit position by the fastening screw.

[0008] Furthermore, a locking through hole is provided on the side wall of the locking needle, the locking through hole is connected to the guide through slot, a locking piece is inserted in the locking through hole, and the locking piece limits the position of the limit block after extending into the guide through slot; when the locking piece limits the position of the limit block, the bolt through hole on the limit block corresponds to the avoidance through hole on the side wall of the locking needle.

[0009] Furthermore, there are two positioning through holes, and the two positioning through holes are respectively arranged on the upper and lower sides of the avoidance through hole; after the positioning member extends into the two positioning through holes, the upper and lower ends of the limit block are limited.

[0010] Furthermore, a mounting notch is provided on the side wall of the bottom end of the positioning tube, the mounting notch corresponds to the positions of the avoidance through hole and the positioning through hole, and a protective cover is snap-connected to the inner wall of the mounting notch.

[0011] Furthermore, the pulling measuring piece is connected in the fixed shell, one end of the power wire rope is wound around the outside of the pulling measuring piece, and the other end of the power wire rope is passed through the guide groove from the inside of the fixed shell, and is connected to the positioning piece after passing through the second threading hole.

[0012] Furthermore, the wire taking-up box is connected to the side wall of the fixed shell, and the bottom ends of the positioning tube and the clamping needle are provided with corresponding threading grooves; one end of the pulling wire rope is wrapped around the outside of the wire taking-up box, and the other end of the pulling wire rope passes through the threading grooves of the bottom ends of the positioning tube and the bottom ends of the clamping needle in turn, and then enters the guide groove, and is connected to the anchor head after passing through the first threading hole and the positioning tube.

[0013] Furthermore, the guide slots, avoidance holes corresponding to the guide slots, and positioning holes corresponding to the guide slots on the anchor head piece, the limit block, and the clamping pin are each provided with two groups to perform pulling and installation operations on the two-way anchor head pieces.

[0014] Compared with the prior art, the present invention has the following advantages and positive effects: When the present invention is used, firstly, the limit block is limited in the guide groove of the clamping needle through the clamping piece, then the fastening screw is loosened, the pulling wire rope wound on the wire collection box is passed through the first threading hole and the positioning tube and then connected to the anchor head piece, and the power wire rope wound on the pulling and measuring piece is passed through the second threading hole and then connected to the positioning piece; then, the anchor head piece is inserted into the drilled hole of the top plate, at this time, the anchor head piece will drive the pulling wire rope into the drilled hole, and the pulling and measuring piece will not generate any pulling force on the anchor head piece; finally, after the anchor head piece is installed, the positioning tube is inserted into the drilled hole port, and the positioning tube is inserted into the drilled hole port through the installation notch at the bottom of the positioning tube and the clamping needle. The avoidance through hole on the upper is tightened to tighten the fastening screw, and the positioning piece is taken out of the positioning through hole, and the position of the limit block is no longer limited; at this time, the fastening bolt presses the pulling wire rope in the first threading hole and the power wire rope in the second threading hole tightly, and the pulling measuring piece pulls the limiting block to move in the guide groove through the power wire rope under its own pulling force, and the pulling wire rope between the limiting block and the anchor head piece is tightened when the limiting block moves, and finally a complete measuring rope structure is formed between the pulling measuring piece, the power wire rope, the limiting block, the pulling wire rope and the anchor head piece to measure the settlement of the top plate, and the measurement result is displayed on the pulling measuring piece; The present invention adopts the design of the auxiliary pulling wire assembly, so that the anchor head component will not be subjected to the pulling force of the pulling measuring component during the insertion of the anchor head component into the drilling hole, which will not affect the smooth insertion of the anchor head component into the drilling hole; and after the installation of the anchor head component is completed, the pulling measurement effect of the pulling measuring component on the anchor head component can be realized again; it has a simple structure and is easy to operate, which effectively improves the installation rate of the anchor head component and the roof delamination meter, and further improves the use effect of the roof delamination meter. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0016] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is an assembly structure diagram of the present invention; Figure 3 This is the assembly structure diagram of the auxiliary wire drawing assembly; Figure 4 for Figure 3 A magnified view of the local structure; Figure 5 This is a cross-sectional structural diagram of the auxiliary wire assembly during the installation of the anchor head; Figure 6 This is a cross-sectional structural diagram of the auxiliary tension wire assembly after the anchor head is installed. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work, any modifications, equivalent substitutions, improvements, etc., should be included in the protection scope of the present invention.

[0018] like Figures 1 to 6 As shown, this embodiment discloses a roof separation measuring instrument, including an anchor head 7, a pulling wire rope 10, and a measuring mechanism, wherein the anchor head 7 is connected to the measuring mechanism via the pulling wire rope 10; The measuring mechanism includes a fixed housing 6, a take-up box 8, a pulling measuring piece 9, and a positioning tube 5. The take-up box 8 is fixedly connected to the side wall of the fixed housing 6. The take-up box 8 is used to wind and store the pulling wire rope. It does not have any elastic structure and does not generate pulling force. The pulling measuring piece 9 is fixedly connected to the fixed housing 1. It has an elastic structure and a position sensor, which can pull the power wire rope and realize the position monitoring of the position sensor through the length of the power wire rope. The positioning tube 5 is connected to the top of the fixed shell 6, and an auxiliary wire pulling assembly is arranged between the positioning tube 5 and the fixed shell 6; the bottom end of the pulling wire rope 10 is wound around the outside of the wire taking-up box 8, and the top end of the pulling wire rope 10 passes through the auxiliary wire pulling assembly and is connected to the anchor head 7; a power wire rope 11 is arranged between the pulling measuring piece 9 and the auxiliary wire pulling assembly, and the bottom end of the power wire rope 11 is wound around the outside of the pulling measuring piece 9, and the top end of the power wire rope 11 is connected to the auxiliary wire pulling assembly.

[0019] The auxiliary wire pulling assembly includes a card pin 1 and a limit block 2. The card pin 1 is fixedly connected to the top of the fixed shell 6. The bottom end of the positioning tube 5 is fixedly sleeved on the outside of the card pin 1 and fixedly connected to the top of the fixed shell 6. The card pin 1 is provided with a guide slot 101 that penetrates the card pin 1 longitudinally, and the bottom end of the guide slot 101 is connected to the inside of the fixed shell 6. The side wall of the card pin 1 is provided with an avoidance through hole 102 that is connected to the guide slot 101. The limit block 2 is arranged in the guide groove 101 and the limit block 2 can slide along the length direction of the guide groove 101; the limit block 2 is provided with a first threading hole 201 and a second threading hole 202 which penetrate the limit block 2 longitudinally, and the bottom ends of the positioning tube 5 and the clamping needle 1 are provided with corresponding threading grooves 104; the top end of the pulling wire rope 10 passes through the threading grooves 104 at the bottom ends of the positioning tube 5 and the bottom ends of the clamping needle 1 in turn, and then enters the guide groove 101, and is connected to the anchor head 7 after passing through the first threading hole 201 and the positioning tube 5; the top end of the power wire rope 11 passes through the guide groove 101 from the inside of the fixed shell 5, and is connected to the positioning member 12 after passing through the second threading hole 202, and the positioning member 12 is used to prevent the power wire rope 11 from coming out of the second threading hole 202; A bolt through hole 203 is provided on the side wall of the limit block 2, and a fastening screw 4 is threadedly connected through the bolt through hole 203. The bolt through hole 203 is arranged corresponding to the avoidance through hole 102. The bolt through hole 203 is connected with the first threading hole 201 and the second threading hole 202, and the first threading hole 201 and the second threading hole 202 are symmetrically arranged on both sides of the axis of the bolt through hole 203. When the fastening screw 4 is tightened, the end wall of the fastening screw 4 presses the pulling wire rope 10 in the first threading hole 201 and the power wire rope 11 in the second threading hole 202 against the side wall of the threading hole, thereby realizing fixed limitation of the pulling wire rope 10 and the power wire rope 11.

[0020] The side wall of the card needle 1 is provided with a locking through hole 103, and there are two locking through holes 103, and the two locking through holes 103 are respectively arranged on the upper and lower sides of the avoidance through hole 102, and the two locking through holes 103 are both connected with the guide through groove 101. A locking piece 3 is inserted in the locking through hole 103, and the locking piece 3 is in a horizontal U-shape. The two ends of the locking piece 3 extend into the guide through groove 101 through the locking through hole 103 to limit the position of the upper and lower ends of the limit block 2; when the locking piece 3 limits the position of the limit block 2, the bolt through hole 203 on the limit block 2 corresponds to the avoidance through hole 102 on the side wall of the card needle 1; in order to avoid the blocking of the avoidance through hole 102 by the locking piece 3, it is necessary to provide a corresponding avoidance center hole 301 or other curved avoidance structure on the locking piece 3 to avoid the position of the avoidance through hole 102, so as to facilitate the use of a wrench to tighten the fastening screw 4 in the bolt through hole 203.

[0021] An installation notch 501 is provided on the side wall at the bottom end of the positioning tube 5, and the installation notch 501 corresponds to the positions of the avoidance through hole 102 and the positioning through hole 103. A protective cover 502 is snap-connected to the inner wall of the installation notch 501. The design of the installation notch facilitates operation on the connection status of the auxiliary pull wire assembly, and after the operation is completed, the protective cover is put on to protect its internal structure.

[0022] The guide slot 101 on the anchor head 7, the limit block 2 and the clamping pin 1, the avoidance hole 102 corresponding to the guide slot 101, and the clamping hole 103 corresponding to the guide slot 101 are each provided in two groups to perform pulling and installation operations on the two-way anchor head.

[0023] This design can realize the installation operation of two-way anchor heads. The two-way anchor heads can be installed and positioned at different depths in the borehole, which is convenient for people to measure and analyze the settlement conditions of the roof at different heights, further improving the use effect of the roof delamination meter.

[0024] When the present invention is used, firstly, the limit block is limited in the guide groove of the card needle through the clamping piece, then the fastening screw is loosened, the pulling wire rope wound on the wire box is passed through the first threading hole and the positioning tube and then connected to the anchor head piece, and the power wire rope wound on the pulling and measuring piece is passed through the second threading hole and then connected to the positioning piece; then, the anchor head piece is inserted into the drilled hole of the top plate, at this time, the anchor head piece will drive the pulling wire rope into the drilled hole, and the pulling and measuring piece will not generate any pulling force on the anchor head piece. Figure 5As shown; finally, after the anchor head is installed, the positioning tube is inserted into the drilling port, the fastening screw is tightened through the installation notch at the bottom of the positioning tube and the avoidance through hole on the clamping pin, and the clamping piece is taken out of the clamping through hole, and the position of the limit block is no longer limited; at this time, the fastening bolt presses the pulling wire rope in the first threading hole and the power wire rope in the second threading hole tightly, and the pulling measuring piece pulls the limit block to move in the guide groove through the power wire rope under its own pulling force, and the pulling wire rope between the limit block and the anchor head is tightened when the limit block moves, as shown in FIG. Figure 6 As shown; finally, a complete measuring rope structure is formed between the pulling measuring piece, the power steel wire rope, the limit block, the pulling steel wire rope and the anchor head piece to measure the settlement of the top plate, and the measurement result is displayed on the pulling measuring piece; The present invention adopts the design of the auxiliary pulling wire assembly, so that the anchor head component will not be subjected to the pulling force of the pulling measuring component during the insertion of the anchor head component into the drilling hole, which will not affect the smooth insertion of the anchor head component into the drilling hole; and after the installation of the anchor head component is completed, the pulling measurement effect of the pulling measuring component on the anchor head component can be realized again; it has a simple structure and is easy to operate, which effectively improves the installation rate of the anchor head component and the roof delamination meter, and further improves the use effect of the roof delamination meter.

Claims

1. A roof separation measuring instrument, comprising an anchor head, a pulling wire rope, and a measuring mechanism, wherein the anchor head is connected to the measuring mechanism through the pulling wire rope; characterized in that: The measuring mechanism includes a fixed shell, a wire taking-up box, a pulling measuring piece, and a positioning tube. The wire taking-up box and the pulling measuring piece are both connected to the fixed shell. The positioning tube is connected to the top of the fixed shell. An auxiliary wire pulling assembly is arranged between the positioning tube and the fixed shell. One end of the pulling wire rope is wound around the outside of the wire taking-up box, and the other end of the pulling wire rope passes through the auxiliary wire pulling assembly and is connected to the anchor head piece. A power wire rope is arranged between the pulling measuring piece and the auxiliary wire pulling assembly. One end of the power wire rope is wound around the outside of the pulling measuring piece, and the other end of the power wire rope is connected to the auxiliary wire pulling assembly.

2. The roof separation measuring instrument according to claim 1, characterized in that: The auxiliary wire pulling assembly includes a clamping pin and a limit block. The clamping pin is fixedly connected to the top of the fixed shell, and the bottom end of the positioning tube is fixedly sleeved on the outside of the clamping pin. The clamping pin is provided with a guide slot that penetrates the clamping pin longitudinally, and the bottom end of the guide slot is connected to the inside of the fixed shell. An avoidance hole connected to the guide slot is provided on the side wall of the clamping pin; the limit block is arranged in the guide slot and the limit block can slide along the length direction of the guide slot; the limit block is provided with a first threading hole and a second threading hole that penetrates the limit block longitudinally, and the wire is pulled. The end of the rope away from the wire taking-up box passes through the first threading hole and the positioning tube in sequence and is connected to the anchor head piece, and the end of the power wire rope away from the pulling measuring piece passes through the second threading hole and is connected to the positioning piece; a bolt through hole is provided on the side wall of the limit block and a fastening screw is threadedly connected through the bolt through hole, the bolt through hole is provided corresponding to the avoidance through hole, and the bolt through hole is connected to the first threading hole and the second threading hole, so that the pulling wire rope in the first threading hole and the power wire rope in the second threading hole can be pressed against the limit position through the fastening screw.

3. The roof separation measuring instrument according to claim 2, characterized in that: A locking through hole is provided on the side wall of the locking needle, which is connected to the guide through slot. A locking piece is inserted into the locking through hole. After the locking piece is inserted into the guide through slot, the position of the limit block is limited. When the locking piece limits the position of the limit block, the bolt through hole on the limit block corresponds to the avoidance through hole on the side wall of the locking needle.

4. The roof separation measuring instrument according to claim 3, characterized in that: There are two positioning through holes, and the two positioning through holes are respectively arranged at the upper and lower sides of the avoidance through hole; after the positioning member extends into the two positioning through holes, the upper and lower ends of the limit block are limited.

5. The roof separation measuring instrument according to claim 4, characterized in that: The side wall at the bottom end of the positioning tube is provided with an installation notch, the installation notch corresponds to the positions of the avoidance through hole and the positioning through hole, and the inner wall of the installation notch is buckled and connected with a protective cover.

6. The roof separation measuring instrument according to claim 5, characterized in that: The pulling measuring piece is connected in the fixed shell, one end of the power wire rope is wound around the outside of the pulling measuring piece, and the other end of the power wire rope passes through the guide groove from the inside of the fixed shell and is connected to the positioning piece after passing through the second threading hole.

7. The roof separation measuring instrument according to claim 6, characterized in that: The wire taking-up box is connected to the side wall of the fixed shell, and the bottom ends of the positioning tube and the clamping needle are provided with corresponding wire threading grooves; one end of the pulling wire rope is wound around the outside of the wire taking-up box, and the other end of the pulling wire rope passes through the wire threading grooves at the bottom ends of the positioning tube and the clamping needle in turn, and then enters the guide groove, and is connected to the anchor head after passing through the first wire threading hole and the positioning tube.

8. The roof separation measuring instrument according to claim 7, characterized in that: The guide slots, avoidance holes corresponding to the guide slots, and positioning holes corresponding to the guide slots on the anchor head piece, the limit block, and the clamping pin are all provided in two groups to perform pulling and installation operations on the two-way anchor head pieces.

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