A roof displacement monitoring elastic linkage mechanism and application thereof

Abstract

The application relates to an elastic linkage mechanism for roof displacement monitoring and application thereof, and belongs to the technical field of mine monitoring equipment. The elastic linkage mechanism comprises a clockwork box, a pre-tightening clockwork and a linkage steel wire. The clockwork box is cylindrical and comprises upper and lower layer structures. The upper layer structure is provided with an annular steel wire groove along the outer periphery. A fixing hole is formed in the bottom of the steel wire groove. The linkage steel wire is wound in the steel wire groove, and the inner side end is fixed by penetrating through the fixing hole. The lower layer structure of the clockwork box is a cavity for arranging the pre-tightening clockwork. A clockwork guide groove is formed in the shell wall of the lower layer structure. The outer end of the pre-tightening clockwork is fixed in the clockwork guide groove. The elastic linkage mechanism is simple and practical in structure, convenient to assemble, and does not need to be provided with a clockwork manual adjusting structure.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of mine monitoring equipment, in particular to a roof displacement monitoring elastic linkage mechanism and its application. BACKGROUND

[0002] Roof displacement refers to the change in position caused by the separation of different rock layers in the roof of the mining space. When the position change caused by the separation of rock layers is too large, it will cause the collapse of the roof, resulting in roof fall disasters. Roadway roof fall disasters are one of the major threats to mine industry safety production. Roof displacement sensors are used to monitor the displacement changes of different rock layers, to real-time monitor the state of the roof rock layer, to determine the stability of the roadway, and to avoid roof fall accidents. It has great significance for guiding mine safety production.

[0003] In the prior art, the elastic linkage mechanism of the roof displacement monitoring device generally adopts a simple mechanical type or a mechanical and electronic integrated type device, and the fixed device at different positions in the rock layer hole is used to display the value generated by the change of the rock layer to the device. By calculating the relative displacement value between the rock layers, the analysis conclusion is obtained, and the stability of the roof is determined.

[0004] Problems existing in the prior art:

[0005] 1. The elastic linkage mechanism of the monitoring device adopts variable force spring and steel wire reverse rotation. When used on site, the tension of the spring needs to be adjusted by a manual adjustment mechanism. The power source of the spring is a passive type of secondary transmission that provides elastic force by manually rotating the spring shaft and then fastening with screws. This results in unstable and limited elastic force, and the size of the elastic force cannot be adjusted flexibly.

[0006] 2. The principle of passive type of secondary transmission to provide elastic force results in complex product structure, too many parts, complicated assembly, and high failure rate during use. SUMMARY

[0007] To solve the problems in the prior art, the present application designs a roof displacement monitoring elastic linkage mechanism to solve the problems of complex structure, complicated assembly and inconvenient use of the existing roof displacement monitoring device elastic linkage mechanism.

[0008] The technical scheme adopted by the present application is: the elastic linkage mechanism comprises a clockwork box, a pre-tightening clockwork and a linkage steel wire, the clockwork box is in a cylindrical shape and comprises upper and lower layer structures, the upper layer structure is provided with an annular steel wire groove along the outer periphery, a fixing hole is formed in the bottom of the steel wire groove, the linkage steel wire is wound in the steel wire groove, and the inner side end thereof is fixed by penetrating through the fixing hole, the lower layer structure of the clockwork box is internally hollow, the pre-tightening clockwork is fixed in the cavity of the lower layer structure after being provided with a pre-tightening tension, the upper layer structure of the clockwork box is provided with a transmission shaft along the axial direction at the center thereof, the transmission shaft is provided with a positioning portion, the outer side end of the linkage steel wire is connected with an anchor claw steel wire of a roof displacement monitoring device to conduct displacement transmission, the transmission shaft of the clockwork box is connected with a potentiometer of the roof displacement monitoring device and is clamped with the potentiometer through the positioning portion, and the monitored displacement is transmitted to the potentiometer.

[0009] Further, a clockwork guide groove is formed in the inner side of the shell wall of the lower layer structure, and the outer end of the pre-tightening clockwork is fixed in the clockwork guide groove, and the inner end is fixed to the shell of the roof displacement monitoring device.

[0010] Further, a shaft positioning hole is concave at the center of the lower layer structure of the clockwork box, the shaft positioning hole is used for connecting a shaft on the shell of the roof displacement monitoring device, and the inner end of the pre-tightening clockwork is fixed to the shaft of the roof displacement monitoring device.

[0011] The elastic linkage mechanism for roof displacement monitoring disclosed by the present application can be applied in a roof displacement monitoring device.

[0012] Further, the roof displacement monitoring device comprises a shell, a guide pipe, an anchor claw, a potentiometer, an electrical module and the elastic linkage mechanism as claimed in claim 3, the number of the anchor claw, the potentiometer and the elastic linkage mechanism is the same, the elastic linkage mechanism is arranged in the shell, the shaft positioning hole in the lower layer structure of the clockwork box of the elastic linkage mechanism is connected with the shaft on the shell, the inner side end of the pre-tightening clockwork is fixed to the shaft of the shell, and the linkage steel wire is connected with the anchor claw steel wire of the anchor claw.

[0013] Further, a fixed pipe is arranged at the upper middle part of the shell, the bottom end of the guide pipe is butted on the fixed pipe of the shell, a sliding block is arranged in the guide pipe, the sliding block cannot enter into the shell downwardly, the anchor claw steel wire of the anchor claw penetrates along the guide pipe and is butted with the linkage steel wire through the sliding block.

[0014] Further, the roof displacement monitoring device is provided with 4 anchor claws, 4 groups of elastic linkage mechanisms and 4 potentiometers. A cross slide rail is axially arranged in the guide tube. The cross slide rail divides the guide tube into 4 independent axial slideways. Sliders are respectively arranged in the 4 slideways of the guide tube. The anchor wires of the 4 anchor claws respectively penetrate into the 4 slideways of the guide tube and are docked with the linkage wires of the corresponding elastic linkage mechanisms through the sliders.

[0015] Further, the 4 elastic linkage mechanisms are arranged in a "field" shape in the housing. The housing is provided with circular spring box fixing positions corresponding to each elastic linkage mechanism. A shaft positioning hole for connecting the shaft of the spring box is arranged at the center of the spring box fixing position.

[0016] Further, pads are arranged at the two spring box fixing positions on the lower side. The two spring boxes installed on the lower side and the two spring boxes on the upper side are height - offset and not on the same plane.

[0017] Compared with the prior art, the progress of an elastic linkage mechanism for roof displacement monitoring and its application designed by this invention of patent for invention lies in: First, the elastic linkage mechanism of the present invention adopts a simple spring box structure and sets a pre - tightened spring, without the need to configure a manual adjustment mechanism, and there is no need for manual adjustment and then screwing tightly on - site. Assembly and use are more convenient;

[0018] Second, the spring box is provided with a linkage wire. During use, the tension of the pre - tightened spring can be adjusted again by pulling the linkage wire. After reaching the appropriate tension, the linkage wire is connected and tightened with the slider of the monitoring device, realizing the transformation of the passive elastic force of the spring from secondary conduction to an active elastic force, and flexibly adjusting the magnitude of the elastic force according to the actual situation, with flexible application;

[0019] Third, the roof displacement monitoring device is configured with 4 groups of anchor claws and elastic linkage mechanisms, which can realize four - point roof displacement monitoring. The guide tube uses a cross slide rail to separate 4 independent slideways for the docking of the anchor wires and the linkage wires. At the same time, the 4 elastic linkage mechanisms inside the monitoring device housing are installed in a staggered manner, avoiding the mutual influence of the wires of the 4 groups of power mechanical mechanisms during use and ensuring the smooth operation of each group of mechanisms. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic structural view of the spring box of the elastic linkage mechanism for roof displacement monitoring.

[0021] Figure 2 is a schematic cross - sectional structural view of the spring box of the elastic linkage mechanism for roof displacement monitoring.

[0022] Figure 3Is the top plate displacement monitoring elastic linkage mechanism of the spring box of the bottom structure schematic diagram.

[0023] Figure 4 Is the top plate displacement monitoring device of the front view schematic diagram of the structure.

[0024] Figure 5 Is the top plate displacement monitoring device of the side view schematic diagram of the structure.

[0025] Figure 6 Is the top plate displacement monitoring device of the shell part front view schematic diagram of the structure

[0026] In the figure, 1 spring box, 2 linkage wire, 3 pre-tightening spring, 11 wire groove, 12 transmission shaft, 13 spring guide groove, 14 rotating shaft positioning hole, 15 fixed hole, 4 shell, 5 anchor claw, 6 guide pipe, 7 potentiometer, 41 spring box fixed position, 42 rotating shaft, 43 spring fixed groove, 44 fixed tube, 61 cross slide rail, 62 sliding block. DETAILED DESCRIPTION

[0027] The application will be further described below in conjunction with the drawings and specific embodiments. The technical solutions in the embodiments of the application are described clearly and completely, and the described embodiments are only part of the embodiments of the application, not all. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the application.

[0028] Embodiment 1

[0029] The application discloses an embodiment of a top plate displacement monitoring elastic linkage mechanism. The elastic linkage mechanism in the embodiment comprises a spring box 1, a pre-tightening spring and a linkage wire. Figure 1 、 2 , 3, the spring box 1 is cylindrical, comprising upper and lower layer structures, wherein the upper layer structure is provided with an annular wire groove 11 along the outer periphery, the bottom of the wire groove 11 is provided with a fixed hole 15, the linkage wire is wound in the wire groove 11, and the inner side end penetrates through the fixed hole 15 and is connected and fixed. The center of the upper layer structure of the spring box 1 is provided with a transmission shaft 12 in the axial direction, and the end of the transmission shaft 12 is a semicircular positioning lever.

[0030] The inner part of the lower structure of the spring barrel 1 is a circular cavity. After the pre-tightening spring is set with a pre-tension force, it is fixed in the cavity of the lower structure. There is a spring guide groove 13 on the inner side of the shell wall of the lower structure. When the pre-tightening spring is fixed, its outer end is fixed in the spring guide groove 13, and its inner end is fixed to the shell of the roof displacement monitoring device. There is a shaft positioning hole 14 recessed inward at the center of the lower structure of the spring barrel 1. The shaft positioning hole 14 is used to connect the shaft on the shell of the roof displacement monitoring device. At the same time, the inner end of the pre-tightening spring is fixed on the shaft of the roof displacement monitoring device during installation.

[0031] The outer end of the linkage wire of the elastic linkage mechanism is connected to the anchor claw wire of the roof displacement monitoring device for displacement conduction. The transmission shaft of the spring barrel is connected to the potentiometer of the roof displacement monitoring device and is engaged with it through the positioning lever at its end to transmit the monitored displacement to the potentiometer.

[0032] Embodiment 2

[0033] Combined with Figure 4 、 5 As shown in FIGS. 6, the present invention patent also discloses a roof displacement monitoring device, which includes a shell 4, a guide tube 6, an anchor claw 5, a potentiometer 7, an electrical module and the elastic linkage mechanism as described in Embodiment 1. The potentiometer 7 is electrically connected to the electrical module. In this embodiment, 4 groups of anchor claws 5, potentiometers 7 and elastic linkage mechanisms are provided.

[0034] The 4 groups of elastic linkage mechanisms are arranged in a "field" shape and installed in the shell 4. The shell 4 is provided with circular spring barrel fixing positions 41 corresponding to each elastic linkage mechanism. Among them, pads are provided at the two spring barrel fixing positions on the lower side. The two spring barrels installed on the lower side and the two spring barrels on the upper side are height-displaced and not on the same plane. A shaft 42 is provided at the center of the spring barrel fixing position 41. The shaft 42 is connected to the shaft positioning hole 14 of the spring barrel 1, and the spring barrel rotates around the shaft 42. At the same time, the inner side end of the pre-tightening spring 3 is fixed in the spring positioning groove 43 of the shaft 42 of the shell 4.

[0035] The shell 4 is provided with a mounting plate on the upper side of the spring barrel. 4 groups of potentiometers 7 are installed on the mounting plate corresponding to the axial positions of the 4 groups of spring barrels for displacement conduction. The transmission shafts 12 of the 4 groups of spring barrels are respectively inserted into the 4 groups of potentiometers 7 and are engaged with the potentiometers through the positioning levers at their ends to drive them to rotate.

[0036] The upper middle part of the shell 4 is provided with a fixed pipe 44, and the bottom end of the guide pipe 6 is butted on the fixed pipe 44 of the shell 4. The bottom end of the fixed pipe 44 is provided with four through holes, and the through holes can only pass through the linkage steel wire 2. The guide pipe 6 is provided with a cross slide rail 61 in the axial direction, the cross slide rail 61 divides the guide pipe 6 into four independent slides, and the four slides are respectively provided with slide blocks 62. The top end of the guide pipe 6 is provided with a sealing cover, and the sealing cover is provided with four through holes. The anchor wire of the four anchor claws 5 respectively passes through the four slides of the guide pipe 6, and is butted with the linkage steel wire 2 of the corresponding elastic linkage mechanism through the slide block 62.

[0037] The roof displacement monitoring device disclosed by the application can adjust the tension of the pre-tightening spring by pulling the linkage steel wire during use, then fix the linkage steel wire and the slide block by using a self-tapping screw, then select an anchor wire with a proper length, and connect one end of the anchor wire with an anchor claw and the other end of the anchor wire with the slide block through the guide pipe 6. The anchor claw is fixed in the monitored point, when the roof is displaced, the anchor claw pulls the linkage steel wire connected with the anchor claw through the anchor wire, the linkage steel wire drives the spring box to rotate, the spring box transmits the displacement to the potentiometer through the transmission shaft, the potentiometer is responsible for converting the displacement signal into an electric signal, and the electric signal is transmitted outward by the electrical module.

[0038] The above is only a preferred embodiment of the application, and cannot limit the implementation range of the application. Any simple equivalent changes and modifications made according to the claims and the description of the application still belong to the scope of the application.

Claims

1. An elastic linkage mechanism for monitoring roof displacement, characterized in that, The elastic linkage mechanism includes a spring box, a pre-tightening spring and a linkage wire. The spring box is cylindrical and consists of upper and lower two-layer structures. The upper-layer structure is provided with an annular wire groove along the outer circumference. A fixing hole is opened at the bottom of the wire groove. The linkage wire is wound in the wire groove, and its inner end passes through the fixing hole for fixation. The inner part of the lower-layer structure of the spring box is a cavity. After the pre-tightening spring is set with a pre-tension force, it is fixed in the cavity of the lower-layer structure. A transmission shaft is arranged axially at the center of the upper-layer structure of the spring box. A positioning part is arranged on the transmission shaft. The outer end of the linkage wire is connected to the anchor claw wire of the roof displacement monitoring device for displacement conduction. The transmission shaft of the spring box is connected to the potentiometer of the roof displacement monitoring device and is engaged with it through the positioning part to transmit the monitored displacement to the potentiometer. A spring guide groove is opened on the inner side of the shell wall of the lower-layer structure. The outer end of the pre-tightening spring is fixed in the spring guide groove, and its inner end is fixed to the shell of the roof displacement monitoring device. A shaft positioning hole is recessed at the center of the lower-layer structure of the spring box. The shaft positioning hole is used to connect the shaft on the shell of the roof displacement monitoring device. The inner end of the pre-tightening spring is fixed on the shaft of the roof displacement monitoring device.

2. Application of the elastic linkage mechanism for roof displacement monitoring according to claim 1 in a roof displacement monitoring device.

3. A roof displacement monitoring device, characterised in that, The roof displacement monitoring device includes a shell, a guide tube, an anchor claw, a potentiometer, an electrical module and the elastic linkage mechanism according to claim 1. The number of the anchor claw, the potentiometer and the elastic linkage mechanism is the same. The elastic linkage mechanism is arranged in the shell. The shaft positioning hole in the lower-layer structure of its spring box is connected to the shaft on the shell. The inner end of the pre-tightening spring is fixed on the shaft of the shell. The linkage wire is connected to the anchor claw wire of the anchor claw.

4. A roof displacement monitoring device according to claim 3, characterised in that A fixed tube is arranged in the middle of the upper side of the shell. The bottom end of the guide tube is butted against the fixed tube of the shell. A slider is arranged in the guide tube. The slider cannot enter the shell downward. The anchor claw wire of the anchor claw penetrates into the guide tube and is butted against the linkage wire through the slider.

5. A roof displacement monitoring device according to claim 4, wherein The roof displacement monitoring device is provided with 4 anchor claws, 4 groups of elastic linkage mechanisms and 4 potentiometers. A cross slide rail is arranged axially in the guide tube. The cross slide rail divides the guide tube into 4 independent slideways. Sliders are respectively arranged in the 4 slideways of the guide tube. The anchor claw wires of the 4 anchor claws respectively penetrate into the 4 slideways of the guide tube and are butted against the linkage wires of the corresponding elastic linkage mechanisms through the sliders.

6. A roof displacement monitoring device according to claim 5, wherein The 4 elastic linkage mechanisms are arranged and installed in the shell in a "field" shape. The shell is provided with circular spring box fixing positions corresponding to each elastic linkage mechanism. A shaft positioning hole for connecting the shaft of the spring box is arranged at the center of the spring box fixing position.

7. A roof displacement monitoring device according to claim 6, wherein Pads are arranged at the two spring box fixing positions on the lower side. The two spring boxes installed on the lower side and the two spring boxes on the upper side are height-displaced and not on the same plane.

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