Tunnel surrounding rock stress monitoring device

Abstract

The utility model discloses a tunnel surrounding rock stress monitoring device, and belongs to the field of stress monitoring, the tunnel surrounding rock stress monitoring device comprises a sleeve, the sleeve is internally provided with a length adjusting mechanism, the length adjusting mechanism comprises a moving rod, the moving rod is slidably connected with the sleeve, and the interior of the moving rod is in threaded connection with a bolt. A plurality of through holes are formed in the surface of the sleeve, the through holes are evenly distributed in the surface of the sleeve, the through holes are matched with the bolts, and a positioning frame is fixedly connected to the side, away from the sleeve, of the moving rod. And a bolt is rotated to penetrate through a through hole to enter the moving rod to position the moving rod, so that the problem that according to an existing tunnel surrounding rock stress monitoring device, when a drilled hole is too deep, the length of a supporting frame cannot be adjusted, and consequently the monitoring device cannot be placed at a designated place is solved, and the practicability is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to stress monitoring technology field, especially to a tunnel surrounding rock stress monitoring device. BACKGROUND

[0002] In the published patent with the authorization announcement number CN209372271U, a kind of roadway surrounding rock stress monitoring device is disclosed, belong to test equipment field, the monitoring device includes strain gauge (1), air bag module (2), support frame (3), data acquisition module (4), strain gauge (1) is fixed on air bag module (2), air bag module (2) is placed on support frame (3), strain gauge (1) outside is coated with adhesive, air bag module (2) can be when swelling, strain gauge (1) is braced outward, and strain gauge (1) is pasted to hole wall, strain gauge (1) is fixed to hole wall under the action of adhesive, hole wall is deformed under the action of external pressure, deformation is collected by data acquisition module (4) by strain gauge (1) collection storage, this kind of monitoring device can be very easily realized roadway surrounding rock stress monitoring, and it has very important positive significance to improve the safety, reliability of roadway construction.

[0003] The above device is placed in the position needing monitoring by drilling hole in the surface of surrounding rock and pushing support frame when being implemented, and the existing tunnel surrounding rock stress monitoring device cannot adjust the length of support frame when drilling hole is too deep, so that the monitoring device cannot be placed in the specified place. CONTENT OF THE INVENTION

[0004] In view of the deficiencies of the prior art, the present application provides a tunnel surrounding rock stress monitoring device, which overcomes the deficiencies of the prior art and aims to solve the problems in the background art.

[0005] To achieve the above-mentioned purpose, the following technical scheme is adopted in the present application: a tunnel surrounding rock stress monitoring device, comprising a sleeve, a length adjusting mechanism is arranged inside the sleeve, the length adjusting mechanism comprises a moving rod, the moving rod is in sliding connection with the sleeve, a screw is threadedly connected to the inside of the moving rod, a plurality of through holes are formed on the surface of the sleeve, the plurality of through holes are uniformly distributed on the surface of the sleeve, the through holes are matched with the screw, a positioning frame is fixedly connected to the side of the moving rod away from the sleeve, a supporting mechanism is arranged inside the positioning frame, a detection mechanism is arranged on one side of the supporting mechanism, and a positioning mechanism is arranged between the detection mechanism and the positioning frame.

[0006] As a preferred embodiment, two limiting rods are fixedly connected to the outside of the moving rod, the two limiting rods are symmetrically distributed on the outside of the moving rod, a sliding groove is formed on the surface of the sleeve, the limiting rods are located inside the sliding groove, and the limiting rods are in sliding connection with the sliding groove.

[0007] By adopting the technical scheme, the movement of the movement rod in the sleeve can be better realized through the limiting of the limiting rod by the sliding groove and the sliding of the limiting rod in the sliding groove.

[0008] As a preferred implementation form, the supporting mechanism comprises a motor fixedly connected with the positioning frame, a threaded rod fixedly connected with the output end of the motor, the threaded rod in rotational connection with the positioning frame, a movement block in threaded connection with the outer portion of the threaded rod, the movement block in sliding connection with the positioning frame, a supporting rod in rotational connection with the surface of the movement block, a supporting plate in rotational connection with the side, away from the movement block, of the supporting rod, and a rotating frame provided between the supporting plate and the positioning frame, the supporting plate and the positioning frame both in rotational connection with the rotating frame.

[0009] By adopting the technical scheme, the supporting plate can be better opened by connecting the supporting plate and the positioning frame through the rotating frame, rotating the threaded rod through the output end of the motor, moving the movement block on the surface of the positioning frame through the rotation of the threaded rod, moving the supporting rod through the movement of the movement block, and supporting the supporting plate through the supporting rod.

[0010] As a preferred implementation form, the detection mechanism comprises a wire harness fixing frame in sliding connection with the positioning frame, a wire fixedly connected with one side of the wire harness fixing frame, and a strain gauge fixedly connected with the end, away from the wire harness fixing frame, of the wire.

[0011] By adopting the technical scheme, the stress of the tunnel surrounding rock can be better monitored by connecting the strain gauge and the wire harness fixing frame through the wire and monitoring the stress of the tunnel surrounding rock through the strain gauge.

[0012] As a preferred implementation form, the positioning mechanism comprises a positioning rod fixedly connected with the positioning frame, and a positioning groove provided in the surface of the wire harness fixing frame and matched with the positioning rod.

[0013] By adopting the technical scheme, the positioning frame and the wire harness fixing frame can be better connected by inserting the positioning rod into the inside of the positioning groove, rotating the movement rod and the positioning frame through the rotating sleeve, and disconnecting the positioning frame and the wire harness fixing frame by separating the positioning rod from the inside of the positioning groove.

[0014] As a preferred implementation form, the side, close to the supporting plate, of the strain gauge is provided with a weak adhesive layer, and the side, away from the supporting plate, of the strain gauge is fixedly connected with an adhesive layer.

[0015] By adopting the technical scheme, the strain gauge is fixed on the surface of the tunnel surrounding rock through the weak adhesive layer on the side close to the support plate, the strain gauge is fixed on the surface of the tunnel surrounding rock through the weak adhesive layer, and the strain gauge is fixed on the surface of the tunnel surrounding rock through the weak adhesive layer.

[0016] As a preferred embodiment, the surface of the sleeve is fixedly connected with a controller, and the controller is electrically connected with the motor.

[0017] By adopting the technical scheme, the controller is electrically connected with the motor, and the controller controls the switch of the motor, so that the switch of the motor can be better controlled.

[0018] As a preferred embodiment, one side of the wire harness fixing frame is electrically connected with a data acquisition module.

[0019] By adopting the technical scheme, one side of the wire harness fixing frame is electrically connected with the data acquisition module, and the data acquisition module transmits data in real time, so that the tunnel surrounding rock stress can be better detected.

[0020] The beneficial effects of the present application are as follows:

[0021] 1. The tunnel surrounding rock stress monitoring device is provided with a moving rod, a through hole and a bolt, the moving rod is moved in the sleeve by pulling the moving rod, the bolt is inserted into the moving rod through the through hole by rotating the bolt, and the moving rod is positioned, so that the existing tunnel surrounding rock stress monitoring device cannot adjust the length of the support frame when the drilling is too deep, the monitoring device cannot be placed at the specified location, and the practicality is improved.

[0022] 2. The tunnel surrounding rock stress monitoring device is provided with a positioning rod and a positioning groove, the positioning rod is inserted into the positioning groove to connect the positioning frame and the wire harness fixing frame, the sleeve is rotated to rotate the moving rod and the positioning frame, and the positioning rod is separated from the positioning groove to disconnect the positioning frame and the wire harness fixing frame, so that the existing tunnel surrounding rock stress monitoring device cannot connect the positioning frame and the wire harness fixing frame, and the practicality is improved. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is a front structure schematic view of the present application;

[0024] Figure 2 It is a front structure sectional view of the present application;

[0025] Figure 3 It is a detection mechanism structure schematic view of the present application;

[0026] Figure 4 Supporting mechanism structure schematic diagram of the present application.

[0027] Figure label: 1, sleeve; 2, length adjusting mechanism; 21, moving rod; 22, through hole; 23, bolt; 3, supporting mechanism; 31, supporting plate; 32, threaded rod; 33, supporting rod; 34, moving block; 35, motor; 4, detection mechanism; 41, strain gauge; 42, wire; 43, wire harness fixing frame; 5, positioning mechanism; 51, positioning rod; 52, positioning groove; 6, data acquisition module; 7, positioning frame; 8, limiting rod; 9, sliding groove; 10, controller; 11, rotating frame. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all embodiments.

[0029] Reference Figures 1-2 A tunnel surrounding rock stress monitoring device, including sleeve 1, the inside of sleeve 1 is equipped with length adjusting mechanism 2, length adjusting mechanism 2 includes moving rod 21, moving rod 21 and sleeve 1 slidingly connected, the inside of moving rod 21 is screw connected with bolt 23, the surface of sleeve 1 is equipped with several through holes 22, several through holes 22 are evenly distributed on the surface of sleeve 1, through hole 22 is adapted to bolt 23, the outside of moving rod 21 is fixedly connected with two limiting rods 8, two limiting rods 8 are symmetrically distributed on the outside of moving rod 21, the surface of sleeve 1 is equipped with sliding groove 9, limiting rod 8 is located in the inside of sliding groove 9, and limiting rod 8 and sliding groove 9 are slidingly connected;Limiting rod 8 is limited through sliding groove 9, then limiting rod 8 is slid in the inside of sliding groove 9, moving rod 21 can be better slid in the inside of sleeve 1.

[0030] Reference Figures 1-4The side, away from the sleeve 1, of the moving rod 21 is fixedly connected with a positioning frame 7, the inside of the positioning frame 7 is provided with a supporting mechanism 3, the supporting mechanism 3 comprises a motor 35, the motor 35 is fixedly connected with the positioning frame 7, the output end of the motor 35 is fixedly connected with a threaded rod 32, the threaded rod 32 is rotatably connected with the positioning frame 7, the outside of the threaded rod 32 is threadedly connected with a moving block 34, the moving block 34 is slidably connected with the positioning frame 7, the surface of the moving block 34 is rotatably connected with a supporting rod 33, the side, away from the moving block 34, of the supporting rod 33 is rotatably connected with a supporting plate 31, the supporting plate 31 and the positioning frame 7 are provided with a rotating frame 11, the supporting plate 31 and the positioning frame 7 are rotatably connected with the rotating frame 11; the supporting plate 31 and the positioning frame 7 are connected through the rotating frame 11, then the output end of the motor 35 is rotated to drive the threaded rod 32 to rotate, then the threaded rod 32 is rotated to drive the moving block 34 to move on the surface of the positioning frame 7, then the moving block 34 is moved to drive the supporting rod 33 to move, then the supporting rod 33 supports the supporting plate 31, and the supporting plate 31 is expanded, so that the supporting plate 31 can be better expanded.

[0031] With reference to Figures 1-4 The side of the supporting mechanism 3 is provided with a detection mechanism 4, the detection mechanism 4 comprises a wire harness fixing frame 43, the wire harness fixing frame 43 is slidably connected with the positioning frame 7, the side of the wire harness fixing frame 43 is fixedly connected with a wire 42, and the end, away from the wire harness fixing frame 43, of the wire 42 is fixedly connected with a strain gage 41; the strain gage 41 is connected with the wire harness fixing frame 43 through the wire 42, the stress of the tunnel surrounding rock is monitored by the strain gage 41, and the stress of the tunnel surrounding rock can be better monitored.

[0032] With reference to Figures 3-4 The detection mechanism 4 and the positioning frame 7 are provided with a positioning mechanism 5, the positioning mechanism 5 comprises a positioning rod 51, the positioning rod 51 is fixedly connected with the positioning frame 7, the surface of the wire harness fixing frame 43 is provided with a positioning groove 52, and the positioning groove 52 is matched with the positioning rod 51; the positioning frame 7 and the wire harness fixing frame 43 are connected by inserting the positioning rod 51 into the inside of the positioning groove 52, the positioning frame 7 and the wire harness fixing frame 43 are disconnected by the positioning rod 51 being separated from the inside of the positioning groove 52, and the positioning frame 7 and the wire harness fixing frame 43 can be better connected.

[0033] With reference to Figures 1-4The side close to the supporting plate 31 of the strain gauge 41 is provided with a weak adhesive layer, and the side away from the supporting plate 31 of the strain gauge 41 is fixedly connected with a sticky layer; the strain gauge 41 is fixed on the surface of the supporting plate 31 through the weak adhesive layer provided on the side close to the supporting plate 31 of the strain gauge 41, and the strain gauge 41 is fixed on the surface of the tunnel surrounding rock through the sticky layer fixedly connected with the side away from the supporting plate 31 of the strain gauge 41, so that the strain gauge 41 can be better fixed.

[0034] With reference to Figures 1-2 The surface of the sleeve 1 is fixedly connected with a controller 10, and the controller 10 is electrically connected with the motor 35; the controller 10 can better control the switch of the motor 35 through the electrical connection between the controller 10 and the motor 35.

[0035] With reference to Figures 1-4 The side of the wire harness fixing frame 43 is electrically connected with a data acquisition module 6; the data acquisition module 6 can better detect the stress of the tunnel surrounding rock through the real-time transmission of data.

[0036] Working principle: drill a hole on the surface of the surrounding rock, move the moving rod 21 in the sleeve 1 by pulling the moving rod 21, position the moving rod 21 by rotating the bolt 23 to pass through the through hole 22 and enter the inside of the moving rod 21, fix the strain gauge 41 on the surface of the supporting plate 31 through the weak adhesive layer provided on the side close to the supporting plate 31 of the strain gauge 41, connect the supporting plate 31 and the positioning frame 7 through the rotating frame 11, rotate the threaded rod 32 through the output end of the motor 35, move the moving block 34 on the surface of the positioning frame 7 through the rotation of the threaded rod 32, move the supporting rod 33 through the movement of the moving block 34, support the supporting plate 31 through the supporting rod 33, expand the supporting plate 31, tightly adhere the strain gauge 41 to the inside of the hole, stick the strain gauge 41 on the surface of the surrounding rock, connect the positioning frame 7 and the wire harness fixing frame 43 by inserting the positioning rod 51 into the positioning groove 52, rotate the sleeve 1 to rotate the moving rod 21 and the positioning frame 7, disconnect the positioning frame 7 and the wire harness fixing frame 43 by separating the positioning rod 51 from the inside of the positioning groove 52, leave the strain gauge 41 and the wire harness fixing frame 43 in the hole, connect the strain gauge 41 and the wire harness fixing frame 43 through the wire 42, and monitor the stress of the tunnel surrounding rock through the strain gauge 41.

[0037] In the description of the utility model, it is necessary to explain that, the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate the position relationship based on the position relationship shown in the drawing, only for the convenience of describing the utility model and simplifying the description, and not indicate or imply that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the utility model. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0038] In the description of the utility model, it is necessary to explain that, unless otherwise expressly provided and limited, the terms "mounting", "provided with", "connection" and the like should be broadly understood, for example, "connection" can be fixed connection, can also be detachable connection, or integral connection; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific situation.

[0039] The utility model has been described above in combination with specific embodiments, but those skilled in the art should know that these descriptions are exemplary, and are not a limitation on the protection scope of the utility model. Those skilled in the art can make various modifications and changes to the utility model according to the spirit and principles of the utility model, and these modifications and changes are also within the scope of the utility model.

Claims

1. A tunnel surrounding rock stress monitoring device, comprising a sleeve (1), characterized in that, The sleeve (1) is provided with a length adjustment mechanism (2) inside. The length adjustment mechanism (2) includes a moving rod (21). The moving rod (21) is slidably connected to the sleeve (1). The moving rod (21) is threaded with a bolt (23). The surface of the sleeve (1) is provided with several through holes (22). The several through holes (22) are evenly distributed on the surface of the sleeve (1). The through holes (22) are adapted to the bolts (23). A positioning frame (7) is fixedly connected to the side of the moving rod (21) away from the sleeve (1). The positioning frame (7) is provided with a support mechanism (3) inside. A detection mechanism (4) is provided on one side of the support mechanism (3). A positioning mechanism (5) is provided between the detection mechanism (4) and the positioning frame (7).

2. The tunnel surrounding rock stress monitoring device according to claim 1, characterized in that, The movable rod (21) is fixedly connected to two limiting rods (8). The two limiting rods (8) are symmetrically distributed on the outside of the movable rod (21). The sleeve (1) has a sliding groove (9) on its surface. The limiting rod (8) is located inside the sliding groove (9) and the limiting rod (8) is slidably connected to the sliding groove (9).

3. The tunnel surrounding rock stress monitoring device according to claim 1, characterized in that, The support mechanism (3) includes a motor (35), which is fixedly connected to the positioning frame (7). A threaded rod (32) is fixedly connected to the output end of the motor (35). The threaded rod (32) is rotatably connected to the positioning frame (7). A moving block (34) is threadedly connected to the outside of the threaded rod (32). The moving block (34) is slidably connected to the positioning frame (7). A support rod (33) is rotatably connected to the surface of the moving block (34). A support plate (31) is rotatably connected to the side of the support rod (33) away from the moving block (34). A rotating frame (11) is provided between the support plate (31) and the positioning frame (7). Both the support plate (31) and the positioning frame (7) are rotatably connected to the rotating frame (11).

4. The tunnel surrounding rock stress monitoring device according to claim 1, characterized in that, The testing mechanism (4) includes a wire harness fixing frame (43), which is slidably connected to the positioning frame (7). A wire (42) is fixedly connected to one side of the wire harness fixing frame (43), and a strain gauge (41) is fixedly connected to the end of the wire (42) away from the wire harness fixing frame (43).

5. A tunnel surrounding rock stress monitoring device according to claim 4, characterized in that, The positioning mechanism (5) includes a positioning rod (51), which is fixedly connected to the positioning frame (7). The surface of the wire harness fixing frame (43) is provided with a positioning groove (52), which is adapted to the positioning rod (51).

6. A tunnel surrounding rock stress monitoring device according to claim 4, characterized in that, The strain gauge (41) has a weak adhesive layer on the side close to the support plate (31), and an adhesive layer is fixedly connected on the side of the strain gauge (41) away from the support plate (31).

7. A tunnel surrounding rock stress monitoring device according to claim 3, characterized in that, A controller (10) is fixedly connected to the surface of the sleeve (1), and the controller (10) is electrically connected to the motor (35).

8. A tunnel surrounding rock stress monitoring device according to claim 4, characterized in that, A data acquisition module (6) is electrically connected to one side of the wire harness fixing bracket (43).

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