Tunnel surrounding rock multi-point displacement mechanical measuring device

Abstract

The invention relates to the technical field of tunnel construction measuring devices, and discloses a tunnel surrounding rock multipoint displacement mechanical measuring device, which comprises a base, a storage battery box and a data transceiving box, and is characterized in that a square plate is fixed at the bottom of the storage battery box, and the square plate and the base are fixedly connected through a connecting column; the four mounting plates are fixed to the bottom of the square plate and distributed in an annular array mode, a telescopic frame is arranged below the bottoms of the mounting plates, a connecting block is fixed to the middle of one end of the telescopic frame, a fixing piece is installed on the connecting block, and the connecting block is detachably connected with a laser ranging probe through the fixing piece; according to the invention, by improving the existing multi-point measuring device, the synchronous unit drives the plurality of swing units to swing back and forth, so that the detection position of the laser ranging probe is automatically changed, the flexibility of the laser ranging probe is improved, the measuring range is further expanded, and the multi-point measurement of the surrounding rock of the tunnel is realized; and the surrounding rock deformation measurement is more accurate.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of tunnel construction measurement devices, in particular to a tunnel surrounding rock multi-point displacement mechanical measurement device. BACKGROUND

[0002] In tunnel construction engineering, the collapse of loose and broken surrounding rock mass, the local and overall radial large deformation and collapse of soft and swelling soil rock mass, mountain deformation, and rock burst in hard and complete rock mass will all cause surrounding rock deformation. Surrounding rock deformation is caused by the action of external factors (such as stress change). When a tunnel is excavated in a rock mass, the stress of the originally balanced rock mass changes, and this deformation poses a certain risk to the safety of tunnel construction.

[0003] Currently, the measurement of internal displacement of surrounding rock is to install a displacement sensor in the installation hole drilled on the surrounding rock. This measurement method usually measures only a single point. Since the deformation of the surrounding rock is local, it may cause inaccurate measurement. Although there are also multi-point displacement meters, the layout of the multi-point displacement meter is usually one main displacement meter plus two or three branch displacement meters arranged horizontally and vertically. The main displacement meter and the branch displacement meter are located in the same plane, so the displacement meter is more likely to move with the surrounding rock. SUMMARY

[0004] The purpose of the present application is to provide a tunnel surrounding rock multi-point displacement mechanical measurement device to solve the problem of inaccurate measurement results in the background art.

[0005] To achieve the above purpose, the present application provides the following technical solution: a tunnel surrounding rock multi-point displacement mechanical measurement device, comprising a base, a battery box and a data transceiver box, a square plate is fixed to the bottom of the battery box, and the square plate and the base are fixedly connected through a connecting column; further comprising: four mounting plates fixed to the bottom of the square plate and arranged in a ring array, a telescopic frame is provided below the bottom of the mounting plate, a connecting block is fixed to the middle of one end of the telescopic frame, a fixing piece is installed on the connecting block, and a laser ranging probe is detachably connected to the connecting block through the fixing piece; and a swing unit installed on the bottom of the mounting plate, the output end of the swing unit is fixed to the end of the telescopic frame, a synchronization unit is installed at the middle position of the bottom of the square plate, and a heat dissipation unit is further provided between the battery box and the data transceiver box.

[0006] Preferably, the swing unit comprises a worm, a worm wheel, a first rotating shaft, a rotating wheel, a connecting rod, a first crank and a second rotating shaft, the worm and the worm wheel are in meshing connection, both sides of the worm are in rotary connection with the mounting plate through bearing seats, the first rotating shaft is in fixed sleeve connection with the worm wheel, both sides of the first rotating shaft are in rotary connection with the mounting plate through bearings, the rotating wheel is fixed at both ends of the first rotating shaft, the connecting rod is in rotary connection at a position close to the edge on one side of the rotating wheel, the first crank is in rotary connection with one end of the connecting rod away from the rotating wheel, one end of the first crank away from the connecting rod is in rotary connection with the second rotating shaft, one end of the second rotating shaft is in fixed connection with the end of the telescopic frame, the second rotating shaft is in rotary connection with the mounting plate through a bearing seat, and the output end of the synchronous unit is in transmission connection with the worm.

[0007] Preferably, the synchronous unit comprises a slewing bearing, an end face gear ring and a first gear, the slewing bearing is fixed at the bottom of the square plate, the end face gear ring is in rotary connection on the outer side of the slewing bearing, the first gear is in meshing connection with the end face gear ring, the number of the first gear is four groups, one end of the worm is in fixed connection with the first gear, and one of the mounting plates is fixedly provided with a driving member.

[0008] Preferably, the driving member comprises a driving motor, a support is fixed on the outer side of the driving motor, one end of the support is in fixed connection with the mounting plate, a third rotating shaft is fixed on the output end of the driving motor, the third rotating shaft is in rotary connection with the mounting plate, a driving bevel gear is fixed on the bottom end of the third rotating shaft, a driven bevel gear is in meshing connection with the driving bevel gear, one end of the driven bevel gear is in fixed connection with one of the worms, and a transmission member is in transmission connection between the third rotating shaft and the heat dissipation unit.

[0009] Preferably, the heat dissipation unit comprises a suction cylinder, a piston block, a piston rod, a transmission plate, a second crank and a sliding pin, an L-shaped plate is fixed on one end of the suction cylinder, the suction cylinder is fixed on the square plate through the L-shaped plate, the piston block is in sliding connection in the suction cylinder, one end of the piston rod is fixed with the piston block, the piston rod and the suction cylinder are in sliding through connection, the other end of the piston rod is fixed with the middle part of the transmission plate, the transmission plate is in sliding sleeve connection with the sliding pin, the bottom of the sliding pin is fixed on one end of the second crank, one-way valves are installed on both sides of the suction cylinder, one end of one of the air inlet pipes away from the suction cylinder is in communication with the inside of the battery box, one end of the other air inlet pipe away from the suction cylinder is in communication with the inside of the data transceiver box, a air outlet pipe is installed on one end of the suction cylinder away from the piston rod through a one-way valve, and the output end of the transmission member is in transmission connection with the second crank.

[0010] Preferably, the transmission member comprises a third gear fixed to the second crank bottom, the middle shaft of the third gear is rotatably connected to the square plate through a bearing, the third gear is connected with a second gear in meshing mode, and the second gear is fixedly connected with the third rotating shaft sleeve.

[0011] Preferably, the fixing member comprises a bidirectional stud, a limiting block, a moving block, a connecting plate and a clamping block, the bidirectional stud is rotatably connected to the limiting block through a bearing, one end of the limiting block is fixedly connected to the connecting block, the moving block is threadedly connected to the bidirectional stud, the moving block is fixedly connected to the clamping block through the connecting plate, the connecting block is fixed with limiting columns on the upper side and the lower side, the connecting plate is slidably sleeved with the limiting columns, and one end of the bidirectional stud is fixed with a bolt head.

[0012] Preferably, the bottom of the square plate is fixed with a connecting table, and the bottom of the connecting table is fixed with three anchor rods.

[0013] Preferably, a data transceiving antenna is mounted on the base, and the data transceiving antenna is electrically connected to the data transceiving box through a data line.

[0014] Preferably, a monitoring probe is further mounted on the base, and the monitoring probe is electrically connected to the battery box through an electric wire.

[0015] Compared with the prior art, the present application has the following beneficial effects:

[0016] The present application improves the existing multi-point measuring device, drives multiple swing units to reciprocate through a synchronous unit, thereby automatically changing the detection position of the laser ranging probe, improves the flexibility of the laser ranging probe, and further expands the measurement range, realizes multi-point measurement of the surrounding rock of the tunnel, and makes the surrounding rock deformation measurement more accurate. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present application;

[0018] Figure 2 It is a schematic diagram of the side view of the present application;

[0019] Figure 3 It is Figure 1 It is a structural schematic diagram from another perspective;

[0020] Figure 4 It is a structural schematic diagram of the swing unit of the present application;

[0021] Figure 5 It is a structural schematic diagram of the synchronous unit of the present application;

[0022] Figure 6 It is a structural schematic diagram of the driving member of the present application;

[0023] Figure 7 Structure diagram of the transmission member and the heat dissipation unit of the application;

[0024] Figure 8 Structure diagram of the fixing member of the application.

[0025] In the figure: 1, base; 2, battery box; 3, data transceiver box; 4, square plate; 5, mounting plate; 6, telescopic frame; 7, connecting block; 8, fixing member; 9, laser ranging probe; 10, swing unit; 11, synchronization unit; 12, heat dissipation unit; 13, worm; 14, worm wheel; 15, No. 1 rotating shaft; 16, rotating wheel; 17, connecting rod; 18, first crank; 19, No. 2 rotating shaft; 20, slewing bearing; 21, face gear; 22, No. 1 gear; 23, driving member; 24, driving motor; 25, bracket; 26, No. 3 rotating shaft; 27, driving bevel gear; 28, driven bevel gear; 29, transmission member; 30, suction cylinder; 31, piston block; 32, piston rod; 33, transmission plate; 34, second crank; 35, sliding pin; 36, L-shaped plate; 37, air inlet pipe; 38, air outlet pipe; 39, No. 3 gear; 40, No. 2 gear; 41, bidirectional stud; 42, limiting block; 43, moving block; 44, connecting plate; 45, clamping block; 46, limiting column; 47, bolt head; 48, connecting table; 49, anchor rod; 50, data transceiver antenna; 51, monitoring probe. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the application will be clearly and completely described below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the application.

[0027] Embodiment one: please refer to Figure 1 - Figure 3 , a kind of tunnel surrounding rock multipoint displacement mechanical measuring device in the drawing, including base 1, battery box 2 and data transceiver box 3, the bottom of the battery box 2 is fixed with square plate 4, the square plate 4 and the base 1 are fixedly connected by connecting column, power supply can be carried out for equipment by battery box 2, and data transceiver box 3 can be collected and arranged and sent to remote displacement data measured and real-time monitoring effect;

[0028] Further include: fixed in the bottom of the square plate 4 and in the form of annular array of four mounting plate 5, the bottom of the mounting plate 5 is provided with telescopic frame 6, one end of the telescopic frame 6 is fixed with connecting block 7, the connecting block 7 is provided with fixing piece 8, the connecting block 7 is detachably connected with laser ranging probe 9 through the fixing piece 8, a plurality of swing units 10 are driven by synchronous unit 11 to reciprocating swing, so as to automatically change the detection position of laser ranging probe 9, improve the flexibility of laser ranging probe 9, and further expand the measurement range, realize the measurement of surrounding rock of tunnel at multiple points, make the deformation measurement of surrounding rock more accurate;

[0029] Wherein, the model of laser ranging probe 9 is ZYT-0100, which has high precision measurement ability, can accurately capture the small displacement change of tunnel surrounding rock surface, the emitted laser beam can propagate in a straight line, and is reflected back after meeting the measured object surface, which is received by photoelectric receiver, the distance information is obtained by calculating the round trip time of laser beam, and the displacement amount is calculated, the laser ranging probe 9 also has good anti-interference performance, can work stably in complex environment, ensure the accuracy of measurement data, in addition, the design of laser ranging probe 9 makes it easy to install and maintain, improve the operability and practicability of the whole measuring device;

[0030] And, the swing unit 10 installed on the bottom of the mounting plate 5, the output end of the swing unit 10 is fixed with the end of the telescopic frame 6, the synchronous unit 11 is installed at the middle position of the bottom of the square plate 4, the heat dissipation unit 12 is further provided between the battery box 2 and the data transceiver box 3, which realizes the heat dissipation effect of the data transceiver box 3, avoids the damage of the equipment caused by the high temperature inside the data transceiver box 3, and improves the service life of the equipment.

[0031] Further, refer to Figure 3 And Figure 4The swing unit 10 comprises a worm 13, a worm wheel 14, a first rotating shaft 15, a rotating wheel 16, a connecting rod 17, a first crank 18 and a second rotating shaft 19, the worm 13 and the worm wheel 14 are in meshing connection, both sides of the worm 13 are rotatably connected with the mounting plate 5 through bearing seats, the first rotating shaft 15 is fixedly sleeved with the worm wheel 14, both sides of the first rotating shaft 15 are rotatably connected with the mounting plate 5 through bearings, the rotating wheel 16 is fixed at both ends of the first rotating shaft 15, the connecting rod 17 is rotatably connected at a position close to the edge on one side of the rotating wheel 16, the first crank 18 is rotatably connected with one end of the connecting rod 17 away from the rotating wheel 16, one end of the first crank 18 away from the connecting rod 17 is rotatably connected with the second rotating shaft 19, one end of the second rotating shaft 19 is fixedly connected with the end of the telescopic frame 6, the second rotating shaft 19 is rotatably connected with the mounting plate 5 through a bearing seat, and the output end of the synchronous unit 11 is in transmission connection with the worm 13.

[0032] Specifically, the worm 13 is driven to rotate by the power unit, the worm 13 drives the worm wheel 14 to rotate, the worm wheel 14 drives the first rotating shaft 15 to rotate, the first rotating shaft 15 drives the rotating wheel 16 to rotate, the rotating wheel 16 drives the connecting rod 17 to rotate, the connecting rod 17 drives the first crank 18 to rotate, and the first crank 18 drives the second rotating shaft 19 to rotate, since the connecting rod 17 is longer than the first crank 18, the angle of rotation of the first crank 18 is less than 180 degrees, thereby enabling the second rotating shaft 19 to be reversely rotated, so as to drive the telescopic frame 6 to reciprocate up and down in the vertical plane, so that the laser ranging probe 9 at one end of the telescopic frame 6 is automatically swung, thereby automatically changing the detection position of the laser ranging probe 9, improving the flexibility of the laser ranging probe 9, and further expanding the measurement range, realizing the measurement of the surrounding rock of the tunnel at multiple points, and making the surrounding rock deformation measurement more accurate.

[0033] In addition, referring to Figure 5 The synchronous unit 11 comprises a slewing bearing 20, an end face gear ring 21 and a first gear 22, the slewing bearing 20 is fixed at the bottom of the square plate 4, the end face gear ring 21 is rotatably connected on the outer side of the slewing bearing 20, the first gear 22 is in meshing connection with the end face gear ring 21, the number of the first gear 22 is four groups, one end of the worm 13 is fixedly connected with the first gear 22, and one of the mounting plates 5 is fixedly installed with a driving piece 23.

[0034] Specifically, when the worm 13 rotates, one of the first gears 22 is also rotated, the first gear 22 drives the end face gear ring 21 to rotate, thereby driving the other first gears 22 to rotate, so that the four-position worm 13 can rotate synchronously, and further drive the four-position laser ranging probe 9 to swing, so that the laser ranging probe 9 can obtain multiple sets of measurement data, and ensure the reliability of the measurement effect.

[0035] Further, referring to Figure 1 and Figure 6 , the driving member 23 comprises a driving motor 24, the outer side of the driving motor 24 is fixedly connected with a support 25, one end of the support 25 is fixedly connected with the mounting plate 5, the output end of the driving motor 24 is fixedly connected with a third rotating shaft 26, the third rotating shaft 26 is rotationally connected with the mounting plate 5, the bottom end of the third rotating shaft 26 is fixedly connected with a driving bevel gear 27, the driving bevel gear 27 is meshingly connected with a driven bevel gear 28, the driven bevel gear 28 is fixedly connected with one end of the worm 13, and the third rotating shaft 26 and the heat dissipation unit 12 are transmissionally connected with a transmission member 29.

[0036] Specifically, the driving motor 24 drives the third rotating shaft 26 to rotate, the third rotating shaft 26 drives the driving bevel gear 27 to rotate, the driving bevel gear 27 drives the driven bevel gear 28 to rotate, and the driven bevel gear 28 drives the worm 13 to rotate, thereby driving the swinging unit 10 to work.

[0037] In addition, referring to Figure 3 , the bottom of the square plate 4 is fixedly connected with a connecting table 48, and the bottom of the connecting table 48 is fixedly connected with three anchor rods 49, the entire device is fixed in the tunnel surrounding rock through the connecting table 48 and the anchor rods 49, the stability of the device during the measurement is ensured, the measurement error caused by the shaking of the device is avoided, the anchor rods 49 can be deeply inserted into the surrounding rock, and strong supporting force is provided, and the structure of the connecting table 48 also increases the contact area of the device and the surrounding rock, and further improves the firmness of the fixation.

[0038] It should be noted that, referring to Figure 2 , the base 1 is provided with a data transceiver antenna 50, the data transceiver antenna 50 is electrically connected with the data transceiver box 3 through a data line, is used for transmitting measurement data to an external receiving device, the design of the data transceiver antenna 50 makes the data transmission more stable and reliable, and is not affected by the complex environment inside the tunnel; meanwhile, the connection mode of the data line and the data transceiver box 3 also ensures the continuity and accuracy of the data transmission, thereby ensuring the reliability of the measurement result.

[0039] In addition, referring to Figure 2The base 1 is also provided with a monitoring probe 51 electrically connected to the battery box 2 through a wire. The monitoring probe 51 can monitor the surroundings of the measuring device. The monitoring picture is transmitted to a remote terminal through wireless transmission, thereby preventing the measuring device from being stolen by illegal persons.

[0040] Embodiment 2: Please refer to Figure 6 and Embodiment 2: Please refer to Figure 7 The embodiment is further illustrated based on Embodiment 1. The difference is that a heat dissipation unit 12 is additionally provided to effectively dissipate heat from the battery box 2 and the data transceiver box 3.

[0041] Specifically, the heat dissipation unit 12 comprises an air suction cylinder 30, a piston block 31, a piston rod 32, a transmission plate 33, a second crank 34 and a sliding pin 35. One end of the air suction cylinder 30 is fixed with an L-shaped plate 36. The air suction cylinder 30 is fixed to the square plate 4 through the L-shaped plate 36. The piston block 31 is slidably connected inside the air suction cylinder 30. One end of the piston rod 32 is fixed to the piston block 31. The piston rod 32 and the air suction cylinder 30 are slidably connected. The other end of the piston rod 32 is fixed to the middle part of the transmission plate 33. The transmission plate 33 is slidably sleeved with the sliding pin 35. The bottom of the sliding pin 35 is fixed to one end of the second crank 34. Two air inlet pipes 37 are provided on the two sides of the air suction cylinder 30 through one-way valves. One end of one of the air inlet pipes 37 away from the air suction cylinder 30 is in communication with the inside of the battery box 2. One end of the other air inlet pipe 37 away from the air suction cylinder 30 is in communication with the inside of the data transceiver box 3. An air outlet pipe 38 is provided on the end of the air suction cylinder 30 away from the piston rod 32 through a one-way valve. The output end of the transmission member 29 is in transmission connection with the second crank 34.

[0042] In addition, the transmission member 29 comprises a third gear 39 fixed to the bottom of the second crank 34. The middle shaft of the third gear 39 is in rotary connection with the square plate 4 through a bearing. The third gear 39 is in meshing connection with a second gear 40. The second gear 40 is fixedly sleeved with the third rotating shaft 26.

[0043] Specifically, the third rotating shaft 26 also drives the second gear 40 to rotate. The second gear 40 drives the third gear 39 to rotate. The third gear 39 drives the second crank to rotate. The second crank drives the transmission plate 33 to move left and right, thereby driving the piston rod 32 to move left and right reciprocally. The piston block 31 moves left and right reciprocally in the air suction cylinder 30. The hot air flow in the battery box 2 and the data transceiver box 3 is sucked into the air suction cylinder 30 through the air inlet pipe 37, thereby reducing the hot air flow in the battery box 2 and the data transceiver box 3. The battery box 2 and the data transceiver box 3 are indirectly and synchronously cooled.

[0044] Embodiment three: please refer to Figure 3 and Figure 8 The embodiment is further illustrated for other embodiments, the difference lies in that the fixing member 8 is additionally arranged to effectively fix the laser ranging probe 9.

[0045] Specifically, the fixing member 8 comprises a bidirectional stud 41, a limiting block 42, a moving block 43, a connecting plate 44 and a clamping block 45, the bidirectional stud 41 is rotatably connected with the limiting block 42, one end of the limiting block 42 is fixedly connected with the connecting block 7, the moving block 43 is threadedly connected with the bidirectional stud 41, the moving block 43 is fixedly connected with the clamping block 45 through the connecting plate 44, the connecting block 7 is fixed with a limiting column 46 on the upper side and the lower side, the connecting plate 44 is slidably sleeved with the limiting column 46, one end of the bidirectional stud 41 is fixed with a bolt head 47, in use, the bolt head 47 is manually rotated to drive the bidirectional stud 41 to rotate, the bidirectional stud 41 drives the two moving blocks 43 to move, and then drives the two clamping blocks 45 to move close to each other, the two clamping blocks 45 clamp the laser ranging probe 9, thereby improving the stability of the connection between the laser ranging probe 9 and the telescopic frame 6, and preventing shaking during swinging.

[0046] It should be noted that the relational terms herein such as first and second, and the like, are used solely to distinguish one from another entity or action, without necessarily requiring or implying any such actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0047] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A mechanical device for measuring multi-point displacement of surrounding rock in a tunnel, comprising: A base (1), a battery box (2) and a data transceiver box (3), wherein a square plate (4) is fixed to the bottom of the battery box (2), and the square plate (4) and the base (1) are fixedly connected via a connecting column; It is characterized by further comprising: Four mounting plates (5) are fixed to the bottom of the square plate (4) and are distributed in a circular array. A telescopic frame (6) is provided below the bottom of the mounting plate (5). A connecting block (7) is fixed to the middle of one end of the telescopic frame (6). A fixing member (8) is installed on the connecting block (7). The connecting block (7) is detachably connected to a laser ranging probe (9) via the fixing member (8); and A swing unit (10) is mounted on the bottom of the mounting plate (5), the output end of the swing unit (10) being fixed to the end of the telescopic frame (6), a synchronization unit (11) being mounted at the middle position of the bottom of the square plate (4), and a heat dissipation unit (12) being provided between the battery box (2) and the data transceiver box (3).

2. The multi-point displacement mechanical measuring device for tunnel surrounding rock according to claim 1, characterized in that: The swing unit (10) includes a worm (13), a worm wheel (14), a first rotating shaft (15), a rotating wheel (16), a connecting rod (17), a first crank (18) and a second rotating shaft (19), wherein the worm (13) and the worm wheel (14) are meshed and connected, and both sides of the worm (13) are rotatably connected to the mounting plate (5) through a bearing seat, and the first rotating shaft (15) and the worm wheel (14) are fixedly sleeved, and both sides of the first rotating shaft (15) are rotatably connected to the mounting plate (5) through bearings, and the rotating wheel (16) is fixed on both sides of the first rotating shaft (15). The connecting rod (17) is rotatably connected to one side of the rotating wheel (16) at a position close to the edge. The first crank (18) is rotatably connected to the end of the connecting rod (17) away from the rotating wheel (16). The end of the first crank (18) away from the connecting rod (17) is rotatably connected to the second rotating shaft (19). One end of the second rotating shaft (19) is fixedly connected to the end of the telescopic frame (6). The second rotating shaft (19) is rotatably connected to the mounting plate (5) through a bearing seat. The output end of the synchronization unit (11) is transmission-connected to the worm (13).

3. The multi-point displacement mechanical measuring device for tunnel surrounding rock according to claim 2, characterized in that: The synchronization unit (11) includes a slewing bearing (20), an end face gear ring (21) and a number one gear (22), wherein the slewing bearing (20) is fixed to the bottom of the square plate (4), the end face gear ring (21) is rotatably connected to the outside of the slewing bearing (20), the number one gear (22) and the end face gear ring (21) are meshed and connected, and the number of the number one gears (22) is four, one end of the worm (13) is fixedly connected to the number one gear (22), and a driving member (23) is fixedly mounted on one of the mounting plates (5).

4. The multi-point displacement mechanical measuring device for tunnel surrounding rock according to claim 3, characterized in that: The driving member (23) includes a driving motor (24), a bracket (25) is fixed to the outside of the driving motor (24), one end of the bracket (25) is fixedly connected to the mounting plate (5), a third rotating shaft (26) is fixed to the output end of the driving motor (24), the third rotating shaft (26) is rotationally connected to the mounting plate (5), an active bevel gear (27) is fixed to the bottom end of the third rotating shaft (26), the active bevel gear (27) is meshedly connected to a passive bevel gear (28), the passive bevel gear (28) is fixedly connected to one end of one of the worm gears (13), and a transmission member (29) is transmission-connected between the third rotating shaft (26) and the heat dissipation unit (12).

5. The multi-point displacement mechanical measuring device for tunnel surrounding rock according to claim 4, characterized in that: The heat dissipation unit (12) comprises a vacuum cylinder (30), a piston block (31), a piston rod (32), a transmission plate (33), a second crank (34) and a sliding pin (35). An L-shaped plate (36) is fixed to one end of the vacuum cylinder (30). The vacuum cylinder (30) is fixed to the square plate (4) via the L-shaped plate (36). The piston block (31) is slidably connected to the inside of the vacuum cylinder (30). One end of the piston rod (32) is fixed to the piston block (31). The piston rod (32) and the vacuum cylinder (30) are slidably connected. The other end of the piston rod (32) is fixed to the middle of the transmission plate (33). The transmission plate ( 33) is slidably sleeved with the sliding pin (35), the bottom of the sliding pin (35) is fixed to one end of the second crank (34), and both sides of the vacuum cylinder (30) are equipped with air intake pipes (37) through a one-way valve, one end of the air intake pipe (37) away from the vacuum cylinder (30) is connected to the interior of the battery box (2), and the other end of the air intake pipe (37) away from the vacuum cylinder (30) is connected to the interior of the data transceiver box (3), and the end of the vacuum cylinder (30) away from the piston rod (32) is equipped with an air outlet pipe (38) through a one-way valve, and the output end of the transmission member (29) is transmission-connected to the second crank (34).

6. The multi-point displacement mechanical measuring device for tunnel surrounding rock according to claim 5, characterized in that: The transmission member (29) includes a third gear (39) fixed to the bottom of the second crank (34), the center axis of the third gear (39) is rotatably connected to the square plate (4) via a bearing, the third gear (39) is meshedly connected to the second gear (40), and the second gear (40) is fixedly sleeved to the third rotating shaft (26).

7. The multi-point displacement mechanical measuring device for tunnel surrounding rock according to claim 1, characterized in that: The fixing member (8) includes a bidirectional stud (41), a limiting block (42), a moving block (43), a connecting plate (44) and a clamping block (45), wherein the bidirectional stud (41) is rotatably connected to the limiting block (42) via a bearing, one end of the limiting block (42) is fixedly connected to the connecting block (7), the moving block (43) is threadedly connected to the bidirectional stud (41), the moving block (43) is fixedly connected to the clamping block (45) via the connecting plate (44), limiting columns (46) are fixed on the upper and lower sides of the connecting block (7), the connecting plate (44) is slidably sleeved with the limiting columns (46), and a bolt head (47) is fixed to one end of the bidirectional stud (41).

8. The multi-point displacement mechanical measuring device for tunnel surrounding rock according to claim 1, characterized in that: A connecting platform (48) is fixed to the bottom of the square plate (4), and three anchor rods (49) are fixed to the bottom of the connecting platform (48).

9. The multi-point displacement mechanical measuring device for tunnel surrounding rock according to claim 1, characterized in that: A data transceiver antenna (50) is installed on the base (1), and the data transceiver antenna (50) is electrically connected to the data transceiver box (3) via a data line.

10. The tunnel surrounding rock multi-point displacement mechanical measuring device according to claim 9, characterized in that: A monitoring probe (51) is also installed on the base (1), and the monitoring probe (51) is electrically connected to the battery box (2) via an electric wire.

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