Tunnel lining deformation monitoring device

Abstract

The utility model relates to the technical field of tunnel engineering, in particular to a tunnel lining deformation monitoring device which comprises a base, a lifting table is arranged on the base, the middle portion, the left side and the right side of the top face of the lifting table are each provided with a set of fixing blocks, the left side and the right side of the lifting table are each provided with a set of first clamping grooves, and sliding blocks are arranged in the first clamping grooves in a sliding mode. A mounting cavity is formed in the lifting table, a motor is fixedly arranged in the mounting cavity, an output shaft of the motor is fixedly connected with the first bevel gear, a screw is rotationally arranged in the mounting cavity, a first threaded hole matched with the threaded section is formed in the sliding block, and a second bevel gear meshed with the first bevel gear is fixedly arranged in the middle of the screw. According to the device, a first bevel gear is driven by a motor to rotate, then two sets of sliding blocks are driven to slide away from each other along a screw rod through meshing of the first bevel gear and a second bevel gear, then position adjustment of a contact plate at the top of the sliding blocks is achieved, flexible adjustment of a contact point of the contact plate and a tunnel lining is achieved, and the monitoring range is widened.

Description

Technical Field

[0001] The present application relates to the technical field of tunnel engineering, and in particular to a tunnel lining deformation monitoring device. Background Art

[0002] Tunnel engineering is a building constructed underground, underwater or in a mountain to lay railways or build roads for motor vehicles to pass through. During the construction process, deformation monitoring devices are required to monitor the shape of the tunnel lining to prevent failure to monitor tunnel deformation in time and cause tunnel collapse.

[0003] A Chinese utility model patent with publication number CN219511516U discloses a tunnel section deformation monitoring device, including a bottom plate, a connecting plate is provided above the bottom plate, a first pressure detection plate is provided above the connecting plate, and two second pressure detection plates are provided above the connecting plate. The utility model motor drives the outer gear ring to rotate through the gear, the outer gear ring drives the screw to move upward through the circular tube, the screw drives the support block to move through the cross plate, the support block drives the first pressure detection plate and the second pressure detection plate to move upward through the connecting plate to contact the top of the tunnel, the gravity sensor detects the pressure and sends the information to the signal receiver, the signal receiver sends the information to the alarm horn, the alarm horn sounds, the staff hears the alarm, and goes to the site for observation and maintenance, adopts a mobile adjustment structure, meets the rapid deployment requirements during emergency disposal and can effectively expand the monitoring range, and has a good use effect.

[0004] The device is provided with a connecting plate, and a first pressure sensing plate and a second pressure sensing plate are provided above the connecting plate. When deformation monitoring operation is performed on the tunnel, the gear is driven to rotate by a motor, thereby driving the connecting plate to rise so that the first pressure sensing plate and the second pressure sensing plate come into contact with the top of the tunnel, and then the pressure is detected by a gravity sensor to monitor the deformation of the tunnel. However, the positions of the first pressure sensing plate and the second pressure sensing plate are fixed, and only fixed-point contact monitoring can be performed on the top of the tunnel during monitoring, which makes it inconvenient to adjust the position along the curved contour of the tunnel, and the monitoring range is small, and the scope of application is not high. Utility Model Content

[0005] In view of the problem of small monitoring range in the prior art, the utility model provides a tunnel lining deformation monitoring device.

[0006] To this end, the specific technical solutions adopted by the utility model are as follows:

[0007] The utility model provides a tunnel lining deformation monitoring device.

[0008] A base, a lifting platform is arranged on the base, a group of fixed blocks are respectively arranged in the middle part and left and right sides of the top surface of the lifting platform, a column is fixedly arranged on the top of the fixed block, a countersunk hole is arranged on the column, a plug rod 1 is inserted in the countersunk hole, a distance sensor is fixedly arranged at the bottom of the countersunk hole, a contact plate is arranged on the top of the plug rod 1, a group of card slots 1 are arranged on the left and right sides of the lifting platform, a slider is arranged in the card slot 1 for sliding, the fixed blocks on the left and right sides of the lifting platform are respectively fixedly connected with a group of sliders, an installation cavity is arranged in the lifting platform, a motor is fixedly arranged in the installation cavity, the output shaft of the motor is connected and fixed with a bevel gear 1, a screw is rotatably arranged in the installation cavity, two ends of the screw are respectively located in a group of card slots 1, two ends of the screw are provided with threaded sections in opposite directions, a threaded hole 1 matched with the threaded section is arranged on the slider, and a bevel gear 2 meshing with the bevel gear 1 is fixedly arranged in the middle of the screw;

[0009] An adjustment mechanism is arranged on the first insertion rod;

[0010] The rotating mechanism is arranged on the first insertion rod.

[0011] Preferably, the adjustment mechanism includes a ring and a spring, a threaded section is provided at the bottom of the first plug rod, the ring is sleeved on the first plug rod and has a threaded hole 2 on the inner side thereof for matching with the threaded section, the spring is sleeved on the first plug rod below the ring, and both ends of the spring are respectively in contact with the ring and the column. The staff rotates the ring to change the length of the threaded section below the ring, and then supports the ring through the spring to adjust the height of the contact plate, thereby ensuring effective contact of the contact plate with different height monitoring points of the tunnel lining.

[0012] Preferably, the rotating mechanism includes a second plug rod, a gear and a fixed plate, a second slot is provided on the top of the first plug rod, the second plug rod passes through the second slot and penetrates the first plug rod, a gear is fixedly provided in the second slot of the second plug rod, a groove adapted to the gear is provided on one side of the second slot, one end of the fixed plate is fixedly provided on the inner side of the contact plate, and the other end of the fixed plate is inserted in the second slot, and a tooth groove matched with the gear is provided on one end of the fixed plate in the second slot. The staff can move the second plug rod to make the gear on the second plug rod move into the groove and disengage from the tooth groove on the fixed plate, and then the staff can rotate the contact plate and the fixed plate along the second plug rod to adapt to the curvature of the point to be monitored. After the rotation is completed, the second plug rod is moved to make the gear resume the engagement with the tooth groove, thereby realizing the limitation of the contact plate and ensuring the monitoring accuracy.

[0013] Preferably, the insertion rod 1 is provided with a clamping groove 3 along the axial direction at the threaded section, and a protrusion matched with the clamping groove 3 is fixedly provided on the inner wall of the countersunk hole. The clamping groove 3 is provided to limit the insertion rod 1 to prevent the insertion rod 1 from rotating circumferentially.

[0014] Preferably, the base is provided with a mounting groove, in which an electric push rod is fixedly arranged, the output shaft of the electric push rod is fixedly connected to the bottom of the lifting platform, a limit rod is also fixedly arranged at the bottom of the lifting platform, and a limit hole matched with the limit rod is provided on the base. By starting the electric push rod, the lifting platform can be driven to perform lifting operations along the base, which is convenient to operate. The limit rod limits the lifting and lowering of the lifting platform to ensure the stability of the lifting and lowering of the lifting platform.

[0015] Preferably, a group of clamping blocks are fixedly provided on both sides of the slider, and a clamping slot four matched with the clamping block is provided on one side wall of the clamping slot. The clamping block is provided to limit the slider and ensure the stability of the sliding movement.

[0016] Preferably, the contact plate is arc-shaped, and the arc-shaped contact plate ensures complete contact with the tunnel lining.

[0017] The advantages of adopting the above technical solution are:

[0018] The utility model is provided with a base, and a lifting platform is provided on the base, and a group of fixing blocks are respectively provided in the middle and left and right sides of the top surface of the lifting platform, and a column is fixedly provided on the top of the fixing block, and a group of card slots are provided on the left and right sides of the lifting platform, and a slider is provided for sliding in the card slot, and an installation cavity is provided in the lifting platform, and a motor is fixedly provided in the installation cavity, and the motor output shaft is connected and fixed with a bevel gear, and a screw is rotatably provided in the installation cavity, and both ends of the screw are respectively located in a group of card slots, and both ends of the screw are provided with threaded sections in opposite directions, and a threaded hole 1 matched with the threaded section is provided on the slider, and a bevel gear 2 meshing with the bevel gear 1 is fixedly provided in the middle of the screw. In this device, the bevel gear 1 is driven to rotate by the motor, and then the meshing of the bevel gear 1 and the bevel gear 2 drives the two groups of sliders to slide away from each other along the screw, thereby realizing the position adjustment of the contact plate on the top of the slider, realizing the flexible adjustment of the contact point between the contact plate and the tunnel lining, and improving the monitoring range. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 The structure diagram of the utility model is shown;

[0021] Figure 2 A partial cross-sectional view of the utility model is shown;

[0022] Figure 3 A partial cross-sectional view of the utility model is shown;

[0023] Figure 4 A partial cross-sectional view of the present invention is shown.

[0024] Among them: base 1, lifting platform 2, slot one 201, slot four 202, limit rod 203, fixed block 3, slider 301, block 302, column 4, plug rod one 5, ring 501, spring 502, slot three 503, slot two 504, plug rod two 505, gear 506, contact plate 6, fixed plate 601, tooth groove 602, motor 7, bevel gear one 701, bevel gear two 702, screw 8, electric push rod 9. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0026] like Figures 1 to 4 As shown, the embodiment of the utility model discloses a tunnel lining deformation monitoring device, including a base 1, an adjustment mechanism and a rotation mechanism

[0027] Base 1, a lifting platform 2 is arranged on the base 1, a group of fixed blocks 3 are respectively arranged in the middle and left and right sides of the top surface of the lifting platform 2, a column 4 is fixedly arranged on the top of the fixed block 3, a countersunk hole is arranged on the column 4, a plug rod 5 is inserted in the countersunk hole, a distance sensor is fixedly arranged at the bottom of the countersunk hole, and a contact plate 6 is arranged on the top of the plug rod 5, a group of card slots 201 are respectively arranged on the left and right sides of the lifting platform 2, a slider 301 is slidably arranged in the card slot 201, and the fixed blocks 3 on the left and right sides of the lifting platform 2 are respectively fixed with a group of sliders 301 A fixed connection is provided in the lifting platform 2, in which a motor 7 is fixedly arranged, and an output shaft of the motor 7 is fixedly connected to a bevel gear 701, and a screw 8 is rotatably arranged in the mounting cavity. Both ends of the screw 8 are respectively located in a group of slots 201, and both ends of the screw 8 are provided with threaded sections in opposite directions, and a threaded hole 1 matched with the threaded section is provided on the slider 301, and a bevel gear 2 702 meshing with the bevel gear 701 is fixedly arranged in the middle of the screw 8, the adjusting mechanism is arranged on the plug rod 5, and the rotating mechanism is arranged on the plug rod 5.

[0028] In at least one embodiment, the adjustment mechanism includes a collar 501 and a spring 502. A threaded section is provided at the bottom of the plug rod 5. The collar 501 is sleeved on the plug rod 5 and a threaded hole 2 is provided on the inner side thereof to match the threaded section. The spring 502 is sleeved on the plug rod 5 below the collar 501. The two ends of the spring 502 are respectively in contact with the collar 501 and the column 4. The staff rotates the collar 501 to change the length of the threaded section below the collar 501. Then, the spring 502 supports the collar 501 to adjust the height of the contact plate 6 to ensure that the contact plate 6 effectively contacts the monitoring points of different heights of the tunnel lining.

[0029] In at least one embodiment, the rotating mechanism includes a second plug rod 505, a gear 506 and a fixed plate 601. A second slot 504 is provided on the top of the plug rod 5. The second plug rod 505 passes through the second slot 504 and penetrates the plug rod 5. The second plug rod 505 is fixedly provided with a gear 506 in the second slot 504. A groove adapted to the gear 506 is provided on one side of the second slot 504. One end of the fixed plate 601 is fixedly provided on the inner side of the contact plate 6. The other end of the fixed plate 601 is inserted into the second slot 504. The fixed plate 601 is fixedly provided on the second slot 504. 4 is provided with a tooth groove 602 matched with the gear 506. The staff can move the second plug rod 505 to make the gear 506 on the second plug rod 505 move into the groove and disengage from the tooth groove 602 on the fixed plate 601. Then the staff can rotate the contact plate 6 and the fixed plate 601 along the second plug rod 505 to adapt them to the curvature of the point to be monitored. After the rotation is completed, the second plug rod 505 is moved to make the gear 506 resume the engagement with the tooth groove 602, so as to limit the contact plate 6 and ensure the monitoring accuracy.

[0030] In at least one embodiment, the insertion rod 5 is provided with a retaining groove 3 503 along the axial direction at the threaded section, and a protrusion matched with the retaining groove 3 503 is fixedly provided on the inner wall of the countersunk hole. The retaining groove 3 503 is provided to limit the insertion rod 5 to prevent the insertion rod 5 from rotating in the circumferential direction.

[0031] In at least one embodiment, a mounting groove is provided on the base 1, and an electric push rod 9 is fixedly arranged in the mounting groove. The output shaft of the electric push rod 9 is fixedly connected to the bottom of the lifting platform 2. A limiting rod 203 is also fixedly arranged at the bottom of the lifting platform 2. A limiting hole matched with the limiting rod 203 is provided on the base 1. By starting the electric push rod 9, the lifting platform 2 can be driven to be lifted and lowered along the base 1. The operation is convenient. The limiting rod 203 limits the lifting and lowering of the lifting platform 2 to ensure the stability of the lifting and lowering of the lifting platform 2.

[0032] In at least one embodiment, a group of blocks 302 are fixedly provided on both sides of the slider 301, and the side wall of the slot 1 201 is provided with a slot 4 202 matched with the block 302. By setting the block 302, the slider 301 is limited to ensure the stability of the sliding movement.

[0033] In at least one embodiment, the contact plate 6 is arc-shaped, and the arc-shaped contact plate 6 ensures full contact with the tunnel lining.

[0034] When performing deformation monitoring on the tunnel lining, the staff moves the base 1 to the bottom of the point to be monitored, and then starts the motor 7. The motor 7 drives the bevel gear 1 701 to rotate, and the bevel gear 1 701 drives the screw 8 to rotate by meshing with the bevel gear 2 702. The opposite threaded sections at both ends of the screw 8 make the sliders 301 on both sides drive the fixed blocks 3 to move away from each other along the axial direction of the screw 8, so that the contact plates 6 on both sides are moved to just below the point to be detected, and then the lifting platform 2 is lifted and lowered along the base 1, so that the lifting platform 2 drives the upper contact plate 6 to rise, so that the contact plate 6 on the fixed block 3 in the middle of the lifting platform 2 contacts the top of the tunnel, and the contact plates 6 on both sides contact the sides of the tunnel, and the staff can adjust the contact plates on both sides according to monitoring needs. The position of plate 6 increases the monitoring range. When the tunnel lining is deformed, it will drive the contact plate 6 and the plug rod 5 to slide axially along the column 4, and the distance sensor in the countersunk hole on the column 4 monitors the distance between the bottom of the plug rod 5 and the distance sensor in real time. A control unit is arranged on the base 1. The distance sensor transmits the monitoring data to the control unit. The staff can check the deformation status of the tunnel lining in real time through the control unit. The operation is convenient, and the length of the protruding end of the plug rod 5 relative to the countersunk hole can be adjusted by the adjustment mechanism to ensure that sufficient space is reserved in the countersunk holes on the columns 4 on both sides during monitoring to ensure accurate monitoring, and the contact plate 6 can be rotated by the rotating mechanism to enable it to fully adapt to the curvature of the tunnel lining monitoring point to ensure accurate monitoring.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A tunnel lining deformation monitoring device, characterized in that: include A base, a lifting platform is arranged on the base, a group of fixed blocks are respectively arranged in the middle part and left and right sides of the top surface of the lifting platform, a column is fixedly arranged on the top of the fixed block, a countersunk hole is arranged on the column, a plug rod 1 is inserted in the countersunk hole, a distance sensor is fixedly arranged at the bottom of the countersunk hole, a contact plate is arranged on the top of the plug rod 1, a group of card slots 1 are arranged on the left and right sides of the lifting platform, a slider is arranged in the card slot 1 for sliding, the fixed blocks on the left and right sides of the lifting platform are respectively fixedly connected with a group of sliders, an installation cavity is arranged in the lifting platform, a motor is fixedly arranged in the installation cavity, the output shaft of the motor is connected and fixed with a bevel gear 1, a screw is rotatably arranged in the installation cavity, two ends of the screw are respectively located in a group of card slots 1, two ends of the screw are provided with threaded sections in opposite directions, a threaded hole 1 matched with the threaded section is arranged on the slider, and a bevel gear 2 meshing with the bevel gear 1 is fixedly arranged in the middle of the screw; An adjustment mechanism is arranged on the first insertion rod; The rotating mechanism is arranged on the first insertion rod.

2. A tunnel lining deformation monitoring device according to claim 1, characterized in that: The adjustment mechanism includes a ring and a spring. A threaded section is provided at the bottom of the first plug rod. The ring is sleeved on the first plug rod and has a threaded hole 2 on the inner side that matches the threaded section. The spring is sleeved on the first plug rod below the ring, and both ends of the spring are respectively in contact with the ring and the column.

3. A tunnel lining deformation monitoring device according to claim 1, characterized in that: The rotating mechanism includes an insertion rod, a gear and a fixed plate. A second slot is provided on the top of the insertion rod. The insertion rod passes through the second slot and penetrates the insertion rod. A gear is fixedly arranged in the second slot of the insertion rod. A groove adapted to the gear is provided on one side of the second slot. One end of the fixed plate is fixedly arranged on the inner side of the contact plate, and the other end of the fixed plate is inserted in the second slot. One end of the fixed plate in the second slot is provided with a tooth groove matched with the gear.

4. A tunnel lining deformation monitoring device according to claim 2, characterized in that: The insert rod 1 is provided with a clamping groove 3 along the axial direction at the threaded section, and a protrusion matched with the clamping groove 3 is fixedly provided on the inner wall of the countersunk hole.

5. The tunnel lining deformation monitoring device according to claim 1, characterized in that: The base is provided with a mounting groove, in which an electric push rod is fixedly arranged, and the output shaft of the electric push rod is fixedly connected to the bottom of the lifting platform. A limit rod is also fixedly arranged at the bottom of the lifting platform, and the base is provided with a limit hole matched with the limit rod.

6. A tunnel lining deformation monitoring device according to claim 1, characterized in that: A group of clamping blocks are fixedly arranged on both sides of the slide block, and a clamping slot four matched with the clamping blocks is arranged on one side wall of the clamping slot.

7. The tunnel lining deformation monitoring device according to claim 1, characterized in that: The contact plate is arc-shaped.

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