Device for tunnel deformation measurement

Abstract

A device for tunnel deformation measurement disclosed by the present invention comprises a measurement mechanism, the measurement mechanism comprises an arc-shaped bearing plate, the outer side of the arc-shaped bearing plate is slidably connected with an arc-shaped limiting sleeve, and the upper end and the lower end of one end of the arc-shaped limiting sleeve are fixedly connected with fixing blocks. And one end of a fixing block fixed to the middle of the top end of the arc-shaped limiting sleeve is rotationally connected with a third gear disc, one end of a fixing block fixed to the middle of the bottom end of the arc-shaped limiting sleeve is rotationally connected with a sixth gear disc, and the middle of one end of the arc-shaped limiting sleeve is rotationally connected with a driving gear. The beneficial effects are that the distance between the measuring instrument and the tunnel ground can be conveniently adjusted according to needs in the measuring process, the tunnel measuring accuracy can be improved, the section and distance measurement can be conveniently and synchronously measured, the measuring efficiency can be improved, the measuring instrument can be automatically driven to slowly move in the tunnel measuring process, and the measuring efficiency can be improved. The measuring efficiency of the measuring instrument is improved, and manpower is saved.

Description

Technical Field

[0001] The present invention relates to the technical field of tunnel deformation measurement, and specifically relates to a device for tunnel deformation measurement. Background Art

[0002] A tunnel deformation measurement device is a device used to monitor and measure the deformation of a tunnel structure during construction or after being put into use. Most of the existing tunnel deformation measurement devices are fixed at designated positions on the tunnel wall, and the laser emitted by the device is used to measure the tunnel. Since the device is fixed to the tunnel wall, when the height of the device needs to be adjusted, it is necessary to manually disassemble and reinstall the device, making it inconvenient to adjust the height as needed during tunnel measurement, thus affecting the measurement accuracy. The existing tunnel deformation measurement devices require manual assistance to change the position of the measuring instrument during the measurement process, making the measurement process more labor-consuming. Summary of the Invention

[0003] To solve the above technical problems, a device for tunnel deformation measurement is provided. This technical solution solves the problems raised in the above background art that most of the existing tunnel deformation measurement devices are fixed at designated positions on the tunnel wall, and the laser emitted by the device is used to measure the tunnel. Since the device is fixed to the tunnel wall, when the height of the device needs to be adjusted, it is necessary to manually disassemble and reinstall the device, making it inconvenient to adjust the height as needed during tunnel measurement, thus affecting the measurement accuracy. The existing tunnel deformation measurement devices require manual assistance to change the position of the measuring instrument during the measurement process, making the measurement process more labor-consuming.

[0004] To achieve the above object, the technical solution adopted by the present invention is as follows: A device for tunnel deformation measurement, including a measurement mechanism. The measurement mechanism includes an arc-shaped bearing plate. An arc-shaped limiting sleeve is slidably connected to the outside of the arc-shaped bearing plate. One end of the arc-shaped limiting sleeve is fixedly connected with a fixing block at both the upper and lower ends. One end of the fixing block fixed in the middle of the top of the arc-shaped limiting sleeve is rotatably connected with a third gear disk. One end of the fixing block fixed in the middle of the bottom of the arc-shaped limiting sleeve is rotatably connected with a sixth gear disk. One end of the arc-shaped limiting sleeve is rotatably connected with a driving gear. The driving gear is located between the third gear disk and the sixth gear disk and is meshed with the third gear disk and the sixth gear disk. One end of the third gear disk above the middle and one end of the sixth gear disk above the middle are both fixedly connected with a positioning rod. One end of the driving gear is provided with a lifting plate. The top of the lifting plate is rotatably connected with the positioning rod fixed above one end of the third gear disk. The bottom of the lifting plate is rotatably connected with the positioning rod fixed above one end of the sixth gear disk. One end of the lifting plate is slidably connected with a protective drainage ring up and down.

[0005] Preferably, a lifting limit cavity is formed in the middle of the other end of the protective drainage ring. The lifting plate is slidably connected to the lifting limit cavity. A mounting plate is fixedly connected to the lower part of one end of the lifting plate. A turntable is rotatably connected to the middle of the top of the mounting plate. A laser measuring head is fixedly connected to the top of the turntable. A limit column sleeve is fixedly connected to the top of the laser measuring head. A pressing plate is slidably connected to the inner side of the limit column sleeve. The top of the pressing plate is fixedly connected to the inner wall of the top end of the inner side of the protective drainage ring. An auxiliary spring is arranged above the outer side of the pressing plate. A pressure sensing block is arranged below the pressing plate.

[0006] Preferably, the other end of the arc-shaped limit sleeve is detachably connected with an arc-shaped clamping plate through a nut. An arc-shaped guiding cavity is formed in the inner side of the arc-shaped bearing plate. The column rod fixed to the middle of one end of the driving gear penetrates through the middle of the arc-shaped limit sleeve and the arc-shaped guiding cavity. The other end of the fixed block fixedly connected to the top end of the arc-shaped limit sleeve is rotatably connected with a first gear disc. The other end of the fixed block fixedly connected to the bottom end of the arc-shaped limit sleeve is rotatably connected with a fifth gear disc. An arc-shaped slot is formed in the middle of the upper and lower surfaces of the arc-shaped limit sleeve. The bottom of the first gear disc penetrates through the arc-shaped slot formed in the upper surface of the arc-shaped limit sleeve. The top of the fifth gear disc penetrates through the arc-shaped slot formed in the lower surface of the arc-shaped limit sleeve.

[0007] Preferably, a second motor is fixedly connected to the middle of the other end of the arc-shaped clamping plate. The output end of the second motor is fixedly connected to the column rod fixed to the middle of one end of the driving gear. The other end of the arc-shaped clamping plate is fixedly connected with a first support plate. A second gear disc is rotatably connected above the other end of the first support plate. A fourth gear disc is rotatably connected below the other end of the first support plate. The second gear disc and the fourth gear disc are meshed with each other. A hoop plate is fixedly connected to the middle of one side of the first support plate. A first motor is fixedly connected to the top of the hoop plate. The output end of the first motor is fixedly connected to the middle of one end of the second gear disc.

[0008] Preferably, a guide rail mechanism is arranged at the bottom of the arc-shaped bearing plate. The guide rail mechanism includes sliders. One slider is fixedly connected to the front and rear sides of the bottom of the arc-shaped bearing plate. A guide pulley is rotatably connected to the middle of the bottom end of the slider. A moving track is arranged in the middle of one side of the slider. A limit cavity is formed in the middle of one side of the moving track. Three guide sliding rods are fixedly arranged at equal intervals inside the limit cavity. The guide sliding rods penetrate through one side of the slider.

[0009] Preferably, a first connecting rod is fixedly connected between the middle of one end of the first gear disc and the middle of one end of the second gear disc. A second connecting rod is fixedly connected between the middle of one end of the fifth gear disc and the middle of one end of the fourth gear disc.

[0010] Preferably, an arc-shaped positioning cavity is formed inside the arc-shaped limiting sleeve, and the arc-shaped positioning cavity is slidably connected to the arc-shaped bearing plate. A tunnel main body is provided on the outer side of the protective drainage ring. Preferably, the front and rear sides of one end of the first support plate are respectively fixedly connected to the front and rear sides of one end of the arc-shaped clamping plate. The second motor is located in the middle of the cavity between the first support plate and the arc-shaped clamping plate, and the middle of one end of the second motor is fixedly connected to the middle of one end of the first support plate.

[0011] Compared with the prior art, the present invention provides a device for tunnel deformation measurement, which has the following beneficial effects: it is convenient to adjust the distance between the measuring instrument and the tunnel ground according to needs during the measurement process, which is beneficial to improving the accuracy of tunnel measurement; it is convenient to synchronously measure the cross-section and the distance measurement, which is beneficial to improving the measurement efficiency; it is convenient to automatically drive the measuring instrument to move slowly during the tunnel measurement process, which is beneficial to improving the measurement efficiency of the measuring instrument and saving manpower.

[0012] By means of a driving gear, a third gear disc, a sixth gear disc, a positioning rod, a lifting plate, a laser measuring head, a second gear disc, a fourth gear disc, a first gear disc, a fifth gear disc, an arc-shaped limiting sleeve, an arc-shaped bearing plate, a protective drainage ring, a pressing plate, a limiting column sleeve and a pressure sensing block, during distance measurement, the rotating driving gear drives the third gear disc and the sixth gear disc meshed and connected at the upper and lower ends respectively to rotate synchronously. The rotating third gear disc and sixth gear disc drive the position of the positioning rod fixedly connected at one end to change with the rotation of the third gear disc and the sixth gear disc, thereby driving the lifting plate to move up and down with the rotating third gear disc and sixth gear disc, so as to adjust the height of the laser measuring head provided at one end of the lifting plate from the tunnel floor. When the laser measuring head is adjusted to an appropriate height with the rotation of the third gear disc and the sixth gear disc, the light beam emitted by the laser measuring head measures the distance of the tunnel. During distance measurement and cross-section measurement, the rotating second gear disc drives the fourth gear disc meshed and connected at the bottom to rotate synchronously, thereby driving the correspondingly connected first gear disc and fifth gear disc to rotate synchronously. The rotating first gear disc and fifth gear disc roll along the outer surface of the arc-shaped bearing plate engaged and connected under the limitation of the arc-shaped limiting sleeve, thereby driving the arc-shaped limiting sleeve to slide to one side along the arc-shaped bearing plate, thereby driving the third gear disc, the sixth gear disc, the lifting plate and the protective drainage ring slidably connected to the outer side of one end of the lifting plate at one end of the arc-shaped limiting sleeve to slowly move from one side inside the tunnel to the other side inside the tunnel. During this process, the upper surface of the protective drainage ring always contacts the tunnel wall. When the protective drainage ring moves to the position where the cross-section of the tunnel wall is deformed, the deformed position will push the protective drainage ring to move down along the limiting column sleeve under the limitation of the pressing plate fixedly connected to the upper inner side. During the downward movement of the pressing plate, the top end of the inner side of the protective drainage ring connected thereto will squeeze the auxiliary spring provided above the limiting column sleeve, so that the bottom of the pressing plate can be slowly and stably stuck to the pressure sensing block. The pressure sensing block transmits the magnitude of the sensed pressure to the data analysis module provided inside the laser measuring head. The data analysis module obtains the magnitude of the deformation of the main cross-section of the tunnel according to the magnitude of the sensed pressure, which facilitates adjusting the distance between the measuring instrument and the tunnel floor as needed during the measurement process, is beneficial to improving the accuracy of tunnel measurement, facilitates synchronous measurement of the cross-section and distance measurement, and is beneficial to improving the measurement efficiency.

[0013] By means of the provided guiding pulleys, sliders, arc-shaped bearing plates, guiding slide bars, moving tracks and limiting cavities, during cross-section detection and ranging, the guiding pulleys drive the arc-shaped bearing plates fixedly connected to the tops of the sliders through the sliders arranged above to move towards one end. During the process of the arc-shaped bearing plates moving towards one end, the middle part on one side of the sliders will slide intermittently and slowly towards one end along the limiting cavities opened on one side of the moving tracks under the restriction of the guiding slide bars, thereby driving the measuring mechanism arranged on the arc-shaped bearing plates to move slowly towards one end. This facilitates automatically driving the measuring instrument to move slowly during tunnel measurement, which is beneficial to improving the measurement efficiency of the measuring instrument and saving manpower. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 Schematic three-dimensional structure diagram of the front view of the present invention; Figure 2 Schematic left three-dimensional structure diagram of the connection between the arc-shaped bearing plate and the protective drainage ring of the present invention; Figure 3 Schematic left view structure diagram of the present invention; Figure 4 For the present invention Figure 3 Enlarged structure diagram of part A in; Figure 5 Schematic right three-dimensional structure diagram of the connection between the arc-shaped bearing plate and the protective drainage ring of the present invention; Figure 6 Schematic disassembly three-dimensional structure diagram of the protective drainage ring and the arc-shaped bearing plate of the present invention; Figure 7 Schematic front three-dimensional structure diagram of the connection between the protective drainage ring and the arc-shaped bearing plate of the present invention.

[0015] 1. Tunnel main body; 2. Guide rail mechanism; 21. Moving track; 22. Limiting cavity; 23. Guiding slide bar; 24. Slider; 25. Guiding pulley; 3. Measuring mechanism; 31. Arc-shaped limiting sleeve; 32. Arc-shaped slot; 33. First gear disk; 34. Second gear disk; 35. Third gear disk; 36. Arc-shaped clamping plate; 37. First support plate; 38. Arc-shaped bearing plate; 39. First motor; 310. Fourth gear disk; 311. Arc-shaped guiding cavity; 312. Fifth gear disk; 313. Sixth gear disk; 314. Protective drainage ring; 315. Laser measuring head; 316. Turntable; 317. Mounting plate; 318. Pressure sensing block; 319. Pressing plate; 320. Auxiliary spring; 321. Second motor; 322. Positioning rod; 323. Lifting plate; 324. Bracket plate; 325. Fixed block; 326. Driving gear; 327. Arc-shaped positioning cavity; 328. Limiting column sleeve. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0016] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments in the following description are only examples, and other obvious variations can be conceived by those skilled in the art.

[0017] Example 1 Please refer to Figure 1 - Figure 7As shown in the figure, a device for tunnel deformation measurement includes a measuring mechanism 3. The measuring mechanism 3 includes an arc-shaped bearing plate 38. An arc-shaped limiting sleeve 31 is slidably connected to the outer side of the arc-shaped bearing plate 38. At both the upper and lower ends of one end of the arc-shaped limiting sleeve 31, a fixing block 325 is fixedly connected. One end of the fixing block 325 fixed in the middle of the top end of the arc-shaped limiting sleeve 31 is rotatably connected to a third gear disc 35. One end of the fixing block 325 fixed in the middle of the bottom end of the arc-shaped limiting sleeve 31 is rotatably connected to a sixth gear disc 313. A driving gear 326 is rotatably connected to the middle of one end of the arc-shaped limiting sleeve 31. The driving gear 326 is located between the third gear disc 35 and the sixth gear disc 313 and is meshed with the third gear disc 35 and the sixth gear disc 313. A positioning rod 322 is fixedly connected to the middle of the upper part of one end of the third gear disc 35 and the middle of the upper part of one end of the sixth gear disc 313. A lifting plate 323 is provided at one end of the driving gear 326. The top of the lifting plate 323 is rotatably connected to the positioning rod 322 fixed above one end of the third gear disc 35. The bottom of the lifting plate 323 is rotatably connected to the positioning rod 322 fixed above one end of the sixth gear disc 313. A protective drainage ring 314 is slidably connected to the upper and lower parts of one end of the lifting plate 323. A lifting limiting cavity is formed in the middle of the other end of the protective drainage ring 314. The lifting plate 323 is slidably connected to the lifting limiting cavity. A mounting plate 317 is fixedly connected to the lower part of one end of the lifting plate 323. A turntable 316 is rotatably connected to the middle of the top end of the mounting plate 317. A laser measuring head 315 is fixedly connected to the top of the turntable 316. A limiting column sleeve 328 is fixedly connected to the top of the laser measuring head 315. A pressing plate 319 is slidably connected to the inner side of the limiting column sleeve 328. The top of the pressing plate 319 is fixedly connected to the inner wall of the top end of the protective drainage ring 314. An auxiliary spring 320 is provided above the outer side of the pressing plate 319. A pressure sensing block 318 is provided below the pressing plate 319. The other end of the arc-shaped limiting sleeve 31 is detachably connected with an arc-shaped clamping plate 36 through a nut. An arc-shaped guiding cavity 311 is formed in the inner side of the arc-shaped bearing plate 38. The column rod fixed in the middle of one end of the driving gear 326 penetrates through the middle of the arc-shaped limiting sleeve 31 and the arc-shaped guiding cavity 311. The other end of the fixing block 325 fixedly connected to the top end of the arc-shaped limiting sleeve 31 is rotatably connected to a first gear disc 33. The other end of the fixing block 325 fixedly connected to the bottom end of the arc-shaped limiting sleeve 31 is rotatably connected to a fifth gear disc 312. An arc-shaped slot 32 is formed in the middle of the upper and lower surfaces of the arc-shaped limiting sleeve 31. The bottom of the first gear disc 33 penetrates through the arc-shaped slot 32 formed in the upper surface of the arc-shaped limiting sleeve 31. The top of the fifth gear disc 312 penetrates through the arc-shaped slot 32 formed in the lower surface of the arc-shaped limiting sleeve 31. The middle of the other end of the arc-shaped clamping plate 36 is fixedly connected to a second motor 321. The output end of the second motor 321 is fixedly connected to the column rod fixed in the middle of one end of the driving gear 326. The other end of the arc-shaped clamping plate 36 is fixedly connected to a first support plate 37. A second gear disc 34 is rotatably connected above the other end of the first support plate 37.At the lower part of the other end of the first support plate 37, a fourth gear disk 310 is rotatably connected. The second gear disk 34 is meshed and connected with the fourth gear disk 310. In the middle of one side of the first support plate 37, a hoop plate 324 is fixedly connected. On the top of the hoop plate 324, a first motor 39 is fixedly connected. The output end of the first motor 39 is fixedly connected with the middle part of one end of the second gear disk 34. Between the middle part of one end of the first gear disk 33 and the middle part of one end of the second gear disk 34, a first connecting rod is fixedly connected. Between the middle part of one end of the fifth gear disk 312 and the middle part of one end of the fourth gear disk 310, a second connecting rod is fixedly connected. An arc-shaped positioning cavity 327 is formed inside the arc-shaped limiting sleeve 31. The arc-shaped positioning cavity 327 is slidably connected with the arc-shaped bearing plate 38. The tunnel main body 1 is arranged on the outer side of the protective drainage ring 314. The front and rear sides of one end of the first support plate 37 are respectively fixedly connected with the front and rear sides of one end of the arc-shaped clamping plate 36. The second motor 321 is located in the middle of the cavity between the first support plate 37 and the arc-shaped clamping plate 36. The middle part of one end of the second motor 321 is fixedly connected with the middle part of one end of the first support plate 37.,

[0018] In this embodiment, during distance measurement, the second motor 321 drives the driving gear 326 fixedly connected to the output end to rotate through the column rod. The rotating driving gear 326 drives the third gear disk 35 and the sixth gear disk 313 which are respectively meshed and connected at the upper and lower ends to rotate synchronously. The rotating third gear disk 35 and sixth gear disk 313 drive the position of the positioning rod 322 fixedly connected to one end to change with the rotation of the third gear disk 35 and sixth gear disk 313, thereby driving the lifting plate 323 rotatably connected to one end of the positioning rod 322 to move up and down with the rotation of the third gear disk 35 and sixth gear disk 313, so as to adjust the height of the laser measuring head 315 from the tunnel ground. When the laser measuring head 315 is adjusted to an appropriate height with the rotation of the third gear disk 35 and sixth gear disk 313, the laser beam emitted by the laser measuring head 315 measures the distance of the tunnel. During distance measurement, the protective drainage ring 314 protects the laser measuring head 315. When water droplets fall on the protective drainage ring 314, the protective drainage ring 314 drains the water droplets, which is beneficial to preventing water droplets from falling on the laser measuring head 315 and eroding the laser measuring head 315, affecting the service life of the laser measuring head 315; During cross-section measurement, the second gear disk 34 fixedly connected to the output end is driven by the first motor 39 to rotate. The rotating second gear disk 34 drives the fourth gear disk 310 engaged at the bottom to rotate synchronously. The rotating second gear disk 34 and fourth gear disk 310 drive the corresponding first gear disk 33 and fifth gear disk 312 connected thereto to rotate synchronously through the first connecting rod and the second connecting rod fixedly connected to the middle of one end respectively. The rotating first gear disk 33 and fifth gear disk 312 roll along the outer surface of the arc-shaped pressure-bearing plate 38 engaged therewith under the restriction of the arc-shaped limiting sleeve 31, so as to drive the arc-shaped limiting sleeve 31 to slide along the arc-shaped pressure-bearing plate 38 to one side through the first support plate 37 connected to the second gear disk 34 and the arc-shaped clamping plate 36 fixed to one end of the first support plate 37, thereby driving the third gear disk 35, sixth gear disk 313, lifting plate 323 connected to one end of the arc-shaped limiting sleeve 31 and the protective drainage ring 314 slidably connected to the outer side of one end of the lifting plate 323 to slowly move from one side inside the tunnel to the other side inside the tunnel. During this process, the upper surface of the protective drainage ring 314 always contacts the tunnel wall. When the protective drainage ring 314 moves to the position where the cross-section of the tunnel wall is deformed, the deformed position will push the protective drainage ring 314 to move downward along the limiting column sleeve 328 under the restriction of the pressing plate 319 fixedly connected to the inner upper side thereof. During the downward movement of the pressing plate 319, the inner top end of the protective drainage ring 314 connected thereto will squeeze the auxiliary spring 320 provided above the limiting column sleeve 328, so that the bottom of the pressing plate 319 can be slowly and stably clamped onto the pressure sensing block 318. The pressure sensing block 318 transmits the sensed pressure magnitude to the data analysis module provided inside the laser measuring head 315, and the data analysis module obtains the magnitude of the cross-section deformation of the tunnel main body 1 according to the sensed pressure magnitude.

[0019] Embodiment 2 Please refer to Figure 1 、 Figure 2 、 Figure 3 、 Figure 5 、 Figure 6 and Figure 7 As shown in, a guide rail mechanism 2 is provided at the bottom of the arc-shaped pressure-bearing plate 38. The guide rail mechanism 2 includes a slider 24. A slider 24 is fixedly connected to the front and rear sides of the bottom of the arc-shaped pressure-bearing plate 38. A guide pulley 25 is rotatably connected to the middle of the bottom end of the slider 24. A moving track 21 is provided in the middle of one side of the slider 24. A limiting cavity 22 is opened in the middle of one side of the moving track 21. Three guide slide bars 23 are fixedly arranged at equal intervals inside the limiting cavity 22, and the guide slide bars 23 penetrate through one side of the slider 24.

[0020] In this embodiment, during cross-section detection and ranging, the guiding pulley 25 drives the arc-shaped bearing plate 38 fixedly connected to the top of the slider 24 to move towards one end through the slider 24 provided above. During the process of the arc-shaped bearing plate 38 moving towards one end, the middle part on one side of the slider 24 will slide slowly intermittently towards one end along the limiting cavity 22 under the restriction of the guiding slide bar 23, thereby driving the measuring mechanism 3 provided on the arc-shaped bearing plate 38 to move slowly towards one end.

[0021] Working principle and usage process of this device: When measuring distance, the second motor 321 drives the driving gear 326 fixedly connected to one end of the column rod through the column rod fixedly connected to the output end to rotate. The rotating driving gear 326 drives the third gear disk 35 and the sixth gear disk 313 meshed respectively at the upper and lower ends to rotate synchronously. The rotating third gear disk 35 and sixth gear disk 313 drive the position of the positioning rod 322 fixedly connected to one end to change with the rotation of the third gear disk 35 and sixth gear disk 313, thereby driving the lifting plate 323 rotatably connected to one end of the positioning rod 322 to move up and down with the rotating third gear disk 35 and sixth gear disk 313, so as to adjust the height of the laser measuring head 315 provided in the middle of one end of the lifting plate 323 from the tunnel ground. When the laser measuring head 315 is adjusted to an appropriate height with the rotation of the third gear disk 35 and sixth gear disk 313, the light beam emitted by the laser measuring head 315 measures the distance of the tunnel. After the distance measurement is completed, the first motor 39 drives the second gear disk 34 fixedly connected to the output end to rotate. The rotating second gear disk 34 drives the fourth gear disk 310 meshed at the bottom to rotate synchronously. The rotating second gear disk 34 and fourth gear disk 310 drive the first gear disk 33 and the fifth gear disk 312 connected correspondingly to rotate synchronously through the first connecting rod and the second connecting rod fixedly connected to the middle of one end respectively. The rotating first gear disk 33 and fifth gear disk 312 roll along the outer surface of the arc-shaped bearing plate 38 engaged under the restriction of the arc-shaped limiting sleeve 31, so as to drive the arc-shaped limiting sleeve 31 to slide to one side along the arc-shaped bearing plate 38 through the first support plate 37 connected to the second gear disk 34 and the fourth gear disk 310 and the arc-shaped clamping plate 36 fixed to one end of the first support plate 37, thereby driving the third gear disk 35, the sixth gear disk 313, the lifting plate 323 and the protective drainage ring 314 slidably connected to the outer side of one end of the lifting plate 323 connected to one end of the arc-shaped limiting sleeve 31 to slowly move from one side inside the tunnel to the other side inside the tunnel. During this process, the upper surface of the protective drainage ring 314 always contacts the tunnel wall. When the protective drainage ring 314 moves to the position where the cross-section of the tunnel wall is deformed, the deformed position will push the protective drainage ring 314 to move down along the limiting column sleeve 328 under the restriction of the pressing plate 319 fixedly connected to the inner side above. During the downward movement of the pressing plate 319, the inner top end of the protective drainage ring 314 connected thereto will squeeze the auxiliary spring 320 provided above the limiting column sleeve 328, so that the bottom of the pressing plate 319 can be slowly and stably clamped onto the pressure sensing block 318. The pressure sensing block 318 transmits the sensed pressure magnitude to the data analysis module provided inside the laser measuring head 315. The data analysis module obtains the magnitude of the cross-section deformation of the tunnel main body 1 according to the sensed pressure magnitude. After the measurement of one position is completed, the guide pulley 25 drives the arc-shaped bearing plate 38 fixedly connected to the top of the slider 24 to move to one end through the slider 24 provided above.During the process of the arc-shaped bearing plate 38 moving towards one end, the middle part on one side of the slider 24 will slide intermittently and slowly towards one end along the limiting cavity 22 opened on one side of the moving track 21 under the restriction of the guiding slide bar 23, thereby driving the measuring mechanism 3 provided on the arc-shaped bearing plate 38 to slowly move towards one end, and then the other positions of the tunnel main body 1 can be measured.

[0022] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification is only the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection required by the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for measuring tunnel deformation, comprising a measuring mechanism (3), characterized in that: The measuring mechanism (3) comprises an arc-shaped pressure-bearing plate (38), the outer side of the arc-shaped pressure-bearing plate (38) is slidably connected to an arc-shaped limiting sleeve (31), the upper and lower ends of one end of the arc-shaped limiting sleeve (31) are fixedly connected to a fixing block (325), one end of the fixing block (325) fixed at the middle of the top end of the arc-shaped limiting sleeve (31) is rotatably connected to the third gear plate (35), one end of the fixing block (325) fixed at the middle of the bottom end of the arc-shaped limiting sleeve (31) is rotatably connected to the sixth gear plate (313), and the middle of one end of the arc-shaped limiting sleeve (31) is rotatably connected to a driving gear (326), and the driving gear (326) is located between the third gear plate (35) and the sixth gear plate (313). The driving gear (326) is provided with a lifting plate (323) at one end, the top of the lifting plate (323) is rotatably connected to the positioning rod (322) fixed above one end of the third gear plate (35), the bottom of the lifting plate (323) is rotatably connected to the positioning rod (322) fixed above one end of the sixth gear plate (313), and one end of the lifting plate (323) is slidably connected to a protective drainage ring (314) at one end of the lifting plate (323).

2. The device for tunnel deformation measurement according to claim 1, characterized in that: A lifting and limiting cavity is provided in the middle of the other end of the protective drainage ring (314); the lifting plate (323) is slidably connected to the lifting and limiting cavity; a mounting plate (317) is fixedly connected below one end of the lifting plate (323); a turntable (316) is rotatably connected to the middle of the top of the mounting plate (317); a laser measuring head (315) is fixedly connected to the top of the turntable (316); a limiting column sleeve (328) is fixedly connected to the top of the laser measuring head (315); a pressing plate (319) is slidably connected to the inner side of the limiting column sleeve (328); the top of the pressing plate (319) is fixedly connected to the inner wall of the top of the inner side of the protective drainage ring (314); an auxiliary spring (320) is provided above the outer side of the pressing plate (319); and a pressure sensing block (318) is provided below the pressing plate (319).

3. The device for tunnel deformation measurement according to claim 1, characterized in that: The other end of the arc-shaped limiting sleeve (31) is detachably connected to an arc-shaped clamping plate (36) via a nut; an arc-shaped guide cavity (311) is provided on the inner side of the arc-shaped pressure plate (38); a column rod fixed at the middle of one end of the driving gear (326) is connected through the middle of the arc-shaped limiting sleeve (31) and the arc-shaped guide cavity (311); the other end of the fixing block (325) fixedly connected to the top of the arc-shaped limiting sleeve (31) is rotatably connected to the first gear plate (33); The other end of the fixed block (325) fixedly connected to the bottom end of the positioning sleeve (31) is rotatably connected to the fifth gear plate (312); an arcuate slot (32) is provided in the middle of the upper and lower surfaces of the arcuate limiting sleeve (31); the bottom of the first gear plate (33) is connected to the arcuate slot (32) provided on the upper surface of the arcuate limiting sleeve (31); and the top of the fifth gear plate (312) is connected to the arcuate slot (32) provided on the lower surface of the arcuate limiting sleeve (31).

4. The device for tunnel deformation measurement according to claim 3, characterized in that: A second motor (321) is fixedly connected to the middle of the other end of the arc-shaped clamping plate (36); an output end of the second motor (321) is fixedly connected to a column rod fixed to the middle of one end of the driving gear (326); a first support plate (37) is fixedly connected to the other end of the arc-shaped clamping plate (36); a second gear plate (34) is rotatably connected to the top of the other end of the first support plate (37); a fourth gear plate (310) is rotatably connected to the bottom of the other end of the first support plate (37); the second gear plate (34) and the fourth gear plate (310) are meshedly connected to each other; a support hoop plate (324) is fixedly connected to the middle of one side of the first support plate (37); a first motor (39) is fixedly connected to the top of the support hoop plate (324); and an output end of the first motor (39) is fixedly connected to the middle of one end of the second gear plate (34).

5. The device for tunnel deformation measurement according to claim 1, characterized in that: A guide rail mechanism (2) is provided at the bottom of the arc-shaped pressure-bearing plate (38), and the guide rail mechanism (2) includes a slider (24). A slider (24) is fixedly connected to both the front and rear sides of the bottom of the arc-shaped pressure-bearing plate (38), and a guide pulley (25) is rollingly connected to the middle of the bottom end of the slider (24). A movable track (21) is provided in the middle of one side of the slider (24), and a limit cavity (22) is provided in the middle of one side of the movable track (21). Three guide slide bars (23) are fixed at equal intervals on the inner side of the limit cavity (22), and the guide slide bars (23) are connected through one side of the slider (24).

6. The device for tunnel deformation measurement according to claim 3, characterized in that: A first connecting rod is fixedly connected between the middle portion of one end of the first gear plate (33) and the middle portion of one end of the second gear plate (34), and a second connecting rod is fixedly connected between the middle portion of one end of the fifth gear plate (312) and the middle portion of one end of the fourth gear plate (310).

7. The device for tunnel deformation measurement according to claim 1, characterized in that: An arc-shaped positioning cavity (327) is provided on the inner side of the arc-shaped limiting sleeve (31), and the arc-shaped positioning cavity (327) is slidably connected to the arc-shaped pressure-bearing plate (38). A tunnel body (1) is provided on the outer side of the protective drainage ring (314).

8. The device for tunnel deformation measurement according to claim 4, characterized in that: The front and rear sides of one end of the first support plate (37) are respectively fixedly connected to the front and rear sides of one end of the arc-shaped clamping plate (36); the second motor (321) is located in the middle of the cavity between the first support plate (37) and the arc-shaped clamping plate (36); and the middle of one end of the second motor (321) is fixedly connected to the middle of one end of the first support plate (37).

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