Tunnel deformation monitoring device

Abstract

The invention relates to the technical field of tunnel deformation monitoring, and discloses a tunnel deformation monitoring device which comprises a shell and a total station, and further comprises a fixing mechanism arranged at the upper end of the shell and used for fixing the total station; the telescopic assembly is arranged on the top surface of the shell, and the telescopic assembly is used for adjusting the height of the total station when monitoring different heights in the tunnel; when the rail sinks, water in the water storage tank enables the air bag plate to be always located on the horizontal plane, then the total station is placed on the top face of the air bag plate, the shell is placed on the surface of the rail, the total station is fixed through the fixing mechanism, and the total station does not incline and is always located on the horizontal plane. Therefore, the data during deformation monitoring of the tunnel is accurate, the influence on the operation safety and efficiency is avoided, and the situation that the subway tunnel may collapse or crack and endanger the safety of passengers and workers due to structural deformation is avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of tunnel deformation monitoring, in particular to a tunnel deformation monitoring device. Background Art

[0002] Tunnel deformation monitoring is to ensure the structural safety and stability of the tunnel. Timely detection and assessment of deformation can prevent potential collapse or damage, protect the safety of personnel and equipment, and at the same time extend the service life of the tunnel and reduce maintenance and operating costs. Tunnels are long and narrow passages that pass through underground or mountainous areas. They are usually used for transportation, such as subways, roads or pipelines. They can provide convenience in avoiding ground obstacles, allowing people and materials to pass smoothly. Tunnels can be divided into traffic tunnels, hydraulic tunnels, municipal tunnels, mining tunnels, military tunnels, etc.

[0003] Traffic tunnels are the most common tunnels, including subway tunnels, railway tunnels and high-speed tunnels. Subway tracks may sink due to geological conditions, changes in groundwater levels and long-term operations. Regular monitoring is an important measure to ensure track safety and stability.

[0004] When monitoring a subway tunnel, the outer shell is generally placed on the track, and then the total station is fixed on the outer shell. The staff pushes the outer shell to slide on the track to monitor the subway tunnel. However, when the subway track sinks, the total station will be tilted when it is fixed, making the total station's monitoring data on tunnel deformation inaccurate. Inaccurate deformation monitoring data affects operational safety and efficiency, and cannot accurately detect structural deformation, which may cause collapse or cracks in the subway tunnel, endangering the safety of passengers and staff.

[0005] To this end, the present invention provides a tunnel deformation monitoring device. Summary of the invention

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The present invention provides a tunnel deformation monitoring device, comprising a shell, a total station, wherein the total station is used to measure and record the position of ground points in the tunnel, and further comprising: a fixing mechanism arranged at the upper end of the shell, wherein the fixing mechanism is used to fix the total station; a telescopic component arranged on the top surface of the shell, wherein the telescopic component is used to adjust the height of the total station when monitoring different heights in the tunnel; and a mounting component arranged on the top surface of the telescopic component, wherein the mounting component is used to level the total station; wherein the mounting component comprises: a mounting plate fixedly connected to the top surface of the telescopic component; a water storage tank opened on the top surface of the mounting plate; and an air bag plate arranged in the water storage tank, wherein the top surface of the air bag plate is used to place the total station.

[0008] Specifically, the total station will not tilt and will always be in a horizontal plane, so that the data for tunnel deformation monitoring is accurate, avoiding affecting operational safety and efficiency, and avoiding deformation of the tunnel structure, which may cause the subway tunnel to collapse or crack, endangering the safety of passengers and staff.

[0009] Preferably, the fixing mechanism includes: a first movable rod arranged in the shell; a first adjustment component movably connected to the upper end of the shell; a fixing component fixed to the top of the first adjustment component; and a second adjustment component arranged on the side of the first adjustment component.

[0010] Specifically, the height of the total station is adjusted so that the total station can monitor the deformation of the tunnel at different heights.

[0011] Preferably, the first adjustment component includes: a movable plate arranged at the upper end of the shell, a plurality of slots are opened on the side of the upper end of the movable plate; a second movable rod sleeved on the upper end of the movable plate, a plurality of mounting slots are opened on the side of the second movable rod, and the mounting slots correspond to the slots in sequence; a tension spring arranged in the mounting slot, one end of the tension spring is fixedly connected to the mounting slot; a first magnet fixedly connected to the other end of the tension spring; and a first sliding slot opened on both sides of the movable plate.

[0012] Preferably, the fixing assembly comprises: a connecting rope fixedly connected to the upper end of the second movable rod; and a first fixing plate fixedly connected to the end of the connecting rope.

[0013] Preferably, the second adjustment component comprises: a telescopic rod slidably disposed in the first sliding groove, the end of the telescopic rod being fixedly connected to the second movable rod; a connecting rod fixedly connected to the end of the telescopic rod; and a socket opened on the telescopic rod.

[0014] Preferably, the second adjustment component further comprises: a moving unit movably connected to the socket; and a spring fixed to a side of the connecting rod.

[0015] Preferably, the movable unit comprises: a movable plate movably connected in the socket; a fixed rod fixed to one end of the movable plate; a mounting block arranged at the end of the fixed rod; and a plurality of second magnets arranged on the mounting block, the second magnets corresponding to the first magnets in sequence, and the magnetic poles of the second magnets and the first magnets are opposite.

[0016] Specifically, the adjusted position is fixed, and after adjusting the height, the deformation of the tunnel is monitored to avoid deformation of the tunnel structure, which may cause collapse or cracks in the subway tunnel.

[0017] Preferably, the telescopic assembly comprises: a telescopic cylinder fixedly connected to the top of the shell; a second sliding groove opened on the side wall of the telescopic cylinder; and a sliding rod slidably connected to the second sliding groove.

[0018] Preferably, it also includes a driving mechanism, and a third slide groove is opened at the lower end of the shell, and the driving mechanism includes: a driving component arranged inside the shell; a mounting shaft arranged at the lower end of the shell; a first roller fixedly connected to the mounting shaft; a second roller movably connected to the third slide groove; a second fixing plate fixedly installed on the bottom surface of the shell; and a third roller arranged on the side of the second fixing plate.

[0019] Preferably, the drive assembly includes: a drive motor fixedly installed in the shell; a planetary reducer arranged at the output end of the drive motor; a transmission belt arranged on the side of the planetary reducer; and a transmission belt arranged at the end of the connecting shaft, and the transmission belt is connected between the installation shaft and the connecting shaft.

[0020] Specifically, subway tunnels are monitored to avoid deformation of the tunnel structure, which may cause collapse or cracks in the subway tunnel, endangering the safety of passengers and staff.

[0021] The beneficial effects of the present invention are as follows: a tunnel deformation monitoring device described in the present invention, when the track sinks, the water in the water tank keeps the airbag plate in a horizontal plane, then the total station is placed on the top surface of the airbag plate, and then the shell is placed on the surface of the track, the track squeezes the fixing mechanism, so that the fixing mechanism fixes the total station, and when it is necessary to monitor the deformation of different heights of the tunnel, the height of the total station is adjusted by the telescopic component, so that the total station can monitor the deformation of different heights of the tunnel, and when the telescopic component adjusts the height of the total station, the total station will not tilt and is always in a horizontal plane, so that the data of the total station when monitoring the deformation of the tunnel is accurate, avoiding affecting the operational safety and efficiency, and avoiding deformation of the tunnel structure, which may cause the subway tunnel to collapse or crack, endangering the safety of passengers and staff.

[0022] The tunnel deformation monitoring device described in the present invention, when it is necessary to adjust the height, pull the movable plate, the movable plate drives the fixed rod, the mounting block, and the second magnet to move, the second magnet moves and is not attracted to the first magnet, at this time, the tension spring drives the first magnet to reset and is not engaged with the slot, the second adjustment component is held and moved upward, the second adjustment component moves upward and drives the second movable rod, the connecting rope, the first fixed plate, and the telescopic component to move upward, when the height is adjusted, release the movable plate, the spring drives the movable unit to reset, the spring is fixed between the connecting rod and the fixed rod, so that the second magnet absorbs the first magnet, when the height is adjusted, the first magnet corresponds to the slot after the move, so that after the movable unit is released, the second magnet and the first magnet are attracted to each other, thereby fixing the adjusted position, after adjusting the height, monitoring the tunnel deformation to avoid deformation of the tunnel structure.

[0023] A tunnel deformation monitoring device described in the present invention, when monitoring railway tunnels, high-speed tunnels and the like in traffic tunnels, the driving motor drives the planetary reducer to reduce speed, the planetary reducer drives the connecting shaft to rotate, the connecting shaft drives the transmission belt to rotate, the transmission belt drives the installation shaft and the first roller to rotate, thereby driving the shell and the total station to move to monitor the tunnel; when monitoring a subway tunnel, the shell is placed on the surface of the track, the third roller contacts the side wall of the track, the stability of the shell when the monitoring personnel pushes the shell, the track contacts the second roller, the second roller moves upward, thereby contacts the fixing mechanism, so that the fixing mechanism fixes the total station, the monitoring personnel push the shell to move, thereby monitoring the deformation of the subway tunnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the structure of the present invention;

[0025] Figure 2 It is a schematic diagram of the internal structure of the present invention;

[0026] Figure 3 This is a schematic diagram of the structure of the first adjustment component and the second adjustment component of the present invention;

[0027] Figure 4 for Figure 3 A partial enlarged schematic diagram in the middle;

[0028] Figure 5 It is a schematic diagram of the structure of the telescopic assembly and the second adjustment assembly of the present invention;

[0029] Figure 6 It is a schematic diagram of the cross-sectional structure of the shell of the present invention;

[0030] Figure 7 for Figure 6 A partial enlarged schematic diagram of point B in the middle.

[0031] In the figure: 1, housing; 2, total station; 3, fixing mechanism; 31, first movable rod; 32, first adjustment assembly; 33, fixing assembly; 34, second adjustment assembly; 321, movable plate; 322, slot; 323, second movable rod; 324, mounting slot; 325, tension spring; 326, first magnet; 327, first slide slot; 331, connecting rope; 332, first fixing plate; 341, telescopic rod; 342, connecting rod; 343, jack; 344, moving unit; 345, spring; 3441, moving plate; 3442, fixing rod; 3443, mounting block; 3444, second magnet; 4, telescopic assembly; 41, telescopic cylinder; 42, second slide groove; 43, sliding rod; 5, mounting assembly; 51, mounting plate; 52, water storage tank; 53, airbag plate; 6, driving mechanism; 61, driving assembly; 62, mounting shaft; 63, first roller; 64, third slide groove; 65, second roller; 66, second fixing plate; 67, third roller; 611, driving motor; 612, planetary reducer; 613, connecting shaft; 614, transmission belt. DETAILED DESCRIPTION

[0032] The subject matter described herein will now be discussed with reference to example embodiments. It should be understood that the discussion of these embodiments is only to enable those skilled in the art to better understand and implement the subject matter described herein, and the functions and arrangements of the elements discussed may be changed without departing from the scope of protection of the present specification. Various examples may omit, replace or add various processes or components as needed. In addition, the features described relative to some examples may also be combined in other examples.

[0033] like Figures 1 to 7 As shown, a tunnel deformation monitoring device according to an embodiment of the present invention is described, please refer to Figure 1 , Figure 2 , Figure 3 , including a shell 1, a total station 2, the total station 2 is used to measure and record the position of ground points in the tunnel, and also includes: a fixing mechanism 3 arranged at the upper end of the shell 1, the fixing mechanism 3 is used to fix the total station 2; a telescopic component 4 arranged on the top surface of the shell 1, the telescopic component 4 is used to adjust the height of the total station 2 when monitoring different heights in the tunnel; and a mounting component 5 arranged on the top surface of the telescopic component 4, the mounting component 5 is used to level the total station 2; wherein, the mounting component 5 includes: a mounting plate 51 fixedly connected to the top surface of the telescopic component 4; a water storage tank 52 opened on the top surface of the mounting plate 51; and an air bag plate 53 arranged in the water storage tank 52, the top surface of the air bag plate 53 is used to place the total station 2.

[0034] Specifically, in the initial state, when the track sinks, the water in the water tank 52 keeps the airbag plate 53 in a horizontal plane, and then the total station 2 is placed on the top surface of the airbag plate 53, and then the shell 1 is placed on the surface of the track. The track squeezes the fixing mechanism 3 so that the fixing mechanism 3 fixes the total station 2. When it is necessary to monitor the deformation of different heights of the tunnel, the height of the total station 2 is adjusted by the telescopic component 4, so that the total station 2 can monitor the deformation of different heights of the tunnel. When the telescopic component 4 adjusts the height of the total station 2, the total station 2 will not tilt and is always in a horizontal plane, so that the data of the total station 2 when monitoring the deformation of the tunnel is accurate, avoiding affecting the operational safety and efficiency, and avoiding deformation of the tunnel structure, which may cause the subway tunnel to collapse or crack, endangering the safety of passengers and staff.

[0035] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 5 The fixing mechanism 3 includes: a first movable rod 31 arranged in the shell 1; a first adjustment component 32 movably connected to the upper end of the shell 1; a fixing component 33 fixed to the top of the first adjustment component 32; and a second adjustment component 34 arranged on the side of the first adjustment component 32.

[0036] Specifically, when the shell 1 is placed on the surface of the track, the track contacts the first movable rod 31, and the first movable rod 31 moves upward to contact the first adjusting component 32, so that the first adjusting component 32 moves to drive the fixing component 33 to move, and the fixing component 33 moves to fix the total station 2, so that the stability of the total station 2 is increased when the shell 1 is moved. When it is necessary to monitor positions at different heights in the tunnel, the second adjusting component 34 is pulled to adjust the height of the first adjusting component 32, the telescopic component 4 and the installation component 5, and then the height of the total station 2 is adjusted. At the same time, the total station 2 will not tilt at an angle, so that the total station 2 can monitor the deformation of different heights of the tunnel. At the same time, the monitoring data of tunnel deformation is more accurate, avoiding deformation of the tunnel structure, which may cause collapse or cracks in the subway tunnel, endangering the safety of passengers and staff.

[0037] Please refer to Figure 2 , Figure 3 , Figure 4The first adjustment component 32 includes: a movable plate 321 arranged at the upper end of the shell 1, and a plurality of slots 322 are opened on the side of the upper end of the movable plate 321; a second movable rod 323 sleeved on the upper end of the movable plate 321, and a plurality of mounting grooves 324 are opened on the side of the second movable rod 323, and the mounting grooves 324 correspond to the slots 322 in sequence; a tension spring 325 arranged in the mounting groove 324, and one end of the tension spring 325 is fixedly connected to the mounting groove 324; a first magnet 326 fixedly connected to the other end of the tension spring 325; and a first sliding groove 327 opened on both sides of the movable plate 321.

[0038] Please refer to Figure 2 , Figure 3 The fixing assembly 33 includes: a connecting rope 331 fixedly connected to the upper end of the second movable rod 323; and a first fixing plate 332 fixedly connected to the end of the connecting rope 331.

[0039] Please refer to Figure 2 , Figure 3 , Figure 5 The second adjustment component 34 includes: a telescopic rod 341 slidably disposed in the first sliding groove 327, the end of the telescopic rod 341 is fixedly connected to the second movable rod 323; a connecting rod 342 fixedly connected to the end of the telescopic rod 341; and a socket 343 opened on the telescopic rod 341.

[0040] Please refer to Figure 3 , Figure 4 , Figure 5 The second adjustment component 34 also includes: a moving unit 344 movably connected to the socket 343; and a spring 345 fixed to the side of the connecting rod 342.

[0041] Please refer to Figure 3 , Figure 4 , Figure 5 The movable unit 344 includes: a movable plate 3441 movably connected to the socket 343; a fixed rod 3442 fixedly connected to one end of the movable plate 3441; a mounting block 3443 arranged at the end of the fixed rod 3442; and a plurality of second magnets 3444 arranged on the mounting block 3443, wherein the second magnets 3444 correspond to the first magnets 326 in sequence, and the magnetic poles of the second magnets 3444 and the first magnets 326 are opposite.

[0042] Specifically, when the height needs to be adjusted, the movable plate 3441 is pulled, and the movable plate 3441 drives the fixed rod 3442, the mounting block 3443, and the second magnet 3444 to move. The second magnet 3444 moves and is not attracted to the first magnet 326. At this time, the tension spring 325 drives the first magnet 326 to reset and is not engaged with the slot 322. The second adjustment component 34 is held and moved upward. The second adjustment component 34 moves upward and drives the second movable rod 323, the connecting rope 331, the first fixed plate 332, and the telescopic component 4 to move upward. When the height adjustment is completed, the movable plate 3441 is released, and the spring 345 drives the movable unit 344 to move upward. 344 is reset, and the spring 345 is fixed between the connecting rod 342 and the fixing rod 3442, so that the second magnet 3444 adsorbs the first magnet 326. When the height is adjusted, the first magnet 326 corresponds to the slot 322 after the movement, so that after the moving unit 344 is released, the second magnet 3444 and the first magnet 326 adsorb to each other, thereby fixing the adjusted position. After the adjusted height, the angle of the total station 2 will not tilt. The total station 2 monitors the deformation of the tunnel to avoid deformation of the tunnel structure, which may cause collapse or cracks in the subway tunnel and endanger the safety of passengers and staff.

[0043] Please refer to Figure 5 The telescopic assembly 4 includes: a telescopic cylinder 41 fixed to the top of the shell 1; a second slide groove 42 opened on the side wall of the telescopic cylinder 41; and a sliding rod 43 slidably connected to the second slide groove 42.

[0044] Specifically, when the height of the total station 2 is adjusted, the second movable rod 323 moves to drive the sliding rod 43 to move. The sliding rod 43 is fixedly connected between the inner cylinder of the telescopic cylinder 41 and the second movable rod 323. The sliding rod 43 moves to drive the inner cylinder of the telescopic cylinder 41, the mounting assembly 5, and the total station 2 to move, thereby adjusting the height of the total station 2, and then monitoring the deformation of the tunnel to avoid deformation of the tunnel structure.

[0045] Please refer to Figure 2 , Figure 6 , Figure 7 , also includes a driving mechanism 6, a third slide groove 64 is opened at the lower end of the shell 1, and the driving mechanism 6 includes: a driving component 61 arranged inside the shell 1; a mounting shaft 62 arranged at the lower end of the shell 1; a first roller 63 fixedly connected to the mounting shaft 62; a second roller 65 movably connected to the third slide groove 64; a second fixing plate 66 fixedly installed on the bottom surface of the shell 1; and a third roller 67 arranged on the side of the second fixing plate 66.

[0046] Please refer to Figure 6 , Figure 7The driving assembly 61 includes: a driving motor 611 fixedly installed in the housing 1; a planetary reducer 612 arranged at the output end of the driving motor 611; a transmission belt 614 arranged on the side of the planetary reducer 612; and a transmission belt 614 arranged at the end of the connecting shaft 613, and the transmission belt 614 is transmission-connected between the installation shaft 62 and the connecting shaft 613.

[0047] Specifically, when monitoring railway tunnels, high-speed tunnels, etc. in traffic tunnels, the driving motor 611 drives the planetary reducer 612 to reduce speed, the planetary reducer 612 drives the connecting shaft 613 to rotate, the connecting shaft 613 drives the transmission belt 614 to rotate, and the transmission belt 614 drives the installation shaft 62 and the first roller 63 to rotate, thereby driving the shell 1 and the total station 2 to move to monitor the tunnel. When monitoring the subway tunnel, the shell 1 is placed on the surface of the track, and the third roller 67 contacts the side wall of the track to increase the stability of the monitoring personnel when pushing the shell 1. The subway track resists the second roller 65, and the second roller 65 moves upward, thereby resisting the fixing mechanism 3, so that the fixing mechanism 3 fixes the total station 2. The monitoring personnel push the shell 1 to move, thereby monitoring the subway tunnel to avoid deformation of the tunnel structure, which may cause the subway tunnel to collapse or crack, endangering the safety of passengers and staff.

[0048] An example of the present specific implementation mode is described above, but the present embodiment is not limited to the above-mentioned specific implementation mode, which is merely illustrative and not restrictive. A person skilled in the art may make many forms inspired by the present embodiment, all of which are protected by the present embodiment.

Claims

1. A tunnel deformation monitoring device, comprising a housing (1) and a total station (2), characterized in that: Also includes: A fixing mechanism (3) disposed at the upper end of the housing (1), the fixing mechanism (3) being used to fix the total station (2); A telescopic assembly (4) is arranged on the top surface of the housing (1), and the telescopic assembly (4) is used to adjust the height of the total station (2) when monitoring different heights in the tunnel; and A mounting assembly (5) disposed on the top surface of the telescopic assembly (4), wherein the mounting assembly (5) is used to level the total station (2); Wherein, the installation component (5) comprises: A mounting plate (51) fixedly connected to the top surface of the telescopic assembly (4); a water storage tank (52) provided on the top surface of the mounting plate (51); and An airbag plate (53) is arranged in the water storage tank (52), and the top surface of the airbag plate (53) is used for placing a total station (2).

2. A tunnel deformation monitoring device according to claim 1, characterized in that: The fixing mechanism (3) comprises: A first movable rod (31) disposed in the housing (1); A first adjustment component (32) movably connected to the upper end of the housing (1); A fixing component (33) fixedly connected to the top of the first adjusting component (32); and A second adjustment component (34) is arranged on the side of the first adjustment component (32).

3. A tunnel deformation monitoring device according to claim 2, characterized in that: The first adjustment component (32) comprises: A movable plate (321) is arranged at the upper end of the housing (1), and a plurality of slots (322) are provided on the side of the upper end of the movable plate (321); A second movable rod (323) sleeved on the upper end of the movable plate (321), wherein a plurality of mounting grooves (324) are provided on the side of the second movable rod (323), and the mounting grooves (324) correspond to the slots (322) in sequence; A tension spring (325) disposed in the mounting groove (324), one end of the tension spring (325) being fixedly connected to the mounting groove (324); a first magnet (326) fixedly connected to the other end of the tension spring (325); and First sliding grooves (327) are provided on both sides of the movable plate (321).

4. A tunnel deformation monitoring device according to claim 3, characterized in that: The fixing assembly (33) comprises: a connecting rope (331) fixedly connected to the upper end of the second movable rod (323); and A first fixing plate (332) is fixedly connected to the end of the connecting rope (331).

5. A tunnel deformation monitoring device according to claim 2, characterized in that: The second adjustment component (34) comprises: A telescopic rod (341) slidably disposed in the first sliding groove (327), wherein an end of the telescopic rod (341) is fixedly connected to the second movable rod (323); a connecting rod (342) fixedly connected to the end of the telescopic rod (341); and A plug hole (343) is provided on the telescopic rod (341).

6. A tunnel deformation monitoring device according to claim 5, characterized in that: The second adjustment component (34) also includes: a moving unit (344) movably connected to the socket (343); and A spring (345) is fixed to the side of the connecting rod (342).

7. A tunnel deformation monitoring device according to claim 6, characterized in that: The mobile unit (344) comprises: A movable plate (3441) movably connected to the socket (343); A fixing rod (3442) fixedly connected to one end of the moving plate (3441); A mounting block (3443) disposed at the end of the fixing rod (3442); and A plurality of second magnets (3444) are arranged on the mounting block (3443), wherein the second magnets (3444) correspond to the first magnets (326) in sequence, and the magnetic poles of the second magnets (3444) and the first magnets (326) are opposite.

8. The tunnel deformation monitoring device according to claim 1, characterized in that: The telescopic assembly (4) comprises: A telescopic cylinder (41) fixedly connected to the top of the housing (1); A second sliding groove (42) is formed on the side wall of the telescopic cylinder (41); and A sliding rod (43) is slidably connected to the second sliding groove (42).

9. The tunnel deformation monitoring device according to claim 1, characterized in that: It also includes a driving mechanism (6), a third sliding groove (64) is provided at the lower end of the housing (1), and the driving mechanism (6) includes: A drive assembly (61) disposed inside the housing (1); A mounting shaft (62) disposed at the lower end of the housing (1); A first roller (63) fixedly connected to the mounting shaft (62); A second roller (65) movably connected to the third slide groove (64); A second fixing plate (66) fixedly mounted on the bottom surface of the housing (1); and A third roller (67) is arranged on the side of the second fixing plate (66).

10. A tunnel deformation monitoring device according to claim 9, characterized in that: The driving assembly (61) comprises: A driving motor (611) fixedly mounted in the housing (1); A planetary reducer (612) disposed at the output end of the driving motor (611); Arranged on the side of the planetary reducer (612); as well as A transmission belt (614) is arranged at the end of the connecting shaft (613), and the transmission belt (614) is transmission-connected between the installation shaft (62) and the connecting shaft (613).

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