Tensioning regulation and control method for prefabricated pipe gallery connector water-stop belt

Abstract

The invention belongs to the technical field of civil engineering, and particularly relates to a tensioning regulation and control method for a prefabricated pipe gallery joint water-stop belt, which comprises the following steps: S2, tensioning devices are respectively mounted on two sides of a prefabricated pipe gallery joint, and each tensioning device comprises a hydraulic jack for applying controllable tension; and S5, after the water-stop belt reaches the uniform compression state, the tensioning force is fixed and locked through a displacement control device, and it is ensured that the water-stop belt is always kept in the stable compression state in the using process. According to the tensioning regulation and control method for the prefabricated pipe gallery connector water-stop belt, tensioning is facilitated by arranging a supporting mechanism and utilizing a folding pipe, a supporting column and a supporting sleeve are pulled out, so that vacuum suction cups on the supporting column and the supporting sleeve make contact with a prefabricated pipe gallery, and along with tensioning of a tensioning device, the supporting column and the supporting sleeve move in the folding pipe at a constant speed; and it is ensured that in the tensioning process of the prefabricated pipe gallery, the water stop is always kept in a stable compression state in the pressing connection process.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of civil engineering, and particularly relates to a tension control method for a joint sealing strip of a prefabricated pipe gallery. BACKGROUND

[0002] The prefabricated pipe gallery is widely used in urban underground infrastructure construction, and the pipe gallery joint is an important link in the construction process. In order to ensure the waterproof performance of the joint part, a sealing strip is usually installed at the joint.

[0003] In the prior art, the compression of the sealing strip is usually achieved by manual or mechanical means. However, due to the uneven compression force, the sealing strip may be locally damaged or fail to seal, thereby affecting the waterproof performance of the entire pipe gallery. Therefore, it is of great significance to propose a tension control method for a joint sealing strip of a prefabricated pipe gallery to improve the waterproof effect of the joint. SUMMARY

[0004] Based on the above-mentioned technical problems, the present application proposes a tension control method for a joint sealing strip of a prefabricated pipe gallery.

[0005] The tension control method for a joint sealing strip of a prefabricated pipe gallery proposed by the present application comprises the following steps:

[0006] S1, installing a sealing strip at the joint of the prefabricated pipe gallery to ensure that the sealing strip is correctly positioned and covers the joint area.

[0007] S2, installing a tensioning device on both sides of the joint of the prefabricated pipe gallery, the tensioning device comprising a hydraulic jack for applying controllable tension.

[0008] S3, calculating the required uniform compression force according to the material and thickness of the sealing strip to ensure that the sealing strip will not be damaged after compression and can seal the joint at the same time.

[0009] S4, starting the tensioning device to stretch both ends of the sealing strip with a preset tension to ensure that the sealing strip at the joint is uniformly stressed. During the tensioning process, a sensor is used to monitor the stress of the sealing strip in real time to ensure the uniformity during compression.

[0010] S5, when the sealing strip reaches a state of uniform compression, the tensioning force is fixed and locked by a displacement control device to ensure that the sealing strip always maintains a stable compression state during use.

[0011] S6, based on the uniform compression of the sealing strip, the joint area is closed for further improvement of the waterproof performance of the pipe gallery joint.

[0012] Preferably, the tensioning device further comprises steel strands arranged through the two prefabricated pipe galleries, eight of the steel strands are fixedly connected with the inner surfaces of the two prefabricated pipe galleries through first clamps, the hydraulic jack is mounted on one side surface of the first clamp, one end of the piston rod of the hydraulic jack is fixedly connected with a second clamp, and the second clamp is fixedly connected with the steel strand.

[0013] Through the technical scheme, the extension and retraction of the hydraulic jack piston rod drives the second clamp to move, thereby driving the steel strand to move, and the prefabricated pipe gallery joint assembly tensioning is achieved, and the water stop belt is in a crimping state.

[0014] Preferably, the inside of one of the prefabricated pipe galleries is provided with a tensioning machine, and an oil pump of the tensioning machine is fixedly communicated with the oil inlet and the oil outlet of the hydraulic jack through pipelines.

[0015] Through the technical scheme, the tensioning machine is controlled, and a synchronous force control mode is adopted to synchronously apply an oil pressure of 8 MPa to the eight hydraulic jacks, and the maximum oil pressure upper limit value of the hydraulic jack is 50 MPa, so as to prevent the tension from being too large.

[0016] Preferably, the displacement control device comprises a support plate, a telescopic mechanism, a supporting mechanism and an inflation mechanism arranged on the surface of the support plate, the telescopic mechanism comprises symmetrical grooves arranged on the surface of the support plate, the inner walls of the two grooves are slidably connected with support legs, the supporting mechanism comprises a folding pipe, the inner walls of the folding pipe are slidably connected with a support sleeve and a support column, and the surface of the support column is slidably connected with the inner wall of the support sleeve, and the inflation mechanism comprises an air bag, and the surface of the air bag is slidably connected with the surface of the folding pipe.

[0017] Through the technical scheme, the position change occurring when the two prefabricated pipe galleries are spliced can be monitored.

[0018] Preferably, the telescopic mechanism further comprises self-locking universal wheels fixedly installed at the bottoms of the two support legs.

[0019] Through the technical scheme, the self-locking universal wheels facilitate the movement of the support plate and the support legs, and the support plate and the support legs can be fixed when they are not needed.

[0020] Preferably, a drive motor is fixedly installed on one side surface of the support plate, one end of an output shaft of the drive motor is fixedly sleeved with a rotating shaft, both ends of the rotating shaft are mounted on the inner wall of the support plate through bearings, the surface of the rotating shaft is fixedly sleeved with a connecting gear in a symmetrical manner, the surfaces of the two support legs are fixedly connected with racks, and the connecting gear is engaged with the racks.

[0021] Through the above technical solution, the rotation of the output shaft of the driving motor drives the rotating shaft connected to it to rotate, the rotation of the rotating shaft drives the two connecting gears connected to it to rotate synchronously, the rotation of the connecting gear drives the rack engaged with it to move, thereby driving the support leg to move along the inner wall of the slide groove, and then adjusting the height of the support plate.

[0022] Preferably, the support mechanism further comprises vacuum suction cups fixedly mounted on opposite side surfaces of the pillar and the support sleeve, respectively, and the two vacuum suction cups are in contact with the joints of the two prefabricated pipe galleries respectively.

[0023] Through the above technical solution, the vacuum suction cup connects the support pillars and the support sleeves to the joints of the two prefabricated pipe galleries respectively.

[0024] Preferably, a groove is provided on one side surface of the support plate, a bidirectional screw is installed on the inner wall of the groove through a bearing, a servo motor is fixedly installed on the upper surface of the support plate, one end of the output shaft of the servo motor is fixedly sleeved on the upper end of the bidirectional screw, and a T-shaped block is symmetrically distributed on the surface of the bidirectional screw with a thread sleeve, the surface of the T-shaped block is slidably engaged with the inner wall of the groove, and a pushing cylinder is fixedly connected to one side surface of the T-shaped block, and one end of the piston rod of the pushing cylinder is fixedly connected to a connecting plate, a limiting groove is provided on the side surface of the connecting plate away from the pushing cylinder, a limiting rod is installed on the inner wall of the limiting groove through a bearing, a telescopic frame is symmetrically provided on the surface of the limiting rod, and the airbag is fixedly mounted on the side surface of the telescopic frame away from the connecting plate.

[0025] Through the above technical solution, the rotation of the servo motor output shaft drives the bidirectional screw connected to it to rotate, and the rotation of the bidirectional screw drives the two T-shaped blocks connected to it to move relative to each other along the inner wall of the groove, pushing the extension and contraction of the cylinder piston rod to drive the connecting plate connected to it to move, and the movement of the connecting plate enables the airbag to be plugged into the surface of the folding tube, thereby supporting and fixing the folding tube.

[0026] Preferably, the inflation mechanism also includes four air pumps and four cams, and a return spring is provided between the handles and the cylinder bodies of the four air pumps, wherein two of the air pumps are installed on the upper surface of the support plate in a left-right symmetrical distribution, and the upper surface of the support plate is installed with side plates in a left-right symmetrical distribution, and a first connecting shaft is installed between the two side plates through a bearing, wherein the inner walls of the two cams are fixedly sleeved on the surface of the first connecting shaft, and the surfaces of the two cams are in sliding contact with the handles of the two air pumps, and the surface of the support plate close to the water stop is symmetrically distributed with installation grooves, and the other two air pumps are installed The cylinders are respectively installed on the inner walls of the mounting grooves, and the side surfaces of the side plates and the support plates are fixedly installed with rotating motors. The inner walls of the two mounting grooves are respectively installed with second connecting shafts through bearings. The inner walls of the other two cams are respectively fixedly sleeved on the surfaces of the two second connecting shafts. One end of the output shaft of the rotating motor is fixedly sleeved with one end of one of the second connecting shafts. The surfaces of the two second connecting shafts are fixedly sleeved with driving gears. The inner wall of the support plate is installed with a transmission shaft through bearings. The two ends of the transmission shaft are respectively fixedly sleeved with driven gears, and the two driving gears are respectively engaged with the two driven gears.

[0027] Through the above technical solution, the rotation of the output shafts of the two rotating motors respectively drives the first connecting shaft and the second connecting shaft connected thereto to rotate, and the rotation of the first connecting shaft and the second connecting shaft drives the cam connected thereto to rotate. At the same time, the rotation of the second connecting shaft drives the driving gear connected thereto to rotate, and the rotation of the driving gear drives the driven gear meshed with it to rotate, thereby driving the transmission shaft to rotate, so that the meshing of another driven gear on the transmission shaft with another driving gear drives the other second connecting shaft to rotate, and as the cam rotates, the handle on the air pump is driven to move downward, and when the cam moves away from the air pump, the handle of the air pump is reset by the reset spring, thereby achieving the pumping effect.

[0028] Preferably, the air pump is connected to the air bag through a pipe, and the surface of the air bag is provided with capillary pores distributed in a rectangular array.

[0029] Through the above technical solution, the air pump inflates the airbag, and when the folding tube is squeezed, the gas in the airbag overflows through the capillaries.

[0030] The beneficial effects of the present invention are:

[0031] 1. By setting up a supporting mechanism and using a folding tube, tensioning is facilitated. By pulling out the pillars and support sleeves, the vacuum suction cups on the pillars and support sleeves are brought into contact with the prefabricated pipe gallery. As the tensioning device is tensioned, the pillars and support sleeves move at a uniform speed in the folding tube, ensuring that the prefabricated pipe gallery is tensioned and the waterstop is always kept in a stable compression state during the crimping process.

[0032] 2. By setting up an inflation mechanism, it is convenient to support and fix the folding tube. The rotation of the cam drives the air pump to inflate the airbag, so that the airbag expands and unfolds the folding tube, which makes it easier to fix the folding tube. As the tension is applied, the gas in the airbag overflows through the capillaries, making the folding tube easier to fold, thereby determining the displacement change of the prefabricated pipe corridor and the compression displacement of the waterstop during tensioning. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is a schematic diagram of a method for tensioning and controlling a prefabricated pipe gallery joint waterstop proposed in the present invention;

[0034] Figure 2 A three-dimensional diagram of the tensioning machine structure of a tensioning and regulating method for a prefabricated pipe gallery joint waterstop proposed in the present invention;

[0035] Figure 3 A three-dimensional diagram of the support plate structure of a method for tensioning and controlling the waterstop of a prefabricated pipe gallery joint proposed by the present invention;

[0036] Figure 4 A three-dimensional diagram of the installation groove structure of a tensioning and regulating method for a prefabricated pipe gallery joint waterstop proposed in the present invention;

[0037] Figure 5 A three-dimensional diagram of the rotating shaft structure of a tensioning and regulating method for a prefabricated pipe gallery joint waterstop proposed in the present invention;

[0038] Figure 6 A three-dimensional diagram of a bidirectional screw structure for a tensioning and regulating method of a prefabricated pipe gallery joint waterstop proposed in the present invention;

[0039] Figure 7 A three-dimensional diagram of the transmission shaft structure of a method for tensioning and controlling a prefabricated pipe gallery joint waterstop proposed in the present invention;

[0040] Figure 8 A three-dimensional diagram of the connecting plate structure of a method for tensioning and controlling the waterstop of a prefabricated pipe gallery joint proposed by the present invention;

[0041] Figure 9 A three-dimensional diagram of the airbag structure of a method for tensioning and controlling the waterstop of a prefabricated pipe gallery joint proposed by the present invention;

[0042] Figure 10 A three-dimensional diagram of the support sleeve structure of a tensioning and regulating method for a prefabricated pipe gallery joint waterstop proposed in the present invention.

[0043] Figure: 1. Prefabricated pipe gallery; 2. Hydraulic jack; 21. Steel strand; 22. First clamp; 23. Second clamp; 24. Tensioning machine; 3. Support plate; 31. Slide; 311. Support leg; 312. Self-locking universal wheel; 313. Drive motor; 314. Rotating shaft; 315. Connecting gear; 316. Rack; 32. Folding tube; 321. Support sleeve; 322. Pillar; 323. Vacuum suction cup; 324. Groove; 325. Bidirectional screw; 326. Servo motor ; 327. T-shaped block; 328. Push cylinder; 329. Connecting plate; 3210. Limiting groove; 3211. Limiting rod; 3212. Telescopic frame; 33. Airbag; 331. Air pump; 332. Cam; 333. Return spring; 334. Side plate; 335. First connecting shaft; 336. Mounting groove; 337. Rotating motor; 338. Second connecting shaft; 339. Driving gear; 3310. Transmission shaft; 3311. Driven gear; 3312. Capillary pore. DETAILED DESCRIPTION

[0044] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0045] Reference Figures 1-10 A method for tensioning and controlling a waterstop strip at a prefabricated pipe gallery joint comprises the following steps:

[0046] S1. Install waterstop at the joints of prefabricated pipe gallery 1, ensuring that the waterstop is positioned correctly and covers the joint area.

[0047] S2. Install tensioning devices on both sides of the joint of the prefabricated pipe gallery 1. The tensioning devices include hydraulic jacks 2 for applying controllable tension.

[0048] S3. Calculate the required uniform compression force based on the material and thickness of the waterstop to ensure that the waterstop will not be damaged after compression and can seal the joints.

[0049] S4. Start the tensioning device and stretch the two ends of the waterstop with the preset tension to ensure that the waterstop at the joint is evenly stressed. During the tensioning process, use sensors to monitor the stress of the waterstop in real time to ensure uniformity during the compression process.

[0050] S5. When the waterstop reaches a uniformly compressed state, the tension is fixed and locked through the displacement control device to ensure that the waterstop always maintains a stable compression state during use.

[0051] S6. On the basis of uniform compression of the waterstop, the joint area is sealed to further improve the waterproof performance of the corridor joint.

[0052] In order to facilitate tensioning, the tensioning device also includes a steel strand 21 laid through the two prefabricated pipe galleries 1. The eight steel strands 21 are fixedly connected to the inner surfaces of the two prefabricated pipe galleries 1 through a first clamp 22. The hydraulic jack 2 is installed on one side surface of the first clamp 22. One end of the piston rod of the hydraulic jack 2 is fixedly connected to the second clamp 23. The second clamp 23 is fixedly connected to the steel strand 21. The second clamp 23 is moved by the extension and contraction of the piston rod of the hydraulic jack 2, thereby driving the steel strand 21 to move, thereby realizing the assembly and tensioning of the joints of the prefabricated pipe galleries 1, so that the water stop is in a crimped state.

[0053] In order to perform synchronous tensioning, a tensioning machine 24 is installed inside one of the prefabricated pipe corridors 1. The oil pump of the tensioning machine 24 is fixedly connected to the oil inlet and oil outlet of the hydraulic jack 2 through pipelines. By controlling the tensioning machine 24 and adopting a synchronous force control method, an oil pressure of 8MPa is synchronously applied to the eight hydraulic jacks 2. At the same time, the maximum oil pressure upper limit of the hydraulic jack 2 is 50MPa to prevent excessive tension.

[0054] In order to facilitate the monitoring of displacement changes, the displacement control device includes a support plate 3 and a telescopic mechanism, a supporting mechanism and an inflation mechanism arranged on the surface of the support plate 3. The telescopic mechanism includes a slide groove 31 symmetrically distributed on the surface of the support plate 3. The inner walls of the two slide grooves 31 are slidably connected with support legs 311. The support mechanism includes a folding tube 32. The inner walls of the folding tube 32 are slidably connected with a support sleeve 321 and a pillar 322. At the same time, the surface of the pillar 322 is slidably connected with the inner wall of the support sleeve 321. The inflation mechanism includes an airbag 33. The surface of the airbag 33 is slidably plugged into the surface of the folding tube 32.

[0055] To facilitate movement, the telescopic mechanism also includes self-locking universal wheels 312 fixedly installed at the bottom of the two legs 311 respectively. The self-locking universal wheels 312 facilitate movement of the support plate 3 and the legs 311, and can fix the support plate 3 and the legs 311 when they are not needed.

[0056] The cam 314 is fixedly mounted on the support plate 3 to facilitate height adjustment of the support plate 3. A driving motor 313 is fixedly mounted on one side surface of the support plate 3. A rotating shaft 314 is fixedly sleeved on one end of the output shaft of the driving motor 313. Both ends of the rotating shaft 314 are mounted on the inner wall of the support plate 3 through bearings. A connecting gear 315 is fixedly sleeved on the surface of the rotating shaft 314 in a symmetrical distribution. A rack 316 is fixedly connected to the surfaces of the two supporting legs 311. The connecting gear 315 is meshed with the rack 316. The rotation of the output shaft of the driving motor 313 drives the rotating shaft 314 connected thereto to rotate. The rotation of the rotating shaft 314 drives the two connecting gears 315 connected thereto to rotate synchronously. The rotation of the connecting gear 315 drives the rack 316 meshed therewith to move, thereby driving the supporting legs 311 to move along the inner wall of the slide groove 31, thereby adjusting the height of the support plate 3.

[0057] In order to facilitate the contact between the pillars 322 and the support sleeves 321 and the two prefabricated pipe galleries 1, the supporting mechanism also includes vacuum suction cups 323 fixedly installed on the surfaces of the opposite sides of the pillars 322 and the support sleeves 321. The two vacuum suction cups 323 are in contact with the joints of the two prefabricated pipe galleries 1 respectively. The vacuum suction cups 323 connect the pillars 322 and the support sleeves 321 with the joints of the two prefabricated pipe galleries 1 respectively.

[0058] In order to drive the airbag 33 to move, a groove 324 is provided on one side surface of the support plate 3, and a bidirectional screw 325 is installed on the inner wall of the groove 324 through a bearing. A servo motor 326 is fixedly installed on the upper surface of the support plate 3, and one end of the output shaft of the servo motor 326 is fixedly sleeved with the upper end of the bidirectional screw 325. The surface of the bidirectional screw 325 is symmetrically distributed with a T-shaped block 327 threadedly sleeved, and the surface of the T-shaped block 327 is slidably engaged with the inner wall of the groove 324. A pushing cylinder 328 is fixedly connected to one side surface of the T-shaped block 327, and one end of the piston rod of the pushing cylinder 328 is fixedly connected to a connecting plate 329. A limiting groove 321 is provided on the side surface of the connecting plate 329 away from the pushing cylinder 328. 0, a limiting rod 3211 is installed on the inner wall of the limiting groove 3210 through a bearing, and a telescopic frame 3212 is symmetrically distributed on the surface of the limiting rod 3211. The airbag 33 is fixedly installed on the side surface of the telescopic frame 3212 away from the connecting plate 329. The rotation of the output shaft of the servo motor 326 drives the bidirectional screw 325 connected to it to rotate. The rotation of the bidirectional screw 325 drives the two T-shaped blocks 327 connected to it to move relative to each other along the inner wall of the groove 324, pushing the expansion and contraction of the piston rod of the cylinder 328 to drive the connecting plate 329 connected to it to move. The movement of the connecting plate 329 enables the airbag 33 to be plugged into the surface of the folding tube 32, thereby supporting and fixing the folding tube 32.

[0059] By setting up a supporting mechanism and utilizing the folding tube 32, tensioning is facilitated. By pulling out the pillars 322 and the support sleeves 321, the vacuum suction cups 323 on the pillars 322 and the support sleeves 321 are brought into contact with the prefabricated pipe gallery 1. As the tensioning device is tensioned, the pillars 322 and the support sleeves 321 move at a uniform speed in the folding tube 32, ensuring that the prefabricated pipe gallery 1 is tensioned and that the waterstop belt always maintains a stable compression state during the crimping process.

[0060] In order to inflate the inside of the airbag 33, the inflation mechanism also includes four air pumps 331 and four cams 332. A return spring 333 is provided between the handles and the cylinder bodies of the four air pumps 331. Two of the air pumps 331 are installed on the upper surface of the support plate 3 in a left-right symmetrical distribution. The upper surface of the support plate 3 is installed with side plates 334 in a left-right symmetrical distribution. A first connecting shaft 335 is installed between the two side plates 334 through a bearing. The inner walls of the two cams 332 are fixedly sleeved on the surface of the first connecting shaft 335. The surfaces of the two cams 332 are connected to the two air pumps. The handle 331 is in sliding contact, and the surface of one side of the support plate 3 close to the water stop is symmetrically distributed with mounting grooves 336. The other two air pumps 331 are respectively installed on the inner wall of the mounting groove 336. The side plate 334 and one side surface of the support plate 3 are fixedly installed with a rotating motor 337. The inner walls of the two mounting grooves 336 are both installed with a second connecting shaft 338 through a bearing. The inner walls of the other two cams 332 are respectively fixedly sleeved on the surfaces of the two second connecting shafts 338. One end of the output shaft of the rotating motor 337 is fixedly sleeved with one end of one of the second connecting shafts 338. The surfaces of the second connecting shafts 338 are fixedly sleeved with driving gears 339, the inner wall of the support plate 3 is installed with a transmission shaft 3310 through a bearing, and the two ends of the transmission shaft 3310 are fixedly sleeved with driven gears 3311, respectively. The two driving gears 339 are respectively engaged with the two driven gears 3311, and the rotation of the output shafts of the two rotating motors 337 respectively drives the first connecting shaft 335 and the second connecting shaft 338 connected thereto to rotate, and the rotation of the first connecting shaft 335 and the second connecting shaft 338 drives the cam 332 connected thereto to rotate. At the same time, the second connecting shaft 338 The rotation of 38 drives the driving gear 339 connected to it to rotate, and the rotation of the driving gear 339 drives the driven gear 3311 meshed with it to rotate, thereby driving the transmission shaft 3310 to rotate, so that the meshing of another driven gear 3311 on the transmission shaft 3310 and another driving gear 339 drives the other second connecting shaft 338 to rotate, and as the cam 332 rotates, the handle on the air pump 331 moves downward, and when the cam 332 moves away from the air pump 331, the handle of the air pump 331 is reset by the reset spring 333, thereby achieving the inflation effect.

[0061] In order to facilitate the overflow of gas in the airbag 33, the air pump 331 is connected to the airbag 33 through a pipe. At the same time, capillary holes 3312 are distributed in a rectangular array on the surface of the airbag 33. The air pump 331 inflates the airbag 33, and when the folding tube 32 is squeezed, the gas in the airbag 33 overflows through the capillary holes 3312.

[0062] By setting the inflation mechanism, it is convenient to support and fix the folding pipe 32. The rotation of the cam 332 drives the inflator 331 to inflate the air bag 33, so that the air bag 33 expands and unfolds the folding pipe 32, thereby fixing the folding pipe 32. With tension, the gas in the air bag 33 overflows through the capillary hole 3312, so that the folding pipe 32 is convenient to fold, thereby determining the displacement change of the prefabricated pipe gallery 1 and the compression displacement of the water stop belt during tensioning.

[0063] Working principle: when in use, install the water stop belt at the joint of the prefabricated pipe gallery 1, and install the steel strand 21 and the hydraulic jack 2 at the tensioning position 8 of the prefabricated pipe gallery 1 through the first clamping piece 22, and fix the steel strand 21 at one end of the piston rod of the hydraulic jack 2 through the second clamping piece 23;

[0064] Then make the air bag 33 and the folding pipe 32 plug-in, and start the two rotary motors 337. The rotation of the output shafts of the two rotary motors 337 drives the first connecting shaft 335 and the second connecting shaft 338 connected thereto to rotate, respectively. The rotation of the first connecting shaft 335 and the second connecting shaft 338 drives the cam 332 connected thereto to rotate. At the same time, the rotation of the second connecting shaft 338 drives the driving gear 339 connected thereto to rotate. The rotation of the driving gear 339 drives the driven gear 3311 engaged therewith to rotate, thereby driving the transmission shaft 3310 to rotate. The meshing of the other driven gear 3311 on the transmission shaft 3310 with the other driving gear 339 drives the other second connecting shaft 338 to rotate. With the rotation of the cam 332, the handle on the inflator 331 moves downward. When the cam 332 is away from the inflator 331, the handle of the inflator 331 is reset by the reset spring 333, thereby inflating the air bag 33, and conveniently clamping the folding pipe 32;

[0065] Then use the self-locking universal wheel 312 to drive the support plate 3 to approach the joint of the prefabricated pipe gallery 1, and start the driving motor 313. The rotation of the output shaft of the driving motor 313 drives the rotating shaft 314 connected thereto to rotate. The rotation of the rotating shaft 314 drives the two connecting gears 315 connected thereto to rotate synchronously. The rotation of the connecting gear 315 drives the rack 316 engaged therewith to move, thereby driving the support leg 311 to move downward along the inner wall of the sliding groove 31, and then adjusting the height of the support plate 3. Then start the push cylinder 328. The extension of the piston rod of the push cylinder 328 drives the folding pipe 32 to approach the joint gap between the two prefabricated pipe galleries 1. Then pull out the support column 322 and the support sleeve 321, so that the vacuum suction cups 323 on the support column 322 and the support sleeve 321 are adsorbed together with the prefabricated pipe gallery 1.

[0066] Then start the tensioning machine 24. By operating the tensioning machine 24 and adopting a synchronous force control method, 8 MPa of oil pressure is simultaneously applied to the 8 tensioning points. By pulling through the hydraulic jack 2, the water stop belt on the joint of the prefabricated pipe gallery 1 is crimped, so that the support 322 and the support sleeve 321 move into the folding tube 32. At the same time, when the folding tube 32 is squeezed, the gas in the airbag 33 overflows through the capillary 3312.

[0067] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A method for tensioning and controlling a waterstop for a prefabricated pipe gallery joint, characterized in that: The steps include: S1. Install waterstops at the joints of the prefabricated pipe gallery (1), ensuring that the waterstops are positioned correctly and cover the joint area; S2. Installing tensioning devices on both sides of the joint of the prefabricated pipe gallery (1), the tensioning devices including hydraulic jacks (2) for applying controllable tension; S3. Calculate the required uniform compression force based on the material and thickness of the waterstop to ensure that the waterstop will not be damaged after compression and seal the joints at the same time; S4. Start the tensioning device to stretch the two ends of the waterstop with a preset tension to ensure that the waterstop at the joint is evenly stressed. During the tensioning process, use a sensor to monitor the stress of the waterstop in real time to ensure uniformity during the compression process; S5. When the waterstop reaches a uniformly compressed state, the tension is fixed and locked through the displacement control device to ensure that the waterstop always maintains a stable compression state during use; S6. On the basis of uniform compression of the waterstop, the joint area is sealed to further improve the waterproof performance of the corridor joint.

2. The method for tensioning and controlling a prefabricated pipe gallery joint waterstop according to claim 1, characterized in that: The tensioning device also includes a steel strand (21) laid through the two prefabricated pipe galleries (1), and the eight steel strands (21) are fixedly connected to the inner surfaces of the two prefabricated pipe galleries (1) through first clamps (22). The hydraulic jack (2) is installed on a side surface of the first clamp (22), and one end of the piston rod of the hydraulic jack (2) is fixedly connected to a second clamp (23), and the second clamp (23) is fixedly connected to the steel strand (21).

3. The method for tensioning and controlling a prefabricated pipe gallery joint waterstop according to claim 2, characterized in that: A tensioning machine (24) is provided inside one of the prefabricated pipe galleries (1), and an oil pump of the tensioning machine (24) is fixedly connected to an oil inlet and an oil outlet of the hydraulic jack (2) through pipelines.

4. The method for tensioning and controlling a prefabricated pipe gallery joint waterstop according to claim 1, characterized in that: The displacement control device comprises a support plate (3) and a telescopic mechanism, a supporting mechanism and an inflation mechanism arranged on the surface of the support plate (3); the telescopic mechanism comprises sliding grooves (31) symmetrically distributed and opened on the surface of the support plate (3); the inner walls of the two sliding grooves (31) are both slidably engaged with supporting legs (311); the supporting mechanism comprises a folding tube (32); the inner wall of the folding tube (32) is respectively slidably engaged with a supporting sleeve (321) and a pillar (322); and at the same time, the surface of the pillar (322) is slidably engaged with the inner wall of the supporting sleeve (321); the inflation mechanism comprises an airbag (33); the surface of the airbag (33) is slidably engaged with the surface of the folding tube (32).

5. The method for tensioning and controlling a prefabricated pipe gallery joint waterstop according to claim 4, characterized in that: The telescopic mechanism further comprises self-locking universal wheels (312) respectively fixedly mounted on the bottoms of the two supporting legs (311).

6. The method for tensioning and controlling a prefabricated pipe gallery joint waterstop according to claim 4, characterized in that: A driving motor (313) is fixedly mounted on one side surface of the support plate (3); one end of the output shaft of the driving motor (313) is fixedly sleeved with a rotating shaft (314); both ends of the rotating shaft (314) are mounted on the inner wall of the support plate (3) via bearings; a connecting gear (315) is fixedly sleeved on the surface of the rotating shaft (314) in a symmetrical distribution; racks (316) are fixedly connected to the surfaces of the two supporting legs (311); and the connecting gears (315) are meshed with the racks (316).

7. The method for tensioning and controlling a prefabricated pipe gallery joint waterstop according to claim 4, characterized in that: The supporting mechanism further comprises vacuum suction cups (323) respectively fixedly mounted on the surfaces of opposite sides of the pillar (322) and the support sleeve (321), and the two vacuum suction cups (323) respectively contact the joints of the two prefabricated pipe galleries (1).

8. The method for tensioning and controlling a prefabricated pipe gallery joint waterstop according to claim 4, characterized in that: A groove (324) is provided on one side surface of the support plate (3), a bidirectional lead screw (325) is installed on the inner wall of the groove (324) through a bearing, a servo motor (326) is fixedly installed on the upper surface of the support plate (3), one end of the output shaft of the servo motor (326) is fixedly sleeved with the upper end of the bidirectional lead screw (325), a T-shaped block (327) is symmetrically distributed on the surface of the bidirectional lead screw (325), the surface of the T-shaped block (327) is slidably engaged with the inner wall of the groove (324), and one side surface of the T-shaped block (327) is fixedly sleeved with the upper end of the bidirectional lead screw (325). A pushing cylinder (328) is fixedly connected to the surface, one end of the piston rod of the pushing cylinder (328) is fixedly connected to a connecting plate (329), a limiting groove (3210) is provided on the surface of the connecting plate (329) away from the pushing cylinder (328), a limiting rod (3211) is installed on the inner wall of the limiting groove (3210) through a bearing, and a telescopic frame (3212) is symmetrically distributed on the surface of the limiting rod (3211), and the airbag (33) is fixedly installed on the surface of the telescopic frame (3212) away from the connecting plate (329).

9. The method for tensioning and controlling a prefabricated pipe gallery joint waterstop according to claim 4, characterized in that: The inflation mechanism further comprises four air pumps (331) and four cams (332), and a return spring (333) is provided between the handles and the cylinder bodies of the four air pumps (331), wherein two of the air pumps (331) are symmetrically distributed and installed on the upper surface of the support plate (3), and the upper surface of the support plate (3) is symmetrically distributed and installed with side plates (334), and a first connecting shaft (335) is installed between the two side plates (334) through a bearing, wherein the inner walls of the two cams (332) are fixedly sleeved on the surface of the first connecting shaft (335), and the surfaces of the two cams (332) are in sliding contact with the handles of the two air pumps (331), and the surface of the support plate (3) close to the water stop is symmetrically distributed and provided with mounting grooves (336), and the other two air pumps (331) are respectively installed on the The inner wall of the mounting groove (336), the side surface of the side plate (334) and the support plate (3) are both fixedly mounted with a rotating motor (337), the inner walls of the two mounting grooves (336) are both mounted with a second connecting shaft (338) via a bearing, the inner walls of the other two cams (332) are respectively fixedly sleeved on the surfaces of the two second connecting shafts (338), one end of the output shaft of the rotating motor (337) is fixedly sleeved with one end of one of the second connecting shafts (338), the surfaces of the two second connecting shafts (338) are both fixedly sleeved with a driving gear (339), the inner wall of the support plate (3) is mounted with a transmission shaft (3310) via a bearing, the two ends of the transmission shaft (3310) are respectively fixedly sleeved with a driven gear (3311), and the two driving gears (339) are respectively engaged with the two driven gears (3311).

10. The method for tensioning and controlling the waterstop of a prefabricated pipe gallery joint according to claim 9, characterized in that: The air pump (331) is connected to the air bag (33) through a pipeline, and the surface of the air bag (33) is provided with capillary pores (3312) distributed in a rectangular array.

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