A crossing pipe positioning guide device

Abstract

The application discloses a kind of through pipe positioning guide device, it is related to guide device technical field, including chassis, the clamping mechanism includes fixedly installed on chassis fixed disc, the top of the fixed disc is uniformly equipped with multiple support rods, the top of the support rod is fixedly installed with support disc, when the smaller diameter through pipe is pulled, first, outer arc clamping block is placed in through pipe, then start lifting drive mechanism, lifting drive mechanism promotes lifting disc to rise, lifting disc is moved in the process of rising and drives movable block three, movable block three in turn drives movable block four to move, movable block four promotes push block to move, push block is moved to the left by driving rack one through push column, in turn gear is rotated, gear rotation drives rack two to move to the right, in turn moves to the right through push rod, in turn outer arc clamping block is moved to center motion by moving plate, and through pipe is clamped.

Description

Technical Field

[0001] This invention relates to the field of guiding device technology, and specifically to a positioning and guiding device for a through-pipe. Background Technology

[0002] The main dam, spillway, and water conveyance culvert of a reservoir project are collectively known as the "three major components," each indispensable and equally important. The water conveyance culvert, located below the main dam, is the most challenging to repair if it develops any defects.

[0003] Small reservoirs play a significant social, economic, and ecological role in irrigation and water supply. Most of the reservoirs currently in operation were built in the 1950s and 60s. Due to limitations in productivity and historical conditions at the time, construction quality was poor, standards were low, equipment was aging and damaged, and maintenance was lacking. As a result, they have operated with defects for extended periods, leading to significant engineering hazards due to aging and neglect. Leakage in the discharge culverts is particularly prominent. Reservoir water conveyance culverts frequently exhibit cracks, water jetting, honeycombing, pitting, exposed reinforcement, leaks due to ineffective expansion joint sealing, and aging and cracking of the inner concrete surface. These significant hazards pose a serious risk to dam safety.

[0004] To address these issues, numerous methods have been employed in practice, including dam reconstruction, tunnel excavation and pipe laying, pipe jacking behind the dam, and siphon culverts. Each method has its advantages and disadvantages, leading to conflicting opinions. Among these, the internal steel pipe method is widely used due to its economic, rapid, and effective approach to addressing safety hazards in downstream water conveyance culverts. Conventional construction techniques for reinforcing old culverts employ the internal steel pipe grouting method, where a steel pipe is inserted inside the existing culvert, and grout is used to fill the space between the old and new pipes and the gaps around the culvert's perimeter. This method has a short construction period and relatively low investment. However, it often presents challenges such as incomplete grout compaction, poor alignment control, high project investment, and long construction periods. Summary of the Invention

[0005] The purpose of this invention is to provide a positioning and guiding device for a through-pipe, which solves the following technical problems: existing construction methods are often accompanied by major difficulties such as incomplete grouting, poor alignment control, large project investment, and long construction period.

[0006] The objective of this invention can be achieved through the following technical solutions:

[0007] A through-tube positioning and guiding device includes a chassis. A clamping mechanism is fixedly installed on the top of the chassis. The clamping mechanism includes a fixed plate fixedly installed on the chassis. Multiple support rods are evenly installed around the top of the fixed plate. A support plate is fixedly installed on the top of the support rods. Multiple outer arc-shaped clamping blocks are arrayed on the top of the support plate. The outer arc-shaped clamping blocks are slidably connected to the support plate. A movable plate is fixedly installed at the bottom of the outer arc-shaped clamping blocks. The movable plate passes through the support plate and is connected to a push rod. The push rod is fixedly connected to a rack two inside an adjustment box. The adjustment box is fixedly installed at the bottom of the support plate. A gear is rotatably connected inside the adjustment box. Rack two and rack one are cross-arranged at the upper and lower ends of the gear, and rack two and rack one are meshed with the gear.

[0008] A lifting drive mechanism is provided at the center of the fixed plate. A lifting plate is fixedly installed on the lifting drive mechanism. Multiple movable blocks three are installed at equal intervals on the outer circumference of the lifting plate. Movable blocks four are movably connected to the ends of the movable blocks three. Push blocks are movably connected to the ends of the movable blocks four. A vertically arranged push column is movably connected to the top of the push block. The push column is meshed with a rack and pinion.

[0009] As a further aspect of the present invention, a plurality of rubber strips are installed on the outer arc-shaped clamping block.

[0010] As a further embodiment of the present invention: a convex disk is fixedly installed at the bottom center of the support disk, and the movable block four is slidably connected to the bottom of the convex disk.

[0011] As a further embodiment of the present invention: the lifting drive mechanism passes through the support plate and connects to the top plate. The top plate is arranged with multiple movable blocks II. The ends of the movable blocks II are movably connected to movable blocks I. The ends of the movable blocks I are movably connected to an inner arc-shaped clamping block. The bottom of the inner arc-shaped clamping block is slidably connected to the support plate. An arc-shaped rubber plate is fixedly installed on the outer side of the inner arc-shaped clamping block.

[0012] As a further aspect of the present invention: a rubber pad ring is provided between the outer arc-shaped clamping block and the inner arc-shaped clamping block, and a plurality of rubber protrusions are arrayed on the top of the rubber pad ring.

[0013] As a further embodiment of the present invention: the lifting drive mechanism includes a lead screw that passes through a fixed plate, a handwheel is provided at one end of the lead screw, a threaded sleeve is threadedly connected to the other end of the lead screw, a lifting plate is fixedly installed on the outside of the threaded sleeve, and the end of the threaded sleeve passes through a support plate and is rotatably connected to the top plate.

[0014] As a further aspect of the present invention: a clamping ring is provided on the outside of the clamping mechanism and on the chassis, and multiple wheel seats are arranged in an array on the outer peripheral surface of the clamping ring. A sliding groove is provided on the wheel seat, and a spring is fixedly installed in the sliding groove. A bearing is fixedly installed at the bottom of the spring, and a guide wheel is rotatably installed inside the bearing.

[0015] As a further aspect of the present invention: the clamping ring includes two semi-circular clamps, and plug plates are installed on both sides of the clamps. The diameters of the two plug plates are connected by locking bolts.

[0016] The beneficial effects of this invention are:

[0017] When pulling a small-diameter through-tube, the present invention first places the outer arc-shaped clamping block outside the through-tube, then starts the lifting drive mechanism. The lifting drive mechanism pushes the lifting plate up. During the upward movement of the lifting plate, the moving block three moves, which in turn drives the moving block four to move. The moving block four pushes the pushing block to move. The pushing block drives the rack one to move to the left through the pushing column, which in turn drives the gear to rotate. The rotation of the gear drives the rack two to move to the right, which in turn moves to the right through the push rod. Finally, the moving plate drives the outer arc-shaped clamping block to move towards the center, clamping the through-tube.

[0018] When pulling a large-diameter through-tube, it can be placed inside two semi-circular clamps and secured with the clamps. Then, the lifting drive mechanism is activated to lower it, causing the outer arc-shaped clamping block to move outward until it contacts the inner wall of the through-tube. At this point, it can still clamp through-tubes of different diameters from the inside and outside, with good fixation and strong practicality. The inner arc-shaped clamping block will move inward without causing mutual interference. Therefore, this invention can be adjusted at will.

[0019] This invention can improve the construction alignment of the culvert, which is beneficial to the safety control and work efficiency of the construction operation. It can save the investment in grouting the gaps around the culvert, effectively avoid quality problems caused by grouting defects, and avoid affecting the service life of the culvert. It is also beneficial to control the investment in construction costs. The steel pipe positioning and guiding system device can avoid the deflection and settlement deformation of the culvert itself, and has a redundant protection mechanism for the circumferential weld of the culvert itself. This is beneficial to improving the construction progress and positioning accuracy control, and is also beneficial to the later inspection and replacement of the culvert. Attached Figure Description

[0020] The invention will now be further described with reference to the accompanying drawings.

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 This is a top view of the structure of the present invention;

[0023] Figure 3 This is a front view schematic diagram of the clamping mechanism of the present invention;

[0024] Figure 4 This is a front view structural schematic diagram of the lifting plate of the present invention;

[0025] Figure 5 This is an isometric structural schematic diagram of the clamping mechanism of the present invention;

[0026] Figure 6 This is a schematic diagram of the surface structure of the support disk of the present invention;

[0027] Figure 7 This is a schematic diagram of the bottom structure of the support plate of the present invention;

[0028] Figure 8 This is a schematic diagram of the internal structure of the regulating box of the present invention;

[0029] Figure 9 This is a front view structural schematic diagram of the clamping ring of the present invention;

[0030] Figure 10 This is a side view of the wheel seat structure of the present invention.

[0031] In the diagram: 1. Chassis; 2. Clamping mechanism; 3. Guide wheel; 4. Clamping ring; 21. Fixed plate; 22. Support rod; 23. Support plate; 24. Moving plate; 25. Outer arc-shaped clamping block; 26. Rubber strip; 27. Arc-shaped rubber plate; 28. Movable block one; 29. ​​Movable block two; 210. Threaded sleeve; 211. Lifting plate; 212. Push rod; 213. Top plate; 214. Rubber washer ring; 215. Rubber protrusion; 216. Convex plate; 217. Movable block three; 218. Movable block four; 219. Pushing block; 220. Pushing column; 221. Adjusting box; 222. Rack one; 223. Rack two; 224. Gear; 225. Lead screw; 226. Inner arc-shaped clamping block. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] Please see Figures 1-10As shown, this invention is a positioning and guiding device for a through-tube, including a chassis 1. A clamping mechanism 2 is fixedly installed on the top of the chassis 1. The clamping mechanism 2 includes a fixed plate 21 fixedly installed on the chassis 1. Multiple support rods 22 are evenly installed around the top of the fixed plate 21 to provide good support. A support plate 23 is fixedly installed on the top of the support rods 22. Multiple outer arc-shaped clamping blocks 25 are arrayed on the top of the support plate 23, forming a circle. The outer arc-shaped clamping blocks 25 are slidably connected to the support plate 23, facilitating the movement and adjustment of the outer arc-shaped clamping blocks 25. A movable plate 24 is fixedly installed at the bottom of the clamping block 25. A through hole is provided between the movable plate 24 and the support plate 23 to facilitate the movement of the movable plate 24. The movable plate 24 passes through the support plate 23 and is connected to the push rod 212. The push rod 212 is fixedly connected to the rack 223 inside the adjustment box 221. The adjustment box 221 is fixedly installed at the bottom of the support plate 23. A gear 224 is rotatably connected inside the adjustment box 221. A rack 223 and a rack 222 are arranged crosswise at the upper and lower ends of the gear 224, and both rack 223 and rack 222 are meshed with the gear 224.

[0034] A lifting drive mechanism is provided at the center of the fixed disk 21. The lifting drive mechanism can be a cylinder. A lifting disk 211 is fixedly installed on the lifting drive mechanism. Multiple movable blocks 217 are installed at equal intervals on the outer circumference of the lifting disk 211. Movable blocks 218 are movably connected to the ends of the movable blocks 217. Push blocks 219 are movably connected to the ends of the movable blocks 218. A vertically arranged push column 220 is movably connected to the top of the push block 219. The push column 220 is meshed with a rack 222.

[0035] The outer arc-shaped clamping block 25 is placed outside the through-tube, and then the lifting drive mechanism is activated. The lifting drive mechanism pushes the lifting plate 211 to rise. During the rise of the lifting plate 211, the moving block 217 moves. The moving block 217 then moves the moving block 218. The moving block 218 pushes the push block 219 to move. The push block 219 drives the rack 222 to move to the left through the push column 220, which in turn drives the gear 224 to rotate. The rotation of the gear 224 drives the rack 223 to move to the right, which in turn moves to the right through the push rod 212. Then, through the moving plate 24, the outer arc-shaped clamping block 25 moves towards the center to clamp the through-tube. This structure is suitable for through-tubes of different diameters.

[0036] Multiple rubber strips 26 are installed on the outer arc-shaped clamping block 25. The rubber strips 26 can protect the through pipe and improve the clamping effect.

[0037] A convex disk 216 is fixedly installed at the bottom center of the support disk 23, and the movable block 218 is slidably connected to the bottom of the convex disk 216, which facilitates the stable and more stable movement of the movable block 218.

[0038] The lifting drive mechanism passes through the support plate 23 and connects to the top plate 213. The top plate 213 is arranged with multiple movable blocks 29. The end of each movable block 29 is movably connected to a movable block 28. The end of each movable block 28 is movably connected to an inner arc-shaped clamping block 226. The bottom of the inner arc-shaped clamping block 226 is slidably connected to the support plate 23. An arc-shaped rubber plate 27 is fixedly installed on the outside of the inner arc-shaped clamping block 226. Multiple arc-shaped rubber plates 27 form a circle.

[0039] During the lifting drive mechanism's ascent, the top plate 213 is driven to rise, which in turn pushes the second movable block 29 to move. The second movable block 29 drives the first movable block 28 to move, and the first movable block 28 drives the inner arc-shaped clamping block 226 to slide, thereby causing it to come into contact with the inner wall of the through pipe. Thus, this structure can clamp through pipes of different diameters from both the inner and outer walls at the same time, resulting in better clamping effect, greater applicability, and prevention of deformation of the through pipe.

[0040] A rubber pad ring 214 is provided between the outer arc-shaped clamping block 25 and the inner arc-shaped clamping block 226. Multiple rubber protrusions 215 are arrayed on the top of the rubber pad ring 214. The rubber pad ring 214 and the rubber protrusions 215 facilitate the support of the end of the through pipe and avoid damage to the end of the through pipe.

[0041] The lifting drive mechanism includes a lead screw 225 that passes through a fixed plate 21. One end of the lead screw 225 is equipped with a handwheel, and the other end is threadedly connected to a threaded sleeve 210. A lifting plate 211 is fixedly mounted on the outside of the threaded sleeve 210. The end of the threaded sleeve 210 passes through a support plate 23 and is rotatably connected to a top plate 213. Rotating the handwheel drives the lead screw 225 to rotate, which in turn drives the threaded sleeve 210 to rise or fall. This manual operation is chosen because the equipment is primarily intended for outdoor use, making it easier for workers to operate.

[0042] A clamping ring 4 is provided on the outside of the clamping mechanism 2 and on the chassis 1. Multiple guide wheels 3 are arrayed on the outer circumference of the clamping ring 4. The guide wheels 3 are mounted on wheel seats 44 on the clamping ring 4, facilitating the horizontal movement of the through-tube by the guiding device. A sliding groove 441 is provided on the wheel seat 44, and a spring 442 is fixedly installed within the sliding groove 441. A bearing 443 is fixedly installed at the bottom of the spring 442, and the guide wheel 3 is rotatably mounted inside the bearing 443. Through this structure, when the guide wheel 3 encounters a protrusion inside the concrete culvert, it can automatically extend and retract to its original position, facilitating its movement.

[0043] The clamp 4 includes two semi-circular clamps 41, which are slidably connected to the chassis 1 for easy movement and adjustment. Each clamp 41 has a connector plate 42 installed on both sides for easier assembly; pre-treatment can be performed before installation and then tightening. The two connector plates 42 are connected by locking bolts 43 to secure the two clamps 41.

[0044] For larger diameter through-pipes, they can be placed inside two semi-circular clamps 41 and fixed by the two clamps 41. Then, the lifting drive mechanism is activated to lower the pipe, causing the outer arc-shaped clamping block 25 to move outward until it contacts the inner wall of the through-pipe. At this time, through-pipes of different diameters can still be clamped from the inside and outside, with good fixing effect and strong practicality. The inner arc-shaped clamping block 226 will move inward and will not cause mutual interference.

[0045] The working principle of this invention is as follows: When pulling a small-diameter through-tube, the outer arc-shaped clamping block 25 is first placed outside the through-tube. Then, the lifting drive mechanism is activated, which pushes the lifting plate 211 to rise. During the rise of the lifting plate 211, the movable block 217 moves. The movable block 217 then moves the movable block 218. The movable block 218 pushes the push block 219 to move. The push block 219 drives the rack 222 to move to the left through the push column 220, which in turn drives the gear 224 to rotate. The rotation of the gear 224 drives the rack 223 to move to the right, which in turn moves to the right through the push rod 212. Then, the moving plate 24 drives the outer arc-shaped clamping block 25 to move towards the center, thus clamping the through-tube.

[0046] The steel wire rope is then fixed to the through pipe, and a winch is used to pull the through pipe. The top of the through pipe is finished by creating a 20cm long bevel at a 15° inward angle. This design avoids difficulties in traction and jacking caused by unevenness inside the original concrete culvert, reduces the risk of wear between the traction steel wire rope and the concrete culvert, and improves the efficiency of the through pipe traction construction.

[0047] When pulling a large-diameter through pipe, it can be placed inside two semi-circular clamps 41 and fixed by the two clamps 41. Then, the lifting drive mechanism is activated to lower it, causing the outer arc-shaped clamping block 25 to move outward until it contacts the inner wall of the through pipe. At this time, it can still clamp through pipes of different diameters from the inside and outside, with good fixing effect and strong practicality. The inner arc-shaped clamping block 226 will move inward and will not cause mutual interference.

[0048] The foregoing has provided a detailed description of one embodiment of the present invention, but this description is merely a preferred embodiment and should not be construed as limiting the scope of the invention. All equivalent variations and modifications made within the scope of the claims of this invention should still fall within the patent coverage of this invention.

Claims

1. A positioning and guiding device for a through-pipe, characterized in that, The system includes a chassis (1), on the top of which a clamping mechanism (2) is fixedly mounted. The clamping mechanism (2) includes a fixed disk (21) fixedly mounted on the chassis (1). Multiple support rods (22) are evenly mounted around the top of the fixed disk (21). A support disk (23) is fixedly mounted on the top of each support rod (22). Multiple outer arc-shaped clamping blocks (25) are arrayed on the top of the support disk (23). The outer arc-shaped clamping blocks (25) are slidably connected to the support disk (23). A clamping mechanism (25) is fixedly mounted on the bottom of each outer arc-shaped clamping block (25). A movable plate (24) is connected to a push rod (212) through a support plate (23). The push rod (212) is fixedly connected to a rack two (223) inside an adjustment box (221). The adjustment box (221) is fixedly installed at the bottom of the support plate (23). A gear (224) is rotatably connected inside the adjustment box (221). A rack two (223) and a rack one (222) are cross-arranged at the upper and lower ends of the gear (224), and both rack two (223) and rack one (222) are meshed with the gear (224). A lifting drive mechanism is provided at the center of the fixed disk (21), and a lifting disk (211) is fixedly installed on the lifting drive mechanism. Multiple movable blocks three (217) are installed at equal intervals on the outer circumference of the lifting disk (211). Movable blocks four (218) are movably connected to the end of the movable blocks three (217). Push blocks (219) are movably connected to the end of the movable blocks four (218). A vertically arranged push column (220) is movably connected to the top of the push block (219). The push column (220) is meshed with a rack one (222). The lifting drive mechanism passes through the support plate (23) and connects to the top plate (213). The top plate (213) is arranged with multiple movable blocks two (29) in an array. The end of the movable block two (29) is movably connected to the movable block one (28). The end of the movable block one (28) is movably connected to the inner arc-shaped clamping block (226). The bottom of the inner arc-shaped clamping block (226) is slidably connected to the support plate (23). An arc-shaped rubber plate (27) is fixedly installed on the outer side of the inner arc-shaped clamping block (226). A clamping ring (4) is provided on the outside of the clamping mechanism (2) and on the chassis (1). Multiple wheel seats (44) are arranged on the outer circumferential surface of the clamping ring (4). A sliding groove (441) is provided on the wheel seat (44). A spring (442) is fixedly installed in the sliding groove (441). A bearing (443) is fixedly installed at the bottom of the spring (442). A guide wheel (3) is rotatably installed inside the bearing (443).

2. The positioning and guiding device for a through-pipe according to claim 1, characterized in that, Multiple rubber strips (26) are installed on the outer arc-shaped clamping block (25).

3. The positioning and guiding device for a through-pipe according to claim 1, characterized in that, A convex disk (216) is fixedly installed at the bottom center of the support disk (23), and the movable block four (218) is slidably connected to the bottom of the convex disk (216).

4. The positioning and guiding device for a through-pipe according to claim 1, characterized in that, A rubber pad ring (214) is provided between the outer arc-shaped clamping block (25) and the inner arc-shaped clamping block (226), and a plurality of rubber protrusions (215) are arranged on the top of the rubber pad ring (214).

5. A positioning and guiding device for a through-pipe according to claim 1, characterized in that, The lifting drive mechanism includes a lead screw (225) that passes through a fixed plate (21). One end of the lead screw (225) is provided with a handwheel, and the other end of the lead screw (225) is threadedly connected to a threaded sleeve (210). A lifting plate (211) is fixedly installed on the outside of the threaded sleeve (210). The end of the threaded sleeve (210) passes through a support plate (23) and is rotatably connected to a top plate (213).

6. A positioning and guiding device for a through-pipe according to claim 1, characterized in that, The clamping ring (4) includes two semi-circular clamps (41), and plug plates (42) are installed on both sides of the clamps (41). The diameters of the two plug plates (42) are connected by locking bolts (43).

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