CN114589216B - Pipeline inner wall expansion equipment for non-excavation repair of municipal drainage pipe - Google Patents
Pipeline inner wall expansion equipment for non-excavation repair of municipal drainage pipe Download PDFInfo
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- CN114589216B CN114589216B CN202210233366.8A CN202210233366A CN114589216B CN 114589216 B CN114589216 B CN 114589216B CN 202210233366 A CN202210233366 A CN 202210233366A CN 114589216 B CN114589216 B CN 114589216B
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- 238000009412 basement excavation Methods 0.000 title claims abstract description 13
- 230000008439 repair process Effects 0.000 title abstract description 21
- 230000007246 mechanism Effects 0.000 claims abstract description 85
- 230000000750 progressive effect Effects 0.000 claims abstract description 40
- 230000002457 bidirectional effect Effects 0.000 claims abstract description 31
- 210000001503 joint Anatomy 0.000 claims abstract description 4
- 239000007787 solid Substances 0.000 claims abstract description 4
- 230000005540 biological transmission Effects 0.000 claims description 8
- 230000033001 locomotion Effects 0.000 claims description 6
- 238000005086 pumping Methods 0.000 claims description 5
- 230000002441 reversible effect Effects 0.000 claims description 2
- 238000005096 rolling process Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 7
- 230000009471 action Effects 0.000 description 9
- 238000010276 construction Methods 0.000 description 6
- 230000001429 stepping effect Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000011065 in-situ storage Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 210000002445 nipple Anatomy 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 230000004323 axial length Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000009440 infrastructure construction Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D3/00—Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts
- B21D3/14—Recontouring
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F3/00—Sewer pipe-line systems
- E03F3/04—Pipes or fittings specially adapted to sewers
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/60—Planning or developing urban green infrastructure
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- Life Sciences & Earth Sciences (AREA)
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Abstract
The invention belongs to the technical field of municipal engineering facilities and equipment, and provides pipeline inner wall expansion equipment for non-excavation repair of municipal drainage pipes, which comprises a progressive supporting system, wherein the progressive supporting system comprises two linear progressive mechanisms which are in front-back butt joint, telescopic radial supporting mechanisms are arranged on the linear progressive mechanisms, a power system is arranged at the front end of the progressive supporting system, the power system comprises a rotary power mechanism and a hydraulic power mechanism, a rotary expansion system is arranged at the power output end of the hydraulic power mechanism, the rotary expansion system comprises a bidirectional oil cylinder, a rotary expander and a limiting mechanism, the rotary expansion mechanism comprises a first expansion ring and a second expansion ring which are connected with the bidirectional oil cylinder, a movable centering system is arranged at the front side of the rotary expansion system, the movable centering system comprises a centering pipe, and the end part of the centering pipe is sleeved with a solid shaft arranged in the center of the rotary expansion system. The invention has reasonable design, strong maneuverability, good dynamic loading effect, strong repairing capability and high utilization rate.
Description
Technical Field
The invention belongs to the technical field of municipal engineering facilities and equipment, and particularly relates to pipeline inner wall expansion equipment for non-excavation repair of municipal drainage pipes.
Background
Municipal infrastructure refers to various buildings, structures, equipment, etc. which are arranged in the planning construction range of urban areas and towns (villages), and provide paid or gratuitous public products and services for residents based on government responsibility and obligations. Various public infrastructure constructions matched with urban life belong to the category of municipal engineering, wherein an urban drainage pipe network is an important municipal infrastructure. The drain pipe is the important pipeline of discharging production sewage, domestic sewage, however municipal drain pipe in the use, and the extrusion of municipal road easily causes municipal drain pipe to appear the local position condition of collapsing and warp. In order to repair the collapse position of municipal drainage pipes, the drainage pipes made of certain elastic materials can be expanded and repaired by using specific construction equipment.
At present, the equipment for expanding and repairing the drain pipe is generally in a non-excavation construction form, and the construction form can meet the current road traffic flow requirement, and particularly ensures the normal running efficiency of cities. When the existing municipal drain pipe expansion equipment is used for expansion repair, a mode of in-situ radial loading is mostly adopted, namely after construction equipment enters a deformation position of a pipeline to be repaired, radial pressure is applied to the deformation position to enable the construction equipment to recover. However, as the loading end of the direct contact pipeline is in point contact and then gradually becomes in surface contact in the repairing process, the in-situ radial loading mode has a good repairing effect on radial ridge deformation, but the repairing effect on irregular distortion such as obvious deformation of eccentric trend is poor, the probability of collapse again after repairing is high, simultaneously, the effect in the loading process is easy to cause unrecoverable damage to the equipment, and the comprehensive utilization rate of the equipment is reduced.
Disclosure of Invention
Aiming at the technical problems of the pipeline inner wall expansion equipment, the invention provides the pipeline inner wall expansion equipment for non-excavation repair of the municipal drainage pipe, which has the advantages of reasonable design, strong maneuverability, good dynamic loading effect, strong repair capability and high utilization rate.
In order to achieve the above purpose, the technical scheme adopted by the invention is that the pipeline inner wall expansion device for non-excavation repairing of municipal drain pipe comprises a progressive supporting system, wherein the progressive supporting system comprises two linear progressive mechanisms which are in front-back butt joint, the linear progressive mechanisms are respectively provided with a telescopic radial supporting mechanism, the front ends of the progressive supporting systems are provided with power systems, the power systems comprise a rotary power mechanism and a hydraulic power mechanism, the hydraulic power mechanism comprises an oil tank and an oil pump, a pump oil pipe orifice of the oil pump is provided with a rotary joint, the other end of the rotary joint is provided with a pump oil shaft in transmission connection with the rotary power mechanism, one end of the pump oil shaft, far away from the hydraulic power mechanism, is provided with a rotary expansion system, the rotary expansion system comprises a bidirectional oil cylinder connected with the pump oil shaft, the bidirectional oil cylinder comprises a plurality of bidirectional piston rods and is perpendicular to the linear movement direction of the rotary expansion system, the bidirectional piston rods are respectively arranged on the inner sides of the rotary expansion mechanisms, the rotary expansion mechanisms comprise a first expansion ring and a second expansion ring which are reversely movably buckled, the inner wall of the first expansion ring and the second expansion ring is arranged on the inner wall of the centering system, the inner wall of the centering system is connected with the centering system in a sleeved mode, the inner wall of the centering system is arranged on the inner wall of the centering system is in a sleeved mode, the centering system is used for limiting the inner wall of the centering system, and the centering system is arranged on the inner wall of the centering system, and the centering system is in a matched with the inner wall of the centering system, and the centering system is arranged on the side of the centering system, and the centering system is used for limiting the inner centering system, and the centering system and the inner centering system and the pipe, and the pipe is used in the pipe.
Preferably, the linear progressive mechanism comprises a cylindrical frame, a hydraulic connector is arranged at the shaft end of the cylindrical frame and communicated with an oil tank through an oil pipe, a plurality of pairs of traveling wheels distributed in a circular array are arranged on the cylindrical surface of the cylindrical frame, and each pair of traveling wheels comprises two traveling wheels which are axially arranged and the wheel surfaces of the traveling wheels face to the inner wall of a pipeline to be repaired.
Preferably, the telescopic radial supporting mechanism comprises a distributed oil cylinder arranged in the cylindrical frame, the distributed oil cylinder comprises a cylinder body, one end of the cylinder body is connected with a hydraulic connector, the hydraulic connector comprises two concentric piston rods sleeved with each other, the end part of one concentric piston rod is fixedly connected with the end part of the distributed oil cylinder, the center of the cylinder body is provided with a central oil cavity movably matched with the other concentric piston rod, the side wall of the cylinder body is provided with a plurality of distributed oil cavity groups distributed in a circular array and an oil return pipeline communicated with the distributed oil cavity groups, each distributed oil cavity group comprises a plurality of sub oil cavities distributed along the length direction of the cylinder body, radial piston rods are arranged in the sub oil cavities, and supporting blocks are arranged at the end parts of the radial piston rods and are in contact fit with the inner wall of a drain pipe to be repaired.
Preferably, the oil return pipeline comprises a plurality of main oil return pipes communicated with the oil tank, a plurality of sub oil return pipes distributed along the length direction of the main oil return pipes are arranged on the main oil return pipes, and oil nozzles communicated with adjacent sub oil cavities are arranged on the sub oil return pipes.
Preferably, the rotary power mechanism comprises a gear motor, wherein a gear set is arranged at the power output end of the gear motor, and the gear set is connected with the oil pumping shaft through a key.
Preferably, the inside of pump oil axle is provided with oil inlet and oil return hole parallel and the centre-to-centre spacing different with its axial lead, rotary joint's inside is provided with oil inlet passageway and oil return passageway complex first annular oil duct and second annular oil duct, first annular oil duct and second annular oil duct are connected to the oil inlet and the oil return mouth of oil pump respectively through the hose.
Preferably, the bidirectional piston rod comprises a rod body, a piston body is arranged in the middle of the rod body, an oil inlet chamber and an oil return chamber are respectively arranged on two sides of the piston body, and the oil inlet chamber and the oil return chamber are respectively communicated with the oil inlet hole and the oil return hole.
Preferably, the first expanding ring and the second expanding ring comprise ring bodies, an arc sinking groove is formed in one side, facing the other ring body, of each ring body, the sinking groove is matched with a protruding portion of the other ring body, a pair of transverse bar holes which are vertically symmetrically distributed are formed in the ring body of the first expanding ring, guide bolts which are movably matched with the transverse bar holes are arranged on the ring body of the second expanding ring, and the inner wall of the first expanding ring and the inner wall of the second expanding ring are respectively connected with different bidirectional piston rods.
Preferably, the limiting mechanism comprises two check rings distributed on the inner walls of the first pressure expansion ring and the second pressure expansion ring, cam plates are arranged on two sides, away from the circular body, of the two check rings, the cam plates are matched with annular grooves formed in the end face of the circular body, flange pieces are arranged at the centers of the cam plates and the check rings, each flange piece comprises a cylinder body, through holes matched with a bidirectional piston rod are formed in the side wall of each cylinder body, and flange plates are arranged at the end parts of the cylinder bodies.
Preferably, the movable centering system comprises a driven walking frame, driven wheels matched with the inner wall of the drain pipe to be repaired are arranged on the driven walking frame, a driving walking frame is arranged on one side, far away from the spin-expanding system, of the driven walking frame, driven wheels matched with the inner wall of the drain pipe to be repaired and steering gears in transmission connection with each driven wheel are arranged on the driving walking frame, and transverse bridges are directly arranged on the driving walking frame and the driven walking frames.
Compared with the prior art, the invention has the advantages and positive effects that:
1. According to the pipeline inner wall expanding device for the municipal drain pipe trenchless repairing, the progressive supporting system is utilized to move the rotary expanding system towards the drain pipe area to be repaired in a gradual pushing mode, the rotary expanding system can be gradually stretched under the action of the power system and repair the deformation area in a rotary expanding mode, meanwhile, the moving centering system limits the rotating center of the rotary expanding system which is gradually pushed, the dynamic loading effect is good, and therefore higher rotary expanding quality can be obtained, and the actual service life of the whole device is prolonged.
2. The pipeline inner wall expansion device for the trenchless repairing of the municipal drainage pipe, provided by the invention, has the advantages that the progressive support system, the power system, the rotary expansion system and the movable centering system are detachably connected at the designed connecting positions, so that the requirement of the trenchless repairing pipeline can be met, the pipeline expansion device can be effectively adapted to an underground drainage pipeline, the operability is better, the maneuverability is strong, the repairing efficiency is higher, the comprehensive utilization rate is higher, and the pipeline expansion device is suitable for large-scale popularization.
3. According to the pipeline inner wall expansion device for non-excavation repair of municipal drain pipes, two diffusion rings of the rotation expansion mechanism in the rotation expansion system can obtain the expansion diameter matched with a pipeline to be repaired after being driven by the bidirectional oil cylinder, the actual expansion diameter can be gradually expanded until the pipeline is completely repaired, and the rotation expansion system has the actions of rotation and stepping, so that the rotation expansion can be realized in a surface-to-surface contact mode in each repair section, and the drain pipeline to be repaired can obtain higher repair quality.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is an isometric view of a pipeline inner wall expansion device for trenchless rehabilitation of municipal drainage pipes in an embodiment;
FIG. 2 is an isometric view of a linear progressive mechanism, a power system, and a spin-expansion system provided by an embodiment;
FIG. 3 is an enlarged schematic view of the structure A of FIG. 2 provided in an embodiment;
FIG. 4 is an isometric view of a linear progressive mechanism, a gear motor, an oil tank, and a spin-on system provided in an embodiment;
FIG. 5 is a schematic view of the internal structure of a hydraulic connector according to an embodiment;
FIG. 6 is an exploded view of a spin-on system according to an embodiment;
FIG. 7 is an isometric view of a spin-on system according to an embodiment in a non-operational state;
FIG. 8 is a working isometric view of a spin-on system provided by an embodiment;
FIG. 9 is an isometric view of a first expander ring provided in an embodiment;
FIG. 10 is an isometric view of a second expander ring provided in an embodiment;
FIG. 11 is an isometric view of a bi-directional cylinder provided by an embodiment;
FIG. 12 is a working cross-sectional view of a rotary joint and pump oil shaft provided in an embodiment;
In the above figures:
1. A progressive support system; 11. a linear progressive mechanism; 111. a barrel-type frame; 112. a hydraulic connector; 1121. a concentric piston rod; 113. a walking wheel; 12. a telescopic radial support mechanism; 121. a distributed oil cylinder; 1211. a cylinder; 1212. a central oil chamber; 1213. a distributed oil chamber group; 1214. an oil-receiving cavity; 122. a radial piston rod; 123. a support block; 124. an oil return pipeline; 1241. a main oil return pipe; 1242. a sub oil return pipe; 1243. a nipple;
2. A power system; 21. a rotary power mechanism; 211. a speed reducing motor; 212. a gear set; 22. a hydraulic power mechanism; 221. an oil tank; 222. an oil pumping shaft; 2221. an oil inlet hole; 2222. an oil return hole; 223. a rotary joint; 2231. a first annular oil passage; 2232. a second annular oil passage;
3. A spin-expanding system; 31. a bidirectional oil cylinder; 311. a bidirectional piston rod; 3111. a rod body; 3112. a piston body; 32. a spin-expanding mechanism; 32a, a first expansion ring; 32b, a second expansion ring; 321. a ring body; 322. sinking grooves; 323. a cross bar hole; 324. an annular groove; 324. a guide bolt; 33. a limiting mechanism; 331. a retainer ring; 332. a cam plate; 333. a flange member; 3331. a cylinder; 3332. a flange plate; 3333. a through hole; 34. a solid shaft;
4. a mobile centering system; 41. centering the tube; 42. a driven walking frame; 43. an active walking frame; 44. steering engine; 45. and a transverse bridge.
Detailed Description
In order that the above objects, features and advantages of the application will be more clearly understood, a further description of the application will be rendered by reference to the appended drawings and examples. It should be noted that, without conflict, the embodiments of the present application and features in the embodiments may be combined with each other. For convenience of description, the words "upper", "lower", "left" and "right" are merely used herein to denote a correspondence with the upper, lower, left, and right directions of the drawing figures, and are not limiting on the structure.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced otherwise than as described herein, and therefore the present invention is not limited to the specific embodiments of the disclosure that follow.
As shown in fig. 1, 6, 7 and 8, the pipeline inner wall expanding device for non-excavation repairing of municipal drain pipe provided by the invention comprises a progressive supporting system 1, wherein the progressive supporting system 1 comprises two linear progressive mechanisms 11 which are in front-back butt joint, the linear progressive mechanisms 11 are respectively provided with a telescopic radial supporting mechanism 12, the front end of the progressive supporting system 1 is provided with a power system 2, the power system 2 comprises a rotary power mechanism 21 and a hydraulic power mechanism 22, the hydraulic power mechanism 22 comprises an oil tank 221 and an oil pump, an oil pump nozzle of the oil pump is provided with a rotary joint 223, the other end of the rotary joint 223 is provided with an oil pump shaft 222 in transmission connection with the rotary power mechanism 21, one end of the oil pump shaft 222, which is far away from the hydraulic power mechanism 22, is provided with a rotary expanding system 3, the rotary expanding system 3 comprises a bidirectional oil cylinder 31 connected with the oil pump shaft 222, the bidirectional cylinder 31 comprises a plurality of bidirectional piston rods 311 and is perpendicular to the linear movement direction of the rotary expansion system 3, the plurality of bidirectional piston rods 311 are radially arranged on the inner side of the rotary expansion mechanism 32, the rotary expansion mechanism 32 comprises a first expansion ring 32a and a second expansion ring 32b which are movably buckled in a reverse direction, the inner walls of the first expansion ring 32a and the second expansion ring 32b are connected with the bidirectional cylinder 31, the center of the rotary expansion mechanism 32 is provided with a limiting mechanism 33 used for limiting the axial transmission of the two, the front side of the rotary expansion system 3 is provided with a movable centering system 4, the outer side of the movable centering system 4 is used for being in rolling fit with the inner wall of a drain pipe to be repaired, the movable centering system 4 comprises a centering pipe 41 arranged towards one side of the rotary expansion system 3, and the end part of the centering pipe 41 is sleeved with a solid shaft 34 arranged in the center of the rotary expansion system 3.
In the device, a linear progressive mechanism 11 in the progressive support system 1 can linearly move along the inner wall of a pipeline to be repaired, and the basis of the movement is that a telescopic radial support mechanism 12 on the other linear progressive mechanism 11 is supported at the position of the telescopic radial support mechanism, and the linear progressive mechanism 11 which needs to move linearly advances or withdraws under the action of self power. When the forward spin-expansion is needed, the linear progressive mechanism 11 drives the spin-expansion system 3 to move towards the area to be repaired until the end part of the spin-expansion system 3 reaches the initial end of the repair; the rotary power mechanism 21 of the power system 2 drives the oil pumping shaft 222 to drive the rotary expansion system 3 to rotate, and the oil pressure of the rotary expansion system 3 is provided by the hydraulic power mechanism 22. The first expansion ring 32a and the second expansion ring 32b of the rotary expansion system 3 can obtain expansion matched with the area of the pipeline to be repaired after being driven by the bidirectional oil cylinder 31, the actual expansion can be gradually increased, the expansion is increased while the rotary expansion is performed until the pipeline is completely repaired, the rotary expansion system 3 has rotary and stepping actions, the area to be repaired is divided into a plurality of continuous repair sections, and each repair section can be in surface-to-surface contact with the first expansion ring 32a and the second expansion ring 32b, so that the drainage pipeline to be repaired obtains higher repair quality, and the actual service life of the oil pumping shaft 222 is prolonged. The gradual supporting system 1 moves the spiral expansion system 3 towards the drain pipe area to be repaired in a gradual pushing mode, the spiral expansion system 3 can gradually stretch under the action of the power system 2 and repair the deformed area repairing section gradually in a spiral expansion mode, and meanwhile, the moving centering system 4 limits the rotating center of the gradual pushing spiral expansion system 3, so that the spiral expansion system 3 has a good dynamic loading effect in the continuous repairing process, the spiral expansion quality of the device is further improved, and the pipeline repairing efficiency is improved.
Further, progressive braced system 1, driving system 2, revolve expand system 3 and remove centering system 4 in this device can dismantle the connection on the hookup location of design, can satisfy the needs of non-excavation repair pipeline, can effectively adapt to underground drainage pipeline moreover, and maneuverability is better, the mobility is strong, repair efficiency is higher and the comprehensive utilization rate is higher.
As shown in fig. 2,3 and 4, in order to improve the stepping capability of the linear progressive mechanism 11, the linear progressive mechanism 11 provided by the invention comprises a cylindrical frame 111, the shaft end of the cylindrical frame 111 is provided with a hydraulic connector 112, the hydraulic connector 112 is communicated with an oil tank 221 through an oil pipe, the cylindrical surface of the cylindrical frame 111 is provided with a plurality of pairs of walking wheels 113 distributed in a circular array, each pair of walking wheels 113 comprises two walking wheels 113 which are axially arranged, and the wheel surface of each walking wheel 113 faces the inner wall of a pipeline to be repaired. The cylinder 111 serves, on the one hand, as a step basis for the power system 2 and the rotary expansion system 3 and, at the same time, as a mounting basis for the telescopic radial support mechanism 12. The cylinder diameter of the cylinder 111 is smaller than the diameter of the pipeline, and the movable cylinder 111 is driven to linearly move by the hydraulic connector 112. The main function of the travelling wheels 113 is to ensure that the cylindrical frame 111 can enter the interior of the pipe along the wall of the pipe, so that the difficulty of workers in installing the device into the pipe is reduced; in the whole progressive process, the travelling wheel 113 is in an overhead state because the telescopic radial supporting mechanism 12 on the other linear progressive mechanism 11 needs to be in a stretched supporting state.
As shown in fig. 2,3 and 5, in order to improve the support stability of the progressive support system 1, the telescopic radial support mechanism 12 provided by the invention comprises a distributed cylinder 121 arranged inside a cylindrical frame 111, the distributed cylinder 121 comprises a cylinder body 1211, one end of the cylinder body 1211 is connected with a hydraulic connector 112, the hydraulic connector 112 comprises two sleeved concentric piston rods 1121, one concentric piston rod 1121 is an outer concentric piston rod driving the cylinder body 1211, the end of the outer concentric piston rod is fixedly connected with the end of the distributed cylinder 121, the other concentric piston rod 1121 is an inner concentric piston rod, the inner concentric piston rod is movably matched with a central oil cavity 1212 arranged in the center of the cylinder body 1211, the inner cavity of the outer concentric piston rod and the central cylinder form two chambers which are relatively independent and can exert pressure balance functions on the two ends of the inner concentric piston rod, and the chamber positioned at the rear side of the inner concentric piston rod is provided with an independent oil pipe interface. Further, a plurality of distributed oil cavity groups 1213 distributed in a circular array and an oil return pipeline 124 communicated with the distributed oil cavity groups 1213 are arranged on the side wall of the cylinder 1211, the distributed oil cavity groups 1213 comprise a plurality of sub-oil cavities distributed along the length direction of the cylinder 1211, radial piston rods 122 are arranged in the sub-oil cavities, supporting blocks 123 are arranged at the end parts of the radial piston rods 122, and the supporting blocks 123 are used for being in contact fit with the inner wall of a drain pipe to be repaired. The central oil chamber 1212 and the sub-oil chamber of the cylinder 1211 serve as main oil chambers that drive the radial piston rod 122 to move, and the oil pressure inside thereof is supplied from the oil tank 221 of the power system 2. The radial piston rod 122 can realize radial telescopic action by controlling the oil pressure of the central oil cavity 1212 and the oil pressure of the sub oil cavity, thereby meeting the requirements of supporting and pressure relief, and enabling the linear progressive mechanism 11 to reasonably advance or back in the pipeline.
Further, for the telescopic radial support mechanism 12, the designed working cross-sectional area of the central oil chamber 1212 is adjustable, such as the end diameter of the inner concentric piston rod is smaller than the diameter of the central oil chamber 1212, while its different extension in the central oil chamber 1212 may change the actual volume of the central oil chamber 1212 but each distributed oil chamber set 1213 still has a feed oil passage therethrough. In this way, the extending length of the inner concentric piston rod in the central oil chamber 1212 can be adjusted by controlling the oil pressure ratio of the rear side of the inner concentric piston rod to the front side thereof, thereby achieving the purpose of adjusting the telescopic action efficiency of the distributed oil cylinder 121 and further improving the stepping efficiency of the device.
Still further, the oil return line 124 includes a plurality of main oil return pipes 1241 communicating with the oil tank 221, a plurality of sub oil return pipes 1242 distributed along the length direction of the main oil return pipes 1241 are provided on the main oil return pipes 1241, and a nipple 1243 communicating with an adjacent sub oil chamber is provided on the sub oil return pipes 1242. The main oil return pipe 1241 can simultaneously supply oil or pump oil to the plurality of sub oil return pipes 1242, so that the main oil return pipe 1241 can be matched with the supply end of the oil pressure in the central oil cavity 1212, and the requirement of simultaneous telescopic action of the plurality of radial piston rods 122 and the supporting blocks 123 can be met. Meanwhile, structural grooves matched with the main oil return pipe 1241, the sub oil return pipes 1242 and the oil nozzle 1243 are further formed in the cylinder 1211, so that pipelines of equipment are simplified, and overall arrangement of the oil return pipeline 124 in the cylinder frame 111 is improved.
As shown in fig. 4 and 7, in order to improve the utilization rate of the rotary power mechanism 21, the rotary power mechanism 21 provided by the invention comprises a gear motor 211, wherein a gear set 212 is arranged at the power output end of the gear motor 211, and one gear in the gear set 212 is connected with a pump oil shaft 222 through a key.
As shown in fig. 7 and 12, in consideration of the requirement of the rotation action of the swirl system 3, in order to improve the oil pressure supply stability of the swirl system 3, the present invention is provided with an oil inlet port 2221 and an oil return port 2222 which are parallel to the axis line thereof and have different center distances inside the pump oil shaft 222, and a first annular oil passage 2231 and a second annular oil passage 2232 which are matched with the oil inlet passage and the oil return passage are provided inside the rotary joint 223, and the first annular oil passage 2231 and the second annular oil passage 2232 are connected to an oil inlet port and an oil return port of the oil pump through hoses, respectively. In this way, the pump oil shaft 222 can be always kept in a rotational relationship with the rotary joint 223 by the drive of the rotary power mechanism 21, and a continuous and effective oil intake path and oil return path with the oil tank 221 are established. The pump oil shaft 222 and the rotary joint 223 are ingenious in design, strong in practicality and high in utilization rate.
As shown in fig. 11, in order to improve the driving efficiency of the rotation and expansion mechanism 32, the bidirectional piston rod 311 provided by the present invention includes a rod body 3111, a piston body 3112 is disposed in the middle of the rod body 3111, and two sides of the piston body 3112 are respectively an oil inlet chamber and an oil return chamber, where the oil inlet chamber and the oil return chamber are respectively communicated with the oil inlet hole 2221 and the oil return hole 2222. Wherein, the rod body 3111 controlling different expansion rings moves in opposite directions, and at the same time, the oil inlet chambers and the oil return chambers are distributed in opposite positions, the oil inlet path of the oil pump shaft 222 can simultaneously control the oil inlet chambers of the two bidirectional piston rods 311 and make the rod body 3111 move reversely, so that the diameter of the rotary expansion mechanism 32 is expanded, the oil return path of the oil shaft can simultaneously control the oil return chambers of the two bidirectional piston rods 311 and make the rod body 3111 move reversely, so that the rotary expansion mechanism 32 is retracted,
As shown in fig. 6-10, in order to improve the working performance of the rotary expansion mechanism 32, the first expansion ring 32a and the second expansion ring 32b provided by the invention both comprise a circular body 321, one side of the circular body 321 facing the other circular body 321 is provided with an arc-shaped sinking groove 322, the sinking groove 322 is matched with a protruding part of the other circular body 321, the circular body of the first expansion ring 32a is provided with a pair of transverse bar holes 323 which are vertically and symmetrically distributed, the circular body of the second expansion ring 32b is provided with guide bolts 324 which are movably matched with the transverse bar holes 323, and the inner wall of the first expansion ring 32a and the inner wall of the second expansion ring 32b are respectively connected with different bidirectional piston rods 311. In this way, when the bidirectional cylinder 31 drives two expansion rings, the expansion rings can translate along the surfaces of the sinking grooves 322 of the two expansion rings under the guiding action of the guide bolts 324 and the transverse bar holes 323, and the sinking grooves 322 are designed to improve the space utilization rate of the rotary expansion mechanism 32 on one hand, reduce the axial volume of the rotary expansion mechanism 32 on the other hand, shorten the unit length of the repairing section, and facilitate improving the repairing quality.
As shown in fig. 1, 6 and 9, in order to improve the anti-falling performance of the first expansion ring 32a and the second expansion ring 32b, the limiting mechanism 33 provided by the invention comprises two check rings 331 distributed on the inner walls of the first expansion ring 32a and the second expansion ring 32b, two sides of the two check rings 331 far away from the circular body 321 are respectively provided with a cam plate 332, the cam plates 332 are matched with annular grooves 324 arranged on the end face of the circular body 321, the centers of the cam plates 332 and the check rings 331 are provided with flange parts 333, the flange parts 333 comprise a cylinder 3331, through holes 3333 matched with the bidirectional piston rods 311 are arranged on the side walls of the cylinder 3331, and the end parts of the cylinder 3331 are provided with flange plates 3332. Wherein the radial expansion moving direction of the circular body 321 is consistent with the distal direction of the cam plate 332; the retainer ring 331 is used as a surface-increasing structure of the inner wall of the circular body 321, the contact area between the retainer ring 331 and the cam plate 332 is increased, the proximal end and the distal end of the cam plate 332 can be guaranteed to be completely blocked at the front side of the retainer plate, but the minimum circle diameter of the retainer ring 331 reserves enough movement space for radial expansion of the circular body 321, so that the axial lengths of the first expansion ring 32a and the second expansion ring 32b are effectively limited by the two cam plates 332, and the flange 333 performs final positioning on the cam plate 332, thereby not only meeting the expansion requirements of the two expansion rings, but also avoiding the situation that the two expansion rings are tripped.
As shown in fig. 1, in order to improve the working performance of the mobile centering system 4, the mobile centering system 4 in the invention comprises a driven walking frame 42, a driven wheel matched with the inner wall of a drain pipe to be repaired is arranged on the driven walking frame 42, a driving walking frame 43 is arranged on one side of the driven walking frame 42 away from the spin-expanding system 3, a driven wheel matched with the inner wall of the drain pipe to be repaired and a steering engine 44 in transmission connection with each driven wheel are arranged on the driving walking frame 43, and a transverse bridge 45 is directly arranged between the driving walking frame 43 and the driven walking frame 42. The driven wheel and the driving wheel are in contact fit with the inner wall of the drain pipe to be repaired all the time, the steering engine 44 can enable the driving walking frame to perform linear motion, the driven walking frame 42 is driven to perform dynamic adjustment along with the stepping displacement of the spin-expansion system 3, the balance capacity of the spin-expansion system 3 in the repair process is fully ensured, and the repair quality is improved.
The present invention is not limited to the above-mentioned embodiments, and any equivalent embodiments which can be changed or modified by the technical content disclosed above can be applied to other fields, but any simple modification, equivalent changes and modification made to the above-mentioned embodiments according to the technical substance of the present invention without departing from the technical content of the present invention still belong to the protection scope of the technical solution of the present invention.
Claims (4)
1. The utility model provides a pipeline inner wall expansion device for municipal drain pipe non-excavation restoration, its characterized in that includes progressive braced system, progressive braced system includes two straight line progressive mechanism of fore-and-aft butt joint, all be provided with telescopic radial braced mechanism on the straight line progressive mechanism, progressive braced system's front end is provided with driving system, driving system includes rotary power mechanism and hydraulic power mechanism, hydraulic power mechanism includes oil tank and oil pump, the pump oil pipe mouth of oil pump is provided with rotary joint, rotary joint's the other end is provided with the pump oil axle that is connected with rotary power mechanism transmission, the one end that the pump oil axle kept away from hydraulic power mechanism is provided with the system of expanding soon, the system of expanding soon includes the bi-directional hydro-cylinder of being connected with the pump oil axle, the bidirectional oil cylinder comprises a plurality of bidirectional piston rods which are perpendicular to the linear movement direction of the rotary expansion system, the plurality of bidirectional piston rods are radially arranged on the inner side of the rotary expansion mechanism, the rotary expansion mechanism comprises a first expansion ring and a second expansion ring which are movably buckled in a reverse direction, the inner walls of the first expansion ring and the second expansion ring are connected with the bidirectional oil cylinder, the center of the rotary expansion mechanism is provided with a limiting mechanism for limiting the axial transmission of the first expansion ring and the second expansion ring, the front side of the rotary expansion system is provided with a movable centering system, the outer side of the movable centering system is used for being in rolling fit with the inner wall of a drain pipe to be repaired, the movable centering system comprises a centering pipe arranged towards one side of the rotary expansion system, and the end part of the centering pipe is sleeved with a solid shaft arranged at the center of the rotary expansion system;
The linear progressive mechanism comprises a cylindrical frame, a hydraulic connector is arranged at the shaft end of the cylindrical frame and communicated with an oil tank through an oil pipe, a plurality of pairs of traveling wheels distributed in a circular array are arranged on the cylindrical surface of the cylindrical frame, each pair of traveling wheels comprises two traveling wheels which are axially arranged, and the wheel surfaces of the traveling wheels face the inner wall of a pipeline to be repaired;
The telescopic radial supporting mechanism comprises a distributed oil cylinder arranged in a cylindrical frame, the distributed oil cylinder comprises a cylinder body, one end of the cylinder body is connected with a hydraulic connector, the hydraulic connector comprises two concentric piston rods which are sleeved, the end part of one concentric piston rod is fixedly connected with the end part of the distributed oil cylinder, the center of the cylinder body is provided with a central oil cavity which is movably matched with the other concentric piston rod, the side wall of the cylinder body is provided with a plurality of distributed oil cavity groups distributed in a circular array and an oil return pipeline which is communicated with the distributed oil cavity groups, the distributed oil cavity groups comprise a plurality of sub oil cavities distributed along the length direction of the cylinder body, radial piston rods are arranged in the sub oil cavities, and supporting blocks are arranged at the end parts of the radial piston rods and are used for being in contact fit with the inner wall of a drain pipe to be repaired;
the oil return pipeline comprises a plurality of main oil return pipes communicated with the oil tank, a plurality of sub oil return pipes distributed along the length direction of the main oil return pipes are arranged on the main oil return pipes, and oil nozzles communicated with adjacent sub oil cavities are arranged on the sub oil return pipes;
the inner part of the pump oil shaft is provided with an oil inlet hole and an oil return hole which are parallel to the axial lead of the pump oil shaft and have different center distances, the inner part of the rotary joint is provided with a first annular oil passage and a second annular oil passage which are matched with the oil inlet passage and the oil return passage, and the first annular oil passage and the second annular oil passage are respectively connected to an oil inlet and an oil return hole of the oil pump through hoses;
The first expansion ring and the second expansion ring comprise ring bodies, an arc sinking groove is formed in one side, facing the other ring body, of each ring body, each sinking groove is matched with a protruding portion of the other ring body, a pair of transverse bar holes which are vertically symmetrically distributed are formed in the ring body of each first expansion ring, guide bolts which are movably matched with the transverse bar holes are arranged on the ring body of each second expansion ring, and the inner wall of each first expansion ring and the inner wall of each second expansion ring are connected with different bidirectional piston rods;
the bidirectional piston rod comprises a rod body, a piston body is arranged in the middle of the rod body, an oil inlet chamber and an oil return chamber are respectively arranged on two sides of the piston body, and the oil inlet chamber and the oil return chamber are respectively communicated with the oil inlet hole and the oil return hole.
2. The municipal drain pipe trenchless rehabilitation pipe inner wall expanding device according to claim 1, wherein the rotary power mechanism comprises a gear motor, a gear set is arranged at a power output end of the gear motor, and the gear set is connected with the oil pumping shaft through a key.
3. The municipal drain pipe non-excavation restoration pipeline inner wall expansion device according to claim 1, wherein the limiting mechanism comprises two check rings distributed on the inner walls of the first expansion ring and the second expansion ring, two sides of the two check rings, which are far away from the circular body, are respectively provided with a cam plate, the cam plates are matched with annular grooves arranged on the end face of the circular body, the centers of the cam plates and the check rings are provided with flange pieces, each flange piece comprises a cylinder body, through holes matched with a bidirectional piston rod are formed in the side wall of each cylinder body, and flange plates are arranged at the end parts of the cylinder bodies.
4. The pipeline inner wall expanding device for non-excavation repairing of municipal drainage pipes according to claim 1, wherein the movable centering system comprises a driven walking frame, driven wheels matched with the inner wall of the drainage pipe to be repaired are arranged on the driven walking frame, a driving walking frame is arranged on one side, away from the spin-expanding system, of the driven walking frame, driven wheels matched with the inner wall of the drainage pipe to be repaired and steering engines in transmission connection with each driven wheel are arranged on the driving walking frame, and transverse bridges are directly arranged on the driving walking frame and the driven walking frame.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210233366.8A CN114589216B (en) | 2022-03-10 | 2022-03-10 | Pipeline inner wall expansion equipment for non-excavation repair of municipal drainage pipe |
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| CN202210233366.8A CN114589216B (en) | 2022-03-10 | 2022-03-10 | Pipeline inner wall expansion equipment for non-excavation repair of municipal drainage pipe |
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| CN114589216B true CN114589216B (en) | 2024-06-14 |
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|---|---|---|---|---|
| CN201341306Y (en) * | 2009-01-07 | 2009-11-11 | 刘继成 | Hydraulic row spacing adjusting device for drill cultivator |
| CN106439376A (en) * | 2016-10-11 | 2017-02-22 | 西南石油大学 | Peristaltic inner concave pipeline repairing machine |
| CN212552434U (en) * | 2020-05-10 | 2021-02-19 | 刘爱金 | Steel reinforcement cage welding frock |
| CN112848244A (en) * | 2021-01-26 | 2021-05-28 | 宜宾学院 | Rotary pipeline expanding device |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2608022B2 (en) * | 1993-08-02 | 1997-05-07 | 株式会社ジオトップ | Earth auger |
| KR101072927B1 (en) * | 2009-10-01 | 2011-10-17 | 한전케이피에스 주식회사 | Radial hydraulic ram for centering bolt holes |
| CN111853425A (en) * | 2020-07-25 | 2020-10-30 | 浙江诚基环境工程有限公司 | Pipe inner repairing device sinks |
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2022
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201341306Y (en) * | 2009-01-07 | 2009-11-11 | 刘继成 | Hydraulic row spacing adjusting device for drill cultivator |
| CN106439376A (en) * | 2016-10-11 | 2017-02-22 | 西南石油大学 | Peristaltic inner concave pipeline repairing machine |
| CN212552434U (en) * | 2020-05-10 | 2021-02-19 | 刘爱金 | Steel reinforcement cage welding frock |
| CN112848244A (en) * | 2021-01-26 | 2021-05-28 | 宜宾学院 | Rotary pipeline expanding device |
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