CN114589216A - Municipal drainage pipe non-excavation is restoreed and is used pipeline inner wall expansion equipment - Google Patents
Municipal drainage pipe non-excavation is restoreed and is used pipeline inner wall expansion equipment Download PDFInfo
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- CN114589216A CN114589216A CN202210233366.8A CN202210233366A CN114589216A CN 114589216 A CN114589216 A CN 114589216A CN 202210233366 A CN202210233366 A CN 202210233366A CN 114589216 A CN114589216 A CN 114589216A
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- 238000009412 basement excavation Methods 0.000 title claims description 6
- 230000007246 mechanism Effects 0.000 claims abstract description 85
- 230000000750 progressive effect Effects 0.000 claims abstract description 35
- 230000002457 bidirectional effect Effects 0.000 claims abstract description 24
- 239000007787 solid Substances 0.000 claims abstract description 5
- 230000005540 biological transmission Effects 0.000 claims description 7
- 238000005086 pumping Methods 0.000 claims description 6
- 230000009467 reduction Effects 0.000 claims description 6
- 238000009792 diffusion process Methods 0.000 claims description 4
- 230000002441 reversible effect Effects 0.000 claims description 3
- 210000002445 nipple Anatomy 0.000 claims description 2
- 210000001503 joint Anatomy 0.000 claims 2
- 230000008439 repair process Effects 0.000 abstract description 19
- 230000008901 benefit Effects 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 6
- 230000009471 action Effects 0.000 description 8
- 238000010276 construction Methods 0.000 description 7
- 230000001429 stepping effect Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000011065 in-situ storage Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 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
- 230000008602 contraction Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000006872 improvement Effects 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
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- Y02A30/60—Planning or developing urban green infrastructure
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Abstract
The invention belongs to the technical field of municipal engineering facility equipment, and provides pipeline inner wall expansion equipment for trenchless repair of municipal drainage pipes, which comprises a progressive support system, wherein the progressive support system comprises two front and back butted linear progressive mechanisms, telescopic radial support mechanisms are arranged on the linear progressive mechanisms, a power system is arranged at the front end of the progressive support system, the power system comprises a rotary power mechanism and a hydraulic power mechanism, a power output end of the hydraulic power mechanism is provided with a rotary expansion system, the rotary expansion system comprises a bidirectional oil cylinder, a rotary expansion machine 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 the advantages of 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 facility equipment, and particularly relates to pipeline inner wall expansion equipment for trenchless repair of municipal drainage pipes.
Background
The municipal infrastructure refers to various buildings, structures, equipment and the like which are arranged in the planning and construction range of urban areas and towns (villages) and provide paid or unpaid public products and services for residents based on government responsibilities and obligations. The construction of various public infrastructures matched with urban life belongs to the field of municipal engineering, wherein a municipal drainage pipe network is an important municipal infrastructure. The drain pipe is the important pipeline of emission production sewage, domestic sewage, and municipal drainage pipe is in the use, and the extrusion of town road easily causes municipal drainage pipe the condition that local position collapses the deformation. In order to repair the collapse position of the municipal drainage pipe, the drainage pipe made of a certain elastic material can be expanded and repaired by using specific construction equipment.
At present, equipment for expanding and repairing a drain pipe is generally in a non-excavation construction form, the construction form can meet the requirement of the current road traffic flow, and particularly the efficiency of normal operation of a city is ensured. When the existing municipal drainage pipe expansion equipment is used for expansion repair, an in-situ radial loading mode is mostly adopted, namely after the construction equipment enters a deformation position of a pipeline to be repaired, radial pressure is applied to the deformation position to recover the construction equipment. However, since the loading end of the device directly contacting the pipeline is in point contact with the pipeline in the repair process and then gradually becomes surface contact, the in-situ radial loading mode has a good repair effect on radial ridge deformation, but the device has a poor repair effect on irregular deformation such as obvious deformation with an eccentric trend, the probability of secondary collapse after repair is high, and meanwhile, the device is easily damaged by unrecoverable damage in the loading process, and the comprehensive utilization rate of the device 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 the 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 purpose, the technical scheme adopted by the invention is that the municipal drainage pipe trenchless restoration pipeline inner wall expansion equipment comprises a progressive support system, the progressive support system comprises two front and rear butted linear progressive mechanisms, telescopic radial support mechanisms are respectively arranged on the linear progressive mechanisms, a power system is arranged at the front end of the progressive support system, the power system comprises a rotary power mechanism and a hydraulic power mechanism, the hydraulic power mechanism comprises an oil tank and an oil pump, a rotary joint is arranged at an oil pump pipe opening of the oil pump, an oil pumping shaft in transmission connection with the rotary power mechanism is arranged at the other end of the rotary joint, a rotary expansion system is arranged at one end, far away from the hydraulic power mechanism, of the oil pumping shaft, the rotary expansion system comprises a bidirectional oil cylinder connected with the oil pumping shaft, the bidirectional oil cylinder comprises a plurality of bidirectional piston rods and is perpendicular to the linear moving direction of the rotary expansion system, the equal radial setting of a plurality of two-way piston rods is in the inboard that expands the mechanism soon, expand the mechanism soon and include first pressure ring and the second pressure ring that expands of reverse activity lock joint, the inner wall that first pressure ring and second expanded the pressure ring is connected with two-way hydro-cylinder, the center that expands the mechanism soon is provided with and is used for restricting the two axial drive's stop gear, the front side that expands the system soon is provided with the removal centering system, the outside that removes the centering system is used for with treating prosthetic drain pipe inner wall roll cooperation, remove the centering system and include the centering pipe that the orientation expands system one side setting soon, the tip of centering pipe cup joints with the solid axle that sets up at the system center that expands soon.
Preferably, the linear progressive mechanism comprises a cylindrical frame, a hydraulic connector is arranged at the shaft end of the cylindrical frame and is communicated with an oil tank through an oil pipe, a plurality of pairs of walking wheels distributed in a circular array are arranged on the cylindrical surface of the cylindrical frame, and each pair of walking wheels comprises two walking wheels which are axially arranged and the wheel surfaces of the walking wheels face the inner wall of the pipeline to be repaired.
Preferably, the telescopic radial support mechanism comprises distributed oil cylinders arranged inside 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 which are sleeved, the end of one of the concentric piston rods is fixedly connected with the end 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, a plurality of distributed oil cavity groups distributed in a circular array and an oil return pipeline communicated with the distributed oil cavity groups are arranged on the side wall of the cylinder body, the 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, the end part of the radial piston rod is provided with a supporting block which is used for being in contact fit with the inner wall of the 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 rotating power mechanism comprises a speed reducing motor, a power output end of the speed reducing motor is provided with a gear set, and the gear set is connected with the oil pumping shaft through a key.
Preferably, an oil inlet and an oil return hole which are parallel to the axis line of the pump oil shaft and have different center distances are formed in the pump oil shaft, a first annular oil duct and a second annular oil duct which are matched with the oil inlet channel and the oil return channel are formed in the rotary joint, and the first annular oil duct and the second annular oil duct are connected to an oil inlet and an oil return opening of the oil pump through hoses respectively.
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 pressure expanding ring and the second pressure expanding ring both comprise ring bodies, one side of each ring body, facing to the other ring body, is provided with an arc-shaped sinking groove, the sinking grooves are matched with the protruding parts of the other ring body, the ring body of the first pressure expanding ring is provided with a pair of transverse strip holes which are symmetrically distributed up and down, the ring body of the second pressure expanding ring is provided with a guide bolt which is movably matched with the transverse strip holes, and the inner wall of the first pressure expanding ring and the inner wall of the second pressure expanding ring are respectively connected with different bidirectional piston rods.
Preferably, the limiting mechanism comprises two retaining rings distributed on the inner walls of the first pressure expanding ring and the second pressure expanding ring, cam plates are arranged on two sides, far away from the ring body, of the two retaining rings, the cam plates are matched with annular grooves formed in the end face of the ring body, flange pieces are arranged at the centers of the cam plates and the retaining rings, each flange piece comprises a cylinder body, through holes matched with the two-way piston rods are formed in the side wall of the cylinder body, and a flange plate is arranged at the end portion of the cylinder body.
Preferably, the mobile centering system comprises a driven walking frame, a driven wheel matched with the inner wall of the drain pipe to be repaired is arranged on the driven walking frame, a driving walking frame is arranged on one side, away from the rotary expansion system, of the driven walking frame, a driven wheel matched with the inner wall of the drain pipe to be repaired and a steering engine in transmission connection with each driven wheel are arranged on the driving walking frame, and a transverse bridge is directly arranged between the driving walking frame and the driven walking frame.
Compared with the prior art, the invention has the advantages and positive effects that:
1. according to the pipeline inner wall expansion device for the municipal drainage pipe trenchless repair, the progressive support system is utilized to move the rotary expansion system towards the area of the drainage pipe to be repaired in a progressive propelling mode, the rotary expansion system can be gradually extended under the action of the power system and repair a deformed area in a rotary expansion mode, meanwhile, the movable centering system is used for limiting the rotating center of the progressive rotary expansion system, the dynamic loading effect is good, and therefore high rotary expansion quality can be obtained, and the actual service life of the whole device can be prolonged.
2. The pipeline inner wall expansion equipment for trenchless restoration of the municipal drainage pipe, provided by the invention, has the advantages that the progressive supporting system, the power system, the rotary expansion system and the mobile centering system are detachably connected at the designed connecting positions, the requirement of trenchless restoration of the pipeline can be met, the equipment can be effectively adapted to an underground drainage pipeline, the operability is good, the maneuverability is strong, the restoration efficiency is high, the comprehensive utilization rate is high, and the equipment is suitable for large-scale popularization.
3. According to the pipeline inner wall expansion equipment for trenchless restoration of the municipal drainage pipe, two expansion rings of a rotary expansion mechanism in a rotary expansion system can obtain expansion matched with the pipeline to be restored after being driven by a bidirectional oil cylinder, the actual expansion can be gradually expanded until the pipeline is completely restored, and the rotary expansion system has rotation and stepping actions, so that rotary expansion can be realized in a surface-to-surface contact mode at each restoration section, and the drainage pipe to be restored has high restoration quality.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.
FIG. 1 is an isometric view of an embodiment of the pipe inner wall expansion device for trenchless rehabilitation of municipal drainage pipes;
FIG. 2 is an isometric view of a linear progression mechanism, power system, and rotary expansion system provided by an embodiment;
FIG. 3 is an enlarged schematic view of the structure A in FIG. 2 according to an exemplary embodiment;
FIG. 4 is an isometric view of a linear progression mechanism, a reduction motor, an oil tank, and a rotary expansion system provided in accordance with an embodiment;
FIG. 5 is a schematic diagram of an internal structure of a hydraulic connector according to an embodiment;
FIG. 6 is an exploded view of a rotary expansion system provided in an embodiment;
FIG. 7 is an isometric view of a rotary expansion system provided by an embodiment in a non-operating state;
FIG. 8 is a working isometric view of a rotary reaming system provided by an embodiment;
FIG. 9 is an isometric view of a first pressure expanding ring provided by the embodiments;
FIG. 10 is an isometric view of a second pressure expanding ring provided by the embodiments;
FIG. 11 is an isometric view of the bi-directional cylinder provided in accordance with an embodiment;
FIG. 12 is a cross-sectional view of the rotary joint and pump oil shaft provided in accordance with an embodiment;
in the above figures:
1. a progressive support system; 11. a linear progression mechanism; 111. a cylindrical frame; 112. a hydraulic connector; 1121. a concentric piston rod; 113. a traveling wheel; 12. a telescopic radial support mechanism; 121. distributed oil cylinders; 1211. a cylinder body; 1212. a central oil chamber; 1213. a distributed oil cavity group; 1214. a sub-oil chamber; 122. a radial piston rod; 123. a support block; 124. an oil return line; 1241. a main oil return pipe; 1242. a sub oil return pipe; 1243. a nozzle tip;
2. a power system; 21. a rotary power mechanism; 211. a reduction motor; 212. a gear set; 22. a hydraulic power mechanism; 221. an oil tank; 222. a pump oil 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 rotary expanding system; 31. a bidirectional oil cylinder; 311. a bidirectional piston rod; 3111. a rod body; 3112. a piston body; 32. a rotary expanding mechanism; 32a, a first pressure expanding ring; 32b, a second pressure expanding ring; 321. a loop body; 322. sinking a groove; 323. a transverse 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 barrel; 3332. a flange plate; 3333. a through hole; 34. a solid shaft;
4. a mobile centering system; 41. a centering tube; 42. a driven walking frame; 43. an active walking frame; 44. a steering engine; 45. a transverse bridge.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, the present invention will be further described with reference to the accompanying drawings and examples. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict. For convenience of description, the words "upper", "lower", "left" and "right" used herein refer to the same directions as the drawings, and do not limit the structure.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and thus the present invention is not limited to the specific embodiments of the present disclosure.
In the embodiment, as shown in fig. 1, 6, 7 and 8, the pipe inner wall expansion device for trenchless rehabilitation of municipal drainage pipes provided by the invention comprises a progressive support system 1, the progressive support system 1 comprises two linear progressive mechanisms 11 which are butted front and back, telescopic radial support mechanisms 12 are arranged on the linear progressive mechanisms 11, a power system 2 is arranged at the front end of the progressive support system 1, 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, a rotary joint 223 is arranged at an oil pump pipe orifice of the oil pump, an oil pump shaft 222 in transmission connection with the rotary power mechanism 21 is arranged at the other end of the rotary joint 223, a rotary expansion system 3 is arranged at one end of the oil pump shaft 222 far away from the hydraulic power mechanism 22, the rotary expansion system 3 comprises a bidirectional oil cylinder 31 connected with the oil pump shaft 222, the bidirectional oil cylinder 31 comprises a plurality of bidirectional piston rods 311 and is perpendicular to the linear moving 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 pressure expansion ring 32a and a second pressure expansion ring 32b which are movably buckled in the reverse direction, the inner walls of the first pressure expansion ring 32a and the second pressure expansion ring 32b are connected with the bidirectional oil 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 first pressure expansion ring and the second pressure expansion ring, the front side of the rotary expansion system 3 is provided with a mobile centering system 4, the outer side of the mobile centering system 4 is used for being in rolling fit with the inner wall of a drain pipe to be repaired, the mobile 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, the linear progressive mechanism 11 in the progressive support system 1 can move linearly along the inner wall of the pipeline to be repaired, and the moving basis is that the telescopic radial support mechanism 12 on the other linear progressive mechanism 11 is supported at the position, and the linear progressive mechanism 11 needing to move performs linear propulsion or retraction under the action of the power of the linear progressive mechanism 11. When forward rotary expansion is needed, the linear progressive mechanism 11 drives the rotary expansion system 3 to move towards the area to be repaired until the end part of the rotary expansion system 3 reaches the initial end of repair; the rotary power mechanism 21 of the power system 2 drives the pump oil 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 pressure expanding ring 32a and the second pressure expanding ring 32b of the rotary expanding system 3 can obtain the expanded diameter matched with the area of the pipeline to be repaired after being driven by the bidirectional oil cylinder 31, the actual expanded diameter can be gradually expanded, the pipeline can be completely repaired while being expanded, in addition, the rotary expanding system 3 has the actions of rotation and stepping, the area to be repaired is divided into a plurality of continuous repairing sections, and each repairing section can be in surface-to-surface contact with the first pressure expanding ring 32a and the second pressure expanding ring 32b to realize the rotary expanding, so that the drainage pipeline to be repaired obtains higher repairing quality, and the actual service life of the pump oil shaft 222 is prolonged. The progressive support system 1 moves the rotary expanding system 3 towards the drain pipe area to be repaired in a progressive propelling mode, the rotary expanding system 3 can gradually extend under the action of the power system 2 and gradually repair the deformed area repairing section in a rotary expanding mode, and meanwhile, the movable centering system 4 limits the rotating center of the rotary expanding system 3 which is gradually propelled, so that the rotary expanding system 3 has a good dynamic loading effect in the continuous repairing process, the rotary expanding quality of the device is further improved, and the pipeline repairing efficiency is improved.
Further, braced system 1, driving system 2, expand system 3 and remove centering system 4 in the device step by step can dismantle the connection on the hookup location of design, can satisfy non-excavation repair conduit's needs, can effectively adapt to underground drainage pipeline moreover, maneuverability is better, mobility can be strong, and repair efficiency is higher and comprehensive utilization is higher.
As shown in fig. 2, 3 and 4, in order to improve the stepping capability of the linear progression mechanism 11, the linear progression mechanism 11 provided by the present invention includes a cylindrical frame 111, a hydraulic connector 112 is provided at a shaft end of the cylindrical frame 111, the hydraulic connector 112 is communicated with an oil tank 221 through an oil pipe, a plurality of pairs of road wheels 113 distributed in a circular array are provided on a cylindrical surface of the cylindrical frame 111, each pair of road wheels 113 includes two road wheels 113 arranged axially, and a wheel surface of the road wheel 113 faces an inner wall of a pipeline to be repaired. The cylindrical frame 111 serves as a stepping base for the power system 2 and the rotary expansion system 3 and also serves as a mounting base for the telescopic radial support mechanism 12. The cylinder frame 111 has a smaller diameter than the pipe, and the movable cylinder frame 111 is driven by the hydraulic connector 112 to move linearly. The main function of the travelling wheels 113 is to ensure that the cylindrical frame 111 can enter the interior of the pipeline along the wall of the pipeline, so that the difficulty of workers in loading the device into the pipeline is reduced; in the whole progressive process, the telescopic radial support mechanism 12 on the other linear progressive mechanism 11 needs to be in an extended support state, so that the travelling wheel 113 is actually in an overhead 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 present invention comprises a distributed cylinder 121 disposed inside a cylindrical frame 111, the distributed cylinder 121 comprises a cylinder body 1211, one end of the cylinder body 1211 is connected to a hydraulic connector 112, the hydraulic connector 112 comprises two concentric piston rods 1121 which are sleeved on each other, one of the concentric piston rods 1121 is an outer concentric piston rod of the driving cylinder 1211, an end of the outer concentric piston rod is fixedly connected with an end of the distributed oil cylinder 121, and the other concentric piston rod 1121 is an inner concentric piston rod, which is movably engaged with a central oil chamber 1212 provided at the center of the cylinder body 1211, and the inner cavity of the outer concentric piston rod and the central oil cylinder form two relatively independent cavities which can play a pressure balance function on two ends of the inner concentric piston rod, and the cavity 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 chamber groups 1213 distributed in a circular array and an oil return pipeline 124 communicated with the distributed oil chamber groups 1213 are arranged on the side wall of the cylinder body 1211, the distributed oil chamber groups 1213 include a plurality of sub-oil chambers distributed along the length direction of the cylinder body 1211, a radial piston rod 122 is arranged in each sub-oil chamber, a supporting block 123 is arranged at the end of each radial piston rod 122, and the supporting block 123 is used for being in contact fit with the inner wall of the drain pipe to be repaired. The central oil chamber 1212 and the sub-oil chamber of the cylinder 1211 serve as main oil chambers for driving the radial piston rod 122 to move, and 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 sub-oil cavity, so as to meet the requirements of supporting and pressure relief, and enable the linear progressive mechanism 11 to reasonably advance or retreat in the pipeline.
Further, for the telescoping radial support mechanism 12, the design working cross-sectional area of the central oil chamber 1212 is adjustable, such as the tip diameter of the inner concentric piston rod is smaller than the diameter of the central oil chamber 1212, while its different extension length in the central oil chamber 1212 can change the actual volume of the central oil chamber 1212 but still have a through supply oil passage for each distributed oil chamber group 1213. In this way, the extension length of the inner concentric piston rod in the central oil chamber 1212 can be adjusted by controlling the oil pressure ratio between the rear side and the front side of the inner concentric piston rod, so as to achieve the purpose of adjusting the expansion and contraction operation efficiency of the distributed cylinder 121, and further improve the stepping efficiency of the device.
Still further, the oil return pipeline 124 includes a plurality of main oil return pipes 1241 communicated with the oil tank 221, a plurality of sub oil return pipes 1242 distributed along the length direction of the main oil return pipe 1241 are disposed on the main oil return pipe 1241, and oil nipples 1243 communicated with adjacent sub oil chambers are disposed on the sub oil return pipes 1242. The main oil return pipe 1241 can supply oil or pump oil to a plurality of sub oil return pipes 1242 at the same time, 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 a plurality of radial piston rods 122 and the supporting block 123 is met. Meanwhile, a structural groove matched with the main oil return pipe 1241, the sub oil return pipe 1242 and the oil nozzle 1243 is further formed in the cylinder 1211, so that the simplification of a pipeline of equipment is facilitated, and the arrangement of the oil return pipeline 124 in the cylindrical frame 111 is improved.
As shown in fig. 4 and 7, in order to improve the utilization rate of the rotational power mechanism 21, the rotational power mechanism 21 according to the present invention includes a reduction motor 211, a gear set 212 is disposed at a power output end of the reduction motor 211, and one gear of the gear set 212 is connected to the oil pumping shaft 222 through a key.
As shown in fig. 7 and 12, in order to improve the oil pressure supply stability of the rotary expansion system 3 in consideration of the requirement of the rotary motion of the rotary expansion system 3, the present invention provides an oil inlet hole 2221 and an oil return hole 2222 parallel to the axial line of the pump oil shaft 222 and having different center distances, provides a first annular oil passage 2231 and a second annular oil passage 2232 matched with the oil inlet passage and the oil return passage in the rotary joint 223, and connects the first annular oil passage 2231 and the second annular oil passage 2232 to the oil inlet and the oil return port of the oil pump through hoses, respectively. In this way, the pump oil shaft 222 can be constantly kept in a rotational relationship with the rotary joint 223 by the driving of the rotational power mechanism 21, and a continuous and effective oil intake path and oil return path with the oil tank 221 can be established. This pump oil axle 222 and rotary joint 223 design benefit, and the practicality is stronger and the utilization ratio is higher.
As shown in fig. 11, in order to improve the driving operation efficiency of the rotating expanding 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 an oil inlet chamber and an oil return chamber are respectively disposed at two sides of the piston body 3112 and are respectively communicated with the oil inlet hole 2221 and the oil return hole 2222. Wherein, the moving directions of the rod bodies 3111 controlling different pressure expanding rings are opposite, meanwhile, the distribution positions of the oil inlet chamber and the oil return chamber of the two are opposite, the oil inlet path of the pump oil 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 expanding mechanism 32 achieves the purpose of expanding, and 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 retracting purpose of the rotating expanding mechanism 32 is achieved,
as shown in fig. 6 to 10, in order to improve the working performance of the rotary expanding mechanism 32, each of the first expanding ring 32a and the second expanding ring 32b provided by the present invention includes a ring body 321, an arc-shaped sinking groove 322 is provided at one side of the ring body 321 facing the other ring body 321, the sinking groove 322 is matched with a protruding portion of the other ring body 321, a pair of horizontal bar holes 323 symmetrically distributed up and down is provided on the ring body of the first expanding ring 32a, a guide bolt 324 movably matched with the horizontal bar holes 323 is provided on the ring body of the second expanding ring 32b, and an inner wall of the first expanding ring 32a and an inner wall of the second expanding ring 32b are respectively connected with different bidirectional piston rods 311. Like this, when two diffusion rings are driven by the two-way oil cylinder 31, the diffusion rings can translate along the surfaces of the two sunken grooves 322 under the guiding action of the guide bolts 324 and the transverse strip holes 323, and the sunken grooves 322 are designed to improve the space utilization rate of the rotary expansion mechanism 32, reduce the axial volume of the rotary expansion mechanism 32, shorten the unit length of a repair section and facilitate improvement of repair quality.
As shown in fig. 1, 6 and 9, in order to improve the anti-dropping performance of the first pressure expanding ring 32a and the second pressure expanding ring 32b, the limiting mechanism 33 provided by the present invention includes two retaining rings 331 distributed on the inner walls of the first pressure expanding ring 32a and the second pressure expanding ring 32b, cam plates 332 are disposed on both sides of the two retaining rings 331 away from the ring body 321, the cam plates 332 are engaged with the annular grooves 324 disposed on the end surface of the ring body 321, flange members 333 are disposed at the centers of the cam plates 332 and the retaining rings 331, the flange members 333 include a cylinder body 3331, a through hole 3333 engaged with the bidirectional piston rod 311 is disposed on the side wall of the cylinder body 3331, and a flange plate 3332 is disposed at the end of the cylinder body 3331. Wherein, the radial expansion moving direction of the circular ring body 321 is consistent with the direction of the far end of the cam plate 332; the retainer ring 331 is used as a surface increasing structure of the inner wall of the ring body 321, so that the contact area between the retainer ring 331 and the cam plate 332 is increased, and the proximal end and the distal end of the cam plate 332 can be completely blocked at the front side of the baffle, but the minimum ring diameter of the retainer ring 331 reserves enough moving space for radial expansion of the ring body 321, so that the axial lengths of the first pressure expanding ring 32a and the second pressure expanding ring 32b are effectively limited by the two cam plates 332, and the flange part 333 performs final positioning on the cam plate 332, thereby meeting the expansion requirements of the two pressure expanding rings and avoiding the situation that the two pressure expanding rings are released.
As shown in fig. 1, in order to improve the working performance of the mobile centering system 4, the mobile centering system 4 of the present invention includes a driven walking frame 42, a driven wheel matched with the inner wall of the drain pipe to be repaired is disposed on the driven walking frame 42, a driving walking frame 43 is disposed on one side of the driven walking frame 42 away from the rotary expansion system 3, the driving walking frame 43 is provided with the 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, and the driving walking frame 43 and the driven walking frame 42 are directly provided with a transverse bridge 45. Wherein, follow driving wheel and action wheel all the time with wait to restore the inner wall contact cooperation of drain pipe, and steering wheel 44 can make the drive initiative walking frame make linear motion to drive driven walking frame 42 and carry out dynamic adjustment along with the step displacement of expanding system 3 soon together, fully guarantee to expand the balance ability of system 3 in the restoration process soon, improve restoration quality.
The above description is only a preferred embodiment of the present invention, and not intended to limit the present invention in other forms, and any person skilled in the art may apply the above modifications or changes to the equivalent embodiments with equivalent changes, without departing from the technical spirit of the present invention, and any simple modification, equivalent change and change made to the above embodiments according to the technical spirit of the present invention still belong to the protection scope of the technical spirit of the present invention.
Claims (10)
1. The utility model provides a non-excavation of municipal drainage pipe is restoreed and is used pipeline inner wall expansion equipment, a serial communication port, including the braced system that advances gradually, the braced system that advances gradually includes the progressive mechanism of two straight lines of butt joint all around, the straight line advances gradually and all is provided with telescopic radial supporting mechanism in the mechanism, the front end of braced system that advances gradually 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 mouth of pipe of oil pump is provided with rotary joint, rotary joint's the other end is provided with the pump oil axle of being connected with the transmission of rotary power mechanism, the one end that hydraulic power mechanism was kept away from to the pump oil axle is provided with the system that expands soon, the system that expands soon includes the two-way hydro-cylinder of being connected with pump oil shaft, two-way hydro-cylinder includes a plurality of two-way piston rods and all is perpendicular to the rectilinear movement direction of the system that expands soon, the equal radial setting of a plurality of two-way piston rods is in the inboard that expands the mechanism soon, expand the mechanism soon and include first pressure ring and the second pressure ring that expands of reverse activity lock joint, the inner wall that first pressure ring and second expanded the pressure ring is connected with two-way hydro-cylinder, the center that expands the mechanism soon is provided with and is used for restricting the two axial drive's stop gear, the front side that expands the system soon is provided with the removal centering system, the outside that removes the centering system is used for with treating prosthetic drain pipe inner wall roll cooperation, remove the centering system and include the centering pipe that the orientation expands system one side setting soon, the tip of centering pipe cup joints with the solid axle that sets up at the system center that expands soon.
2. The pipeline inner wall expansion device for trenchless rehabilitation of municipal drainage pipes according to claim 1, wherein the linear progressive mechanism comprises a cylindrical frame, a hydraulic connector is arranged at the shaft end of the cylindrical frame and is communicated with an oil tank through an oil pipe, a plurality of pairs of walking wheels distributed in a circular array are arranged on the cylindrical surface of the cylindrical frame, and each pair of walking wheels comprises two walking wheels axially arranged and the wheel surface of each walking wheel faces towards the inner wall of the pipeline to be rehabilitated.
3. The municipal drainage pipe trenchless rehabilitation pipeline inner wall expansion equipment as claimed in claim 2, wherein the telescopic radial support mechanism comprises a distributed cylinder arranged inside a cylindrical frame, the distributed 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 of one concentric piston rod is fixedly connected with the end of the distributed cylinder, a central oil cavity movably matched with the other concentric piston rod is arranged in the center of the cylinder body, a plurality of distributed oil cavity groups distributed in a circular array and oil return pipelines communicated with the distributed oil cavity groups are arranged on the side wall of the cylinder body, 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 support blocks are arranged at the ends of the radial piston rods, the supporting block is used for being in contact fit with the inner wall of the drain pipe to be repaired.
4. The pipeline inner wall expanding device for trenchless rehabilitation of municipal drain pipe according to claim 3, wherein the oil return pipeline comprises a plurality of main oil return pipes communicated with the oil tank, the main oil return pipes are provided with a plurality of sub oil return pipes distributed along the length direction of the main oil return pipes, and the sub oil return pipes are provided with oil nipples communicated with adjacent sub oil cavities.
5. The municipal drainage pipe trenchless rehabilitation pipeline inner wall expanding device according to claim 1, wherein the rotating power mechanism comprises a speed reduction motor, a power output end of the speed reduction motor is provided with a gear set, and the gear set is in key connection with the oil pumping shaft.
6. The municipal drainage pipe trenchless rehabilitation pipeline inner wall expansion equipment according to claim 1, wherein an oil inlet and an oil return hole parallel to the axis line of the pump oil shaft and different in center distance are formed in the pump oil shaft, a first annular oil passage and a second annular oil passage matched with the oil inlet passage and the oil return passage are formed in the rotary joint, and the first annular oil passage and the second annular oil passage are respectively connected to an oil inlet and an oil return port of the oil pump through hoses.
7. The municipal drainage pipe trenchless rehabilitation pipeline inner wall expanding device according to claim 6, wherein 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 an oil inlet hole and an oil return hole.
8. The municipal drainage pipe trenchless restoration pipeline inner wall expansion equipment according to claim 1, wherein the first and second expansion rings each comprise a ring body, one side of the ring body facing the other ring body is provided with an arc-shaped sinking groove, the sinking groove is matched with a convex part of the other ring body, the ring body of the first expansion ring is provided with a pair of cross bar holes which are distributed symmetrically up and down, the ring body of the second expansion ring is provided with a guide bolt which is movably matched with the cross bar holes, and the inner walls of the first and second expansion rings are respectively connected with different bidirectional piston rods.
9. The municipal drainage pipe trenchless rehabilitation pipeline inner wall expansion device according to claim 8, wherein the limiting mechanism comprises two retaining rings distributed on the inner walls of the first diffusion ring and the second diffusion ring, cam plates are arranged on two sides, far away from the ring body, of the two retaining rings, the cam plates are matched with annular grooves formed in the end face of the ring body, flange pieces are arranged at the centers of the cam plates and the retaining rings, each flange piece comprises a cylinder body, through holes matched with the bidirectional piston rods are formed in the side wall of the cylinder body, and flange plates are arranged at the end portions of the cylinder body.
10. The pipeline inner wall expansion device for trenchless restoration of the municipal drainage pipe according to claim 1, wherein the movable centering system comprises a driven walking frame, a driven wheel matched with the inner wall of the drainage pipe to be restored is arranged on the driven walking frame, a driving walking frame is arranged on one side of the driven walking frame away from the rotary expansion system, the driven wheel matched with the inner wall of the drainage pipe to be restored and a steering engine in transmission connection with each driven wheel are arranged on the driving walking frame, and a transverse bridge is directly arranged between 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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| 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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| CN114589216A true CN114589216A (en) | 2022-06-07 |
| CN114589216B CN114589216B (en) | 2024-06-14 |
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| JPH0673730A (en) * | 1993-08-02 | 1994-03-15 | Jiototsupu:Kk | Construction method for soil-cement columnar body and earth auger used for said method |
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| CN114589216B (en) | 2024-06-14 |
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