Traction device for repairing PE pipe lining

Abstract

The utility model relates to a traction device for repairing a PE (Poly Ethylene) pipe lining, in particular to a device for replacing traction equipment during the operation process of inserting a PE pipe into an outlet end. The hydraulic thruster consists of a hydraulic thruster I, an inner taper sleeve II and an outer sheath III, the hydraulic thruster I consists of a supporting plate assembly, a hydraulic cylinder assembly, a slip retainer assembly, a hydraulic pipeline and a fastener I; the fastener I consists of a screw rod and a nut; the slip retainer assembly and the supporting plate assembly are of a detachable assembling structure. The inner taper sleeve II consists of a taper sleeve and a handle; the tool is innovated and optimized aiming at the traction problem in the equal-diameter repairing and inserting process of the PE pipe by utilizing mutual matching and adjustment among the hydraulic thruster, the inner taper sleeve and the outer sheath, the use efficiency of equipment is effectively improved, the service life and the maintenance period of a steel wire rope are effectively prolonged, and the production cost is reduced. And meanwhile, the dependence of a traditional process and a tool on equipment is replaced, and safety accidents are reduced.

Description

Technical Field

[0001] The utility model relates to a traction device for repairing the inner lining of a PE pipe, in particular to a replacement device for traction equipment during the operation process of inserting the outlet end of the PE pipe. Background Art

[0002] PE (HDPE) pipe is a kind of plastic pipe widely used in water supply and drainage engineering. The inner wall of this kind of pipe is smooth, strong in tensile strength, corrosion-resistant, and has a long service life. It can be used for pressure flow pipes and gravity flow pipes, and can be constructed by excavation or trenchless construction. During the construction process, the equal-diameter compression and interlacing process is the most economical, reliable, and practical trenchless repair technology for PE (HDPE) pipes. This process involves PE pipe stretching and traction during flange welding. In this process, it means the repeated use of the traction device, which seriously restricts the improvement of work efficiency. At the same time, the reciprocating traction of the rope will inevitably accelerate the wear of the wire rope, thereby affecting the service life of the wire rope, and accompanied by safety accident hazards. Designing a traction device for repairing the lining of PE pipes can not only improve the service life of the wire rope and reduce its economic cost, but also provide the operating efficiency of the traction equipment, provide the efficiency of the equipment, and provide guarantees for the joint operation of multiple teams; in addition, the research and development of this equipment reduces the occurrence of safety production hazards and saves labor costs, so it is necessary to invent this device. Utility Model Content

[0003] The utility model aims to provide a traction device for repairing the inner lining of a PE pipe, so as to solve the problems existing in the prior art.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A traction device for repairing the inner lining of a PE pipe is characterized by being composed of three parts: a hydraulic thruster, an inner cone sleeve and an outer sheath.

[0006] The hydraulic thruster 1 adopts an assembled structure.

[0007] The hydraulic thruster includes a support plate assembly, a hydraulic cylinder assembly, a slip ring assembly, a hydraulic pipeline and a fastener I.

[0008] The fastener I consists of a screw and a nut.

[0009] The support plate assembly and the hydraulic cylinder assembly are connected together through the cooperation of a screw rod and a nut.

[0010] The slip retainer assembly and the support plate assembly adopt a detachable assembly structure.

[0011] The inner cone sleeve is composed of two parts, namely a cone sleeve and a handle.

[0012] The outer sheath is composed of upper and lower semicircular arcs, a pin shaft, a pin and a fastener II.

[0013] One end of the upper and lower semicircular arcs is connected together by the cooperation of a pin shaft and a pin, and the other end is connected together by the cooperation of a fastening bolt and a fastening nut, thereby ensuring the pre-tightening force between the outer sheath and the pipeline to be lined.

[0014] The advantages of the utility model are:

[0015] 1. By utilizing the mutual coordination and adjustment between the hydraulic thruster, the inner cone sleeve and the outer sheath, the tooling was innovated and optimized to solve the traction problem during the repair and insertion of PE pipes of equal diameters, which effectively improved the use efficiency of the equipment, effectively extended the service life and maintenance cycle of the wire rope, and replaced the dependence of traditional processes and tooling on equipment, reducing the occurrence of safety accidents; at the same time, the device liberated the use efficiency of large-scale traction equipment, reduced the working intensity of the machinery, reduced the operation time, improved the efficiency of cross-operation, and achieved the effect of energy conservation and emission reduction, which is in line with the company's people-oriented development concept and the national strategy of sustainable development.

[0016] 2. With the innovative and integrated technology, it has indeed played the role of traction replacement, liberating the PE pipe outlet from dependence on large-scale traction equipment, improving the operating efficiency of the equipment, and meeting the needs of cross-operation. At the same time, the design reflects the development trend from single equipment to multi-functional and intelligent equipment, and has good practical performance and economic rationality. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the following is a brief introduction to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor.

[0018] Figure 1 It is a structural schematic diagram of the utility model; Figure 2 It is a schematic diagram of the structure of a hydraulic thruster; Figure 3 It is a structural schematic diagram of the inner cone sleeve; Figure 4 is a schematic diagram of the structure of the outer sheath from a first-person perspective; Figure 5 It is a schematic structural diagram of the outer sheath from a second perspective.

[0019] Figure numerals: I, hydraulic thruster; II, inner cone sleeve; III, outer sleeve; 1, support plate assembly; 2, hydraulic cylinder assembly; 3, slip ring assembly; 4, hydraulic pipeline; 5, fastener; 7, cone sleeve; 8, upper and lower semicircular arcs; 9, pin shaft; 10, pin; 11, fastening bolt; 12, fastening nut; 13, handle. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] like Figure 1-5 As shown, a traction device for repairing the lining of a PE pipe comprises a hydraulic thruster I, an inner cone sleeve II, and an outer sheath III.

[0022] The hydraulic thruster 1 adopts an assembled structure; the hydraulic thruster 1 includes a support plate assembly 1, a hydraulic cylinder assembly 2, a slip retainer assembly 3, a hydraulic pipeline 4 and a fastener 1; the fastener 1 is composed of a screw 5 and a nut 6; the support plate assembly 1 and the hydraulic cylinder assembly 2 are connected together by the cooperation of the screw 5 and the nut 6; the slip retainer assembly 3 and the support plate assembly 1 adopt a detachable assembly structure to meet the working conditions of different pipe diameters; the support plate assembly 1 is composed of three support plates, and the support plates are welded and fixed with structural steel parts to ensure the strength and stability of the device; the support plate located in the middle is provided with a positioning hole, and is connected to the flange of the pipeline to be lined by the cooperation of positioning bolts and positioning nuts, thereby offsetting the reverse force generated during the traction process and ensuring the completion of the construction task.

[0023] The inner cone sleeve II is composed of two parts, namely the cone sleeve 7 and the handle 13. The cone sleeve 7 is formed by integral extrusion and is precisely machined on a lathe. A hydraulic pipeline channel is reserved in the middle and a designed taper is adopted to meet the requirements of a certain range of pipe diameters, thereby increasing the universality of the device and improving economic efficiency. The handle 13 adopts a detachable structure, which is easy to maintain and meet the requirements of the working space under specific working conditions. The device has strong applicability.

[0024] The outer sheath III is composed of upper and lower semicircular arcs 8, a pin shaft 9, a pin 10 and a fastener II, wherein the upper and lower semicircular arcs 8 are formed by rolling and welding of plates, and the middle is reinforced and welded by profiles; one end of the upper and lower semicircular arcs 8 is connected together by the cooperation of the pin shaft 9 and the pin 10, and is rotated along the pin shaft 9 to open and close a certain angle, which is convenient for the assembly and cooperation of the outer sheath III and the pipeline to be lined, and the other end is connected together by the cooperation of the fastening bolt 11 and the fastening nut 12, thereby ensuring the preload force of the outer sheath III and the pipeline to be lined.

[0025] The inner sides of the upper and lower semicircular arcs 8 of the outer sheath III adopt a slip guard ring mode, which can adapt the slip radius according to different pipe diameters to meet different working conditions. At the same time, the slip guard ring adopts a detachable structure, which can realize the rapid assembly and matching of the slips, save operation time, and improve work efficiency, thereby ensuring the wide applicability of the device and the implementation of the operation task.

[0026] Working principle:

[0027] Before the PE pipe is inserted into the outlet end, the support plate assembly 1 and the hydraulic cylinder assembly 2 are assembled and fixed by fasteners I, and the hydraulic pipeline 4 is installed. The hydraulic device is operated in conjunction with the slip ring assembly 3 according to different pipe diameter specifications; after the installation is completed, the device is placed on the flange end, and the positioning bolts are adjusted so that the corresponding positions of the flange holes correspond one by one. After the position is determined, the positioning nuts are tightened to fix it; the length of the hydraulic cylinder assembly 2 is adjusted, and the reserved length of the PE pipe is cut according to different working conditions. The tapered sleeve 7 and the upper and lower semicircular arcs 8 are installed, and the fasteners II are adjusted so that the tapered sleeve 7, the upper and lower semicircular arcs 8 are fully matched and contacted with the reserved PE pipe. During the PE pipe traction process, through the close cooperation of the three and the friction generated between them, it is ensured that the PE pipe traction reaches the designed length, thereby meeting the operation requirements and completing the engineering operation tasks.

[0028] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A traction device for repairing PE pipe lining, characterized in that: The invention is composed of a hydraulic thruster I, an inner cone sleeve II and an outer sleeve III; the hydraulic thruster I is composed of a support plate assembly (1), a hydraulic cylinder assembly (2), a slip ring assembly (3), a hydraulic pipeline (4) and a fastener I; the fastener I is composed of a screw (5) and a nut (6); the slip ring assembly (3) and the support plate assembly (1) adopt a detachable assembly structure; the inner cone sleeve II is composed of a cone sleeve (7) and a handle (13); the outer sleeve III is composed of upper and lower semicircular arcs (8), a pin shaft (9), a pin (10) and a fastener II.

2. The traction device for repairing the PE pipe lining according to claim 1 is characterized in that: The hydraulic thruster 1 adopts an assembled structure.

3. The traction device for repairing the PE pipe lining according to claim 1 is characterized in that: The support plate assembly (1) and the hydraulic cylinder assembly (2) are fixed via a fastener I.

4. The traction device for repairing the PE pipe lining according to claim 1 is characterized in that: The fastener II is composed of a fastening bolt (11) and a fastening nut (12).

5. The traction device for repairing the PE pipe lining according to claim 1 is characterized in that: One end of the upper and lower semicircular arcs (8) is connected together by the cooperation of a pin shaft (9) and a pin (10), and the other end is connected together by the cooperation of a fastening bolt (11) and a fastening nut (12).

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