Protective pipe for buried pipeline

Abstract

The utility model relates to a protective pipe for buried pipelines, which comprises a protective outer pipe extending in the front-back direction, two limiting plates which are vertically arranged at an interval are arranged in the protective outer pipe in a penetrating manner, the limiting plates are arc-shaped plates, and two limiting sleeves are oppositely buckled to form a circular limiting space for accommodating a pipe body between the two limiting sleeves. The two limiting plates are defined to be an upper limiting plate and a lower limiting plate respectively, an elastic supporting structure is arranged between the lower limiting plate and the protective outer pipe, the left side end edge and the right side end edge of each limiting plate are each provided with an outwards-turned edge, the turned edge of the lower limiting plate is provided with a guide sleeve, and the turned edge of the upper limiting plate is rotationally provided with a guide lock rod. A thread assembly section is arranged between the guide sleeve and the guide lock rod; a spring is installed between the two limiting plates in a jacking mode, an operation hole is formed in the protective outer pipe, the axis of the operation hole is consistent with the axis of the guide lock rod, and a sealing cover is detachably plugged on the operation hole. And the device can adapt to various pipeline protections of different types and different forms.

Description

Technical Field

[0001] The utility model relates to the technical field of electric power, in particular to a protective pipe for underground pipelines. Background Art

[0002] In the electric power field, buried power pipes are widely used. The pipes are products that are hot-dip-molded with PE (modified polyethylene) or coated inside and outside with epoxy resin. When used underground, they are often easily squeezed by external forces and cause distortion or even crushing, resulting in compression and damage to the cables inside the pipes. Utility Model Content

[0003] The utility model aims to provide a protective pipe for underground pipelines, so as to solve the problem in the prior art that the pipe body of the underground pipelines is easily crushed, twisted and collapsed, resulting in damage to the cables.

[0004] In order to solve the above problems, the protective pipe for underground pipelines involved in the utility model adopts the following technical solutions:

[0005] A protective tube for buried pipelines comprises a protective outer tube extending in a front-to-back direction, wherein two upper and lower spaced-apart limit plates are installed in the protective outer tube, wherein the limit plates are arc-shaped plates, and two limit sleeves are relatively buckled to form a circular limit space for accommodating a tube body therebetween, wherein the two limit plates are defined as an upper limit plate and a lower limit plate, wherein an elastic supporting structure is provided between the lower limit plate and the protective outer tube, wherein the left and right side edges of the two limit plates are provided with outwardly turned edges, wherein a guide sleeve is provided on the edge of the lower limit plate, and a guide locking rod is rotatably mounted on the edge of the upper limit plate, and a threaded assembly section is provided between the guide sleeve and the guide locking rod; wherein a spring is installed on the top of the two limit plates, and an operating hole is provided on the protective outer tube, wherein the axis of the operating hole is consistent with the axis of the guide locking rod, and a cover is removably blocked on the operating hole.

[0006] Furthermore, the guide sleeve has a guide section and a threaded section, the diameter of the guide section is larger than the diameter of the threaded section, and a guide locking rod is rotatably assembled on the flap of the upper limit plate. The bottom end of the guide locking rod has a threaded rod, the guide locking rod is assembled with the guide section, and the threaded rod is threadedly connected to the threaded end to form a threaded assembly section.

[0007] Furthermore, an anti-slip structure is provided between the guide sleeve and the guide locking rod, and the anti-slip structure includes an inner edge extending inwardly from the top end of the guide sleeve, and the guide locking rod has a step surface, and the inner edge and the step surface of the guide locking rod are stopped at upper and lower limits to achieve anti-slip.

[0008] Furthermore, the spring sleeve is arranged on the guide sleeve.

[0009] Furthermore, the elastic support structure includes a spring tube arranged between the lower limit plate and the protective outer tube, a support rod is movably inserted in the spring tube, and a compression spring is installed between the support rod and the bottom wall of the spring tube section.

[0010] Furthermore, a rubber pad is attached to the buckling surface of the limiting plate.

[0011] The beneficial effects of the utility model are as follows: compared with the prior art, the protective pipe for buried pipelines involved in the utility model effectively protects the internal pipelines by providing an external protective outer pipe. At the same time, in order to avoid damage to the pipeline caused by crushing or twisting of the protective outer pipe, two limit plates are arranged inside the protective outer pipe. The elastic support of the two limit plates inside the protective outer pipe can realize elastic support of the pipeline, thereby increasing the activity space of the pipeline inside the protective outer pipe. At the same time, through the arrangement of the threaded matching sections of the guide sleeve and the guide screw on the upper limit plate and the lower limit plate, and the top-mounted design of the spring, the size of the limiting space between the two limit plates can be effectively increased when the pipeline is installed, which facilitates the passage of the pipeline. At the same time, through the design of the operating hole, the threaded locking operation of the guide locking rod and the limit sleeve can be facilitated, thereby ensuring the relative engagement between the limit plates and ensuring the tight connection between the limit plates and the pipeline. Furthermore, by means of the operation hole and the guide locking rod, it can meet the one-time installation of a relatively long pipeline, and can realize the clamping and fixing of the limit plate and the limit plate at various positions of the pipeline in the length direction of the pipeline, so as to avoid the pipeline from twisting, bending and other problems in the limit plate. It is highly practical and can adapt to many different types and forms of pipeline protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solution of the embodiment of the utility model, the following is a brief introduction to the drawings required for use in the embodiment:

[0013] Figure 1 This is a schematic structural diagram of a specific embodiment of the protective pipe for underground pipelines of the utility model;

[0014] Figure 2 for Figure 1 A partial enlarged view of the middle part;

[0015] Figure 3 for Figure 1 A partial enlarged view of point B in the middle;

[0016] Figure 4 for Figure 1 Left side partial sectional view.

[0017] Description of reference numerals:

[0018] 1-protective outer tube; 11-operation hole; 12-cover;

[0019] 2-upper limit plate; 21-guide locking rod; 22-threaded rod; 23-step surface;

[0020] 3-lower limit plate; 31-guide sleeve; 32-guide section; 33-threaded section; 34-accommodating groove; 35-welding nut; 36-inner edge;

[0021] 4-spring tube; 41-compression spring; 42-support rod;

[0022] 5-spring; 6-pipeline; 7-rubber pad. DETAILED DESCRIPTION

[0023] In order to make the technical purpose, technical solution and beneficial effects of the utility model clearer, the technical solution of the utility model is further described below in conjunction with the drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the utility model, that is, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. The components of the embodiments of the utility model described and shown in the drawings can be arranged and designed in various different configurations.

[0024] The specific embodiment of the underground pipeline protection pipe involved in the utility model is as follows: Figures 1 to 4 As shown, the protective pipe for buried pipelines includes a protective outer tube 1 extending along the front-to-back direction. In this embodiment, the protective outer tube 1 adopts a circular tube structure, which can be made of stainless steel or other plastic materials, etc., without specific limitation. The axis of the protective outer tube 1 extends along the front-to-back direction, and the front-to-back direction only refers to the relative position relationship, and is not limited to the absolute position during actual installation.

[0025] Two limit plates are installed in the protective outer tube 1 at intervals up and down. The limit plates are arc-shaped plates. The two limit sleeves are relatively buckled to form a circular limit space for accommodating the tube body. A rubber pad 7 is attached to the inner plate surface of the limit plate to cooperate with the outer wall of the pipeline 6 to achieve soft support and avoid rigid contact of the limit plate with the pipeline 6, which may cause excessive local pressure of the pipeline 6 and lead to pressure loss.

[0026] The two limit plates are defined as an upper limit plate 2 and a lower limit plate 3, respectively. An elastic support structure is provided between the lower limit plate 3 and the protective outer tube 1. As a preferred embodiment, the elastic support structure includes a spring tube 4 arranged between the lower limit plate 3 and the protective outer tube 1, a support rod 42 is movably inserted in the spring tube 4, a compression spring 41 is installed between the support rod 42 and the bottom wall of the spring tube 4, and a receiving groove 34 is correspondingly provided on the outer side wall of the lower limit plate 3, a welding nut 35 is fixed in the receiving groove 34, and the upper end thread of the support rod 42 is screwed on the welding nut 35 to achieve connection, and the elastic pushing of the support rod 42 by the compression spring 41 can achieve the stability of the lower limit plate 3 in the upper and lower directions in the protective outer tube 1.

[0027] As a preferred embodiment, there are three spring tubes 5 4, which are evenly spaced in the gap between the lower limit plate 3 and the protective outer tube 1, and the arrangement direction is along the circumference of the protective outer tube 1. At the same time, in order to avoid relative jamming between the support rod 42 and the spring tube 5 4, the diameter of the support rod 42 is smaller than the inner hole diameter of the spring tube 5 4, so as to adapt to the telescopic movement in the inclined direction.

[0028] The left and right side edges of the above-mentioned two limit plates are both provided with outward-turned edges, a guide sleeve 31 is provided on the edge of the lower limit plate 3, a guide lock rod 21 is rotatably mounted on the edge of the upper limit plate 2, and a threaded assembly section is provided between the guide sleeve 31 and the guide lock rod 21; a spring 5 is installed on the top between the two limit plates, specifically, in order to realize the connection between the guide lock rod 21 and the guide sleeve 31, a guide section 32 and a threaded section 33 are provided in the guide sleeve 31, the diameter of the guide section 32 is larger than the diameter of the threaded section 33, a guide lock rod 21 is rotatably mounted on the edge of the upper limit plate 2, the bottom end of the guide lock rod 21 has a threaded rod 22, the guide lock rod 21 is guided and assembled with the guide section 32, and the threaded rod 22 is threadedly connected with the threaded end to form a threaded assembly section. Furthermore, in order to realize a compact design of the structure, the spring 5 is sleeved on the guide sleeve 31.

[0029] As a preferred embodiment, in order to ensure the axial limitation of the upper limit plate 2 and the lower limit plate 3 before the pipeline 6 is installed to prevent the two from loosening, an anti-slip structure is provided between the guide sleeve 31 and the guide locking rod 21. The anti-slip structure includes an inner edge 36 extending inwardly from the top end of the guide sleeve 31, and the guide locking rod 21 has a step surface 23. The inner edge 36 and the step surface 23 are stopped by upper and lower limit stops to achieve anti-slip.

[0030] As a preferred embodiment, in order to facilitate workers to lock the pipeline 6 between the two limit plates, an operating hole 11 is opened on the protective outer tube 1, the axis of the operating hole 11 is consistent with the axis of the guide locking rod 21, and a cover 12 is removably sealed on the operating hole 11.

[0031] In actual use, the upper limit plate 2 is pushed by the spring 5 and is in a state of being separated from the lower limit plate 3. Due to the design of the anti-slip structure, the upper limit plate 2 will not be separated from the lower limit plate 3. After inserting the pipeline 6 into the gap between the upper limit plate 2 and the lower limit plate 3, the operator opens the cover 12, inserts the screwdriver into the operating hole 11, and operates the guide locking rod 21 to rotate, press the guide locking rod 21 down and screw it with the threaded section 33. After all the guide locking rods 21 are connected, the pipeline 6 can be fixed in the limited space, and the pipeline 6 can be installed. When receiving external pressure, the protective outer tube 1 is pre-bearing pressure and twisting occurs in time. Most of the pressure on the top is borne by the protective outer tube 1. The activity space of the pipeline 6 in the protective outer tube 1 can have a large margin due to the setting of the elastic support structure, meeting multiple protection functions.

[0032] Finally, it should be noted that the above embodiments are only used to illustrate but not to limit the technical solutions of the present invention, and any equivalent substitutions of the present invention and any modifications or partial substitutions that do not depart from the spirit and scope of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. A protective pipe for underground pipelines, characterized in that: It includes a protective outer tube extending in the front-to-back direction, and two limit plates arranged at intervals up and down are installed in the protective outer tube, the limit plates are arc-shaped plates, and the two limit sleeves are relatively buckled to form a circular limit space for accommodating the tube body therebetween, and the two limit plates are defined as an upper limit plate and a lower limit plate, and an elastic supporting structure is provided between the lower limit plate and the protective outer tube, and the left and right side edges of the two limit plates both have outward-turned edges, and a guide sleeve is provided on the edge of the lower limit plate, and a guide locking rod is rotatably mounted on the edge of the upper limit plate, and a threaded assembly section is provided between the guide sleeve and the guide locking rod; a spring is installed on the top between the two limit plates, and an operating hole is opened on the protective outer tube, and the axis of the operating hole is consistent with the axis of the guide locking rod, and a cover is removably blocked on the operating hole.

2. The protective pipe for underground pipeline according to claim 1, characterized in that: The guide sleeve has a guide section and a threaded section, the diameter of the guide section is larger than the diameter of the threaded section, a guide locking rod is rotatably assembled on the flap of the upper limit plate, the bottom end of the guide locking rod has a threaded rod, the guide locking rod is guide-assembled with the guide section, and the threaded rod is threadedly connected with the threaded end to form a threaded assembly section.

3. The underground pipeline protection pipe according to claim 2, characterized in that: An anti-slip structure is provided between the guide sleeve and the guide locking rod, and the anti-slip structure includes an inner edge extending inwardly from the top end of the guide sleeve, and the guide locking rod has a step surface, and the inner edge and the step surface of the guide locking rod are stopped at upper and lower limits to achieve anti-slip.

4. The underground pipeline protection pipe according to claim 3, characterized in that: The spring sleeve is arranged on the guide sleeve.

5. The underground pipeline protection pipe according to any one of claims 1 to 4, characterized in that: The elastic support structure comprises a spring tube arranged between the lower limit plate and the protective outer tube, a support rod is movably inserted in the spring tube, and a compression spring is installed between the support rod and the bottom wall of the spring tube section.

6. The underground pipeline protection pipe according to any one of claims 1 to 4, characterized in that: A rubber pad is attached to the buckling surface of the limiting plate.

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