Flexible pull rod for maintenance

Abstract

The application relates to the technical field of power maintenance pull rods, in particular to a flexible pull rod for maintenance, which comprises two insulating rods, a metal sleeve is fixedly sleeved at one end of the insulating rod, elastic plastic traction columns are arranged between the two insulating rods, a plurality of elastic plastic connecting columns are fixed between the two insulating rods, and a limiting sleeve is sleeved on the rod body of one insulating rod; the pull rod has the characteristics of flexibility and bendability by arranging the elastic plastic traction columns between the two insulating rods and sleeving and fixing rubber sleeves on the outer sides of the elastic plastic traction columns. When facing complex working environments and diversified operation requirements, the angle and shape can be flexibly adjusted, the target position can be smoothly reached, and operation can be completed. For example, in a maintenance scene with narrow space and obstacles, the pull rod can be bent according to actual conditions to avoid the obstacles, so that the feasibility and efficiency of operation are improved.

Description

Technical Field

[0001] The present invention relates to the field of power maintenance pull rods, and specifically to a flexible pull rod for maintenance. Background Art

[0002] In operation scenarios such as power maintenance, pull rod tools are often required to complete various pulling, positioning and other operations. The traditional pull rod structure is usually relatively simple, mostly rigid structures. Such rigid pull rods have many limitations in actual use: Due to being rigid structures, when facing some complex working environments or operations that require a certain angle adjustment, they cannot adapt flexibly and are difficult to meet diverse operation requirements. For example, in some maintenance scenarios with narrow spaces and obstacles, rigid pull rods may not be able to reach the target position smoothly or operate at the required angle. When subjected to external force impacts or need to withstand a certain degree of deformation, rigid pull rods are prone to damage, affecting their service life and the reliability of operations. For instance, when encountering accidental collisions or needing to temporarily change the shape to meet special operation requirements, rigid pull rods may experience problems such as fracture and deformation, resulting in operation interruption or even safety accidents. The components such as the pulling handle of traditional pull rods are usually fixedly connected to the main body. When it is necessary to replace pulling handles of different shapes or specifications according to different operation requirements, the operation is cumbersome, requiring the aid of special tools, consuming a large amount of time and manpower, and reducing the operation efficiency. Summary of the Invention

[0003] The purpose of the present invention is to provide a flexible pull rod for maintenance to solve the problems raised in the above background art.

[0004] To achieve the above purpose, the present invention provides the following technical solution: A flexible pull rod for maintenance, comprising two insulating rods. A metal sleeve is sleeved and fixed at one end of each insulating rod. An elastic plastic traction column is installed between the two insulating rods, and a plurality of elastic plastic connecting columns are fixed between the two insulating rods. A limiting sleeve is sleeved on the rod body of one insulating rod; On the metal sleeve at the end of the other insulating rod, a connecting handle is fixed. A plurality of inserting handles are inserted into the side wall of the connecting handle. A retaining ring is sleeved and screwed at one end of the connecting handle, and the retaining ring pushes the inserting handles to be inserted on the surface of the pulling handle.

[0005] Preferably, reserved grooves are provided at the adjacent ends of the two insulating rods. The reserved grooves are "convex"-shaped circular grooves. The elastic plastic connecting columns are "I"-shaped cylinders. The two ends of the elastic plastic connecting columns are respectively inserted into the reserved grooves at the ends of the two insulating rods. A rubber sleeve is sleeved on the outer side of the elastic plastic traction column, and the rubber sleeve is fixed between the two insulating rods.

[0006] Preferably, the elastic plastic connecting columns are "I"-shaped cylinders, and a plurality of elastic plastic connecting columns are distributed in a circular pattern with the elastic plastic traction column as the central axis.

[0007] Preferably, a picking groove is formed on the outer wall of the limiting sleeve. The picking groove is an annular groove. Two clamping grooves are formed on the inner wall of the limiting sleeve. The clamping grooves are annular grooves. Two rubber rings are sleeved and fixed on the rod body of the insulating rod. The rubber rings are matched with the clamping grooves.

[0008] Preferably, after the limiting sleeve is sleeved on the ends of the two insulating rods, one rubber ring at the end of each of the two insulating rods is inserted into the corresponding clamping groove.

[0009] Preferably, the connecting handle is a "convex"-shaped circular ring plate. A plurality of jacks are formed on the surface of the connecting handle. A rubber clamping ring is fixed on the inner ring surface of the connecting handle. The outer ring surface of the rubber clamping ring covers the plurality of jacks. The plug handles and the jacks correspond to each other one by one, and the plug handles are inserted into the jacks. One end of the plug handle is fixed on the outer ring surface of the rubber clamping ring, and the width of the plug handle is greater than the depth of the jack.

[0010] Preferably, an inclined surface is provided at the other end of the plug handle. External threads are provided on the outer wall of the connecting handle. Internal threads are provided on the inner wall of the retaining ring. The internal threads and the external threads are in threaded connection. A rubber gasket is fixed on the surface of the connecting handle. The rubber gasket is elastically deformed when clamped between the connecting handle and the retaining ring.

[0011] Preferably, a plugging groove is formed at one end of the pulling handle. The plugging groove is an annular groove. After the retaining ring pushes the plug handle, one end of the plug handle is inserted into the plugging groove, and the rubber clamping ring is clamped between the plug handle and the plugging groove.

[0012] Preferably, two elastic hanging pieces are fixed on the outer wall of the retaining ring. The elastic hanging pieces are arc-shaped pieces. A plug bar is fixed at one end of the elastic hanging piece. A positioning groove is formed on the outer wall of the connecting handle. The positioning groove is an annular groove. The plug bar is inserted into the positioning groove. A pull ring is fixed on the surface of the elastic hanging piece. The pull ring and the plug bar are symmetrically distributed with respect to the elastic hanging piece.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: The flexible pulling rod for maintenance proposed by the present invention has the characteristics of flexibility and bendability by installing an elastic plastic traction column between two insulating rods and sleeving and fixing a rubber sleeve outside it. When facing complex working environments and diverse operation requirements, it can flexibly adjust the angle and shape, smoothly reach the target position and complete the operation. For example, in a maintenance scenario with a narrow space and obstacles, the pulling rod can be bent according to the actual situation to avoid obstacles, improving the feasibility and efficiency of the operation.

[0014] The outer wall of the limiting sleeve has an annular slot for easy gripping and movement by the operator; the inner wall has two annular slots to match the rubber rings fixed on the insulating rods. By simultaneously fitting the limiting sleeve onto the ends of two insulating rods, and inserting the rubber rings into the corresponding slots, the relative position of the two insulating rods is restricted, preventing bending at the joint. This design also makes the installation and removal of the limiting sleeve very convenient, allowing the operator to quickly adjust its position as needed.

[0015] A connecting handle is fixed to a metal sleeve at the end of another insulating rod. Multiple inserts are inserted into the side wall of the connecting handle, and a screw-on retaining ring is fitted to one end. The retaining ring pushes the inserts into the insertion grooves on the surface of the pulling handle, and a rubber clamping ring holds the insert between the insert and the insertion groove, achieving a secure connection between the pulling handle and the connecting handle. When the pulling handle needs to be replaced, simply pinch the pull rings on both sides with both hands, stretching the corresponding elastic clips to deform them, causing the insert to be pulled out of the positioning groove. Then, rotate the retaining ring to unscrew it from the end of the connecting handle. At this time, the rubber clamping ring springs back, pulling the insert out of the insertion groove, allowing the pulling handle to be pulled away from the connecting handle and replaced. The entire replacement process is simple and quick, requiring no special tools, greatly saving time and manpower, and improving work efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 for Figure 1 Sectional view of the structure at point AA; Figure 3 for Figure 2 Enlarged schematic diagram of the structure at point B; Figure 4 for Figure 2 Enlarged schematic diagram of the structure at point C; Figure 5 This is a schematic diagram of the retaining ring structure of the present invention; Figure 6 This is a schematic diagram of the connection structure between the insulating rod and the elastic plastic traction column of the present invention; Figure 7 This is a schematic diagram of the limiting sleeve structure of the present invention.

[0017] In the diagram: Insulating rod 1, metal sleeve 101, reserved groove 102, rubber ring 103, elastic plastic traction column 2, rubber sleeve 201, elastic plastic connecting column 202, limiting sleeve 3, card groove 301, connecting handle 4, rubber clamping ring 401, insertion hole 402, insertion handle 403, retaining ring 404, positioning groove 405, rubber gasket 406, pulling handle 5, insertion groove 501, elastic hanging piece 6, insertion strip 601, pull ring 602. Detailed Implementation

[0018] In order to clearly and completely describe the objectives, technical solutions of the present invention, and make the advantages more clearly understood, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, rather than all embodiments. They are only used to explain the embodiments of the present invention and are not used to limit the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0019] Please refer to Figures 1-7 , the present invention provides a technical solution: a flexible pull rod for maintenance, including two insulating rods 1. A metal sleeve 101 is sleeved and fixed at one end of the insulating rod 1. An elastic plastic traction column 2 is installed between the two insulating rods 1, and a plurality of elastic plastic connecting columns 202 are fixed between the two insulating rods 1. A limiting sleeve 3 is sleeved on the rod body of one insulating rod 1; a reserved groove 102 is opened at each adjacent end of the two insulating rods 1. The reserved groove 102 is a "convex"-shaped circular groove. The elastic plastic connecting column 202 is an "I"-shaped cylinder. The two ends of the elastic plastic connecting column 202 are respectively inserted into the reserved grooves 102 at the ends of the two insulating rods 1. A rubber sleeve 201 is sleeved on the outer side of the elastic plastic traction column 2. The rubber sleeve 201 is fixed between the two insulating rods 1. The elastic plastic connecting column 202 is an "I"-shaped cylinder. The plurality of elastic plastic connecting columns 202 are distributed in a circular pattern centered on the elastic plastic traction column 2; an extraction groove is opened on the outer wall of the limiting sleeve 3. The extraction groove is an annular groove. Two clamping grooves 301 are opened on the inner wall of the limiting sleeve 3. The clamping grooves 301 are annular grooves. Two rubber rings 103 are sleeved and fixed on the rod body of the insulating rod 1. The rubber rings 103 are matched with the clamping grooves 301; after the limiting sleeve 3 is sleeved on the ends of the two insulating rods 1, one rubber ring 103 at the ends of the two insulating rods 1 is inserted into the corresponding clamping groove 301.

[0020] It should be noted that the method for setting the reserved groove 102 is as follows: after opening a circular groove at the end of the insulating rod 1, fix an annular plate at the notch of the circular groove. This annular plate is pre-sleeved on the column body of the elastic plastic traction column 2. After the end of the elastic plastic traction column 2 is inserted into the circular groove,拨动 the annular plate to fix it in the notch of the circular groove. In this way, the elastic plastic traction column 2 is connected between the two insulating rods 1 to play a flexible and bendable role. The addition of the elastic plastic connecting column 202 improves the connection firmness between the two insulating rods 1 and satisfies the deformation between the two insulating rods 1.

[0021] In order to facilitate the replacement of the pulling handle 5, it is proposed that: Another insulating rod 1 is fixed with a connecting handle 4 on the metal sleeve 101 at the end. A plurality of plug handles 403 are inserted into the side wall of the connecting handle 4. One end of the connecting handle 4 is sleeved and screwed with a retaining ring 404. The retaining ring 404 pushes the plug handle 403 to be inserted on the surface of the pulling handle 5. The connecting handle 4 is a "convex"-shaped circular ring plate. A plurality of jacks 402 are opened on the surface of the connecting handle 4. A rubber clamping ring 401 is fixed on the inner ring surface of the connecting handle 4. The outer ring surface of the rubber clamping ring 401 covers a plurality of jacks 402. The plug handle 403 and the jack 402 correspond to each other one by one, and the plug handle 403 is inserted into the jack 402. One end of the plug handle 403 is fixed on the outer ring surface of the rubber clamping ring 401, and the width of the plug handle 403 is greater than the depth of the jack 402. The other end of the plug handle 403 is provided with an inclined surface. The outer wall of the connecting handle 4 is provided with an external thread, and the inner wall of the retaining ring 404 is provided with an internal thread. The internal thread and the external thread are connected in cooperation. A rubber gasket 406 is fixed on the surface of the connecting handle 4. The rubber gasket 406 is clamped between the connecting handle 4 and the retaining ring 404 and undergoes elastic deformation. One end of the pulling handle 5 is provided with a plug slot 501. The plug slot 501 is an annular slot. After the retaining ring 404 pushes the plug handle 403, one end of the plug handle 403 is inserted into the plug slot 501, and the rubber clamping ring 401 is clamped between the plug handle 403 and the plug slot 501. Two elastic hanging pieces 6 are fixed on the outer wall of the retaining ring 404. The elastic hanging pieces 6 are circular arc-shaped pieces. One end of the elastic hanging piece 6 is fixed with an insertion strip 601. An annular positioning groove 405 is opened on the outer wall of the connecting handle 4. The insertion strip 601 is inserted into the positioning groove 405. A pull ring 602 is fixed on the surface of the elastic hanging piece 6. The pull ring 602 and the insertion strip 601 are symmetrically distributed with respect to the elastic hanging piece 6.

[0022] It should be noted that Figure 1 The pulling handle 5 shown in Figure 1 is in the shape of "up". In actual use, pulling handles 5 with a Chinese character "wan" head, a U-shaped head, and a swan neck head are also configured. Only the top shape of the pulling handle 5 is different, and one end of each pulling handle 5 is provided with a plug slot 501. The matching pulling handle 5 can be replaced according to actual needs. When replacing, pinch the two pull rings 602 with both hands, stretch the corresponding elastic hanging piece 6 to deform. After the elastic hanging piece 6 pulls the insertion strip 601 out of the positioning groove 405, rotate the retaining ring 404 and unscrew it from the end of the connecting handle 4. At this time, the rubber clamping ring 401 rebounds and pulls the plug handle 403 to move outward from the connecting handle 4, that is, the plug handle 403 is pulled out of the plug slot 501, and the pulling handle 5 can be pulled out of the connecting handle 4 and replaced.

[0023] Usage method of the flexible pulling rod for maintenance: A circular groove is opened at the end of the insulating rod 1, and the annular plate pre - sleeved on the column body of the elastic plastic traction column 2 is fixed at the notch of the circular groove, so that the end of the elastic plastic traction column 2 is inserted into the circular groove, completing the connection between the elastic plastic traction column 2 and the two insulating rods 1, playing a role of flexible bending. "Convex" - shaped circular grooves are opened at one end of each of the two adjacent insulating rods 1 as reserved grooves 102, and both ends of the "I" - shaped cylindrical elastic plastic connecting column 202 are respectively inserted into the reserved grooves 102 at the ends of the two insulating rods 1. Multiple elastic plastic connecting columns 202 are distributed in a circular pattern with the elastic plastic traction column 2 as the central axis, enhancing the connection firmness between the two insulating rods 1 and meeting the deformation between the two insulating rods 1. Rotate the retaining ring 404 to push the insertion handle 403, so that one end of the insertion handle 403 is inserted into the insertion slot 501, and the rubber clamping ring 401 is clamped between the insertion handle 403 and the insertion slot 501. Insert the insertion strip 601 into the positioning slot 405 to complete the installation of the elastic hanging piece 6. A pull - ring 602 is fixed on the surface of the elastic hanging piece 6, and the pull - ring 602 and the insertion strip 601 are symmetrically distributed with respect to the elastic hanging piece 6. When it is necessary to replace the pulling handle 5 according to actual needs, pinch the two pull - rings 602 on both sides with both hands, stretch the corresponding elastic hanging piece 6 to make it deformed, and the elastic hanging piece 6 pulls the insertion strip 601 out of the positioning slot 405. Rotate the retaining ring 404 and screw the retaining ring 404 off from the end of the connecting handle 4. At this time, the rubber clamping ring 401 rebounds and pulls the insertion handle 403 to move outward from the connecting handle 4, that is, the insertion handle 403 is pulled out of the insertion slot 501. Pull the pulling handle 5 out of the connecting handle 4 and replace it with a matching pulling handle 5 (in actual use, pulling handles 5 with different top shapes such as "upper" - shaped, swastika - headed, U - headed, and swallow - tailed are configured, as long as one end is provided with an insertion slot 501). According to the above connection steps of the pulling handle 5 and the connecting handle 4, install the new pulling handle 5 on the connecting handle 4.

[0024] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A flexible pull rod for maintenance, comprising two insulating rods (1), one end of which is fitted with a metal sleeve (101), characterized in that: An elastic plastic traction column (2) is installed between the two insulating rods (1), and a plurality of elastic plastic connecting columns (202) are fixed between the two insulating rods (1). A limiting sleeve (3) is sleeved on the rod body of one insulating rod (1); On the metal sleeve (101) at the end of the other insulating rod (1), a connecting handle (4) is fixed. A plurality of inserting handles (403) are inserted into the side wall of the connecting handle (4). One end of the connecting handle (4) is sleeved and screwed with a retaining ring (404). The retaining ring (404) pushes the inserting handle (403) to be inserted on the surface of the pulling handle (5).

2. The flexible pull rod for maintenance according to claim 1, characterized in that: Reserved grooves (102) are formed at the adjacent ends of the two insulating rods (1). The reserved grooves (102) are "convex”-shaped circular grooves. The elastic plastic connecting columns (202) are "I”-shaped cylinders. The two ends of the elastic plastic connecting columns (202) are respectively inserted into the reserved grooves (102) at the ends of the two insulating rods (1). A rubber sleeve (201) is sleeved on the outer side of the elastic plastic traction column (2), and the rubber sleeve (201) is fixed between the two insulating rods (1).

3. The flexible pull rod for maintenance according to claim 1, characterized in that: The elastic plastic connecting columns (202) are "I”-shaped cylinders, and a plurality of elastic plastic connecting columns (202) are distributed in a circumferential manner with the elastic plastic traction column (2) as the central axis.

4. A flexible pull rod for maintenance according to claim 1, characterized in that: An extracting groove is formed on the outer wall of the limiting sleeve (3). The extracting groove is an annular groove. Two clamping grooves (301) are formed on the inner wall of the limiting sleeve (3). The clamping grooves (301) are annular grooves. Two rubber rings (103) are sleeved and fixed on the rod body of the insulating rod (1), and the rubber rings (103) are matched with the clamping grooves (301).

5. A flexible pull rod for maintenance according to claim 4, characterized in that: After the limiting sleeve (3) is sleeved on the ends of the two insulating rods (1) at the same time, one rubber ring (103) at the end of the two insulating rods (1) is inserted into the corresponding clamping groove (301).

6. A flexible pull rod for maintenance according to claim 1, characterized in that: The connecting handle (4) is a "convex”-shaped circular ring plate. A plurality of inserting holes (402) are formed on the surface of the connecting handle (4). A rubber clamping ring (401) is fixed on the inner ring surface of the connecting handle (4). The outer ring surface of the rubber clamping ring (401) covers the plurality of inserting holes (402). The inserting handles (403) and the inserting holes (402) correspond to each other one by one, and the inserting handles (403) are inserted into the inserting holes (402). One end of the inserting handle (403) is fixed on the outer ring surface of the rubber clamping ring (401), and the width of the inserting handle (403) is greater than the depth of the inserting hole (402).

7. A flexible pull rod for maintenance according to claim 6, characterized in that: One end of the inserting handle (403) is provided with an inclined surface. External threads are provided on the outer wall of the connecting handle (4). Internal threads are provided on the inner wall of the retaining ring (404). The internal threads and the external threads are in threaded connection. A rubber gasket (406) is fixed on the surface of the connecting handle (4), and the rubber gasket (406) is clamped between the connecting handle (4) and the retaining ring (404) and undergoes elastic deformation.

8. A flexible pull rod for maintenance according to claim 7, characterized in that: One end of the pulling handle (5) is provided with an inserting groove (501). The inserting groove (501) is an annular groove. After the retaining ring (404) pushes the inserting handle (403), one end of the inserting handle (403) is inserted into the inserting groove (501), and the rubber clamping ring (401) is clamped between the inserting handle (403) and the inserting groove (501).

9. A flexible pull rod for maintenance according to claim 1, characterized in that: Two elastic hanging pieces (6) are fixed to the outer wall of the retaining ring (404). The elastic hanging pieces (6) are arc-shaped pieces. One end of the elastic hanging pieces (6) is fixed with a strip (601). The outer wall of the connecting handle (4) is provided with a positioning groove (405). The positioning groove (405) is an annular groove. The strip (601) is inserted into the positioning groove (405). A pull ring (602) is fixed to the surface of the elastic hanging pieces (6). The pull ring (602) and the strip (601) are symmetrically distributed about the elastic hanging pieces (6).

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