A cable arrangement for inside a telescopic joint

Abstract

The utility model discloses a kind of cable arrangement structures for telescopic joint inside, it include: fixed section;Telescopic section, contain the multiple telescopic joints of sequentially nested along first direction, wherein first telescopic joint is movably nested in fixed section, the telescopic joint of remaining each level is sequentially nested in the telescopic joint of previous level;Telescopic assembly is configured as: when first telescopic joint is telescopic motion along first direction relative to fixed section, the telescopic joint of remaining each level is synchronously telescopic relative to the telescopic joint of previous level along the same direction through preset telescopic guide structure;Limiting structure includes the limiting block of being arranged in the upper portion of fixed section and each telescopic joint inside, limiting block has the first wire hole and second wire hole being passed through being set;The utility model can solve the cable in the telescopic process in traditional telescopic joint lacks guiding mechanism, cause cable repeatedly bending and bear uneven stress, easy to accelerate skin aging, even cause short circuit problem.

Description

Technical Field

[0001] This utility model relates to the field of telescopic devices, specifically to a cable arrangement structure for use inside an expansion joint. Background Technology

[0002] In the field of industrial automated spraying, the three-axis gantry crane system is the core equipment for handling large workpieces (such as fan stator housings and spherical structures). By controlling the precise movement of the painting robot in three-dimensional space, it achieves efficient and uniform coating coverage. This system typically relies on multiple telescopic joints to extend the vertical working range of the painting robot. The cables (such as power cables, control signal lines, air pipes, oil pipes, and wire feed lines) need to extend and retract synchronously with the telescopic joints to ensure the continuous operation of the painting robot. However, the lack of a guiding mechanism for the cables during extension and retraction causes them to be subjected to uneven stress due to repeated bending caused by the telescopic joints, which can accelerate the aging of the outer sheath and even lead to short circuits. Utility Model Content

[0003] To overcome the above-mentioned shortcomings, the purpose of this utility model is to provide a cable arrangement structure for the inside of an expansion joint.

[0004] To achieve the above objectives, the technical solution adopted by this utility model includes: a fixed section; a telescopic section comprising multiple levels of telescopic joints nested sequentially along a first direction, wherein the first-level telescopic joint is movably nested within the fixed section, and the remaining telescopic joints are nested sequentially within the preceding level telescopic joint; the telescopic component is configured such that when the first-level telescopic joint moves telescopically relative to the fixed section along the first direction, the remaining telescopic joints simultaneously telescopically move relative to the preceding level telescopic joint in the same direction through a preset telescopic guide structure; a limiting structure including a limiting block disposed above the fixed section and each telescopic joint, the limiting block having a through-hole for a first wire and a second wire, allowing the cable to pass through the bottom and top of the first wire through hole, and through the top and bottom of the second wire through hole, to overcome the torsional stress of the cable.

[0005] In the preferred embodiment of the above-mentioned cable arrangement structure for the inside of the expansion joint, the expansion segment has a first expansion joint, a second expansion joint, and a third expansion joint that are nested together in a first direction, with the first expansion joint nested within the fixed segment.

[0006] In the preferred embodiment of the above-mentioned cable arrangement structure inside the expansion joint, the U-shaped section of the cable inside the fixed section is fitted with a U-shaped sleeve, and the sleeve is provided with a counterweight for applying a downward pulling force to the cable.

[0007] In the preferred embodiment of the cable arrangement structure inside the expansion joint described above, a U-shaped sheath connecting the first cable passage hole and the second cable passage hole is provided above each of the limiting blocks.

[0008] In the preferred embodiment of the above-mentioned cable arrangement structure for the inside of the expansion joint, the sleeve and sheath are made of hard metal or wear-resistant hard plastic.

[0009] In the preferred embodiment of the above-mentioned cable arrangement structure inside the expansion joint, the cables inside the first and second expansion joints are arranged inside the cable chain.

[0010] In the preferred embodiment of the cable arrangement structure inside the expansion joint described above, the cable inside the third expansion joint is placed inside a corrugated pipe.

[0011] In the preferred embodiment of the above-mentioned cable arrangement structure for the inside of the expansion joint, the telescopic guide structure includes a first traction rope with both ends connected to the lower inner side of the fixed section and the top of the second expansion joint, and a second traction rope with both ends connected to the lower inner side of the first expansion joint and the top of the third expansion joint, wherein the first traction rope passes around the top of the first expansion joint and the second traction rope passes around the top of the second expansion joint.

[0012] In the preferred embodiment of the cable arrangement structure inside the expansion joint described above, a first guide wheel is provided above the first expansion joint for the first traction rope to pass through, and a second guide wheel is provided above the second expansion joint for the second traction rope to pass through.

[0013] In the preferred embodiment of the cable arrangement structure inside the expansion joint described above, the expansion guide structure further includes guide rollers disposed at the upper corners of the first expansion joint, the second expansion joint, and the third expansion joint.

[0014] The beneficial effect of this utility model is that by passing the cable through the limiting block on the corresponding fixed section and the expansion joint, the cable can be turned and reversed in each expansion joint, so as to overcome the torsional stress when the cable expands and contracts in each expansion joint, and ensure that the cable can be smoothly stored or unfolded in the fixed section and each expansion joint, thus realizing the storage of a long cable in a shorter space. Attached Figure Description

[0015] Figure 1 This is the front view of the present invention; Figure 2 This is a schematic diagram showing each expansion joint being pulled. Figure 3 This is a schematic diagram of the second expansion joint; Figure 4 This is a schematic diagram showing the cable placed within a fixed section. Figure 5 Diagram showing the connection relationship between the cable and the limit block; In the diagram: Fixed section 1, telescopic section 2, first telescopic joint 21, second telescopic joint 22, third telescopic joint 23, limiting structure 3, limiting block 31, first wire passage hole 311, second wire passage hole 312, sleeve 4, counterweight 5, first traction rope 61, second traction rope 62, first guide wheel 63, second guide wheel 64, guide roller 65, cable 7, painting device 8. Detailed Implementation

[0016] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0017] It should be noted that in the description of this utility model, terms such as "upper," "lower," "left," "right," "front," and "rear," which indicate direction or positional relationships, are based on the direction or positional relationships shown in the accompanying drawings. These are used merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0018] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "set," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0019] like Figures 1 to 5 As shown, the cable 7 arrangement structure inside the expansion joint of this utility model includes: a fixed section 1; an expansion section 2, comprising multiple levels of expansion joints nested sequentially along a first direction, wherein the first-level expansion joint is movably nested within the fixed section 1, and the remaining expansion joints are nested sequentially within the previous-level expansion joint; the expansion component is configured such that when the first-level expansion joint moves in and out relative to the fixed section 1 along the first direction, the remaining expansion joints simultaneously move in and out relative to the previous-level expansion joint along the same direction through a preset expansion guide structure; a limiting structure 3, including a limiting block 31 disposed above the fixed section 1 and each expansion joint, the limiting block 31 having a through-hole 311 and a second through-hole 312, so that the cable 7 enters through the bottom and exits through the top of the first through-hole 311, and enters through the top and exits through the bottom of the second through-hole 312, thereby overcoming the torsional stress of the cable 7.

[0020] See Figure 1 , Figure 4 , Figure 5The limiting block 31 is set above the inside of the fixed section 1 and each level of expansion joint. The limiting block 31 has a first wire passage hole 311 and a second wire passage hole 312 that pass through vertically. When the cable 7 is arranged in the fixed section 1 and each level of expansion joint, the cable 7 is first placed in the fixed section 1 in a U-shape. Then, the end of the cable 7 is pulled from bottom to top through the first wire passage hole 311. After that, the cable 7 is pulled from top to bottom through the second wire passage hole 312. This allows the cable 7 to be positioned by the limiting block 31 in the fixed section 1 when it turns and changes direction. This overcomes the torsional stress of the cable 7 in the fixed section 1 and avoids the problem of the cable 7 crossing and tangling when it expands and contracts in the fixed section 1. This ensures the continuity and orderliness of the cable 7 during the winding and unwinding process. Correspondingly, when cable 7 is arranged within each expansion joint, cable 7 within the corresponding expansion joint must pass through the first cable passage hole 311 and the second cable passage hole 312 of the corresponding limiting block 31, so that cable 7 can be turned and reversed within each expansion joint to overcome the torsional stress of cable 7 during expansion and contraction within each expansion joint. This arrangement constrains the position of cable 7 within the fixed section 1 and the expansion section 2, overcomes the torsional stress of cable 7, and ensures that cable 7 can be smoothly stored or deployed within the fixed section 1 and each expansion joint, thus enabling the storage of a longer cable 7 within a shorter space.

[0021] In one or more embodiments, the telescopic section 2 has a first telescopic joint 21, a second telescopic joint 22, and a third telescopic joint 23 nested together in a first direction, with the first telescopic joint 21 nested within the fixed section 1. The lower end of the third telescopic joint 23 is used to connect to a painting device 8, which may be a paint spray head controlled by a robotic arm. Cables 7 within the fixed section 1 and the telescopic section 2 are connected to the painting device 8.

[0022] In one or more embodiments, a U-shaped sleeve 4 is fitted over the U-shaped section of the cable 7 inside the fixed section 1, and a counterweight 5 is provided on the sleeve 4 for applying a downward pulling force to the cable 7.

[0023] See Figure 5 The portion of cable 7 inside the fixed section 1 that does not pass through the limiting block 31 has a U-shaped structure. A U-shaped sleeve 4 is fitted at this U-shaped section, and a counterweight 5 is added to the U-shaped sleeve 4 so that the sleeve 4 and the counterweight 5 can apply a downward pulling force to this U-shaped section of cable 7, thereby tightening the cable 7 in the fixed section 1 and the telescopic section 2, ensuring that the cable 7 can be smoothly stored or deployed in the fixed section 1 and each telescopic section.

[0024] In one or more embodiments, each of the limiting blocks 31 is provided with a U-shaped sheath connecting the first wire passage hole 311 and the second wire passage hole 312. The U-shaped sheath can further limit the cable 7 passing through the first wire passage hole 311 and the second wire passage hole 312 of the limiting block 31, and further improve the effect of overcoming the torsional stress of the cable 7.

[0025] In one or more embodiments, the sleeve 4 and the sheath are made of hard metal or wear-resistant hard plastic. This design can extend the service life of the sleeve 4 and the sheath and reduce the frequency of equipment maintenance.

[0026] In one or more embodiments, the cables 7 inside the first telescopic joint 21 and the second telescopic joint 22 are disposed inside the cable chain; the cables 7 inside the third telescopic joint 23 are placed inside a corrugated tube. This arrangement allows the cables 7 inside the first telescopic joint 21, the second telescopic joint 22, and the third telescopic joint 23 to be confined while ensuring the flexibility of the cables 7 when retracting or extending, and also reduces the degree of wear and tear on the cables 7 when they are stored.

[0027] In one or more embodiments, the telescopic guide structure includes a first traction rope 61 with both ends connected to the lower inner side of the fixed section 1 and the top of the second telescopic section 22, and a second traction rope 62 with both ends connected to the lower inner side of the first telescopic section 21 and the top of the third telescopic section 23, wherein the first traction rope 61 passes around the top of the first telescopic section 21, and the second traction rope 62 passes around the top of the second telescopic section 22; a first guide wheel 63 is provided above the first telescopic section 21 for the first traction rope 61 to pass through, and a second guide wheel 64 is provided above the second telescopic section 22 for the second traction rope 62 to pass through.

[0028] See Figure 2 , Figure 3 When the control cable 7 is retracted, the first telescopic section 21 is raised so that it enters the fixed section 1. The top of the first telescopic section 21 pushes the first traction rope 61 upward so that the lower end of the first traction rope 61 pulls the second telescopic section 22 upward, so that the second telescopic section 22 gradually enters the first telescopic section 21. At the same time, the top of the second telescopic section 22 pushes the second traction rope 62 upward so that the lower end of the second traction rope 62 pulls the third telescopic section 23 upward, so that the third telescopic section 23 gradually enters the second telescopic section 22. The first guide wheel 63 and the second guide wheel 64 can reduce the friction force experienced by the first traction rope 61 and the second traction rope 62 when they are pushed upward.

[0029] In one or more embodiments, the telescopic guide structure further includes guide rollers 65 disposed at the upper corners of the first telescopic joint 21, the second telescopic joint 22, and the third telescopic joint 23. See also Figure 2 , Figure 3 The first telescopic joint 21, the second telescopic joint 22 and the third telescopic joint 23 are all frame-shaped structures, and guide rollers 65 protruding from the four corners of their upper part are provided. The guide rollers 65 can reduce the friction of each telescopic joint during telescopic movement and ensure the stability of each telescopic joint during telescopic movement.

[0030] The above embodiments are only for illustrating the technical concept and features of this utility model. Their purpose is to enable those skilled in the art to understand the content of this utility model and implement it. They cannot be used to limit the protection scope of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be covered within the protection scope of this utility model.

Claims

1. A cable arrangement structure for use inside an expansion joint, characterized in that, include: Fixed section; The telescopic segment includes multiple levels of telescopic joints nested sequentially along a first direction, wherein the first level telescopic joint is movably nested within the fixed segment, and the remaining telescopic joints are nested sequentially within the previous level telescopic joint; the telescopic segment is configured such that when the first level telescopic joint moves telescopically relative to the fixed segment along the first direction, the remaining telescopic joints simultaneously move telescopically relative to the previous level telescopic joint along the same direction through a preset telescopic guide structure; The limiting structure includes a limiting block disposed above the inside of the fixed section and each expansion joint. The limiting block has a first wire passage hole and a second wire passage hole that are opened through it, so that the cable passes through the bottom of the first wire passage hole and exits through the top, and passes through the top of the second wire passage hole and exits through the bottom, so as to overcome the torsional stress of the cable.

2. The cable arrangement structure for the interior of an expansion joint according to claim 1, characterized in that: The telescopic segment has a first telescopic joint, a second telescopic joint, and a third telescopic joint that are nested together in a first direction, with the first telescopic joint nested within the fixed segment.

3. The cable arrangement structure for the interior of an expansion joint according to claim 1 or 2, characterized in that: The U-shaped section of the cable inside the fixed section is fitted with a U-shaped sleeve, and the sleeve is equipped with a counterweight for applying a downward pulling force to the cable.

4. The cable arrangement structure for the interior of an expansion joint according to claim 3, characterized in that: Each of the limiting blocks is provided with a U-shaped sheath connecting the first wire hole and the second wire hole.

5. The cable arrangement structure for the interior of an expansion joint according to claim 4, characterized in that: The sleeve and sheath are made of hard metal or wear-resistant hard plastic.

6. The cable arrangement structure for the interior of an expansion joint according to claim 2, characterized in that: The cables inside the first and second expansion joints are housed inside the cable chain.

7. The cable arrangement structure for the interior of an expansion joint according to claim 2, characterized in that: The cables inside the third expansion joint are placed inside a corrugated pipe.

8. The cable arrangement structure for the interior of an expansion joint according to claim 2, characterized in that: The telescopic guide structure includes a first traction rope with its two ends connected to the lower inner side of the fixed section and the top of the second telescopic section, and a second traction rope with its two ends connected to the lower inner side of the first telescopic section and the top of the third telescopic section, wherein the first traction rope passes around the top of the first telescopic section and the second traction rope passes around the top of the second telescopic section.

9. The cable arrangement structure for the interior of an expansion joint according to claim 8, characterized in that: A first guide wheel is provided above the first telescopic joint for the first traction rope to pass through, and a second guide wheel is provided above the second telescopic joint for the second traction rope to pass through.

10. The cable arrangement structure for the interior of an expansion joint according to claim 2, characterized in that: The telescopic guide structure also includes guide rollers located at the upper corners of the first telescopic joint, the second telescopic joint, and the third telescopic joint.

Images