Keel drag chain for supporting cable

Abstract

The utility model relates to the technical field of dust-free drag chains, and discloses a keel drag chain used for supporting a cable, the drag chain is composed of a plurality of joint blocks which are connected end to end, the clamping parts of every two adjacent joint blocks abut against stepped grooves, and the outer edges of the clamping seat parts of every two adjacent joint blocks abut against limiting parts; when the keel drag chain is bent, the abutting cavity of each joint block can limit the clamping part of the adjacent joint block, the rectangular groove of each joint block can limit the outer edge of the clamping seat part of the adjacent joint block, it is guaranteed that the abutting cavity and the rectangular groove provide supporting force at the same time, and then the bearing capacity between the joint blocks is improved; therefore, the drag chain has excellent supporting force, the rigidity and the stability of the drag chain can be effectively improved, and electric wires and pipelines in the drag chain are protected against damage.

Description

Technical Field

[0001] The utility model relates to the technical field of dust-free drag chains, in particular to a keel drag chain for supporting cables. Background Art

[0002] Drag chains, also known as cable protection drag chains, are devices that bind cables or wires or air and hydraulic pipes to facilitate their rotation and movement. Drag chains are used in reciprocating motion situations and can pull and protect built-in cables, oil pipes, air pipes, water pipes, etc. When binding cables, the drag chain is set on the outside of the cable to protect the reciprocating cable; therefore, in order to prevent the drag chain from sagging and swaying, a keel structure needs to be added inside the drag chain to support the drag chain, which can bear the weight of the cables and other components while maintaining the shape and stability of the drag chain.

[0003] Since the existing drag chain has a weak carrying capacity, the drag chain keel abutment position is often damaged during the process of the drag chain supporting the reciprocating motion of the cable, causing the cable to break during work, thereby causing problems such as reduced work efficiency.

[0004] In order to solve the problem that the abutment position of the drag chain keel is damaged and easy to break, the industry has conducted relevant research and design, such as a dust-free keel drag chain, the drag chain body includes multiple links and at least one link joint, the two ends of the link are respectively provided with a stopper and abutment, and the multiple links and the link joints are hinged in series with each other; wherein the multiple links can be bent, and in any two adjacent links, the stopper of one link can abut against the abutment of another link. In the dust-free keel drag chain of the utility model, the links are abutted against each other by the stopper and the abutment, so as to control the bending radius between the links, ensure that the dust-free keel drag chain does not deviate, and has a simple structure.

[0005] However, although the above-mentioned prior art improves the carrying capacity of the drag chain, since the chain links are connected by stoppers and abutments to form a keel drag chain, the drag chain may be deformed and damaged when carrying heavier cables and other components. Utility Model Content

[0006] The utility model is to overcome the technical problems existing in the prior art and is a keel drag chain for supporting cables.

[0007] In order to solve the above technical problems, the technical solution of the utility model is as follows:

[0008] A keel drag chain for supporting cables, comprising at least two connecting blocks connected end to end in sequence; the connecting block comprises a clamping portion and a clamping seat portion; the clamping portion and the clamping seat portion are respectively provided with a clamping hole and a clamping seat hole, the clamping seat portion is provided with an abutment cavity, the connecting portions of two adjacent connecting blocks are correspondingly inserted into the abutment cavity of the clamping seat portion, and the connecting holes and the clamping seat holes of two adjacent connecting blocks are connected and fixed by bolts;

[0009] Preferably, the top of the clamping portion is arranged in an inclined shape.

[0010] The clamping portion is further provided with a limiting portion, and the outer edges of the clamping seats of two adjacent engaging blocks abut against the limiting portion.

[0011] Furthermore, a stepped groove for limiting position is provided in the abutting cavity, and the clamping portion abuts against the stepped groove.

[0012] Furthermore, the clamping portion is provided with a guide groove, and the guide groove is in an inverted trapezoidal structure and is arranged on the upper part of the stepped groove.

[0013] Furthermore, the limiting portion is provided with a rectangular groove, the outer edge of the socket portion is in a strip shape, and the outer edge of the elongated socket portion is arranged in the rectangular groove of the limiting portion.

[0014] Furthermore, the abutting cavity is provided in a rectangular groove-shaped structure, and the abutting cavity is extended from an end of the socket portion away from the clamping portion toward a direction close to the clamping portion.

[0015] Furthermore, the width of the abutment cavity is greater than the thickness of the clamping portion.

[0016] Preferably, the width of the abutment cavity is greater than the thickness of the clamping portion by 2 mm.

[0017] Furthermore, the length of the drag chain composed of the plurality of end-to-end connected joining blocks is 18000mm-24000mm, and the arc radius is 120mm-3000mm.

[0018] Preferably, the maximum length of the drag chain formed by a plurality of end-to-end connected joining blocks is 24000 mm, and the minimum running arc radius is 120 mm.

[0019] Preferably, the cables include electrical cables, pipelines, electrical conduits, optical fibers, and the like.

[0020] Furthermore, a leather cover is provided on the outside of the keel composed of a plurality of joint blocks connected end to end, and the leather cover is an elliptical column structure.

[0021] Preferably, the leather case is made of rubber, artificial leather, cloth, etc.

[0022] Furthermore, the width of the rectangular groove is greater than the thickness of the end edge of the socket portion.

[0023] Compared with the prior art, the beneficial effects of the technical solution of the utility model are:

[0024] The drag chain is composed of a number of end-to-end connected joint blocks, the clamping parts of two adjacent joint blocks are in contact with the stepped groove, and the outer edges of the clamping seats of two adjacent joint blocks are in contact with the limiting parts; when the keel drag chain is bent and moved, the abutting cavity of the joint block can limit the clamping parts of the adjacent joint blocks, and the rectangular groove of the joint block can limit the outer edges of the clamping seats of the adjacent joint blocks, ensuring that the abutting cavity and the rectangular groove provide support force at the same time, thereby improving the bearing capacity between the joint blocks, so that the drag chain has excellent support force, which can effectively increase the rigidity and stability of the drag chain and protect the wires and pipes therein from damage;

[0025] The top of the clamping part is set in an inclined shape, and the width of the abutment cavity is greater than the thickness of the clamping part. It can reduce the convex telescopic movement of the drag chain surface when the drag chain is performing maximum bending work, and can also effectively prevent the drag chain from causing friction damage to the outer cable during bending movement; the maximum drag chain length composed of the coupling blocks is 24000mm, and the minimum operating arc radius is 120mm, which can reduce the friction between expansion and contraction when the drag chain moves, thereby improving the smoothness and stability of the drag chain's movement. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A schematic diagram of the structure of the joint block of the keel drag chain for supporting cables;

[0027] Figure 2 A cross-sectional view of a joint block of a keel drag chain for supporting cables;

[0028] Figure 3 A schematic diagram of the connection of multiple joint blocks;

[0029] Figure 4 Schematic diagram of connecting multiple joint blocks and holsters.

[0030] Among them, 1. engagement block; 2. clamping part; 3. clamping seat part; 4. abutment cavity; 5. clamping hole; 6. clamping seat hole; 7. bolt; 8. limiting part; 9. stepped groove; 10. guide groove; 11. rectangular groove; 12. leather cover. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme of the present application will be clearly and completely described below in conjunction with the drawings of the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. Based on the described embodiments, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0032] Unless otherwise defined, the technical terms or scientific terms used in this application should be understood by people with ordinary skills in the field to which this application belongs. "First", "second" and similar words used in this application do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0033] Example 1

[0034] like Figure 1-4 As shown, this embodiment discloses a keel drag chain supporting a cable, comprising at least two connecting blocks 1 connected end to end in sequence; the connecting block 1 comprises a clamping portion 2 and a clamping seat portion 3; the clamping portion 2 and the clamping seat portion 3 are respectively provided with a clamping hole 5 and a clamping seat hole 6, and the clamping seat portion 3 is provided with an abutment cavity 4, the clamping portions 2 of two adjacent connecting blocks 1 are correspondingly inserted into the abutment cavity 4 of the clamping seat portion 3, and the clamping holes 5 and the clamping seat holes 6 of two adjacent connecting blocks 1 are connected and fixed by bolts 7;

[0035] The clamping portion 2 is further provided with a limiting portion 8 , and the outer edges of the clamping portions 3 of two adjacent engaging blocks 1 abut against the limiting portion 8 .

[0036] As a specific implementation, a stepped groove 9 for limiting is provided in the abutting cavity 4, and the clamping portion 2 abuts against the stepped groove 9; the clamping portion 2 is provided with a guide groove 10, and the guide groove 10 is an inverted trapezoidal structure and is arranged on the upper part of the stepped groove 9;

[0037] The limiting portion 8 is provided with a rectangular groove 11, and the outer edge of the base portion 3 is in the shape of an elongated strip, and the outer edge of the elongated base portion 3 is arranged in the rectangular groove 11 of the limiting portion 8; the abutment cavity 4 is arranged in a rectangular groove-shaped structure, and the abutment cavity 4 extends from one end of the base portion 3 away from the clamping portion 2 to a direction close to the clamping portion 2.

[0038] During assembly, align the clamping portion 2 of the connecting block 1 with the clamping seat portion 3 of another connecting block 1, embed the clamping portion 2 of the connecting block 1 into the abutting cavity 4 of another connecting block 1, embed the clamping seat portion 3 of the connecting block 1 into the rectangular groove 11 of another connecting block 1, connect and fix the clamping holes 5 and the clamping seat holes 6 of two adjacent connecting blocks 1 with bolts 7, and then assemble according to the required installation length, and finally complete the splicing of the drag chain; ensure that the abutting cavity 4 and the rectangular groove 11 provide supporting force at the same time, thereby improving the bearing capacity between the connecting blocks, thereby improving the bearing capacity between adjacent connecting blocks 1, and improving the reliability of the keel drag chain.

[0039] When the keel drag chain bends, the abutment cavity 4 of the connecting block 1 can limit the clamping part 2 of the adjacent connecting block 1, and the rectangular groove 11 of the connecting block 1 can limit the outer edge of the socket part 3 of the adjacent connecting block 1, thereby resulting in the drag chain having excellent supporting force, which can effectively increase the rigidity and stability of the drag chain and protect the wires and pipes therein from damage.

[0040] When the drag chain is subjected to maximum bending, rotational movement will occur between adjacent joining blocks 1; since the clamping portion 2 of the joining block 1 is installed in the abutment cavity 4 of the adjacent joining block 1, the oblique side of the clamping portion 2 of the joining block 1 is parallel to the upper edge of the abutment cavity 4 of the adjacent joining block 1; the convex telescopic movement of the drag chain surface can be reduced when the drag chain is subjected to maximum bending, and since the drag chain sleeve is arranged on the outside of the cable, friction damage to the cable caused by the bending movement of the drag chain can be effectively avoided; the drag chain can also be freely changed in direction during vertical and horizontal movement, which is more flexible and suitable for different application scenarios; therefore, the inclined shape of the top of the clamping portion 2 plays a vital role in the performance and reliability of the drag chain.

[0041] When the drag chain is in maximum bending, rotational movement will occur between adjacent joint blocks 1. At this time, the rectangular groove 11 of the joint block 1 abuts against the outer edge of the holder portion 3 of the adjacent joint block 1 to limit the position, and friction between the rectangular groove 11 and the end edge of the holder portion 3 will occur.

[0042] It is necessary to provide a rounded corner on the end edge of the base portion 3, which can effectively reduce the friction and wear between the abutting rectangular groove 11 and the end edge of the base portion 3, so that the joint blocks 1 can slide against each other more smoothly, reducing energy loss and wear;

[0043] Similarly, providing rounded corners on the end edges of the clamping portion 2 of the coupling block 1 can effectively reduce the friction and wear between the abutting cavity 4 and the end edges of the clamping portion 2, allowing the coupling blocks 1 to slide against each other more smoothly, reducing energy loss and wear.

[0044] As a specific implementation, a leather cover 12 is provided on the outside of the keel composed of a plurality of end-to-end connected joint blocks 1, and the leather cover 12 is an elliptical column structure;

[0045] When assembling the leather cover 12 of the drag chain, connect several end-to-end connecting blocks 1, then open the leather cover 12, and pass the connected connecting blocks 1 through the interior of the leather cover 12; when the leather cover 12 and the connected connecting blocks 1 are matched to reach a suitable position, shrink the leather cover 12 to wrap the connecting blocks 1; finally, seal the leather cover 12 with Velcro to ensure that the leather cover 12 firmly wraps the connected connecting blocks 1.

[0046] Using the leather case 12 to cover the external device of the joint block 1 can have the following advantages:

[0047] 1. When the leather cover 12 needs to be shrunk to wrap around the joint block 1, the leather cover 12 can be continuously heated by a hot air gun. The molecules inside the rubber will expand due to the heat, but at the same time, the gaps between the molecules will be reduced, resulting in the overall shrinkage of the rubber material. This shrinkage can make the rubber leather cover 12 tightly wrap around the joint block 1 to form a tight seal.

[0048] 2. The leather cover 12 can play a certain protective role to prevent the joint block 1 from being scratched, collided, etc.;

[0049] 3. The leather cover 12 is placed on the external device of the connected joint block 1, which can effectively prevent the adjacent joint blocks 1 from causing friction damage to the cable during bending movement;

[0050] 4. The leather cover 12 can also enable the adjacent joint blocks 1 to freely change directions when performing vertical and horizontal movements, which is more flexible and suitable for different applications;

[0051] 5. The leather case 12 can also enhance the appearance of the drag chain peripherals, making them more beautiful and making people feel more comfortable;

[0052] 6. When rotational motion occurs between adjacent engagement blocks 1, the rubber leather cover 12 can effectively reduce the friction and wear between the engagement block 1 and the leather cover 12, allowing the engagement blocks 1 to slide against each other more smoothly, reducing energy loss and wear.

[0053] Example 2

[0054] like Figure 1-4 As shown, this embodiment discloses a keel drag chain supporting a cable, comprising at least two connecting blocks 1 connected end to end in sequence; the connecting block 1 comprises a clamping portion 2 and a clamping seat portion 3; the clamping portion 2 and the clamping seat portion 3 are respectively provided with a clamping hole 5 and a clamping seat hole 6, and the clamping seat portion 3 is provided with an abutment cavity 4, the clamping portions 2 of two adjacent connecting blocks 1 are correspondingly inserted into the abutment cavity 4 of the clamping seat portion 3, and the clamping holes 5 and the clamping seat holes 6 of two adjacent connecting blocks 1 are connected and fixed by bolts 7;

[0055] The clamping portion 2 is further provided with a limiting portion 8 , and the outer edges of the clamping portions 3 of two adjacent engaging blocks 1 abut against the limiting portion 8 .

[0056] As a specific implementation, the width of the abutting cavity 4 is greater than the thickness of the clamping portion 2 ; the width of the rectangular groove 11 is greater than the thickness of the end edge of the clamping seat portion 3 .

[0057] When the drag chain is being assembled, since the width of the abutment cavity 4 is greater than the thickness of the clamping portion 2, the clamping portion 2 can be better installed in the abutment cavity 4 when the joint block 1 is assembled; since the width of the abutment cavity 4 is greater than the thickness of the end of the clamping portion 2 by 2 mm, it can effectively ensure that the adjacent joint blocks 1 remain stable during the movement of the drag chain, avoid the shaking of the adjacent joint blocks 1 and the vibration of the chain links, and also improve the service life and reliability of the drag chain;

[0058] Similarly, since the width of the rectangular groove 11 is greater than the thickness of the edge of the end of the seat portion 3, the end of the seat portion 3 of the joint block 1 can be better installed into the rectangular groove 11 of another joint block 1 when the joint block 1 is assembled;

[0059] If necessary, the width of the rectangular groove 11 is 2 mm greater than the thickness of the end of the seat portion 3, which can effectively ensure that when the adjacent joining blocks 1 are installed, the end of the seat portion 3 can still relatively easily enter the rectangular groove 11 of another joining block 1, avoiding the adjacent joining blocks 1 from getting stuck or stuck during assembly, thereby enhancing the fault tolerance of the assembly.

[0060] Example 3

[0061] like Figure 1-4 As shown, this embodiment discloses a keel drag chain supporting a cable, comprising at least two connecting blocks 1 connected end to end in sequence; the connecting block 1 comprises a clamping portion 2 and a clamping seat portion 3; the clamping portion 2 and the clamping seat portion 3 are respectively provided with a clamping hole 5 and a clamping seat hole 6, and the clamping seat portion 3 is provided with an abutment cavity 4, the clamping portions 2 of two adjacent connecting blocks 1 are correspondingly inserted into the abutment cavity 4 of the clamping seat portion 3, and the clamping holes 5 and the clamping seat holes 6 of two adjacent connecting blocks 1 are connected and fixed by bolts 7;

[0062] The clamping portion 2 is further provided with a limiting portion 8 , and the outer edges of the clamping portions 3 of two adjacent engaging blocks 1 abut against the limiting portion 8 .

[0063] As a specific implementation, a drag chain consisting of a plurality of end-to-end connected joining blocks 1 has a length of 18000mm-24000mm and an arc radius of 120mm-3000mm.

[0064] When the drag chain is reciprocating, the maximum drag chain length composed of several end-to-end joint blocks 1 is 18000mm, and the minimum running arc radius is 120mm, which can reduce the friction between expansion and contraction during the drag chain movement, thereby improving the movement smoothness and stability of the drag chain. It can greatly reduce the friction and blocking of the machine equipment when the drag chain is reciprocating, and can effectively reduce the time and labor consumption in many production aspects such as downtime for maintenance and frequent replacement.

[0065] How it works

[0066] During assembly, align the clamping portion 2 of the connecting block 1 with the clamping seat portion 3 of another connecting block 1, insert the clamping portion 2 of the connecting block 1 into the abutting cavity 4 of another connecting block 1, and insert the clamping seat portion 3 of the connecting block 1 into the rectangular groove 11 of another connecting block 1. The clamping holes 5 and the clamping seat holes 6 of two adjacent connecting blocks 1 are connected and fixed by bolts 7, and then assembled according to the required installation length, and finally the drag chain splicing is completed.

[0067] When the keel drag chain bends, the abutment cavity 4 of the connecting block 1 can limit the clamping part 2 of the adjacent connecting block 1, and the rectangular groove 11 of the connecting block 1 can limit the outer edge of the socket part 3 of the adjacent connecting block 1, thereby resulting in the drag chain having excellent supporting force, which can effectively increase the rigidity and stability of the drag chain and protect the wires and pipes therein from damage.

[0068] Obviously, the above embodiments of the utility model are only examples for clearly explaining the utility model, and are not intended to limit the implementation methods of the utility model. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made on the basis of the above description. It is not necessary and impossible to list all the implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the utility model should be included in the protection scope of the claims of the utility model.

Claims

1. A keel drag chain for supporting cables, characterized in that: The invention comprises at least two engaging blocks (1) connected end to end in sequence; the engaging block (1) comprises a clamping portion (2) and a clamping seat portion (3); the clamping portion (2) and the clamping seat portion (3) are respectively provided with a clamping hole (5) and a clamping seat hole (6); the clamping seat portion (3) is provided with an abutment cavity (4); the clamping portions (2) of two adjacent engaging blocks (1) are correspondingly inserted into the abutment cavity (4) of the clamping seat portion (3); the clamping holes (5) and the clamping seat holes (6) of two adjacent engaging blocks (1) are connected and fixed by bolts (7); The clamping portion (2) is also provided with a limiting portion (8), and the outer edges of the clamping seat portions (3) of two adjacent joint blocks (1) are in abutment with the limiting portion (8).

2. The keel drag chain for supporting cables according to claim 1, characterized in that: A stepped groove (9) for limiting position is provided in the abutment cavity (4), and the clamping portion (2) abuts against the stepped groove (9).

3. The keel drag chain for supporting cables according to claim 2, characterized in that: The clamping portion (2) is provided with a guide groove (10), and the guide groove (10) is in an inverted trapezoidal structure and is arranged on the upper part of the stepped groove (9).

4. The keel drag chain for supporting cables according to claim 1, characterized in that: The limiting portion (8) is provided with a rectangular groove (11), the outer edge of the clamping seat portion (3) is in the shape of an elongated strip, and the outer edge of the elongated clamping seat portion (3) is arranged in the rectangular groove (11) of the limiting portion (8).

5. The keel drag chain for supporting cables according to claim 1, characterized in that: The abutment cavity (4) is arranged in a rectangular groove-shaped structure, and the abutment cavity (4) is extended from one end of the base portion (3) away from the clamping portion (2) towards a direction close to the clamping portion (2).

6. The keel drag chain for supporting cables according to claim 1, characterized in that: The width of the abutment cavity (4) is greater than the thickness of the clamping portion (2).

7. The keel drag chain for supporting cables according to claim 1, characterized in that: The length of the drag chain formed by the plurality of end-to-end connected joint blocks (1) is 18000mm-24000mm, and the arc radius is 120mm-3000mm.

8. The keel drag chain for supporting cables according to claim 1, characterized in that: A leather cover (12) is provided on the outside of a keel composed of a plurality of joint blocks (1) connected end to end, and the leather cover (12) is an elliptical column structure.

9. The keel drag chain for supporting cables according to claim 4, characterized in that: The width of the rectangular groove (11) is greater than the thickness of the end edge of the socket portion (3).

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