Drag chain for protecting cable and assembly equipment

Abstract

The utility model relates to the technical field of drag chains, and discloses a drag chain for protecting a cable. The clamp comprises a clamp head, a limiting sleeve and a keel chain frame. The keel chain frame is sleeved with the limiting sleeve, the clamp head is arranged at the end of the limiting sleeve and used for fixedly connecting the keel chain frame to the limiting sleeve, the rotating angle of adjacent chain links is limited through rotation limiting of the first limiting column and the first limiting groove, and the rotating angle of the adjacent chain links is limited through rotation limiting of the second limiting column and the second limiting groove of the chain links. The fracture risk possibly caused by local stress concentration at the joint of the chain links is reduced; the utility model further discloses assembly equipment of the drag chain for protecting the cable, the assembly equipment comprises a manual crank, a transmission rod, a stamping head and a strong spring, downward thrust is provided for the stamping head by driving the manual stamping structure, the connecting bolt is assembled between the adjacent chain links in a stamping mode, the adjacent chain links form a hinged structure, and the drag chain for protecting the cable is assembled. And repeated assembly tasks can be executed more accurately.

Description

Technical Field

[0001] The utility model relates to the technical field of drag chains, and in particular to a drag chain and assembly equipment for protecting cables. Background Art

[0002] Drag chains, also known as cable and wire 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. Drag chains have been widely used in CNC machine tools, electronic equipment, glass machinery, injection molding machine manipulators, handling machinery, plastic machinery, lifting equipment, woodworking machinery, automotive industry, industrial vehicles, metal processing machines, machine tools, casting machinery, port equipment, flat panel display equipment, semiconductor equipment and other industries. The main function of the drag chain is to ensure that these pipelines are not damaged by the external environment during the operation of the equipment, while maintaining orderly arrangement and movement; cable drag chains are widely used in CNC machine tools, automated production lines, lifting equipment, robots and other mechanical equipment.

[0003] Since the drag chain is set on the outside of the cable to protect the reciprocating cable, 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. It can bear the weight of the cables and other components while maintaining the shape and stability of the drag chain.

[0004] Drag chains in the prior art are mainly divided into two categories: steel-aluminum drag chains and plastic drag chains. Plastic drag chains include nylon drag chains, engineering plastic drag chains, etc. Plastic drag chains are light in texture, good in wear resistance, flexible in movement, and relatively low in cost. They are suitable for protecting cables, oil pipes and other hoses from external wear and stress; however, plastic drag chains are easily damaged in high temperature, high strength and high wear environments, and their service life is relatively short. Steel-aluminum drag chains are also called steel-aluminum drag chains. This type of drag chain is made of a combination of steel and aluminum materials. It has a high load-bearing capacity and tensile strength and is suitable for use under heavy loads and harsh environments. However, it is heavy and costly, and may produce loud noises when moving at high speeds.

[0005] Since the existing plastic drag chains have a weak carrying capacity, when the drag chains support the reciprocating motion of the cables, the cables are often too heavy, causing the keel connection of the drag chains to be damaged, thereby reducing work efficiency.

[0006] In response to the problem of weak load-bearing capacity of existing keel drag chains, the industry has conducted relevant research and designs, such as the keel drag chain (CN214578614U), which includes at least two connecting blocks connected in sequence, and by arranging abutment blocks on both sides of the plug-in part, so that the plug-in part abuts against the inner wall of the sleeve part to provide supporting force, while the abutment block part abuts against the outer edge of the sleeve part to synchronously provide supporting force.

[0007] However, the two adjacent connecting blocks of the above-mentioned drag chain have only the plug-in part as the mating limit point. When the drag chain is subjected to heavy loads during bending or linear motion, a single limit point will be subjected to greater stress concentration, which may cause local wear of the limit point between the two adjacent connecting blocks, thereby easily leading to fatigue damage of the drag chain and potential risk of breakage. Utility Model Content

[0008] In order to solve the above-mentioned prior art problems, the utility model provides a drag chain and assembly equipment for protecting cables;

[0009] Another object of the utility model is to provide an assembly device for a drag chain for protecting cables.

[0010] In order to solve the above technical problems, the technical solution of the utility model is as follows:

[0011] A drag chain for protecting cables, comprising: a clamp head, a limiting sleeve, and a keel chain frame; the inner sleeve of the keel chain frame is arranged inside the limiting sleeve, and is used to support the limiting sleeve; the clamp head is arranged at the end of the limiting sleeve, and is used to fix the keel chain frame to the limiting sleeve;

[0012] The keel chain frame is composed of a plurality of chain links hinged to each other end to end, and the chain link includes a hinge portion and a hinge seat portion; a first hinge hole is provided on the outer side of the hinge portion, and a second hinge hole is provided on the outer side of the hinge seat portion, and the first hinge hole and the second hinge hole of adjacent chain links are hinged and fixed by connecting bolts;

[0013] The hinged portion of the chain link is provided with a first limiting groove, the hinge seat portion of the chain link is provided with a first limiting column, and the first limiting column of the chain link is arranged in the first limiting groove of the adjacent chain link; the hinge seat portion of the chain link is provided with a second limiting groove, the hinged portion of the chain link is provided with a second limiting column, and the second limiting column of the chain link is arranged in the second limiting groove of the adjacent chain link.

[0014] Preferably, the adjacent chain links are rotatable around the connecting bolts.

[0015] Preferably, the hinge seat portion of the chain link is wider than the hinge portion, and the hinge portion of the chain link is snap-fitted into the inner side of the hinge seat portion of the adjacent keel chain link.

[0016] Furthermore, the first limiting groove is arranged around the first hinge hole, the first limiting column is arranged around the second hinge hole, the space of the first limiting groove is larger than the width of the first limiting column, and the first limiting column limits the angle of adjacent links through the first limiting groove.

[0017] Furthermore, the second limiting column is arranged around the first hinge hole, the second limiting groove is arranged around the second hinge hole, the space of the second limiting groove is larger than the width of the second hinge hole, and the second limiting column also limits the angle of adjacent links through the second limiting groove.

[0018] Furthermore, the clamp heads are symmetrically arranged, and clamp connection holes are provided on the clamp heads, and bolts are passed through the clamp connection holes to close the adjacent clamp heads.

[0019] Preferably, the folded and closed clamp head fixedly connects the keel chain frame to the clamp head.

[0020] Furthermore, a head chain lock is provided at the head end of the keel chain frame, and the head chain lock is provided with a head slot hole. The clamp head is detachably arranged on the outer surface of the head chain lock and is connected to the head chain lock by passing a bolt through the head slot hole.

[0021] Furthermore, the first chain lock is also provided with a first connecting column, and the first connecting column of the first chain lock is detachably connected to the first hinge hole of the chain link.

[0022] Furthermore, a tail chain lock is provided at the tail end of the keel chain frame, the tail chain lock is provided with a tail slot hole, the clamp head is detachably arranged on the outer surface of the tail chain lock, and is connected to the tail chain lock by passing a bolt through the tail slot hole.

[0023] Furthermore, the tail chain lock is also provided with a tail connecting groove, and the tail connecting groove of the tail chain lock is detachably connected to the second hinge hole of the chain link through a connecting bolt.

[0024] An assembly device for protecting a cable drag chain comprises: a manual punching structure, an assembly table, a positioning seat and a die seat; the manual punching structure is arranged above the assembly table; the positioning seat is arranged below the assembly table and corresponds to the manual punching structure in a vertical direction; the die seat is movably connected to the assembly table.

[0025] Preferably, the manual punching structure is disposed above the assembly table and is used for punching and assembling the connecting bolts between adjacent chain links.

[0026] Preferably, the die base is movably connected to the assembly table, and is used to cooperate with the manual stamping structure to stamp and assemble the connecting bolts between adjacent chain links.

[0027] Furthermore, the manual stamping structure includes: a manual crank, a transmission rod, a stamping head and a strong spring; the manual crank is movably connected to the assembly table; the manual crank is connected to the stamping head through the transmission rod, and is used to drive the stamping head to move downward; the strong spring is arranged between the transmission rod and the assembly table, and is used to drive the stamping head to move upward.

[0028] Preferably, a punching cylinder is provided on the assembly table, and the transmission rod is movably arranged in the punching cylinder through a strong spring.

[0029] Preferably, the mold base is a folding structure, and the mold base can be folded open or closed to allow the punching of the connecting bolt to contact the base.

[0030] Compared with the prior art, the beneficial effects of the technical solution of the utility model are:

[0031] ① Setting multiple "matching limit points" in the connection between the chain links can effectively improve the stability of the keel chain frame;

[0032] The adjacent chain links limit the rotation angles by the rotation limit of the first limit column and the first limit groove, and the rotation limit of the second limit column and the second limit groove of the chain link limits the rotation angle, which can improve the stability of the entire keel chain frame, avoid uncontrollable deformation under force or dynamic load, and reduce the risk of fracture caused by local stress concentration at the chain link connection.

[0033] ② Set up semi-automatic equipment for assembling chain links to ensure that the production efficiency of the drag chain is significantly improved;

[0034] By driving the manual punching structure to provide downward thrust for the punching head, the connecting bolts are punched and assembled between adjacent chain links, so that the adjacent chain links form a hinged structure. This can perform repetitive assembly tasks more accurately, reduce errors caused by human factors, and ensure the assembly quality and dimensional consistency of each chain link.

[0035] ③ The clamp heads are separately clamped and fixed to the keel frame and dust cover to improve the stability of the entire cable movement;

[0036] The keel chain frame is arranged inside the limit sleeve, and the cable surface is also provided with a limit sleeve. Specifically, each cable and the keel chain frame surface are provided with an independent limit sleeve. Multiple cables are connected in a row, and keel chain frames are provided on both sides of the multiple rows of cables. The clamp head firmly fits the outer surfaces of the keel chain frame and both ends of the multiple cables to prevent the keel chain frame from deforming when the cable moves; a soft leather contact surface is also provided on the clamp head, and the soft leather contact surface of the clamp head is fitted with the outer surface of the limit sleeve, which can improve the stability of the drag chain while avoiding bending damage to the dust cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 is a first structural schematic diagram of a chain link;

[0038] Figure 2 is a second structural schematic diagram of the chain link;

[0039] Figure 3 is a top view of the chain link;

[0040] Figure 4 is a schematic diagram of the connection of adjacent chain links;

[0041] Figure 5 The schematic diagram of the structure of the first chain lock;

[0042] Figure 6 It is a schematic diagram of the structure of the tail chain lock;

[0043] Figure 7 This is a schematic diagram of the overall assembly of a cable drag chain for protection;

[0044] Figure 8 is a schematic structural diagram of the second clamp head;

[0045] Fig. 9 is a schematic diagram of the structure of the second clamp head for assembling adjacent chain links;

[0046] Fig.10 This is a schematic diagram of the structure of Example 3.

[0047] Among them, 1. clamp head; 2. limit sleeve; 3. chain link; 301. first hinge hole; 302. second hinge hole; 303. first limit slot; 304. first limit column; 305. second limit slot; 306. second limit column; 4. connecting bolt; 5. head chain lock; 501. head slot hole; 502. head connecting column; 6. tail chain lock; 601. tail slot hole; 602. tail connecting slot; 7. manual stamping structure; 701. manual crank; 702. transmission rod; 703. stamping head; 704. strong spring; 8. assembly table; 9. positioning seat; 10. mold base; 11. cable. DETAILED DESCRIPTION

[0048] 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.

[0049] 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.

[0050] Example 1

[0051] like Figure 1-7 As shown, this embodiment discloses a drag chain for protecting cables, comprising: a clamp head 1, a limiting sleeve 2, and a keel chain frame; the inner sleeve of the keel chain frame is arranged inside the limiting sleeve 2, and is used to support the limiting sleeve 2; the clamp head 1 is arranged at the end of the limiting sleeve 2, and is used to fix the keel chain frame to the limiting sleeve 2;

[0052] The keel chain frame is composed of a plurality of chain links 3 which are hinged to each other end to end, and the chain link 3 includes a hinge portion and a hinge seat portion; a first hinge hole 301 is provided on the outer side of the hinge portion, and a second hinge hole 302 is provided on the outer side of the hinge seat portion, and the first hinge hole 301 and the second hinge hole 302 of adjacent chain links 3 are hinged and fixed by a connecting bolt 4;

[0053] The hinged portion of the link 3 is provided with a first limiting groove 303, the hinged seat portion of the link 3 is provided with a first limiting column 304, and the first limiting column 304 of the link 3 is arranged in the first limiting groove 303 of the adjacent link 3; the hinged seat portion of the link 3 is provided with a second limiting groove 305, the hinged portion of the link 3 is provided with a second limiting column 306, and the second limiting column 306 of the link 3 is arranged in the second limiting groove 305 of the adjacent link 3.

[0054] When the automated production line equipment is working to bend the connecting cable, the hinged portion of the link 3 is embedded in the hinged seat of the adjacent link 3 through the connecting bolt 4, so that the adjacent links 3 can rotate relative to each other, and the limiting cooperation between the limiting column of the link 3 and the limiting groove of the adjacent link 3 can limit the bending angle of the keel chain frame, thereby allowing the cable attached to the limiting sleeve 2 to be bent at a certain angle.

[0055] As a specific implementation, the first limiting groove 303 is arranged around the first hinge hole 301, the first limiting column 304 is arranged around the second hinge hole 302, the space of the first limiting groove 303 is larger than the width of the first limiting column 304, and the first limiting column 304 limits the angle of the adjacent chain link 3 through the first limiting groove 303;

[0056] The second limiting column 306 is arranged around the first hinge hole 301 , and the second limiting groove 305 is arranged around the second hinge hole 302 . The space of the second limiting groove 305 is larger than the width of the second hinge hole 302 . The second limiting column 306 also limits the angle of adjacent links 3 through the second limiting groove 305 .

[0057] Specifically, a first limiting groove 303 and a second limiting column 306 are provided on the hinge part of the link 3, and a first limiting column 304 and a second limiting groove 305 are provided on the hinge seat part, and then the connecting bolt 4 hinges the first hinge hole 301 and the second hinge hole 302 of the adjacent links 3; when working, the adjacent links 3 are limited in their rotation angle by the active limiting of the first limiting column 304 and the first limiting groove 303, and the active limiting of the second limiting column 306 and the second limiting groove 305 of the link 3 is used to limit the rotation angle, which can improve the stability of the entire keel chain frame, avoid uncontrollable deformation under force or dynamic load, and reduce the risk of fracture caused by local stress concentration at the connection of the link 3.

[0058] When assembling a cable drag chain with a keel chain frame, align the first hinge hole 301 of the link 3 with the second hinge hole 302 of the other link 3, then embed the connecting bolt 4 into the first hinge hole 301 and the second hinge hole 302 to form a hinge, and then assemble the keel chain frame according to the required installation length, and finally connect the head chain lock 5 and the tail chain lock 6 at the head and tail ends of the keel chain frame respectively, fix the keel chain frame and the cable in the limiting sleeve 2, and connect and fix the two ends of the two by the clamp head 1.

[0059] A plurality of keel chain frames are connected into a row through the clamp head 1, and the rows of keel frames and cables are fixed in the limiting sleeve 2 through the clamp head 1, so that the drag chain is spliced.

[0060] As a specific implementation, a head chain lock 5 is provided at the head end of the keel chain frame, and the head chain lock 5 is provided with a head slot hole 501. The clamp head 1 is detachably arranged on the outer surface of the head chain lock 5, and is connected to the head chain lock 5 by passing a bolt through the head slot hole 501; the head chain lock 5 is also provided with a head connecting column 502, and the head connecting column 502 of the head chain lock 5 is detachably connected to the first hinge hole 301 of the chain link 3;

[0061] A tail chain lock 6 is provided at the tail end of the keel chain frame, and the tail chain lock 6 is provided with a tail slot hole 601. The clamp head 1 is detachably arranged on the outer surface of the tail chain lock 6 and is connected to the tail chain lock 6 by passing a bolt through the tail slot hole 601; the tail chain lock 6 is also provided with a tail connecting groove 602, and the tail connecting groove 602 of the tail chain lock 6 is detachably connected to the second hinge hole 302 of the chain link 3 through a connecting bolt 4.

[0062] Specifically, the design of the head connecting column 502 of the head chain lock 5 can ensure that the head chain lock 5 is accurately connected to the first hinge hole 301 of the keel chain frame, and the chain link 3 and the tail chain lock 6 are riveted through the connecting bolt 4. This design is convenient for adjustment during assembly. If the chain link 3 needs to be repaired, the staff can disassemble the chain link 3 and then quickly connect the head chain lock 5 and the tail chain lock 6 without making major changes to the entire structure, which can effectively reduce assembly time and increase efficiency.

[0063] Specifically, a head slot hole 501 and a tail slot hole 601 are respectively provided on the head chain lock 5 and the tail chain lock 6, which are bolted to the head slot hole 501 and the tail slot hole 601 through the clamp head 1, and an independent limiting sleeve is provided on the surface of each cable 11 and the keel chain frame, so that multiple cables 11 are connected in a row, and keel chain frames are provided on both sides of the multiple rows of cables 11. The clamp head 1 firmly fits the outer surfaces of the keel chain frame and both ends of the multiple cables 11 to ensure that the keel chain frames in a row are synchronously and tightly combined with the limiting sleeve 2, so that the keel chain frames in a row can move synchronously with the cables 11 in the dynamic movement of the drag chain, which can improve the stability of the drag chain in dynamic movement, reduce the shaking and unnecessary friction of the cables 11 in the limiting sleeve 2, thereby reducing the wear between the chain links 3, thereby increasing the structural strength and stability of the drag chain, and when subjected to a larger bending radius or load, it can also effectively prevent the keel chain frame from deformation and breakage, thereby ensuring the reliable operation of the drag chain.

[0064] As a specific implementation manner, the clamp heads 1 are symmetrically arranged, and clamp connection holes are provided on the clamp heads 1. Bolts pass through the clamp connection holes to close the adjacent clamp heads 1.

[0065] Specifically, the closed clamp head 1 fits firmly to the outer surfaces of both ends of the keel chain frame and the multiple cables 11 to prevent the keel chain frame from deforming when the cables 11 move; a soft leather contact surface is also provided on the clamp head 1, and the soft leather contact surface of the clamp head 1 fits to the outer surface of the limit sleeve, which can improve the stability of the drag chain while avoiding bending damage to the limit sleeve 2.

[0066] Example 2

[0067] like Figure 1-9As shown, this embodiment discloses an assembly device for protecting a cable drag chain, comprising: a manual punching structure 7, an assembly table 8, a positioning seat 9 and a die seat 10; the manual punching structure 7 is arranged above the assembly table 8; the positioning seat 9 is arranged below the assembly table 8 and corresponds to the manual punching structure 7 in a vertical direction; the die seat 10 is movably connected to the assembly table 8;

[0068] The manual stamping structure 7 includes: a manual crank 701, a transmission rod 702, a stamping head 703 and a strong spring 704; the manual crank 701 is movably connected to the assembly table 8; the manual crank 701 is connected to the stamping head 703 through the transmission rod 702, and is used to drive the stamping head 703 to move downward; the strong spring 704 is arranged between the transmission rod 702 and the assembly table 8, and is used to drive the stamping head 703 to move upward.

[0069] Specifically, the manual crank 701 includes a handle and a crank and a handle, the crank is movably connected to the top of the assembly table 8, the handle is movably connected to the crank and the transmission rod 702, the bottom of the transmission rod 702 is connected to the punch head 703, the assembly table 8 is provided with a punch cylinder, and the strong spring 704 is arranged between the transmission rod 702 and the assembly table 8;

[0070] During assembly, align the first hinge hole 301 and the second hinge hole 302 of the adjacent chain links 3, and pass the connecting bolt 4 through the first hinge hole 301 and the second hinge hole 302, and then vertically place the connecting bolt 4 on the positioning seat 9. The worker pulls down the handle to make the transmission rod 702 drive the punch head 703 to punch downward, and the strong spring 704 abutting the inside of the punch cylinder is compressed and stored, and the connecting bolt 4 is punched and riveted, so that the hinge part of the chain link 3 is embedded between the adjacent chain links 3 through the connecting bolt 4;

[0071] After the assembly is completed, the strong spring 704 abutting the inside of the punching cylinder of the assembly table 8 is retracted and restored, driving the transmission rod 702 to drive the punching head 703 to move upward, and then the keel chain frame is assembled according to the required installation length. Finally, the tail end of the keel chain frame is embedded in the tail connecting groove 602 of the tail chain lock 6 through the punching connecting bolt 4. The semi-automatic assembly equipment can achieve faster operation speed and higher assembly accuracy, reduce the time delay and error of manual operation, thereby improving the overall production rhythm, and can also improve production efficiency and reduce scrap rate, further saving costs.

[0072] Example 3

[0073] like Figure 1-10 As shown, this embodiment discloses an assembly device for protecting a cable drag chain, comprising: a manual punching structure 7, an assembly table 8, a positioning seat 9 and a die seat 10; the manual punching structure 7 is arranged above the assembly table 8; the positioning seat 9 is arranged below the assembly table 8 and corresponds to the manual punching structure 7 in a vertical direction; the die seat 10 is movably connected to the assembly table 8;

[0074] The manual stamping structure 7 includes: a manual crank 701, a transmission rod 702, a stamping head 703 and a strong spring 704; the manual crank 701 is movably connected to the assembly table 8; the manual crank 701 is connected to the stamping head 703 through the transmission rod 702, and is used to drive the stamping head 703 to move downward; the strong spring 704 is arranged between the transmission rod 702 and the assembly table 8, and is used to drive the stamping head 703 to move upward.

[0075] As a specific implementation method, the die base 10 is stretched out and passed through between adjacent links 3, and is located at the bottom of the first hinge hole 301 and the second hinge hole 302 on one side of the adjacent link 3, and the connecting bolt 4 of the short side is placed in the first hinge hole 301 and the second hinge hole 302 of the adjacent link 3, and then the handle is pulled down, so that the transmission rod 702 drives the punch head 703 to punch downward, and the connecting bolt 4 is punched and riveted, so that the hinge part of the link 3 is embedded between the adjacent links 3 through the connecting bolt 4, and finally the other side of the adjacent link 3 is turned over and embedded in the connecting bolt 4 of the short side, and then the keel chain frame is assembled according to the required installation length;

[0076] The design of symmetrically setting the connecting bolt 4 is simple and quick, ensuring that the entire chain is more evenly stressed, reducing local stress concentration, and improving the overall stability and durability of the structure. When the connecting bolt 4 on one side of the link 3 is excessively worn or fails prematurely, it can be replaced manually, which can effectively facilitate subsequent inspection and maintenance, avoid the removal and replacement of all the connecting bolts 4 on the link 3, thereby saving maintenance time and improving the overall stability and durability of the keel chain frame structure.

[0077] How it works

[0078] During assembly, align the first hinge hole 301 and the second hinge hole 302 of the adjacent chain links 3, and pass the connecting bolt 4 through the first hinge hole 301 and the second hinge hole 302, and then vertically place the connecting bolt 4 on the positioning seat 9. The worker pulls down the handle to make the transmission rod 702 drive the punch head 703 to punch downward, and the strong spring 704 abutting the inside of the punch cylinder is compressed and stored, and the connecting bolt 4 is punched and riveted, so that the hinge part of the chain link 3 is embedded between the adjacent chain links 3 through the connecting bolt 4;

[0079] After the assembly is completed, the strong spring 704 abutting against the inside of the punching cylinder of the assembly table 8 is retracted and restored, driving the transmission rod 702 to drive the punching head 703 to move upward, and then the keel chain frame is assembled according to the required installation length, and finally the tail end of the keel chain frame is embedded in the tail connecting groove 602 of the tail chain lock 6 through the punching connecting bolt 4, and then the multiple keel chain frames are connected into a row through the clamp head 1, and the rows of keel frames and cables are fixed in the limit sleeve 2 through the second clamp head 2, and the drag chain is spliced; the semi-automatic assembly equipment can achieve faster operation speed and higher assembly accuracy, reduce the time delay and error of manual operation, and thus improve the overall production rhythm.

[0080] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A drag chain for protecting cables, characterized in that: include: A clamp head (1), a limiting sleeve (2), and a keel chain frame; the keel chain frame is sleeved inside the limiting sleeve (2) and is used to support the limiting sleeve (2); the clamp head (1) is arranged at the end of the limiting sleeve (2) and is used to fix the keel chain frame to the limiting sleeve (2); The keel chain frame is composed of a plurality of chain links (3) which are hinged to each other end to end, and the chain link (3) comprises a hinge portion and a hinge seat portion; a first hinge hole (301) is provided on the outer side of the hinge portion, and a second hinge hole (302) is provided on the outer side of the hinge seat portion, and the first hinge hole (301) and the second hinge hole (302) of adjacent chain links (3) are hingedly fixed by a connecting bolt (4); The hinged portion of the chain link (3) is provided with a first limiting groove (303), the hinged seat portion of the chain link (3) is provided with a first limiting column (304), and the first limiting column (304) of the chain link (3) is arranged in the first limiting groove (303) of the adjacent chain link (3); the hinged seat portion of the chain link (3) is provided with a second limiting groove (305), the hinged portion of the chain link (3) is provided with a second limiting column (306), and the second limiting column (306) of the chain link (3) is arranged in the second limiting groove (305) of the adjacent chain link (3).

2. The drag chain for protecting cables according to claim 1, characterized in that: The first limiting groove (303) is arranged around the first hinge hole (301), the first limiting column (304) is arranged around the second hinge hole (302), the space of the first limiting groove (303) is larger than the width of the first limiting column (304), and the first limiting column (304) limits the angle of adjacent chain links (3) through the first limiting groove (303).

3. The drag chain for protecting cables according to claim 1, characterized in that: The second limiting column (306) is arranged around the first hinge hole (301), the second limiting groove (305) is arranged around the second hinge hole (302), the space of the second limiting groove (305) is larger than the width of the second hinge hole (302), and the second limiting column (306) also limits the angle of adjacent chain links (3) through the second limiting groove (305).

4. The drag chain for protecting cables according to claim 1, characterized in that: The clamp heads (1) are symmetrically arranged, and clamp connection holes are provided on the clamp heads (1). Bolts pass through the clamp connection holes to close adjacent clamp heads (1).

5. The drag chain for protecting cables according to claim 1, characterized in that: A head chain lock (5) is provided at the head end of the keel chain frame, and the head chain lock (5) is provided with a head slot hole (501). The clamp head (1) is detachably arranged on the outer surface of the head chain lock (5) and is connected to the head chain lock (5) by means of bolts passing through the head slot hole (501).

6. The drag chain for protecting cables according to claim 5, characterized in that: The first chain lock (5) is also provided with a first connecting column (502), and the first connecting column (502) of the first chain lock (5) is detachably connected to the first hinge hole (301) of the chain link (3).

7. The drag chain for protecting cables according to claim 1, characterized in that: The tail end of the keel chain frame is provided with a tail chain lock (6), and the tail chain lock (6) is provided with a tail slot hole (601). The clamp head (1) is detachably arranged on the outer surface of the tail chain lock (6) and is connected to the tail chain lock (6) by passing a bolt through the tail slot hole (601).

8. The drag chain for protecting cables according to claim 7, characterized in that: The tail chain lock (6) is also provided with a tail connection groove (602), and the tail connection groove (602) of the tail chain lock (6) is detachably connected to the second hinge hole (302) of the chain link (3) through a connecting bolt (4).

9. An assembly device using the drag chain according to any one of claims 1 to 8, characterized in that: include: A manual punching structure (7), an assembly table (8), a positioning seat (9) and a die seat (10); the manual punching structure (7) is arranged above the assembly table (8); the positioning seat (9) is arranged below the assembly table (8) and corresponds to the manual punching structure (7) in a vertical direction; the die seat (10) is movably connected to the assembly table (8).

10. The assembly equipment of the drag chain according to claim 9, characterized in that: The manual punching structure (7) comprises: a manual crank (701), a transmission rod (702), a punching head (703) and a strong spring (704); the manual crank (701) is movably connected to the assembly table (8); the manual crank (701) is connected to the punching head (703) via the transmission rod (702) and is used to drive the punching head (703) to move downward; the strong spring (704) is arranged between the transmission rod (702) and the assembly table (8) and is used to drive the punching head (703) to move upward.

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