Keel drag chain with high-strength bearing function

Abstract

The utility model relates to the technical field of dust-free drag chains, and discloses a keel drag chain with a high-strength bearing function. A first clamp head, a second clamp head, a dustproof sleeve and a keel frame; the keel frame is composed of a plurality of keel chain links which are hinged end to end, abutting blocks and hinged columns are arranged on the hinged portions of the keel chain links, a plurality of groove columns are symmetrically arranged on the peripheries of the hinged columns of the keel chain links, abutting grooves and containing holes are formed in the hinged support portions of the keel chain links, and half-moon grooves are symmetrically formed in the peripheries of the containing holes of the keel chain links. The bending angle of the drag chain is limited through a plurality of rotating abutting points between the hinged portions and the hinged support portions of the adjacent keel chain links, so that the load of the drag chain is effectively increased, the first clamp head and the second clamp head are distributed to be independently clamped and fixed to the keel frame and the dustproof sleeve, the stability of the whole drag chain is improved, and the practicability of the drag chain is improved. Therefore, the overall load capacity of the keel frame is enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of dust-free drag chains, in particular to a keel drag chain with a high-strength load-bearing function. Background Art

[0002] Drag chains, also known as "tank chains" or "engineering plastic tank chains", are devices used to protect and guide cables, wires, gas pipes and liquid pipes, and are widely used in modern industry. 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] The existing keel drag chains are mainly divided into two categories: plastic keel drag chains and metal keel drag chains. Plastic keel drag chains have the advantages of light weight, corrosion resistance, and relatively low price, and are suitable for light mechanical equipment. However, plastic keel drag chains are easily damaged in high temperature, high strength and high wear environments, and their service life is relatively short. Metal keel drag chains are widely used in heavy mechanical equipment and harsh working environments due to their high strength and wear resistance, but they are heavy, costly, and may produce loud noises when moving at high speeds.

[0005] Since the existing keel drag chain has a weak carrying capacity, when the drag chain supports the reciprocating motion of the cable, the cable is often too heavy, causing the keel connection of the drag chain 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 a drag chain (CN206246603U), in which a limit block protruding from the rotating shaft is provided in the first groove, and a limit groove is provided at the rear end of the side plate for the limit block of another connecting unit to move back and forth within a fixed range. The limit groove is connected to the shaft hole, and two adjacent connecting units can be connected positively or reversely. The load-bearing capacity of the drag chain is increased through the abutment between the limit block and the limit groove.

[0007] However, the two adjacent connecting units of the above-mentioned drag chain have only one abutment point on one side. When the drag chain is subjected to heavy loads during bending or linear motion, the single abutment point will be subjected to greater stress concentration, which may cause local wear of the two adjacent connecting units, thereby easily leading to fatigue damage and potential breakage risk of the drag chain. Utility Model Content

[0008] The utility model is to overcome the technical problems existing in the prior art and is a keel drag chain with high-strength load-bearing function.

[0009] In order to solve the above technical problems, the technical solution of the utility model is as follows:

[0010] A keel drag chain with high-strength load-bearing function, comprising: a first clamp head, a second clamp head, a dust cover, and a keel frame; the keel frame is at least one row of dust covers; the first clamp head is detachably arranged on the outer surface of the rows of keel frames, and is used to fix the rows of keel frames; the second clamp head is detachably arranged on the outer surface of the dust cover, and is used to stably cover the dust cover on the outer side of the keel frame;

[0011] The keel frame is composed of a plurality of keel links hinged to each other end to end, and the keel links include a hinge portion and a hinge seat portion; an abutment block is provided on the inner side of the hinge portion of the keel link, an abutment groove is provided on the inner side of the hinge seat portion of the keel link for hinged cooperation with adjacent keel links, an articulation column is provided on the outer side of the hinge portion of the keel link, and a receiving hole is provided on the outer side of the hinge seat portion of the keel link for hinged cooperation with adjacent keel links;

[0012] The outside of the hinge column is symmetrically provided with groove columns, and the outside of the accommodating hole is symmetrically provided with a semi-moon groove matched with the groove columns, and the center of the semi-moon groove is consistent with the center of the accommodating hole.

[0013] Preferably, the hinge seat portion of the keel link is wider than the hinge portion, and the hinge portion of the keel link is snap-fitted into the inner side of the hinge seat portion of the adjacent keel link.

[0014] Preferably, a plurality of slot columns of the keel chain link are slidably matched with the semi-lunar grooves of adjacent keel chain links, and the bending angles between adjacent keel chain links can be limited by the "contact points" between the plurality of slot columns and the semi-lunar grooves.

[0015] Furthermore, the inner space of the abutment groove of the keel link is larger than the abutment block, and the raised abutment block of the keel link is arranged in the abutment groove of the adjacent keel link.

[0016] Preferably, the raised abutment block of the keel link is in the shape of a triangular protrusion, the inner space of the abutment groove is trapezoidal, and the triangular raised abutment block of the keel link can be movably arranged in the abutment groove of the adjacent keel link.

[0017] Furthermore, a plurality of cables are stacked inside the dust cover, and at least two rows of the keel frame are spaced apart between the cable stacks.

[0018] Furthermore, a head chain lock is provided at the head end of the keel frame, and the head chain lock is provided with a head positioning hole, and the hinge column and the slot column of the keel chain link can be cooperatively connected to the head positioning hole of the head chain lock.

[0019] Furthermore, the first chain lock is provided with a plurality of first fixing holes, and the first clamp head is detachably arranged on the outer surface of the first chain lock of a row of keel frames, and is connected to the first chain lock by passing bolts through the first fixing holes.

[0020] Furthermore, a tail chain lock is provided at the tail end of the keel frame, and the tail chain lock is provided with a plurality of tail positioning holes, and the abutment grooves and the accommodating holes of the keel chain links can be matched and connected to the tail positioning holes of the tail chain lock.

[0021] Furthermore, the tail chain lock is provided with a plurality of tail fixing holes, and the first clamp head can be detachably arranged on the outer surface of the tail chain lock of the row of dragon frames, and connected to the tail chain lock by bolts passing through the tail fixing holes.

[0022] Furthermore, a slot is provided on the hinge seat portion of the keel chain link, and the slot is provided in a long strip structure.

[0023] Furthermore, the second clamp head comprises a fixing plate and a connecting base, a side wall of the connecting base is provided with a sliding groove along its width, and the fixing plate is slidably engaged with the connecting base along the sliding groove.

[0024] Furthermore, threaded locking holes are provided on the tops of the fixing plate and the connecting base, and the threaded locking holes of the fixing plate and the connecting base are threadedly connected by bolts.

[0025] Preferably, the edges of the hinge column and the slot column are chamfered.

[0026] Compared with the prior art, the beneficial effects of the technical solution of the utility model are:

[0027] ① Multiple slot columns are symmetrically arranged around the hinge column of the keel chain link to limit the bending angle between adjacent keel chain links;

[0028] By slidingly matching several slot columns of the keel chain links with the half-moon grooves of adjacent keel chain links, and by using "multiple abutment points" between the multiple slot columns and the half-moon grooves, the adjacent keel chain links can be limited to bend freely within a certain range, thereby avoiding uncontrollable deformation under force or dynamic load.

[0029] ② Setting multiple "rotational abutment points" in the connection between the keel chain links can effectively improve the stability of the drag chain;

[0030] The adjacent keel chain links limit the rotation angle of each other through the snap-fitting of the raised abutment blocks and the abutment grooves. The hinged cooperation of the hinged columns and slot columns of the keel chain links with the accommodating holes and half-moon grooves of the adjacent keel chain links can limit the rotation angle of the keel frame, thereby improving the stability of the entire keel frame, avoiding uncontrollable deformation under force or dynamic loads, and reducing the risk of fracture caused by local stress concentration.

[0031] ③ The clamp heads are distributed separately and clamped and fixed to the keel frame and dust cover to improve the stability of the entire drag chain;

[0032] The first clamp head can firmly fit the outer surface of the keel frame, and is used to fix the rows of keel frames to prevent the keel frames from moving or deforming; a gentle contact surface is provided on the second clamp head, and the gentle contact surface of the second clamp head is arranged to fit the outer surface of the dust cover, and is used to stably connect the dust cover to the outside of the keel frame, thereby improving the stability of the drag chain and avoiding bending damage to the dust cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a structural schematic diagram of the keel chain link;

[0034] Figure 2 It is a top view of the keel chain link;

[0035] Figure 3 The schematic diagram of the structure of the first chain lock;

[0036] Figure 4 It is a schematic diagram of the structure of the tail chain lock;

[0037] Figure 5 It is a schematic diagram of the structure of the connection between the head chain lock and the keel chain link;

[0038] Figure 6 It is a schematic diagram of the structure of the connection between the tail chain lock and the keel chain link;

[0039] Figure 7 The figure is a schematic diagram of the overall assembly structure of the cable;

[0040] Figure 8 It is a schematic diagram of the structure of the second clamp head.

[0041] Among them, 1. the first clamp head; 2. the second clamp head; 201. the fixing plate; 202. the connecting base; 3. the dust cover; 4. the keel chain link; 401. the abutment block; 402. the abutment groove; 403. the hinge column; 404. the accommodation hole; 405. the groove column; 406. the half-moon groove; 5. the head chain lock; 501. the head positioning hole; 502. the head fixing hole; 6. the tail chain lock; 601. the tail positioning hole; 602. the tail fixing hole; 7. the slot; 8. the fastener. DETAILED DESCRIPTION

[0042] 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.

[0043] 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.

[0044] Example 1

[0045] like Figure 1-8 As shown, this embodiment discloses a keel drag chain with high-strength load-bearing function, comprising a first clamp head 1, a second clamp head 2, a dust cover 3, and a keel frame; the keel frame is at least one row of dust covers 3; the first clamp head 1 is detachably arranged on the outer surface of the rows of keel frames, and is used to fix the rows of keel frames; the second clamp head 2 is detachably arranged on the outer surface of the dust cover 3, and is used to stably cover the dust cover 3 on the outer side of the keel frame;

[0046] The keel frame is composed of a plurality of keel links 4 which are hinged to each other end to end, and the keel link 4 includes a hinge portion and a hinge seat portion; an abutment block 401 is provided on the inner side of the hinge portion of the keel link 4, an abutment groove 402 which is hingedly matched with the adjacent keel link 4 is provided on the inner side of the hinge seat portion of the keel link 4, a hinge column 403 is provided on the outer side of the hinge portion of the keel link 4, and a receiving hole 404 which is hingedly matched with the adjacent keel link 4 is provided on the outer side of the hinge seat portion of the keel link 4;

[0047] A groove column 405 is symmetrically arranged on the outside of the hinge column 403 , and a semi-moon groove 406 cooperating with the groove column 405 is symmetrically arranged on the outside of the receiving hole 404 . The center of the semi-moon groove 406 is consistent with the center of the receiving hole 404 .

[0048] Since the automated production line equipment needs to bend the connecting cables during operation, the hinged portion of the keel link 4 is snapped into place with the inner side of the hinge seat of the adjacent keel link 4, and the abutment block 401 and the slot column 405 of the keel link 4 can limit the bending angle of the keel frame, thereby allowing the cable attached to the dust cover 3 to be bent at a certain angle.

[0049] Specifically, a plurality of grooved columns 405 are symmetrically arranged around the hinged column 403 of the keel link 4. By slidingly fitting a plurality of grooved columns 405 of the keel link 4 with the semi-lunar groove 406 of the adjacent keel link 4, and by limiting the free bending of adjacent keel links 4 within a certain range through "multiple abutment points" between the plurality of grooved columns 405 and the semi-lunar groove 406, the maximum bending angle between adjacent keel links 4 can be effectively controlled, thereby preventing structural damage caused by excessive bending of the keel frame, effectively increasing the load of the drag chain, and avoiding uncontrollable deformation of the drag chain under dynamic heavy loads.

[0050] When assembling the keel frame, align the abutment block 401 of the keel link 4 and embed it into the abutment groove 402 of another keel link 4, align the hinge column 403 and the groove column 405 of the keel link 4 and embed them into the receiving hole 404 and the half-moon groove 406 of another keel link 4, and then assemble the keel frame according to the required installation length. Finally, connect the head chain lock 5 and the tail chain lock 6 to the head and tail of the keel frame respectively, and connect the keel frames into a row through the first clamp head 1, and fix the rows of keel frames and cables in the dust cover 3 through the second clamp head 2 to complete the splicing of the drag chain.

[0051] As a specific implementation, the internal space of the abutment groove 402 of the keel link 4 is larger than the abutment block 401 , and the raised abutment block 401 of the keel link 4 is arranged in the abutment groove 402 of the adjacent keel link 4 .

[0052] Specifically, the abutment block 401 of the keel link 4 is in the shape of a triangular protrusion, and the internal space of the abutment groove 402 is trapezoidal. The triangular protrusion abutment block 401 of the keel link 4 can be movably arranged in the abutment groove 402 of the adjacent keel link 4; the internal space of the trapezoidal abutment groove 402 can provide a rotation space for the triangular protrusion abutment block 401 of the adjacent keel link 4. When the keel frame bends, the weight of the cable it carries can also be dispersed to the edge of the trapezoidal groove of the adjacent keel link 4 through the triangular protrusion abutment block 401, which can effectively reduce the local stress concentration between the keel links 4 and enhance the overall stability of the keel frame.

[0053] Specifically, adjacent keel links 4 limit the rotation angle by snapping into fit between the raised abutment block 401 and the abutment groove 402. The hinged fit between the hinged column 403 and the groove column 405 of the keel link 4 and the receiving hole 404 and the half-moon groove 406 of the adjacent keel link 4 can limit the rotation angle of the keel frame, thereby improving the stability of the entire keel frame, avoiding uncontrollable deformation under force or dynamic load, and reducing the risk of fracture caused by local stress concentration.

[0054] As a specific embodiment, the second clamp head 2 includes a fixed plate 201 and a connecting base 202. The side wall of the connecting base 202 is provided with a sliding groove along its width, and the fixed plate 201 slides and fits with the connecting base 202 correspondingly along the sliding groove; threaded locking holes are provided on the top of the fixed plate 201 and the connecting base 202, and the threaded locking holes of the fixed plate 201 and the connecting base 202 are threadedly connected by bolts.

[0055] Specifically, sliding the fixing plate 201 along the sliding groove to correspond to the connecting base 202 can increase the flexibility of the assembly of the second clamp head 2, simplify the installation process, and allow for quick assembly without complicated alignment steps, while also providing long-lasting stability; threaded connection through bolts ensures that even under vibration or external force, the fixing plate 201 and the connecting base 202 can remain tightly connected, effectively preventing loosening and falling off.

[0056] Specifically, the first clamp head 1 can firmly fit the outer surface of the keel frame, and is used to fix the rows of keel frames to prevent the keel frames from moving or deforming; a gentle contact surface is provided on the second clamp head 2, and the gentle contact surface of the second clamp head 2 is arranged to fit the outer surface of the dust cover 3, and is used to stably connect the dust cover 3 to the outside of the keel frame, thereby improving the stability of the drag chain while avoiding bending damage to the dust cover 3.

[0057] Preferably, chamfers are provided on the edges of the hinge column 403 and the slot column 405, and the hinge column 403 and the slot column 405 of the keel link 4 are inserted into the accommodating hole 404 and the half-moon groove 406 along the edges of the hinge seat of the adjacent keel link 4, and then assembled according to the required installation length, and finally the drag chain is spliced.

[0058] Example 2

[0059] like Figure 1-8 As shown, this embodiment discloses a keel drag chain with high-strength load-bearing function, comprising a first clamp head 1, a second clamp head 2, a dust cover 3, and a keel frame; the keel frame is at least one row of dust covers 3; the first clamp head 1 is detachably arranged on the outer surface of the rows of keel frames, and is used to fix the rows of keel frames; the second clamp head 2 is detachably arranged on the outer surface of the dust cover 3, and is used to stably cover the dust cover 3 on the outer side of the keel frame;

[0060] The keel frame is composed of a plurality of keel links 4 which are hinged to each other end to end, and the keel link 4 includes a hinge portion and a hinge seat portion; an abutment block 401 is provided on the inner side of the hinge portion of the keel link 4, an abutment groove 402 which is hingedly matched with the adjacent keel link 4 is provided on the inner side of the hinge seat portion of the keel link 4, a hinge column 403 is provided on the outer side of the hinge portion of the keel link 4, and a receiving hole 404 which is hingedly matched with the adjacent keel link 4 is provided on the outer side of the hinge seat portion of the keel link 4;

[0061] A groove column 405 is symmetrically arranged on the outside of the hinge column 403 , and a semi-moon groove 406 cooperating with the groove column 405 is symmetrically arranged on the outside of the receiving hole 404 . The center of the semi-moon groove 406 is consistent with the center of the receiving hole 404 .

[0062] As the drag chain moves along with the moving parts of the automated production line equipment, it may be subjected to a torsional force, which may cause the keel frame to easily detach from the dust cover 3.

[0063] As a specific implementation, a head chain lock 5 is provided at the head end of the keel frame, and the head chain lock 5 is provided with a head positioning hole 501, and the hinge column 403 and the slot column 405 of the keel link 4 can be matched and connected to the head positioning hole 501 of the head chain lock 5; the head chain lock 5 is provided with a plurality of head fixing holes 502, and the first clamp head 1 is detachably arranged on the outer surface of the head chain lock 5 of the row of keel frames, and is connected to the head chain lock 5 by passing a bolt through the head fixing hole 502;

[0064] A tail chain lock 6 is provided at the tail end of the keel frame, and the tail chain lock 6 is provided with a plurality of tail positioning holes 601. The abutment groove 402 and the accommodating hole 404 of the keel chain link 4 can be matched and connected to the tail positioning hole 601 of the tail chain lock 6; the tail chain lock 6 is provided with a plurality of tail fixing holes 602, and the first clamp head 1 can also be detachably arranged on the outer surface of the tail chain lock 6 of the row of keel frames, and connected to the tail chain lock 6 by bolts passing through the tail fixing holes 602.

[0065] Specifically, the design of the head positioning hole 501 of the head chain lock 5 can ensure that the keel chain link 4 is accurately docked and locked through the hinge column 403 and the groove column 405, and the keel chain link 4 and the tail chain lock 6 are riveted by the fastener 8. This design is convenient for adjustment during assembly. If the keel chain link 4 needs to be repaired, the staff can disassemble the keel chain link 4 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.

[0066] Specifically, a head fixing hole 502 and a tail fixing hole 602 are respectively provided on the head chain lock 5 and the tail chain lock 6, and the first clamp head 1 is connected to the head fixing hole 502 and the tail fixing hole 602 through bolts. The keel frames are fixed in rows through the first clamp head 1 to ensure that the keel frames in a row are synchronously and tightly combined with the dust cover 3, which can ensure that the keel frames in a row can be synchronized with the dust cover 3 during dynamic movement of the drag chain, improve the stability of the drag chain during dynamic movement, reduce the shaking and unnecessary friction of the cable in the dust cover 3, thereby reducing wear, and ensure the orderly and stable operation of the cable in the drag chain, thereby increasing the structural strength and stability of the drag chain, especially when subjected to a large bending radius or load, it can also effectively prevent the keel frame from deformation and breakage, thereby ensuring the reliable operation of the drag chain.

[0067] Example 3

[0068] like Figure 1-8 As shown, this embodiment discloses a keel drag chain with high-strength load-bearing function, comprising a first clamp head 1, a second clamp head 2, a dust cover 3, and a keel frame; the keel frame is at least one row of dust covers 3; the first clamp head 1 is detachably arranged on the outer surface of the rows of keel frames, and is used to fix the rows of keel frames; the second clamp head 2 is detachably arranged on the outer surface of the dust cover 3, and is used to stably cover the dust cover 3 on the outer side of the keel frame;

[0069] The keel frame is composed of a plurality of keel links 4 which are hinged to each other end to end, and the keel link 4 includes a hinge portion and a hinge seat portion; an abutment block 401 is provided on the inner side of the hinge portion of the keel link 4, an abutment groove 402 which is hingedly matched with the adjacent keel link 4 is provided on the inner side of the hinge seat portion of the keel link 4, a hinge column 403 is provided on the outer side of the hinge portion of the keel link 4, and a receiving hole 404 which is hingedly matched with the adjacent keel link 4 is provided on the outer side of the hinge seat portion of the keel link 4;

[0070] A groove column 405 is symmetrically arranged on the outside of the hinge column 403 , and a semi-moon groove 406 cooperating with the groove column 405 is symmetrically arranged on the outside of the receiving hole 404 . The center of the semi-moon groove 406 is consistent with the center of the receiving hole 404 .

[0071] As a specific implementation, a slot 7 is provided on the hinge seat of the keel link 4, and the slot 7 is provided in a long strip structure.

[0072] Specifically, when several keel links 4 connected end to end are disassembled, since the hinge seat of the keel link 4 is provided with a long strip-shaped slot 7, force can be applied to the two side walls of the hinge seat so that the two side walls of the hinge seat are expanded outward, which can effectively increase the snap-in fitting space of the hinge column 403 and the slot column 405, so that the hinge column 403 and the slot column 405 of the keel link 4 can be better snapped into the receiving hole 404 and the semi-lunar groove 406 from the adjacent keel link 4, and the hinge column 403 and the slot column 405 of the keel link 4 can be better removed from the receiving hole 404 and the semi-lunar groove 406 of the adjacent keel link 4; therefore, the slot 7 can make it easier to quickly replace the adjacent keel links 4, thereby improving the efficiency of the device.

[0073] As a specific implementation, a plurality of cables are stacked inside the dust cover 3, and at least two rows of keel frames are spaced apart between the cable stacks.

[0074] Specifically, several rows of cables are stacked inside the dust cover 3, and rows of keel frames are stacked between the rows of cables. A stable frame structure is formed by the stacked and spaced drag chain, which effectively enhances the high load capacity of the entire drag chain and can effectively resist external vibration and impact.

[0075] How it works

[0076] A plurality of slotted columns 405 are symmetrically arranged around the hinged column 403 of the keel link 4. By slidingly fitting a plurality of slotted columns 405 of the keel link 4 with the half-moon groove 406 of the adjacent keel link 4, and by limiting the free bending of adjacent keel links 4 within a certain range through "multiple abutment points" between the plurality of slotted columns 405 and the half-moon groove 406, the maximum bending angle between adjacent keel links 4 can be effectively controlled, thereby preventing structural damage caused by excessive bending of the keel frame, effectively increasing the load of the drag chain, and avoiding uncontrollable deformation of the drag chain under dynamic heavy loads.

[0077] When assembling the keel frame, align the abutment block 401 of the keel link 4 and embed it into the abutment groove 402 of another keel link 4, align the hinge column 403 and the groove column 405 of the keel link 4 and embed them into the receiving hole 404 and the half-moon groove 406 of another keel link 4, and then assemble the keel frame according to the required installation length. Finally, connect the head chain lock 5 and the tail chain lock 6 to the head and tail of the keel frame respectively, and connect the keel frames into a row through the first clamp head 1, and fix the rows of keel frames and cables in the dust cover 3 through the second clamp head 2 to complete the splicing of the drag chain.

[0078] 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 keel drag chain with high strength load-bearing function, characterized in that: The clamp comprises a first clamp head (1), a second clamp head (2), a dust cover (3), and a keel frame; the keel frame is at least one row of keel frames sleeved inside the dust cover (3); the first clamp head (1) is detachably arranged on the outer surface of the row of keel frames, and is used to fix the row of keel frames; the second clamp head (2) is detachably arranged on the outer surface of the dust cover (3), and is used to stably sleeve the dust cover (3) on the outer side of the keel frame; The keel frame is composed of a plurality of keel links (4) hinged to each other end to end, and the keel link (4) includes a hinge portion and a hinge seat portion; an abutment block (401) is provided on the inner side of the hinge portion of the keel link (4); an abutment groove (402) is provided on the inner side of the hinge seat portion of the keel link (4) for hinged cooperation with adjacent keel links (4); a hinge column (403) is provided on the outer side of the hinge portion of the keel link (4); and a receiving hole (404) is provided on the outer side of the hinge seat portion of the keel link (4) for hinged cooperation with adjacent keel links (4); The hinge column (403) is symmetrically provided with a groove column (405) on the outside, and the receiving hole (404) is symmetrically provided with a half-moon groove (406) matching with the groove column (405) on the outside, and the center of the half-moon groove (406) is consistent with the center of the receiving hole (404).

2. The keel drag chain with high-strength load-bearing function according to claim 1, characterized in that: The internal space of the abutment groove (402) of the keel chain link (4) is larger than the abutment block (401), and the raised abutment block (401) of the keel chain link (4) is arranged in the abutment groove (402) of the adjacent keel chain link (4).

3. The keel drag chain with high-strength load-bearing function according to claim 1, characterized in that: A plurality of cables are stacked inside the dust cover (3), and at least two rows of keel frames are spaced apart between the cable stacks.

4. The keel drag chain with high-strength load-bearing function according to claim 1, characterized in that: The head end of the keel frame is provided with a head chain lock (5), and the head chain lock (5) is provided with a head positioning hole (501). The hinge column (403) and the groove column (405) of the keel chain link (4) can be matched and connected to the head positioning hole (501) of the head chain lock (5).

5. The keel drag chain with high-strength load-bearing function according to claim 4, characterized in that: The first chain lock (5) is provided with a plurality of first fixing holes (502); the first clamp head (1) is detachably arranged on the outer surface of the first chain lock (5) of the row of keel frames, and is connected to the first chain lock (5) by means of bolts passing through the first fixing holes (502).

6. The keel drag chain with high-strength load-bearing function according to claim 1, characterized in that: The tail end of the keel frame is provided with a tail chain lock (6), and the tail chain lock (6) is provided with a plurality of tail positioning holes (601). The abutment groove (402) and the receiving hole (404) of the keel chain link (4) can be matched and connected to the tail positioning hole (601) of the tail chain lock (6).

7. The keel drag chain with high-strength load-bearing function according to claim 6, characterized in that: The tail chain lock (6) is provided with a plurality of tail fixing holes (602), and the first clamp head (1) can also be detachably arranged on the outer surface of the tail chain lock (6) of the row of dragon frames, and connected to the tail chain lock (6) by bolts passing through the tail fixing holes (602).

8. The keel drag chain with high-strength load-bearing function according to claim 1, characterized in that: A slot (7) is provided on the hinge seat portion of the keel chain link (4), and the slot (7) is provided in a long strip-shaped structure.

9. The keel drag chain with high-strength load-bearing function according to claim 1, characterized in that: The second clamp head (2) comprises a fixing plate (201) and a connecting base (202); a sliding groove is provided on the side wall of the connecting base (202) along its width; and the fixing plate (201) is slidably engaged with the connecting base (202) along the sliding groove.

10. The keel drag chain with high-strength load-bearing function according to claim 9, characterized in that: The fixing plate (201) and the connecting base (202) are provided with threaded locking holes at the top, and the threaded locking holes of the fixing plate (201) and the connecting base (202) are threadedly connected by bolts.

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