Drag chain link with high overhead performance
By designing multiple limit support structures in the drag chain links, the problem of insufficient overhead performance of the existing drag chain links is solved, and a longer overhead length and higher bearing capacity are achieved.
Patent Information
- Application Number
- CN202422343729.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-25
- Publication Date
- 2025-06-24
- Estimated Expiration
- 2034-09-25
AI Technical Summary
The overhead performance of existing drag chain links is poor, resulting in poor running of drag chains and may lead to structural damage.
A drag chain link with at least three limit support structures is designed, and through the main piece, the crossbar and the articulated structure, the link is kept in an overhead state during rotation.
It effectively enhances the overhead length of the drag chain, prevents the upper drag chain from collapse, and improves the bearing capacity and twist resistance of the overall drag chain.
Smart Images
Figure CN223019301U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of drag chains, and particularly relates to a drag chain link with strong overhead performance. Background Art
[0002] A drag chain, also known as a cable protection drag chain, is a device for binding cables or wires or pneumatic tubes and hydraulic tubes to facilitate their rotation and movement. Drag chains can be divided into heavy-duty drag chains and light-duty drag chains, both of which have been widely used in industries such as numerical control machine tools, electronic equipment, glass machinery, injection molding machine manipulators, handling machinery, plastic machinery, lifting equipment, woodworking machinery, the automotive industry, industrial vehicles, metal processing machines, machine tools, foundry machinery, and port equipment.
[0003] However, in the existing drag chain technology, the overhead performance of the drag chain link is poor. Overhead means that the drag chain runs in the horizontal direction, and the upper part of the drag chain does not contact the lower part during the entire running stroke, and there is a certain gap between the two (see Figure 1 ). Once the overhead performance of the drag chain link is insufficient, it may cause the upper drag chain a to collapse downward and press against the lower drag chain b, resulting in poor drag chain operation. More likely, it may cause structural damage to the drag chain at the bending part, resulting in the product being unable to be used continuously and bringing losses to production.
[0004] Therefore, how to solve the deficiencies of the above existing technologies has become the subject to be studied and solved by the present utility model. Summary of the Invention
[0005] The purpose of the present utility model is to provide a drag chain link with strong overhead performance.
[0006] To achieve the above purpose, the technical solution adopted by the present utility model is:
[0007] A drag chain link with strong overhead performance, the link includes a pair of main plates, and the two main plates are connected by cross bars; adjacent two links are hinged around a rotation center, and there are at least three limit support structures for maintaining the overhead state of the drag chain;
[0008] The two ends of each main plate in the length direction are respectively a first hinge end and a second hinge end; the first hinge end in any one main plate is hinged to the second hinge end of the main plate of the adjacent other link;
[0009] The first hinge end is provided with a first arc groove and a second arc groove, the two arc grooves are symmetrically arranged with the rotation center in the first hinge end as the reference, and the central connection line of the two arc grooves passes through the rotation center; the first arc groove is located at the outer edge of the first hinge end, the second arc groove is arranged adjacent to the middle part of the main plate, and the lengths of the two arc grooves correspond to the rotation stroke of the adjacent two links;
[0010] A first plug-in member is provided in the first arc-shaped groove corresponding to the main plate of the adjacent link in the second hinge end.
[0011] The first hinge end and the second hinge end of the main plate of the adjacent link are connected by a locking structure. The locking structure includes a locking pin and a second plug-in member, which are relatively fixed. The locking pin is inserted into the rotation center for positioning. The second plug-in member is arranged corresponding to the second arc-shaped groove, and the second plug-in member is positioned relative to the second hinge end of the main plate of the adjacent link.
[0012] When the link rotates, the first plug-in member slides in the first arc-shaped groove, and the second plug-in member slides in the second arc-shaped groove. The sliding limit position of the first plug-in member is used as the first limit support structure, and the sliding limit position of the second plug-in member is used as the second limit support structure.
[0013] A limit step is provided on the outer edge of the first hinge end, and a limit abutting portion is provided on the second hinge end of the main plate of the adjacent link corresponding to the limit step. The two are arranged opposite to each other on the rotation path of the link and abut and cooperate at the rotation limit position of the link as the third limit support structure.
[0014] In a further technical solution, the central connection line of the first arc-shaped groove and the second arc-shaped groove intersects with the connection line of the rotation centers of the main plates of the adjacent two links and has an included angle.
[0015] In a further technical solution, the first arc-shaped groove is an open groove, and the first plug-in member is inserted into the first arc-shaped groove along the radial direction for positioning.
[0016] In a further technical solution, the first plug-in member is a boss-like structure arranged along the radial direction in the second hinge end.
[0017] In a further technical solution, the second arc-shaped groove is a closed groove, and the second plug-in member is inserted into the second arc-shaped groove along the axial direction for positioning.
[0018] In a further technical solution, the second plug-in member is a locking pin-like structure, and its axis is parallel to the axis of the locking pin.
[0019] In a further technical solution, a through hole with a diameter corresponding to the diameter of the second plug-in member is provided on the second hinge end. The through hole is arranged opposite to the second arc-shaped groove on the first hinge end of the main plate of the adjacent link in the combined state, and the width of the second arc-shaped groove corresponds to the diameter of the second plug-in member.
[0020] In a further technical solution, the diameter of the locking pin is greater than the diameter of the second plug-in member.
[0021] As for the "first", "second", etc. used in this text, they do not particularly refer to the meaning of order or sequence, nor are they used to limit this case. They are only used to distinguish components or operations described with the same technical terms.
[0022] As for the "connection" or "positioning" used in this text, it can refer to two or more components or devices making direct physical contact with each other, or making indirect physical contact with each other. It can also refer to two or more components or devices operating or acting on each other.
[0023] As for the "including", "comprising", "having", etc. used in this text, they are all open-ended terms, that is, they mean including but not limited to.
[0024] As for the terms used in this text, unless otherwise specified, they generally have their ordinary meanings in this field, in the context of this case, and in the specific context. Some of the terms used to describe this case will be discussed below or elsewhere in this specification to provide additional guidance to those skilled in the art regarding the description of this case.
[0025] As for the "front", "rear", "upper", "lower", "left", "right", etc. used in this text, they are all directional terms. In this case, they are only used to illustrate the positional relationship between various structures, and are not used to limit the protection scheme of this case and the specific direction during actual implementation.
[0026] The working principle and advantages of the present utility model are as follows:
[0027] Through the design of three limit support structures, the present utility model strengthens the rotational support between the chain links from three different points, which can effectively enhance the anti-collapse ability of the upper drag chain, thereby increasing the overhead length of the overall drag chain.
[0028] Compared with the prior art, the structure of the present utility model is compact, can make full use of the limited connection position area, can greatly improve the overhead performance of the drag chain, increase the bearing capacity, and strengthen the anti-twist strength. BRIEF DESCRIPTION OF THE DRAWINGS
[0029] FIG. Figure 1 is a schematic diagram of an existing drag chain;
[0030] FIG. Figure 2 is a schematic structural diagram when the main plates of two adjacent chain links in the embodiment of the present utility model are connected;
[0031] FIG. Figure 3 is Figure 2 an exploded view of;
[0032] FIG. Figure 4 is a schematic structural diagram (perspective view) of the main plate in the embodiment of the present utility model;
[0033] FIG.Figure 5 Schematic diagram when the multi-main plates of the embodiment of the present utility model are connected end to end;
[0034] Appendix Figure 6 Stereoscopic schematic diagram of the drag chain of the embodiment of the present utility model;
[0035] Appendix Figure 7 Side schematic diagram of the drag chain of the embodiment of the present utility model.
[0036] In the above drawings: a. upper drag chain; b. lower drag chain; 0. drag chain; 0a. upper drag chain; 1. main plate; 2. cross bar; 11. first hinge end; 12. second hinge end; 13. rotation center; 14. first arc groove; 15. second arc groove; 16. limit step; 17. limit abutting part; 18. first plug-in part; 19. second plug-in part; 20. locking pin; 21. through hole; A. first limit support structure; B. second limit support structure; C. third limit support structure; L1. center connection line; L2. connection line of rotation centers; L. overhead length. Detailed implementation manners
[0037] The present utility model will be further described below in conjunction with the drawings and embodiments:
[0038] Embodiment: The present case will be clearly described below with diagrams and detailed descriptions. After any person skilled in the art understands the embodiments of the present case, the techniques taught by the present case can be changed and modified without departing from the spirit and scope of the present case.
[0039] The terms used in this article are only for describing specific embodiments and are not intended to limit the present case. Singular forms such as "a", "this", "this", "the present", and "the" also include plural forms as used in this article.
[0040] Refer to the appendix Figures 2 to 7 As shown, a drag chain link with strong overhead performance, the link includes a pair of main plates 1, and the two main plates 1 are connected by a cross bar 2; adjacent two links are hinged around a rotation center 13, and there are at least three limit support structures for keeping the drag chain in an overhead state.
[0041] The two ends of each main plate 1 in the length direction are respectively a first hinge end 11 and a second hinge end 12; the first hinge end 11 in any main plate 1 is inserted and hinged with the second hinge end 12 of the main plate 1 of the adjacent other link.
[0042] The first hinge end 11 is provided with a first arc groove 14 and a second arc groove 15. The two arc grooves are symmetrically arranged with the rotation center 13 in the first hinge end 11 as the reference, and the central connection line L1 of the two arc grooves passes through the rotation center 13. The circular arc centers corresponding to the two arc grooves are both located at the rotation center 13. The first arc groove 14 is located at the outer edge of the first hinge end 11, and the second arc groove 15 is adjacent to the middle of the main piece 1, and the lengths of both correspond to the rotation strokes of two adjacent links.
[0043] A first plug-in member 18 is provided in the second hinge end 12 corresponding to the first arc groove 14 of the main piece 1 of the adjacent link. In the combined state of the drag chain, the first plug-in member 18 is inserted into the first arc groove 14 for positioning.
[0044] The first hinge end 11 and the second hinge end 12 of the main piece 1 of the adjacent link are connected by a locking structure. The locking structure includes a lock pin 20 and a second plug-in member 19, which are relatively fixed. The lock pin 20 is inserted into the rotation center 13 for rotational positioning. The second plug-in member 19 is arranged corresponding to the second arc groove 15, and the second plug-in member 19 is positioned relative to the second hinge end 12 of the main piece 1 of the adjacent link, that is, the second plug-in member 19 and the second hinge end 12 of the main piece 1 of the adjacent link rotate around the rotation center 13 together.
[0045] When the link rotates, the first plug-in member 18 slides in the first arc groove 14, and the second plug-in member 19 slides in the second arc groove 15. The sliding limit position of the first plug-in member 18 is used as the first limit support structure A, and the sliding limit position of the second plug-in member 19 is used as the second limit support structure B.
[0046] A limit step 16 is provided on the outer edge of the first hinge end 11, and a limit abutting portion 17 is provided on the second hinge end 12 of the main piece 1 of the adjacent link corresponding to the limit step 16. The two are oppositely arranged on the rotation path of the link and abut and cooperate at the rotation limit position of the link as the third limit support structure C.
[0047] Preferably, the central connection line L1 of the first arc groove 14 and the second arc groove 15 intersects with the connection line L2 of the rotation centers 13 of two adjacent main pieces 1 of the link and has an included angle.
[0048] Preferably, the first arc groove 14 is an open groove, and the first plug-in member 18 is inserted into the first arc groove 14 for positioning along the radial direction of the first hinge end 11.
[0049] Preferably, the first plug-in member 18 is a boss-like structure arranged along the radial direction in the second hinge end 12.
[0050] Preferably, the second arc-shaped groove 15 is a closed groove, and the second insertion member 19 is axially inserted into the second arc-shaped groove 15 for positioning.
[0051] Preferably, the second insertion member 19 is in the shape of a locking pin, and its axis is parallel to the axis of the locking pin 20. The diameter of the locking pin 20 is larger than the diameter of the second insertion member 19. By thickening the locking pin 20, the tensile force of each main plate link can be enhanced, further ensuring the supporting effect of the overhead length.
[0052] Preferably, a through hole 21 corresponding to the diameter of the second insertion member 19 is provided on the second hinge end 12. The through hole 21 is arranged in alignment with the second arc-shaped groove 15 on the first hinge end 11 of the adjacent link main plate 1 in the combined state, and the width of the second arc-shaped groove 15 corresponds to the diameter of the second insertion member 19.
[0053] The design principle of the present invention will be described as follows:
[0054] When assembling the drag chain, the main plates 1 of two adjacent links are successively hinged. The first hinge end 11 of the main plate of the latter link (hereinafter referred to as the "rear main plate") is inserted into the second hinge end 12 of the main plate of the previous link (hereinafter referred to as the "front main plate"), and the rotation center 13 in the first hinge end 11 of the rear main plate and the rotation center 13 in the second hinge end 12 of the front main plate are coaxially aligned. At the same time, the through hole 21 in the second hinge end 12 of the front main plate is aligned with the second arc-shaped groove 15 in the first hinge end 11 of the rear main plate. Then, the locking pin 20 of the locking structure is inserted into the aligned rotation center 13, and the second insertion member 19 is inserted into the through hole 21 and the second arc-shaped groove 15, so as to lock the hinged state of the front main plate and the rear main plate through the locking structure. At this time, the front main plate and the rear main plate are hinged with the pin shaft 20 as the axis, and the second insertion member 19 moves along an arc track in the second arc-shaped groove 15.
[0055] Meanwhile, the first insertion member 18 in the second hinge end 12 of the front main plate is radially inserted into the first arc-shaped groove 14 in the first hinge end 11 of the rear main plate and slides along an arc track. And when the first insertion member 18 rotates to abut against the end of the first arc-shaped groove 14, the second insertion member 19 also slides to abut against the end of the second arc-shaped groove 15, thereby forming a first limit support structure A and a second limit support structure B. At this time, the limit step 16 on the outer edge of the first hinge end 11 of the rear main plate also abuts against the limit abutting portion 17 on the second hinge end 12 of the front main plate, thereby forming a third limit support structure C.
[0056] Through the design of the three limit support structures, the present invention strengthens the rotational support between the links from three different points, can effectively enhance the anti-collapse ability of the upper drag chain 0a, and thus increase the overhead length L of the overall drag chain 0.
[0057] The above embodiments are only used to illustrate the technical concept and features of the present utility model. The purpose is to enable those skilled in the art to understand the content of the present utility model and implement it accordingly, and it should not be used to limit the protection scope of the present utility model. Any equivalent changes or modifications made according to the spirit of the present utility model should be covered within the protection scope of the present utility model.
Claims
1. A drag chain link with strong overhead performance, the link comprising a pair of main plates (1), the two main plates (1) being connected by a cross bar (2); characterized in that: Two adjacent chain links are hinged around a rotation center (13), and have at least three position-limiting support structures for maintaining the drag chain in an overhead state; The two ends of each main piece (1) in the length direction are respectively a first hinged end (11) and a second hinged end (12); the first hinged end (11) in any main piece (1) is hingedly connected to the second hinged end (12) of another adjacent chain link main piece (1); The first hinged end (11) is provided with a first arc groove (14) and a second arc groove (15), the two arc grooves are symmetrically arranged with the rotation center (13) in the first hinged end (11) as a reference, and the center line of the two arc grooves passes through the rotation center (13); the first arc groove (14) is located at the outer edge of the first hinged end (11), and the second arc groove (15) is arranged adjacent to the middle of the main piece (1), and the lengths of the two arc grooves correspond to the rotation strokes of two adjacent chain links; The first arc-shaped groove (14) corresponding to the adjacent chain link main plate (1) in the second hinged end (12) is provided with a first plug-in component (18); The first hinged end (11) is connected to the second hinged end (12) of the adjacent chain link main plate (1) via a locking structure; the locking structure comprises a locking pin (20) and a second plug-in connector (19), which are relatively fixed; the locking pin (20) is inserted into the rotation center (13) for positioning; the second plug-in connector (19) is arranged corresponding to the second arc-shaped groove (15), and the second plug-in connector (19) is positioned relative to the second hinged end (12) of the adjacent chain link main plate (1); When the chain link rotates, the first connector (18) slides in the first arc-shaped groove (14), and the second connector (19) slides in the second arc-shaped groove (15); the sliding limit position of the first connector (18) serves as the first position-limiting support structure, and the sliding limit position of the second connector (19) serves as the second position-limiting support structure; A limiting step (16) is provided on the outer edge of the first hinged end (11), and a limiting abutment portion (17) is provided on the second hinged end (12) of the adjacent chain link main plate (1) corresponding to the limiting step (16). The two are arranged relative to each other on the rotation path of the chain link and abut against each other at the rotation limit position of the chain link to serve as a third limiting support structure.
2. The drag chain link with strong overhead performance according to claim 1, characterized in that: A line connecting the centers of the first arc-shaped groove (14) and the second arc-shaped groove (15) intersects a line connecting the rotation centers (13) of two adjacent chain link main plates (1) and forms an angle.
3. The drag chain link with strong overhead performance according to claim 1, characterized in that: The first arc-shaped groove (14) is an open groove, and the first connector (18) is inserted into the first arc-shaped groove (14) in a radial direction for positioning.
4. The drag chain link with strong overhead performance according to claim 3 is characterized in that: The first plug-in connector (18) is a boss-shaped structure radially arranged in the second hinged end (12).
5. The drag chain link with strong overhead performance according to claim 1, characterized in that: The second arc-shaped groove (15) is a closed groove, and the second plug-in connector (19) is inserted into the second arc-shaped groove (15) along the axial direction for positioning.
6. The drag chain link with strong overhead performance according to claim 5, characterized in that: The second plug-in connector (19) is a lock pin-shaped structure, and its axis is parallel to the axis of the lock pin (20).
7. The drag chain link with strong overhead performance according to claim 6, characterized in that: The second hinged end (12) is provided with a through hole having a diameter corresponding to the diameter of the second plug-in component (19); the through hole is arranged in alignment with the second arc groove (15) on the first hinged end (11) of the adjacent chain link main plate (1) in the assembled state; the width of the second arc groove (15) corresponds to the diameter of the second plug-in component (19).
8. The drag chain link with strong overhead performance according to claim 6, characterized in that: The diameter of the locking pin (20) is greater than the diameter of the second plug-in connector (19).