CN219549493U - Unit chain link and drag chain - Google Patents

Abstract

The utility model discloses a unit chain link and a drag chain, and belongs to the technical field of cable protection. Aiming at the problem of weaker drag chain protective capability, the utility model provides a unit chain link, which comprises two joint plates and a cover plate, wherein the two joint plates are symmetrically arranged, the cover plate is connected with the two joint plates in a detachable and hinged manner, two ends of the cover plate are respectively provided with a hinge joint, the joint plates are provided with hinge grooves matched with the hinge joint, the hinge grooves are internally provided with clamping arms perpendicular to the length direction of the joint plates, the inner sides of the clamping arms are provided with clamping grooves, and the hinge joints are provided with clamping hook blocks matched with the clamping grooves along the length direction of the cover plate. The two sides of the clamping arm along the thickness direction of the joint plate are planes, no protruding part is needed, and left and right demolding is not needed, so that parting lines are not left on the inner side of the joint plate due to demolding, friction between the parting lines and a protection object is avoided, and the protection performance of the drag chain is ensured.

Description

Unit chain link and drag chain

Technical Field

The utility model relates to the technical field of cable protection, in particular to a unit chain link and a drag chain.

Background

The drag chain, also called wire and cable protection drag chain, is a device which can restrict the cable or wire or air pressure pipe and oil pressure pipe to facilitate the rotation and movement, is often applied to reciprocating movement occasions, and can play the roles of traction and protection for the built-in cable or wire or air pressure pipe and oil pressure pipe. Drag chains have been widely used in the industries of numerically controlled machine tools, electronic equipment, stone machinery, glass machinery, injection molding machines, manipulators, lifting and transporting equipment, automated warehouses, and the like.

The drag chain is shaped like a tank chain and consists of a plurality of unit chain links, and the chain links can freely rotate. The drag chain inner height, inner width, and bend radius R are selected differently. The unit chain link consists of a left joint plate, a right joint plate, an upper cover plate and a lower cover plate. Each section of the drag chain can be opened, the assembly and the disassembly are convenient, the threading is not needed, and the cable, the oil pipe, the air pipe and the like can be put into the drag chain after the cover plate is opened.

At present, most drag chains are made of plastics, cover plates and chain plates are in buckle connection, but the clamping structure is difficult to disassemble, for example, china patent application publication No. CN212744881U discloses a drag chain with a new structure, and main chain plate joints comprise a bottom plate and side plates which are symmetrically arranged on two sides of the bottom plate and are perpendicular to the bottom plate; the separation blade 3 locates the one end that bottom plate 1 was kept away from to two curb plates 2, fixedly connected with fixture block 27 on the inner wall of one side that two curb plates 2 are opposite to, and draw-in groove 31 has been seted up at the both ends of separation blade 3, and fixture block 27 and draw-in groove 31 butt promptly improve the self intensity of main part link joint 100 through separation blade 3, and, separation blade 3 also plays the effect of bearing and supporting the foreign object, and the foreign object can be understood as cable, oil pipe, trachea, water pipe etc.. The scheme has the following defects: the clamping structure occupies the inner space of the drag chain, so that the outer size is larger, and meanwhile, the clamping structure adopts a rigid clamping structure, so that the disassembly is inconvenient.

The novel drag chain comprises a plurality of rotatable chain links which are connected end to end, wherein each chain link comprises two side plates which are symmetrically distributed, two cover plates which are used for connecting the two side plates and are perpendicular to the side plates, the two cover plates are directly opposite to each other and are located between the side plates, the side plates and the cover plates form an annular space, two ends of at least one cover plate in the two cover plates are hinged to the side plates, two ends of each cover plate are provided with hinging heads, hinging shafts which extend outwards are arranged on two sides of each hinging head along the length direction of the drag chain, hinging grooves matched with the hinging heads are formed in the side plates, and hinging clamping grooves matched with the hinging shafts are formed in two sides of each hinging groove along the length direction of the drag chain. The hinge joint is composed of two symmetrically distributed supporting pieces, hinge rotating shafts are arranged on two sides, attached to the side plates, of the supporting pieces, the supporting pieces are located in hinge grooves, buckles are arranged between the supporting pieces, downward-opening hooks are arranged in the hinge grooves, and the buckles are in tight fit with the hooks. The scheme has the following defects: because pothook 12 protrusion curb plate side has taken up tow chain inner space, has had to adopt left and right sides drawing of patterns when processing production, can leave parting line (as shown in the broken line of fig. 1 schematic) in curb plate inboard and downside, and the tow chain can rub with the protection object in the motion process, for example cable, and long-term operation leads to cable damage, loses safeguard function, and the parting line can be bigger and bigger simultaneously along with production time, and mould life reduces greatly, causes manufacturing cost to increase.

Disclosure of Invention

In order to solve the problem of weak protection capability of a related drag chain, the utility model provides a unit chain link and the drag chain. The technical scheme is as follows:

the utility model provides a unit chain link, includes two festival boards that the symmetry set up and connects two the apron of festival board, the both ends of apron respectively with the articulated can be dismantled to the festival board, the both ends of apron are provided with the articulated head respectively, be provided with on the festival board with articulated head matched with hinge groove, be provided with in the hinge groove with the perpendicular joint arm of length direction of festival board, the joint groove has been seted up to the inboard of joint arm, the articulated head is followed the length direction of apron be provided with joint groove matched with trip piece.

In a preferred embodiment of the present utility model, a first inclined surface is disposed on an edge of the clamping arm above the clamping groove, which faces the inner side of the joint plate.

In a preferred embodiment of the present utility model, a second inclined plane matched with the first inclined plane is disposed on an edge of the hook block facing to the lower side of the cover plate.

In a preferred embodiment of the present utility model, two guiding portions extend upward from the top end of the clamping arm, and the distance between the two guiding portions matches with the width of the clamping hook block.

In a preferred embodiment of the utility model, the hinge joint comprises two cantilever arms which are symmetrically arranged, the cantilever arms are positioned at two sides of the end part of the cover plate and extend outwards along the length direction of the cover plate, a rotating shaft is arranged at the outer side of the cantilever arms, the hinge groove is downwards formed along the top end of the joint plate, and U-shaped grooves matched with the rotating shaft are arranged at two sides of the hinge groove.

In a preferred embodiment of the present utility model, a limiting portion extends upward from a groove wall of the hinge groove outside the U-shaped groove.

In a preferred embodiment of the present utility model, the end of the cover plate is provided with a clamping groove, and the clamping groove is opened along the length direction of the cover plate.

In a preferred embodiment of the present utility model, a reinforcing block is disposed in the middle of the clamping groove.

The other technical scheme is as follows:

a drag chain comprising a plurality of unit links as described in any one of the above connected in sequence.

Compared with the prior art, the utility model has the beneficial effects that:

(1) According to the utility model, the clamping arm vertical to the length direction of the joint plate is arranged in the hinge groove of the joint plate, the clamping groove is formed in the inner side of the clamping arm, the clamping hook block is arranged on the hinge head of the cover plate along the length direction of the cover plate and matched with the clamping groove, and the cover plate and the joint plate can be detachably clamped, meanwhile, as the two sides of the clamping arm along the thickness direction of the joint plate are planes, no protruding part is formed, and left and right demolding is not needed, so that parting lines are not left on the inner side of the joint plate due to demolding, friction between the parting lines and a protection object is avoided, and the protection performance of a drag chain is ensured.

(2) According to the utility model, the first inclined surface is arranged on the edge, facing the inner side of the joint plate, of the clamping arm above the clamping groove, so that the clamping hook block can slide along the first inclined surface towards the clamping groove, and clamping is convenient to realize; further through set up in first inclined plane matched with second inclined plane on the edge of trip piece towards the apron below, reduce the wearing and tearing of trip piece and joint arm joint time two to improve joint smoothness.

(3) According to the utility model, the two guide parts extend upwards from the top end of the clamping arm, and the distance between the two guide parts is matched with the width of the clamping hook block, so that when the clamping hook block is clamped with the clamping arm, the clamping hook block is guided to a path clamped with the clamping groove, the left-right offset generated in the rotation process of the clamping hook block is corrected, accurate clamping is realized, and the clamping stability is improved.

(4) According to the utility model, the limiting part extends upwards from the groove wall of the hinge groove at the outer side of the U-shaped groove, so that the size of a notch at the side edge of the joint plate is reduced, the shearing strength of the joint plate is improved, the flow of plastic particles in a die is facilitated, the product yield is improved, the cover plate can lean against the limiting part of another joint plate after being opened and separated from the joint plate, the overlarge rotating angle of the cover plate is avoided, the tilting position of the cover plate after being opened is higher, and the cover plate is convenient to be buckled after a cable is placed.

(5) According to the utility model, the reinforcing block is arranged in the middle of the clamping groove, so that the strength of the cover plate at the clamping groove is improved, the cover plate is prevented from being damaged when a tool is operated, and the service life of the cover plate is prolonged.

Drawings

FIG. 1 is a schematic perspective view of a drag chain of the prior art;

FIG. 2 is a schematic perspective view of the present utility model;

FIG. 3 is a schematic perspective view of the utility model after the panel and the base plate are assembled;

FIG. 4 is a schematic view of a portion of a panel according to the present utility model;

FIG. 5 is a schematic perspective view of a cover plate of the present utility model;

FIG. 6 is a schematic view of the installation of the panel and cover plate of the present utility model;

FIG. 7 (a) is a schematic view showing a first step of disassembling the panel and the cover plate according to the present utility model;

FIG. 7 (b) is a schematic view showing the third step of removing the panel and the cover plate according to the present utility model.

Specifically, 100, a section plate; 110. a hinge groove; 111. a U-shaped groove; 120. a clamping arm; 121. a clamping groove; 122. a first inclined surface; 123. a guide part; 130. a limit part;

200. a bottom plate;

300. a cover plate; 310. a cantilever; 311. a rotating shaft; 320. a hook block; 321. a second inclined surface; 322. a clamping groove; 323. reinforcing blocks.

Detailed Description

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the scope of the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may include one or more of the feature, either explicitly or implicitly. In the description of the utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art in a specific case.

Example 1:

as shown in fig. 2, a unit link includes two symmetrically arranged joint plates 100 and a cover plate 300 connecting the two joint plates 100, generally speaking, the top ends of the two joint plates 100 are connected by the cover plate 300, the bottom ends of the two joint plates 100 are connected by the base plate 200, and two ends of the cover plate 300 are detachably hinged with the joint plates 100 respectively, two ends of the base plate 200 are fixedly connected with the joint plates 100 respectively, and cables and the like are protected in a space formed by the two joint plates 100, the cover plate 300 and the base plate 200.

As shown in fig. 3 to 5, two ends of the cover plate 300 are respectively provided with a hinge joint, and the joint plate 100 is provided with a hinge groove 110 matched with the hinge joint, so that the cover plate 300 and the joint plate 100 can be detachably hinged. Specifically, as shown in fig. 5, the hinge joint includes two cantilever arms 310 symmetrically disposed, the cantilever arms 310 are located at two sides of the end of the cover 300 and extend outwards along the length direction of the cover 300, and a rotating shaft 311 is disposed at the outer side of the cantilever arms 310. As shown in fig. 4, the hinge groove 110 is opened downward along the top end of the hinge plate 100, and both sides of the hinge groove 110 are provided with U-shaped grooves 111 adapted to the rotation shaft 311.

In order to further realize the detachable clamping of the cover plate 300 and the joint plate 100, as shown in fig. 4, a clamping arm 120 perpendicular to the length direction of the joint plate 100 is disposed in the hinge groove 110, and a clamping groove 121 is formed in the inner side of the clamping arm 120, that is, the opening of the clamping groove 121 faces the inner side of the joint plate 100. As shown in fig. 5, the hinge joint is provided with a hook block 320 matching with the clamping groove 121 along the length direction of the cover plate 300, and the detachable clamping of the cover plate 300 and the joint plate 100 is realized by matching the hook block 320 with the clamping groove 121. When the cover plate 300 and the joint plate 100 are detachably clamped, as the two sides of the clamping arms 120 along the thickness direction of the joint plate 100 are planes, no convex parts exist, left and right demolding is not needed, and therefore parting lines are not left on the inner side of the joint plate 100 due to demolding, friction between the parting lines and a protection object is avoided, and the protection performance of a drag chain is ensured.

As shown in fig. 4, a first inclined surface 122 may be disposed on an edge of the clamping arm 120 above the clamping groove 121 toward the inner side of the joint plate 100, so that the hook block 320 may slide along the first inclined surface 122 toward the clamping groove 121, so as to facilitate clamping. As shown in fig. 5, the edge of the hook block 320 facing the lower side of the cover plate 300 may be provided with a second inclined surface 321 matching with the first inclined surface 122, so as to reduce the abrasion of the hook block 320 and the clamping arm 120 when clamping, and improve the smoothness of the clamping. The first inclined surface 122 and the second inclined surface 321 may be circular arc surfaces or flat surfaces, and may be inclined in a specific direction, and are preferably flat surfaces.

Preferably, the top end of the clamping arm 120 extends upwards to form two guide parts 123, the distance between the two guide parts 123 is matched with the width of the clamping hook block 320, so that when the clamping hook block 320 is clamped with the clamping arm 120, the clamping hook block 320 is guided to a path clamped with the clamping groove 121, the left-right offset generated in the rotation process of the clamping hook block 320 is corrected, accurate clamping is realized, and the clamping stability is improved.

The slot wall of the hinge slot 110 outside the U-shaped slot 111 may extend upwards to form a limit portion 130, where the limit portion 130 not only reduces the size of a gap on the side edge of the hinge plate 100, thereby improving the shearing strength of the hinge plate 100, but also is beneficial to the flow of plastic particles in the mold, improving the product yield, and making the cover plate 300 open and separate from the hinge plate 100, and then lean against the limit portion 130 of another hinge plate 100, so as to avoid the overlarge rotation angle of the cover plate 300, make the tilting position of the cover plate 300 after opening higher, and facilitate the placement of the cable to lock the cover plate 300.

In order to facilitate opening the cover plate 300 and placing cables, i.e. disassembling the cover plate 300, the end of the cover plate 300 is provided with a clamping groove 322, the clamping groove 322 is opened along the length direction of the cover plate 300, a tool, such as a straight screwdriver, can be inserted into the clamping groove 322 and pressed backwards and downwards, so that the clamping arm 120 on the joint plate 100 is pressed backwards, the cover plate 300 is matched to be tilted upwards, and finally the clamping hook block 320 is separated from the clamping groove 121. Preferably, the middle of the clamping groove 322 is provided with a reinforcing block 323, so that the strength of the cover plate 300 at the clamping groove 322 is improved, the cover plate 300 is prevented from being damaged when a tool, such as a straight screwdriver, is operated, and the service life of the cover plate 300 is prolonged.

As shown in fig. 6, the steps of installing the cover plate 300 and the joint plate 100 are as follows:

1) A rotating shaft 311 at one end of the cover plate 300 is arranged in a U-shaped groove 111 corresponding to the joint plate 100;

2) The cover plate 300 rotates around the U-shaped groove 111;

3) With the rotation, the clamping hook block 320 at the end of the cover plate 300 presses the clamping arm 120 corresponding to the joint plate 100;

4) With further rotation, the hook block 320 at the other end of the cover plate 300 presses the clamping arm 120 at the other end of the joint plate 100, and meanwhile, the rotating shaft 311 at the other end of the cover plate 300 is screwed into the corresponding U-shaped groove 111 of the joint plate 100;

5) As the rotating shaft 311 of the cover plate 300 is completely screwed into the U-shaped groove 111 of the joint plate 100, the hook block 320 of the cover plate 300 is clamped into the clamping groove 121 of the clamping arm 120, and the clamping arm 120 is restored. The latch block 320 of the cover plate 300 and the latch groove 121 of the latch arm 120 of the joint plate 100 play a role in latching.

As shown in fig. 7 (a) and 7 (b), the cover plate 300 and the joint plate 100 are detached as follows:

1) A straight screwdriver is inserted into the clamping groove 322 of the cover plate 300, and the straight screwdriver presses the clamping arm 120 of the joint plate 100 downwards;

2) The clamping arm 120 is stressed to incline backwards, and the clamping groove 121 and the clamping hook block 320 are separated;

3) Meanwhile, the end part of the straight screwdriver winds the clamping arm 120 to serve as a fulcrum to apply upward force to the clamping groove 322 of the cover plate 300, and the rotating shaft 311 at the end of the cover plate 300 is separated from the U-shaped groove 111 corresponding to the joint plate 100;

4) The cover plate 300 rotates around the U-shaped groove 111 at the other end of the joint plate 100 until the cantilever 310 of the cover plate 300 abuts against the limiting part 130 of the joint plate 100;

5) After the cable is placed, the assembly cover plate 300 is clamped and buckled in place.

Example 2:

on the basis of embodiment 1, this embodiment discloses a drag chain, which includes a plurality of unit links in embodiment 1 that are connected in sequence, and the front and rear corresponding link plates 100 can be adopted to sequentially clamp and rotationally connect.

In summary, according to the utility model, the clamping arm perpendicular to the length direction of the joint plate is arranged in the hinge groove of the joint plate, the clamping groove is formed in the inner side of the clamping arm, the clamping hook block is arranged on the hinge head of the cover plate along the length direction of the cover plate and matched with the clamping groove, and when the cover plate and the joint plate are detachably clamped, as the two sides of the clamping arm along the thickness direction of the joint plate are planes, no protruding part is needed, left and right demolding is not needed, so that parting lines are not left on the inner side of the joint plate due to demolding, friction between the parting lines and a protection object is avoided, and the protection performance of the drag chain is ensured.

Furthermore, it should be understood that the described embodiments are merely some, but not all, embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Claims (9)

1. The utility model provides a unit chain link, includes two festival boards that the symmetry set up and connects two the apron of festival board, the both ends of apron respectively with the articulated can be dismantled to the festival board, the both ends of apron are provided with the articulated head respectively, be provided with on the festival board with articulated head matched with hinge groove, its characterized in that, be provided with in the hinge groove with the perpendicular joint arm of length direction of festival board, the joint groove has been seted up to the inboard of joint arm, the articulated head is followed the length direction of apron be provided with joint groove matched with trip piece.

2. The unit link according to claim 1, characterized in that the edge of the clamping arm above the clamping groove facing the inside of the segment plate is provided with a first bevel.

3. The unit link according to claim 2, characterized in that the edge of the trip block facing downwards the cover plate is provided with a second bevel cooperating with the first bevel.

4. The unit link according to claim 1, wherein the top end of the clamping arm extends upwards to form two guide parts, and the distance between the two guide parts is matched with the width of the clamping hook block.

5. The unit chain link according to claim 1, wherein the hinge joint comprises two cantilever arms symmetrically arranged, the cantilever arms are located at two sides of the end part of the cover plate and extend outwards along the length direction of the cover plate, a rotating shaft is arranged at the outer side of the cantilever arms, the hinge groove is formed downwards along the top end of the joint plate, and U-shaped grooves matched with the rotating shaft are formed at two sides of the hinge groove.

6. The unit link according to claim 5, characterized in that the groove wall of the hinge groove outside the U-shaped groove extends upward with a limit portion.

7. The unit link according to claim 1, characterized in that the end of the cover plate is provided with a clamping groove, which is open in the length direction of the cover plate.

8. The unit link according to claim 7, characterized in that a reinforcing block is provided in the middle of the clamping groove.

9. A drag chain comprising a plurality of unit links as claimed in any one of claims 1 to 8 connected in sequence.