CN217355407U - Drag chain with chain link cover plate - Google Patents

Abstract

The utility model relates to a drag chain with a chain link cover plate, which comprises a plurality of chain links connected with each other through hinges, wherein each chain link comprises two clamping plates which are arranged in a mirror surface mode, the clamping plates are provided with lap joints, and the adjacent clamping plates are mutually hinged through the lap joints and can rotate on the same plane; the drag chain also comprises chain link cover plates which are connected with the opposite clamping plates and are respectively arranged at the upper end and the lower end of the clamping plates; the adjacent chain link cover plates are jointed end to end so as to close the drag chain. The end faces of the upper opening and the lower opening of the drag chain are provided with the drag chain cover plates which are jointed end to end, so that the drag chain is sealed, chips and sundries can be prevented from entering the drag chain, and the normal use of the drag chain is ensured.

Description

Drag chain with chain link cover plate

Technical Field

The application relates to the field of drag chains, in particular to a drag chain with a chain link cover plate.

Background

At present, drag chains are widely applied to the fields of numerical control machines, stone machinery, glass machinery, door and window machinery, injection molding machines, mechanical arms, hoisting and transporting equipment, automatic warehouses and the like, can play a role in traction and protection of cables, oil pipes, air pipes, water pipes and the like arranged in the machinery, and meanwhile, the whole machinery looks more beautiful.

The drag chain in the prior art is mainly composed of a plurality of chain links which can be connected together in a relatively rotating manner, and cables, oil pipes, air pipes, water pipes and the like are placed inside the drag chain in a penetrating manner. In actual use, the drag chain is not closed, and dust, debris and sundries easily enter the drag chain, so that the drag chain cannot normally operate.

Therefore, a fully enclosed drag chain capable of preventing sundries from entering is needed.

SUMMERY OF THE UTILITY MODEL

The object of the utility model is to overcome the shortcomings in the prior art and to provide a closed drag chain provided with a chain link cover plate.

In order to achieve the above object, the present invention has the following constitution:

the drag chain comprises a plurality of chain links which are hinged with each other, wherein each chain link comprises two clamping plates which are arranged in a mirror surface mode, overlapping parts are arranged on the clamping plates, and the adjacent clamping plates are hinged with each other through the overlapping parts and can rotate on the same plane;

the drag chain also comprises chain link cover plates which are connected with the opposite clamping plates and are respectively arranged at the upper end and the lower end of the clamping plates; the adjacent chain link cover plates are jointed end to end so as to close the drag chain.

In a preferred drag chain with a chain link cover plate, the chain link cover plate comprises a cover plate main body and a combining part, and one end of the combining part can be embedded below one end of the adjacent cover plate main body.

In a preferred drag chain provided with a link cover, the joint in the link cover is provided with a slope from the joint end of the cover body towards the lower side of the adjacent one end of the cover body.

In the preferable drag chain with the chain link cover plate, a cover plate groove is formed in the inner side face of the chain link cover plate and used for installing a vertical partition plate, and the vertical partition plate is used for partitioning the space inside the drag chain.

In a preferred drag chain with the chain link cover plates, the cover plate grooves are arranged along the length direction of the drag chain cover plates, and the vertical partition plates are arranged between the vertically opposite chain link cover plates.

In a preferred drag chain with a chain link cover, the chain link cover is connected with the clamping plate by a snap.

In the preferable drag chain with the chain link cover plate, the upper end and the lower end of the clamping plate are provided with female buttons which are perpendicular to the clamping plate and extend into the drag chain, and the two ends of the chain link cover plate are provided with male buttons which correspond to the female buttons.

In a preferred drag chain provided with a link cover plate, the link cover plate is in the shape of a flat rectangular parallelepiped.

The drag chain with the chain link cover plate comprises a plurality of chain links which are hinged with each other, wherein each chain link comprises two clamping plates which are arranged in a mirror surface mode, the clamping plates are provided with lap joint parts, and the adjacent clamping plates are hinged with each other through the lap joint parts and can rotate on the same plane; the drag chain also comprises chain link cover plates which are connected with the opposite clamping plates and are respectively arranged at the upper end and the lower end of the clamping plates; the adjacent chain link cover plates are jointed end to end so as to close the drag chain. The end faces of the upper opening and the lower opening of the drag chain are provided with the drag chain cover plates which are jointed end to end, so that the drag chain is sealed, chips and sundries can be prevented from entering the drag chain, and the normal use of the drag chain is ensured.

Drawings

FIG. 1 is a schematic diagram of a preferred construction of a tow chain of the present application;

FIG. 2a is a schematic front view of a preferred link plate of the present application;

FIG. 2b is a schematic rear view of a preferred link plate of the present application;

FIG. 2c is a schematic top view of a preferred link plate of the present application;

FIG. 2d is a schematic view of a first preferred perspective view of the link plate of the present application;

FIG. 2e is a second preferred perspective view of the link plate of the present application;

FIG. 3a is a schematic front view of a preferred link cover plate of the present application;

FIG. 3b is a schematic rear view of a preferred link cover plate of the present application;

FIG. 4a is a schematic front view of a preferred vertical spacer of the present application;

FIG. 4b is a side view schematic of a preferred vertical spacer of the present application;

FIG. 4c is a schematic structural view of a preferred drag chain with attached vertical spacers of the present application;

description of the symbols:

a drag chain 1;

a chain link 2;

a clamping plate 3; a first lap portion 3100; a first lap portion inner side plate 3110; the first boss 3111; a first lap portion outer panel 3120; the first groove portion 3121; a first rubber strip 3122; a second overlap portion 3200; a second lap portion inner side plate 3210; a second projection 3211; a second lap portion outer panel 3220; the second groove portion 3221; a second rubber strip 3222; clamp plate middle part 3300; a splint groove 3400;

a chain link cover plate 4; a cover main body 401; a bonding portion 402; a cover plate groove 403;

a vertical spacer 5; a footing 501; a footing fixation strip 502.

Detailed Description

The technical solutions in the embodiments of the present disclosure will be described clearly and completely with reference to the accompanying drawings, and it is to be understood that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present disclosure without any creative effort also belong to the protection scope of the present invention.

The utility model comprises a drag chain with a separator inside, which comprises a plurality of chain links connected with each other by hinges, and a separator arranged inside the chain links and used for separating the space in the length direction of the drag chain; the chain link comprises two clamping plates 3 which are arranged in a mirror surface mode and a cross lath 4 which is used for connecting the two clamping plates 3; the clamping plates 3 are provided with overlapping parts, and the adjacent clamping plates 3 are hinged with each other through the overlapping parts and can rotate on the same plane.

As shown in fig. 1, the preferred low noise drag chain for the present application, the drag chain 1 comprises a plurality of links 2 hinged to each other, the links 2 comprise two clamping plates 3 arranged in parallel and mirror symmetry to each other, and the two corresponding clamping plates 3 are connected by a cross bar 4, and preferably, the two cross bar 4 connects the upper and lower ends of the two clamping plates 3 respectively, so as to stabilize the shape of the links 2.

The cross bar 4 is arranged to fix the position of the two clamping plates 3, and any clamping plate 3 cannot move towards other positions of the plane or directions outside the plane, and the combination of the cross bar 4 and the clamping plates 3 forms a whole body and can rotate integrally relative to other connected chain links 2.

Preferably, at least one of the cross slats 4 connected to the upper and lower ends of the splint 3 is openable, which means that at least one end is disconnected from the splint 3 and the drag chain is partially or wholly exposed to the inside. When the cross lath 4 is opened, the cables, oil pipes, air pipes, water pipes and other pipelines can be arranged in the channel of the drag chain consisting of the clamping plate 3 and the cross lath 4.

As shown in fig. 2a to 2e, the preferred splint 3 comprises a first overlapping portion 3100 at an upper portion of the splint 3 and a second overlapping portion 3200 at a lower portion of the splint 3, the first overlapping portion 3100 overlapping the first overlapping portion 3100 of the adjacent splint 3, and the second overlapping portion 3200 overlapping the second overlapping portion 3200 of the adjacent splint 3, so that the assembled splints 3 can be connected in a plane, thereby maintaining the lateral stability of each link 2.

The first lap portion 3100 comprises a first lap portion inner panel 3110 and a first lap portion outer panel 3120, both of which are attached to the middle portion 3300 and extend in a direction toward the adjacent cleat 3. The inner side and the outer side are determined by the positions of the adjacent lap joint parts during lap joint, and during lap joint, the inner side is exposed inside the drag chain, and the outer side is exposed outside the drag chain.

The cross section of the first overlapping portion 3100 is in a step shape, based on the middle portion 3300 of the cleat, the portion facing the inner side of the drag chain extends in the direction of the adjacent drag chain to form a first overlapping portion inner side plate 3110, the portion facing the outer side of the drag chain extends in the direction opposite to the extending direction of the first overlapping portion inner side plate 3110 to form a first overlapping portion outer side plate 3120, and preferably, the adjacent surfaces of the first overlapping portion inner side plate 3110 and the first overlapping portion outer side plate 3120 are in the same plane. When the links 2 are assembled, the first lap portion inside plate 3110 overlaps the first lap portion outside plate 3120 of an adjacent link 2, and the first lap portion outside plate 3120 overlaps the first lap portion inside plate 3110 of another adjacent link 2.

The first lap portion inner side plate 3110 is provided with a first protrusion 3111 protruding toward the lap portion of the adjacent splint 3, the first lap portion outer side plate 3120 of the adjacent splint 3 is provided with a first groove portion 3121 corresponding to the first protrusion 3111, the height of the first groove portion 3121 is equal to the height of the first protrusion 3111, and the adjacent splint 3 can be prevented from moving in the longitudinal direction; the width of the first groove portion 3121 is greater than the width of the first protrusion 3111, so that the adjacent clamping plates 3 can be displaced in the width direction of the groove portion, and the adjacent clamping plates 3 are provided with protrusions overlapping in height with respect to one another, which at least or only at the overlapping part of the adjacent links 2 in the flat position of the drag chain prevent a relative height offset of the adjacent clamping plates 3 or links 2. The first groove portion 3121 is shaped as a sector, and both upper and lower sides of the first groove portion 3121 are arc-shaped, and when the adjacent clamping plates 3 relatively move, both ends of the first protrusion 3111 can move along the arc-shaped, so that the adjacent clamping plates 3 are rotatably connected together.

It is preferable that either left or right end of the first groove portion 3121 is provided with a first rubber strip 3122 using an elastically deformable material having a higher elastic modulus than that of a material for the chucking plate 3 as a noise deadening means for noise generated when the first protrusion portion 3111 hits the first groove portion 3121. Optionally, the left and right ends of the first groove portion 3121 are provided with first rubber strips 3122, and the size and shape of the rubber strips are determined according to the shapes of the two ends of the first groove portion 3121. In other preferred embodiments, a side wall of the first groove portion 3121 may be selected to have a higher elastic modulus than that of the clamping plate 3 portion to perform the noise reduction function.

The second web 3200 includes a second web inner side plate 3210 and a second web outer side plate 3220, and both the second web inner side plate 3210 and the second web outer side plate 3220 are connected to the splint middle portion 3300 and each extend toward the adjacent splint 3. The inner side and the outer side are determined by the positions of the adjacent lap joint parts during lap joint, and during lap joint, the inner side is exposed inside the drag chain, and the outer side is exposed outside the drag chain.

The section of the second overlapping part 3200 is in a step shape, based on the middle part 3300 of the clamping plate, the part of the middle part 3300 facing the inner side of the drag chain extends to the direction of the adjacent drag chain to form a second overlapping part inner side plate 3210, the part of the middle part 3300 facing the outer side of the drag chain extends to the direction opposite to the extending direction of the second overlapping part inner side plate 3210 to form a second overlapping part outer side plate 3220, and preferably, the adjacent surfaces of the second overlapping part inner side plate 3210 and the second overlapping part outer side plate 3220 are located on the same plane. When the links 2 are assembled, the second overlap inner side plate 3210 overlaps the second overlap outer side plate 3220 of an adjacent link 2, and the second overlap outer side plate 3220 overlaps the second overlap inner side plate 3210 of another adjacent link 2.

The second overlapping part inner side plate 3210 is provided with a second protruding portion 3211 protruding toward the overlapping part of the adjacent splint 3, the second overlapping part outer side plate 3220 of the adjacent splint 3 is provided with a second groove portion 3221 corresponding to the second protruding portion 3211, the height of the second groove portion 3221 is equal to the height of the second protruding portion 3211, so as to prevent the adjacent splint 3 from moving in the longitudinal direction; the width of the second groove 3221 is greater than the width of the second protrusion 3211, so that the adjacent clip plates 3 can move in the width direction of the groove, and the adjacent clip plates 3 are provided with protrusions overlapping each other in height, which at least or only at the overlapping portion of the adjacent links 2 in the flat position of the drag chain prevent the adjacent clip plates 3 or links 2 from being displaced in height relative to each other. The second groove portion 3221 is shaped like a sector, and the upper and lower sides of the second groove portion 3221 are arc-shaped, so that when the adjacent clamping plates 3 move relatively, the two ends of the second protruding portion 3211 can move along the arc-shaped, so that the adjacent clamping plates 3 can be rotatably connected together.

It is preferable that either of the left and right ends of the second groove portion 3221 is provided with a second rubber strip 3222 which is made of an elastically deformable material having a higher elastic modulus than that of the material for the chucking plate 3 as a noise-reducing means for noise generated when the second projecting portion 3211 hits the second groove portion 3221. Optionally, the second rubber strip 3222 is disposed at both left and right ends of the second groove 3221, and the size and shape of the rubber strip are determined according to the shapes of both ends of the second groove 3221, respectively. In other preferred embodiments, a sidewall of the second concave portion 3221 may be made of a material with a higher elastic modulus than that of the clamping plate 3 to perform the sound attenuation function.

The first protruding portion 3111 and the second protruding portion 3211 are respectively disposed on two sides of the middle portion 3300 of the clamping plate, and similarly, the first groove portion 3121 and the second groove portion 3221 are respectively disposed on two sides of the middle portion 3300 of the clamping plate. Preferably, the up-down positional relationship between the first overlapping portion 3100 and the second overlapping portion 3200 is not limited, and in other embodiments, the position of the first overlapping portion 3100 may be interchanged with that of the second overlapping portion 3200.

Preferably, the first protrusion 3111 may be disposed on the first lap portion outer panel 3120, and the first groove portion 3121 is disposed on the first lap portion inner panel 3110; the second protrusion portion 3211 may be disposed on the second overlapping portion outer side plate 3220, and the second groove portion 3221 may be disposed on the second overlapping portion inner side plate 3210.

The chain links 2 are connected to one another by means of hinge elements 5, which hinge elements 5, according to fig. 1 and 2a to 2e, each precisely connect two adjoining clamping plates 3 to one another. The hinge elements 5 are of a plate-like construction, extend along the thickness of the clamping plates 3 and are of the same thickness as the clamping plates 3. The middle end of the hinge element 5 is provided with an elastically deformable part which is bent upon relative rotation of adjacent hinges. The width and length of the elastically deformable part of the hinge element 5 are in this case a multiple of its thickness.

Both sides of the clamping plate 3 are provided with clamping plate grooves 3400, and hinge elements 5 are installed in the clamping plate grooves 3400. The clamping plate recesses 3400 are open in the direction of their adjacent links 2, and the hinge elements 5 can be inserted laterally from the clamping plate 3 into the clamping plate recesses 3400 and fixed therein. When adjacent links 2 are rotated relative to each other, the middle of the hinge element 5 bends, and the hinge element 5 exerts an elastic restoring force on the adjoining link plates after bending from its rest position. In other preferred embodiments, the hinge element 5 may also exert no elastic restoring force.

As shown in fig. 1, in the preferred embodiment of fig. 1, when the drag chain is not deformed, the links 2 are combined into a straight line shape, as shown in the upper section (flat section) of the drag chain, the clamping plate 3 has a certain inclination, the first protrusion 3111 and the second protrusion 3211 are respectively embedded in the middle of the first groove 3121 and the second groove 3221, and can move in two directions of the first groove 3121 and the second groove 3221, as shown in the deformed section of the drag chain, the first protrusion 3111 moves in the first direction in the first groove 3121, the outer ring of the drag chain assumes an expanded posture, and the second protrusion 3211 moves in the second groove 3221 in a direction opposite to the first direction, and the inner ring of the drag chain assumes a contracted posture. The bending of the drag chain is accomplished by the first protrusion 3111 and the second protrusion 3211 moving in opposite directions in the first groove 3121 and the second groove 3221, respectively. The inclination of the cleats 3 preferably provides a bending bias for the drag chain, which has a greater curvature in a direction perpendicular to its inclination when the cleats 3 are at a certain inclination. Thus, in other preferred embodiments, the inclination of the cleat 3 may be adjusted to adjust the bending bias, and thus the bending of the tow chain, and likewise the cleat 3 may not be provided with an inclination.

The application comprises a low-noise drag chain provided with a chain link cover plate 4, which comprises a plurality of chain links 2 connected with each other in an articulated manner, wherein each chain link 2 comprises two clamping plates 3 arranged in a mirror surface manner, each clamping plate 3 is provided with an overlapping part, and the adjacent clamping plates 3 are mutually articulated through the overlapping parts and can rotate on the same plane;

the drag chain also comprises chain link cover plates 4 which are connected with the opposite clamping plates 3 and are respectively arranged at the upper end and the lower end of the clamping plates 3; the adjacent link cover plates 4 are joined end to close the drag chain.

The technical characteristics of the splint 3 before in this specification can be applied to the utility model discloses a be provided with in the splint 3 in the low noise tow chain of chain link apron 4, horizontal bar 4 in the above-mentioned tow chain can be selected in this technical scheme to replace with the chain link apron 4, horizontal bar 4 is unanimous with the connected mode of chain link apron 4 on the apron to can replace each other. That is, the two ends of the chain link 2 in the low noise drag chain provided with the chain link cover plate 4 are connected by the chain link cover plate 4 or are partially connected by the chain link cover plate 4 and are partially connected by the transverse lath 4. The specific implementation mode needs to be determined according to the actual environment.

In a preferred low noise drag chain with a link cover plate 4, the link cover plate 4 includes a cover plate main body 401 and a coupling portion 402, and one end of the coupling portion 402 may be inserted under one end of the adjacent cover plate main body 401.

When the drag chain is flat, two contacted ends of the adjacent chain link cover plates 4 are arranged in parallel, if the sealing property needs to be ensured, the adjacent chain link cover plates 4 need to be arranged in a close manner, and when the drag chain is bent, the two contacted ends are extruded inevitably, so that the drag chain cannot be bent normally; if adjacent chain link apron 4 interval certain distance sets up, can guarantee that the both ends of contact do not produce the extrusion, the tow chain is normal crooked, nevertheless the closure can not be guaranteed to the tow chain. The utility model discloses a solve above-mentioned problem, as shown in figure 3a, 3b, the technical scheme of adoption is: the chain link cover plate 4 comprises a cover plate main body 401 and a connecting part 402, one end of the connecting part 402 can be embedded below one end of the adjacent cover plate main body 401, the cover plate main body 401 extends towards the direction of the adjacent cover plate main body 401 and extends to the lower side of the opposite side surface of the adjacent cover plate main body 401, and the extending part is the connecting part 402. Preferably, an insertion position for inserting the coupling portion 402 of the adjacent link cover 4 is provided below the other side of the cover main body 401 connected to the coupling portion 402.

When the drag chain adopting the technical scheme is flat, the adjacent cover plate main bodies 401 are parallel to each other, and one end of the joint part 402 of the chain link cover plate 4 is embedded below the adjacent cover plate main bodies 401, so that the cover plate end of the drag chain is in a closed state. When the drag chain is bent, the joint part 402 and the adjacent cover plate main body 401 are not in the same plane, so that extrusion is avoided, and when the drag chain is bent, one end of the joint part 402 of the chain link cover plate 4 is still embedded below the adjacent cover plate main body 401, so that the closure can be ensured when the drag chain is bent.

In a preferred embodiment the joint 402 in the link cover 4 is provided with a slope from the joint end with the cover body 401 towards the inside of the drag chain, said slope pointing below the adjacent cover body 401. The cross-section of the joint 402 is shown as an arc. The thickness of the joint part 402 is gradually reduced from the end of the connected cover plate main body 401 to the other end, the connecting end of the joint part 402 and the cover plate main body 401 is an upper slope section, and the other end is a lower slope section. When the tow chain is flat, the adjacent cover plate main bodies 401 are parallel to each other, and the lower slope section is embedded below the adjacent cover plate main bodies 401, so that the cover plate end of the tow chain reaches a closed state. When the drag chain is bent, the lower slope section is still embedded below the adjacent cover plate main body 401, so that the closure can be ensured when the drag chain is bent. The coupling portion 402, which is provided with a slope, provides a larger bending angle when the tow chain is bent, and the slope is similar to the bending angle visually, and is more attractive.

In a preferred embodiment, as shown in fig. 3b, the inner side of the chain link cover plate 4 is provided with a cover plate groove 403, the cover plate groove 403 is used for installing a vertical spacer 5, and the vertical spacer 5 is used for dividing the space inside the drag chain. The vertical spacer 5 is shown in fig. 4a and 4b, and fig. 4c is a schematic structural view of a drag chain for installing the vertical spacer. .

The cover plate groove 403 includes two fixing grooves, and the fixing grooves penetrate through the chain link cover plate 4 along the length direction. When erecting spacer 5 in the installation, four apex angles of erecting spacer 5 be provided with footing 501, footing 501 be provided with along erecting spacer 5 vertical direction's fixed strip 502, should erect spacer 5 the upper and lower both ends and be provided with two fixed strips 502 respectively, fixed strip 502 can inlay the fixed slot in. The fixing strips 502 are respectively embedded in fixing grooves of the chain link cover plates 4 at the upper end and the lower end of the chain link 2, and the fixing of the vertical spacer 5 is completed.

Preferably, the vertical spacer 5 can adjust the position along the direction of the fixed groove, and can adjust the division of the internal space of the drag chain. This application does not restrict the quantity of setting up in the fixed slot and erects spacer 5 simultaneously, can set up at least one arbitrary quantity in the fixed slot of this application erect spacer 5.

In a preferred embodiment, the chain link cover plate 4 is connected with the clamping plate 3 through a buckle, female buckles perpendicular to the clamping plate 3 and extending into the drag chain are arranged on the upper end and the lower end of the clamping plate 3, and male buckles corresponding to the female buckles are arranged at two ends of the chain link cover plate 4. The transverse web 4 and the chain link cover 4 described above are connected to the clamping plate 3 in the same way as described above. The connection mode is a buckling mode. The female buckle extends for a certain distance from the two ends of the clamping plate 3 along the inner part of the drag chain in the vertical direction of the clamping plate 3, male buckles are correspondingly arranged at the two ends of the chain link cover plate 4, and the chain link cover plate 4 can be pressed down towards the female buckle to complete the buckling connection. The connection is quick, simple and firm.

The link cover plates 4 are shaped as flat rectangles, the shape of which is determined by the exposed top and bottom shapes between the opposing clamping plates 3, the link cover plates 4 are adapted to the shape and cover the upper and lower surfaces of the tow chain, completing the closure of the tow chain.

As used in this application and the appended claims, the terms "a," "an," "the," and/or "the" are not intended to be inclusive in the singular, but rather are intended to be inclusive in the plural unless the context clearly dictates otherwise. The terms "first" and "second" are not limiting words, and are used for explanation only and understanding of the technical solution of the present invention, and the terms "first" and "second" may be substituted for each other. In general, the terms "comprises" and "comprising" merely indicate that steps and elements are included which are explicitly identified, that the steps and elements do not form an exclusive list, and that a method or apparatus may include other steps or elements.

The components, relative arrangements, functions, and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it is apparent that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods and apparatus that are known to those of ordinary skill in the relevant art have not been described in detail for the time being, but are intended to be part of the specification as appropriate. In all examples shown and discussed herein, any particular value should be construed as exemplary only and not as limiting.

The foregoing is illustrative of the present invention and is not to be construed as limiting thereof. Although a number of exemplary embodiments of the present invention have been described, those skilled in the art will readily appreciate that many modifications may be made to the exemplary embodiments without departing from the technical features of the present invention. Accordingly, all such modifications are intended to be included within the scope of this invention as defined in the claims. It is to be understood that the foregoing is illustrative of the present invention and is not to be construed as limited to the specific embodiments disclosed, and that modifications to the disclosed embodiments, as well as other embodiments, are intended to be included within the scope of the appended claims. The invention is defined by the claims and their equivalents.

Claims (8)

1. A drag chain with a chain link cover plate is characterized by comprising a plurality of chain links which are hinged with each other, wherein each chain link comprises two clamping plates which are arranged in a mirror surface mode, overlapping parts are arranged on the clamping plates, and the adjacent clamping plates are hinged with each other through the overlapping parts and can rotate on the same plane;

the drag chain also comprises opposite clamping plates and chain link cover plates respectively arranged at the upper end and the lower end of the clamping plates; the adjacent chain link cover plates are jointed end to end so as to close the drag chain.

2. The tow chain with link cover according to claim 1, wherein the link cover comprises a cover body and a joint, one end of the joint can be inserted under one end of the adjacent cover body.

3. The tow chain provided with link cover plates according to claim 2, wherein the joint in the link cover plate is provided with a slope from the joint end with the cover body toward below the adjacent one end of the cover body.

4. The tow chain with the chain link cover plate according to claim 1, wherein the inner side surface of the chain link cover plate is provided with a cover plate groove, the cover plate groove is used for installing a vertical partition plate, and the vertical partition plate is used for dividing the space inside the tow chain.

5. The tow chain with the link cover plates as claimed in claim 4, wherein the cover plate grooves are formed along the length direction of the tow chain cover plates, and the vertical partition plates are installed between the link cover plates which are opposite up and down.

6. The drag chain with link cover plate of claim 1, wherein the link cover plate is connected with the clamping plate by a snap fit.

7. The tow chain with the chain link cover plate as claimed in claim 6, wherein the upper and lower ends of the clamping plate are provided with female fasteners which are perpendicular to the clamping plate and extend into the tow chain, and the two ends of the chain link cover plate are provided with male fasteners which correspond to the female fasteners.

8. Drag chain provided with link cover plates according to claim 1, characterized in that the link cover plates are shaped as flat cuboids.

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