Clamping type drag chain

Abstract

The utility model relates to the technical field of drag chains, in particular to a clamping type drag chain which comprises a plurality of chain links which are hinged end to end. The middle of the top end of the front side and the middle of the top end of the rear side of each chain link are each fixedly connected with two bosses, a round rod is fixedly connected between the two bosses on the rear side, and a vertically-through clamping groove is formed in the middle of the front face of each chain link. The buckle is fixedly connected to the inner wall of the upper end of the clamping groove; and the cross rods are buckled at the tops of the chain links. The cross rod is arranged above the chain links, the cross plate can drive the U-shaped block and the round rod to rotate relative to each other by turning the L-shaped elastic body up and down, so that the cross plate can be in contact with and separated from the chain links, the L-shaped elastic body can be buckled in the clamping groove through the cooperation of the rectangular hole and the buckle, and meanwhile, disassembly can be facilitated through the oblique angle; and the two clamping plates can firmly limit the pipeline in the clamping plates under the action of the reset springs, and dislocation and winding of the pipeline are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of drag chains, in particular to a clamping drag chain. Background Art

[0002] Drag chains are suitable for use in reciprocating motion occasions and can play a role in traction and protection for built-in cables, oil pipes, gas pipes, water pipes, etc. With the increasing acceleration of the industrial automation process, drag chains are widely used in more and more automation equipment. There is a large amount of wiring and piping in automation equipment that needs to be protected so that it can operate in a stable and safe working environment. Drag chains are widely used in technical fields such as machine tools and robotic arms.

[0003] For existing drag chains, their structures are assembled by multiple chain links, and the upper ends of the chain links are connected and fixed by a cross bar. In daily work, the existing drag chains often need to be replaced or adjusted in length. However, it is not easy to assemble and disassemble the cross bar after it is installed into the chain link, and tools need to be used to pry it for disassembly, which is time-consuming and laborious. Summary of the Utility Model

[0004] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a clamping drag chain to solve the technical problem that the existing drag chains need to be disassembled with the aid of tools.

[0005] To solve the above technical problem, the utility model adopts the following technical solutions:

[0006] A clamping drag chain, comprising:

[0007] Multiple chain links, the multiple chain links are hinged to each other head to tail;

[0008] Two bosses are fixedly connected to the middle parts of the front top ends and the rear top ends of the multiple chain links, a round rod is fixedly connected between the two bosses at the rear side, and a through slot is opened in the middle of the front surface of the chain link;

[0009] A buckle, the buckle is fixedly connected to the inner wall of the upper end of the slot;

[0010] A cross bar, the cross bar is buckled on the top of the chain link, the cross bar includes a cross plate, an L-shaped elastic body is fixedly connected to the middle part of the front surface of the cross plate, a rectangular hole matched with the buckle is opened in the middle of the end of the L-shaped elastic body far away from the cross plate, a U-shaped block matched with the round rod is fixedly connected to the rear end of the cross plate, and the U-shaped block is rotationally matched with the round rod;

[0011] Two clamping plates, and the two clamping plates are oppositely arranged inside the chain link.

[0012] Further, first insertion slots are formed on both the front and rear sides of the left end of the link. Hinge columns are fixedly connected to the middle parts of the mutually remote sides of the front and rear first insertion slots. Limiting card slots are formed at the upper left ends of the two first insertion slots.

[0013] Further, second insertion slots are formed on both the front and rear inner walls of the right end of the link. Circular holes matching with the hinge columns are formed in the middle parts of both the front and rear sides of the right end of the link.

[0014] Further, a limiting protrusion is fixedly connected to the inner wall of the second insertion slot and at the left end of the circular hole. The limiting protrusion is matched with the limiting card slot.

[0015] Further, an inclined surface is arranged at the upper front end of the buckle. An inclined angle is arranged at the rear side of the end of the L-shaped elastic body far from the cross plate. The inclined angle is in sliding fit with the inclined surface.

[0016] Further, a stop block is fixedly connected to the middle part of the lower surface of the cross plate and close to one side of the L-shaped elastic body. A slope is formed at the rear end of the stop block.

[0017] Further, a chamfer is arranged at the upper front side of the link and between two bosses on the same side. The chamfer contacts with the slope of the stop block.

[0018] Further, the bottoms of the two clamping plates are both in sliding connection with the inner bottom wall of the link. A plurality of return springs are fixedly connected to the mutually remote sides of the two clamping plates. The ends of the return springs far from the clamping plates are fixedly connected to the inner wall of the link.

[0019] Further, the plurality of return springs are arranged at equal intervals from top to bottom. Three arc-shaped grooves are formed on the mutually close sides of the two clamping plates.

[0020] Further, the top of the clamping plate does not contact with the bottom of the cross plate. Guide inclined surfaces are arranged at the top ends of the mutually close sides of the two clamping plates.

[0021] The beneficial effects of the utility model:

[0022] By arranging a cross bar above the link, by turning the L-shaped elastic body up and down, the cross plate can drive the U-shaped block and the round rod to rotate relatively, so that the cross plate can contact and disengage from the link. The L-shaped elastic body can be buckled inside the card slot through the cooperation of the rectangular hole and the buckle. At the same time, the inclined angle facilitates finger disassembly; the two clamping plates can firmly limit the pipeline under the action of the return springs, avoiding dislocation and winding of the pipeline. Description of the drawings

[0023] To more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the attached drawings required for the description of the embodiments. Obviously, the attached drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other attached drawings can also be obtained based on these drawings.

[0024] Figure 1 Schematic three-dimensional structure diagram of the drag chain of the present utility model;

[0025] Figure 2 Schematic three-dimensional structure diagram of a single link of the present utility model;

[0026] Figure 3 Schematic three-dimensional structure diagram of a single link of the present utility model from another perspective;

[0027] Figure 4 Schematic three-dimensional structure diagram of the cross bar of the present utility model.

[0028] Explanation of the markings in the figure: 1. Link; 2. Cross bar; 3. Card slot; 4. Boss; 5. Round rod; 6. First insertion slot; 7. Limit card slot; 8. Hinge post; 9. Second insertion slot; 10. Limit protrusion; 11. Round hole; 12. Card board; 13. Arc groove; 14. Guide inclined surface; 15. Return spring; 16. Horizontal board; 17. U-shaped block; 18. L-shaped elastic body; 19. Rectangular hole; 20. Oblique angle; 21. Stop block; 22. Buckle. Specific embodiments

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the attached drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.

[0030] It should be understood that when used in this specification and the appended claims, the terms "comprising" and "including" indicate the presence of the described features, wholes, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components, and / or their combinations.

[0031] It should also be understood that the terms used in this specification of the present utility model are only for the purpose of describing specific embodiments and are not intended to limit the present utility model. As used in this specification of the present utility model and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an", and "the" are intended to include the plural forms.

[0032] It should also be further understood that the term "and / or" used in the specification and appended claims of the present utility model refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0033] Please refer to Figures 1-4 As shown, a cassette type drag chain includes: a plurality of chain links 1, and the plurality of chain links 1 are hinged to each other at the head and tail; two bosses 4 are fixedly connected to the middle parts of the front side top ends and the rear side top ends of the plurality of chain links 1, a round rod 5 is fixedly connected between the two bosses 4 at the rear side, and a through slot 3 is formed in the middle part of the front surface of the chain link 1; a buckle 22, and the buckle 22 is fixedly connected to the upper inner wall of the slot 3; a cross bar 2, and the cross bar 2 is buckled on the top of the chain link 1. The cross bar 2 includes a cross plate 16, an L-shaped elastic body 18 is fixedly connected to the middle part of the front surface of the cross plate 16, a rectangular hole 19 matched with the buckle 22 is formed in the middle part of the end of the L-shaped elastic body 18 away from the cross plate 16, a U-shaped block 17 matched with the round rod 5 is fixedly connected to the rear end of the cross plate 16, and the U-shaped block 17 is rotatably matched with the round rod 5; two clamping plates 12, and the two clamping plates 12 are oppositely arranged inside the chain link 1. The complete drag chain is assembled by hinging the plurality of chain links 1 at the head and tail. At the same time, by arranging the cross bar 2, the adjacent chain links 1 can be disassembled by buckling the L-shaped elastic body 18 on the buckle 22. At the same time, the cross plate 16 can limit pipelines such as cables, oil pipes, gas pipes and water pipes installed in the chain link 1, and prevent the above pipelines from detaching from the chain link 1.

[0034] During installation, the groove part of the U-shaped block 17 is clamped on the round rod 5, so that the cross plate 16 can be turned over and move without falling off. The L-shaped elastic body 18 is turned forward and pressed down, so that the L-shaped elastic body 18 is buckled with the buckle 22 through the rectangular hole 19. After pressing down to the bottom, the buckle 22 will be stuck into the rectangular hole 19, and the cross plate 16 will be buckled downwards.

[0035] Specifically, as Figure 2 and Figure 3 shown, first insertion slots 6 are formed in the front and rear sides of the left end of the chain link 1, hinge columns 8 are fixedly connected to the middle parts of the mutually remote sides of the front and rear first insertion slots 6, and limit card slots 7 are formed in the upper left ends of the two first insertion slots 6; second insertion slots 9 are formed in the front and rear inner walls of the right end of the chain link 1, and circular holes 11 matched with the hinge columns 8 are formed in the middle parts of the front and rear sides of the right end of the chain link 1. The left end of one chain link 1 is inserted into the right end of an adjacent chain link 1 on its left side, so that the first insertion slot 6 is slidably matched with the second insertion slot 9. At the same time, the hinge column 8 on one chain link 1 is inserted into the circular hole 11 at the right end of the adjacent chain link 1 on its left side. By rotating the hinge column 8 in the circular hole 11, the adjacent two chain links 1 can be hinged to each other at the head and tail, so that the two chain links 1 can rotate relative to each other at a certain angle.

[0036] Specifically, as shown in Figure 2 and Figure 3 As shown, a limiting protrusion 10 is fixedly connected to the inner wall of the second insertion slot 9 and located at the left end of the circular hole 11. The limiting protrusion 10 is matched with the limiting slot 7. Among them, after the first insertion slot 6 and the second insertion slot 9 are inserted and matched, the limiting protrusion 10 is located in the limiting slot 7. When two adjacent chain links 1 rotate relative to each other, the cooperation between the limiting slot 7 and the limiting protrusion 10 can enable two adjacent chain links 1 to rotate within a certain angle, avoiding excessive rotation angles of two adjacent chain links 1 and damaging the pipelines therein.

[0037] Specifically, as shown in Figure 2 and Figure 4 As shown, the upper end of the front surface of the buckle 22 is provided with an inclined surface, and the rear side of the end of the L-shaped elastic body 18 away from the cross plate 16 is provided with an inclined angle 20. The inclined angle 20 is in sliding fit with the inclined surface. Under the cooperation of the inclined angle 20 and the inclined surface of the buckle 22, it has a guiding effect on the pressure during the buckling process of the L-shaped elastic body 18 and the buckle 22. At the same time, the inclined angle 20 can also be used as a finger position for picking, facilitating the opening of the L-shaped elastic body 18, thereby facilitating the disassembly of the cross bar 2.

[0038] Specifically, as shown in Figure 4 As shown, a stop block 21 is fixedly connected to the middle part of the lower surface of the cross plate 16 and close to the side of the L-shaped elastic body 18. A slope is provided at the rear end of the stop block 21. A chamfer is provided between the upper front side of the chain link 1 and on the same side between the two bosses 4. The chamfer contacts the slope of the stop block 21. When the L-shaped elastic body 18 is in the buckled state, the slope of the stop block 21 can tightly contact the chamfer on the chain link 1, which can not only protect the corner of the L-shaped elastic body 18, but also enable the L-shaped elastic body 18 to be tightly buckled on the buckle 22.

[0039] Specifically, as shown in Figure 2 and Figure 3 As shown, the bottoms of the two clamping plates 12 are both slidably connected to the inner bottom wall of the chain link 1. A plurality of return springs 15 are fixedly connected to the sides of the two clamping plates 12 away from each other. The ends of the return springs 15 away from the clamping plates 12 are fixedly connected to the inner wall of the chain link 1. Under the action of the return springs 15, the two clamping plates 12 can always approach each other, so that the pipeline can be firmly limited between the two clamping plates 12.

[0040] Specifically, as shown in Figure 3 As shown, a plurality of return springs 15 are equidistantly distributed from top to bottom. Three arc-shaped grooves 13 are provided on the sides of the two clamping plates 12 close to each other. Through the setting of the arc-shaped grooves 13, pipelines with different diameters can be limited therein, and at the same time, it can further prevent the pipelines from being misaligned and entangled during the movement of the drag chain.

[0041] Specifically, as shown in Figure 2 and Figure 3As shown, the top of the clamping plate 12 does not contact the bottom of the cross plate 16, and guiding inclined surfaces 14 are provided at the top ends of the two mutually approaching sides of the clamping plate 12; the guiding inclined surfaces 14 facilitate the installation of the pipeline between the two clamping plates 12.

[0042] In summary, compared with the prior art, the cassette type drag chain has at least the following beneficial effects: in the present utility model, by arranging the cross bar 2 above the link 1 and flipping the L-shaped elastic body 18 up and down, the cross plate 16 can drive the U-shaped block 17 to rotate relative to the round rod 5, so that the cross plate 16 can contact and disengage from the link 1. The L-shaped elastic body 18 can be buckled inside the clamping groove 3 through the cooperation of the rectangular hole 19 and the buckle 22, and at the same time, the bevel angle 20 facilitates disassembly; under the action of the return spring 15, the two clamping plates 12 can firmly limit the pipeline therein, avoiding misalignment and entanglement of the pipeline.

[0043] The above is only the specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model can easily think of various equivalent modifications or substitutions, and these modifications or substitutions should be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be subject to the protection scope of the claims.

Claims

1. A cassette drag chain, characterized in that: include: A plurality of chain links (1), wherein the plurality of chain links (1) are hingedly connected end to end; Two bosses (4) are fixedly connected at the middle of the front top and the middle of the rear top of the plurality of chain links (1); a round rod (5) is fixedly connected between the two rear bosses (4); and a slot (3) penetrating from top to bottom is provided at the middle of the front face of the chain link (1); A buckle (22), wherein the buckle (22) is fixedly connected to the inner wall of the upper end of the slot (3); A cross bar (2), the cross bar (2) being buckled on the top of the chain link (1), the cross bar (2) comprising a cross plate (16), an L-shaped elastic body (18) being fixedly connected to the middle of the front side of the cross plate (16), a rectangular hole (19) cooperating with a buckle (22) being provided in the middle of one end of the L-shaped elastic body (18) away from the cross plate (16), a U-shaped block (17) cooperating with the round rod (5) being fixedly connected to the rear end of the cross plate (16), and the U-shaped block (17) being rotatably engaged with the round rod (5); A clamping plate (12), wherein two clamping plates (12) are provided, and the two clamping plates (12) are arranged opposite to each other inside the chain link (1).

2. A cassette drag chain according to claim 1, characterized in that: The chain link (1) is provided with first insertion slots (6) on both the front and rear sides of the left end, and a hinge column (8) is fixedly connected to the middle of the two first insertion slots (6) on the side away from each other, and a limit slot (7) is provided on the upper left ends of the two first insertion slots (6).

3. A cassette drag chain according to claim 1, characterized in that: The front and rear inner walls of the right end of the chain link (1) are provided with a second insertion groove (9), and the middle parts of the front and rear sides of the right end of the chain link (1) are provided with a circular hole (11) matching with the hinge column (8).

4. A cassette drag chain according to claim 3, characterized in that: A limiting protrusion (10) is fixedly connected to the inner wall of the second plug-in slot (9) and located at the left end of the circular hole (11), and the limiting protrusion (10) cooperates with the limiting slot (7).

5. A cassette drag chain according to claim 1, characterized in that: The upper front end of the buckle (22) is provided with an inclined surface, and the rear side of one end of the L-shaped elastic body (18) away from the horizontal plate (16) is provided with an inclined angle (20), and the inclined angle (20) is in sliding fit with the inclined surface.

6. A cassette drag chain according to claim 1, characterized in that: A stop block (21) is fixedly connected to the middle of the lower surface of the transverse plate (16) and close to one side of the L-shaped elastic body (18), and a slope is provided at the rear end of the stop block (21).

7. A cassette drag chain according to claim 1, characterized in that: A chamfer is provided at the front upper end of the chain link (1) and between the two bosses (4) on the same side, and the chamfer contacts the slope of the stop block (21).

8. The cassette drag chain according to claim 1, characterized in that: The bottoms of the two clamping plates (12) are slidably connected to the inner bottom wall of the chain link (1); a plurality of return springs (15) are fixedly connected to the sides of the two clamping plates (12) away from each other; and one end of the return spring (15) away from the clamping plate (12) is fixedly connected to the inner wall of the chain link (1).

9. A cassette drag chain according to claim 8, characterized in that: The plurality of return springs (15) are distributed at equal intervals from top to bottom, and three arc-shaped grooves (13) are provided on the sides of the two clamping plates (12) that are close to each other.

10. A cassette drag chain according to claim 9, characterized in that: The top of the clamping plate (12) does not contact the bottom of the transverse plate (16), and the tops of the two clamping plates (12) on the sides close to each other are both provided with a guiding inclined surface (14).

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