Traction chain tensioning mechanism and device

Abstract

The invention belongs to the technical field of welding equipment, and particularly relates to a traction chain tensioning mechanism and device.The tensioning mechanism comprises a load platform, a containing base, an elastic piece, a first chain connector and a second chain connector, the first end of the load platform is connected with the containing base, the elastic piece is contained in the containing base, and the second end of the load platform is connected with the second chain connector; the first chain joint is arranged in the accommodating seat in a penetrating manner, is matched with the elastic piece in an abutting manner, and is used for adjusting the relative position between the first chain joint and the load platform; the second end of the load platform is connected with a second chain connector, and an adjusting assembly is arranged between the second chain connector and the load platform and used for adjusting the relative position between the second chain connector and the load platform. According to the tensioning device, it can be guaranteed that the tensioning component in the containing base is clean and tidy, the internal tensioning component and the like are prevented from being polluted, the uncertainty of tensioning work caused by pollution or foreign matter is prevented, and the working stability is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of welding equipment, and in particular relates to a traction chain tensioning mechanism and a device. Background Art

[0002] In welding equipment, the carrier worktable needs to be driven by a gear chain during the lifting process. The chain will wear out during operation, causing the chain to loosen. In addition, the tight side of the chain is always in a tensioned state, while the loose side is in a relaxed state. Once the chain is relaxed excessively, it will cause abnormal transmission of the chain, vibration, climbing or tooth jumping, and even damage the chain. Therefore, a chain tensioning device is required during the chain transmission process.

[0003] For example, the patent document with publication number CN104421389A discloses a tensioner for a traction device, but the device has obvious defects in the welding process. The welding equipment generates dust during the welding process, causing the chain tensioner to be contaminated by the dust, and the exposed elastic parts will be covered with dust, which cannot ensure the normal operation of the tensioner. During the welding process, especially when welding products, it may be necessary to place some finished small parts, such as screws, nuts, etc. If these foreign objects fall on the tensioning elastic parts, the tensioning elastic parts will be blocked, which will cause the chain to fail to move.

[0004] Based on this, it is necessary to improve the defects in the prior art to overcome the shortcomings in practical applications. Summary of the invention

[0005] Based on the above-mentioned shortcomings and deficiencies in the prior art, one of the objects of the present invention is to at least solve one or more of the above-mentioned problems in the prior art. In other words, one of the objects of the present invention is to provide a traction chain tensioning mechanism and device that meets one or more of the above-mentioned needs.

[0006] In order to achieve the above-mentioned object of the invention, the present invention adopts the following technical solutions:

[0007] The present invention provides a traction chain tensioning mechanism, comprising a load platform, a accommodating seat, an elastic member, a first chain joint and a second chain joint, wherein the first end of the load platform is connected to the accommodating seat, an elastic member is accommodated in the accommodating seat, the first chain joint is passed through the accommodating seat and cooperates with the elastic member to adjust the relative position between the first chain joint and the load platform; the second end of the load platform is connected to the second chain joint, and an adjustment component is provided between the second chain joint and the load platform to adjust the relative position between the second chain joint and the load platform.

[0008] As a preferred solution, the accommodating seat is provided with a accommodating cavity and a through groove, the elastic member is built into the accommodating cavity, and the first chain joint is arranged through the through groove.

[0009] As a preferred solution, there are two accommodating cavities, elastic members are respectively installed in the two accommodating cavities, and the top ends of the two elastic members are respectively in contact with the first chain joint.

[0010] As a preferred solution, there is one accommodating cavity, an elastic member is installed in the accommodating cavity, and the first chain connector passes through the elastic member and is in conflict with the elastic member.

[0011] As a preferred solution, a closed cavity is formed between the accommodating cavity and the first chain joint, and the first chain joint presses the elastic member into the accommodating cavity.

[0012] As a preferred solution, the first chain joint includes an abutting portion and an inserting portion, the abutting portion is in abutting cooperation with the elastic member, and the inserting portion is connected to the first end chain.

[0013] As a preferred solution, the adjustment assembly includes a bolt, the accommodating seat is correspondingly provided with a threaded hole, the bolt passes through the load platform and is threadably matched with the threaded hole.

[0014] As a preferred solution, the first chain joint is provided with a plurality of first connecting grooves, in which the first end chains are inserted and connected via first connecting pins.

[0015] As a preferred solution, the second chain joint is provided with a plurality of second connecting grooves, in which the second end chains are inserted and connected via second connecting pins.

[0016] The present invention also provides a traction chain tensioning device, comprising a tensioning mechanism as described in any of the above schemes and a first end chain and a second end chain, wherein the first chain joint is transmission-connected to the first end chain, and the second chain joint is transmission-connected to the second end chain, for adjusting the tension or relaxation of the first end chain and / or the second end chain during the transmission process.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The present invention provides a traction chain tensioning mechanism, which can ensure that the tensioning components inside the accommodating seat are clean and tidy, avoid contamination of the internal tensioning components, etc., so as to prevent uncertainty in the tensioning work caused by contamination or foreign matter and improve work stability.

[0019] The present invention provides a traction chain tensioning mechanism, which can control the chain to maintain a tensioned state and a relaxed state by connecting the tensioning mechanism to the chain transmission process, thereby avoiding the chain from vibrating, climbing or tooth jumping during the transmission process, effectively protecting the chain and increasing the service life of the chain. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, without paying any creative work, they can also obtain drawings of other embodiments based on these drawings.

[0021] Figure 1 is a structural schematic diagram of a traction chain tensioning device according to an embodiment of the present invention;

[0022] Figure 2 yes Figure 1 A schematic diagram of a first state of a partial structure of the middle tensioning device;

[0023] Figure 3 yes Figure 1 A schematic diagram of a partial structure of the middle tensioning device in the second state;

[0024] Figure 4 yes Figure 1 A schematic cross-sectional view of the tensioning device;

[0025] Figure 5 is a schematic structural diagram of a receiving seat according to an embodiment of the present invention;

[0026] Figure 6 is a schematic structural diagram of a first chain joint according to an embodiment of the present invention;

[0027] Figure 7 is a schematic structural diagram of a second chain joint according to an embodiment of the present invention;

[0028] In the figure: 1 load platform, 2 accommodating seat, 21 accommodating cavity, 22 through groove, 23 threaded hole, 3 elastic member, 4 first chain joint, 41 abutting portion, 42 plug-in portion, 421 first connecting groove, 422 first connecting pin, 5 second chain joint, 51 second connecting groove, 52 second connecting pin, 6 adjusting assembly, A first end chain, B second end chain. DETAILED DESCRIPTION

[0029] In order to more clearly illustrate the embodiments of the present application, the specific implementation methods of the present application will be described below with reference to the accompanying drawings. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings and other implementation methods can be obtained based on these drawings without creative work.

[0030] In the description of the embodiments of the present application, the terms "upper", "lower", "front", "rear", etc., are based on the directions or positions shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the application. In addition, the terms "first", "second", etc. are only used to distinguish in the description and have no special meaning.

[0031] In welding equipment, the carrier workbench needs to be driven by a gear chain during the lifting process. The chain will wear during operation and cause the chain to loosen. During the operation of the chain, the tight side of the chain is always in a tensioned state, while the loose side is in a relaxed state. Once the relaxation is excessive, it will cause abnormal transmission of the chain, vibration, climbing or tooth jumping, and even damage the chain.

[0032] In order to solve the above technical problems, according to some embodiments of the present application, such as Figures 1 to 7 As shown, a traction chain tensioning mechanism is provided, including a load platform 1, a receiving seat 2, an elastic member 3, a first chain joint 4 and a second chain joint 5. The first end of the load platform 1 is connected to the receiving seat 2, the elastic member 3 is accommodated in the receiving seat 2, the first chain joint 4 is passed through the receiving seat 2, and is in contact with the elastic member 3 to adjust the relative position between the first chain joint 4 and the load platform 1; the second end of the load platform 1 is connected to the second chain joint 5, and an adjustment component 6 is provided between the second chain joint 5 and the load platform 1 to adjust the relative position between the second chain joint 5 and the load platform 1.

[0033] Specifically, the accommodating seat 2 is fixedly connected to the load platform 1, and the accommodating seat 2 is provided with an accommodating cavity 21 and a through groove 22. The elastic member 3 is built into the accommodating cavity 21, and the first chain joint 4 is arranged in the through groove 22 so that the first chain joint 4 and the accommodating seat 2 can move relative to each other.

[0034] In some specific embodiments, there are two accommodating cavities 21, which are respectively arranged on both sides of the through groove 22. An elastic member 3 is installed in the accommodating cavity 21, and the top ends of the two elastic members 3 respectively abut against the first chain joint 4. The elastic member 3 can be configured as a spring.

[0035] Furthermore, if Figure 2As shown, when the first chain joint 4 moves downward, the first chain joint 4 compresses the elastic member 3 in the accommodating cavity 21, so that the end of the first chain joint 4 and the first end chain remain in a relaxed state. Figure 3 As shown, when the first chain joint 4 moves upward, the elastic member 3 is reset, so that the end of the first chain joint 4 and the first end chain are kept in a tensioned state.

[0036] In some specific embodiments, the accommodating cavity 21 has one (not shown in the figure), the elastic member 3 is installed in the accommodating cavity 21, and the first chain joint 4 passes through the elastic member 3 and is in conflict with the elastic member 3. By providing a single elastic member, the tension or relaxation between the second chain joint and the second end chain can also be achieved, and the structure is simple and compact, saving the use cost.

[0037] In some embodiments, a closed cavity is formed between the accommodating cavity 21 and the first chain joint 4, and the first chain joint 4 presses the elastic member 3 into the accommodating cavity 21. The accommodating cavity 21 can protect the elastic member inside and prevent the elastic member from being contaminated.

[0038] Furthermore, the first chain joint 4 includes an abutting portion 41 and an inserting portion 42 , the abutting portion 41 is in contact with the elastic member 3 , the inserting portion 42 is connected to the first end chain A, and the first end chain A is detachably connected to the inserting portion 42 .

[0039] In the embodiment of the present application, the adjustment assembly 6 includes a bolt, and the receiving seat 2 is correspondingly provided with a threaded hole 23, and the bolt passes through the load platform 1 and is threadedly matched with the threaded hole 23. The upper and lower positions of the second chain joint 5 can be fine-tuned by the adjustment assembly to ensure the tension or relaxation of the second chain joint 5 and the second end chain.

[0040] Furthermore, the first chain joint 4 is provided with a plurality of first connecting grooves 421, into which the first end chain A is inserted and connected via connecting pins. The first connecting pins 421 are arranged at intervals to ensure that the first end chain A is clamped into the first connecting grooves 421 and fixed via the first connecting pins 422.

[0041] Furthermore, the second chain joint 5 is provided with a plurality of second connecting grooves 51, into which the second end chain B is inserted and connected via connecting pins. The second connecting grooves 51 are arranged at intervals to ensure that the second end chain B is clamped into the second connecting grooves 51 and fixed via the second connecting pins 52.

[0042] According to an embodiment of the present application, a traction chain tensioning device is also provided, comprising the tensioning mechanism as described above and a first end chain A and a second end chain B, wherein the first chain joint 4 is transmission-connected to the first end chain A, and the second chain joint 5 is transmission-connected to the second end chain B, for adjusting the tension or relaxation of the first end chain A and / or the second end chain B during the transmission process.

[0043] By pulling down or pushing up the first chain joint 4, the first chain joint 4 presses the elastic member 3 or the elastic member 3 resets upward, so as to tighten or relax the first end chain A. By tightening the adjustment assembly 6 downward, the second chain joint 5 moves downward, so as to tighten or relax the second chain joint.

[0044] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of associated objects, indicating that three relationships may exist. For example, X and / or Y may represent: X exists alone, X and Y exist at the same time, and Y exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0045] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0046] The above description is only a detailed description of the preferred embodiments and principles of the present application. For ordinary technicians in this field, there will be changes in the specific implementation methods based on the ideas provided by the present application, and these changes should also be regarded as the scope of protection of the present application.

Claims

1. A traction chain tensioning mechanism, characterized in that: It includes a load platform, a receiving seat, an elastic member, a first chain joint and a second chain joint. The first end of the load platform is connected to the receiving seat, and the elastic member is accommodated in the receiving seat. The first chain joint is passed through the receiving seat and cooperates with the elastic member to adjust the relative position between the first chain joint and the load platform. The second end of the load platform is connected to the second chain joint, and an adjustment component is provided between the second chain joint and the load platform to adjust the relative position between the second chain joint and the load platform.

2. A traction chain tensioning mechanism according to claim 1, characterized in that: The accommodating seat is provided with an accommodating cavity and a through groove, the elastic member is built in the accommodating cavity, and the first chain joint is arranged through the through groove.

3. A traction chain tensioning mechanism according to claim 2, characterized in that: There are two accommodating cavities, and elastic members are respectively installed in the two accommodating cavities. The top ends of the two elastic members are respectively in contact with the first chain joints.

4. A traction chain tensioning mechanism according to claim 2, characterized in that: The accommodating cavity has one, an elastic member is installed in the accommodating cavity, and the first chain connector passes through the elastic member and is in conflict with the elastic member.

5. A traction chain tensioning mechanism according to claim 2, 3 or 4, characterized in that: A closed cavity is formed between the accommodating cavity and the first chain joint, and the first chain joint presses the elastic member tightly into the accommodating cavity.

6. A traction chain tensioning mechanism according to claim 1, characterized in that: The first chain joint includes an abutting portion and an inserting portion, the abutting portion is in abutting cooperation with the elastic member, and the inserting portion is connected to the first end chain.

7. A traction chain tensioning mechanism according to claim 1, characterized in that: The adjustment assembly includes a bolt, the accommodating seat is correspondingly provided with a threaded hole, the bolt passes through the load platform and is threadably matched with the threaded hole.

8. The traction chain tensioning mechanism according to claim 1, characterized in that: The first chain joint is provided with a plurality of first connecting grooves, in which the first end chains are inserted and connected via first connecting pins.

9. A traction chain tensioning mechanism according to claim 1, characterized in that: The second chain joint is provided with a plurality of second connecting grooves, in which the second end chains are inserted and connected via second connecting pins.

10. A traction chain tensioning device, characterized in that: It comprises a tensioning mechanism as described in any one of claims 1 to 9 and a first end chain and a second end chain, wherein the first chain joint is drivingly connected to the first end chain, and the second chain joint is drivingly connected to the second end chain, for adjusting the tension or relaxation of the first end chain and / or the second end chain during the transmission process.

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