Clamping and releasing device

Abstract

The utility model relates to the field of clamping and releasing devices, in particular to a clamping and releasing device. Comprising clamps and pull rods. The number of the clamps is at least three, the middle of any clamp is hinged to the pull rod through a connecting rod, the side wall of one end of each clamp is arranged to be an abutting end abutting against materials, a sliding block is hinged to the other end of each clamp, and the sliding blocks are in sliding fit with the pull rod in the length direction of the pull rod. The sliding block abuts against a reset piece, the reset piece exerts acting force on the sliding block, and the acting force enables the hinged end of the connecting rod and the pull rod to be lower than the hinged end of the connecting rod and the clamp or to have the tendency to be lower than the hinged end of the connecting rod and the clamp. According to the submerged arc welding wire clamping device, the three clamps are arranged, and the hinged structure of the connecting rods and the pull rods is utilized, so that when external equipment drives the pull rods to ascend, the clamps can automatically adapt to the submerged arc welding wire of an annular structure, self-centering clamping is achieved, and the problems of slipping and uneven clamping in the clamping process are solved.

Description

Technical Field

[0001] This utility model relates to the field of clamping and placing devices, and in particular to a clamping and placing device. Background Technology

[0002] 250kg and 350kg submerged arc welding wires are designed specifically for large-scale, high-consumption industrial welding scenarios and are widely used in automated and semi-automated production lines in fields such as shipbuilding, pipelines, and heavy machinery. In submerged arc welding operations, they are typically stored and transported in coiled bundles for efficient utilization and to reduce space occupation.

[0003] However, when moving these bundles of submerged arc welding wire from one location to another, how to clamp and transport them safely, stably, and efficiently becomes a key issue. Traditional clamping devices often struggle to accommodate the annular structure of submerged arc welding wire, and slippage or uneven clamping can easily occur during the clamping process. This not only affects work efficiency but may also damage the welding wire. Utility Model Content

[0004] The purpose of this invention is to provide a clamping device to solve the problem that existing clamping devices do not have a good clamping effect on submerged arc welding wire.

[0005] The technical solution of this utility model is: a clamping device, including a clamp and a pull rod;

[0006] The clamps are configured to be at least three, with the middle of any clamp hinged to the pull rod via a connecting rod, and the side wall of one end of the clamp is configured as an abutment end that abuts against the material, and the other end is hinged to a slider, which slides along the length of the pull rod.

[0007] The slider abuts against a reset member, which applies a force to the slider. This force causes the hinge end of the connecting rod and the pull rod to be lower than the hinge end of the connecting rod and the clamp, or tends to be lower than the hinge end of the connecting rod and the clamp.

[0008] Preferably, the clamp comprises a first part and a second part fixedly formed, the end of the first part away from the second part is hinged to a slider, and the second part forms an angle with the first part and is hinged to a connecting rod.

[0009] Preferably, a support member is installed on the side wall of the second part away from the pull rod, and the clamp abuts against the material through the support member; the bottom end of the support member is bent away from the pull rod.

[0010] Preferably, the slider has a through hole along its own axis and is thus fitted onto the outer wall of the pull rod; the slider has a hinge portion extending radially, and a connector is provided through the hinge portion to hinge with the clamp.

[0011] Preferably, a fixing block is fixed to the bottom end of the pull rod, the upper end face of the fixing block abuts against the reset member, and the reset member performs telescopic movement between the upper end face of the fixing block and the lower end face of the slider.

[0012] Preferably, the reset element is a spring.

[0013] Preferably, a lifting ring is fixed to the top of the pull rod.

[0014] Compared with the prior art, the advantages of this utility model are:

[0015] (1) This application sets up three clamps and utilizes the hinge structure of the connecting rod and the pull rod so that when the external equipment drives the pull rod to rise, the clamps can automatically adapt to the submerged arc welding wire of the ring structure, realize self-centering clamping, and avoid slippage and uneven clamping problems during the clamping process.

[0016] (2) A support is installed on the side wall of the bottom of the second part of the fixture. The support is coated with a coating that increases friction and has an outward bending structure. It can be inserted into the gap of the submerged arc welding wire or support the bottom of the welding wire, thereby further enhancing the clamping effect and ensuring the stability and safety of the welding wire during the handling process.

[0017] (3) By setting the reset component, the slider maintains a preset distance from the bottom end of the pull rod in the initial state, and tends to move away from the bottom end of the pull rod when the pull rod is under force, thereby realizing the reset function of the slider. This design ensures the flexibility and reliability of the fixture when clamping and releasing the welding wire. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0019] Figure 1 This is a structural diagram of the clamping device described in this utility model;

[0020] Figure 2 This is a structural diagram of the clamp described in this utility model;

[0021] Figure 3 This is a structural diagram of the slider described in this utility model;

[0022] Figure 4 This is a schematic diagram of the clamping action described in this utility model;

[0023] The components are: 1. clamp, 11. first part, 12. second part, 121. support, 2. tie rod, 3. connecting rod, 4. slider, 41. through hole, 42. hinge, 5. reset part, 6. connecting part, 7. fixing block, 8. lifting ring. Detailed Implementation

[0024] The present invention will be further described in detail below with reference to specific embodiments:

[0025] like Figure 1 As shown, a clamping device is used for clamping and transporting coiled bundles of submerged arc welding wire. It includes a clamp 1 and a pull rod 2. The pull rod 2 is driven to move vertically by an external device (such as an overhead crane), which can drive the clamp 1 to perform clamping action.

[0026] In practical applications, the coiled and bundled submerged arc welding wire is basically in the form of a ring structure. Therefore, the clamp 1 needs to have the ability to self-center when clamping it. Therefore, in this embodiment, the clamp 1 is set to three.

[0027] The structure that enables the lever 2 to drive the clamp 1 to hold the object is as follows, combined with Figure 4 As shown, the middle part of any clamp 1 is hinged to the pull rod 2 via a connecting rod 3, and the hinge end of the connecting rod 3 and the pull rod 2 is lower than the hinge end of the connecting rod 3 and the clamp 1 in the initial state. One side wall of any clamp 1 is set as an abutment end that abuts against the material, and the other end is hinged to a slider 4, which slides against the pull rod 2. It also has a reset member 5, which is a spring in this embodiment. The two ends of the reset member 5 along the length of the pull rod 2 abut against the pull rod 2 and the slider 4 respectively, so that the slider 4 maintains a preset distance from the bottom end of the pull rod 2 in the initial state, and when the pull rod 2 is subjected to force, the slider 4 tends to move away from the bottom end of the pull rod 2, thereby resetting the slider 4.

[0028] This configuration ensures that when the external device drives the pull rod 2 to rise, the hinged end of the connecting rod 3 and the pull rod 2 rises, which is essentially different from the hinged end of the clamp 1. The difference in the rising speed of these two hinged ends causes the connecting rod 3 to undergo a process of changing from an incline to a straight line. This causes the middle part of the clamp 1 to expand outward in a direction away from the pull rod 2 and abut against the inner wall of the submerged arc welding wire, thus achieving clamping.

[0029] Specifically, such as Figure 2 As shown, the clamp 1 is fixedly formed by a first part 11 and a second part 12, which are set as two integrally formed parts on the clamp 1.

[0030] The second part 12 is generally vertical, and the side wall at the bottom end is used to abut against the submerged arc welding wire. In order to achieve a better clamping effect, a support member 121 is installed on the side wall at the bottom end by welding. The outer wall of the support member 121 away from the tie rod 2 can be coated with a coating that can increase friction. In this embodiment, the bottom end of the support member 121 has an outward bend. This bend structure can be inserted into the gap of the submerged arc welding wire or support the bottom of the submerged arc welding wire, thereby further enhancing the clamping effect.

[0031] The first part 11 and the second part 12 form an angle, such that the first part 11 is inclined toward the pull rod 2. A hole is opened at the end of the first part 11 away from the second part 12 for hinge with the slider 4.

[0032] like Figure 3 As shown, the main structure of the slider 4 is annular, with a through hole 41 along its own axis, and it is fitted onto the outer wall of the pull rod 2 through the through hole 41. The outer wall of the annular structure has hinged portions 42 extending radially outward from the three clamps 1. The hinged portions 42 have connecting holes in the horizontal direction and are hinged to the clamps 1 through connecting pieces 6 that pass through the connecting holes.

[0033] A fixing block 7 is coaxially fixed to the bottom of the pull rod 2. The fixing block 7 has a diameter larger than that of the pull rod 2, so that the upper end face of the fixing block 7 can be abutted by the reset member 5, and the reset member 5 can move telescopically between the upper end face of the fixing block 7 and the lower end face of the slider 4.

[0034] In addition, a lifting ring 8 is fixed at the top of the pull rod 2, which makes it easier for external equipment to be connected to the pull rod 2.

[0035] During work:

[0036] First, ensure the clamping device is in its initial state, i.e., the pull rod 2 is in its lowest position, the three clamps 1 are hinged to the pull rod 2 via the connecting rod 3, and due to the action of the reset component 5, the slider 4 maintains a preset distance from the bottom end of the pull rod 2. At this time, the clamps 1 are in the open state, ready to clamp the welding wire.

[0037] Next, using external equipment, the lifting ring 8 is connected to the top of the tie rod 2, and preparation is made to lift the tie rod 2. As the tie rod 2 rises, the hinged end of the connecting rod 3 and the tie rod 2 begins to rise. However, because the lifting speed of the hinged end of the connecting rod 3 and the clamp 1 is relatively slow, the connecting rod 3 gradually changes from an inclined position to a straight position. During this process, the middle part of the clamp 1 expands outward in a direction away from the tie rod 2, so that the abutting end of the clamp 1 gradually contacts the inner wall of the coiled submerged arc welding wire and generates a clamping force.

[0038] As the pull rod 2 continues to rise, and the clamp 1 fully holds the welding wire, the external equipment can stably lift the welding wire for transport. During transport, the clamp 1 can abut against the inner wall of the welding wire to prevent it from slipping or loosening.

[0039] When the welding wire needs to be placed in the target position, the external equipment stops lifting and slowly lowers the pull rod 2. As the pull rod 2 descends, the hinge end of the connecting rod 3 and the pull rod 2 begins to descend, and the clamp 1 begins to gradually reset due to the action of the reset member 5. That is, the slider 4 moves towards the bottom of the pull rod 2 under the push of the spring, so that the clamp 1 gradually releases the welding wire.

[0040] Finally, when the pull rod 2 descends to its lowest position, the clamp 1 completely releases the welding wire, completing one clamping and handling operation. At this point, the connection between the external equipment and the pull rod 2 can be disconnected, and preparations can be made for the next operation.

[0041] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. It is obvious to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and therefore, all changes falling within the meaning and scope of the equivalents of the claims are intended to be included within this utility model.

Claims

1. A clamping device, characterized in that The device comprises a clamp (1) and a pull rod (2); The clamp (1) is provided in at least three, the middle part of any clamp (1) is hinged to the pull rod (2) through a connecting rod (3), and the side wall of one end of the clamp (1) is provided as an abutting end abutting against the material, and the other end is hinged to a sliding block (4) which is slidingly matched with the pull rod (2) along the length direction of the pull rod (2); The sliding block (4) is abutted by a reset member (5) which applies a force to the sliding block (4), and the force makes the hinged end of the connecting rod (3) and the pull rod (2) lower than the hinged end of the connecting rod (3) and the clamp (1) or has a tendency to be lower than the hinged end of the connecting rod (3) and the clamp (1).

2. A clamp device according to claim 1, wherein The clamp (1) comprises a first part (11) and a second part (12) fixedly formed, the end of the first part (11) away from the second part (12) is hinged to the sliding block (4), and the second part (12) forms an angle with the first part (11) and is hinged to the connecting rod (3).

3. A clamp device according to claim 2, wherein The second part (12) is provided with a support member (121) on the side wall away from the pull rod (2), and the clamp (1) abuts against the material through the support member (121); the bottom end of the support member (121) is bent towards the direction away from the pull rod (2).

4. A clamp device according to claim 3, wherein The sliding block (4) is provided with a through hole (41) along the axis thereof, and is thus sleeved on the outer wall of the pull rod (2); the sliding block (4) extends radially to have a hinged part (42), and a connecting member (6) is arranged through the hinged part (42) to hinge the clamp (1).

5. A clamp device according to claim 4, wherein The bottom end of the pull rod (2) is fixed with a fixed block (7), the upper end surface of the fixed block (7) abuts against the reset member (5), and the reset member (5) performs telescopic movement between the upper end surface of the fixed block (7) and the lower end surface of the sliding block (4).

6. The holder of claim 1, wherein The reset member (5) is a spring.

7. The holder of claim 1, wherein The top end of the pull rod (2) is fixed with a lifting ring (8).

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