Universal welding clamping device for lifting machine supporting arm

Abstract

The utility model discloses a universal welding clamping device for a lifting machine supporting arm. A positioning plate is of a panel structure. First clamping pieces are fixedly arranged on the side edges of the four corners where the positioning plate is located in the vertical direction correspondingly, a middle cavity structure penetrating up and down is arranged in the middle, where a first fixing frame is located, of the first clamping pieces, and a first driving piece is used for driving a first connecting rod piece located in a middle cavity of the first fixing frame to achieve lifting motion. A first movable bulge connected with the bottom of the first connecting rod piece is synchronously enabled to deflect towards the inner side; the second clamping piece is located on the inner side where the first clamping piece is located and connected with the bottom where the positioning plate is located through a sliding piece. The distance between the first clamping piece and the second clamping piece which are located on the same clamping body is adjusted through the sliding piece, and a piece to be clamped is clamped through the clamping bodies. The second clamping pieces on the two sides of the positioning plate achieve adjustment of the relative distance between the second clamping pieces on the two sides through adjusting pieces arranged in the middle. And the whole device can clamp clamped objects of different sizes, and the adaptability is higher.

Description

Technical Field

[0001] The utility model belongs to the technical field of clamping devices, and particularly relates to a universal welding clamping device for a lifting machine support arm. Background Art

[0002] As a commonly used equipment part in industrial welding tooling, a welding clamping part ensures the stability and accuracy during the welding process. However, due to the different specifications of non-standard parts, various models of clamping parts are required to meet the clamping of clamping objects of different models. Therefore, in the actual production process, various models of clamping parts are needed, which not only makes the replacement complex but also affects the overall handling progress.

[0003] In Chinese Patent Application Publication No. CN111136417A, a welding workpiece clamping device is disclosed, which can clamp large welding workpieces and directly transport them to the welding position for welding, and the clamping and releasing of the workpieces can be automatically performed. However, in the actual use process, this structure adopts a left-right clamping method in the actual production process. Although it can adjust the clamping object, it only clamps the two sides of one angle, which belongs to linear clamping and cannot achieve the effect of surface clamping. Therefore, there is a risk of tipping during the transfer process. Summary of the Utility Model

[0004] Aiming at the deficiencies of the prior art, the purpose of the utility model is to provide a universal welding clamping device for a lifting machine support arm, which solves the above technical problems existing in the prior art.

[0005] The purpose of the utility model can be achieved by the following technical solutions:

[0006] A universal welding clamping device for a lifting machine support arm includes a positioning plate, a first clamping part, and a second clamping part.

[0007] The positioning plate is a panel structure.

[0008] At the four corners of the side of the positioning plate, first clamping parts are respectively fixedly arranged vertically. The first clamping part includes a first fixing frame, a first driving part, and a first movable protrusion. The middle part of the first fixing frame is provided with a cavity structure that penetrates up and down. The first driving part is used to drive a first connecting rod part in the cavity of the first fixing frame to move up and down, and simultaneously realize the deflection movement of the first movable protrusion connected to the bottom of the first connecting rod part towards the inside.

[0009] The second clamping part is located inside the first clamping part and is connected to the bottom of the positioning plate through a sliding part, so that the first clamping part and the second clamping part at each side angle position form a clamping body; the distance between the first clamping part and the second clamping part on the same clamping body is adjusted through the sliding part, and the clamping body is used to clamp the part to be clamped.

[0010] The second clamping members located on both sides of the positioning plate are provided with adjusting members in the middle to realize the adjustment of the relative distance between the second clamping members on both sides.

[0011] Furthermore, feet protrude outwards from the four surrounding sides where the positioning plate is located, and the positioning plate is independently and fixedly connected to the first clamping member through the feet.

[0012] Furthermore, the upper end of the first movable protrusion of the first clamping member is connected to the bottom of the side wall of the middle cavity of the fixed frame through a hinge member.

[0013] Furthermore, a limiting component is arranged on the side where the first fixed frame is located, and the limiting component is used to limit the movement stroke of the first connecting rod member located inside the middle cavity in the vertical direction.

[0014] Furthermore, the second clamping member adopts the same structural members as the first clamping member, including a second fixed frame, a second driving member, and a second movable protrusion. A middle cavity structure that penetrates up and down is arranged in the middle of the second fixed frame, and a second connecting rod member penetrates up and down in the middle cavity structure. The second driving member is used to realize the lifting movement of the second connecting rod member, and simultaneously realize the deflection movement of the second movable protrusion connected to the bottom of the second connecting rod member towards the outside, so that the first movable protrusion of the clamping body adjacent to the first clamping member deflects towards the opposite side and cooperates to clamp the object to be clamped.

[0015] Furthermore, two groups of the second clamping members on the same side form an integral body, and the adjusting member synchronously slides the second clamping members on one side along the direction of the sliding member.

[0016] Furthermore, at least two groups of the adjusting members are provided, and the second clamping members located on both sides are independently pushed and slid.

[0017] Furthermore, mounting holes are arranged at the top where the positioning plate is located for assembling and connecting with an external manipulator.

[0018] Advantages of the utility model:

[0019] 1. The mutual cooperation of the first clamping member and the second clamping member adopted by the device can realize the adjustment of the angle size of the included angle of the clamped object, and the sizes in the left and right directions can be relatively adjusted, which can adapt to the clamping of a variety of clamped objects, without the need to frequently replace the clamping members, greatly improving the adaptation scenarios of the entire device and the efficiency of transporting the clamped object.

[0020] 2. The movable protrusions provided on the first clamping member and the second clamping member adopted by the present device can support the clamped object from the bottom, improve the stability during transportation, effectively achieve the transportation effect, and realize clamping at four angles, thereby improving the transportation stability.

[0021] 3. A limiting component is provided on the side of the fixing frame of the clamping member of the present device. The limiting component is used to limit the vertical movement stroke of the first connecting rod member located inside the middle cavity, so as to realize the movement of the connecting rod member within the movement range of the driving member and avoid mechanical damage caused by excessive movement. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art.

[0023] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0024] Figure 2 It is a schematic cross-sectional structure diagram of an embodiment of the present utility model;

[0025] Figure 3 It is a schematic diagram of the positioning plate structure of an embodiment of the present utility model;

[0026] Figure 4 It is a schematic diagram of the first clamping member structure of an embodiment of the present utility model;

[0027] Figure 5 It is a schematic diagram of the second clamping member structure of an embodiment of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the drawings in 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 shall fall within the protection scope of the present utility model.

[0029] As Figure 1 、 Figure 2 shown, an embodiment of the present utility model provides a general-purpose welding clamping device for a lift support arm, including a positioning plate 1, a first clamping member 2, and a second clamping member 3.

[0030] As Figure 3As shown in the figure, the positioning plate 1 is a panel structure. The four sides where the positioning plate 1 is located extend outwards with support feet 101, and are independently and fixedly connected to the first clamping member 2 through the support feet 101. At the same time, mounting holes 102 are provided at the top where the positioning plate 1 is located for assembling and connecting with an external manipulator. This detachable connection method can meet the installation needs of manipulators for different types of work, facilitate maintenance and replacement. After the manipulator is disassembled and assembled, according to the change of the production line, the effective utilization rate of the manipulator is thus improved.

[0031] As Figure 4 shown in the figure, the first clamping members 2 are respectively fixedly arranged vertically on the side edges of the four corners where the positioning plate 1 is located. The first clamping member 2 includes a first fixing frame 21, a first driving member 22 and a first movable protrusion 23. A vertically penetrating middle cavity structure is formed in the middle of the first fixing frame 21, and a vertical first connecting rod member 24 is arranged in the middle cavity structure. The first driving member 22 is used to drive the first connecting rod member 24 in the middle cavity of the first fixing frame 21 and realize the lifting movement of the first connecting rod member 24 in the vertical direction. At this time, the bottom of the first connecting rod member 24 is hinged with the first movable protrusion 23, and the first movable protrusion 23 connected to the bottom of the first connecting rod member 24 is synchronously deflected inward.

[0032] In order to ensure the stable deflection of the first movable protrusion 23 in the middle cavity structure of the first fixing frame 21, the upper end of the first movable protrusion 23 can be connected to the bottom of the side wall of the middle cavity of the fixing frame 21 through a hinge member. Thus, while the first movable protrusion 23 makes a deflection movement, it will not affect the placement of the first movable protrusion 23. That is, when the first connecting rod member 24 is pressed down, a downward pressure on the rear end of the first movable protrusion 23 is formed, and the upper part of the first movable protrusion 23 is hinged, so that the front end of the first movable protrusion 23 is lifted, forming a bottom lock for the workpiece to be clamped.

[0033] At the same time, a limiting component 201 is arranged on the side where the first fixing frame 21 is located, and the limiting component 201 is used to limit the movement stroke of the first connecting rod member 24 in the middle cavity in the vertical direction, so as to realize the movement of the first connecting rod member 24 within the movement range of the first driving member 22 and avoid mechanical damage caused by excessive movement.

[0034] As Figure 5As shown, the second clamping member 3 uses the same structural members as the first clamping member 2, including a second fixing frame 31, a second driving member 32, and a second movable protrusion 33 (having the same structure as the first fixing frame 21, the first driving member 22, and the first movable protrusion 23 on the first clamping member 2). A middle cavity structure penetrating up and down is provided in the middle where the second fixing frame 31 is located, and a second connecting rod member 34 penetrates up and down in the middle cavity structure. The second driving member 32 is used to achieve the lifting movement of the second connecting rod member 34, and simultaneously the second movable protrusion 33 connected to the bottom of the second connecting rod member 34 deflects outward, causing the first movable protrusion 23 of the first clamping member 2 adjacent to the first clamping member 2 in each clamping body (formed by the first clamping member 2 and the second clamping member 3 at each side corner position) to deflect towards the opposite side and cooperate for clamping the item to be clamped. At this time, in order to ensure the stable clamping of the item to be clamped, the bottom of the first movable protrusion 23 of the first clamping member 2 can be kept flush with the bottom of the second movable protrusion 33 of the second clamping member 3, which is convenient for clamping the clamped object.

[0035] The second clamping member 3 as a whole is located inside the first clamping member 2, that is, the first clamping member 2 forms an external wrap around the second clamping member 3, and is connected to the bottom where the positioning plate 1 is located through a sliding member 5. The distance between the first clamping member 2 and the second clamping member 3 on the same clamping body is adjusted through the sliding member 5, that is, each first clamping member 2 and the second clamping member 3 at each side corner position form a clamping body, and the item to be clamped is clamped through the clamping body.

[0036] Two groups of second clamping members 3 on the same side form a whole, and the adjusting member 4 synchronously slides the second clamping members 3 on one side along the direction of the sliding member 5, thereby adjusting the relative gap size between the second clamping member 3 and the first clamping member 2 to meet the clamping of different items to be clamped. The upper end where the first movable protrusion 23 of the first clamping member 2 is located is connected to the bottom of the side wall of the middle cavity of the fixing frame 21 through a hinge member. And at least two groups of adjusting members 4 are provided, and the second clamping members 3 located at both sides are independently pushed and slid respectively. This design method can meet the relative position adjustment when the shapes are different or the outer dimensions are inconsistent, and meet the size requirements of clamping.

[0037] The first clamping member 2 and the second clamping member 3 of the entire device are used in cooperation, which can achieve the angle adjustment of the clamped object, reduce the tediousness of frequently replacing the clamping members, and improve the adaptability of the entire device.

[0038] The above has shown and described the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and all these changes and improvements fall within the scope of the present utility model claimed.

Claims

1. A universal welding clamping device for a lifting machine support arm, comprising a positioning plate (1), a first clamping member (2), and a second clamping member (3), characterized in that: The positioning plate (1) is a panel structure; The four corner sides of the positioning plate (1) are respectively fixedly provided with first clamping members (2) along the vertical direction, the first clamping member (2) comprising a first fixing frame (21), a first driving member (22) and a first movable protrusion (23), the middle part of the first fixing frame (21) being provided with a middle cavity structure penetrating from top to bottom, the first driving member (22) being used to drive the first connecting rod member (24) in the middle cavity of the first fixing frame (21) to realize lifting movement, and simultaneously realize the first movable protrusion (23) connected to the bottom of the first connecting rod member (24) to perform deflection movement inwards; The second clamping member (3) is located on the inner side of the first clamping member (2) and is connected to the bottom of the positioning plate (1) via a slide (5), so that the first clamping member (2) and the second clamping member (3) at each side angle position form a clamping body; the distance between the first clamping member (2) and the second clamping member (3) located on the same clamping body is adjusted by the slide (5), and the clamping body is used to clamp the object to be clamped; The second clamping members (3) located on both sides of the positioning plate (1) are adjusted relative to each other through an adjusting member (4) arranged in the middle.

2. The universal welding clamping device for lift support arm according to claim 1, characterized in that: Support legs (101) extend outwardly from the periphery of the positioning plate (1), and are independently fixedly connected to the first clamping member (2) via the support legs (101).

3. The universal welding clamping device for lift support arm according to claim 1, characterized in that: The upper end portion of the first movable protrusion (23) of the first clamping member (2) is connected to the bottom of the side wall of the cavity in the fixing frame (21) via a hinge.

4. The universal welding clamping device for lift support arm according to claim 1, characterized in that: A limiting component (201) is arranged on the side where the first fixing frame (21) is located, and the limiting component (201) is used to limit the movement stroke of the first connecting rod (24) located inside the middle cavity in the vertical direction.

5. The universal welding clamping device for lift support arm according to claim 1, characterized in that: The second clamping member (3) adopts the same structural member as the first clamping member (2), including a second fixing frame (31), a second driving member (32) and a second movable protrusion (33). A middle cavity structure penetrating from top to bottom is arranged in the middle of the second fixing frame (31), and a second connecting rod member (34) penetrating from top to bottom is arranged in the middle cavity structure. The second driving member (32) is used to realize the lifting movement of the second connecting rod member (34), and the second movable protrusion (33) connected to the bottom of the second connecting rod member (34) is simultaneously realized to deflect outward, so that the first movable protrusion (23) of the clamping body adjacent to the first clamping member (2) is deflected to the opposite side and cooperates, so as to clamp the object to be clamped.

6. The universal welding clamping device for lift support arm according to claim 1, characterized in that: The two groups of the second clamping members (3) located on the same side form a whole, and the adjusting member (4) is synchronously slidably connected to the second clamping members (3) located on one side along the direction of the sliding member (5).

7. The universal welding clamping device for lift support arm according to claim 6, characterized in that: At least two groups of the adjusting members (4) are provided, and independently push and slide the second clamping members (3) located at two side positions.

8. The universal welding clamping device for lift support arm according to claim 1, characterized in that: A mounting hole (102) is provided at the top of the positioning plate (1) for assembly and connection with an external robot.

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