An eccentric wheel clamping mechanism

Abstract

This utility model discloses an eccentric wheel clamping mechanism, relating to the field of engineering machinery technology. It includes a base, a clamping arm, and a control device. The lower end of the clamping arm is hinged to the base via a first rotating shaft. A spring is provided on the base, abutting the right side of the clamping arm and applying a leftward elastic force to the clamping arm. The control device includes an eccentric wheel, which is hinged to the base via a second rotating shaft, and the rolling surface of the eccentric wheel abuts the left side of the clamping arm, applying a rightward thrust to the clamping arm. This utility model is suitable for batch processing and is mainly used in tooling for engineering machinery, enabling clamping and positioning of medium-thick plates during welding. The clamping structure is stable, ensuring the welding accuracy of parts.

Description

Technical Field

[0001] This utility model relates to the field of engineering machinery technology, specifically an eccentric wheel clamping mechanism. Background Technology

[0002] Currently, the clamping mechanisms used in construction machinery are bulky and take up a lot of space. At the same time, the deformation of parts after the tooling of construction machinery is completed is large, and conventional clamping is prone to failure, resulting in insufficient welding accuracy of parts. Utility Model Content

[0003] To address the shortcomings of existing technologies, the purpose of this utility model is to provide an eccentric wheel clamping mechanism. The eccentric wheel structure allows the entire eccentric wheel to move in an elliptical motion during clamping, and it will not open when force is applied in the opposite direction, remaining in a dead-point state.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: an eccentric wheel clamping mechanism, including a base, a clamping arm, and a control device; the lower end of the clamping arm is hinged to the base via a first rotating shaft; a spring is provided on the base, which abuts against the right side of the clamping arm and applies a leftward elastic force to the clamping arm; the control device includes an eccentric wheel, which is hinged to the base via a second rotating shaft, and the rolling surface of the eccentric wheel abuts against the left side of the clamping arm and applies a rightward thrust to the clamping arm.

[0005] A further improvement is that the base has a U-shaped structure, including a horizontal section, a left vertical section, and a right vertical section.

[0006] A further improvement is that a first connecting clamp for mounting the first rotating shaft is provided on the horizontal section; and a base plate is provided at the bottom of the horizontal section.

[0007] A further improvement is that a second connecting clamp for mounting the second rotating shaft is provided on the left vertical section.

[0008] A further improvement is that a locating pin for installing a spring is provided on the left side of the right vertical section.

[0009] A further improvement is that a limit block is provided on the left side of the right vertical section, and an anti-collision block adapted to the limit block is provided on the right side of the clamping arm.

[0010] A further improvement is that the clamping arm includes a body, the upper left end of the body is provided with a first clearance notch, and the lower right end of the body is provided with a second clearance notch.

[0011] A further improvement is that a limiting plate is embedded at the position where the left side of the clamping arm contacts the eccentric wheel.

[0012] A further improvement is that a pressure block is provided at the upper right end of the clamping arm.

[0013] A further improvement is that the control device also includes a handle, the rolling surface of the eccentric wheel is provided with a connecting hole, and one end of the handle is installed in the connecting hole through a connector.

[0014] The beneficial effects of this utility model are as follows: This utility model can be used for batch processing and is mainly used for tooling in engineering machinery to achieve clamping and positioning of medium and thick plates for welding. The clamping structure is stable and ensures the welding accuracy of parts. Attached Figure Description

[0015] Figure 1 This is a perspective view of the eccentric wheel clamping mechanism in an embodiment of this utility model; Figure 2 This is a front view of the eccentric wheel clamping mechanism in an embodiment of this utility model; Figure 3 This is a side view of the eccentric wheel clamping mechanism in an embodiment of the present invention; Figure 4 This is a top view of the eccentric wheel clamping mechanism in an embodiment of this utility model; Figure 5 This is a schematic diagram of the base structure in an embodiment of the present utility model; Figure 6 This is a schematic diagram of the clamping arm in an embodiment of the present invention; Figure 7 This is a schematic diagram of the control device in an embodiment of the present invention.

[0016] Figure label: 1-Base; 11-Horizontal section; 12-First connecting plate; 13-Left vertical section; 14-Second connecting plate; 15-Right vertical section; 16-Positioning pin; 17-Spring; 18-Limiting block; 19-Base plate; 2-Clamping arm; 21-Body; 22-First pivot; 23-Limiting plate; 24-Pressure block; 25-Anti-collision block; 26-First clearance notch; 27-Second clearance notch; 3-Control device; 31-Eccentric wheel; 32-Second rotating shaft; 33-Connecting hole; 34-Handle; 35-Connector. Detailed Implementation

[0017] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout.

[0018] In the description of this utility model, it should be noted that the directional terms such as "center", "horizontal (X)", "longitudinal (Y)", "vertical (Z)", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. They should not be construed as limiting the specific protection scope of this utility model.

[0019] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features. Thus, the use of "first" and "second" to define a feature may explicitly or implicitly include one or more of that feature. In the description of this utility model, "several" or "a number" means two or more, unless otherwise explicitly specified.

[0020] The following description, in conjunction with the accompanying drawings, further illustrates specific embodiments of the present invention, making the technical solution and beneficial effects of the present invention clearer and more explicit. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

[0021] See Figures 1-4 As shown, this utility model embodiment provides an eccentric wheel clamping mechanism, including a base 1, a clamping arm 2, and a control device 3.

[0022] See Figure 6 As shown, the lower end of the clamping arm 2 is hinged to the base 1 via a first pivot 22. Specifically, the clamping arm 2 includes a body 21, with a first clearance notch 26 on the upper left side and a second clearance notch 27 on the lower right side. A limiting plate 23 is embedded at the position where the clamping arm 2 contacts the eccentric wheel 31 on its left side. A pressure block 24 is provided at the upper right side of the clamping arm 2.

[0023] See Figure 5As shown, a spring 17 is provided on the base 1, which abuts against the right side of the clamping arm 2 and applies a leftward elastic force to the clamping arm 2. Specifically, the base 1 has a U-shaped structure, including a horizontal section 11, a left vertical section 13, and a right vertical section 15. A first connecting clamping plate 12 for mounting the first rotating shaft 22 is provided on the horizontal section 11; a base plate 19 is provided at the bottom of the horizontal section 11. A second connecting clamping plate 14 for mounting the second rotating shaft 32 is provided on the left vertical section 13. A positioning pin 16 for mounting the spring 17 is provided on the left side of the right vertical section 15. A limit block 18 is provided on the left side of the right vertical section 15, and an anti-collision block 25 adapted to the limit block 18 is provided on the right side of the clamping arm 2.

[0024] See Figure 7 As shown, the control device 3 includes an eccentric wheel 31, which is hinged to the base 1 via a second rotating shaft 32. The rolling surface of the eccentric wheel 31 abuts against the left side of the clamping arm 2, thereby applying a rightward thrust to the clamping arm 2. Specifically, the control device 3 also includes a handle 34. The rolling surface of the eccentric wheel 31 is provided with a connecting hole 33, and one end of the handle 34 is installed in the connecting hole 33 via a connector 35.

[0025] The working principle of this utility model is as follows: When the handle is operated, the eccentric wheel moves in an elliptical motion around the second axis, constantly in point-to-point contact with the limit plate, which is mounted on the clamping arm. As the eccentric wheel moves, the clamping arm rotates around the first axis, and the limit block blocks the movement of the clamping arm. When the rotating wheel reaches its maximum radius, it is in the locked position, at which point the clamping arm also reaches its clamping dead point. When opening, the spring acts directly on the clamping arm, allowing for quick opening.

[0026] In the description of this specification, references to terms such as "an embodiment," "preferred," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this utility model. Illustrative expressions of the above terms in this specification do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0027] Based on the above description of the structure and principle, those skilled in the art should understand that this utility model is not limited to the specific embodiments described above. Improvements and substitutions based on this utility model using techniques known in the art all fall within the protection scope of this utility model and should be defined by the claims.

Claims

1. An eccentric clamping mechanism comprising a base (1), characterized in that: It also includes a clamping arm (2) and a control device (3); The lower end of the clamping arm (2) is hinged to the base (1) via the first pivot (22); A spring (17) is provided on the base (1), which abuts against the right side of the clamping arm (2) and is used to apply a leftward elastic force to the clamping arm (2); The control device (3) includes an eccentric wheel (31), which is hinged to the base (1) via a second rotating shaft (32), and the rolling surface of the eccentric wheel (31) abuts against the left side of the clamping arm (2) to apply a rightward thrust to the clamping arm (2).

2. The eccentric wheel clamping mechanism according to claim 1, characterized in that: The base (1) has a U-shaped structure, including a horizontal section (11), a left vertical section (13) and a right vertical section (15).

3. The eccentric wheel clamping mechanism according to claim 2, characterized in that: The horizontal section (11) is provided with a first connecting clamp (12) for mounting the first rotating shaft (22); the bottom of the horizontal section (11) is provided with a base plate (19).

4. The eccentric wheel clamping mechanism according to claim 2, characterized in that: The left vertical section (13) is provided with a second connecting clamp (14) for installing the second rotating shaft (32).

5. The eccentric wheel clamping mechanism according to claim 2, characterized in that: A locating pin (16) for installing a spring (17) is provided on the left side of the right vertical section (15).

6. The eccentric wheel clamping mechanism according to claim 2, characterized in that: A limit block (18) is provided on the left side of the right vertical section (15), and an anti-collision block (25) adapted to the limit block (18) is provided on the right side of the clamping arm (2).

7. The eccentric wheel clamping mechanism according to claim 1, characterized in that: The clamping arm (2) includes a body (21), with a first clearance notch (26) provided on the upper left side of the body (21) and a second clearance notch (27) provided on the lower right side of the body (21).

8. The eccentric wheel clamping mechanism according to claim 1, characterized in that: A limiting plate (23) is embedded at the position where the left side of the clamping arm (2) contacts the eccentric wheel (31).

9. The eccentric wheel clamping mechanism according to claim 1, characterized in that: A pressure block (24) is provided on the upper right side of the clamping arm (2).

10. The eccentric wheel clamping mechanism according to claim 1, characterized in that: The control device (3) also includes a handle (34), and the rolling surface of the eccentric wheel (31) is provided with a connecting hole (33). One end of the handle (34) is installed in the connecting hole (33) through a connector (35).

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