Sliding displacement mechanism for balance weight

Abstract

The utility model discloses a sliding displacement mechanism for a balance weight. The sliding displacement mechanism comprises a sliding rail device and a sliding block device, the sliding rail device comprises a sliding rail, a first fixing structure and a supporting body, the supporting body is of an L-shaped structure, the sliding rail is located on the supporting body, and the supporting body and the hanging support are of an integrated structure; the sliding block device comprises a sliding block, a second fixing structure and a hollow shaft, and the hollow shaft is connected with the sliding block through the second fixing structure. According to the novel sliding rail device and the novel sliding block device with the anti-shearing function, the stress direction of a sliding rail and sliding block fixing structure is reduced by changing the structural force transmission mechanism, and the overall reliability of a sliding displacement mechanism is improved.

Description

Technical Field

[0001] The utility model relates to the field of counterweights, in particular to a sliding displacement mechanism for counterweights. Background Art

[0002] Crane: A multi-action machine capable of vertically lifting and horizontally transporting heavy objects within a certain range. Counterweight: Suspended at the rear of the turntable, it primarily counterbalances the tipping moment generated by the crane's lifting, maintaining overall stability. Turning radius: The distance between the counterweight's farthest point and the turntable's axis of rotation. Sliding joint: A kinematic joint in which the two components can only move relative to each other in a single direction, possessing only a single degree of freedom, translation.

[0003] The sliding displacement mechanism used in cranes not only changes the counterweight's slewing radius and adjusts its center of gravity, maximizing the crane's lifting performance, but also makes the crane's overall structure more compact, thereby improving its ability to operate in confined spaces. This mechanism achieves this function through a sliding pair consisting of a rail and a slider assembly. Therefore, the reliability of the rail and slider assembly is a key research topic. Failure of the rail and slider assembly can severely limit the crane's displacement capabilities, leading to customer complaints.

[0004] Existing technologies include the rotary swinging counterweight US1507863 and the sliding counterweight CN116143002A. The sliding displacement mechanism includes a slide rail device, a slider device, a hanging bracket and a slide. The slide rail of the existing slide rail device is assembled on the hanging bracket through a fixed structure. When the slide rail device is subjected to a vertical load, the fixed structure of the fixed slide rail is easily sheared and fails due to the shear force, causing the slide rail to fall off, and eventually causing the slide rail device to lose its guiding function. The slider of the existing slider device is designed in the U-shaped groove of the slide, and the slider is assembled on the slide through a fixed structure. When the slider device reciprocates on the slide rail device, the friction of the slide rail on the slider generates a horizontal shear force, and the reliability of the fixed structure of the fixed slider decreases under the cyclic shear force.

[0005] Therefore, it is necessary to develop a new type of sliding displacement mechanism for balanced heavy vehicles to improve reliability. Utility Model Content

[0006] Purpose of the utility model: In view of the shortcomings and defects of the existing technology, the utility model provides a sliding displacement mechanism for balancing and reusing, designs a new slide rail device and slider device with anti-shear function, and reduces the force direction of the slide rail slider fixed structure by changing the structural force transmission mechanism, thereby improving the overall reliability of the sliding displacement mechanism.

[0007] Technical solution: The utility model is a sliding displacement mechanism for a balancing weight, which is characterized in that it includes a slide rail device and a slider device; the slide rail device includes a slide rail, a first fixed structure and a support body, the support body is an L-shaped structure, the slide rail is located on the support body, and the support body and the hanging bracket are an integrated structure; the slider device includes a slider, a second fixed structure and a hollow shaft, and the hollow shaft is connected to the slider through the second fixed structure.

[0008] Wherein, the slide rail device is fixedly connected to the hanging bracket.

[0009] Wherein, the support body of the slide rail device is fixedly connected to the hanging bracket through a welding structure.

[0010] Wherein, the slider device is fixedly connected to the slide.

[0011] Wherein, the hollow shaft is fixedly connected to the slider and the carriage via a second fixing structure.

[0012] Wherein, the slide rail device and the slider device are located on the sliding displacement mechanism for balancing weight.

[0013] Beneficial effects: Compared with the existing technology, the utility model has the following significant advantages: the utility model designs a new slide rail device and slider device with anti-shear function, which reduces the force direction of the slide rail slider fixing structure by changing the structural force transmission mechanism, thereby improving the overall reliability of the sliding displacement mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a structural diagram of the sliding displacement mechanism for balancing;

[0015] Figure 2 It is a structural schematic diagram of a slide rail device in the prior art;

[0016] Figure 3 It is a structural schematic diagram of a slider device in the prior art;

[0017] Figure 4 This is a schematic structural diagram of the slide rail device of the present invention;

[0018] Figure 5 This is a schematic structural diagram of the slider device of the present utility model;

[0019] In the figure, 1 is a slide rail device; 11 is a slide rail; 12 is a first fixed structure; 13 is a support body; 2 is a slider device; 21 is a slider; 22 is a second fixed structure; 23 is a hollow shaft; 3 is a hanging bracket; and 4 is a slide. DETAILED DESCRIPTION

[0020] The technical solution of the present utility model is further described below in conjunction with the accompanying drawings and specific implementation methods.

[0021] The sliding displacement mechanism for balancing weight of the present invention includes a slide rail device 1 and a slider device 2; the slide rail device 1 includes a slide rail 11, a first fixed structure 12 and a support body 13, the support body 13 is an L-shaped structure, the slide rail 11 is located on the support body 13, and the support body 13 and the hanging bracket 3 are an integrated structure; the slider device 2 includes a slider 21, a second fixed structure 22 and a hollow shaft 23, and the hollow shaft 23 is connected to the slider 21 through the second fixed structure 22.

[0022] The slide rail assembly 1 is fixedly connected to the mounting bracket 3. The support body 13 of the slide rail assembly 1 is fixedly connected to the mounting bracket 3 via a welded structure. The slider assembly 2 is fixedly connected to the carriage 4. The hollow shaft 23 is fixedly connected to the slider 21 and carriage 4 via a second fixing structure 22. The slide rail assembly 1 and slider assembly 2 are located on a counterweight sliding displacement mechanism.

[0023] like Figure 4 The support body 13 is designed with an L-shaped structure, on which the slide rail 11 is placed. The support body 13 is welded to the mounting bracket 3 to form a single body. When the new slide rail assembly 1 is subjected to vertical force, the support of the support body 13 protects the first fixing structure 12 from shear force, thereby increasing the reliability of the slide rail assembly 1.

[0024] like Figure 5 The new slider device 2 includes a slider 21, a second fixing structure 22, and a hollow shaft 23. When the new slider device 2 is subjected to horizontal friction, the hollow shaft 23 bears the horizontal shear force. The second fixing structure 22 only plays an axial fixing role. The hollow shaft 23 enhances the reliability of the slider device 2.

[0025] To sum up, the support body 13 in the new slide rail device 1 with anti-shear function supports the first fixed structure 12, so that the first fixed structure 12 is not subjected to shear force; the addition of the hollow shaft 23 reduces the shear force acting on the second fixed structure 22, thereby improving the reliability of the slider device 2. The two enhance the reliability of the sliding displacement mechanism by changing the force mode of the structure.

Claims

1. A sliding displacement mechanism for a counterweight, characterized by: The invention comprises a slide rail device (1) and a slider device (2); the slide rail device (1) comprises a slide rail (11), a first fixed structure (12) and a support body (13); the support body (13) is an L-shaped structure; the slide rail (11) is located on the support body (13); the support body (13) and the hanging bracket (3) are an integrated structure; the slider device (2) comprises a slider (21), a second fixed structure (22) and a hollow shaft (23); the hollow shaft (23) is connected to the slide rail (21) through the second fixed structure (22).

2. The sliding displacement mechanism for a balancing weight according to claim 1, characterized in that: The slide rail device (1) is fixedly connected to the hanging bracket (3).

3. The sliding displacement mechanism for a balancing weight according to claim 2, characterized in that: The support body (13) of the slide rail device (1) is fixedly connected to the hanging bracket (3) via a welding structure.

4. The sliding displacement mechanism for a balancing weight according to claim 1, characterized in that: The slider device (2) is fixedly connected to the slide frame (4).

5. The sliding displacement mechanism for a balancing weight according to claim 4, characterized in that: The hollow shaft (23) is fixedly connected to the slider (21) and the carriage (4) via a second fixing structure (22).

6. The sliding displacement mechanism for a balancing weight according to any one of claims 1 to 5, characterized in that: The slide rail device (1) and the slider device (2) are located on a sliding displacement mechanism for balancing weights.

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