Supporting leg adjusting device

Abstract

The utility model relates to a supporting leg adjusting device which comprises a fixed square box, a movable supporting leg adjusting device, a movable supporting leg adjusting device and a movable supporting leg adjusting device. The movable supporting leg extends out of the opening of the fixed square box; the adjusting roller is arranged at the gap between the movable supporting leg and the fixed square box, is used for supporting and supporting the telescopic movement of the movable supporting leg relative to the fixed square box, and comprises a support provided with a transverse groove for accommodating the roller; the roller comprises a shaft and a rotary drum, the rotary drum is sleeved on the shaft, two ends of the shaft are connected onto the support, and the roller is higher than the support. Sliding friction between the movable supporting leg and the fixed square box is converted into rolling friction, the service life of the roller is effectively prolonged, the movable supporting leg is convenient to install, and the height of the roller is convenient to adjust.

Description

Technical Field

[0001] This utility model relates to the field of wheeled cranes, and in particular to a leg adjustment device. Background Technology

[0002] Wheeled cranes have undergone decades of continuous innovation and development, resulting in significant improvements in their operation, lifting performance, and user-friendly design. To meet user needs, future technological advancements will further enhance the lightweight and convenience of cranes, as well as extend their service life. This necessitates a more rational structural design for each crane component, reducing unnecessary structures and wear, and achieving greater lifting capacity with a lighter, more efficient structure.

[0003] In existing wheeled crane products, the movable outriggers experience sliding friction with the support sliders of the fixed square box during extension and retraction. The support sliders are located on the edge of the lower cover plate and below the upper cover plate of the fixed square box, and their height can be adjusted using adjusting nuts. However, sliding friction not only increases the difficulty of installation but also increases energy consumption and accelerates component damage. Furthermore, adjusting or replacing the support sliders fixed inside the fixed square box is extremely inconvenient.

[0004] Therefore, designing a reasonable outrigger adjustment structure to effectively reduce wear and inconvenience caused by friction, improve the convenience of outrigger adjustment and enhance working performance is of practical significance. Summary of the Invention

[0005] The purpose of this invention is to provide a support leg adjustment device that converts the sliding friction between the movable support leg and the fixed square box into rolling friction, effectively extending the service life of the roller, and facilitating the installation of the movable support leg and the adjustment of the roller height.

[0006] To achieve the above technical objectives, this utility model adopts the following technical solution: a support leg adjustment device, comprising:

[0007] The fixed box has an internal cavity to accommodate the movable support legs, and an opening on one side;

[0008] Movable support legs extend from the opening of the fixed square box;

[0009] Adjustable rollers, positioned in the gap between the movable outrigger and the fixed square box, are used to support and facilitate the telescopic movement of the movable outrigger relative to the fixed square box, including:

[0010] The support is provided with a transverse groove to accommodate the roller;

[0011] A roller includes a shaft and a roller, the roller being fitted onto the shaft, both ends of the shaft being connected to the support, and the roller extending above the support.

[0012] Furthermore, the support includes a fixed support and a movable support. The movable support is placed in the groove of the fixed support and can slide freely up and down. The movable support is provided with a groove to match the roller.

[0013] Furthermore, the bottom of the fixed support has a threaded through hole for connecting an adjusting bolt.

[0014] Furthermore, the adjusting bolt is provided with a nut.

[0015] Furthermore, the shaft has square structures with rounded corners at both ends, which are placed on the shaft seat of the matching movable support.

[0016] Furthermore, it also includes clamps that match both ends of the shaft, and the two ends of the clamps are fixed to the movable support by bolts.

[0017] Furthermore, the adjusting rollers are located on the inner side of the upper cover plate of the movable support leg and on the outer side of the lower cover plate of the fixed square box.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0019] First, this utility model is equipped with an adjusting roller, which converts the sliding friction between the movable support leg and the fixed square box into rolling friction, effectively extending the service life of the roller.

[0020] Secondly, the movable support of this utility model is placed in the groove of the fixed support and can slide freely up and down. The bottom of the fixed support has a threaded through hole for connecting the adjusting bolt, which facilitates the adjustment of the height of the roller.

[0021] Third, this utility model installs the upper adjusting roller on the movable support leg, which facilitates the adjustment or replacement of the adjusting roller and other structures from the other side of the fixed box; the fixed position and style of the adjusting roller can be flexibly changed as needed, which is beneficial to the lightweight design of the movable support leg. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0023] Figure 2 A schematic diagram of the three-dimensional structure for adjusting the rollers;

[0024] Figure 3 A cross-sectional diagram of the adjusting roller;

[0025] Figure 4 Exploded view of the parts for adjusting the rollers;

[0026] Figure 5 A schematic diagram showing the adjustment rollers mounted on the movable support leg;

[0027] Figure 6 This is a schematic diagram showing the adjustment rollers mounted on a fixed square box.

[0028] Among them, 1 is a fixed square box, 2 is a movable support leg, 3 is an adjusting roller, 3-1 is a fixed support, 3-2 is a movable support, 3-3 is a roller, 3-4 is a shaft, 3-5 is a hoop, 3-6 is an adjusting bolt, and 3-7 is a nut. Detailed Implementation

[0029] like Figure 1 As shown, a type of outrigger adjustment device includes: a fixed square box 1 with a cavity inside for accommodating a movable outrigger 2 and an opening on one side; the movable outrigger 2 extending out from the opening of the fixed square box 1; and an adjusting roller 3 disposed in the gap between the movable outrigger 2 and the fixed square box 1 for supporting and assisting the telescopic movement of the movable outrigger 2 relative to the fixed square box 1.

[0030] like Figures 2 to 4 As shown, the adjusting roller 3 includes: a fixed support 3-1 and a movable support 3-2. The movable support 3-2 is placed in the groove of the fixed support 3-1 and can slide freely up and down. The movable support 3-2 is provided with a groove to match the roller. The roller includes a shaft 3-4 and a roller 3-3. The roller 3-3 is fitted on the shaft 3-4. Both ends of the shaft 3-4 are connected to the support. The roller is higher than the support.

[0031] The fixed support 3-1 has a threaded through hole at its bottom, through which an adjusting bolt 3-6 is connected. The adjusting bolt 3-6 is fitted with a nut 3-7.

[0032] Shaft 3-4 has a square structure with rounded corners at both ends and is placed on the shaft seat of the matching movable support 3-2. Hoop 3-5 matches both ends of shaft 3-4 and is fixed to the movable support 3-2 by bolts at both ends.

[0033] like Figure 5 and Figure 6 As shown, one adjusting roller 3 is set on the inner side of the cover plate of the movable support leg 2, and two adjusting rollers 3 are symmetrically set on the outer side of the lower cover plate of the fixed square box 1.

[0034] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the scope of the present utility model. Various modifications and improvements made by those skilled in the art to the technical solution of the present utility model without departing from the design principle of the present utility model should be included within the protection scope defined by the claims of the present utility model.

Claims

1. A leg adjustment device, comprising: The fixed square box (1) has an internal cavity for accommodating the movable support leg (2) and an opening on one side; Movable support leg (2) extends out from the opening of fixed square box (1); Its characteristic is that it further includes: Adjusting rollers (3), located in the gap between the movable support leg (2) and the fixed square box (1), are used to support and facilitate the telescopic movement of the movable support leg (2) relative to the fixed square box (1), including: The support is provided with a transverse groove to accommodate the roller; The roller includes a shaft (3-4) and a roller (3-3), the roller (3-3) being mounted on the shaft (3-4), both ends of the shaft (3-4) being connected to the support, and the roller being higher than the support.

2. The outrigger adjustment device according to claim 1, characterized in that, The support includes a fixed support (3-1) and a movable support (3-2). The movable support (3-2) is placed in the groove of the fixed support (3-1) and can slide freely up and down. The movable support (3-2) is provided with a groove to match the roller.

3. The outrigger adjustment device according to claim 2, characterized in that, The fixed support (3-1) has a threaded through hole at the bottom for connecting the adjusting bolt (3-6).

4. The outrigger adjustment device according to claim 3, characterized in that, The adjusting bolt (3-6) is provided with a nut (3-7).

5. The outrigger adjustment device according to claim 2, characterized in that, The shaft (3-4) has a square structure with rounded corners at both ends and is placed on the shaft seat of the matching movable support (3-2).

6. The outrigger adjustment device according to claim 5, characterized in that, It also includes a clamp (3-5) that matches both ends of the shaft (3-4), and both ends of the clamp (3-5) are fixed to the movable support (3-2) by bolts.

7. The outrigger adjustment device according to claim 1, characterized in that, The adjusting roller (3) is located on the inside of the upper cover plate of the movable support leg (2) and on the outside of the lower cover plate of the fixed square box (1).

Images