Vehicle body leveling leg transverse unfolding mechanism based on rolling mechanism

Abstract

The utility model relates to a rolling mechanism-based vehicle body leveling leg transverse unfolding mechanism, which comprises a rolling mechanism (1), a leveling leg unfolding arm (2), a leveling leg supporting cavity (3), a leveling leg (4) and a pushing hydraulic cylinder (5), the rolling mechanism (1) is arranged at the outer end of the leveling leg supporting cavity (3), and the uppermost edge of the rolling mechanism (1) is higher than the inner bottom surface of the leveling leg supporting cavity (3) by (1) mm; the leveling leg unfolding arm (2) is installed in the leveling leg supporting cavity (3), the lower surface of the leveling leg unfolding arm (2) makes contact with the rolling mechanism (1), the pushing hydraulic cylinder (5) is connected between the leveling leg supporting cavity (3) and the leveling leg unfolding arm (2), and the leveling leg unfolding arm (2) is fixedly connected to the leveling leg (4). The rolling mechanism (1) comprises a fixed shaft (8), two ball bearings (6) and a roller (7), the fixed shaft (8) is fixedly connected with the two side walls of the leveling leg supporting cavity (3), and the ball bearings (6) and the roller (7) are installed on the fixed shaft (8). According to the utility model, the friction force during the movement of the unfolded leveling leg arm is effectively reduced, and the unfolding and folding processes of the unfolding arm of the leveling leg can be easily realized, so that the requirement of increasing the working span of the leveling leg is met.

Description

Technical Field

[0001] This utility model belongs to the field of mechanical design, specifically relating to a vehicle body leveling leg lateral unfolding mechanism based on a rolling mechanism. Background Technology

[0002] Based on the environmental operating conditions of military equipment, the operational stability of large military equipment under high-speed wind loads is a pressing issue that needs to be addressed. Currently, large military equipment has a relatively large deployed size and working height, resulting in a correspondingly larger windward area. Consequently, the wind load and wind moment experienced by the equipment increase simultaneously during operation. Therefore, to ensure the operational stability of the equipment and enable its normal and safe operation, the design value of the stability safety factor is generally greater than 2. The stability safety factor is the ratio of the equipment's anti-overturning moment to the wind moment it experiences. The magnitude of the anti-overturning moment depends on the equipment's weight and the lateral span of its leveling legs, while the wind moment depends on the equipment's windward area and the wind speed. Therefore, increasing the working span of the leveling legs is the most effective measure to improve the operational stability of the equipment. Utility Model Content

[0003] The purpose of this invention is to propose a vehicle body leveling leg lateral deployment mechanism based on a rolling mechanism, which reduces the frictional force of the leveling leg deployment arm when it moves within the leveling leg support cavity, and can easily and quickly realize the deployment and retraction of the deployment arm within the support cavity.

[0004] This utility model is achieved through the following technical solution:

[0005] A vehicle body leveling leg lateral deployment mechanism based on a rolling mechanism includes a rolling mechanism 1, a leveling leg deployment arm 2, a leveling leg support cavity 3, a leveling leg 4, and a pushing hydraulic cylinder 5. The rolling mechanism 1 is installed at the outer end of the leveling leg support cavity 3, with its uppermost edge 1mm higher than the inner bottom surface of the leveling leg support cavity 3. The leveling leg deployment arm 2 is installed inside the leveling leg support cavity 3, with its lower surface in contact with the rolling mechanism 1. The pushing hydraulic cylinder 5 is connected between the leveling leg support cavity 3 and the leveling leg deployment arm 2. The leveling leg deployment arm 2 is fixedly connected to the leveling leg 4.

[0006] The rolling mechanism 1 includes a fixed shaft 8, two ball bearings 6 and a roller 7. The fixed shaft 8 is fixedly connected to the two side walls of the leveling leg support cavity 3. The two ball bearings 6 are installed at both ends of the fixed shaft 8, and the roller 7 is installed on the fixed shaft 8 between the two ball bearings 6. The ball bearings 6 and the roller 7 can rotate and roll on the fixed shaft 8 at the same time.

[0007] This invention effectively reduces the friction force during the movement of the leveling leg arm, and can easily realize the unfolding and retraction process of the leveling leg arm, thereby significantly increasing the working span of the leveling leg. Attached Figure Description

[0008] Figure 1(a) is a schematic diagram of the retracted state structure of the lateral deployment mechanism of the vehicle body leveling leg based on the rolling mechanism.

[0009] Figure 1(b) is a schematic diagram of the unfolded state structure of the vehicle body leveling leg lateral unfolding mechanism based on the rolling mechanism;

[0010] Figure 1(c) and Figure 1(d) are schematic diagrams of the rolling mechanism, respectively.

[0011] Figure 1(e) is a schematic diagram of the equipment working after the leveling leg is horizontally deployed. Detailed Implementation

[0012] Referring to the above figures, a detailed description of the vehicle body leveling leg lateral unfolding mechanism based on a rolling mechanism of this utility model will be provided.

[0013] Referring to Figures 1(a) and 1(b), the design of the vehicle body leveling leg lateral unfolding mechanism based on the rolling mechanism of this utility model consists of a rolling mechanism 1, a leveling leg unfolding arm 2, a leveling leg support cavity 3, a leveling leg 4, and a pushing hydraulic cylinder 5; referring to Figures 1(c) and 1(d), the rolling mechanism consists of a fixed shaft 8, two ball bearings 6, and rollers 7.

[0014] A rolling mechanism 1 is installed at the outer end of the leveling leg support cavity 3. The fixed shaft 8 of the rolling mechanism 1 is fixedly connected to the two side walls of the leveling leg support cavity 3. Two ball bearings 6 are installed on the fixed shaft 8, and rollers 7 are also installed on the fixed shaft 8. Between the two ball bearings 6, the ball bearings 6 and the rollers 7 can rotate and roll simultaneously on the fixed shaft 8.

[0015] After installing the rolling mechanism 1, the uppermost edge of the rolling mechanism 1 should be 1mm higher than the bottom surface of the leveling leg support cavity 3. When the leveling leg unfolding arm 2 is inserted into the leveling leg support cavity 3, the lower surface of the outer end of the leveling leg unfolding arm 2 contacts the rolling mechanism 1, and the lower surface of the inner end of the leveling leg unfolding arm 2 contacts the bottom surface of the leveling leg support cavity 3. When the hydraulic cylinder 5 pushes the leveling leg unfolding arm 2 to unfold or retract within the leveling leg support cavity 3, the leveling leg unfolding arm 2 rolls on the rolling mechanism 1. The rolling mechanism 1 changes the friction between the leveling leg unfolding arm 2 and the leveling leg support cavity 3 from sliding friction to rolling friction, reducing the frictional force when the leveling leg unfolding arm 2 moves. This allows for easy and quick unfolding and retraction of the leveling leg unfolding arm 2, and reduces the pushing force of the hydraulic cylinder 5.

[0016] Referring to Figure 1(e), after the leveling leg extension arm 2 is extended laterally, the span on one side of the leveling leg can be increased by 400mm, and the total span of the leveling leg can be increased from 2200mm to 3000mm, which essentially increases the operational stability and safety factor of the equipment. This structural design can also be applied to similar weapons and equipment.

[0017] This utility model, based on a rolling mechanism, designs a lateral deployment mechanism for the vehicle's leveling legs. This mechanism is applied to the fire distribution vehicle of a certain type of air defense missile weapon system. The usage process is as follows: a. First, the hydraulic system of the fire distribution vehicle is started. The hydraulic control system detects whether the lateral deployment arm of the leveling leg has been retracted into place; b. When the ambient wind speed is high, the hydraulic cylinder is pushed to push the lateral deployment arm of the leveling leg into place; c. The leveling leg extends to complete the leveling function of the fire distribution vehicle; d. When the working environment is good, the lateral deployment arm does not need to be extended; simply extending the leveling leg is sufficient to complete the leveling function of the fire distribution vehicle.

Claims

1. A vehicle body leveling leg lateral deployment mechanism based on a rolling mechanism, characterized in that: It includes a rolling mechanism (1), a leveling leg unfolding arm (2), a leveling leg support cavity (3), a leveling leg (4), and a pushing hydraulic cylinder (5). The rolling mechanism (1) is installed at the outer end of the leveling leg support cavity (3), with its uppermost edge higher than the inner bottom surface of the leveling leg support cavity (3). The leveling leg unfolding arm (2) is installed inside the leveling leg support cavity (3), with its lower surface in contact with the rolling mechanism (1). The pushing hydraulic cylinder (5) is connected between the leveling leg support cavity (3) and the leveling leg unfolding arm (2). The leveling leg unfolding arm (2) is fixedly connected to the leveling leg (4).

2. The vehicle body leveling leg lateral deployment mechanism based on a rolling mechanism according to claim 1, characterized in that: The rolling mechanism (1) includes a fixed shaft (8), two ball bearings (6) and a roller (7). The fixed shaft (8) is fixedly connected to the two side walls of the leveling leg support cavity (3). The two ball bearings (6) are installed at both ends of the fixed shaft (8), and the roller (7) is installed on the fixed shaft (8) between the two ball bearings (6). The ball bearings (6) and the roller (7) can rotate and roll on the fixed shaft (8) at the same time.

3. The vehicle body leveling leg lateral deployment mechanism based on a rolling mechanism according to claim 1, characterized in that: The uppermost edge of the rolling mechanism (1) is 1mm higher than the inner bottom surface of the leveling leg support cavity (3).

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