A semi-trailer automatic levelling support device

Abstract

The utility model discloses a kind of automatic leveling support devices of semitrailer, belong to supporting device field, including support block, the side fixed connection of support block has connecting plate, the side fixed connection of connecting plate away from support block has first fixed shaft;Through the first telescopic shaft and second telescopic shaft of being set, and then avoid the bending or fracture of first telescopic shaft and second telescopic shaft due to unilateral excessive stress, by setting the support block bottom support seat and bottom plate, and then semitrailer weight can be evenly transmitted to ground, reduce ground pressure, ensure support stability, and then the reliability of device is improved, through the first limit shaft and second limit shaft of being set, and then can ensure that first telescopic shaft and second telescopic shaft always maintain coaxial degree, avoid offset during telescopic process, the bidirectional guiding structure of fixed part and sliding block, and then it can prevent sliding block from offset when sliding along sliding groove, to improve the security of device.

Description

Technical Field

[0001] This utility model belongs to the field of support device technology, specifically relating to an automatic leveling support device for semi-trailers. Background Technology

[0002] In the field of road freight, semi-trailers are the core equipment for transporting bulk goods. During loading and unloading, maintenance, and temporary parking, they all rely on support devices to ensure stable parking, so as to ensure that the semi-trailers do not tilt or shift during operation, thereby ensuring the safety of goods and operators.

[0003] The existing support device relies on a single telescopic bearing to bear the longitudinal pressure of the semi-trailer. When the semi-trailer's center of gravity shifts due to cargo shift or uneven ground, causing the pressure to concentrate on one side of the telescopic bearing, the telescopic bearing is prone to bending and deformation, and in severe cases, even breakage, which in turn affects the normal operation of the semi-trailer and reduces the safety of the device. Utility Model Content

[0004] The purpose of this utility model is to provide an automatic leveling and support device for semi-trailers to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an automatic leveling support device for a semi-trailer, comprising a support block, a connecting plate fixedly connected to one side of the support block, a first fixed shaft fixedly connected to the side of the connecting plate away from the support block, a limiting plate fixedly connected to the surface of the first fixed shaft, a second fixed shaft fixedly connected to the end of the limiting plate away from the first fixed shaft, a fixing plate fixedly connected to one side of the second fixed shaft, a first telescopic shaft fixedly connected to the bottom of the fixing plate, a second telescopic shaft sleeved on the bottom of the first telescopic shaft, a first fixed ring and a second fixed ring fixedly connected to the surfaces of the first telescopic shaft and the second telescopic shaft respectively, a first limiting shaft fixedly connected to the top of the first fixed ring, a first limiting member movably connected to the surface of the first limiting shaft, a connecting shaft movably connected to the end of the first limiting member away from the first limiting shaft, a second connecting member movably connected to the surface of the connecting shaft, a second limiting shaft movably connected to the end of the second connecting member away from the connecting shaft, and the second limiting shaft fixedly connected to the second fixed ring.

[0006] In a preferred embodiment, a connecting rod is fixedly connected to the bottom of the second telescopic shaft, a pad is provided at the bottom of the connecting rod, one side of the pad is fixedly connected to the connecting plate, a pad block is fixedly connected to the top of the pad, a sliding groove is provided at the top of the pad block, a roller is fixedly connected in the sliding groove, a sliding block is slidably connected in the sliding groove, and the top of the sliding block is fixedly connected to the bottom of the connecting rod.

[0007] In a preferred embodiment, both sides of the pad are fixedly connected to a fixing member, and the top of each fixing member is provided with a sliding groove. A slider is slidably connected in the sliding groove, and the slider is fixedly connected to the sliding block.

[0008] In a preferred embodiment, a support base is fixedly connected to the bottom of the support block, and a base plate is fixedly connected to the bottom of the support base.

[0009] In a preferred embodiment, a connecting block is fixedly connected to the top of the support block, and a load-bearing plate is fixedly connected to the top of the connecting block.

[0010] In a preferred embodiment, the top of the load-bearing plate is provided with a through hole.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] An automatic leveling support device for semi-trailers, by setting a first telescopic shaft and a second telescopic shaft, avoids bending or breakage of the first telescopic shaft and the second telescopic shaft due to excessive force on one side. By setting a support seat and a base plate at the bottom of the support block, the weight of the semi-trailer can be evenly transferred to the ground, reducing ground pressure, ensuring support stability, and thus improving the reliability of the device.

[0013] An automatic leveling support device for semi-trailers, through the setting of a first limiting shaft and a second limiting shaft, can ensure that the first telescopic shaft and the second telescopic shaft always maintain coaxiality, avoiding deviation during the extension and retraction process. The bidirectional guiding structure of the fixing component and the slider can prevent the sliding block from deviating when sliding along the slide groove, thereby effectively reducing the risk of semi-trailer rollover caused by support deviation, and thus improving the safety of the device. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of one side of the overall structure of this utility model;

[0016] Figure 3 This utility model Figure 1 Enlarged structural diagram at point A in the middle;

[0017] Figure 4 This utility model Figure 2 Enlarged structural diagram at point B.

[0018] In the diagram: 1. Support block; 101. Connecting plate; 102. First fixed shaft; 103. Limiting plate; 104. Second fixed shaft; 105. Fixed plate; 106. First telescopic shaft; 107. Second telescopic shaft; 108. First fixing ring; 109. Second fixing ring; 110. First limiting shaft; 111. Connecting shaft; 112. Second limiting shaft; 2. Connecting rod; 201. Pad; 202. Pad block; 203. Roller shaft; 204. Sliding block; 205. Fixing component; 206. Slider; 3. Support base; 301. Base plate; 4. Connecting block; 401. Load-bearing plate. Detailed Implementation

[0019] The present invention will be further described below with reference to the embodiments.

[0020] The following embodiments are used to illustrate the present invention, but should not be used to limit the scope of protection of the present invention. The conditions in the embodiments can be further adjusted according to specific conditions, and simple improvements to the method of the present invention under the premise of the concept of the present invention are all within the scope of protection claimed by the present invention.

[0021] Please see Figure 1-4This utility model provides an automatic leveling support device for a semi-trailer, including a support block 1. A connecting plate 101 is fixedly connected to one side of the support block 1. A first fixed shaft 102 is fixedly connected to the side of the connecting plate 101 away from the support block 1. A limiting plate 103 is fixedly connected to the surface of the first fixed shaft 102. A second fixed shaft 104 is fixedly connected to the end of the limiting plate 103 away from the first fixed shaft 102. A fixing plate 105 is fixedly connected to one side of the second fixed shaft 104. A first telescopic shaft 106 is fixedly connected to the bottom of the fixing plate 105. A second telescopic shaft 106 is sleeved on the bottom of the first telescopic shaft 106. Telescopic shaft 107, first telescopic shaft 106 and second telescopic shaft 107 are respectively fixedly connected to the surfaces of a first fixing ring 108 and a second fixing ring 109. The top of the first fixing ring 108 is fixedly connected to a first limiting shaft 110. The surface of the first limiting shaft 110 is movably connected to a first limiting member. The end of the first limiting member away from the first limiting shaft 110 is movably connected to a connecting shaft 111. The surface of the connecting shaft 111 is movably connected to a second connecting member. The end of the second connecting member away from the connecting shaft 111 is movably connected to a second limiting shaft 112. The second limiting shaft 112 and the second fixing ring 109 are connected to each other. 9. Fixed connection. During operation, the force on the side of the support block 1 is transmitted to the fixed plate 105 through the connecting plate 101 and the limiting plate 103. When height adjustment is required, the first telescopic shaft 106 serves as a fixed end, providing guidance for the sliding of the second telescopic shaft 107. The second telescopic shaft 107 slides along the inner wall of the first telescopic shaft 106 to achieve height adjustment. When it needs to be raised, the second telescopic shaft 107 slides upward; when it needs to be lowered, the second telescopic shaft 107 slides downward. Simultaneously, the first fixing ring 108 on the surface of the first telescopic shaft 106 and the second fixing ring 109 on the surface of the second telescopic shaft 107 move together with the telescopic movement. As the second telescopic shaft 107 moves, the first limiting shaft 110 fixed at the top of the first fixed ring 108 is movably connected to the first limiting member, and the second limiting shaft 112 fixed on the second fixed ring 109 is movably connected to the second connecting member. The first limiting member and the second connecting member are movably hinged through the connecting shaft 111. During the sliding of the second telescopic shaft 107, the first limiting member and the second connecting member rotate around the connecting shaft 111, which can adapt to the angle change of the telescopic shaft, prevent jamming during the telescopic process, and at the same time ensure that the first telescopic shaft 106 and the second telescopic shaft 107 always maintain coaxiality, avoiding unstable support due to offset.

[0022] A connecting rod 2 is fixedly connected to the bottom of the second telescopic shaft 107. A pad 201 is provided at the bottom of the connecting rod 2. One side of the pad 201 is fixedly connected to the connecting plate 101. A pad block 202 is fixedly connected to the top of the pad 201. A groove is provided at the top of the pad block 202. A roller shaft 203 is fixedly connected in the groove. A sliding block 204 is slidably connected in the groove. The top of the sliding block 204 is fixedly connected to the bottom of the connecting rod 2. During operation, the connecting rod 2 fixed at the bottom of the second telescopic shaft 107 transmits the pressure borne by the telescopic component to the sliding block 204. The sliding block 204 is fitted into the groove at the top of the pad block 202 and can slide laterally along the groove. By adjusting its own displacement, it can change the horizontal deviation of the semi-trailer.

[0023] Both sides of the pad 202 are fixedly connected to the fixing members 205. The top of the fixing members 205 is provided with a sliding groove. The slider 206 is slidably connected in the sliding groove. The slider 206 is fixedly connected to the sliding block 204. During operation, the pad 202 is fixed on the top of the pad plate 201. The sliding groove on its top provides a sliding track for the sliding block 204, ensuring that the sliding block 204 can move in the specified direction and avoid deviation. The roller shaft 203 fixed in the sliding groove contacts the bottom of the sliding block 204, converting the sliding friction between the sliding block 204 and the inner wall of the sliding groove into rolling friction, greatly reducing the friction force, so that the sliding block 204 can slide easily under pressure, improving the flexibility and efficiency of level calibration.

[0024] The bottom of the support block 1 is fixedly connected to the support base 3, and the bottom of the support base 3 is fixedly connected to the base plate 301.

[0025] A connecting block 4 is fixedly connected to the top of the support block 1, and a load-bearing plate 401 is fixedly connected to the top of the connecting block 4.

[0026] The top of the load-bearing plate 401 has a through hole.

[0027] The working principle and usage process of this utility model are as follows: First, the force on the side of the support block 1 is transmitted to the fixed plate 105 through the connecting plate 101 and the limiting plate 103. When the height needs to be adjusted, the first telescopic shaft 106 serves as a fixed end, providing guidance for the sliding of the second telescopic shaft 107. The second telescopic shaft 107 slides along the inner wall of the first telescopic shaft 106 to achieve height adjustment. When it needs to be raised, the second telescopic shaft 107 slides upward; when it needs to be lowered, the second telescopic shaft 107 slides downward. At the same time, the first fixed ring 108 on the surface of the first telescopic shaft 106 and the second fixed ring 109 on the surface of the second telescopic shaft 107 move synchronously with the telescopic movement. The first limiting shaft 110 fixed at the top of the first fixed ring 108 is movably connected to the first limiting member. The second limiting shaft 112 fixed on the second fixed ring 109 is movably connected to the second connecting member. The first limiting member and the second connecting member are movably hinged through the connecting shaft 111. During the sliding process of the second telescopic shaft 107, the first limiting member and the second connecting member... The connector rotates around the connecting shaft 111 to adapt to changes in the angle of the telescopic shaft, preventing jamming during telescopic movement. It also ensures that the first telescopic shaft 106 and the second telescopic shaft 107 remain coaxial, preventing instability due to misalignment. The connecting rod 2 fixed at the bottom of the second telescopic shaft 107 transmits the pressure borne by the telescopic assembly to the sliding block 204. The sliding block 204 is fitted into the groove at the top of the pad 202 and can slide laterally along the groove, adjusting its position through its own displacement to change the horizontal deviation of the semi-trailer. The pad 202 is fixed to the top of the pad plate 201, and the groove at its top provides a sliding track for the sliding block 204, ensuring that the sliding block 204 can move in the specified direction and avoid misalignment. The roller 203 fixed inside the groove contacts the bottom of the sliding block 204, converting the sliding friction between the sliding block 204 and the inner wall of the groove into rolling friction, significantly reducing friction and allowing the sliding block 204 to slide easily under pressure, improving the flexibility and efficiency of horizontal calibration.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An automatic leveling support device for a semi-trailer, comprising a support block (1), characterized in that: A connecting plate (101) is fixedly connected to one side of the support block (1). A first fixed shaft (102) is fixedly connected to the side of the connecting plate (101) away from the support block (1). A limiting plate (103) is fixedly connected to the surface of the first fixed shaft (102). A second fixed shaft (104) is fixedly connected to the end of the limiting plate (103) away from the first fixed shaft (102). A fixing plate (105) is fixedly connected to one side of the second fixed shaft (104). A first telescopic shaft (106) is fixedly connected to the bottom of the fixing plate (105). A second telescopic shaft (107) is sleeved on the bottom of the first telescopic shaft (106). A first fixing ring (108) and a second fixing ring (109) are fixedly connected to the surfaces of the second telescopic shaft (106) and the second telescopic shaft (107), respectively. A first limiting shaft (110) is fixedly connected to the top of the first fixing ring (108). A first limiting member is movably connected to the surface of the first limiting shaft (110). A connecting shaft (111) is movably connected to the end of the first limiting member away from the first limiting shaft (110). A second connecting member is movably connected to the surface of the connecting shaft (111). A second limiting shaft (112) is movably connected to the end of the second connecting member away from the connecting shaft (111). The second limiting shaft (112) is fixedly connected to the second fixing ring (109).

2. The automatic leveling and support device for a semi-trailer according to claim 1, characterized in that: A connecting rod (2) is fixedly connected to the bottom of the second telescopic shaft (107). A pad (201) is provided at the bottom of the connecting rod (2). One side of the pad (201) is fixedly connected to the connecting plate (101). A pad block (202) is fixedly connected to the top of the pad (201). A sliding groove is provided at the top of the pad block (202). A roller shaft (203) is fixedly connected in the sliding groove. A sliding block (204) is slidably connected in the sliding groove. The top of the sliding block (204) is fixedly connected to the bottom of the connecting rod (2).

3. The automatic leveling and support device for a semi-trailer according to claim 2, characterized in that: Both sides of the pad (202) are fixedly connected to the fixing member (205), and the top of the fixing member (205) is provided with a sliding groove. A slider (206) is slidably connected in the sliding groove, and the slider (206) is fixedly connected to the sliding block (204).

4. The automatic leveling and support device for a semi-trailer according to claim 1, characterized in that: The bottom of the support block (1) is fixedly connected to a support base (3), and the bottom of the support base (3) is fixedly connected to a base plate (301).

5. The automatic leveling and support device for a semi-trailer according to claim 1, characterized in that: The top of the support block (1) is fixedly connected to a connecting block (4), and the top of the connecting block (4) is fixedly connected to a load-bearing plate (401).

6. The automatic leveling and support device for a semi-trailer according to claim 5, characterized in that: The top of the load-bearing plate (401) has a through hole.

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