A support leg connection structure for a semi-trailer support device

Abstract

This utility model provides a support leg connection structure for a semi-trailer support device, relating to the field of semi-trailer support technology. It includes: a semi-trailer support leg; a hinge block welded to the upper surface of the support leg; a steering block provided at the upper end of the support leg; a limit baffle welded to the lower end of the steering block; the inner side of the steering block connected to the hinge block via a transmission column; a worm gear assembly mounted on the surface of the transmission column; a lateral adjustment frame attached to the upper surface of the steering block; positioning holes equidistantly opened on the side of the lateral adjustment frame; the front and rear inner walls of the lateral adjustment frame engaging with the steering block via fixed protrusions; a positioning plate attached to the front surface of the lateral adjustment frame; and the positioning plate through which the steering block and the lateral adjustment frame are connected via a first stud and a second stud. This utility model solves the problem in the prior art where the flexible rotation of the support leg connecting lugs easily leads to deviations in the vertical position of the support leg when placed down, affecting the stability of the semi-trailer support.

Description

Technical Field

[0001] This utility model relates to the field of semi-trailer support technology, specifically to a support leg connection structure for a semi-trailer support device. Background Technology

[0002] A semi-trailer is a heavy-duty transport vehicle connected to a semi-trailer unit via a towing pin. Its large cargo capacity makes it an important component of road freight transport. There are many types of semi-trailers, mainly including container semi-trailers, flatbed semi-trailers, and stake semi-trailers, each used for different freight situations. Outriggers are a common component of semi-trailers. When the semi-trailer is not connected to the tractor unit, the outriggers must extend to support the front end of the semi-trailer and ensure it remains level. A search revealed existing technology (Publication No.: CN202120917720.X) entitled "A semi-trailer support device outrigger connection structure," which describes "this utility model..." In the present invention, when not in use, the semi-trailer outriggers and the semi-trailer platform are rotated via the outrigger connecting ear plates to retract the outriggers into the outrigger slots. The movable hook on the hook will contact the limiting post, causing the movable hook to rotate via the elastic rotating shaft. After the limiting post is retracted into the inside of the movable hook, the movable hook will reset and engage with the upper hook under the elastic action of the elastic rotating shaft, thus completing the retraction of the semi-trailer outriggers and preventing them from contacting the ground and being damaged during vehicle operation. However, in the existing technology, the outrigger connecting ear plates can drive the outriggers to rotate flexibly, which can easily cause deviations in the vertical position of the outriggers when they are lowered, affecting the stability of the semi-trailer support. Utility Model Content

[0003] To overcome the shortcomings of the existing technology, a support leg connection structure for a semi-trailer support device is provided to solve the problem that in the existing technology, the support leg connection lug can drive the entire support leg to rotate flexibly, which makes it easy for the vertical position of the support leg to deviate and affect the stability of the semi-trailer support.

[0004] To achieve the above objectives, a support leg connection structure for a semi-trailer support device is provided, comprising: a semi-trailer support leg, wherein a hinge block is welded to the upper end face of the semi-trailer support leg.

[0005] The upper end of the semi-trailer support leg is provided with a steering block, the lower end of the steering block is welded with a limit baffle, the inner side of the steering block is connected to the hinge block through a transmission column, the transmission column is equipped with a worm gear assembly, the upper surface of the steering block is attached to a lateral adjustment frame, the side of the lateral adjustment frame is provided with positioning holes at equal intervals, the front and rear inner walls of the lateral adjustment frame are engaged with the steering block through a fixing protrusion, the front surface of the lateral adjustment frame is attached to a positioning plate, and the positioning plate is connected to the steering block and the lateral adjustment frame through a first stud and a second stud.

[0006] Furthermore, a piston column is provided inside the lower end of the semi-trailer support leg, and a support leg base is hinged to the lower end of the piston column.

[0007] Furthermore, a transmission column is fixed through the inner side of the hinge block, a worm gear assembly is installed in the front groove of the steering block, and an adjustment column is provided on the front surface of the steering block.

[0008] Furthermore, the rear side of the adjusting column is connected to the worm of the worm gear assembly, and the worm gear assembly is fixed to the cylindrical surface of the transmission column through the worm wheel.

[0009] Furthermore, a buffer pad is adhered to the right side of the limiting baffle, and a semi-trailer support foot is attached to the side of the buffer pad.

[0010] Furthermore, the steering block has a connecting hole on its surface, and a first stud and a second stud are connected through the connecting hole and the positioning hole.

[0011] Furthermore, a first stud and a second stud are welded to the rear side of the positioning plate; and the first stud is located to the left of the second stud.

[0012] Furthermore, the first stud and the second stud are respectively fixed to the rear side of the transverse adjustment frame by fastening nuts.

[0013] The beneficial effects of this utility model are as follows: the semi-trailer support device's outrigger connection structure utilizes the worm gear assembly within the steering block to drive the semi-trailer outrigger to rotate and retract or lower. This allows the limiting baffle to restrict the semi-trailer outrigger's downward displacement, ensuring the semi-trailer support device is upright on the ground. This facilitates efficient self-locking of the semi-trailer support device's rotational orientation. The steering block drives the semi-trailer outrigger to move linearly at the lateral adjustment frame, further independently adjusting the support position of the semi-trailer outrigger. This allows the outrigger to avoid pit edges and soft ground, preventing localized settlement or slippage of the semi-trailer support device, ensuring sufficient load-bearing capacity, guaranteeing the overall stability of the semi-trailer support device, and improving the applicability of the semi-trailer outrigger connection structure. Attached Figure Description

[0014] Figure 1 This is a front view schematic diagram of the support leg connection structure of the semi-trailer support device according to an embodiment of the present utility model.

[0015] Figure 2 This is a side view of the support leg connection structure of the semi-trailer support device according to an embodiment of the present utility model.

[0016] Figure 3This is a partial side cross-sectional view of the support leg connection structure of the semi-trailer support device according to an embodiment of the present invention.

[0017] Figure 4 This is a front view partial connection structure diagram of the semi-trailer support legs and steering blocks according to an embodiment of the present utility model.

[0018] Figure 5 This is a top view of the positioning plate according to an embodiment of the present invention.

[0019] In the diagram: 1. Semi-trailer support leg; 11. Support leg base; 12. Piston cylinder; 13. Hinge block; 2. Steering block; 21. Limiting baffle; 22. Adjusting column; 23. Transmission column; 24. Worm gear assembly; 25. Buffer pad; 26. Connecting hole; 3. Lateral adjustment frame; 31. Positioning hole; 32. Fixing protrusion; 4. Positioning plate; 41. First stud; 42. Second stud; 43. Fastening nut. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Reference Figures 1 to 5 As shown, this utility model provides a support leg connection structure for a semi-trailer support device, including: a semi-trailer support leg 1, and a hinge block 13 welded to the upper end face of the semi-trailer support leg 1.

[0022] A steering block 2 is provided on the upper end of the semi-trailer support leg 1. A limit baffle 21 is welded to the lower end of the steering block 2. The inner side of the steering block 2 is connected to the hinge block 13 through a transmission column 23. A worm gear assembly 24 is installed on the cylindrical surface of the transmission column 23. A lateral adjustment frame 3 is attached to the upper surface of the steering block 2. Positioning holes 31 are equidistantly opened on the side of the lateral adjustment frame 3. The inner walls of the front and rear sides of the lateral adjustment frame 3 are engaged with the steering block 2 through a fixing protrusion 32. A positioning plate 4 is attached to the front surface of the lateral adjustment frame 3. The positioning plate 4 is connected to the steering block 2 and the lateral adjustment frame 3 through a first stud 41 and a second stud 42.

[0023] When lowering the semi-trailer support leg 1, manually rotate the adjusting column 22 clockwise to rotate the semi-trailer support leg 1 downwards until the side of the semi-trailer support leg 1 is in contact with the limiting baffle 21. At this time, the semi-trailer support leg 1 is in a perpendicular state to the vehicle body, which facilitates stable support of the semi-trailer. Rotating the adjusting column 22 counterclockwise facilitates the retraction of the semi-trailer support leg 1. When there is a pit or soft ground at the lowering position, first remove the first stud 41 and the second stud 42 on the side of the positioning plate 4, and horizontally pull the steering block 2 to move it in a straight line within the transverse adjusting frame 3 to avoid the pit or soft ground before lowering the semi-trailer support leg 1.

[0024] In this embodiment, a piston column 12 is provided inside the lower end of the semi-trailer support leg 1, and a support leg base 11 is hinged to the lower end of the piston column 12.

[0025] In a preferred embodiment, the piston rod 12 can extend and retract within the semi-trailer support leg 1, thereby pushing the support leg base 11 to support and conform to the ground. The semi-trailer support leg 1 can be hydraulically or electrically driven.

[0026] In this embodiment, a transmission column 23 is fixedly fixed through the inner side of the hinge block 13, a worm gear assembly 24 is installed in the front groove of the steering block 2, and an adjusting column 22 is provided on the front surface of the steering block 2. The rear side of the adjusting column 22 is connected to the worm of the worm gear assembly 24, and the worm gear assembly 24 is fixed to the cylindrical surface of the transmission column 23 through the worm wheel. A buffer pad 25 is adhered to the right side of the limiting baffle 21, and a semi-trailer support foot 1 is attached to the side of the buffer pad 25.

[0027] In a preferred embodiment, rotating the adjusting column 22 on the front surface of the steering block 2 drives the worm of the worm gear assembly 24 to rotate, which in turn drives the worm wheel on the surface of the transmission column 23 to rotate, thereby achieving the effect of rotating the semi-trailer support foot 1. This facilitates the efficient self-locking semi-trailer support device to rotate in a fixed position. The buffer pad 25 on the side of the limiting baffle 21 reduces the impact force between the limiting baffle 21 and the semi-trailer support foot 1.

[0028] In this embodiment, a connecting hole 26 is provided on the surface of the steering block 2, and a first stud 41 and a second stud 42 are connected through both the connecting hole 26 and the positioning hole 31. The first stud 41 and the second stud 42 are welded to the rear side of the positioning plate 4; and the first stud 41 is located to the left of the second stud 42. The first stud 41 and the second stud 42 are respectively fixed to the rear side of the transverse adjustment frame 3 by fastening nuts 43.

[0029] In a preferred embodiment, the positioning plate 4 secures the steering block 2 to the surface of the transverse adjustment frame 3 via a screw connection using a first stud 41, a second stud 42, and a fastening nut 43. This facilitates the positioning of the steering block 2 after movement, allowing for further independent adjustment of the support position of the semi-trailer support feet 1. It also helps the support feet of the semi-trailer support device avoid pit edges and soft ground, preventing localized settlement or slippage of the semi-trailer support device and ensuring the overall stability of the semi-trailer support device.

[0030] The outrigger connection structure of this utility model for a semi-trailer support device effectively solves the problem in the prior art where the outrigger connecting lugs can drive the entire outrigger to rotate flexibly, causing deviations in the vertical position of the outrigger when it is placed down, affecting the stability of the semi-trailer support. It ensures that the semi-trailer support device is upright on the ground, facilitates efficient self-locking of the semi-trailer support device rotation, and allows for independent adjustment of the support position of the semi-trailer outriggers. This helps the outriggers avoid pit edges and soft ground, preventing localized settlement or slippage of the semi-trailer support device, ensuring sufficient load-bearing capacity, guaranteeing the overall stability of the semi-trailer support device, and improving the applicability of the outrigger connection structure. This invention is suitable for outrigger connection structures of semi-trailer support devices.

[0031] 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 and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A foot connection structure of a semi-trailer support device, comprising: A semi-trailer support leg (1), wherein a hinge block (13) is welded to the upper end face of the semi-trailer support leg (1), characterized in that: The upper end of the semi-trailer support leg (1) is provided with a steering block (2), and the lower end of the steering block (2) is welded with a limit baffle (21). The inner side of the steering block (2) is connected to the hinge block (13) through a transmission column (23). A worm gear assembly (24) is installed on the cylindrical surface of the transmission column (23). A lateral adjustment frame (3) is attached to the upper surface of the steering block (2). The lateral adjustment frame (3) has positioning holes (31) equidistantly opened on the side. The inner walls of the front and rear sides of the lateral adjustment frame (3) are engaged with the steering block (2) through a fixing protrusion (32). A positioning plate (4) is attached to the front surface of the lateral adjustment frame (3). The positioning plate (4) is connected to the steering block (2) and the lateral adjustment frame (3) through a first stud (41) and a second stud (42).

2. A jack connection structure of a semi-trailer support device according to claim 1, characterized in that, A piston column (12) is provided inside the lower end of the semi-trailer support leg (1), and a support leg base (11) is hinged to the lower end of the piston column (12).

3. The leg connection structure of a semi-trailer support device according to claim 1, characterized in that, A transmission column (23) is fixed through the inner side of the hinge block (13), a worm gear assembly (24) is installed in the front groove of the steering block (2), and an adjustment column (22) is provided on the front surface of the steering block (2).

4. A jack connection structure of a semi-trailer support device according to claim 3, characterized in that, The rear side of the adjusting column (22) is connected to the worm of the worm gear assembly (24), and the worm gear assembly (24) is fixed to the cylindrical surface of the transmission column (23) through the worm wheel.

5. The leg connection structure of a semi-trailer support device according to claim 1, characterized by The right side of the limiting baffle (21) is bonded with a buffer pad (25), and the side of the buffer pad (25) is fitted with a semi-trailer support foot (1).

6. The leg connection structure of a semi-trailer support device according to claim 1, characterized by The steering block (2) has a connecting hole (26) on its surface. A first stud (41) and a second stud (42) are connected through the connecting hole (26) and the positioning hole (31).

7. The leg connection structure of a semi-trailer support device according to claim 1, characterized by The positioning plate (4) has a first stud (41) and a second stud (42) welded to its rear side; and the first stud (41) is located to the left of the second stud (42).

8. The support leg connection structure of a semi-trailer support device according to claim 7, characterized in that, The first stud (41) and the second stud (42) are respectively fixed to the rear side of the transverse adjustment frame (3) by fastening nuts (43).

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