Liftable auxiliary supporting leg for trailer

Abstract

The liftable auxiliary supporting leg comprises a vehicle body, an adjusting device is arranged outside the vehicle body, the adjusting device comprises a connecting block, the connecting block is slidably connected to the interior of a bearing seat, a shaft sleeve is fixedly installed outside the connecting block, a bevel gear rod is rotatably connected to the interior of the shaft sleeve, and the bevel gear rod is rotatably connected to the interior of the bearing seat. The outer portion of the bevel gear rod is meshed with a bevel gear threaded rod. According to the liftable auxiliary supporting leg for the trailer, a limiting and fixing device is taken down or pulled out, then an electric sliding rail is opened to drive a moving block and a hinge rod to move in the opposite directions, a shaft sleeve is matched with a connecting block to move downwards in a bearing seat so as to support a trailer body, and then a bevel gear rod is rotated to drive a bevel gear threaded rod to rotate; the lifting column moves downwards in the shaft sleeve, the base makes contact with the ground, all the components are limited and fixed through the limiting and fixing device, and therefore the purposes that lifting adjustment is achieved, and the practicability of the device is improved are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of trailers, in particular to a liftable auxiliary support leg for a trailer. Background Art

[0002] A trailer is a vehicle used to tow cars. It consists of a chassis, lifting device, lifting and traction device, hydraulic system, electronic control system, body and toolbox. It has multiple functions such as lifting, pulling and lifting and traction. The trailer auxiliary support legs are a very important component of the trailer frame, mainly used to prevent the lifting part from suddenly dropping and causing safety accidents.

[0003] However, the existing auxiliary support legs are too simple in structure and function, and cannot flexibly cope with various supporting terrains and situations, resulting in low practicality of the auxiliary support legs. In addition, the existing auxiliary support legs are too complicated to operate when in use, which easily increases the workload of workers. Therefore, a liftable auxiliary support leg for a trailer is proposed. Utility Model Content

[0004] In response to the deficiencies in the prior art, the present invention provides a liftable auxiliary support leg for a trailer, which has the advantages of liftable adjustment function, increases the practicality of the device, and solves the problem that the structure of the existing auxiliary support leg needs to be optimized.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a liftable auxiliary support leg for a trailer, comprising a vehicle body, a bearing seat fixedly mounted on the bottom of the vehicle body, a bracket shaft fixedly mounted on the outside of the bearing seat, an adjustment device provided on the outside of the vehicle body, a limited position fixing device provided on the outside of the vehicle body, and a base provided on the outside of the vehicle body;

[0006] The adjusting device includes a connecting block, the inner sliding connection of the bearing seat is connected to the connecting block, the outer fixed installation of the connecting block is provided with a shaft sleeve, the inner rotation connection of the shaft sleeve is provided with a bevel gear rod, the outer part of the bevel gear rod is engaged with a bevel gear threaded rod, the outer part of the bevel gear threaded rod is connected to a lifting column through threads, the outer part of the shaft sleeve is fixedly provided with a base plate, the inner part of the base plate is fixedly provided with an electric slide rail, the outer part of the electric slide rail is slidably provided with a moving block, and the top of the moving block is fixedly provided with a hinged rod.

[0007] Furthermore, the limiting and fixing device includes a mounting sleeve, the outside of the shaft sleeve is fixedly installed with the mounting sleeve, the inside of the mounting sleeve is movably connected to the limiting rod, the outside of the limiting rod is fixedly installed with a retaining ring, the outside of the retaining ring is fixedly installed with a spring body, the top of the base plate is movably connected with an insert, and the bottom of the insert is fixedly installed with a plug-in column.

[0008] Furthermore, there are two bearing seats, the tops of the two bearing seats are fixedly connected to the bottom of the vehicle body, the left and right sides of the bracket shaft are fixedly connected to the opposite sides of the two bearing seats respectively, and the number of the connecting blocks and the shaft sleeves are both two, the outer surfaces of the two connecting blocks are respectively slidably connected to the inner parts of the two bearing seats, and the left and right sides of the two connecting blocks are fixedly connected to the opposite sides of the two shaft sleeves respectively.

[0009] Furthermore, there are two bevel gear rods and two bevel threaded rods, the tops of the two bevel threaded rods are rotatably connected to the inner top walls of the two shaft sleeves, the tops of the two bevel threaded rods pass through the interiors of the two shaft sleeves and respectively engage with the outer surfaces of the two bevel gear rods, the number of the lifting columns and the base are two, the bottoms of the two lifting columns are fixedly connected to the tops of the two bases, and the outsides of the two lifting columns are fixedly installed with limit strips.

[0010] Furthermore, the number of the electric slide rails and moving blocks is four, the number of the hinged rods is four, the outsides of the four electric slide rails are respectively slidably connected to the insides of the four moving blocks, the tops of the four moving blocks are respectively fixedly connected to the bottoms of the four hinged rods, and the tops of the four hinged rods are respectively hinged to the front and rear sides of the bracket shaft.

[0011] Furthermore, there are two mounting sleeves, which are respectively located on the left and right sides of the two shaft sleeves, the outside of the retaining ring is slidably connected to the inside of the mounting sleeve, the spring body is located between the outside of the retaining ring and the mounting sleeve, the spring body is sleeved with the limiting rod, and the outsides of the two lifting columns are respectively provided with a number of limiting holes, the insides of the limiting holes are plugged into the outside of the limiting rod, the number of the plug-ins is two, and two plug-in columns are fixedly installed on the bottom of each of the plug-ins, and the top of the base plate is provided with a plug-in hole adapted to the plug-in column.

[0012] Beneficial effects

[0013] Compared with the existing technology, the technical solution of this application has the following beneficial effects:

[0014] 1. The liftable auxiliary support leg for trailers is first removed or pulled out of the limit fixing device, and then the electric slide rail is turned on to drive the moving block and the hinged rod to move in opposite directions, so that the shaft sleeve cooperates with the connecting block to move downward in the bearing seat to support the vehicle body, and then the bevel gear rod is rotated to drive the bevel gear threaded rod to rotate, so that the lifting column moves downward in the shaft sleeve, so that the base contacts the ground, and then the various components are limited and fixed by the limit fixing device, thereby achieving the purpose of liftable adjustment and increasing the practicality of the device.

[0015] 2. After the adjustment of the liftable auxiliary support leg for the trailer is completed, first insert the two inserts into the plug-in holes in the base plate in conjunction with the plug-in columns, thereby limiting and fixing the moving block and the hinged rod to prevent the moving block and the hinged rod from moving in two opposite directions. Then, under the action of the spring body, the limit rod is driven to move through the retaining ring, so that the limit rod is inserted into the limit hole of the lifting column, thereby fixing and limiting the lifting column, thereby achieving the purpose of fixing and limiting the internal components of the adjustment device and increasing the stability of the device after adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the front structure of the utility model;

[0017] Figure 2 This is a front cross-sectional structural diagram of the utility model;

[0018] Figure 3 This is a schematic diagram of a partial top view of the bottom plate of the utility model;

[0019] Figure 4 For this utility model Figure 2 A in the middle is an enlarged structural diagram;

[0020] Figure 5 For this utility model Figure 2 Enlarged structural diagram at point B in the middle.

[0021] In the figure: 1. Car body; 2. Bearing seat; 3. Bracket shaft; 4. Adjusting device; 401. Connecting block; 402. Bushing; 403. Bevel gear rod; 404. Bevel gear threaded rod; 405. Lifting column; 406. Bottom plate; 407. Electric slide rail; 408. Moving block; 409. Articulated rod; 5. Limiting and fixing device; 501. Mounting sleeve; 502. Limiting rod; 503. Retaining ring; 504. Spring body; 505. Insert; 506. Connecting column; 6. Base. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] See also Figure 1-5A liftable auxiliary support leg for a trailer includes a body 1, a bearing seat 2 is fixedly mounted on the bottom of the body 1, a bracket shaft 3 is fixedly mounted on the outside of the bearing seat 2, an adjustment device 4 is provided on the outside of the body 1, a limited position fixing device 5 is provided on the outside of the body 1, and a base 6 is provided on the outside of the body 1;

[0024] The adjusting device 4 includes a connecting block 401, the inner sliding connection of the bearing seat 2 is connected to the connecting block 401, the outer fixed installation of the connecting block 401 is a shaft sleeve 402, the inner rotation connection of the shaft sleeve 402 is connected to the bevel gear rod 403, the outer meshing of the bevel gear rod 403 is engaged with the bevel gear threaded rod 404, the outer thread connection of the bevel gear threaded rod 404 is connected to the lifting column 405, the outer fixed installation of the shaft sleeve 402 is fixed to the base plate 406, the inner fixed installation of the bottom plate 406 is fixed to the electric slide rail 407, the outer sliding connection of the electric slide rail 407 is connected to the moving block 408, and the top of the moving block 408 is fixedly installed with a hinged rod 409.

[0025] Furthermore, the limiting and fixing device 5 includes a mounting sleeve 501, the outside of the shaft sleeve 402 is fixedly installed with the mounting sleeve 501, the inside of the mounting sleeve 501 is movably connected to the limiting rod 502, the outside of the limiting rod 502 is fixedly installed with a retaining ring 503, the outside of the retaining ring 503 is fixedly installed with a spring body 504, the top of the base plate 406 is movably connected with an insert 505, and the bottom of the insert 505 is fixedly installed with a plug-in column 506.

[0026] Specifically, such as Figure 2 As shown, when the auxiliary support legs are needed, the electric slide rail 407 is turned on to drive the moving block 408 and the hinge rod 409 to move, thereby driving the shaft sleeve 402 and the upper structure to move downward, so that the base 6 contacts the ground, and the vehicle body 1 can be initially supported. Then, after the insert 505 and the plug column 506 are inserted into the bottom plate 406, the moving block 408 and the hinge rod 409 can be fixed and limited.

[0027] Specifically, such as Figure 2 As shown, when the ground is not flat enough and there are potholes, the limit rod 502 can be pulled and the retaining ring 503 can be used to squeeze the spring body 504. Then, the bevel gear rod 403 on the side that needs to be adjusted is rotated to make the bevel gear rod 403 drive the bevel gear threaded rod 404 to move downward, thereby ensuring that the base 6 is in contact with the ground to play a supporting effect. Then, the limit rod 502 is loosened, and the limit rod 502 can be inserted into the limit hole in the lifting column 405 under the action of the spring body 504, thereby fixing the lifting column 405. This arrangement greatly improves the practicality of the device.

[0028] During implementation, follow these steps:

[0029] 1) First remove or pull out the limiting fixture 5, then open the electric slide 407 to drive the moving block 408 and the hinge rod 409 to move in opposite directions;

[0030] 2) Then, the bevel gear rod 403 is rotated to drive the bevel gear threaded rod 404 to rotate, thereby driving the base 6 to descend through the lifting column 405 and contact the ground for support;

[0031] 3) Insert the insert 505 into the insertion hole in the bottom plate 406 through the insertion column 506, thereby limiting and fixing the moving block 408 and the hinge rod 409;

[0032] 4) Finally, under the action of the spring body 504, the limiting rod 502 is driven to move through the retaining ring 503 and inserted into the limiting hole of the lifting column 405 to fix it.

[0033] In summary, the liftable auxiliary support leg for trailers is firstly removed or pulled out of the limit fixing device 5, and then the electric slide rail 407 is turned on to drive the moving block 408 and the hinged rod 409 to move in opposite directions, so that the shaft sleeve 402 cooperates with the connecting block 401 to move downward in the bearing seat 2 to support the vehicle body 1, and then the bevel gear rod 403 is rotated to drive the bevel gear threaded rod 404 to rotate, so that the lifting column 405 moves downward in the shaft sleeve 402, so that the base 6 contacts the ground, and then the limit fixing device 5 is used to limit and fix each component, thereby achieving liftable adjustment and increasing the practicality of the device. For the purpose of stability, after the adjustment is completed, the two inserting pieces 505 are first inserted into the inserting holes in the bottom plate 406 in conjunction with the plug-in column 506, so as to limit and fix the moving block 408 and the hinge rod 409 to prevent the moving block 408 and the hinge rod 409 from moving in two opposite directions, and then under the action of the spring body 504, the limiting rod 502 is driven to move through the retaining ring 503, so that the limiting rod 502 is inserted into the limiting hole of the lifting column 405, thereby fixing and limiting the lifting column 405, thereby achieving the purpose of fixing and limiting the internal components of the adjustment device 4 and increasing the stability of the device after adjustment.

[0034] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0035] Although the 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 variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A liftable auxiliary support leg for a trailer, comprising a trailer body (1), characterized in that: A bearing seat (2) is fixedly mounted on the bottom of the vehicle body (1), a bracket shaft (3) is fixedly mounted on the outside of the bearing seat (2), an adjustment device (4) is provided on the outside of the vehicle body (1), a limited position fixing device (5) is provided on the outside of the vehicle body (1), and a base (6) is provided on the outside of the vehicle body (1); The adjusting device (4) comprises a connecting block (401), the interior of the bearing seat (2) is slidably connected to the connecting block (401), the exterior of the connecting block (401) is fixedly mounted with a shaft sleeve (402), the interior of the shaft sleeve (402) is rotatably connected to a bevel gear rod (403), the exterior of the bevel gear rod (403) is meshed with a bevel gear threaded rod (404), the exterior of the bevel gear threaded rod (404) is threadedly connected to a lifting column (405), the exterior of the shaft sleeve (402) is fixedly mounted with a base plate (406), the interior of the base plate (406) is fixedly mounted with an electric slide rail (407), the exterior of the electric slide rail (407) is slidably connected to a moving block (408), and the top of the moving block (408) is fixedly mounted with a hinged rod (409).

2. The liftable auxiliary support leg for a trailer according to claim 1, characterized in that: The limiting and fixing device (5) comprises a mounting sleeve (501), the mounting sleeve (501) is fixedly mounted on the outside of the shaft sleeve (402), the mounting sleeve (501) is movably connected to the inside of the limiting rod (502), a retaining ring (503) is fixedly mounted on the outside of the limiting rod (502), a spring body (504) is fixedly mounted on the outside of the retaining ring (503), the top of the bottom plate (406) is movably connected to an insert (505), and the bottom of the insert (505) is fixedly mounted with a plug-in column (506).

3. The liftable auxiliary support leg for a trailer according to claim 1, characterized in that: There are two bearing seats (2), the tops of the two bearing seats (2) are fixedly connected to the bottom of the vehicle body (1), the left and right sides of the bracket shaft (3) are fixedly connected to the opposite sides of the two bearing seats (2), the number of the connecting blocks (401) and the number of the shaft sleeves (402) are both two, the outer surfaces of the two connecting blocks (401) are slidably connected to the inside of the two bearing seats (2), and the left and right sides of the two connecting blocks (401) are fixedly connected to the opposite sides of the two shaft sleeves (402).

4. The liftable auxiliary support leg for a trailer according to claim 1, characterized in that: The number of the bevel gear rod (403) and the bevel gear threaded rod (404) is two, the tops of the two bevel gear threaded rods (404) are respectively rotatably connected to the inner top walls of the two shaft sleeves (402), the tops of the two bevel gear threaded rods (404) pass through the interiors of the two shaft sleeves (402) and are respectively engaged with the outer surfaces of the two bevel gear rods (403), the number of the lifting columns (405) and the base (6) is two, the bottoms of the two lifting columns (405) are respectively fixedly connected to the tops of the two bases (6), and the exteriors of the two lifting columns (405) are fixedly installed with limit bars.

5. The liftable auxiliary support leg for a trailer according to claim 1, characterized in that: The number of the electric slide rails (407) and the number of the moving blocks (408) are four, the number of the hinged rods (409) is four, the outsides of the four electric slide rails (407) are respectively slidably connected to the insides of the four moving blocks (408), the tops of the four moving blocks (408) are respectively fixedly connected to the bottoms of the four hinged rods (409), and the tops of the four hinged rods (409) are respectively hinged to the front and rear sides of the bracket shaft (3).

6. The liftable auxiliary support leg for a trailer according to claim 2, characterized in that: There are two mounting sleeves (501), and the two mounting sleeves (501) are respectively located on the left and right sides of the two shaft sleeves (402). The outside of the retaining ring (503) is slidably connected to the inside of the mounting sleeve (501). The spring body (504) is located between the outside of the retaining ring (503) and the mounting sleeve (501). The spring body (504) is sleeved with the limiting rod (502). The outsides of the two lifting columns (405) are respectively provided with a number of limiting holes, and the insides of the limiting holes are plugged into the outside of the limiting rod (502). There are two inserts (505), and the bottom of each insert (505) is fixedly installed with two plug-in columns (506). The top of the base plate (406) is provided with a plug-in hole adapted to the plug-in column (506).

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