Trailer supporting leg limiting device

Abstract

The utility model discloses a trailer supporting leg limiting device, and relates to the technical field of trailer supporting legs. The device comprises a telescopic fixing block, a fixing disc, supporting legs and a rotating fixing block, the fixing disc is fixedly installed outside the telescopic fixing block, a first fixing rod is fixedly installed outside the rotating fixing block and fixedly connected with the fixing disc, and a telescopic supporting assembly is fixedly installed outside the rotating fixing block and fixedly connected with the first fixing rod. In order to solve the problems that most of existing trailer supporting legs are double-supporting-leg columns, and supporting of the supporting leg columns is not stable enough under the condition that the ground is uneven or uneven through the double-supporting-leg column structure, the multi-supporting-leg supporting assembly is used for supporting the supporting legs of the trailer, and therefore the supporting legs of the trailer can be supported stably. Load can be distributed to the ground more uniformly through supporting of the multiple supporting legs, the pressure borne by each supporting leg independently is reduced, and therefore the risk of ground subsidence is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of trailer legs, in particular to a trailer leg limiting device. Background Art

[0002] Trailer legs are an important part for large trucks, trailers or semi-trailers. They are mainly used to support the vehicle body when the vehicle is parked to ensure the stability and safety of the vehicle. The main function of trailer legs is to support the vehicle body when the vehicle is parked, so that the vehicle can be parked or unloaded stably. They are usually composed of a retractable columnar structure that can bear the weight of the vehicle and transfer it to the ground, thereby reducing the burden on the vehicle's suspension system. Trailer legs are usually made of iron or other high-strength alloy materials to ensure sufficient load-bearing capacity and durability. The design of the legs includes components such as telescopic mechanisms, support bases, and support feet. The structural design and material selection of these components directly affect their service life and reliability. The operation of trailer legs is usually manual or electric. Manual operation unfolds or retracts the legs by manual rotation or lifting; electric operation is achieved through a motor or hydraulic system, which improves the convenience and efficiency of operation. The design of trailer legs must meet safety standards to ensure that they can provide stable support under different ground conditions to prevent the vehicle from tilting or overturning due to loss of balance, thereby ensuring the safety of the vehicle and cargo.

[0003] Most of the existing trailer legs are double leg columns. However, when the ground is uneven or uneven, the double leg column structure makes the support of the leg column unstable. If the support base on one side is not evenly loaded to the ground, the supporting capacity and stability of the leg may be reduced. In view of the above problems, the inventor proposes a trailer leg limit device to solve the above problems. Utility Model Content

[0004] In order to solve the problem that most of the existing trailer legs are double leg columns, and the double leg column structure leads to insufficient stability of the support of the leg columns when the ground is uneven or uneven, a multi-leg support assembly is used. Through the multi-leg support, the load can be more evenly distributed to the ground, reducing the pressure on each leg alone, thereby reducing the risk of ground subsidence; the purpose of the utility model is to provide a trailer leg limit device.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions: a trailer outrigger limiting device, comprising a telescopic fixed block, a fixed disc, a support foot and a rotating fixed block, wherein the fixed disc is fixedly mounted on the outside of the telescopic fixed block, a No. 1 fixed rod is fixedly mounted on the outside of the rotating fixed block, the No. 1 fixed rod is fixedly connected to the fixed disc, a telescopic support assembly is fixedly mounted on the outside of the rotating fixed block, and the telescopic support assembly comprises a No. 3 rotating shaft, a No. 7 rotating shaft, a No. 6 rotating shaft and a No. 5 rotating shaft;

[0006] A multi-leg support assembly is fixedly installed outside the telescopic fixed block, and the multi-leg support assembly includes a first rotating shaft, a second rotating shaft, a third rotating shaft, a first threaded rod, a first sliding rod and a fourth rotating shaft.

[0007] Preferably, a No. 2 sliding block is fixedly installed on the outside of the No. 1 fixed rod, a No. 3 sliding block is slidably connected to the outside of the No. 2 sliding block, a No. 2 telescopic rod is fixedly installed on the outside of the No. 3 sliding block, and the No. 2 telescopic rod is slidably connected to the supporting foot.

[0008] Preferably, the rotating fixed block is externally rotatably connected to a No. 2 rotating rod, the No. 2 rotating rod is externally rotatably connected to a No. 1 rotating rod, the No. 2 rotating rod is fixedly connected to the No. 5 rotating shaft, and the No. 1 rotating rod is fixedly connected to the No. 6 rotating shaft.

[0009] Preferably, the third rotating shaft rotates outside the rotating fixed block, the third rotating shaft is fixedly installed with a seventh right-angle gear outside, the fifth rotating shaft is fixedly installed with a ninth right-angle gear outside, the ninth right-angle gear is meshed with the seventh right-angle gear, the sixth rotating shaft is fixedly installed with a second inner right-angle gear outside, the seventh rotating shaft is fixedly installed with a first inner right-angle gear outside, the first inner right-angle gear is meshed with the second inner right-angle gear.

[0010] Preferably, a right-angle gear No. 1 is fixedly mounted on the outside of the third rotating shaft, the first rotating shaft rotates on the outside of the second sliding block, a right-angle gear No. 3 is fixedly mounted on the outside of the first rotating shaft, the right-angle gear No. 3 is meshed with the right-angle gear No. 1, a third internal right-angle gear No. 3 is fixedly mounted on the outside of the seventh rotating shaft, a fourth internal right-angle gear No. 4 is fixedly mounted on the outside of the second rotating shaft, the fourth internal right-angle gear No. 3 is meshed with the internal right-angle gear No. 3.

[0011] Preferably, a threaded rod No. 1 is fixedly installed on the outside of the No. 1 rotating shaft, and the threaded rod No. 1 is threadedly connected to the No. 3 sliding block, and the threaded rod No. 1 is movably connected to the outside of the No. 1 sliding rod, and the No. 2 rotating shaft is slidably connected to the No. 1 sliding rod, and a No. 5 right-angle gear is fixedly installed on the outside of the No. 1 sliding rod, and the No. 4 rotating shaft rotates on the outside of the No. 3 sliding block, and a No. 6 right-angle gear is fixedly installed on the outside of the No. 4 rotating shaft, and the No. 6 right-angle gear is meshed with the No. 5 right-angle gear.

[0012] Preferably, the No. 1 sliding rod is rotatably connected to the No. 3 sliding block, a No. 2 threaded rod is fixedly installed outside the No. 4 rotating shaft, and the No. 2 threaded rod is threadedly connected to the supporting foot.

[0013] Preferably, the supporting feet are in multiple groups and distributed in a circular array.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] 1. In the present invention, by setting a multi-leg support assembly, the No. 3 rotating shaft can be driven to rotate by rotating the No. 2 rotating rod, and the No. 3 sliding block can be moved by rotating the No. 1 threaded rod, so that the multi-leg support can distribute the load to the ground more evenly, reducing the pressure on each leg alone, thereby reducing the risk of ground subsidence. This is particularly important for trailers that are parked for a long time or on soft soil or uneven ground. The multi-leg support can reduce the risk of accidental tipping, especially on unstable or uneven ground;

[0016] 2. In the utility model, by setting a telescopic support assembly, the telescopic support assembly can ensure that the legs can be safely extended and fixed on the ground when needed, thereby stabilizing the parking posture of the trailer. Through the setting of the limit device, the operator can more easily and safely control the extension and retraction of the legs without excessive manual adjustment or inspection, thereby improving the use efficiency of the trailer and the convenience of operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0019] Figure 2 This is a cross-sectional view of the rotating fixed block structure of the utility model.

[0020] Figure 3 This is a cross-sectional view of the telescopic fixed block structure of the utility model.

[0021] Figure 4 For this utility model Figure 2 A schematic diagram of the enlarged structure in the middle.

[0022] Figure 5 For this utility model Figure 3 Enlarged schematic diagram of the structure at point B in the middle.

[0023] Figure 6 For this utility model Figure 3 Enlarged schematic diagram of the structure at point C in the middle.

[0024] In the figure: 1. Telescopic fixed block; 101. No. 1 fixed rod; 102. No. 1 right angle gear; 103. No. 3 inner right angle gear; 104. No. 1 rotating shaft; 105. No. 3 right angle gear; 106. No. 4 inner right angle gear; 107. No. 2 rotating shaft; 108. No. 1 sliding rod; 109. No. 5 right angle gear; 110. No. 6 right angle gear; 111. No. 4 rotating shaft; 112. No. 1 threaded rod; 113. No. 2 threaded rod; 2. Fixed disc; 2 01. Fixing screws; 3. Support feet; 301. Sliding block No. 2; 302. Sliding block No. 3; 303. Telescopic rod No. 2; 4. Rotating fixed block; 401. Rotating shaft No. 3; 402. Right-angle gear No. 7; 403. Rotating shaft No. 7; 404. Inner right-angle gear No. 1; 405. Right-angle gear No. 9; 406. Inner right-angle gear No. 2; 407. Rotating shaft No. 6; 408. Rotating shaft No. 5; 409. Rotating rod No. 1; 410. Rotating rod No. 2. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] Example: Figure 1-6 As shown, the utility model provides a trailer outrigger limiting device, including a telescopic fixed block 1, a fixed disc 2, a support foot 3 and a rotating fixed block 4, the fixed disc 2 is fixedly mounted on the outside of the telescopic fixed block 1, a No. 1 fixed rod 101 is fixedly mounted on the outside of the rotating fixed block 4, the No. 1 fixed rod 101 is fixedly connected to the fixed disc 2, a telescopic support assembly is fixedly mounted on the outside of the rotating fixed block 4, and the telescopic support assembly includes a No. 3 rotating shaft 401, a No. 7 rotating shaft 403, a No. 6 rotating shaft 407 and a No. 5 rotating shaft 408;

[0027] A multi-leg support assembly is fixedly installed outside the telescopic fixed block 1, and the multi-leg support assembly includes a first rotating shaft 104, a second rotating shaft 107, a third rotating shaft 401, a first threaded rod 112, a first sliding rod 108 and a fourth rotating shaft 111.

[0028] A fixing screw 201 is fixedly installed on the outside of the fixed disc 2, a No. 2 sliding block 301 is fixedly installed on the outside of the No. 1 fixed rod 101, a No. 3 sliding block 302 is slidably connected to the outside of the No. 2 sliding block 301, a No. 2 telescopic rod 303 is fixedly installed on the outside of the No. 3 sliding block 302, and a No. 2 telescopic rod 303 is slidably connected to the outside of the supporting foot 3.

[0029] By adopting the above technical solution, the second telescopic rod 303 is connected to the support foot 3 through external sliding. The second threaded rod 113 can be rotated to move the second telescopic rod 303 away from the support foot 3, so that the support foot 3 finally supports the first fixed rod 101.

[0030] The rotating fixed block 4 is externally rotatably connected to a second rotating rod 410 , which is externally rotatably connected to a first rotating rod 409 . The second rotating rod 410 is fixedly connected to the fifth rotating shaft 408 , and the first rotating rod 409 is fixedly connected to the sixth rotating shaft 407 .

[0031] By adopting the above technical solution, the first rotating rod 409 is fixedly connected to the sixth rotating shaft 407 , so that the first rotating rod 409 can be rotated to drive the sixth rotating shaft 407 to rotate.

[0032] The third rotating shaft 401 rotates on the outside of the rotating fixed block 4, and the seventh right-angle gear 402 is fixedly installed on the outside of the third rotating shaft 401, and the ninth right-angle gear 405 is fixedly installed on the outside of the fifth rotating shaft 408, and the ninth right-angle gear 405 is meshed with the seventh right-angle gear 402. The second inner right-angle gear 406 is fixedly installed on the outside of the sixth rotating shaft 407, and the first inner right-angle gear 404 is fixedly installed on the outside of the seventh rotating shaft 403, and the first inner right-angle gear 404 is meshed with the second inner right-angle gear 406.

[0033] By adopting the above technical solution, the ninth right angle gear 405 is meshed with the seventh right angle gear 402 and the first inner right angle gear 404 is meshed with the second inner right angle gear 406, so that the fifth rotating shaft 408 can rotate to drive the seventh right angle gear 402 to rotate.

[0034] A right angle gear No. 102 is fixedly mounted on the outside of the third rotating shaft 401, the first rotating shaft 104 rotates on the outside of the second sliding block 301, a right angle gear No. 3 105 is fixedly mounted on the outside of the first rotating shaft 104, the right angle gear No. 3 105 is meshed with the right angle gear No. 1 102, a third inner right angle gear No. 3 103 is fixedly mounted on the outside of the seventh rotating shaft 403, a fourth inner right angle gear No. 4 106 is fixedly mounted on the outside of the second rotating shaft 107, the fourth inner right angle gear No. 4 106 is meshed with the third inner right angle gear No. 3 103.

[0035] By adopting the above technical solution, the fourth inner right angle gear 106 is meshed with the third inner right angle gear 103 , so that the seventh rotating shaft 403 can rotate to drive the second rotating shaft 107 to rotate.

[0036] A threaded rod No. 112 is fixedly installed on the outside of the No. 1 rotating shaft 104, and the threaded rod No. 112 is threadedly connected to the No. 3 sliding block 302. The threaded rod No. 112 is movably connected to the No. 1 sliding rod 108 on the outside. The No. 2 rotating shaft 107 is slidably connected to the No. 1 sliding rod 108. A No. 5 right-angle gear 109 is fixedly installed on the outside of the No. 1 sliding rod 108. The No. 4 rotating shaft 111 rotates on the outside of the No. 3 sliding block 302. A No. 6 right-angle gear 110 is fixedly installed on the outside of the No. 4 rotating shaft 111, and the No. 6 right-angle gear 110 is meshed with the No. 5 right-angle gear 109.

[0037] By adopting the above technical solution, the No. 1 threaded rod 112 is threadedly connected to the No. 3 sliding block 302 , and the No. 3 sliding block 302 can be moved in the opposite direction of the No. 2 sliding block 301 by rotating the No. 1 threaded rod 112 .

[0038] The first sliding rod 108 is rotatably connected to the third sliding block 302 , and a second threaded rod 113 is fixedly installed outside the fourth rotating shaft 111 , and the second threaded rod 113 is threadedly connected to the supporting foot 3 .

[0039] By adopting the above technical solution, the second threaded rod 113 is threadedly connected to the supporting foot 3, so that the second threaded rod 113 can be rotated to drive the supporting foot 3 to move downward.

[0040] The number of supporting legs 3 is multiple and they are distributed in a circular array.

[0041] By adopting the above technical solution, by providing multiple groups of supporting legs 3 distributed in a circular array, the multi-leg support can distribute the load to the ground more evenly, reducing the pressure on each leg alone, thereby reducing the risk of ground subsidence.

[0042] Working principle: when a trailer leg limiter is needed, the fixing disc 2 is fixedly installed on the outside of the trailer by using the fixing screw 201. When the trailer leg limiter is needed to support the trailer, the No. 2 rotating rod 410 is rotated to drive the No. 3 rotating shaft 401 to rotate, and the No. 1 rotating shaft 104 is driven to rotate by the rotation of the No. 3 rotating shaft 401. The No. 1 threaded rod 112 can be rotated by the rotation of the No. 1 rotating shaft 104, and finally the No. 3 sliding block 302 moves in the opposite direction of the No. 2 sliding block 301, and finally the trailer leg limiter is unfolded, so that it can support the trailer more stably.

[0043] Furthermore, rotating the No. 1 rotating rod 409 drives the No. 7 rotating shaft 403 to rotate, and the No. 2 rotating shaft 107 is driven to rotate through the rotation of the No. 7 rotating shaft 403, and the No. 1 sliding rod 108 is driven to rotate through the rotation of the No. 2 rotating shaft 107, and the No. 4 rotating shaft 111 is driven to rotate through the rotation of the No. 1 sliding rod 108, and finally the No. 2 threaded rod 113 is driven to rotate by the rotation of the No. 4 rotating shaft 111 and the supporting foot 3 is moved downward, so that the multi-leg support can distribute the load to the ground more evenly, reducing the pressure on each leg alone, thereby reducing the risk of ground subsidence. This is particularly important for trailers that are parked for a long time or on soft soil or uneven ground. The multi-leg support can reduce the risk of accidental tipping, especially on unstable or uneven ground.

[0044] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A trailer leg limiting device, comprising a telescopic fixing block (1), a fixing disc (2), a supporting foot (3) and a rotating fixing block (4), characterized in that: The fixed disc (2) is fixedly mounted on the outside of the telescopic fixed block (1); a first fixed rod (101) is fixedly mounted on the outside of the rotating fixed block (4); the first fixed rod (101) is fixedly connected to the fixed disc (2); a telescopic support assembly is fixedly mounted on the outside of the rotating fixed block (4); the telescopic support assembly comprises a third rotating shaft (401), a seventh rotating shaft (403), a sixth rotating shaft (407) and a fifth rotating shaft (408); A multi-leg support assembly is fixedly mounted on the outside of the telescopic fixed block (1), and the multi-leg support assembly comprises a first rotating shaft (104), a second sliding block (301), a third sliding block (302), a second rotating shaft (107), a third rotating shaft (401), a first threaded rod (112), a first sliding rod (108) and a fourth rotating shaft (111).

2. A trailer leg limiting device according to claim 1, characterized in that: The fixed disc (2) is fixedly mounted with a fixing screw (201) on the outside, the No. 1 fixed rod (101) is fixedly mounted with a No. 2 sliding block (301) on the outside, the No. 2 sliding block (301) is slidably connected to a No. 3 sliding block (302) on the outside, the No. 3 sliding block (302) is fixedly mounted with a No. 2 telescopic rod (303) on the outside, and the No. 2 telescopic rod (303) is slidably connected to the support foot (3) on the outside.

3. A trailer leg limiting device according to claim 1, characterized in that: The rotating fixed block (4) is externally rotatably connected to a second rotating rod (410), the second rotating rod (410) is externally rotatably connected to a first rotating rod (409), the second rotating rod (410) is fixedly connected to the fifth rotating shaft (408), and the first rotating rod (409) is fixedly connected to the sixth rotating shaft (407).

4. A trailer leg limiting device according to claim 1, characterized in that: The third rotating shaft (401) rotates outside the rotating fixed block (4), and a seventh right-angle gear (402) is fixedly installed on the outside of the third rotating shaft (401). A ninth right-angle gear (405) is fixedly installed on the outside of the fifth rotating shaft (408), and the ninth right-angle gear (405) is meshed with the seventh right-angle gear (402). A second inner right-angle gear (406) is fixedly installed on the outside of the sixth rotating shaft (407), and a first inner right-angle gear (404) is fixedly installed on the outside of the seventh rotating shaft (403), and the first inner right-angle gear (404) is meshed with the second inner right-angle gear (406).

5. The trailer leg limiting device according to claim 1, characterized in that: A first right-angle gear (102) is fixedly mounted on the outside of the third rotating shaft (401); the first rotating shaft (104) rotates on the outside of the second sliding block (301); a third right-angle gear (105) is fixedly mounted on the outside of the first rotating shaft (104); the third right-angle gear (105) is meshed with the first right-angle gear (102); a third inner right-angle gear (103) is fixedly mounted on the outside of the seventh rotating shaft (403); a fourth inner right-angle gear (106) is fixedly mounted on the outside of the second rotating shaft (107); the fourth inner right-angle gear (106) is meshed with the third inner right-angle gear (103).

6. The trailer leg limiting device according to claim 1, characterized in that: A No. 1 threaded rod (112) is fixedly installed on the outside of the No. 1 rotating shaft (104), and the No. 1 threaded rod (112) is threadedly connected to the No. 3 sliding block (302). The No. 1 threaded rod (112) is movably connected to the No. 1 sliding rod (108) on the outside. The No. 2 rotating shaft (107) is slidably connected to the No. 1 sliding rod (108), and a No. 5 right-angle gear (109) is fixedly installed on the outside of the No. 1 sliding rod (108). The No. 4 rotating shaft (111) rotates on the outside of the No. 3 sliding block (302), and a No. 6 right-angle gear (110) is fixedly installed on the outside of the No. 4 rotating shaft (111), and the No. 6 right-angle gear (110) is meshed with the No. 5 right-angle gear (109).

7. The trailer leg limiting device according to claim 1, characterized in that: The first sliding rod (108) is rotatably connected to the third sliding block (302), and a second threaded rod (113) is fixedly installed outside the fourth rotating shaft (111), and the second threaded rod (113) is threadedly connected to the supporting foot (3).

8. The trailer leg limiting device according to claim 1, characterized in that: The supporting legs (3) are provided in multiple groups and are distributed in a circular array.

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