Folding supporting leg for trailer

Abstract

The utility model discloses a folding landing leg for a trailer, which relates to the technical field of vehicle accessories and comprises an outer sleeve, an inner sleeve component is slidably connected in the outer sleeve, a U-shaped connecting piece is fixedly mounted in the middle of the upper end of a base, the inner sleeve component is fittingly connected with the U-shaped connecting piece, and a driving frame is mounted at the upper end of the outer sleeve. The upper end of the driving frame is fixedly connected with an upper sleeve, a U-shaped piece assembly is installed outside the upper sleeve, a mounting support is arranged at the upper end of the U-shaped piece assembly, and the U-shaped piece assembly is connected with the mounting support in a matched mode. An adjusting structure is arranged in the outer sleeve and the driving frame, and the inner sleeve assembly moves up and down, so that the supporting effect of the supporting legs on the trailer is achieved; a movable structure is arranged at the joint of the upper sleeve and the U-shaped piece assembly, when the supporting leg is not used, the limiting unit is pulled, so that the supporting leg is in a movable state, the supporting leg is folded, and the situation that the supporting leg makes contact with the ground in the moving process of the trailer, and consequently normal movement of the trailer is affected is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle accessories, in particular to a folding outrigger for a trailer. Background Art

[0002] A trailer is a type of vehicle suitable for clearing obstacles on urban roads and transporting small goods. The trailer itself has no power and needs to be powered by a tractor. It is connected to the tractor through a trailer hook. Since the trailer is heavy and the center of gravity is generally biased forward, outriggers are generally required for auxiliary support when removing the trailer from the tractor and after the trailer is removed. However, the outriggers cannot be folded and retracted when the trailer is moving. The outriggers will rub against the ground, affecting the normal movement of the trailer.

[0003] Based on this, a folding leg for a trailer is now provided, which can eliminate the disadvantages of the existing devices. Utility Model Content

[0004] The utility model aims to provide a folding leg for a trailer to solve the problems in the background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A folding leg for a trailer comprises an outer sleeve, a base and a U-shaped part assembly, wherein the inner sleeve assembly is slidably connected to the inner sleeve assembly, a U-shaped connecting piece is fixedly installed at the middle position of the upper end of the base, the inner sleeve assembly and the U-shaped connecting piece are connected by a hexagonal bolt and a nylon locking nut, a driving frame is fixedly installed on the upper end of the outer sleeve, the upper end of the driving frame is fixedly connected to an upper sleeve, a U-shaped part assembly is installed on the outside of the upper sleeve, a mounting bracket is arranged on the upper end of the U-shaped part assembly, and the U-shaped part assembly and the mounting bracket are connected by a hexagonal bolt and a nylon locking nut; an adjusting structure is arranged inside the outer sleeve and the driving frame for adjusting the length of the leg; a movable structure is arranged at the connection between the upper sleeve and the U-shaped part assembly for folding and stowing the leg.

[0007] On the basis of the above technical solutions, the present invention also provides the following optional technical solutions:

[0008] In an optional solution: the adjustment structure includes a nut, which is fixedly installed on the top of the inner sleeve assembly, the internal thread of the nut is connected to the adjusting screw, a bearing is installed on the outer wall of the adjusting screw, a flat washer is installed at the bottom of the bearing, and a drive unit is fixedly installed on the upper end of the adjusting screw.

[0009] In an optional solution: the driving unit includes a second bevel gear, which is fixedly mounted on the top of the adjusting screw, located inside the driving frame, meshingly connected to the first bevel gear, and one end of the first bevel gear extends to the front end of the driving frame and is fixedly connected to the wheel shaft.

[0010] In an optional scheme: the movable structure includes a connecting disc, which is fixedly installed at the front end of the upper sleeve. The connecting disc, the U-shaped part assembly and the upper sleeve are matched and connected at the middle position of the connecting disc through a hexagonal head bolt and a nylon locking nut. The upper sleeve is rotatably connected to the outer wall of the hexagonal head bolt. A plurality of adjustment holes are opened at the front end of the connecting disc, and a limiting unit is installed at the front end of the U-shaped part assembly.

[0011] In an optional scheme: the limiting unit includes a handle assembly, which is installed at the front end of the U-shaped part assembly, one end of the handle assembly is fixedly connected to the connecting plate, the middle position of the connecting plate is fixedly connected to an elastic cylindrical pin, the rear end of the connecting plate is symmetrically provided with perforations, and the front end of the U-shaped part assembly is fixedly installed with a movable sleeve corresponding to the perforation, the interior of the movable sleeve is slidably connected to a push rod pin, one end of the push rod pin is fixedly connected to a connecting rod, the connecting rod extends between the connecting plate and the handle assembly, a hanging ring is installed at the end of the connecting rod away from the push rod pin, a return spring is arranged on the outside of the connecting rod, and one end of the return spring is fixedly connected to the inner wall of the movable sleeve.

[0012] In an optional solution: plastic square plugs are installed on both left and right ends of the driving frame.

[0013] In an optional solution: an anti-slip layer is provided at the bottom end of the base.

[0014] In an optional solution: a sponge cover is installed on the outer surface of the handle assembly.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0016] 1. The utility model uses an adjustment structure to drive the adjusting screw to rotate through a driving unit. The adjusting screw drives the nut of the component to move up and down in one direction through thread transmission, thereby completing extension or retraction, thereby pushing the sleeve assembly in the component to move up and down, thereby realizing the supporting effect of the outrigger on the trailer.

[0017] 2. The utility model adopts a movable structure. When the outrigger is not in use, the limiting unit is pulled to make the upper sleeve movable, thereby making the outer sleeve movable, and the outer sleeve is rotated 90° to reach a retracted state, thereby preventing the outrigger from contacting and rubbing with the ground during the movement of the trailer, thereby affecting the normal movement of the trailer. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of each structural position of the utility model.

[0019] Figure 2 It is a structural schematic diagram of the adjustment structure position of the utility model.

[0020] Figure 3 It is a structural schematic diagram of the utility model with the outriggers folded up.

[0021] Figure 4 It is a structural schematic diagram of the front end position of the utility model.

[0022] Figure 5 It is a structural schematic diagram of the side end position of the utility model.

[0023] Notes on the accompanying drawings: 11. Outer sleeve; 12. Inner sleeve assembly; 13. Base; 14. Hexagon head bolt; 15. Nylon locking nut; 16. U-shaped part assembly; 17. Drive frame; 18. Return spring; 19. Handle assembly; 20. Push rod pin; 21. Adjusting screw; 22. Rotary wheel shaft; 23. Bearing; 24. Flat washer; 25. First bevel gear; 26. Plastic square plug; 27. Hanging ring; 28. Mounting bracket; 29. ​​Upper sleeve; 30. Elastic cylindrical pin; 31. Nut; 32. Second bevel gear; 33. Connecting disc. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0025] In one embodiment, Figure 1-Figure 5 As shown, a folding leg for a trailer comprises an outer sleeve 11, a base 13 and a U-shaped member assembly 16, wherein the inner sleeve assembly 12 is slidably connected inside the outer sleeve 11, a U-shaped connector is fixedly installed at the middle position of the upper end of the base 13, the inner sleeve assembly 12 and the U-shaped connector are matched and connected by a hexagonal bolt 14 and a nylon locking nut 15, a driving frame 17 is fixedly installed on the upper end of the outer sleeve 11, an upper sleeve 29 is fixedly connected to the upper end of the driving frame 17, a U-shaped member assembly 16 is installed outside the upper sleeve 29, a mounting bracket 28 is arranged on the upper end of the U-shaped member assembly 16, and the U-shaped member assembly 16 and the mounting bracket 28 are connected by a hexagonal bolt 14 and a nylon locking nut 15; an adjusting structure is arranged inside the outer sleeve 11 and the driving frame 17 for adjusting the length of the leg; a movable structure is arranged at the connection between the upper sleeve 29 and the U-shaped member assembly 16 for folding and stowing the leg.

[0026] In this embodiment, the mounting bracket 28 is welded to the chassis of the trailer, and the base 13 is supported on the ground to play a supporting role. The staff extends or retracts the legs by adjusting the structure. When the legs are not in use, the staff folds and stows the legs through the movable structure.

[0027] In one embodiment, Figure 2 As shown, the adjustment structure includes a nut 31, which is fixedly mounted on the top of the inner sleeve assembly 12. The internal thread of the nut 31 is connected to the adjusting screw 21. A bearing 23 is installed on the outer wall of the adjusting screw 21. A flat washer 24 is installed at the bottom of the bearing 23. A driving unit is fixedly mounted on the upper end of the adjusting screw 21.

[0028] The adjusting screw 21 is driven to rotate by the driving unit, and the adjusting screw 21 causes the nut 31 to move up and down in one direction through thread transmission, thereby completing extension or retraction, thereby pushing the inner sleeve assembly 12 to move up and down, so as to achieve the effect of supporting the trailer with the outriggers.

[0029] In one embodiment, Figure 1 and Figure 2 As shown, the driving unit includes a second bevel gear 32, which is fixedly mounted on the top of the adjusting screw. The second bevel gear 32 is located inside the driving frame 17. The second bevel gear 32 is meshedly connected to the first bevel gear 25. One end of the first bevel gear 25 extends to the front end of the driving frame 17 and is fixedly connected to the wheel shaft 22.

[0030] The first bevel gear 25 is driven to rotate by the manual rotating wheel shaft 22, and the first bevel gear 25 drives the second bevel gear 32 to rotate through the mutually meshing teeth, thereby driving the adjusting screw 21 to rotate, thereby making the base 13 in close contact with the ground, so that the legs can support the trailer.

[0031] In one embodiment, Figure 2 As shown, the movable structure includes a connecting disc 33, which is fixedly mounted on the front end of the upper sleeve 29. The connecting disc 33, the U-shaped component assembly 16 and the upper sleeve 29 are matched and connected at the middle position of the connecting disc 33 through the hexagonal head bolt 14 and the nylon locking nut 15. The upper sleeve 29 is rotatably connected to the outer wall of the hexagonal head bolt 14. A plurality of adjustment holes are opened at the front end of the connecting disc 33, and a limiting unit is installed at the front end of the U-shaped component assembly 16.

[0032] When the outrigger is not in use, the limiting unit is pulled to make the upper sleeve 29 movable, thereby making the outer sleeve 11 movable, and the outer sleeve 11 is rotated 90° to reach a folded state, and the limiting unit is released. The limiting unit puts the outrigger in a folded state, which is convenient for carrying on a trailer.

[0033] In one embodiment, Figure 3 , Figure 4 and Figure 5 As shown, the limiting unit includes a handle assembly 19, which is installed at the front end of the U-shaped part assembly 16, one end of the handle assembly 19 is fixedly connected to the connecting plate, the middle position of the connecting plate is fixedly connected to an elastic cylindrical pin 30, the rear end of the connecting plate is symmetrically provided with perforations, the front end of the U-shaped part assembly 16 is fixedly installed with a movable sleeve corresponding to the perforations, the interior of the movable sleeve is slidably connected with a push rod pin 20, one end of the push rod pin 20 is fixedly connected to a connecting rod, the connecting rod extends between the connecting plate and the handle assembly 19, a hanging ring 27 is installed at the end of the connecting rod away from the push rod pin 20, a return spring 18 is arranged on the outside of the connecting rod, and one end of the return spring 18 is fixedly connected to the inner wall of the movable sleeve.

[0034] When the outrigger is not in use, the handle assembly 19 is pulled, and the handle assembly 19 drives the push rod pin 20 to slide on the inner wall of the movable sleeve, the return spring 18 is compressed, and the staff folds the outrigger. After the outrigger is folded, the handle assembly 19 is released, and the return spring 18 rebounds, thereby resetting the handle assembly 19 and the push rod pin 20. The push rod pin 20 restricts the outrigger to a folded state, which is convenient for carrying on a trailer.

[0035] In one embodiment, Figure 1 As shown, plastic square plugs 26 are installed at both left and right ends of the driving frame 17.

[0036] When problems occur with the first bevel gear 25 and the second bevel gear 32 inside the drive frame 17, the staff can pull out the plastic square plug 26 to facilitate repair of the first bevel gear 25 and the second bevel gear 32 inside the drive frame 17; during daily use, the plastic square plug 26 can prevent impurities from entering the drive frame 17, thereby extending the service life of the support legs.

[0037] In one embodiment, Figure 2 As shown, the bottom end of the base 13 is provided with an anti-slip layer.

[0038] By providing an anti-skid layer at the bottom of the base 13, the friction coefficient of the bottom of the base 13 is increased, so that the legs can stably support the trailer and prevent the trailer from moving.

[0039] In one embodiment, Figure 1 As shown, a sponge cover is installed on the outer surface of the handle assembly 19.

[0040] By installing a sponge cover on the outer surface of the handle assembly 19, the worker's grip on the handle assembly 19 is enhanced, making it easier for the worker to pull the handle assembly 19, thereby ensuring the normal operation of the restriction structure.

[0041] The above embodiment discloses a folding leg for a trailer, wherein the mounting bracket 28 is welded to the chassis of the trailer, and the base 13 is supported on the ground to play a supporting role. The rotating wheel shaft 22 is manually rotated to drive the first bevel gear 25 to rotate, and the first bevel gear 25 drives the second bevel gear 32 to rotate by mutual engagement; thereby rotating the adjusting screw 21, and the adjusting screw 21 causes the nut 31 to move up and down in one direction through thread transmission, so as to complete the extension or retraction, thereby pushing the inner sleeve assembly 12 to move up and down, so as to achieve the purpose of supporting the trailer by the leg. Pull the handle assembly 19 horizontally to pull its push rod pin 20 out of the adjustment hole of the connecting disc 33, so that the outer sleeve 11 is in a movable state; when the leg is not in use, pull the handle assembly 19 to rotate the outer sleeve 11 90° to reach a folded state, which is convenient for carrying and using the trailer.

[0042] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A folding leg for a trailer, comprising an outer sleeve (11), a base (13) and a U-shaped member assembly (16), wherein the inner sleeve assembly (12) is slidably connected to the inner sleeve assembly (12) inside the outer sleeve (11), a U-shaped connecting member is fixedly installed at the middle position of the upper end of the base (13), the inner sleeve assembly (12) and the U-shaped connecting member are matched and connected by a hexagonal head bolt (14) and a nylon locking nut (15), a driving frame (17) is fixedly installed on the upper end of the outer sleeve (11), the upper end of the driving frame (17) is fixedly connected to an upper sleeve (29), the U-shaped member assembly (16) is installed on the outside of the upper sleeve (29), a mounting bracket (28) is arranged on the upper end of the U-shaped member assembly (16), and the U-shaped member assembly (16) and the mounting bracket (28) are connected by a hexagonal head bolt (14) and a nylon locking nut (15); It is characterized in that It also includes an adjustment structure, which is arranged inside the outer sleeve (11) and the driving frame (17) and is used to adjust the length of the legs; A movable structure is provided at the connection between the upper sleeve (29) and the U-shaped member assembly (16) and is used for folding and stowing the supporting legs.

2. A folding leg for a trailer according to claim 1, characterized in that: The adjustment structure comprises a nut (31), the nut (31) being fixedly mounted on the top end of the inner sleeve assembly (12), the nut (31) being internally threadedly connected to an adjustment screw (21), a bearing (23) being mounted on the outer side wall of the adjustment screw (21), a flat washer (24) being mounted on the bottom of the bearing (23), and a drive unit being fixedly mounted on the upper end of the adjustment screw (21).

3. A folding leg for a trailer according to claim 2, characterized in that: The driving unit comprises a second bevel gear (32), the second bevel gear (32) being fixedly mounted on the top end of the adjusting screw, the second bevel gear (32) being located inside the driving frame (17), the second bevel gear (32) being meshedly connected to the first bevel gear (25), and one end of the first bevel gear (25) extending to the front end of the driving frame (17) and fixedly connected to the rotating wheel shaft (22).

4. A folding leg for a trailer according to claim 1, characterized in that: The movable structure comprises a connecting disc (33), the connecting disc (33) being fixedly mounted on the front end of an upper sleeve (29), the connecting disc (33), the U-shaped component assembly (16) and the upper sleeve (29) being cooperatively connected at a middle position of the connecting disc (33) via a hexagonal bolt (14) and a nylon locking nut (15), the upper sleeve (29) being rotatably connected to an outer side wall of the hexagonal bolt (14), a plurality of adjustment holes being formed at the front end of the connecting disc (33), and a limiting unit being mounted at the front end of the U-shaped component assembly (16).

5. A folding leg for a trailer according to claim 4, characterized in that: The limiting unit comprises a handle assembly (19), wherein the handle assembly (19) is mounted at the front end of the U-shaped member assembly (16), one end of the handle assembly (19) is fixedly connected to a connecting plate, an elastic cylindrical pin (30) is fixedly connected to the middle position of the connecting plate, a through hole is symmetrically provided at the rear end of the connecting plate, a movable sleeve corresponding to the through hole is fixedly mounted at the front end of the U-shaped member assembly (16), a push rod pin shaft (20) is slidably connected to the inside of the movable sleeve, one end of the push rod pin shaft (20) is fixedly connected to a connecting rod, the connecting rod extends between the connecting plate and the handle assembly (19), a hanging ring (27) is mounted at one end of the connecting rod away from the push rod pin shaft (20), a return spring (18) is arranged outside the connecting rod, and one end of the return spring (18) is fixedly connected to the inner wall of the movable sleeve.

6. A folding leg for a trailer according to claim 1, characterized in that: Plastic square plugs (26) are installed at both left and right ends of the driving frame (17).

7. A folding leg for a trailer according to claim 1, characterized in that: The bottom end of the base (13) is provided with an anti-slip layer.

8. A folding leg for a trailer according to claim 5, characterized in that: A sponge sleeve is installed on the outer surface of the handle assembly (19).

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