Universal wheel with adjustable height

Abstract

The utility model discloses a height-adjustable universal wheel, which belongs to the technical field of universal wheels and comprises a top plate connected with an external object and a universal wheel component positioned at the lower part of the top plate, a driving gear is rotationally connected to the top plate, an adjusting hole is formed in the driving gear, and a plurality of driven gears are meshed with the exterior of the driving gear; the driven gear is connected with a bolt, and the bolt penetrates through the top plate and is rotationally connected with the top plate. A protruding ring is arranged outside the bolt and abuts against the bottom of the top plate. A fixing plate is arranged at the bottom of the top plate, a nut is fixedly arranged at the bottom of the fixing plate, the nut is in threaded connection with the bolt, and the fixing plate is connected with the universal wheel assembly. The height of the universal wheel can be adjusted, the height of an object installed on the universal wheel can be adjusted, and a user can conveniently adjust the height of the universal wheel according to use requirements.

Description

Technical Field

[0001] The utility model relates to the technical field of universal wheels, in particular to a universal wheel with adjustable height. Background Art

[0002] Casters are a general term for movable casters and fixed casters. Universal wheels are so-called movable casters, and the bracket installed on the caster wheel can rotate 360 ​​degrees horizontally under dynamic or static loads.

[0003] At present, the universal wheel structures produced on the market can only rotate 360 ​​degrees in the horizontal direction according to demand, but cannot adjust their own height according to the user's use needs, and thus cannot adjust the height of the object installed on the universal wheel. Utility Model Content

[0004] The utility model aims at the deficiencies in the prior art and provides a universal wheel with adjustable height, which can realize the adjustment of the height of the universal wheel itself and the height of the object installed on the universal wheel, so that the user can adjust the height of the universal wheel according to the use requirements.

[0005] The technical solution of the utility model to solve the above technical problems is as follows:

[0006] A universal wheel with adjustable height comprises a top plate connected to an external object, and a universal wheel assembly located at the lower part of the top plate; a driving gear is rotatably connected to the top plate, an adjustment hole is provided on the driving gear, and a plurality of driven gears are meshed on the outside of the driving gear; a bolt is connected to the driven gear, and the bolt passes through the top plate and is rotatably connected to the top plate; a convex ring is provided on the outside of the bolt, and the convex ring abuts against the bottom of the top plate; a fixing plate is provided at the bottom of the top plate, a nut is fixedly provided at the bottom of the fixing plate, the nut is threadedly connected to the bolt, and the fixing plate is connected to the universal wheel assembly.

[0007] The beneficial effect of adopting the above technical solution is that by adjusting the adjustment hole on the driving gear, the driving gear is rotated, the driving gear drives the driven gear meshing with it to rotate, and the driven gear drives the bolt to rotate. Since the fixing plate connected to the universal wheel assembly and the nut threaded on the bolt are fixedly connected, the bolt can be lifted and lowered while rotating. During the lifting and lowering movement of the bolt, the top plate can be driven to rise or fall under the contact of the convex ring or the driven gear, thereby realizing the adjustment of the height of the universal wheel itself and the height of the object installed on the universal wheel, so that the user can adjust the height of the universal wheel according to the use requirements.

[0008] Furthermore, a limiting plate is provided on the top of the driven gear, and the bottom of the limiting plate abuts against the top of the driving gear.

[0009] The beneficial effect of adopting the above technical solution is that the limiting plate is located on the top of the driving gear and can be used to fix the driving gear, limit the driving gear, and prevent the driving gear from being displaced.

[0010] Furthermore, the position of the universal wheel assembly corresponds to that of the driving gear, and there are four driven gears in total, which are grouped in pairs. The two groups of driven gears are respectively located on both sides of the driving gear, and the two groups of driven gears are respectively located on both sides of the universal wheel assembly.

[0011] The beneficial effect of adopting the above technical solution is that the force on the universal wheel is made more balanced, thereby improving the stability of the lifting and lowering of the universal wheel.

[0012] Furthermore, the convex ring is integrally connected with the bolt.

[0013] The beneficial effect of adopting the above technical solution is that the strength and deformation resistance of the convex ring can be guaranteed.

[0014] Furthermore, the positions of the convex ring and the fixing plate correspond to each other, and the convex ring and the fixing plate are rotatably connected.

[0015] The beneficial effect of adopting the above technical solution is that, while the convex ring abuts against the top plate, the fixed plate can also support the top plate.

[0016] Furthermore, the universal wheel assembly includes a bracket and a wheel, the bracket is connected to a fixing plate, and the wheel is mounted on the bracket.

[0017] Furthermore, the wheels are polyurethane wheels.

[0018] The beneficial effect of adopting the above technical solution is that the wheels are made of polyurethane material, which has multiple characteristics such as vibration absorption, elasticity, friction resistance, corrosion resistance, etc., and has a certain protective effect on contact with the ground.

[0019] Furthermore, the adjustment hole is a hexagonal bolt hole.

[0020] The beneficial effect of adopting the above technical solution is that the hexagonal bolt can be inserted into the adjustment hole to adjust the driving gear to make the driving gear rotate.

[0021] Furthermore, a mounting hole for connecting with an external object is provided on the top plate.

[0022] The beneficial effect of adopting the above technical solution is that it is easy to connect the universal wheel with an external object. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0024] Figure 2It is a schematic cross-sectional view of the overall structure of the utility model.

[0025] Explanation of the accompanying drawings: 1. top plate; 2. universal wheel assembly; 21. bracket; 22. wheel; 3. driving gear; 4. adjustment hole; 5. driven gear; 6. bolt; 7. convex ring; 8. fixing plate; 9. nut; 10. limit plate; 11. mounting hole. DETAILED DESCRIPTION

[0026] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0027] The utility model embodiment discloses a universal wheel with adjustable height.

[0028] Reference Figure 1 and Figure 2 A universal wheel with adjustable height comprises a top plate 1 connected to an external object, and a universal wheel assembly 2 located at the lower part of the top plate 1, wherein a driving gear 3 and a plurality of driven gears 5 are provided on the top plate 1, and the driving gear 3 is adjusted, and the top plate 1 is driven to rise or fall through the plurality of driven gears 5, thereby realizing the adjustment of the height of the universal wheel itself and the adjustment of the height of the object mounted on the universal wheel, so that the user can adjust the height of the universal wheel according to the use requirements.

[0029] The four sides of the top plate 1 are provided with mounting holes 11 for connecting with external objects, so as to facilitate the connection of the universal wheel with external objects.

[0030] The driving gear 3 is rotatably connected to the top plate 1, and an adjustment hole 4 is provided on the driving gear 3. The driven gear 5 is meshed with the outside of the driving gear 3. A bolt 6 is fixedly connected to the driven gear 5, and the bolt 6 passes through the top plate 1 and is rotatably connected to the top plate 1; a convex ring 7 is fixedly provided on the outside of the bolt 6, and the convex ring 7 abuts against the bottom of the top plate 1; a fixing plate 8 is provided at the bottom of the top plate 1, and a nut 9 is fixedly provided at the bottom of the fixing plate 8, and the nut 9 is threadedly connected to the bolt 6, and the fixing plate 8 is connected to the universal wheel assembly 2.

[0031] When the user needs to adjust the height of the universal wheel according to usage requirements, the user adjusts the adjustment hole 4 on the driving gear 3 to rotate the driving gear 3, and the driving gear 3 drives the driven gear 5 meshing therewith to rotate, and the driven gear 5 drives the bolt 6 to rotate. Since the fixing plate 8 and the nut 9 are fixedly connected, the bolt 6 can be lifted and lowered while rotating. During the lifting and lowering movement of the bolt 6, the top plate 1 can be driven to rise or fall under the contact of the convex ring 7 or the driven gear 5, thereby realizing the adjustment of the height of the universal wheel itself and the adjustment of the height of the object installed on the universal wheel.

[0032] Specifically, the adjustment hole 4 is a hexagonal bolt hole. By inserting the hexagonal bolt into the adjustment hole 4, the driving gear 3 can be adjusted to make the driving gear 3 rotate.

[0033] A limiting plate 10 is fixedly disposed on the top of the driven gear 5 , and the bottom of the limiting plate 10 abuts against the top of the driving gear 3 , so as to fix the driving gear 3 , limit the driving gear 3 , and prevent the driving gear 3 from displacement.

[0034] The convex ring 7 is integrally connected with the bolt 6, which can ensure the strength and deformation resistance of the convex ring 7. The convex ring 7 corresponds to the position of the fixing plate 8, and the convex ring 7 is rotatably connected with the fixing plate 8, so that the convex ring 7 can abut against the top plate 1 while the fixing plate 8 can also bear the load of the top plate 1.

[0035] The positions of the universal wheel assembly 2 and the driving gear 3 correspond, and there are four driven gears 5 in total, and two of them form a group. The two groups of driven gears 5 are respectively located on both sides of the driving gear 3, and the two groups of driven gears 5 are respectively located on both sides of the universal wheel assembly 2, so that the top plate 1 is subjected to more balanced force during the process of lifting and lowering, thereby improving the stability of the lifting and lowering of the top plate 1.

[0036] The universal wheel assembly 2 includes a bracket 21 and a wheel 22. The bracket 21 is fixedly connected to the fixing plate 8. The wheel 22 is installed on the bracket 21. Specifically, the wheel 22 is a polyurethane wheel. The wheel 22 is made of polyurethane material and has multiple characteristics such as vibration absorption, elasticity, friction resistance, corrosion resistance, etc., and has a certain protective effect on contact with the ground.

[0037] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A height-adjustable universal wheel, comprising a top plate (1) connected to an external object, and a universal wheel assembly (2) located below the top plate (1), characterized in that: A driving gear (3) is rotatably connected to the top plate (1), an adjustment hole (4) is provided on the driving gear (3), and a plurality of driven gears (5) are meshed on the outside of the driving gear (3); a bolt (6) is connected to the driven gear (5), and the bolt (6) passes through the top plate (1) and is rotatably connected to the top plate (1); a convex ring (7) is provided on the outside of the bolt (6), and the convex ring (7) abuts against the bottom of the top plate (1); a fixing plate (8) is provided at the bottom of the top plate (1), and a nut (9) is fixed at the bottom of the fixing plate (8), and the nut (9) is threadedly connected to the bolt (6), and the fixing plate (8) is connected to the universal wheel assembly (2).

2. The height-adjustable universal wheel according to claim 1, characterized in that: A limiting plate (10) is provided on the top of the driven gear (5), and the bottom of the limiting plate (10) abuts against the top of the driving gear (3).

3. The height-adjustable universal wheel according to claim 1, characterized in that: The positions of the universal wheel assembly (2) and the driving gear (3) correspond to each other. There are four driven gears (5) in total, and two of them form a group. The two groups of driven gears (5) are respectively located on both sides of the driving gear (3), and the two groups of driven gears (5) are respectively located on both sides of the universal wheel assembly (2).

4. The height-adjustable universal wheel according to claim 1, characterized in that: The convex ring (7) is integrally connected with the bolt (6).

5. The height-adjustable universal wheel according to claim 1 or 4, characterized in that: The positions of the convex ring (7) and the fixing plate (8) correspond, and the convex ring (7) and the fixing plate (8) are rotatably connected.

6. The height-adjustable universal wheel according to claim 1, characterized in that: The universal wheel assembly (2) comprises a bracket (21) and a wheel (22); the bracket (21) is connected to a fixing plate (8), and the wheel (22) is mounted on the bracket (21).

7. The height-adjustable universal wheel according to claim 6, characterized in that: The wheel (22) is a polyurethane wheel.

8. The height-adjustable universal wheel according to claim 1, characterized in that: The adjustment hole (4) is a hexagonal bolt hole.

9. The height-adjustable universal wheel according to claim 1, characterized in that: The top plate (1) is provided with a mounting hole (11) for connecting with an external object.

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