Upright universal wheel
By designing the joystick and groove locking mechanism of the upright universal wheel, the problem of difficulty in starting the existing eccentric universal wheel under large loads is solved, and the direction of flexible adjustment and easy operation during large loads is achieved, which improves the universal direction. The wheel is easy to use.
Patent Information
- Application Number
- CN202421175484.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-28
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2034-05-28
AI Technical Summary
The existing eccentric universal wheels are difficult to flexibly adjust the movement direction under large loads, resulting in difficulty in starting and inconvenient pushing.
An upright universal wheel is designed, using joystick and slot locking mechanism to achieve 360° rotation and direction locking of casters. Through the coordination of the locking tongue and slot locking, the direction locking and adjustment are achieved using limit marbles, combined with U-shaped control The design of the frame and curved locking tongue simplifies operation and increases flexibility.
It realizes flexible adjustments in front, back, left and right directions during large loads, simplifies operations, reduces the difficulty of pushing the transport platform, and makes the universal wheel more convenient when used.
Smart Images
Figure CN222246710U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a universal wheel, in particular to an upright universal wheel. Background Art
[0002] As is known, casters are often used in the process of storage and transportation and platform debugging, as shown in the attached Figure 1 As shown, in order to flexibly adjust the movement direction of the transfer platform 1, the caster is designed to be an eccentric universal caster 2. This eccentric universal caster 2 allows the transfer platform 1 to adjust its direction according to the needs of the movement direction during the pushing process, and due to its eccentric design, it maintains a certain stability in the required movement direction; but this eccentric universal wheel 2 also brings a problem during use. If the four legs of the vehicle are equipped with eccentric universal wheels 2, the directions of the four eccentric universal wheels are in a free state in the initial state, and each has its own random direction; when the platform is heavy, for example, more than one ton, Since the eccentric universal wheels 2 are in different directions, it is very difficult to push the transfer platform carried by these eccentric universal wheels 2 from a stationary state. A large thrust is required to make the directions of the eccentric universal wheels 2 straight and consistent. When the directions of the eccentric universal wheels 2 are straight and consistent, the transfer platform 1 can be easily pushed. Since it is impossible to flexibly adjust the position front, back, left and right when there is a large load, it is very inconvenient for users to use, difficult to start, and has a large adjustment radius. Therefore, it has become a basic demand of technicians in this field to propose an upright universal wheel that is easy for users to use and can be easily pushed by vehicles. Summary of the invention
[0003] In order to overcome the deficiencies in the background technology, the utility model discloses an upright universal wheel.
[0004] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions:
[0005] An upright universal wheel comprises a mounting plate and a bottom plate fixed at the four corners under a transfer platform, a rotatably connected caster frame is provided on a bearing seat under the mounting plate, a caster is connected inside the caster frame, an operating frame is hingedly connected to the outside of both sides of the caster frame, a control rod is fixed to the rear end of the operating frame, the bottom plate is arranged in a square plate shape, a square hole is provided in the middle of the square plate, grooves connected to the square hole are provided in the middle of two adjacent sides of the square plate, a locking groove A and a locking groove B are respectively provided in the middle of the inner surfaces of the other two adjacent sides of the square plate, a locking tongue is extended on the operating frame, the locking tongue corresponds to the locking groove A or the locking groove B up and down, the square plate is arranged outside the bearing seat through the square hole, and is fixed to the bottom of the mounting plate by bolts at the four corners.
[0006] The upright universal wheel has a concave ring below the bearing seat, a turntable bearing is arranged inside the concave ring, the concave ring is fixedly connected to the outer ring of the turntable bearing, and the inner ring of the turntable bearing is fixedly connected to the bottom surface of the caster frame.
[0007] The upright universal wheel and the caster frame include an upper circular section and extension plates extending on both sides of the circular section, corresponding mounting holes are provided at the lower parts of the two extension plates, a rotating shaft is rotatably connected in the center hole of the caster, and the two ends of the rotating shaft are respectively fixed in the mounting holes at the lower parts of the two extension plates.
[0008] The upright universal wheel has a U-shaped operating frame, and both side walls are hinged to the lower outside of the two extension plates of the caster frame through a hinge shaft. The locking tongue is arranged in an arc shape and extends to the upper edge of the connecting plate between the two side walls.
[0009] The upright universal wheel is provided with corresponding concave holes on both side surfaces of the lock slot A and the lock slot B, and a spring is fixed in the concave hole. The outer end of the spring is fixed with a limiting marble. When the direction is locked, the limiting marble limits the lock tongue in the lock slot A or the lock slot B.
[0010] The upright universal wheel also includes a foot brake assembly arranged on the caster frame, the foot brake assembly includes a mounting plate and a brake plate, two mounting plates are provided, which are respectively fixed on the upper inner surfaces of the two extension plates of the caster frame, and the brake plate is hinged between the two mounting plates through a hinge shaft.
[0011] Due to the adoption of the above technical solution, the utility model has the following beneficial effects:
[0012] The upright universal wheel described in the utility model can realize 360° rotation in situ by rotating the operating lever, and the locking tongue is pressed into the locking groove A or the locking groove B by lifting the operating lever, and the limiting marbles on the two side surfaces of the locking groove A or the locking groove B are pressed tightly against the two side surfaces of the locking tongue, thereby locking the walking direction of the caster; the utility model has a simple and compact structure and is easy to operate, and realizes the purpose of being able to flexibly adjust the walking direction front, back, left, and right under heavy load. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 The utility model is a structural schematic diagram of an eccentric universal wheel in the prior art.
[0014] Figure 2 It is a structural schematic diagram of the utility model.
[0015] Figure 3 It is a schematic diagram of the utility model in the lock slot A.
[0016] Figure 4 It is a schematic diagram of the utility model in the lock slot B.
[0017] In the figure: 1. transfer platform; 2. eccentric universal wheel; 3. platform; 4. control frame; 5. control lever; 6. bottom plate; 7. lock tongue; 8. lock slot A; 9. mounting plate; 10. lock slot B; 11. bearing seat; 12. limit marble; 13. caster frame; 14. brake plate; 15. caster; 16. mounting plate. DETAILED DESCRIPTION
[0018] The present invention can be explained in detail through the following embodiments. The purpose of disclosing the present invention is to protect all technical improvements within the scope of the present invention.
[0019] Combined with Figure 2-4 The upright universal wheel comprises a mounting plate 9 and a bottom plate 6 fixed at the four corners below the transfer platform 1, a rotatably connected caster frame 13 is provided on the bearing seat 11 below the mounting plate 9, a caster 15 is connected inside the caster frame 13, the caster frame 13 comprises an upper circular segment and an extension plate extending on both sides of the circular segment, corresponding mounting holes are provided at the lower parts of the two extension plates, a rotating shaft is rotatably connected in the center hole of the caster 15, and the two ends of the rotating shaft are respectively fixed in the mounting holes at the lower parts of the two extension plates; a control frame 4 is hingedly connected to the outside on both sides of the caster frame 13, a control rod 5 is fixed to the rear end of the control frame 4, and the bottom plate 6 is provided with a The square plate is arranged in a square plate shape, a square hole is arranged in the middle of the square plate, grooves connected to the square hole are arranged in the middle of the two adjacent sides of the square plate, and lock grooves A8 and lock grooves B10 are arranged in the middle of the inner surfaces of the other two adjacent sides of the square plate, respectively. A lock tongue 7 extends from the operating frame 4, and the lock tongue 7 corresponds to the lock groove A8 or the lock groove B10 up and down. The square plate is arranged on the outside of the bearing seat 11 through the square hole, and is fixed to the bottom of the mounting plate 9 by bolts at the four corners; a concave ring is arranged under the bearing seat 11, and a slewing bearing is arranged in the concave ring, the concave ring is fixedly connected to the outer ring of the slewing bearing, and the inner ring of the slewing bearing is fixedly connected to the bottom surface of the caster frame 13.
[0020] Specifically, the operating frame 4 is provided with a U shape, and its two side walls are hinged to the lower outside of the two extension plates of the caster frame 13 through a hinge axis, and the lock tongue 7 is set to an arc shape, extending at the upper edge of the connecting plate between the two side walls; concave holes are correspondingly provided on the two side surfaces of the lock groove A8 and the lock groove B10, and springs are fixed in the concave holes. The outer ends of the springs are fixed with limiting marbles 12. When the direction is locked, the limiting marbles 12 limit the lock tongue 7 in the lock groove A8 or the lock groove B10; when in use, rotating the operating frame 4 can drive the caster frame 13 to rotate, thereby driving the caster 15 to rotate. When it is necessary to move forward and backward or left and right, after rotating the direction of the caster, lift the operating lever 5 upwards, and the lock tongue 7 on the operating frame 4 is pressed into the lock groove A8 or the lock groove B10.
[0021] Specifically, it also includes a foot brake assembly arranged on the caster frame 13, the foot brake assembly includes a mounting plate 16 and a brake plate 14, the mounting plates 16 are provided with two pieces, which are respectively fixed on the upper inner surfaces of the two extension plates of the caster frame 13, and the brake plate 14 is hinged between the two mounting plates 16 through a hinge shaft; the foot brake assembly is used to control the start and stop of the caster. When in use, the brake plate 14 is pressed down so that the inner end of the brake plate 14 contacts the caster 15, and the caster is controlled to stop moving.
[0022] In the implementation of the upright universal wheel of the utility model, the locking tongue 7 falls in the locking groove A8 as the front-to-back direction, and the locking tongue 7 falls in the locking groove B10 as the left-to-right direction. When in use, the operating lever 5 can be rotated to drive the caster frame 13 to rotate 360 degrees in place, thereby driving the caster 15 to rotate. Figure 3 As shown, the operating lever 5 is rotated to drive the caster frame 13 to rotate, and the operating lever 5 is lifted to drop the lock tongue 7 into the lock groove A8. When the lock tongue 7 contacts the limiting marbles 12 on the concave holes on both sides of the lock groove A8, the spring in the compressed concave hole retracts, so that the limiting marbles 12 retreat into the concave hole. When the upper surface of the lock tongue 7 contacts the bottom surface of the lock groove A8, the two side surfaces of the lock tongue 7 no longer contact the limiting marbles 12, and the elastic force of the spring pushes the limiting marbles 12 out halfway, thereby pressing the lock tongue in the lock groove A8. 7 is limited, that is, the universal wheel can drive the rotating platform 1 to move forward and backward; when braking is required, the brake plate 14 is pressed down to press the brake plate 14 on the caster 15 to complete the braking action; when the caster 15 needs to move in the left and right directions, the operating lever 5 is pressed down to lift the lock tongue 7 from the lock groove A8. During the lifting process, the limiting marble 12 is compressed and then restored to its original position. After rotating the operating lever 5 90 degrees, the operating lever 5 is lifted up to drop the lock tongue 7 into the lock groove B10, as shown in the attached figure. Figure 4 As shown, the universal wheel can drive the rotating platform 1 to move to the left and right directions, and the above braking steps can be repeated when braking is needed; by straightening the direction of the casters at the bottom of the transfer platform 1, the transfer platform 1 can be pushed easily and effortlessly.
[0023] The parts not described in detail in this utility model are prior art.
[0024] The embodiments selected in this article for the purpose of disclosing the invention of the utility model are currently considered to be suitable, but it should be understood that the utility model is intended to include all changes and improvements of the embodiments that belong to the scope of the present concept and utility model.
Claims
1. An upright universal wheel, comprising a mounting plate and a bottom plate fixed at the four corners below a transfer platform, characterized in that: A rotatably connected caster frame is provided on the bearing seat below the mounting plate, a caster is connected inside the caster frame, an operating frame is hingedly connected to the outside of both sides of the caster frame, an operating lever is fixed to the rear end of the operating frame, the bottom plate is arranged in a square plate shape, a square hole is arranged in the middle of the square plate, grooves connected to the square hole are arranged in the middle of two adjacent sides of the square plate, a lock groove A and a lock groove B are respectively arranged in the middle of the inner surfaces of the other two adjacent sides of the square plate, a lock tongue is extended from the operating frame, the lock tongue corresponds to the lock groove A or the lock groove B up and down, the square plate is arranged on the outside of the bearing seat through the square hole, and is fixed to the bottom of the mounting plate by bolts at the four corners.
2. The vertical universal wheel according to claim 1, characterized in that: A concave ring is provided under the bearing seat, a slewing bearing is provided in the concave ring, the concave ring is fixedly connected to the outer ring of the slewing bearing, and the inner ring of the slewing bearing is fixedly connected to the bottom surface of the caster frame.
3. The vertical universal wheel according to claim 1, characterized in that: The caster frame includes an upper circular section and extension plates extending on both sides of the circular section. Corresponding mounting holes are provided at the lower parts of the two extension plates. A rotating shaft is rotatably connected in the center hole of the caster, and both ends of the rotating shaft are respectively fixed in the mounting holes at the lower parts of the two extension plates.
4. The vertical universal wheel according to claim 1, characterized in that: The operating frame is arranged in a U shape, and both side walls thereof are hinged to the lower outer part of the two extension plates of the caster frame through a hinge shaft, and the locking tongue is arranged in an arc shape, extending to the upper edge of the connecting plate between the two side walls.
5. The vertical universal wheel according to claim 1, characterized in that: There are corresponding concave holes on both side surfaces of lock slot A and lock slot B, and springs are fixed in the concave holes. The outer ends of the springs are fixed with limiting marbles. When locking the direction, the limiting marbles limit the lock tongue in lock slot A or lock slot B.
6. The vertical universal wheel according to claim 1, characterized in that: It also includes a foot brake assembly arranged on the caster frame, which includes a mounting plate and a brake plate. Two mounting plates are provided and are respectively fixed on the upper inner surfaces of the two extension plates of the caster frame. The brake plate is hinged between the two mounting plates through a hinge shaft.