90-degree or 180-degree brake positioning trundle of goods shelf cart
By designing 90-degree or 180-degree brake positioning casters, the limit structure of locking discs and locking plates is used to solve the problem of disturbance of the universal wheel at the bottom of the shelf cart, and the stable movement and operation controllability of the shelf cart in the two axes directions are achieved.
Patent Information
- Application Number
- CN202421674795.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-16
- Publication Date
- 2025-05-09
- Estimated Expiration
- 2034-07-16
AI Technical Summary
When universal wheels are installed at the bottom of the shelf cart, disturbances will occur when the casters push on the length facade, width facade and main movement direction, resulting in poor controllability and laborious operation.
A 90-degree or 180-degree brake positioning castor is designed. Through the combination of caster bracket, steering switching mechanism and roller, the limiting structure of the locking disc and locking card plate is used to limit the rotation angle between the roller and the bottom plate, and reduce disturbance of the universal castor.
Through the design of the limit structure, the stable movement of the shelf cart in the two axes is achieved, the disturbance of the universal casters is reduced, and the controllability of operation is improved.
Smart Images
Figure CN222845108U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of casters, in particular to a 90-degree or 180-degree brake positioning caster for a shelf cart. Background Art
[0002] Compared with common carts, shelf carts have higher requirements on carrying quality. Some of the bottom casters are universal wheels, which will cause disturbances when the casters are pushed on the length facade, width facade, and moved in the main moving direction. The operation is poorly controllable and laborious. The above problems are particularly obvious when transferring large mass goods. Utility Model Content
[0003] The utility model aims to provide a 90-degree or 180-degree brake positioning caster for a shelf trolley in order to solve the problems that when a shelf trolley with universal wheels at the bottom is pushed in the length facade, the width facade and the main moving direction, the casters will be disturbed, the operation controllability is poor and the operation is laborious.
[0004] In order to achieve the above purpose, the utility model adopts the following technical solution: a 90-degree or 180-degree brake positioning caster for a shelf cart, comprising:
[0005] A caster bracket, the top of which is rotatably connected to a mounting plate via a connecting seat, and the mounting plate is assembled on the bottom plate of the shelf cart via bolts;
[0006] A steering switching mechanism, comprising a locking toothed disc arranged on the connecting seat and a locking mechanism movably arranged on the bottom plate, wherein two blocks are arranged on the locking toothed disc, and the angle formed by the axes of the two blocks is 90° or 180°;
[0007] The roller is rotatably connected to the caster bracket via a wheel axle.
[0008] As a further description of the above technical solution:
[0009] The connecting seat is a bearing seat, which includes a bottom shell circumferentially positioned and assembled on the caster bracket, a top shell fixed in the middle of the mounting plate, and a ball movably arranged between the bottom shell and the top shell.
[0010] As a further description of the above technical solution:
[0011] The locking mechanism includes a locking card plate inserted through the through hole of the base plate, a spring seat extending from the base plate, and a return spring. The locking card plate is rotatably assembled on the side of the spring seat by means of bolts, and a hook at the end of the return spring connects the locking card plate and the end of the spring seat.
[0012] As a further description of the above technical solution:
[0013] The end surface of the bottom plate is also provided with a guide side plate on one side of the locking clamping plate.
[0014] As a further description of the above technical solution:
[0015] The clamping block inside the locking clamping plate is located on the moving track of the stopper.
[0016] As a further description of the above technical solution:
[0017] The locking toothed disc is provided with a bayonet corresponding to the clamping block at the inner side of the stopper.
[0018] In summary, due to the adoption of the above technical solution, the utility model has the following advantages compared with the prior art:
[0019] Beneficial effects:
[0020] This caster is used for shelf carts. The baffle plate cooperates with the locking mechanism to limit the rotation angle of the roller and the bottom plate, so that the shelf cart can be adjusted to 90° or 180°. When the shelf cart is pushed in the two axis directions, that is, the length elevation and the width elevation, the baffle plate is limited to cooperate with the locking tooth plate and the locking card plate to reduce the disturbance of the universal caster, achieve stable movement, and make the caster in the main moving direction of the shelf cart more controllable. The locking tooth plate is stamped and formed as a whole, which is convenient for mass production. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.
[0022] Figure 1 A schematic diagram of the partial assembly structure of a 90-degree brake positioning caster for a shelf cart Figure 1 .
[0023] Figure 2 A schematic diagram of the partial assembly structure of a 90-degree brake positioning caster for a shelf cart Figure 2 .
[0024] Figure 3 This is a schematic diagram of the disassembled structure of a 90-degree brake positioning caster (rollers and axles are hidden) of a shelf cart.
[0025] Figure 4 The present invention is a structural schematic diagram of the connection structure between the bottom shell and the locking toothed disc of a 180-degree brake positioning caster of a shelf cart.
[0026] Legend:
[0027] 1. caster bracket; 2. roller; 3. axle; 4. mounting plate; 5. connecting seat; 51. bottom shell; 52. top shell; 53. ball bearing; 6. locking tooth plate; 61. stopper; 62. bayonet; 7. locking mechanism; 71. guide side plate; 72. spring seat; 73. locking clamping plate; 731. clamping block; 74. bolt; 75. reset spring; 10. bottom plate; 101. through hole. DETAILED DESCRIPTION
[0028] 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 of 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.
[0029] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.
[0030] See also Figure 1-4 The utility model provides a technical solution: a 90-degree or 180-degree brake positioning caster for a shelf cart, comprising:
[0031] The top of the caster bracket 1 is rotatably connected to a mounting plate 4 via a connecting seat 5, and the mounting plate 4 is assembled on the bottom plate 10 of the shelf cart via bolts;
[0032] The steering switching mechanism comprises a locking toothed disc 6 arranged on the connecting seat 5 and a locking mechanism 7 movably arranged on the bottom plate 10. The locking toothed disc 6 is provided with two blocks 61, and the angle formed by the axes of the two blocks 61 is 90° or 180°. In addition, the locking toothed disc 6 is integrally formed by one-time stamping, which is convenient for mass production.
[0033] The roller 2 is rotatably connected to the caster bracket 1 via a wheel axle 3 .
[0034] This caster is used for a shelf cart. The baffle plate 61 cooperates with the locking mechanism 7 to limit the rotation angle of the roller 2 and the bottom plate 10, so that the shelf cart can be adjusted to a 90° angle. When the shelf cart is pushed in the two axis directions, i.e., the length facade and the width facade, this design reduces the disturbance of the universal caster through the limitation of the baffle plate 61, achieves stable movement, and makes the caster more controllable in the main moving direction of the shelf cart. Of course, the angle formed by the axes of the two baffle plates can also be designed to be 180°, so that the caster can change from unilateral movement of the shelf cart within a 90° range of motion to bilateral movement of the shelf cart within a 180° range of motion. The specific structure of the locking tooth plate 6 is as follows: Figure 4 shown.
[0035] The connecting seat 5 is a bearing seat, which includes a bottom shell 51 circumferentially positioned and assembled on the caster bracket 1, a top shell 52 fixed in the middle of the mounting plate 4, and a ball 53 movably arranged between the bottom shell 51 and the top shell 52, so as to realize smooth adjustment of the overall moving direction of the shelf cart by the caster.
[0036] The locking mechanism 7 includes a locking card plate 73 passing through the through hole 101 of the base plate 10, a spring seat 72 extending from the base plate 10, and a return spring 75. The locking card plate 73 is rotatably assembled on the side of the spring seat 72 by a bolt 74, and the hook at the end of the return spring 75 connects the locking card plate 73 and the end of the spring seat 72.
[0037] The end surface of the bottom plate 10 is further provided with a guide side plate 71 on one side of the locking clamping plate 73 .
[0038] The clamping block 731 inside the locking clamping plate 73 is located on the moving track of the stopper 61 .
[0039] The locking toothed disc 6 is provided with a card 62 corresponding to the card block 731 on the inner side of the stopper 61 .
[0040] When it is necessary to orient the caster, the locking card plate 73 is pushed so that it is guided by the guide side plate 71 and the spring seat 72, and rotates stably along the bolt 74, and the block 731 is inserted into the card 62, and the locking card plate 73 is clamped and positioned in the spring seat 72 and the through hole 101, so that the caster bracket 1 and the shelf trolley are locked and positioned; when it is necessary to rotate the caster within a range of 90° or 180° or to adjust the direction of the shelf trolley, the locking card plate 73 is pushed back so that the reset tension spring 75 drives the locking card plate 73 to reset, and then the locking card plate 73 is pushed in the opposite direction so that the block 731 moves to the moving track or outside of the baffle 61, and then the spring seat 72 and the through hole 101 cooperate with the concave and convex clamping structure on the surface of the locking card plate 73 to realize the structural positioning of the locking card plate 73.
[0041] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.
Claims
1. A 90-degree or 180-degree brake positioning caster for a shelf cart, characterized in that: include: A caster bracket, the top of which is rotatably connected to a mounting plate via a connecting seat, and the mounting plate is assembled on the bottom plate of the shelf cart via bolts; The steering switching mechanism comprises a locking toothed disc arranged on the connecting seat and a locking mechanism movably arranged on the bottom plate, wherein two blocks are arranged on the locking toothed disc, and the angle formed by the axes of the two blocks is 90° or 180°: The roller is rotatably connected to the caster bracket via a wheel axle.
2. The 90-degree or 180-degree brake positioning caster of a shelf cart according to claim 1, characterized in that: The connecting seat is a bearing seat, which includes a bottom shell circumferentially positioned and assembled on the caster bracket, a top shell fixed in the middle of the mounting plate, and a ball movably arranged between the bottom shell and the top shell.
3. The 90-degree or 180-degree brake positioning caster of a shelf cart according to claim 1, characterized in that: The locking mechanism includes a locking card plate inserted through the through hole of the base plate, a spring seat extending from the base plate, and a return spring. The locking card plate is rotatably assembled on the side of the spring seat by means of bolts, and a hook at the end of the return spring connects the locking card plate and the end of the spring seat.
4. The 90-degree or 180-degree brake positioning caster of a shelf cart according to claim 3, characterized in that: The end surface of the bottom plate is also provided with a guide side plate on one side of the locking clamping plate.
5. The 90-degree or 180-degree brake positioning caster of a shelf cart according to claim 3, characterized in that: The clamping block inside the locking clamping plate is located on the moving track of the stopper.
6. The 90-degree or 180-degree brake positioning caster of a shelf cart according to claim 5, characterized in that: The locking toothed disc is provided with a bayonet corresponding to the clamping block at the inner side of the stopper.