Trundle capable of being quickly disassembled and assembled

Abstract

The trundle comprises a sleeve rod and a supporting plate, a mounting plate is fixedly mounted at the top of the sleeve rod, and a moving rod is connected to the inner surface wall of the sleeve rod in a sliding mode. According to the device, a driving disc is rotated, a sliding ring at the top of the driving disc is in sliding fit with the bottom of a sleeve rod through an annular clamping groove, so that the vertical position of the driving disc is kept relatively unchanged, the inner surface wall of the driving disc is screwed with a moving rod, and a sliding block on the moving rod synchronously slides along a sliding groove, so that the moving rod can drive a moving wheel to move in the vertical direction; therefore, the adjustable range of the moving wheel in the vertical direction is expanded, meanwhile, convenience of the adjusting process is guaranteed, overall separation of the trundle can be achieved by separating the fastening piece connected between the mounting plate and the external bearing piece, independent separation of the moving wheel can be achieved by screwing off the locking rod, and the service life of the trundle is prolonged. Therefore, different disassembly and assembly requirements of the trundle are met, and the rapidness of the disassembly and assembly process is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of casters, in particular to a caster which can be quickly disassembled and assembled. Background Art

[0002] Casters are a general term, including movable casters and fixed casters; movable casters are what we call universal wheels, and their structure allows 360-degree rotation; fixed casters are also called fixed casters, which have no rotating structure and cannot turn; currently casters are widely used in trolleys, mobile scaffolding, workshop trucks, etc. Some technical fields require that the casters of tooling can be easily and repeatedly installed and disassembled, and have stable support.

[0003] Chinese patent publication number CN215705466U, publication time 20220201, discloses a caster that can be quickly disassembled and assembled, including a moving wheel, side plates are respectively connected on both sides of the moving wheel, a connecting shaft is connected between the side plates, the moving wheel is rotatably connected to the connecting shaft, a connecting plate is connected to the top of the side plate, a support rod is connected to the top of the connecting plate, the other end of the support rod is rotatably connected to a support plate, a shock absorbing device is connected to the top of the support plate, an inner rod is connected to the top of the shock absorbing device, a sleeve rod is connected to the outer shell of the inner rod, a mounting plate is connected to the top of the sleeve rod, a mounting hole is circumferentially connected to the mounting plate, a ratchet is connected to one side of the top of the inner rod, a through hole one is connected on the sleeve rod, and a fixing plate is connected to the end of the through hole one away from the inner rod.

[0004] The existing quick-disassembly casters such as the above-mentioned realize height adjustment and disassembly of the moving rod and the moving wheel through the cooperation of the latch teeth and the ratchet teeth. In the specific implementation process, the disassembly and assembly of the casters are often divided into the disassembly and assembly of the overall casters and the independent disassembly and assembly of the moving wheels. The above-mentioned disassembly and assembly methods are often implemented quickly, and there are gaps between the ratchets, which makes the height adjustment range of the moving wheels relatively limited. Therefore, it is urgent to propose corresponding quick-disassembly casters to solve the above-mentioned problems. Utility Model Content

[0005] The utility model aims to solve the above problems and provides a caster that can be quickly disassembled and assembled.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A quick-detachable caster comprises a sleeve rod and a support plate, wherein a mounting plate is fixedly mounted on the top of the sleeve rod, a moving rod is slidably connected to the inner surface wall of the sleeve rod, a lifting assembly for vertically moving the moving rod is arranged between the moving rod and the bottom of the sleeve rod, a moving wheel is arranged at the bottom of the support plate, a bottom ring is fixedly connected to the inside of the vertical end of the support plate via a locking rod, and a plurality of groups of shock-absorbing assemblies distributed in an annular shape are connected between the bottom ring and the moving rod.

[0008] Preferably, the lifting assembly includes a driving disk, which is snap-connected to the bottom of the sleeve rod, the inner wall of the driving disk is screwed to the outer wall of the moving rod, and a limiting portion for limiting axial deflection of the moving rod is provided between the top of the moving rod and the sleeve rod.

[0009] Preferably, the limiting portion includes a sliding block fixedly connected to the moving rod, and the sliding block is slidably connected to the inner surface wall of the sleeve rod through a vertically arranged sliding groove.

[0010] Preferably, a slip ring is fixedly mounted on the top of the driving disk, and the slip ring is engaged and connected with the bottom of the sleeve rod via an annularly arranged slot.

[0011] Preferably, a convex ring is integrally formed at the bottom of the sleeve rod, a fastening rod is screwedly connected to the inner surface wall of the convex ring, and the open end of the fastening rod abuts against the outer surface wall of the driving disc.

[0012] Preferably, the convex ring and the inner surface wall of the vertical end of the support plate are respectively interference-fitted with a rubber block 1 and a rubber block 2, and the rubber block 1 and the rubber block 2 are respectively abutted against the outer surface wall of the fastening rod and the locking rod.

[0013] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0014] 1. In the present application, the driving disk is rotated, and the slip ring on the top of the driving disk slides with the bottom of the sleeve rod through the annular groove, so that the vertical position of the driving disk remains relatively unchanged, and the inner surface wall of the driving disk is screwed with the moving rod, and the slider on the moving rod slides along the slide groove synchronously, so that the moving rod can drive the moving wheel to move in the vertical direction, thereby expanding the adjustable range of the moving wheel in the vertical direction while ensuring the convenience of the adjustment process, and the caster can be separated as a whole by separating the fasteners connected between the mounting plate and the external receiving part, and the moving wheel can be separated independently by rotating the locking rod, thereby meeting different disassembly and assembly requirements of the caster and ensuring the speed of the disassembly and assembly process.

[0015] 2. In the present application, after the height adjustment of the caster is completed by the driving disk, the fastening rod is rotated, and the fastening rod is screwed and connected with the sleeve rod until the open end of the fastening rod abuts against the outer wall of the vertical end of the driving disk, thereby locking the driving disk through friction. At the same time, the rubber block 1 and the rubber block 2 are respectively inserted into the sleeve rod and the inner wall of the vertical end of the support plate. The rubber block 1 and the rubber block 2 connected by interference fit ensure the stability of their own positions. The rubber block 1 and the rubber block 2 can limit the loosening of the fastening rod and the locking rod through friction, thereby ensuring the stability of the caster. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The overall structure schematic diagram provided according to the embodiment of the utility model is shown;

[0017] Figure 2 A schematic diagram of the bottom ring structure provided according to an embodiment of the utility model is shown;

[0018] Figure 3 A schematic diagram of the structure of a fastening rod provided according to an embodiment of the utility model is shown;

[0019] Figure 4 A schematic diagram of the structure of a slider provided according to an embodiment of the utility model is shown.

[0020] Legend:

[0021] 1. Moving wheel; 2. Support plate; 3. Sleeve rod; 4. Driving plate; 5. Mounting plate; 6. Rubber block 1; 7. Rubber block 2; 8. Locking rod; 9. Bottom ring; 10. Moving rod; 11. Shock absorbing assembly; 12. Sliding block; 13. Slide groove; 14. Convex ring; 15. Slip ring; 16. Fastening rod. DETAILED DESCRIPTION

[0022] 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.

[0023] See also Figure 1-4 , the utility model provides a technical solution:

[0024] A quick-disassembly caster comprises a sleeve rod 3 and a support plate 2, a mounting plate 5 is fixedly mounted on the top of the sleeve rod 3, a moving rod 10 is slidably connected to the inner surface wall of the sleeve rod 3, a lifting assembly for vertically moving the moving rod 10 is arranged between the moving rod 10 and the bottom of the sleeve rod 3, a moving wheel 1 is arranged at the bottom of the support plate 2, a bottom ring 9 is fixedly connected to the vertical end of the support plate 2 through a locking rod 8, and a plurality of groups of shock-absorbing assemblies 11 distributed in an annular shape are connected between the bottom ring 9 and the moving rod 10;

[0025] The driving disk 4 is rotated, and the slip ring 15 on the top of the driving disk 4 slides with the bottom of the sleeve rod 3 through the annular groove, so that the vertical position of the driving disk 4 remains relatively unchanged, and the inner surface wall of the driving disk 4 is screwed with the moving rod 10, and the slider 12 on the moving rod 10 slides synchronously along the slide groove 13, so that the moving rod 10 can drive the moving wheel 1 to move in the vertical direction, thereby expanding the adjustable range of the moving wheel 1 in the vertical direction while ensuring the convenience of the adjustment process, and the caster can be separated as a whole by separating the fasteners connected between the mounting plate 5 and the external receiving part, and the moving wheel 1 can be separated independently by rotating the locking rod 8, so as to adapt to different disassembly and assembly requirements of the caster and ensure the speed of the disassembly and assembly process.

[0026] Specifically, Figure 2 and Figure 4 As shown, the lifting assembly includes a driving disk 4, which is engaged with the bottom of the sleeve rod 3, the inner wall of the driving disk 4 is screwed together with the outer wall of the moving rod 10, and a limiting portion for limiting the axial deflection of the moving rod 10 is provided between the top of the moving rod 10 and the sleeve rod 3, the limiting portion includes a slider 12 fixedly connected to the moving rod 10, the slider 12 is slidably connected to the inner wall of the sleeve rod 3 through a vertically arranged slide groove 13, a slip ring 15 is fixedly installed on the top of the driving disk 4, the slip ring 15 is engaged with the bottom of the sleeve rod 3 through an annular groove, the slip ring 15 at the top of the driving disk 4 is slidably matched with the bottom of the sleeve rod 3 through the annular groove, so that the vertical position of the driving disk 4 remains relatively unchanged, the inner wall of the driving disk 4 is screwed together with the moving rod 10, and the slider 12 on the moving rod 10 slides synchronously along the slide groove 13, so that the moving rod 10 can drive the moving wheel 1 to move in the vertical direction.

[0027] Specifically, Figure 2 and Figure 3 As shown, a convex ring 14 is integrally formed at the bottom of the sleeve rod 3, and a fastening rod 16 is screwed and connected to the inner surface wall of the convex ring 14. The open end of the fastening rod 16 abuts against the outer surface wall of the driving disk 4. The convex ring 14 and the inner surface wall of the vertical end of the support plate 2 are respectively interference-fitted with a rubber block 16 and a rubber block 2 7. The rubber block 16 and the rubber block 2 7 abut against the outer surface wall of the fastening rod 16 and the locking rod 8 respectively. After the height adjustment of the caster 1 is completed by the driving disk 4, the fastening rod 16 is rotated, and the fastening rod 16 and the sleeve rod 3 are rotated. The two ends of the caster 1 are connected until the open end of the fastening rod 16 abuts against the outer wall of the vertical end of the driving disk 4, so that the driving disk 4 is locked by friction. At the same time, the rubber block 1 6 and the rubber block 2 7 are respectively inserted into the inner wall of the vertical end of the sleeve rod 1 and the support plate 2. The rubber block 1 6 and the rubber block 2 7 connected by interference fit ensure the stability of their own positions. The rubber block 1 6 and the rubber block 2 7 can limit the loosening of the fastening rod 16 and the locking rod 8 by friction, thereby ensuring the stability of the caster.

[0028] Working principle: the driving disk 4 is rotated, and the slip ring 15 on the top of the driving disk 4 slides with the bottom of the sleeve rod 3 through the annular groove, so that the vertical position of the driving disk 4 remains relatively unchanged, and the inner surface wall of the driving disk 4 is screwed with the moving rod 10, and the slider 12 on the moving rod 10 slides along the slide groove 13 synchronously, so that the moving rod 10 can drive the moving wheel 1 to move in the vertical direction, thereby expanding the adjustable range of the moving wheel 1 in the vertical direction while ensuring the convenience of the adjustment process, and the caster can be separated as a whole by separating the fasteners connected between the mounting plate 5 and the external receiving part, and the moving wheel 1 can be separated independently by rotating the locking rod 8, so that In order to adapt to different disassembly and assembly requirements of casters and ensure the speed of the disassembly and assembly process, after the height adjustment of the caster 1 is completed by the driving disk 4, the fastening rod 16 is rotated, and the fastening rod 16 is screwed and connected with the sleeve rod 3 until the open end of the fastening rod 16 abuts against the outer wall of the vertical end of the driving disk 4, thereby locking the driving disk 4 through friction. At the same time, the rubber block 1 6 and the rubber block 2 7 are respectively inserted into the inner wall of the vertical end of the sleeve rod 1 and the support plate 2. The rubber block 1 6 and the rubber block 2 7 connected by interference fit ensure the stability of their own positions. The rubber block 1 6 and the rubber block 2 7 can limit the loosening of the fastening rod 16 and the locking rod 8 through friction, thereby ensuring the stability of the caster.

[0029] The above description of the embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A quick-detachable caster, comprising a sleeve rod (3) and a support plate (2), characterized in that: A mounting plate (5) is fixedly mounted on the top of the sleeve rod (3); a moving rod (10) is slidably connected to the inner surface wall of the sleeve rod (3); a lifting assembly for vertically moving the moving rod (10) is arranged between the moving rod (10) and the bottom of the sleeve rod (3); a moving wheel (1) is arranged at the bottom of the support plate (2); a bottom ring (9) is fixedly connected to the inside of the vertical end of the support plate (2) via a locking rod (8); and a plurality of groups of shock absorbing assemblies (11) distributed in an annular shape are connected between the bottom ring (9) and the moving rod (10).

2. The quick-detachable caster according to claim 1, characterized in that: The lifting assembly comprises a driving disk (4), the driving disk (4) being snap-connected with the bottom of the sleeve rod (3), the inner surface wall of the driving disk (4) being screw-connected with the outer surface wall of the moving rod (10), and a limiting portion for limiting axial deflection of the moving rod (10) is provided between the top of the moving rod (10) and the sleeve rod (3).

3. The quick-detachable caster according to claim 2, characterized in that: The limiting portion comprises a sliding block (12) fixedly connected to the moving rod (10); the sliding block (12) is slidably connected to the inner surface wall of the sleeve rod (3) via a vertically arranged sliding groove (13).

4. The quick-detachable caster according to claim 3, characterized in that: A slip ring (15) is fixedly mounted on the top of the driving disk (4), and the slip ring (15) is snap-connected with the bottom of the sleeve rod (3) via an annular snap-in groove.

5. The quick-detachable caster according to claim 4, characterized in that: A convex ring (14) is integrally formed at the bottom of the sleeve rod (3), and a tightening rod (16) is screwedly connected to the inner surface wall of the convex ring (14), and the open end of the tightening rod (16) abuts against the outer surface wall of the driving disc (4).

6. The quick-detachable caster according to claim 5, characterized in that: The convex ring (14) and the inner surface wall of the vertical end of the support plate (2) are respectively interference-fitted with a rubber block 1 (6) and a rubber block 2 (7), and the rubber block 1 (6) and the rubber block 2 (7) are respectively in contact with the outer surface wall of the fastening rod (16) and the locking rod (8).

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