Trundle support with high bearing capacity

Abstract

The trundle support with the high bearing capacity comprises a base, an installation column is fixedly connected to the base, an installation base is rotationally arranged on the base, the installation column penetrates through the installation base, the top end of the installation column is in threaded connection with a nut, and the nut abuts against the top face of the installation base. Two supporting plates are fixedly connected to the mounting base, and trundles are rotationally connected between the two supporting plates. A first rotating assembly is arranged between the mounting base and the base, and a second rotating assembly is arranged between the mounting column and the mounting base. The device is simple in structure and convenient to use, has high bearing capacity, and facilitates disassembly and replacement of internal parts.

Description

Technical Field

[0001] This utility model relates to the field of caster bracket technology, and in particular to a caster bracket with strong load-bearing capacity. Background Technology

[0002] A caster bracket is a specialized support device for mounting casters, playing an indispensable role in flatbed carts. As a central connecting component, the caster bracket ensures effective connection between all parts, enabling the casters to function stably and improving the smoothness and safety of the cart's transport process. Existing caster brackets, to facilitate wheel steering, typically use two rotating bases with ball bearings between them to ensure stable rotation. However, because flatbed carts frequently transport heavy goods and have limited load-bearing capacity, the ball bearings are prone to breakage, affecting steering functionality. Furthermore, most existing caster brackets are one-piece structures, making ball bearing replacement difficult. Therefore, there is an urgent need for a caster bracket with high load-bearing capacity and easily replaceable ball bearings. Utility Model Content

[0003] The purpose of this invention is to provide a caster bracket with strong load-bearing capacity to solve the problems existing in the prior art.

[0004] To achieve the above objectives, this utility model provides the following solution: This utility model provides a caster bracket with strong load-bearing capacity, including a base, a mounting column fixedly connected to the base, a mounting seat rotatably mounted on the base, the mounting column penetrating the mounting seat, a nut threadedly connected to the top of the mounting column, the nut abutting against the top surface of the mounting seat; two support plates fixedly connected to the mounting seat, and a caster rotatably connected between the two support plates; a first rotating assembly is provided between the mounting seat and the base, and a second rotating assembly is provided between the mounting column and the mounting seat.

[0005] Preferably, the first rotating component includes an annular groove formed on the bottom surface of the mounting base, and a mating groove is formed on the bottom surface of the base corresponding to the annular groove. Limiting rings are installed in both the annular groove and the mating groove, and a plurality of balls are placed between the two limiting rings.

[0006] Preferably, the second rotating assembly includes a mounting groove formed in the mounting base, the mounting post is located in the mounting groove, a tapered roller bearing is installed in the mounting groove, the tapered roller bearing is sleeved on the outside of the mounting post and its outer wall is in contact with the inner wall of the mounting groove.

[0007] Preferably, there is a gap between the mounting base and the base, a sealing groove is provided on the periphery of the mounting base, a sealing ring is fitted on the sealing groove, and the sealing ring is in contact with the base.

[0008] Preferably, the base, mounting base, and support plate are all cast iron parts; the mounting base and support plate are fixedly connected by welding.

[0009] This utility model discloses the following technical effects: It uses two limiting rings to cooperate with ball bearings to form a bearing structure, replacing traditional ball bearings and making the internal ball bearings less prone to breakage. By installing tapered roller bearings in the mounting base, the axial load is increased, thereby improving the load-bearing capacity. Furthermore, the mounting column connects the separate base and mounting seat, facilitating disassembly and ball bearing replacement. This utility model has a simple structure, is easy to use, has a strong load-bearing capacity, and allows for easy disassembly and replacement of internal parts. Attached Figure Description

[0010] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0011] Figure 1 This is a schematic diagram of the caster bracket structure of this utility model;

[0012] The components include: 1. base; 2. mounting column; 3. mounting seat; 4. nut; 5. support plate; 6. caster; 7. annular groove; 8. mating groove; 9. limit ring; 10. ball; 11. mounting groove; 12. tapered roller bearing; 13. sealing ring. Detailed Implementation

[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0014] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0015] Reference Figure 1This utility model provides a caster bracket with high load-bearing capacity. A mounting column 2 is fixedly connected to a base 1, and a mounting seat 3 is rotatably mounted on the base 1. The mounting column 2 passes through the mounting seat 3, and a nut 4 is threadedly connected to the top of the mounting column 2, abutting against the top surface of the mounting seat 3. Two support plates 5 are fixedly connected to the mounting seat 3, and a caster 6 is rotatably connected between the two support plates 5. A first rotating assembly is provided between the mounting seat 3 and the base 1, and a second rotating assembly is provided between the mounting column 2 and the mounting seat 3. Two limiting rings 9 cooperate with ball bearings 10 to form a bearing structure, replacing the traditional ball bearings 10, making the internal ball bearings 10 less prone to breakage. By installing tapered roller bearings 12 inside the mounting seat 3, the axial load is increased, thereby improving the load-bearing capacity. Furthermore, the mounting column 2 connects the separately mounted base 1 and mounting seat 3, facilitating disassembly and replacement of the ball bearings 10.

[0016] In a further optimized design, the first rotating component includes an annular groove 7 formed on the bottom surface of the mounting base 3. A mating groove 8 is formed on the bottom surface of the base 1 corresponding to the annular groove 7. Limiting rings 9 are installed in both the annular groove 7 and the mating groove 8, and several balls 10 are placed between the two limiting rings 9. The two limiting rings 9 and the balls 10 cooperate to form a bearing structure, replacing the existing technology that only uses balls 10 as an intermediate structure. This makes the balls 10 less prone to breakage and increases their service life.

[0017] In a further optimized design, the second rotating assembly includes a mounting groove 11 formed in the mounting base 3. A mounting post 2 is located within the mounting groove 11, and a tapered roller bearing 12 is installed within the mounting groove 11. The tapered roller bearing 12 is sleeved on the outside of the mounting post 2, with its outer wall fitting against the inner wall of the mounting groove 11. The tapered roller bearing 12 can improve the load-bearing capacity in the axial direction, thereby improving the overall load-bearing capacity.

[0018] In a further optimized design, a gap is left between the mounting base 3 and the base 1. A sealing groove is formed on the periphery of the mounting base 3, and a sealing ring 13 is fitted onto the sealing groove, with the sealing ring 13 in contact with the base 1. The gap between the mounting base 3 and the base 1 reduces the resistance to rotation between the two and prevents wear, while the sealing ring 13 prevents dust from entering.

[0019] The design was further optimized so that the base 1, mounting base 3, and support plate 5 are all made of cast iron; the mounting base 3 and support plate 5 are fixedly connected by welding. This increases the overall strength and thus the load-bearing capacity.

[0020] The design has been further optimized by providing mounting holes on the base 1 for fixing it to the bottom plate of the flatbed truck.

[0021] The working process of this utility model is as follows: When in use, the base 1 is installed on the bottom plate of the trolley through the mounting hole, and then it is used. When the ball 10 breaks, the nut 4 is loosened and the mounting base 3 is removed to replace the ball 10 between the two limit rings 9, which is convenient and quick.

[0022] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0023] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A caster bracket with high load-bearing capacity, characterized in that: The device includes a base (1), on which a mounting column (2) is fixedly connected, and a mounting seat (3) is rotatably mounted on the base (1). The mounting column (2) passes through the mounting seat (3), and a nut (4) is threadedly connected to the top of the mounting column (2). The nut (4) abuts against the top surface of the mounting seat (3). Two support plates (5) are fixedly connected to the mounting seat (3), and casters (6) are rotatably connected between the two support plates (5). A first rotating assembly is provided between the mounting seat (3) and the base (1), and a second rotating assembly is provided between the mounting column (2) and the mounting seat (3).

2. The caster bracket with high load-bearing capacity according to claim 1, characterized in that: The first rotating component includes an annular groove (7) on the bottom surface of the mounting base (3), and a mating groove (8) is provided on the bottom surface of the base (1) corresponding to the annular groove (7). Limiting rings (9) are installed in both the annular groove (7) and the mating groove (8), and several balls (10) are placed between the two limiting rings (9).

3. The caster bracket with high load-bearing capacity according to claim 1, characterized in that: The second rotating assembly includes a mounting groove (11) formed in the mounting base (3), the mounting post (2) is located in the mounting groove (11), a tapered roller bearing (12) is installed in the mounting groove (11), the tapered roller bearing (12) is sleeved on the outside of the mounting post (2) and its outer wall is in contact with the inner wall of the mounting groove (11).

4. The caster bracket with high load-bearing capacity according to claim 1, characterized in that: There is a gap between the mounting base (3) and the base (1). A sealing groove is provided on the periphery of the mounting base (3). A sealing ring (13) is fitted on the sealing groove. The sealing ring (13) is in contact with the base (1).

5. The caster bracket with high load-bearing capacity according to claim 1, characterized in that: The base (1), mounting seat (3) and support plate (5) are all cast iron parts; the mounting seat (3) and support plate (5) are fixedly connected by welding.

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