High-stability impact-resistant caster structure

Abstract

The utility model discloses a high-stable impact-resistant trundle structure, it includes: the section shape of trundle frame is U type, and the U type opening of trundle frame is downward, rubber wheel is placed in the U type opening of trundle frame and is hollow inside, two hard wheels are placed respectively in the left and right sides of rubber wheel, and the side of hard wheel is connected with rubber wheel, and hard wheel is coaxial with rubber wheel, hollow shaft passes through the center of rubber wheel and the center of two hard wheels, and hollow shaft is fixedly connected with rubber wheel and two hard wheels respectively, connecting axle passes through the U type two sides of trundle frame and the inside of hollow shaft, spring is placed in the inside of hollow shaft, and spring is surrounded on the outside of connecting axle, mounting rod is placed on the upper end surface of trundle frame and is connected with trundle frame threadedly, fixed nut no.

Description

Technical Field

[0001] This utility model relates to the technical field of casters, and in particular to a highly stable and impact-resistant caster structure. Background Technology

[0002] The existing casters are solid but relatively narrow, which results in poor load-bearing capacity and excessive pressure on the ground. Utility Model Content

[0003] This invention aims to overcome the shortcomings of existing technologies in terms of insufficient stability under high ground pressure, and provides a highly stable and impact-resistant caster structure that improves stability and reduces ground pressure.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A highly stable and impact-resistant caster structure, comprising: A caster bracket is placed on top of the caster, and the cross-sectional shape of the caster bracket is U-shaped, with the U-shaped opening facing downwards; A rubber wheel is placed inside the U-shaped opening of the caster frame, and the interior of the rubber wheel is hollow. Two hard wheels are placed inside the U-shaped opening of the caster frame and on the left and right sides of the rubber wheel, respectively. The hard wheels are connected to the sides of the rubber wheel and are coaxial with the rubber wheel. The outer diameter of the hard wheel is larger than that of the rubber wheel. A hollow shaft with both ends connected to the interior, the hollow shaft passing through the center of the rubber wheel and the center of the two hard wheels, the hollow shaft being fixedly connected to the rubber wheel and the two hard wheels respectively; A connecting shaft passes through both sides of the U-shape of the caster frame and the interior of the hollow shaft. The cross-sectional shape of the connecting shaft is T-shaped, and the T-shaped crossbar of the connecting shaft is placed outside one side of the U-shape of the caster frame. A spring is placed inside the hollow shaft, the spring is wrapped around the outer surface of the connecting shaft, and the two ends of the spring are respectively connected to the inner surfaces of the two U-shaped sides of the caster frame; A mounting rod is placed on the upper end face of the caster frame and threadedly connected to the caster frame, wherein the mounting rod is located at the center of the upper end face of the caster frame; A fixing nut is placed outside one side of the T-shaped crossbar of the U-shaped connecting shaft of the caster frame. The fixing nut is threadedly connected to the connecting shaft, and the connecting shaft is connected to the caster frame through the fixing nut.

[0005] During assembly, first clamp the two hard wheels with the rubber wheel and fix them together using the hollow shaft. Then, place the spring into the hollow shaft, install it into the caster frame, and use the connecting shaft rod to pass through the caster frame and hollow shaft, then fix it with the fixing nut. Finally, install the mounting rod and connect it to the panel for transporting goods. In use, the rubber wheel widens the contact width of the entire wheel, and with the spring, the caster wheel can greatly buffer side impacts, achieving the purpose of improving stability and reducing pressure on the ground.

[0006] Preferably, the rubber wheel is provided with an inner support plate, which surrounds the hollow shaft with the center of the rubber wheel as the axis. The inner edge of the inner support plate is fixedly connected to the inner surface of the rubber wheel, and the outer edge of the inner support plate is fixedly connected to the outer surface of the rubber wheel. The inner support plate is parallel to the rigid wheel. The inner support plate can stabilize the rubber wheel.

[0007] Preferably, the mounting rod is equipped with two fixing nuts, which are respectively located inside and outside the U-shape of the caster frame, and are threadedly connected to the mounting rod. The two fixing nuts allow for fine-tuning of the caster height.

[0008] Preferably, the rubber wheel is provided with two mounting plates, which are respectively placed between the rubber wheel and the two hard wheels. One side of the mounting plate is fixedly connected to the rubber wheel, and the other side of the mounting plate is connected to the hard wheels. The mounting plates fix the side of the rubber wheel for easy fixation to the hard wheels.

[0009] Preferably, the mounting plate has several locking blocks evenly distributed on it, which are fixedly connected to the mounting plate. The hard wheel has several slots, each corresponding to a locking block. The locking blocks are placed within the slots, and the mounting plate engages with the hard wheel through the cooperation of the locking blocks and slots. The locking blocks and slots make the connection between the hard wheel and the rubber wheel more secure, allowing them to rotate synchronously.

[0010] Preferably, the rubber wheel contains several metal wires perpendicular to the two rigid wheels. The metal wires are evenly distributed within the outer skin layer of the rubber wheel, with the center of the rubber wheel as the axis, and are fixedly connected to the rubber wheel. The metal wires increase the stability of the rubber wheel and reduce wear and deformation.

[0011] The beneficial effects of this utility model are: improving stability and reducing pressure on the ground; the inner support plate can stabilize the rubber wheel; the two fixing nuts can help fine-tune the height of the caster; the mounting plate fixes the side of the rubber wheel for easy fixing to the hard wheel; the locking block and the locking groove make the connection between the hard wheel and the rubber wheel more stable and synchronized when rotating; the metal wire increases the stability of the rubber wheel and reduces wear and deformation. Attached Figure Description

[0012] Figure 1This is a schematic diagram of the structure of this utility model; Figure 2 This is a cross-sectional view of the main view of this utility model; Figure 3 yes Figure 2 A magnified view of detail A; Figure 4 yes Figure 2 A magnified view of detail B.

[0013] In the diagram: 1. Caster bracket, 2. Rubber wheel, 3. Hard wheel, 4. Hollow shaft, 5. Connecting shaft, 6. Spring, 7. Mounting rod, 8. Fixing nut one, 9. Inner support plate, 10. Fixing nut two, 11. Mounting plate, 12. Clamping block, 13. Clamping groove, 14. Metal wire. Detailed Implementation

[0014] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0015] like Figure 1 and Figure 2 In one embodiment, a highly stable and impact-resistant caster structure includes: a caster frame 1 positioned above the caster, the caster frame 1 having a U-shaped cross-section with the U-shaped opening facing downwards; a rubber wheel 2 positioned within the U-shaped opening of the caster frame 1, the interior of the rubber wheel 2 being hollow; two rigid wheels 3 positioned within the U-shaped opening of the caster frame 1 and respectively positioned on the left and right sides of the rubber wheel 2, the rigid wheels 3 being connected to the sides of the rubber wheel 2, the rigid wheels 3 being coaxial with the rubber wheel 2, and the outer diameter of the rigid wheels 3 being larger than the outer diameter of the rubber wheel 2; a hollow shaft 4 with both ends communicating with the interior, the hollow shaft 4 passing through the center of the rubber wheel 2 and the centers of the two rigid wheels 3, the hollow shaft 4 being fixedly connected to the rubber wheel 2 and the two rigid wheels 3 respectively; and a connecting shaft. 5 passes through the U-shaped sides of the caster frame 1 and the interior of the hollow shaft 4. The cross-sectional shape of the connecting shaft 5 is T-shaped, and the T-shaped crossbar of the connecting shaft 5 is placed outside one side of the U-shape of the caster frame 1. The spring 6 is placed inside the hollow shaft 4 and surrounds the outer surface of the connecting shaft 5. The two ends of the spring 6 are respectively connected to the inner surfaces of the two U-shaped sides of the caster frame 1. The mounting rod 7 is placed on the upper end surface of the caster frame 1 and threadedly connected to the caster frame 1. The mounting rod 7 is placed at the center of the upper end surface of the caster frame 1. The fixing nut 8 is placed outside one side of the T-shaped crossbar of the connecting shaft 5 at the U-shape of the caster frame 1. The fixing nut 8 is threadedly connected to the connecting shaft 5, and the connecting shaft 5 is connected to the caster frame 1 through the fixing nut 8.

[0016] like Figure 2 As shown, the rubber wheel 2 is provided with an inner support plate 9. The inner support plate 9 is surrounded around the hollow shaft 4 with the center of the rubber wheel 2 as the axis. The inner edge of the inner support plate 9 is fixedly connected to the inner side of the rubber wheel 2, and the outer edge of the inner support plate 9 is fixedly connected to the outer side of the rubber wheel 2. The inner support plate 9 is parallel to the hard wheel 3.

[0017] like Figure 2 As shown, the mounting rod 7 is provided with two fixing nuts 10. The two fixing nuts 10 are respectively placed inside and outside the U-shape of the caster frame 1, and the fixing nuts 10 are threadedly connected to the mounting rod 7.

[0018] like Figure 4 As shown, the rubber wheel 2 is provided with two mounting plates 11. The mounting plates 11 are respectively placed between the rubber wheel 2 and the two hard wheels 3. One side of the mounting plate 11 is fixedly connected to the rubber wheel 2, and the other side of the mounting plate 11 is connected to the hard wheels 3.

[0019] like Figure 4 As shown, the mounting plate 11 is provided with a number of locking blocks 12 and is evenly distributed on the mounting plate 11. The locking blocks 12 are fixedly connected to the mounting plate 11. The hard wheel 3 is provided with a number of locking slots 13. The locking slots 13 correspond one-to-one with the locking blocks 12. The locking blocks 12 are placed in the locking slots 13. The mounting plate 11 is engaged with the hard wheel 3 through the cooperation of the locking blocks 12 and the locking slots 13.

[0020] like Figure 3 As shown, the rubber wheel 2 has several metal wires 14 inside. The metal wires 14 are perpendicular to the two hard wheels 3. The metal wires 14 are evenly distributed in the outer skin of the rubber wheel 2 with the center of the rubber wheel 2 as the axis. The metal wires 14 are fixedly connected to the rubber wheel 2.

[0021] During assembly, first clamp the rubber wheel 2 between the two hard wheels 3, and insert the clip 12 on the mounting plate 11 into the slot 13 of the hard wheel 3, and fix them together with the hollow shaft 4. Then, place the spring 6 into the hollow shaft 4, and after installation, place it into the caster frame 1. Then, use the connecting shaft 5 to pass through the caster frame 1 and the hollow shaft 4, and fix it with the fixing nut 8. Finally, install the mounting rod 7, and use two fixing nuts 10 to install and fix the mounting rod 7 inside and outside the caster frame 1 respectively. The fixing nut 10 inside the caster frame 1 fixes the mounting rod 7. When the mounting rod 7 is connected to the panel for transporting goods, the position of the fixing nut 10 outside the caster frame 1 can be adjusted to adjust the depth of the mounting rod 7 installed on the panel for transporting goods, so as to finely adjust the height of the caster. When in use, the rubber wheel 2 widens the contact width of the entire swivel wheel, the inner support plate 9 and the metal wire 1 prevent deformation, and with the spring 6, the swivel wheel of the caster can greatly buffer the side impact, thereby improving stability and reducing the pressure on the ground.

Claims

1. A highly stable and impact-resistant caster structure, characterized in that, include: A caster bracket (1) is placed on top of the caster. The cross-sectional shape of the caster bracket (1) is U-shaped, and the U-shaped opening of the caster bracket (1) faces downward. A rubber wheel (2) is placed inside the U-shaped opening of the caster frame (1), and the interior of the rubber wheel (2) is hollow. Two hard wheels (3) are placed in the U-shaped opening of the caster frame (1) and respectively on the left and right sides of the rubber wheel (2). The hard wheels (3) are connected to the side of the rubber wheel (2). The hard wheels (3) and the rubber wheel (2) are coaxial. The outer diameter of the hard wheels (3) is larger than the outer diameter of the rubber wheel (2). A hollow shaft (4) with both ends connected to the interior, the hollow shaft (4) passes through the center of the rubber wheel (2) and the center of the two hard wheels (3), and the hollow shaft (4) is fixedly connected to the rubber wheel (2) and the two hard wheels (3) respectively; The connecting shaft (5) passes through the U-shaped sides of the caster frame (1) and the interior of the hollow shaft (4). The cross-sectional shape of the connecting shaft (5) is T-shaped, and the T-shaped crossbar of the connecting shaft (5) is placed outside the U-shaped side of the caster frame (1). Spring (6) is placed inside the hollow shaft (4). The spring (6) is wrapped around the outer surface of the connecting shaft (5). The two ends of the spring (6) are respectively connected to the inner sides of the U-shaped sides of the caster frame (1). Mounting rod (7) is placed on the upper end face of caster frame (1) and threadedly connected to caster frame (1). Mounting rod (7) is placed at the center of the upper end face of caster frame (1). The fixing nut (8) is placed outside one side of the T-shaped crossbar of the U-shaped connecting shaft (5) of the caster frame (1). The fixing nut (8) is threadedly connected to the connecting shaft (5). The connecting shaft (5) is connected to the caster frame (1) through the fixing nut (8).

2. The highly stable and impact-resistant caster structure according to claim 1, characterized in that, The rubber wheel (2) is provided with an inner support plate (9). The inner support plate (9) is surrounded around the hollow shaft (4) with the center of the rubber wheel (2) as the axis. The inner edge of the inner support plate (9) is fixedly connected to the inner side of the rubber wheel (2), and the outer edge of the inner support plate (9) is fixedly connected to the outer side of the rubber wheel (2). The inner support plate (9) is parallel to the hard wheel (3).

3. The highly stable and impact-resistant caster structure according to claim 1, characterized in that, The mounting rod (7) is provided with two fixing nuts (10), which are respectively placed inside and outside the U-shape of the caster frame (1). The fixing nuts (10) are threadedly connected to the mounting rod (7).

4. The highly stable and impact-resistant caster structure according to claim 2, characterized in that, The rubber wheel (2) is provided with two mounting plates (11). The mounting plates (11) are respectively placed between the rubber wheel (2) and the two hard wheels (3). One side of the mounting plate (11) is fixedly connected to the rubber wheel (2), and the other side of the mounting plate (11) is connected to the hard wheel (3).

5. The highly stable and impact-resistant caster structure according to claim 4, characterized in that, The mounting plate (11) is provided with a number of locking blocks (12) and evenly distributed on the mounting plate (11). The locking blocks (12) are fixedly connected to the mounting plate (11). The hard wheel (3) is provided with a number of locking slots (13). The locking slots (13) correspond one-to-one with the locking blocks (12). The locking blocks (12) are placed in the locking slots (13). The mounting plate (11) is engaged with the hard wheel (3) through the cooperation of the locking blocks (12) and the locking slots (13).

6. A highly stable and impact-resistant caster structure according to claim 2 or 4, characterized in that, The rubber wheel (2) is provided with several metal wires (14). The metal wires (14) are perpendicular to the two hard wheels (3). The metal wires (14) are evenly distributed in the outer skin of the rubber wheel (2) with the center of the rubber wheel (2) as the axis. The metal wires (14) are fixedly connected to the rubber wheel (2).

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