High load wear resistant universal caster

Abstract

The utility model relates to industrial transportation technical field discloses a kind of high-load wear-resistant universal caster, including support, the top front side of support is fixedly connected with support plate, the bottom front side of support is provided with damping mechanism, the front side of support plate is provided with locking mechanism, the top rear side of support is provided with rotating mechanism, the rear side of the middle part of support is provided with dustproof mechanism, the damping mechanism includes two limit slots, two The limit slot is all set in the bottom front side of support.In the utility model, the obstacles encountered by universal wheel running are buffered and damped by the damping mechanism, the service life of the universal wheel is prolonged, the reliability and stability of the universal wheel are increased, the effect of damping is achieved, the universal wheel is relieved of its burden under high load, the stability and durability of the equipment are increased, the universal wheel can carry larger mass objects, the practicality and safety of the universal wheel are increased.

Description

Technical Field

[0001] This utility model relates to the field of industrial transportation technology, and in particular to a high-load wear-resistant universal caster. Background Technology

[0002] High-load wear-resistant swivel casters are key components used in industrial handling, logistics warehousing, and heavy equipment movement. Their core function is to achieve flexible steering while bearing heavy loads, and they also have characteristics such as wear resistance, impact resistance, and long service life. Early swivel casters included cast iron wheels and ball bearings, which were heavy and prone to wear. With the increasing demands of modern industry for efficiency, safety, and automation, the technology of these casters has been constantly evolving.

[0003] Existing high-load wear-resistant swivel casters are prone to hub damage and difficult replacement when overloaded or encountering uneven surfaces. Bearing lubrication requires regular manual operation, resulting in high maintenance costs in large logistics systems. Their shock absorption effect is minimal, they are poorly adaptable to special terrains, and they struggle to operate normally under excessive loads. They also have short service lives and cannot provide real-time feedback on load status or wear levels, leading to the risk of sudden malfunctions. When the casters need to stop, existing mechanical structures are unable to effectively brake them, resulting in poor braking performance and inconvenience in use. They also require significant manpower and are impractical. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a high-load wear-resistant universal caster, which aims to improve the problems of poor adaptability to special road surfaces and poor braking effect in the existing technology.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a high-load wear-resistant universal caster, including a bracket, a support plate fixedly connected to the top front side of the bracket, a shock-absorbing mechanism provided on the bottom front side of the bracket, a locking mechanism provided on the front side of the support plate, a rotating mechanism provided on the top rear side of the bracket, and a dustproof mechanism provided on the middle rear side of the bracket. The shock absorption mechanism includes a sliding rod, the left and right ends of which are slidably connected to the bottom front side of the bracket. Limit grooves are provided on both the left and right sides of the bottom of the bracket. Shock-absorbing springs are fixedly connected to the top of both the left and right ends of the sliding rod. Fixing screws are threadedly connected to both the left and right ends of the sliding rod. A wheel hub is rotatably connected to the middle of the sliding rod. Tires are fixedly connected to the outer wall of the wheel hub around its perimeter.

[0006] As a further description of the above technical solution: The locking mechanism includes a fixed rod and a locking rod. The outer walls of the fixed rod are fixedly connected to the front side of the support plate. The left and right ends of the locking rod pass through the top of the bracket. Rotating rods are rotatably connected to the left and right ends of the fixed rod. Restricting screws are threaded to the top left and right sides of the rotating rod. Restricting blocks are fixedly connected to the left and right ends of the locking rod. Restricting rings are fixedly connected to the left and right sides of the two restricting blocks. A brake is rotatably connected to the middle of the locking rod. A restricting spring is fixedly connected to the top front side of the brake.

[0007] As a further description of the above technical solution: The rotating mechanism includes a fixed wheel, the bottom of which is fixedly connected to the top rear side of the bracket, a sealing ring is fixedly connected to the top of the fixed wheel, a rotating wheel is rotatably connected to the top of the sealing ring, a rotating shaft passes through the middle of the rotating wheel, and a top plate is rotatably connected to the top of the rotating shaft.

[0008] As a further description of the above technical solution: The dustproof mechanism includes a connecting rod, the left and right ends of which pass through the rear middle part of the bracket. Locking rings are fixedly connected to both the left and right ends of the connecting rod, and a dustproof cover is rotatably connected to the middle part of the connecting rod.

[0009] As a further description of the above technical solution: The bottom of the rotating shaft is threadedly connected to the middle of the fixed wheel, and the middle of the rotating shaft is fixedly connected to the middle of the sealing ring.

[0010] As a further description of the above technical solution: Fixing holes are provided at the four corners of the top of the top plate, and connecting screws are fixedly connected to the inner walls of the multiple fixing holes.

[0011] As a further description of the above technical solution: The front length of the brake is greater than the front length of the support plate, and the top of the limiting spring is fixedly connected to the bottom front of the support plate.

[0012] As a further description of the above technical solution: The tire width is smaller than the inner diameter of the bracket, the relaxation length of the shock-absorbing spring is greater than the length of the limiting groove, and the bottom left and right sides of the sliding rod are slidably connected to the bottom of the limiting groove.

[0013] This utility model has the following beneficial effects: 1. In this utility model, the force in the vertical direction is relieved by the compression of the shock-absorbing spring and the up-and-down movement of the sliding rod, and the obstacles encountered by the caster wheel are buffered and damped. This improves the problem of poor adaptability of the caster wheel to special ground, extends the service life of the caster wheel, increases the reliability and stability of the caster wheel, achieves the effect of shock absorption, reduces the burden on the caster wheel under high load conditions, increases the stability and durability of the equipment, and increases the practicality and safety of the caster wheel.

[0014] 2. In this utility model, the flexible braking of the brake allows for stable braking when stationary and convenient stopping of braking when movement is required by moving the sliding rod. Compared with traditional braking mechanisms, this is more convenient and safer, increases the safety of the caster wheels, improves the problem of poor braking effect of existing caster wheels, reduces the risks that may occur when the caster wheels are stopped, and enables the caster wheels to be used immediately after stopping. This reduces the risk of brake system failure and increases the practicality of the caster wheels. Attached Figure Description

[0015] Figure 1 A perspective view of a high-load wear-resistant universal caster proposed in this utility model; Figure 2 This is a front view of a high-load wear-resistant universal caster proposed in this utility model; Figure 3 This is an exploded view of the shock absorption mechanism of a high-load wear-resistant universal caster proposed in this utility model; Figure 4 This is an exploded view of the rotating mechanism of a high-load wear-resistant universal caster proposed in this utility model; Figure 5 This is a schematic diagram of the locking mechanism for a high-load wear-resistant universal caster proposed in this utility model; Figure 6 This is a schematic diagram of the dustproof mechanism for a high-load wear-resistant universal caster proposed in this utility model.

[0016] Legend: 1. Bracket; 2. Support plate; 3. Shock absorption mechanism; 301. Limiting groove; 302. Shock absorption spring; 303. Sliding rod; 304. Fixing screw; 305. Wheel hub; 306. Tire; 4. Locking mechanism; 401. Fixing rod; 402. Rotating rod; 403. Limiting screw; 404. Locking rod; 405. Limiting block; 406. Fixing ring; 407. Brake; 408. Limiting spring; 5. Rotating mechanism; 501. Fixing disc; 502. Sealing ring; 503. Rotating disc; 504. Rotating shaft; 505. Top plate; 6. Dustproof mechanism; 601. Connecting rod; 602. Locking ring; 603. Dust cover; 7. Fixing hole; 8. Connecting screw. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. 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. Reference Figure 1 , Figure 2 ,and Figure 3 This utility model provides an embodiment of a high-load wear-resistant omnidirectional caster, including a bracket 1, a support plate 2 fixedly connected to the top front side of the bracket 1, the support plate 2 being used to fix a locking mechanism 4, a shock-absorbing mechanism 3 being provided on the bottom front side of the bracket 1, the shock-absorbing mechanism 3 effectively damping and buffering the omnidirectional caster when it encounters obstacles, a locking mechanism 4 being provided on the front side of the support plate 2, used to lock and release the omnidirectional caster, a rotating mechanism 5 being provided on the top rear side of the bracket 1, used to support the omnidirectional caster to turn flexibly, and a dustproof mechanism 6 being provided on the middle rear side of the bracket 1, the dustproof mechanism 6 effectively improving the problem of difficult-to-clean dust accumulation; The shock absorption mechanism 3 includes a sliding rod 303, the left and right ends of which are slidably connected to the bottom front side of the bracket 1. Both ends of the sliding rod 303 protrude slightly from the surface of the bracket 1. Limiting grooves 301 are formed on both the left and right sides of the bottom of the bracket 1. The outer diameter of the sliding rod 303 is the same as the inner diameter of the limiting groove 301, allowing the sliding rod 303 to slide up and down within the limiting groove 301. Shock-absorbing springs 302 are fixedly connected to the top of both ends of the sliding rod 303, and the shock-absorbing springs 302 are fixedly connected to the top of the limiting groove 301. Therefore, the shock-absorbing spring 302 can be compressed in the limiting groove 301. The left and right ends of the sliding rod 303 are threaded with fixing screws 304, so that the sliding rod 303 will not shift laterally when placed horizontally in the bracket 1. The middle part of the sliding rod 303 is rotatably connected to the hub 305. The outer wall of the hub 305 is fixedly connected to the tires 306. The hub 305 is rotatably connected to the sliding rod 303, and the tires 306 are fixedly connected to the outside of the hub 305. The tires 306 and the hub 305 can rotate together. Specifically, when the hub 305 and tire 306 rotate together and encounter an uneven road surface, the resistance from the vertical direction is converted into the elastic potential energy of the shock-absorbing spring 302, causing the hub 305 and tire 306 to move up and down in the vertical direction under the drive of the sliding rod 303, thus achieving the effect of shock absorption. This reduces the burden on the caster under high load conditions, increases the stability and durability of the equipment, and under normal conditions, the shock absorption mechanism 3 also has a partial unloading effect on the load, enabling the caster to carry objects of greater mass, thus increasing the practicality and safety of the caster.

[0018] Reference Figure 1 and Figure 5 The locking mechanism 4 includes a fixed rod 401 and a locking rod 404. The outer walls of the fixed rod 401 are fixedly connected to the front side of the support plate 2. The front side of the support plate 2 has a protrusion with a slot in the middle that is tightly connected to the fixed rod 401. The left and right ends of the locking rod 404 pass through the top of the bracket 1. Both ends of the locking rod 404 protrude a section from the surface of the bracket 1 for connection with the fixing ring 406 and the limiting block 405. The left and right ends of the fixed rod 401 are rotatably connected to a rotating rod 402. The rotating rod 402 can rotate along the circular outer tube of the fixed rod 401. The top left and right sides of the rotating rod 402 are threaded with limiting screws 403. The limiting screws 403 prevent the rotating rod 402 from falling off and can be tightened to fix it. The left and right ends of the rotating rod 402 and the locking rod 404 are fixedly connected to the limiting blocks 405. The limiting blocks 405 prevent the locking rod 404 from moving in the horizontal direction. The left and right sides of the two limiting blocks 405 are fixedly connected to the fixing rings 406. The fixing rings 406 prevent the limiting blocks 405 from falling off. The middle of the locking rod 404 is rotatably connected to the brake 407. The bottom rear side of the brake 407 can rub and press against the tire 306. When the brake 407 is released, the tire 306 can be firmly fixed. The top front side of the brake 407 is fixedly connected to the limiting spring 408. The limiting spring 408 can push against the brake 407 when the brake 407 is released by the rotating rod 402, forcing the brake 407 to fall completely to the desired position. Specifically, when it is necessary to lock the caster wheel, rotate the rotating rod 402 along the circular outer tube of the fixed rod 401. The brake 407 can quickly fall and crush the tire 306 under the action of the limiting spring 408, thereby stopping the tire 306 from moving further. This is more convenient and safer than the traditional braking mechanism. When it is necessary to continue using the caster wheel, the brake 407 can be pulled up with a tool while rotating the rotating rod 402. After the brake 407 is raised a certain distance, the bottom of the rotating rod 402 can be used to fix the brake 407, thereby achieving the purpose of moving the caster wheel. This allows the caster wheel to be used immediately after stopping and reduces the risk of brake system failure.

[0019] Reference Figure 4 and Figure 6The rotating mechanism 5 includes a fixed wheel 501, the bottom of which is fixedly connected to the rear top of the support 1. The bottom of the fixed wheel 501 is tightly connected to the support 1, and when rotation is required, it can drive all the bottom structures to rotate together. A sealing ring 502 is fixedly connected to the top of the fixed wheel 501 to prevent dust and other contaminants from entering the rotating mechanism 5 and causing steering failure or wear. A rotating wheel 503 is rotatably connected to the top of the sealing ring 502, and the rotating wheel 503 can rotate freely. A rotating shaft 504 passes through the middle of the rotating wheel 503. The rotating shaft 504 is placed vertically and can drive the rotating wheel 503 to rotate. A top plate 505 is rotatably connected to the top of the rotating shaft 504. The upper structure is connected and fixed. The dustproof mechanism 6 includes a connecting rod 601. The left and right ends of the connecting rod 601 pass through the middle rear side of the bracket 1. The left and right ends of the connecting rod 601 protrude a section on the surface of the bracket 1. The left and right ends of the connecting rod 601 are fixedly connected with locking rings 602 to fix the connecting rod 601 so that it does not rotate at will. The middle part of the connecting rod 601 is rotatably connected with a dust cover 603 to prevent dust from entering the interior of the caster wheel. The bottom of the rotating shaft 504 is threadedly connected to the middle part of the fixed wheel 501 to fix the bottom of the rotating shaft 504. The middle part of the rotating shaft 504 is fixedly connected to the middle part of the sealing ring 502 so that the sealing ring 502 is tightly connected between the rotating wheel 503 and the fixed wheel 501. Specifically, when the rotating shaft 504 is subjected to force and rotates, it will drive the fixed wheel 501 and the rotating wheel 503 to rotate. At the same time, the fixed wheel 501 is tightly connected to the bracket 1, thereby driving the entire caster wheel to turn. The dust cover 603 improves the problem of dust accumulation on the tire 306 and the wheel hub 305 to a certain extent, which increases the service life of the caster wheel, allows the caster wheel to operate more efficiently, and is not easily damaged. The bottom of the rotating shaft 504 is connected to the middle of the fixed wheel 501 by a thread, which not only makes the steering more stable, but also allows the rotating shaft 504 to be replaced regularly, making the entire caster wheel more flexible.

[0020] Reference Figure 1 and Figure 5Fixing holes 7 are provided at the four corners of the top of the top plate 505. The inner walls of the multiple fixing holes 7 are fixedly connected with connecting screws 8. The fixing holes 7 and connecting screws 8 cooperate with each other and are tightly connected to the upper part. The front length of the brake 407 is greater than the front length of the support plate 2, so that the brake 407 can be fixed by the rotating rod 402. The top of the limiting spring 408 is fixedly connected to the bottom of the front side of the support plate 2, so that the support plate 2 fixes and limits the movement range of the spring 408. The tire width of the tire 306 is smaller than the inner diameter of the bracket 1, so that the tire 306 can have a buffer distance in the horizontal direction. The relaxation length of the shock-absorbing spring 302 is greater than the length of the limiting groove 301, so that the shock-absorbing spring 302 can buffer and absorb shock under compression. The bottom left and right sides of the sliding rod 303 are slidably connected to the bottom of the limiting groove 301, so that the sliding rod 303 can slide in the limiting groove 301. Specifically, the fixing hole 7 and the connecting screw 8 work together to fix the entire caster wheel in place so that it does not shift. The brake 407 can be fixed by the rotating rod 402, allowing the caster wheel to rotate normally. The tire 306 has a buffer distance in the horizontal direction, making the entire caster wheel more durable and less prone to damage, reducing maintenance costs, and allowing the entire caster wheel to be used continuously without the need to frequently replace the tire 306 and the wheel hub 305. The sliding rod 303 can slide within the limiting groove 301, and the shock-absorbing spring 302 can buffer and absorb shocks under compression, ensuring the reliability of the shock absorption effect of the shock-absorbing spring 302.

[0021] Working principle: When the hub 305 and tire 306 rotate together and encounter an uneven road surface, the resistance from the vertical direction is converted into the elastic potential energy of the shock-absorbing spring 302, which causes the hub 305 and tire 306 to move up and down in the vertical direction under the drive of the sliding rod 303, thus achieving the effect of shock absorption. This reduces the burden on the caster under high load conditions and increases the stability and durability of the equipment. At the same time, under normal conditions, the shock absorption mechanism 3 also has a part of the unloading effect on the load, increasing the practicality and safety of the caster and enabling the caster to carry objects of greater mass. Furthermore, when it is necessary to lock the caster wheel, rotating the rotating rod 402 along the circular outer tube of the fixed rod 401 will cause the brake 407 to fall quickly under the action of the limiting spring 408 and crush the tire 306, thereby stopping the tire 306 from moving further. This is more convenient and safer than traditional braking mechanisms. When it is necessary to continue using the caster wheel, the brake 407 can be pulled up with a tool while rotating the rotating rod 402. After the brake 407 is raised a certain distance, the bottom of the rotating rod 402 can be used to fix the brake 407, thereby achieving the purpose of moving the caster wheel. This allows the caster wheel to be used immediately after stopping and reduces the risk of brake system failure.

[0022] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A high-load wear-resistant swivel caster, comprising a bracket (1), characterized in that: A support plate (2) is fixedly connected to the top front side of the bracket (1), a shock absorption mechanism (3) is provided on the bottom front side of the bracket (1), a locking mechanism (4) is provided on the front side of the support plate (2), a rotating mechanism (5) is provided on the top rear side of the bracket (1), and a dustproof mechanism (6) is provided on the middle rear side of the bracket (1). The shock absorption mechanism (3) includes a sliding rod (303). The left and right ends of the sliding rod (303) are slidably connected to the bottom front side of the bracket (1). Limiting grooves (301) are provided on the left and right sides of the bottom of the bracket (1). Shock-absorbing springs (302) are fixedly connected to the top of the left and right ends of the sliding rod (303). Fixing screws (304) are threaded to the left and right ends of the sliding rod (303). A wheel hub (305) is rotatably connected to the middle of the sliding rod (303). Tires (306) are fixedly connected to the outer wall of the wheel hub (305) around its perimeter.

2. The high-load wear-resistant swivel caster according to claim 1, characterized in that: The locking mechanism (4) includes a fixed rod (401) and a locking rod (404). The outer walls of the fixed rod (401) are fixedly connected to the front side of the support plate (2). The left and right ends of the locking rod (404) pass through the top of the bracket (1). The left and right ends of the fixed rod (401) are rotatably connected to a rotating rod (402). The top left and right sides of the rotating rod (402) are threaded with limiting screws (403). The left and right ends of the locking rod (404) are fixedly connected with limiting blocks (405). The left and right sides of the two limiting blocks (405) are fixedly connected with fixing rings (406). The middle part of the locking rod (404) is rotatably connected with a brake (407). The top front side of the brake (407) is fixedly connected with a limiting spring (408).

3. The high-load wear-resistant swivel caster according to claim 1, characterized in that: The rotating mechanism (5) includes a fixed wheel (501), the bottom of which is fixedly connected to the top rear side of the bracket (1), a sealing ring (502) is fixedly connected to the top of the fixed wheel (501), a rotating wheel (503) is rotatably connected to the top of the sealing ring (502), a rotating shaft (504) passes through the middle of the rotating wheel (503), and a top plate (505) is rotatably connected to the top of the rotating shaft (504).

4. A high-load wear-resistant swivel caster according to claim 1, characterized in that: The dustproof mechanism (6) includes a connecting rod (601), the left and right ends of which pass through the middle rear side of the bracket (1). The left and right ends of the connecting rod (601) are fixedly connected with locking rings (602), and the middle part of the connecting rod (601) is rotatably connected with a dust cover (603).

5. A high-load wear-resistant swivel caster according to claim 3, characterized in that: The bottom of the rotating shaft (504) is threaded to the middle of the fixed wheel (501), and the middle of the rotating shaft (504) is fixedly connected to the middle of the sealing ring (502).

6. A high-load wear-resistant swivel caster according to claim 3, characterized in that: Fixing holes (7) are provided at the four corners of the top of the top plate (505), and connecting screws (8) are fixedly connected to the inner walls of the multiple fixing holes (7).

7. A high-load wear-resistant swivel caster according to claim 2, characterized in that: The front length of the brake (407) is greater than the front length of the support plate (2), and the top of the limiting spring (408) is fixedly connected to the bottom front of the support plate (2).

8. A high-load wear-resistant swivel caster according to claim 1, characterized in that: The tire width of the tire (306) is smaller than the inner diameter of the bracket (1), the relaxation length of the shock absorber spring (302) is greater than the length of the limiting groove (301), and the bottom left and right sides of the sliding rod (303) are slidably connected to the bottom of the limiting groove (301).

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