Gear-driven caster wheel

Abstract

The utility model relates to a gear drive trolley, it includes two supports, is provided with the wheel body between two supports, is provided with the rotating shaft and rotates between two supports, the wheel body fixed cover is equipped on rotating shaft, one end fixed connection has the gear of rotating shaft, the utility model has the effect that compact structure, transmission efficient, reliable operation.

Description

Technical Field

[0001] This utility model relates to the field of drive caster technology, and in particular to a gear-driven caster. Background Technology

[0002] In automated logistics, intelligent warehousing, and various mobile robot platforms, drive casters serve as core load-bearing and motion execution components, and their performance directly determines the equipment's mobility, load capacity, and operational reliability.

[0003] Currently, most common drive solutions use an external motor in conjunction with a chain or belt for transmission. Although this technology is widely used, it has inherent drawbacks: First, chain drives require a large installation space, resulting in a bulky drive structure that is not conducive to miniaturization and compact design of equipment. They also generate significant noise during operation and are prone to problems such as tooth skipping or chain derailment due to chain wear and elongation, requiring frequent maintenance and tensioning. Belt drives, on the other hand, suffer from insufficient transmission rigidity, slippage, poor accuracy, and short lifespan, making it difficult to meet the requirements of heavy-duty and high-precision positioning applications. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a gear-driven caster with compact structure, high transmission efficiency and reliable operation.

[0005] The above-mentioned utility model objective is achieved through the following technical solution:

[0006] A gear-driven caster includes two brackets, a wheel body is disposed between the two brackets, and a rotating shaft is rotatably passed between the two brackets; the wheel body is fixedly sleeved on the rotating shaft; a gear is fixedly connected to one end of the rotating shaft.

[0007] The above technical solution enables the synchronous rotation of gears, rotating shafts, and wheels, giving the casters an active drive function. At the same time, the double-support structure provides stable support for the casters, ensuring the reliability of the overall structure.

[0008] As a further technical solution of this utility model: the rotating shaft passes through the bracket, and its two ends are respectively rotatably connected to the bracket through bearings.

[0009] The above technical solution significantly reduces the rotational friction between the rotating shaft and the bracket, making the rotation of the rotating shaft smoother, effectively reducing component wear, and extending the service life of the casters.

[0010] As a further technical solution of this utility model: a bearing cover is provided on the side of the bearing away from the wheel body.

[0011] The above technical solution provides a limiting and protective function for the bearing, preventing it from loosening or shifting within the bracket, and further ensuring the stability of the rotating shaft.

[0012] As a further technical solution of this utility model: the top of the bracket is provided with multiple mounting holes.

[0013] The above technical solution facilitates the fixed connection between the casters and external equipment, improves the ease of caster installation, and ensures the structural stability after assembly.

[0014] As a further technical solution of this utility model: the gear and the rotating shaft are fixedly connected by a first screw.

[0015] Through the above technical solution, the rigid connection formed by the first screw enables synchronous power transmission between the gear and the rotating shaft without relative rotation, ensuring the accuracy and reliability of the drive power transmission.

[0016] As a further technical solution of this utility model: the wheel body and the rotating shaft are fixedly connected by a second screw.

[0017] The above technical solution securely locks the wheel onto the rotating shaft using the second screw, enabling synchronous rotation of the wheel and the rotating shaft. This ensures that the torque of the rotating shaft is efficiently transmitted to the wheel, improving the stability and transmission reliability of the caster's active drive.

[0018] In summary, this utility model has at least one of the following beneficial technical effects:

[0019] 1. This utility model relates to a gear-driven caster, which achieves active driving and structural stability support for the caster by rotating a shaft through two supports and connecting a gear and a wheel body.

[0020] 2. This utility model discloses a gear-driven caster, which achieves smooth rotation of the rotating shaft and reduces component wear by setting a bearing between the rotating shaft and the bracket.

[0021] 3. This utility model provides a gear-driven caster, which uses a first screw and a second screw to fix the gear, rotating shaft and wheel body, so as to achieve synchronous rotation and stable power transmission among the three. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of a first embodiment of a gear-driven caster according to the present invention.

[0023] Figure 2 This is a side view of a first embodiment of a gear-driven caster according to the present invention.

[0024] Figure 3This is a top view of a first embodiment of a gear-driven caster according to the present invention.

[0025] Figure 4 This is a cross-sectional view of a gear-driven caster according to a first embodiment of the present invention.

[0026] Reference numerals in the attached drawings: 1. Bracket; 11. Mounting hole; 2. Wheel body; 3. Rotating shaft; 4. Gear; 5. Bearing; 6. Bearing cover; 7. First screw; 8. Second screw. Detailed Implementation

[0027] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0028] In the description of this application, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, 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, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0029] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0030] Example 1:

[0031] Reference Figure 1 , Figure 2 and Figure 3 The present invention discloses a gear-driven caster, which includes two opposing brackets 1. The brackets 1 are integrally formed metal structures with high structural strength, and their surfaces are preferably treated with powder coating or paint to achieve corrosion resistance.

[0032] A wheel 2 is disposed between the two supports 1. The wheel 2 is a steel-core polyurethane wheel, comprising an internal steel core and a polyurethane tread covering the outer periphery of the steel core. As a preferred embodiment, the steel core is rust-proofed, the hardness of the polyurethane tread can be selected as 95 Shore A±3, the wheel diameter can be selected as 250 mm, and the wheel width can be selected as 60 mm; this allows the wheel 2 to effectively protect the ground and possess good temperature resistance and load-bearing capacity.

[0033] Reference Figure 3 A rotating shaft 3 is rotatably connected between two supports 1 via a bearing 5, and a wheel 2 is mounted on the rotating shaft 3. A transmission gear 4 is fixedly connected to one end of the rotating shaft 3, and its gear module is compatible with the external power system. The bearing 5 is preferably a cylindrical roller bearing or a deep groove ball bearing, with the inner ring having a transition fit with the rotating shaft 3 and the outer ring having an interference fit with the support 1. A bearing cover 6 is provided on the side of the bearing 5 away from the wheel 2. The bearing cover 6 is detachably connected to the support 1 by bolts, and a rubber sealing gasket is provided on the inner side of the bearing cover 6 to achieve axial positioning and dustproof sealing of the bearing 5.

[0034] Reference Figure 3 The top of the bracket 1 has multiple mounting holes 11, which are divided into two specifications: large holes and small holes. The large holes have a diameter of 12mm (suitable for M10 bolts) and the small holes have a diameter of 6mm (suitable for M5 positioning pins). The large holes are used to fit the main fixing bolts, and the small holes can be used as positioning holes or auxiliary fixing holes. By combining different specifications of mounting holes 11, the caster can be accurately and firmly fixedly connected to the external equipment.

[0035] Reference Figure 1 and Figure 4 Gear 4 and rotating shaft 3 are fixedly connected by six first screws 7 (M6X20) sequentially passing through six evenly distributed fixing holes on the circumference of gear 4 and the corresponding internal threaded holes on rotating shaft 3. The first screws 7 are inserted from the outside of gear 4 and threaded into the internal threaded holes of rotating shaft 3. After tightening, gear 4 and rotating shaft 3 are tightly fitted together. Wheel body 2 and rotating shaft 3 are fixedly connected by six second screws 8 (M6X30) sequentially passing through six evenly distributed fixing holes on the circumference of steel wheel core of wheel body 2 and the corresponding fixing holes on rotating shaft 3, so that gear 4, rotating shaft 3 and wheel body 2 form a rigid and synchronously rotating whole. The entire caster has a load capacity of up to 350KGS and a weight of 16.1KG, which can meet the needs of heavy-duty scenarios.

[0036] In use, the gear-driven caster of this utility model first precisely aligns and fixes the caster to the external equipment through the mounting hole 11 at the top of the bracket 1, ensuring a firm and secure assembly. Then, when the output torque of the external drive source (such as a motor) is transmitted to the drive gear meshing with the gear 4, power is input to the caster. The torque first drives the gear 4 to rotate. Since the gear 4 and the rotating shaft 3 are fixed by the first screw 7, and the wheel body 2 and the rotating shaft 3 are fixed by the second screw 8, the three form a rigid synchronous rotating body. Therefore, the rotation of the gear 4 directly drives the rotating shaft 3 to rotate synchronously, and the power transmission is lossless. The rotating shaft 3 is then rigidly connected to the wheel body 2 by the second screw 8, driving the wheel body 2 to rotate synchronously, ultimately realizing the active walking function of the caster. During this process, the bearing 5 supporting the rotating shaft 3 ensures flexible rotation, while the bearing cover 6 continuously provides sealing protection for the bearing 5. The entire power transmission process is completed efficiently and smoothly within an integrated compact structure.

[0037] The implementation principle of this utility model is as follows: Based on an integrated direct drive design, the gear 4 is fixed to the rotating shaft 3 by the first screw 7, and the wheel body 2 is fixed to the rotating shaft 3 by the second screw 8, so that the three are directly connected into a rigid whole, realizing the synchronous transmission of power from the gear 4 to the wheel body 2 and improving transmission efficiency. The rotating shaft 3 achieves low-friction rotation through the bearings 5 ​​on both sides, which not only ensures smooth operation but also enhances load-bearing capacity. The double bracket 1 structure provides a stable support foundation for the entire system, ensuring structural stability under load. The bearing cover 6 plays a fixing and sealing role, effectively extending the service life of the bearing 5. The coordinated linkage of all structures ultimately achieves an integrated drive effect with simplified structure, reliable transmission, and durable operation.

[0038] The embodiments described herein are preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape, and principle of this utility model should be included within the scope of protection of this utility model.

Claims

1. A gear-driven caster, comprising two brackets (1), wherein a wheel body (2) is disposed between the two brackets (1), characterized in that, A rotating shaft (3) is rotatably connected between the two brackets (1); the wheel (2) is fixedly sleeved on the rotating shaft (3); a gear (4) is fixedly connected to one end of the rotating shaft (3).

2. A gear-driven caster according to claim 1, characterized in that, The rotating shaft (3) passes through the bracket (1), and its two ends are rotatably connected to the bracket (1) through bearings (5).

3. A gear-driven caster according to claim 2, characterized in that, The bearing (5) is provided with a bearing cover (6) on the side away from the wheel body (2).

4. A gear-driven caster according to claim 1, characterized in that, The top of the bracket (1) has multiple mounting holes (11).

5. A gear-driven caster according to claim 1, characterized in that, The gear (4) and the rotating shaft (3) are fixedly connected by the first screw (7).

6. A gear-driven caster according to claim 5, characterized in that, The wheel body (2) and the rotating shaft (3) are fixedly connected by the second screw (8).

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