Steering wheel with high stability

Abstract

The utility model relates to a steering wheel, in particular to a steering wheel with high stability, which comprises two fixing plates, a transmission system and a steering system, the transmission system and the steering system are arranged on the two fixing plates, the transmission system comprises a walking driving motor and a wheel arranged on one side of the walking driving motor, and an input shaft is arranged on the walking driving motor. An output helical-tooth sun gear, an output helical-tooth planet gear and an output helical-tooth gear ring are sequentially arranged on the outer side of the input shaft, the output helical-tooth sun gear and the output helical-tooth planet gear are each provided with a helical-tooth structure, and the steering system comprises a steering connecting flange and a steering driving motor fixed to the lower end face of the steering connecting flange; the output end of the steering driving motor is connected with a straight tooth gear, and a slewing bearing outer ring and a slewing bearing inner ring are sequentially arranged at the end, away from the steering driving motor, of the straight tooth gear. According to the steering wheel, the two sides of the wheel are supported through the two fixing plates, so that the bearing capacity is higher, and the overall stability is improved.

Description

Technical Field

[0001] This utility model relates to a steering wheel, specifically a steering wheel with high stability. Background Technology

[0002] Steering wheels are wheels used in automated logistics and industrial production to carry heavy objects. Powered by a drive motor, the steering mechanism controls the steering angle of the wheels, enabling the AGV to move forward, backward, rotate in place, and move left or right.

[0003] Existing steering wheel structures are relatively complex and poorly designed. Mainstream single-wheel steering wheels often use a single-sided supported housing, which limits their load-bearing capacity and overall stability. Furthermore, mainstream single-wheel steering wheels often use spur gear sets, whose performance in terms of precision and noise cannot meet the requirements of some specific application scenarios. Therefore, the inventors have improved the structure of the steering wheel. Utility Model Content

[0004] The purpose of this invention is to provide a highly stable steering wheel. This steering wheel has the advantages of simple structure, reasonable design, improved precision, reduced overall noise, and double-sided support for the wheel by two fixed plates, thus having a higher load-bearing capacity. It can maximize the traction capacity of the system, achieve the best match between power and load-bearing capacity, and improve overall stability, thereby solving the problems mentioned in the above technical background.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a highly stable steering wheel, comprising two fixed plates and a transmission system and a steering system mounted on the two fixed plates, wherein the steering system is located on one side of the transmission system, and the transmission system includes a travel drive motor and a wheel located on one side of the travel drive motor, wherein the travel drive motor is provided with an input shaft, and an output helical sun gear, an output helical planet gear, and an output helical ring gear are sequentially arranged on the outer side of the input shaft, the output helical sun gear is fixed on the input shaft, and both the output helical sun gear and the output helical planet gear have helical tooth structures, thus achieving high precision. Furthermore, the use of helical tooth structures can... To significantly reduce the overall noise level of the steering wheel and meet the requirements of applications with noise restrictions, the output helical planetary gears are positioned between the output helical sun gear and the output helical ring gear, and the output helical planetary gears mesh with the output helical sun gear and the output helical ring gear respectively. Therefore, when the input shaft rotates, it can sequentially drive the output helical sun gear, the output helical planetary gears, and the output helical ring gear to rotate. The steering system includes a steering connection flange and a steering drive motor fixed to the lower end face of the steering connection flange. The output end of the steering drive motor is connected to a spur gear, and the outer ring of the slewing bearing and the inner ring of the slewing bearing are sequentially arranged at the end of the spur gear away from the steering drive motor.

[0006] Preferably, the two fixed plates are parallel to each other, and the wheel is positioned between the two fixed plates. Both fixed plates can support the wheel, thus increasing the load-bearing capacity of the steering wheel and maximizing the traction capacity of the system. This achieves the best match between power and load-bearing capacity. With the double-sided support structure, the overall stability of the steering wheel is greatly improved, making it suitable for rapid acceleration and deceleration scenarios.

[0007] Preferably, a central bearing is installed on the outer side of the output helical sun gear, and the central bearing is fixed to the inner side of the side support. The central bearing is used to support the central part of the output helical sun gear and the input shaft to make its structure stable.

[0008] Preferably, the walking drive motor is fixed to one of the fixed plates, and a side support is fixed to the other fixed plate. A positioning block and a distal bearing are provided in the side support.

[0009] Preferably, the distal bearing is installed inside the side support, and the end of the input shaft away from the travel drive motor is inserted into the positioning block, and the positioning block is installed inside the distal bearing. Therefore, when the travel drive motor drives the input shaft to rotate, it will drive the end of the input shaft away from the travel drive motor to rotate inside the distal bearing. Thus, the positioning block and the distal bearing can ensure the stability of the end of the input shaft away from the travel drive motor when rotating.

[0010] Preferably, the steering connection flange is fixed to the upper end face of the two fixing plates, and the steering connection flange is set horizontally.

[0011] Preferably, the outer ring of the slewing bearing meshes with both the spur gear and the inner ring of the slewing bearing, and both the outer ring and the inner ring of the slewing bearing are positioned above the steering connection flange.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. This utility model provides a highly stable steering wheel, which includes two fixed plates and a transmission system and a steering system mounted on the two fixed plates. The overall structure is simple and reasonably designed. The transmission system includes a travel drive motor and a wheel mounted on one side of the travel drive motor. The travel drive motor has an input shaft, and an output helical sun gear, an output helical planet gear, and an output helical ring gear are sequentially arranged on the outer side of the input shaft. The output helical sun gear is fixed to the input shaft, and both the output helical sun gear and the output helical planet gear have helical tooth structures. The output helical planet gear is located between the output helical sun gear and the output helical ring gear, and the output helical planet gear meshes with the output helical sun gear and the output helical ring gear respectively. Therefore, the input shaft... When rotating, it sequentially drives the output helical sun gear, output helical planet gear, and output helical ring gear. The output helical sun gear and output helical planet gear in the transmission system use a helical tooth structure, which improves accuracy. The existing spur planetary gear system has a transmission error of about 20 arcmin, while the helical planetary gear system can achieve a transmission error of 8 arcmin. For a commonly used 250mm wheel diameter steering wheel, the spur system has a travel accuracy of about 0.65mm, while with a 360mm wheel diameter, the helical system has a travel accuracy of about 0.29mm, which is twice as high. In addition, the use of a transmission system with a helical tooth structure significantly reduces the overall noise of the steering wheel, which can meet the requirements of applications with noise restrictions and is suitable for widespread use.

[0014] 2. In this utility model, the two fixed plates are parallel to each other, and the wheel is set between the two fixed plates. Both fixed plates can support the wheel. Therefore, compared with the traditional single-sided support structure, the steering wheel supports the wheel on both sides through the two fixed plates, so the load-bearing capacity is higher. It can maximize the traction capacity of the system and achieve the best match between power and load-bearing capacity. After adopting the double-sided support structure, the overall stability of the steering wheel is greatly improved, and it can be used in rapid acceleration and deceleration scenarios. Attached Figure Description

[0015] Figure 1 This is the front view of the present invention;

[0016] Figure 2 This is one of the schematic diagrams of an embodiment of the present utility model;

[0017] Figure 3 This utility model Figure 1 Sectional view of AA;

[0018] Figure 4 This is one of the schematic diagrams of the transmission system of this utility model;

[0019] Figure 5 This is the second schematic diagram of the transmission system of this utility model;

[0020] Figure 6 This is a second schematic diagram of an embodiment of the present utility model.

[0021] The reference numerals and names in the figure are as follows: 1. Fixed plate; 2. Transmission system; 21. Travel drive motor; 211. Input shaft; 22. Wheel; 23. Output helical sun gear; 24. Output helical planet gear; 25. Output helical ring gear; 26. Center bearing; 27. Side support; 28. Positioning block; 29. ​​Distal bearing; 3. Steering system; 31. Steering connection flange; 32. Steering drive motor; 33. Spur gear; 34. Outer ring of slewing bearing; 35. Inner ring of slewing bearing. Detailed Implementation

[0022] 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.

[0023] In the description of the embodiments of this utility model, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," 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 the embodiments of this utility model and simplifying the description. They 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 utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of this utility model, "multiple" means two or more, unless otherwise explicitly specified.

[0024] In this embodiment of the invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.

[0025] Please see Figure 1 One embodiment of this utility model is a highly stable steering wheel, comprising two fixed plates 1 and a transmission system 2 and a steering system 3 disposed on the two fixed plates 1, wherein the steering system 3 is disposed on one side of the transmission system 2.

[0026] Please see Figure 2 The transmission system 2 includes a wheel 22, two fixed plates 1 that are parallel to each other, and the wheel 22 is positioned between the two fixed plates 1. Both fixed plates 1 can support the wheel 22, thus making the steering wheel have a higher load-bearing capacity and maximizing the traction capacity of the system. This achieves the best match between power and load-bearing capacity. With the adoption of a double-sided support structure, the overall stability of the steering wheel is greatly improved, making it suitable for rapid acceleration and deceleration scenarios.

[0027] Please see Figure 3 The transmission system 2 also includes a travel drive motor 21 located on one side of the wheel 22. The travel drive motor 21 has an input shaft 211. An output helical sun gear 23, an output helical planet gear 24, and an output helical ring gear 25 are sequentially arranged on the outer side of the input shaft 211. The output helical sun gear 23 is fixed to the input shaft 211. Both the output helical sun gear 23 and the output helical planet gear 24 have helical tooth structures, resulting in higher precision. Typically, spur planetary gear systems have a transmission error of approximately 20 arcmin, while helical planetary gear systems can achieve a transmission error of 8 arcmin. For a commonly used 250mm wheel diameter steering wheel, the travel accuracy of a spur system is approximately 0.65mm. However, this solution, with a 360mm wheel diameter, achieves a travel accuracy of approximately 0.29mm for the helical system, doubling the accuracy. In addition, the use of helical gear structure can significantly reduce the overall noise of the steering wheel, which can meet the application scenarios where noise is limited. The travel drive motor 21 is fixed on one of the fixed plates 1, and a side support 27 is fixed on the other fixed plate 1. A positioning block 28 and a remote bearing 29 are set in the side support 27. The remote bearing 29 is installed inside the side support 27. The end of the input shaft 211 away from the travel drive motor 21 is inserted into the positioning block 28, and the positioning block 28 is installed inside the remote bearing 29. Therefore, when the travel drive motor 21 drives the input shaft 211 to rotate, it will drive the end of the input shaft 211 away from the travel drive motor 21 to rotate inside the remote bearing 29. Therefore, the positioning block 28 and the remote bearing 29 can ensure the stability of the end of the input shaft 211 away from the travel drive motor 21 when rotating.

[0028] Please see Figure 4The output helical planetary gear 24 is positioned between the output helical sun gear 23 and the output helical ring gear 25, and the output helical planetary gear 24 meshes with the output helical sun gear 23 and the output helical ring gear 25 respectively. Therefore, when the input shaft 211 rotates, it can sequentially drive the output helical sun gear 23, the output helical planetary gear 24 and the output helical ring gear 25 to rotate.

[0029] Please see Figure 5 A central bearing 26 is installed on the outer side of the output helical sun gear 23. The central bearing 26 is fixed to the inner side of the side support 27. The central bearing 26 is used to support the central part of the output helical sun gear 23 and the input shaft 211 to make its structure stable.

[0030] Please see Figure 6 The steering system 3 includes a steering connection flange 31 and a steering drive motor 32 fixed to the lower end face of the steering connection flange 31. The steering connection flange 31 is fixed to the upper end face of two fixing plates 1 and is horizontally arranged. The output end of the steering drive motor 32 is connected to a spur gear 33. At the end of the spur gear 33 away from the steering drive motor 32, a slewing bearing outer ring 34 and a slewing bearing inner ring 35 are arranged in sequence. The slewing bearing outer ring 34 meshes with the spur gear 33 and the slewing bearing inner ring 35 respectively. The slewing bearing outer ring 34 and the slewing bearing inner ring 35 are both arranged above the steering connection flange 31.

[0031] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A highly stable steering wheel, characterized in that: It includes two fixed plates (1) and a transmission system (2) and a steering system (3) disposed on the two fixed plates (1), wherein the steering system (3) is disposed on one side of the transmission system (2); The transmission system (2) includes a walking drive motor (21) and a wheel (22) disposed on one side of the walking drive motor (21). The walking drive motor (21) is provided with an input shaft (211). An output helical sun gear (23), an output helical planet gear (24) and an output helical ring gear (25) are arranged sequentially on the outer side of the input shaft (211). The output helical sun gear (23) is fixed on the input shaft (211). Both the output helical sun gear (23) and the output helical planet gear (24) have helical tooth structures. The output helical planet gear (24) is disposed between the output helical sun gear (23) and the output helical ring gear (25). The output helical planet gear (24) meshes with the output helical sun gear (23) and the output helical ring gear (25) respectively. The steering system (3) includes a steering connection flange (31) and a steering drive motor (32) fixed to the lower end face of the steering connection flange (31). The output end of the steering drive motor (32) is connected to a spur gear (33). The end of the spur gear (33) away from the steering drive motor (32) is provided with a slewing bearing outer ring (34) and a slewing bearing inner ring (35) in sequence.

2. The highly stable steering wheel according to claim 1, characterized in that: The two fixed plates (1) are parallel to each other, and the wheel (22) is disposed between the two fixed plates (1).

3. A highly stable steering wheel according to claim 1, characterized in that: A central bearing (26) is mounted on the outer side of the output helical sun gear (23), and the central bearing (26) is fixed to the inner side of the side support (27).

4. A highly stable steering wheel according to claim 1, characterized in that: The walking drive motor (21) is fixed on one of the fixed plates (1), and a side support (27) is fixed on the other fixed plate (1). The side support (27) is provided with a positioning block (28) and a distal bearing (29).

5. A highly stable steering wheel according to claim 4, characterized in that: The distal bearing (29) is installed inside the side support (27), and the end of the input shaft (211) away from the walking drive motor (21) is inserted into the positioning block (28), and the positioning block (28) is installed inside the distal bearing (29).

6. A highly stable steering wheel according to claim 1, characterized in that: The steering connection flange (31) is fixed to the upper end face of the two fixing plates (1), and the steering connection flange (31) is set horizontally.

7. A highly stable steering wheel according to claim 1, characterized in that: The outer ring (34) of the slewing bearing meshes with the spur gear (33) and the inner ring (35) of the slewing bearing, respectively. Both the outer ring (34) and the inner ring (35) of the slewing bearing are located above the steering connection flange (31).

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