Servo steering wheel

Abstract

The utility model provides a kind of servo steering rudder wheel, it is related to steering rudder wheel technical field, comprising: support assembly, the support assembly includes mounting plate, bottom plate and slewing bearing, the slewing bearing includes inner ring and outer ring with outer gear, the outer ring is rotatably connected with the inner ring, the outer ring of the slewing bearing is connected with the bottom plate, and the inner ring is connected with the mounting plate;Wheel structure is connected with the bottom plate.The utility model has the beneficial effects: through the vertical connection arrangement of support assembly, wheel structure and drive component, the rudder wheel rotation radius is smaller compared with traditional driving mode, while the installation height of the rudder wheel on vehicle body can be reduced;Secondly, the double-wheel layout of wheel in wheel structure and the stable connection mode of mandrel assembly ensure the stability of wheel in the process of rotation, avoid loose phenomenon, effectively prolong the service life of rudder wheel, solve the problem of poor wheel installation stability in multi-wheel rudder wheel system.

Description

Technical Field

[0001] This utility model relates to the field of steering wheel technology, and in particular to a servo steering wheel. Background Technology

[0002] In the field of modern industrial transportation and automation equipment, steering wheels are widely used as key components in various AGV forklifts and other equipment. However, existing steering wheels have some shortcomings.

[0003] From a structural design perspective, many traditional steering wheels have relatively complex structures and a less compact overall layout, resulting in a larger turning radius. In some space-constrained operating environments, such as narrow passages or areas requiring frequent turning, the maneuverability and flexibility of the equipment are limited, making it difficult to flexibly change the direction and position of travel.

[0004] Furthermore, in terms of maintainability, conventional steering wheel designs use a forward-mounted configuration for the steering motor and steering measurement encoder. If these components fail, replacement often requires disassembling the entire wheel assembly. This not only increases the complexity and time cost of maintenance but also necessitates specialized personnel, reducing the maintainability and efficiency of the equipment. Moreover, the lack of independence in the design of the wheel axle assembly and support components makes axle disassembly difficult, hindering rapid on-site wheel replacement. This further impacts the equipment's recovery speed and normal operation in case of failure. Existing steering wheels have significant deficiencies in terms of structural compactness and maintainability, making it difficult to meet the high-efficiency, stable, and precise operation requirements of AGVs, forklifts, and other equipment under complex and variable working conditions. Utility Model Content

[0005] In view of this, an embodiment of the present invention provides a servo steering wheel.

[0006] An embodiment of this utility model provides a servo steering wheel, comprising:

[0007] A support assembly includes a mounting plate, a base plate, and a slewing bearing. The slewing bearing includes an inner ring and an outer ring with external teeth. The outer ring is rotatably connected to the inner ring. The outer ring of the slewing bearing is connected to the base plate, and the inner ring is connected to the mounting plate.

[0008] A wheel structure connected to the base plate, the wheel structure including a wheel and a spindle assembly, the spindle assembly passing through the wheel and detachably connected to the support assembly; and

[0009] A drive assembly is vertically mounted above the mounting plate. The drive assembly includes a drive element and a steering gear. The steering gear is connected to the output end of the drive element and meshes with the outer ring. The drive element drives the steering gear to rotate, which in turn drives the outer ring of the slewing bearing to rotate, thereby driving the wheel structure to turn.

[0010] Furthermore, the support assembly also includes three support plates: a support plate on the left side is the left support plate, a support plate on the right side is the right support plate, and a support plate in the middle is the middle support plate. The three support plates are connected to the base plate through upright plates.

[0011] Furthermore, the number of wheels is two, and the two wheels are distributed between the gaps of the three support plates.

[0012] Furthermore, the spindle assembly includes a supporting spindle that passes through both wheels and is mounted on the right support plate via a spindle pressure plate.

[0013] Furthermore, the left support plate is provided with a spindle locking plate, and the end of the support spindle away from the right support plate is connected to the spindle locking plate by a locking screw.

[0014] Furthermore, the support spindle is provided with a spacer and a bearing component on its exterior, and the wheel is connected to the bearing component.

[0015] Furthermore, the bearing component is a deep groove ball bearing, which is disposed on the inner side of the left support plate or the right support plate and the middle support plate.

[0016] Furthermore, the driving component includes a servo steering motor and a steering reducer. The steering reducer is fixed to the mounting plate by screws, and the servo steering motor is fixed to the housing of the steering reducer by screws. The output shaft of the servo steering motor is connected to the input shaft of the steering reducer, and the output shaft of the steering reducer is connected to the steering gear.

[0017] Furthermore, the output end of the steering reducer is provided with a gear locking plate, and the outer periphery of the steering gear is provided with a through hole. By passing a screw through the through hole and connecting it to the gear locking plate, the steering reducer is connected to the steering gear.

[0018] Furthermore, the mounting plate is provided with a steering encoder assembly, which includes a steering encoder and a measuring gear. The measuring gear meshes with the outer ring of the slewing bearing, and the input end of the steering encoder is connected to the measuring gear.

[0019] The beneficial effects of the technical solution provided by the embodiments of this utility model are as follows: The servo steering wheel of this utility model, through the vertical connection and arrangement of the support component, wheel structure, and drive component, reduces the turning radius of the steering wheel compared to traditional drive methods, while also reducing the installation height of the steering wheel on the vehicle body. Secondly, the dual-wheel layout of the wheels in the wheel structure and the stable connection of the spindle assembly ensure the stability of the wheels during rotation, avoid loosening, effectively extend the service life of the steering wheel, and solve the problem of poor wheel installation stability in multi-wheel steering wheel systems. Finally, the steering encoder component on the mounting plate can accurately measure the steering angle of the wheel structure, providing reliable data support for the precise steering control of the steering wheel, further improving the intelligence level and steering accuracy of the steering wheel, and possessing good market prospects and practical value. Attached Figure Description

[0020] Figure 1 This is a longitudinal cross-sectional view of the servo steering wheel of this utility model;

[0021] Figure 2 This is a front view of the servo steering wheel of this utility model;

[0022] Figure 3 This is an axonometric view of the servo steering wheel of this utility model.

[0023] In the diagram: 100, Support assembly; 1, Mounting plate; 2, Slewing bearing; 3, Base plate; 4, Right support plate; 5, Vertical plate; 6, Left support plate; 7, Middle support plate; 200, Mandrel assembly; 8, Support mandrel; 9, Mandrel pressure plate; 10, Mandrel locking plate; 11, Locking screw; 12, Spacer; 13, Deep groove ball bearing; 14, Wheel; 300, Drive assembly; 15, Steering gear; 16, Gear locking plate; 17, Steering reducer; 18, Servo steering motor; 19, Measuring gear; 20, Steering encoder. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be further described below with reference to the accompanying drawings. The following description presents a preferred embodiment of several possible embodiments of this utility model, intended to provide a basic understanding of the utility model, but not intended to identify the key or decisive elements of the utility model or to limit the scope of protection sought.

[0025] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0026] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0027] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures. Also, it should be understood that, for ease of description, the dimensions of the various parts shown in the figures are not drawn to actual scale.

[0028] In the description of this utility model, it should be noted that the circuits, electronic components and modules involved in this utility model are all existing technologies, which can be fully implemented by those skilled in the art, and need not be elaborated. The content protected by this utility model does not involve any improvement to the internal structure and method.

[0029] It should be further noted that, unless otherwise explicitly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0030] Please refer to Figure 1 An embodiment of this utility model provides a servo steering steering wheel including a support assembly 100, a wheel structure, and a drive assembly 300. The drive assembly 300 is used to drive the wheel structure located on the support assembly 100 to steer.

[0031] Among them, the support assembly 100, as the support part of the entire steering wheel, can be made of high-strength metal material to ensure the stability of the support, including mounting plate 1, base plate 3 and slewing bearing 2.

[0032] The slewing bearing 2 is a connecting component that enables steering. It includes an inner ring and an outer ring, which are rotatably connected to the inner ring. The inner ring is connected to the mounting plate 1, and the outer ring is connected to the wheel structure through the base plate 3. The outer ring is provided with external teeth for transmission connection with the drive assembly 300.

[0033] Please refer to Figure 3 In this embodiment, the drive assembly 300 is vertically mounted above the mounting plate 1 and consists of a servo steering motor 18 and a steering reducer 17. The steering reducer 17 is fixed to the mounting plate 1 with screws, and the servo steering motor 18 is fixed to the housing of the steering reducer 17 with screws. The output shaft of the servo steering motor 18 is connected to the input shaft of the steering reducer 17, and the output shaft of the steering reducer 17 is connected to the steering gear 15.

[0034] By arranging the drive assembly 300 and the slewing bearing 2 in the vertical direction, the wheel 14 can rotate 360°, and the turning radius is smaller than that of the traditional drive method. At the same time, the installation height of the steering wheel on the vehicle body can be reduced, thereby improving the passability of the AGV.

[0035] Furthermore, since the steering reducer 17 and the servo steering motor 18 are fixed to the mounting plate 1, there is no relative rotation between the steering reducer 17 and the servo steering motor 18 and the vehicle body, thus eliminating the risk of the motor cable being worn and broken during the rotation of the wheel 14.

[0036] When a steering operation is required, the servo steering motor 18 starts, and through the deceleration and torque amplification effect of the steering reducer 17, it drives the steering gear 15 to rotate. The steering gear 15 meshes with the external teeth on the outer ring of the slewing bearing 2, thereby driving the outer ring of the slewing bearing 2 to rotate, and thus driving the wheel structure to achieve the steering function.

[0037] To ensure the reliability of the connection between the steering gear 15 and the steering reducer 17, a gear locking plate 16 is provided at the output end of the steering reducer 17. The outer periphery of the steering gear 15 is provided with a through hole. A screw is passed through the through hole and connected to the gear locking plate 16 to achieve a tight connection between the two.

[0038] In an optional embodiment, the support assembly 100 further includes three support plates: a left support plate 6 located on the left, a right support plate 4 located on the right, and a middle support plate 7 located in the middle. The three support plates are connected to the base plate 3 via a vertical plate 5.

[0039] In an optional embodiment, the wheel structure has two wheels 14, which are distributed in the gaps between the three support plates (left support plate 6, right support plate 4, and middle support plate 7). This layout can reasonably arrange the position of the wheels 14 in a limited space and improve the overall compactness of the steering wheel.

[0040] In this embodiment, the spindle assembly 200 includes a supporting spindle 8, which passes through the two wheels 14 and is fixed to the right support plate 4 by a spindle pressure plate 9. Meanwhile, the spindle locking piece 10 on the left support plate 6 is connected to one end of the supporting spindle 8 by a locking screw 11, thereby firmly setting the wheels 14 on the support assembly 100 and ensuring that the wheels 14 will not loosen or shift during rotation.

[0041] Understandably, the mandrel pressure plate 9 is equipped with set screws to facilitate the disassembly of the mandrel 8.

[0042] In this way, the spindle can be designed independently, and when the wheel 14 needs to be repaired or replaced, the supporting spindle 8 can be removed and the wheel 14 can be replaced without disassembling other structural components, making on-site maintenance operations more convenient.

[0043] In addition, the support spindle 8 is provided with a spacer 12 and a deep groove ball bearing 13 on its outside. The wheel 14 is connected to the deep groove ball bearing 13. The deep groove ball bearing 13 is respectively set on the inner side of the left support plate 6, the right support plate 4 and the middle support plate 7. This design can effectively reduce the frictional resistance when the wheel 14 rotates, ensure the smooth rotation of the wheel 14, and the spacer 12 can play a certain role in spacing and support, further improving the stability of the wheel 14 installation.

[0044] In addition, a steering encoder assembly is provided on the mounting plate 1, including a steering encoder 20 and a measuring gear 19. The measuring gear 19 meshes with the outer ring of the slewing bearing 2, and the input end of the steering encoder 20 is connected to the measuring gear 19. This allows for accurate measurement of the rotation angle of the outer ring of the slewing bearing 2, thereby accurately obtaining the steering angle information of the wheel structure and providing feedback data for the precise steering control of the steering wheel.

[0045] It should be noted that in this embodiment of the utility model, the positioning of each support and structural component is achieved by using cylindrical pins, and the deep groove ball bearing 13 has a sealing structure.

[0046] In this document, the directional terms such as front, back, top, and bottom are defined based on the position of the components in the accompanying drawings and their relative positions to each other, solely for the purpose of clarity and convenience in expressing the technical solution. It should be understood that these are relative concepts and can vary depending on different methods of use and placement; the use of these directional terms should not limit the scope of protection claimed in this application.

[0047] Where there is no conflict, the above embodiments and features described herein can be combined with each other.

[0048] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. 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 servo steering wheel, characterized in that, include: Support assembly (100), the support assembly (100) includes mounting plate (1), base plate (3) and slewing bearing (2), the slewing bearing (2) includes an inner ring and an outer ring with external teeth, the outer ring is rotatably connected to the inner ring, the outer ring of the slewing bearing (2) is connected to the base plate (3) and the inner ring is connected to the mounting plate (1); A wheel structure connected to the base plate (3), the wheel structure including a wheel (14) and a spindle assembly (200), the spindle assembly passing through the wheel (14) and detachably connected to the support assembly (100); and A drive assembly (300) is vertically disposed above the mounting plate (1); the drive assembly (300) includes a drive member and a steering gear (15), the steering gear (15) is connected to the output end of the drive member, the steering gear (15) meshes with the outer ring, the drive member drives the steering gear (19) to rotate, the steering gear (15) drives the outer ring of the slewing bearing (2) to rotate, so that the wheel structure is driven to turn.

2. The servo steering wheel as described in claim 1, characterized in that: The support assembly (100) also includes three support plates: the support plate on the left is the left support plate (6), the support plate on the right is the right support plate (4), and the support plate in the middle is the middle support plate (7). The three support plates are connected to the base plate (3) through the upright plate (5).

3. The servo steering wheel as described in claim 2, characterized in that: The number of wheels (14) is two, and the two wheels (14) are distributed between the gaps of the three support plates.

4. The servo steering wheel as described in claim 3, characterized in that: The spindle assembly (200) includes a supporting spindle (8) which passes through both wheels (14) and is mounted on the right support plate (4) via a spindle pressure plate (9).

5. The servo steering wheel as described in claim 4, characterized in that: The left support plate (6) is provided with a spindle locking piece (10), and the end of the support spindle (8) away from the right support plate (4) is connected to the spindle locking piece (10) by a locking screw (11).

6. The servo steering wheel as described in claim 4, characterized in that: The support spindle (8) is provided with a spacer (12) and a bearing component on its outside, and the wheel (14) is connected to the bearing component.

7. The servo steering wheel as described in claim 6, characterized in that: The bearing component is a deep groove ball bearing (13), which is disposed on the inner side of the left support plate (6) or the right support plate (4) and the middle support plate (7).

8. The servo steering wheel as described in claim 1, characterized in that: The drive unit includes a servo steering motor (18) and a steering reducer (17). The steering reducer (17) is fixed to the mounting plate (1) by screws. The servo steering motor (18) is fixed to the housing of the steering reducer (17) by screws. The output shaft of the servo steering motor (18) is connected to the input shaft of the steering reducer (17). The output shaft of the steering reducer (17) is connected to the steering gear (15).

9. The servo steering wheel as described in claim 8, characterized in that: The output end of the steering reducer (17) is provided with a gear locking plate (16), and the outer periphery of the steering gear (15) is provided with a through hole. By passing a screw through the through hole and connecting it to the gear locking plate (16), the steering reducer (17) is connected to the steering gear (15).

10. The servo steering wheel as described in claim 1, characterized in that: The mounting plate (1) is provided with a steering encoder assembly, which includes a steering encoder (20) and a measuring gear (19). The measuring gear (19) meshes with the outer ring of the slewing bearing (2), and the input end of the steering encoder (20) is connected to the measuring gear (19).

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