Electric-cylinder-driven steering wheel driven by gear and rack

Abstract

The utility model discloses a gear and rack driven steering wheel driven by an electric cylinder, which belongs to the technical field of steering structures and comprises a steering component, a driving component and a power walking component. The steering assembly is connected with the power walking assembly; the driving assembly is used for driving the steering assembly to achieve stable steering action and driving the power walking assembly to change the movement direction. The power walking assembly comprises a power motor and walking wheels, wherein the power motor is used for driving the walking wheels to move. The gear and rack driven steering wheel driven by the electric cylinder can effectively solve the problems that a traditional steering mechanism in the prior art is unstable in steering and the like.

Description

Technical Field

[0001] This utility model belongs to the field of steering structure technology. Specifically, it relates to a gear and rack driven steering wheel with an electric cylinder. Background Technology

[0002] In the field of mechanical transmission, the steering mechanism, as a crucial component of vehicles and mechanical equipment, directly impacts the equipment's maneuverability, stability, and operational efficiency. Traditional steering mechanisms typically employ linkage mechanisms, which suffer from the following problems: the steering process is not smooth, easily generating vibration and noise; they lack sufficient strength and rigidity, making it difficult to withstand high-load operation under heavy conditions. Under heavy loads, the steering mechanism is prone to deformation, wear, and even damage, severely affecting the equipment's stability and safety; and their complex structure occupies a large amount of space. Utility Model Content

[0003] The purpose of this invention is to address the aforementioned shortcomings by providing an electrically driven rack and pinion steering wheel, thus solving problems such as unstable steering in traditional steering mechanisms. To achieve this objective, this invention provides the following technical solution:

[0004] A gear and rack driven steering wheel driven by an electric cylinder includes a steering assembly, a drive assembly, and a power travel assembly; the steering assembly is connected to the power travel assembly; the drive assembly is used to drive the steering assembly to achieve smooth steering action and drive the power travel assembly to change the direction of movement; the power travel assembly includes a power motor and a travel wheel, wherein the power motor is used to drive the travel wheel to move.

[0005] Furthermore, the steering assembly includes a bearing housing, a bearing, and a cylindrical gear; the bearing housing is fixedly connected to the vehicle body; the cylindrical gear is connected to the bearing housing via the bearing, enabling the cylindrical gear to rotate relative to the vehicle body.

[0006] Furthermore, the drive assembly includes an electric push rod and a rack; the rack meshes with a cylindrical gear; the electric push rod drives the rack to perform linear motion, thereby causing the cylindrical gear to rotate.

[0007] Furthermore, the bearing housing is provided with a connecting plate; a rack positioning structure is connected to the connecting plate; the connecting plate is also provided with a waist hole, through which the cylindrical gear part passes and meshes with the rack.

[0008] Furthermore, the rack positioning structure includes two fixing blocks, which are fixedly connected to the connecting plate; the two fixing blocks are provided with through holes, and the top and bottom of the through holes are provided with fixing sliders; the upper and lower ends of the rack are provided with slide rails that cooperate with the fixing sliders, passing through the through holes in the two fixing blocks and cooperating with the fixing sliders.

[0009] Furthermore, the electric push rod includes a fixed part and a telescopic part; the fixed part is fixedly connected to the connecting plate by connecting to a fixed block; the telescopic part has a connecting block at its end; the connecting block is fixedly connected to one end of the rack.

[0010] Furthermore, the electric push rod is arranged adjacent to and parallel to the rack.

[0011] Furthermore, the bearing is a one-way thrust ball bearing.

[0012] Furthermore, a limiting block is provided at the end of the rack away from the connecting block to prevent the rack from detaching from the fixing block.

[0013] Furthermore, the walking wheel is equipped with a rubber tire with an irregular groove structure on its surface.

[0014] The beneficial effects of this utility model are:

[0015] This utility model discloses an electric cylinder-driven gear and rack steering wheel. The gear and rack structure is used to realize the steering action of the traveling wheel. Due to the linear relationship of the gear and rack, the steering is smoother, the force and steering pressure are constant, and the stability is better. The use of a one-way thrust ball bearing can withstand a large unidirectional axial load, which enables it to perform well in various heavy-duty applications. The electric push rod and the rack are arranged adjacent to each other in parallel, which further saves space. Attached Figure Description

[0016] Figure 1 This is a front view of the present utility model;

[0017] Figure 2 for Figure 1 Cross-sectional view in the cc direction;

[0018] Figure 3 This is a top view of the present invention;

[0019] In the attached diagram: 1. Power motor; 2. Traveling wheel; 3. Bearing housing; 4. Bearing; 5. Cylindrical gear; 6. Electric push rod; 7. Rack; 8. Connecting plate; 9. Fixing block; 10. Slide rail; 11. Connecting block. Detailed Implementation

[0020] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed present invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0021] It should be noted that similar reference numerals and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the figures, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance. In addition, the terms "horizontal," "vertical," etc., do not indicate that the component is required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted. In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" 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.

[0022] Example:

[0023] See attached Figures 1-3This embodiment provides an electric cylinder-driven rack and pinion steering wheel. Its traveling wheel 2 integrates a power motor 1 and a wheel, capable of power output and walking motion. Its structure is readily available to those skilled in the art and will not be described in detail here. A mounting plate extends upward from the fixed end of the power motor 1, connecting to a steering assembly. This steering assembly drives the traveling wheel 2 to achieve steering. Specifically, the steering assembly includes a bearing housing 3, a bearing 4, and a cylindrical gear 5. One side of the cylindrical gear 5 is fixedly connected to the mounting plate, ensuring the mounting plate's position does not interfere with the traveling wheel 2's movement. The other side of the cylindrical gear 5 is connected to the bearing housing 3 via the bearing 4, allowing the cylindrical gear 5 to rotate relative to the bearing housing 3. The bearing housing 3 is fixedly connected to the vehicle body via screws or other structures. The rotation of the cylindrical gear 5 drives the traveling wheel 2 to achieve steering.

[0024] The drive assembly is used to drive the cylindrical gear 5 to rotate. The specific drive assembly includes an electric push rod 6 and a rack 7. The rack 7 is designed to mesh with the cylindrical gear 5. The electric push rod 6 is connected to the rack 7 to drive the rack 7 to move linearly, thereby driving the meshing cylindrical gear 5 to rotate, thus realizing the action of the cylindrical gear 5 driving the traveling wheel 2 to turn.

[0025] As shown in the attached diagram, a connecting plate 8 is provided on the bearing housing 3. The connecting plate 8 extends downward from one side of the bearing housing 3 and has a slotted hole to reserve the installation position of the cylindrical gear 5. The movement of the cylindrical gear 5 is not interfered with by the connecting plate 8. A rack 7 positioning structure is fixedly connected to the connecting plate 8, and an electric push rod 6 is fixedly connected to the other side of the rack 7 positioning structure, thus fixing the electric push rod 6 and the rack 7 positioning structure to the bearing housing 3.

[0026] Preferably, the positioning structure of the rack 7 includes two fixing blocks 9, which are spaced apart along the length of the rack 7 and fixed on the connecting plate 8. The two fixing blocks 9 have through holes inside, and fixed sliders are provided at the top and bottom of the through holes. Correspondingly, slide rails 10 that cooperate with the fixed sliders are provided on the upper and lower sides of the rack 7. The rack 7 passes through the through holes of the two fixing blocks 9 in sequence and is connected with the fixed sliders. The two fixing blocks 9 limit the movement of the rack 7, making its meshing movement with the cylindrical gear 5 more stable.

[0027] Further optimization of the space between the electric actuator 6 and the rack 7 is achieved by preferably arranging the electric actuator 6 and the rack 7 adjacent and parallel. The electric actuator 6 includes a fixed part and a telescopic part. The fixed part is fixedly connected to the connecting plate 8 via a fixing block 9. The telescopic part is telescopically connected to the fixed part. A connecting block 11 is provided at the other end of the telescopic part. The connecting block 11 is also fixedly connected to one end of the rack 7. The electric actuator 6 and the rack 7 are located on the same side of the connecting block 11. As shown in the attached figure, arranging the electric actuator 6 and the rack 7 adjacent and parallel makes the structure more compact and the space occupied more rationally. The structure of the fixed part and the telescopic part of the electric actuator 6 is technical content known to those skilled in the art and will not be described in detail here.

[0028] Preferably, a limiting stop is provided on a fixed block 9 located away from the connecting block 11 to prevent the rack 7 from disengaging from the fixed block 9 during movement. The traveling wheel 2 uses rubber tires, and its outer surface has an irregular groove structure to prevent slippage and improve safety.

[0029] The bearing 4 connected to the cylindrical gear 5 is a one-way thrust ball bearing 4. The one-way thrust ball bearing 4 has advantages such as small size, light weight, and strong load capacity, making it superior in load bearing and suitable for heavy-duty applications. Its light weight further reduces the overall size of the equipment and transportation costs. This invention, in conjunction with the one-way thrust ball bearing 4, can withstand high-load operation in heavy-duty scenarios.

[0030] This utility model discloses an electric cylinder-driven rack and pinion steering wheel. The linear motion of the rack 7 driven by the electric push rod 6 is converted into the rotational motion of the cylindrical gear 5 driving the traveling wheel 2, thereby realizing the steering operation. Due to the linear relationship of the rack and pinion 7, the steering is smoother, the force and steering pressure are constant, and the stability is better. An external controller can be connected to automatically control the operation of the electric push rod 6 to realize automatic operation. The use of the one-way thrust ball bearing 4 can be used in heavy-duty scenarios. The overall structure is simple and saves space.

[0031] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural or procedural transformations made based on the content of the present utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present utility model.

Claims

1. A gear and rack driven steering wheel with an electric cylinder, characterized in that: It includes a steering component, a drive component, and a power walking component; the steering component is connected to the power walking component; the drive component is used to drive the steering component to achieve smooth steering action and drive the power walking component to change the direction of movement; the power walking component includes a power motor (1) and a walking wheel (2), wherein the power motor (1) is used to drive the walking wheel (2) to move.

2. The electric cylinder-driven rack and pinion steering wheel according to claim 1, characterized in that: The steering assembly includes a bearing housing (3), a bearing (4), and a cylindrical gear (5); the bearing housing (3) is fixedly connected to the vehicle body; the cylindrical gear (5) is connected to the bearing housing (3) through the bearing (4) to realize the rotation of the cylindrical gear (5) relative to the vehicle body.

3. The electric cylinder-driven rack and pinion steering wheel according to claim 2, characterized in that: The drive assembly includes an electric push rod (6) and a rack (7); the rack (7) meshes with a cylindrical gear (5); the electric push rod (6) drives the rack (7) to make linear motion, thereby driving the cylindrical gear (5) to rotate.

4. A gear and rack driven steering wheel driven by an electric cylinder according to claim 3, characterized in that: The bearing housing (3) is provided with a connecting plate (8); the connecting plate (8) is connected with a rack (7) positioning structure; the connecting plate (8) is also provided with a waist hole, through which the cylindrical gear (5) passes and meshes with the rack (7).

5. A gear and rack driven steering wheel driven by an electric cylinder according to claim 4, characterized in that: The rack (7) positioning structure includes two fixing blocks (9), which are fixedly connected to the connecting plate (8); the two fixing blocks (9) are provided with through holes, and the top and bottom of the through holes are provided with fixed sliders; the upper and lower ends of the rack (7) are provided with slide rails (10) that cooperate with the fixed sliders, which pass through the through holes in the two fixing blocks (9) and cooperate with the fixed sliders.

6. A gear and rack driven steering wheel driven by an electric cylinder according to claim 5, characterized in that: The electric push rod (6) includes a fixed part and a telescopic part; the fixed part is fixedly connected to the connecting plate (8) by connecting to the fixed block (9); the telescopic part is provided with a connecting block (11) at the end; the connecting block (11) is fixedly connected to one end of the rack (7).

7. A gear and rack driven steering wheel driven by an electric cylinder according to claim 6, characterized in that: The electric push rod (6) and the rack (7) are arranged adjacent to each other and parallel.

8. A gear and rack driven steering wheel driven by an electric cylinder according to claim 7, characterized in that: The bearing (4) is a one-way thrust ball bearing (4).

9. A gear and rack driven steering wheel driven by an electric cylinder according to claim 8, characterized in that: The rack (7) is provided with a limiting block at the end away from the connecting block (11) to prevent the rack (7) from detaching from the fixing block (9).

10. A gear and rack driven steering wheel driven by an electric cylinder according to claim 9, characterized in that: The walking wheel (2) is equipped with a rubber tire, and its surface is provided with an irregular groove structure.

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