Steering wheel assembly for special industry

Abstract

The utility model discloses a steering wheel assembly for special industries, which is characterized by comprising a mounting plate, the mounting plate is fixed on a frame body, the lower side surface of the mounting plate is connected with a rotary gear through a bearing, the outer ring of the rotary gear is provided with a connecting plate, the lower side of the connecting plate is provided with a reduction gearbox, and the reduction gearbox is connected with a wheel; a steering motor is arranged on one side of one square end of the mounting plate, a speed reducer is mounted on a steering motor fixing seat, a shell of the speed reducer is fixedly connected with the mounting plate, an output shaft of the steering motor is fixedly connected with an input shaft of the speed reducer, and an output shaft of the speed reducer is fixedly connected with a steering pinion. The steering pinion is meshed with the rotary gear; and the steering motor is mounted on the speed reducer. The utility model relates to the technical field of steering wheels, in particular to a steering wheel assembly for special industries. The technical problem to be solved by the utility model is to provide the steering wheel assembly for the special industry, which is favorable for realizing the use of a steering wheel.

Description

Technical Field

[0001] The utility model relates to the technical field of steering wheels, in particular to a steering wheel assembly for special industries. Background Art

[0002] As the core component of electric industrial vehicles, the steering wheel assembly integrates key components such as the travel motor, steering motor, reduction gearbox, wheels, brakes, and slewing gear, which determines the power and operating performance of the entire vehicle.

[0003] Similar products currently on the market: First, due to limitations in processing technology and design, they are generally made of commercially manufactured reducers and synchronous belts, resulting in a bloated structure and a large turning radius. In special environments such as the construction industry, where space is limited, they are not suitable for large industrial vehicle robots. Therefore, the installed steering wheel is required to be miniaturized, with requirements for installation height and turning radius. Second, the steering structure is exposed and key parts are not sealed. In special environments, it is easy for cement, mud, sand, etc. to invade, causing damage to the performance and use of the steering wheel. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a steering wheel assembly for special industries, which is conducive to the use of the steering wheel.

[0005] The utility model adopts the following technical solutions to achieve the purpose of the invention:

[0006] A steering wheel assembly for special industries is characterized in that it includes a mounting plate: the mounting plate is fixed to the vehicle frame, the lower side bearing of the mounting plate is connected to the rotating gear, the outer ring of the rotating gear is installed with a connecting plate, the lower side of the connecting plate is installed with a reduction gear, and the reduction gear is connected to the wheel; a steering motor is provided on one side of one square end of the mounting plate, a reduction gear is installed on the steering motor fixing seat, the housing of the reduction gear is fixedly connected to the mounting plate, the output shaft of the steering motor is fixedly connected to the input shaft of the reduction gear, the output shaft of the reduction gear is fixedly connected to the steering pinion, and the steering pinion meshes with the rotating gear; the steering motor is installed on the reduction gear, when the steering wheel turns, the steering motor rotates to drive the steering pinion to rotate, so that the outer ring of the rotating gear rotates and thereby drives the connecting plate to rotate, and the connecting plate drives the reduction gear wheel to rotate; because the mounting plate is rigidly fixed to the vehicle frame, the steering motor does not move when the steering wheel turns, and only the reduction gear box and the wheel on the connecting plate rotate, thereby reducing the turning radius.

[0007] As a further limitation of the present technical solution, a protective cover is installed between the connecting plate and the mounting plate, and the protective cover is installed on the mounting plate and connected with screws.

[0008] As a further limitation of the present technical solution, the protective cover is divided into two halves for easy installation, and a separately designed L-shaped sealing ring is installed at the joint of the two halves of the protective cover to fit tightly with the protective cover. A notch is provided at the relative position of the protective cover and the steering motor fixing seat. After the protective cover is installed, it fits with the notch of the steering motor fixing seat to form a seal. The connecting plate is designed to be circular, and a skeleton oil seal is added between the connecting plate and the protective cover to perform a sealing function.

[0009] As a further limitation of the present technical solution, a nylon sheath is provided in the middle of the rotating gear, the nylon sheath is installed on the connecting plate, and an O-ring is installed on the nylon sheath to contact the inner ring of the rotating gear to act as a seal; this design enables the rectification rotating mechanism to constitute a relatively sealed closed space, ensuring that foreign matter such as dust and mud cannot enter.

[0010] As a further limitation of the present technical solution, the reducer adopts a flat design including a box cover and a box body; the reducer is fixedly connected to the walking motor, the reducer is vertically mounted on the connecting plate and offset to one side of the edge of the connecting plate, and a total of three stages of reduction are adopted, the first stage reduction, the second stage reduction and the third stage adopt planetary reducers; the first stage reduction and the second stage reduction adopt helical gears arranged in parallel in the reducer, the planetary reducer is installed on the reducer and arranged parallel to the walking motor, and the wheel is fixedly connected to the output shaft of the planetary reducer. The wheels are installed on a separately designed planetary reducer to form a cantilever structure. The design of the reducer can not only increase the reduction ratio of the steering wheel, but also make the structure of the steering wheel compact and reduce the installation height. The travel motor is installed on the reducer above the planetary reducer. The travel motor, planetary reducer, and wheels are all located on one side of the reducer, so that the overall structure does not exceed the diameter range of the rotating gear and the rotating radius is further compressed. The travel motor is connected to the driving teeth in the first reduction gear group, and the input shaft of the planetary reducer is connected to the driven gear in the second stage reduction. When the travel motor rotates, it drives the first and second stage reduction gear groups, thereby driving the planetary reducer of the third stage reduction to rotate, and the planetary reducer drives the wheels installed on it to rotate.

[0011] As a further limitation of the present technical solution, the reducer is fixedly connected to the brake, and the brake is installed on the outside of the reducer cover opposite the travel motor, and is connected to the output shaft of the travel motor with a flat key, abandoning the sealing method of exposed protective sleeves used in the traditional market. The protective sleeves of traditional brakes have weak protective capabilities, and impurities, mud, etc. can easily enter the inside of the brake, which is not suitable for the harsh environment of special industries. Therefore, the brake is modified so that the exposed part of the brake does not need to be protected by a protective sleeve; the outside of the reducer cover is processed into a cavity, and the exposed part of the brake is installed in the cavity on the outside of the reducer cover. After the stator of the brake is modified, an O-ring is installed to form a closed space in the cavity between the brake stator and the cover, so that impurities, mud, etc. cannot enter the inside of the brake.

[0012] Compared with the related art, the steering wheel assembly provided by the present invention has the following features:

[0013] Beneficial effects:

[0014] (1) Structural optimization: The reduction gearbox is installed on one side of the connecting plate with an offset installation, so that the components installed on the reduction gearbox are all located on one side of the reduction gearbox body. The travel motor is arranged horizontally on the top of the reduction gearbox, and the reducer is arranged horizontally below the travel motor. This design reduces the installation height of the steering wheel while meeting the technical requirements, and the overall structure is compact. Unlike the steering wheels that are commonly driven by synchronous belts on the market, this steering wheel adopts a two-stage reduction gear and a one-stage planetary reduction arrangement. This design can minimize the turning radius. When this steering wheel turns, the steering motor does not move. After the steering wheel assembly is installed on the vehicle, only the reduction gearbox and the wheel rotate. The maximum size of the turning radius is the radius of the turning gear. It can meet the requirements of low installation height and small turning radius in special industries.

[0015] (2) The steering wheel has been equipped with a protective cover, and the brake has been optimized and modified. A protective cover and a sealing ring have been added between the mounting plate and the connecting plate, so that the steering mechanism of the steering wheel is fully sealed without increasing the mounting height and turning radius of the steering wheel. The optimization of the brake is to modify the traditional brake and install the O-ring so that it is installed in the cavity outside the box cover to form a closed space to protect the inside of the brake. When installing the parts, all the contact surfaces are coated with sealant to improve the sealing performance. This steering wheel is more suitable for working conditions with harsh working environments such as the construction industry.

[0016] (3) Unlike conventional steering wheel motors that rotate with the steering wheel, the steering motor of this steering wheel is stationary during steering, significantly shortening the steering wheel's turning radius. The steering wheel housing and cover are both made of aluminum alloy, maximizing the lightweight of the steering wheel and improving the vehicle's energy efficiency.

[0017] (4) The tire is installed on the planetary reducer housing with a cantilever design. When replacing the tire, the box cover can be removed to quickly replace the tire, which is fast and efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a partially cutaway schematic diagram of the present invention.

[0019] Figure 2 It is a schematic diagram of the three-dimensional structure of the utility model.

[0020] In the figure: 1. Mounting plate, 2. Rotating gear, 3. Protective cover, 4. Sealing ring, 5. Connecting plate, 6. Brake, 7. First stage reduction, 8. Second stage reduction, 9. Planetary reducer, 10. Steering pinion, 11. Travel motor, 12. Reducer, 13. Steering motor, 14. Wheel, 15. Nylon sheath. DETAILED DESCRIPTION

[0021] The present invention will be further described below with reference to the accompanying drawings and implementation examples.

[0022] A steering wheel assembly for special industries includes a mounting plate: the mounting plate 1 is fixed to the vehicle frame, the lower side bearing of the mounting plate 1 is connected to the rotating gear 2, the outer ring of the rotating gear 2 is installed with a connecting plate 5, the lower side of the connecting plate 5 is installed with a reduction gearbox, and the reduction gearbox is connected to the wheel 14; a steering motor 13 is provided on one side of the square end of the mounting plate 1, a reducer 12 is installed on the fixing seat of the steering motor 13, the housing of the reducer 12 is fixedly connected to the mounting plate 1, and the output shaft of the steering motor 13 is fixedly connected to the input shaft of the reducer 12. The output shaft of the reducer 12 is fixedly connected to the steering pinion 10, and the steering pinion 10 engages with the rotary gear 2; the steering motor 13 is installed on the reducer 12, and when the steering wheel is turned, the steering motor 13 rotates to drive the steering pinion 10 to rotate, so that the outer ring of the rotary gear 2 rotates, thereby driving the connecting plate 5 to rotate, and the connecting plate 5 drives the reduction gear box wheel to rotate; because the mounting plate 1 is rigidly fixed on the frame body, the steering motor does not move when the steering wheel is turned, and only the reduction gear box and wheel 14 on the connecting plate rotate, thereby reducing the turning radius.

[0023] A protective cover 3 is installed between the connecting plate 5 and the mounting plate 1 , and the protective cover 3 is installed on the mounting plate 1 and connected with screws.

[0024] The protective cover 3 is divided into two halves for easy installation. A separately designed L-shaped sealing ring 4 is installed at the joint of the two halves of the protective cover 3 to fit tightly with the protective cover 3. A gap is provided at the relative position of the protective cover 3 and the fixing seat of the steering motor 13. After the protective cover 3 is installed, it fits with the gap of the fixing seat of the steering motor 13 to form a seal. The connecting plate 5 is designed to be circular, and a skeleton oil seal is added between the connecting plate 5 and the protective cover 3 to play a sealing role.

[0025] A nylon sheath 15 is provided in the middle of the rotating gear 2, and the nylon sheath 15 is installed on the connecting plate 5. An O-ring is installed on the nylon sheath 15 to contact with the inner ring of the rotating gear 2 to play a sealing role; this design makes the rectified rotating mechanism form a relatively sealed closed space, ensuring that foreign matter such as dust and mud cannot enter.

[0026] The reduction gearbox adopts a flat design including a box cover and a box body; the reduction gearbox is fixedly connected to the travel motor 11, and the reduction gearbox is vertically mounted on the connecting plate 5 and offset to one side of the edge of the connecting plate 5. A total of three stages of reduction are adopted, the first stage reduction gear 7, the second stage reduction gear 8 and the third stage adopts a planetary reducer 9; the first stage reduction gear 7 and the second stage reduction gear 8 adopt helical gears arranged in parallel in the reduction gearbox, the planetary reducer 9 is installed on the reduction gearbox and arranged parallel to the travel motor 11, and the wheel 14 is fixedly connected to the output shaft of the planetary reducer 9. The wheel 14 is installed on a separately designed planetary reducer 9 to form a cantilever structure. The design of the reducer can not only increase the reduction ratio of the steering wheel, but also make the structure of the steering wheel compact and reduce the installation height; the travel motor 11 is installed on the reducer above the planetary reducer 9. The travel motor 11, planetary reducer 9, and wheel 14 are all located on one side of the reducer, so that the overall structure does not exceed the diameter range of the rotating gear and the rotation radius is further compressed; the travel motor 11 is connected to the driving teeth in the first reduction gear set 7, and the input shaft of the planetary reducer 9 is connected to the driven gear in the second reduction gear 8. When the travel motor 11 rotates, it drives the first and second reduction gear sets, thereby driving the third-stage reduction planetary reducer 9 to rotate, and the planetary reducer 9 drives the wheel 14 installed thereon to rotate.

[0027] The reduction gear box is fixedly connected to the brake 6, and the brake 6 is installed on the outer side of the reduction gear box cover opposite the travel motor 11, and is connected to the output shaft of the travel motor 11 with a flat key. The brake 6 plays a braking role, abandoning the sealing method of the exposed protective cover used in the traditional market. The protective cover of the traditional brake has weak protection ability, and impurities, mud, etc. can easily enter the inside of the brake, which is not suitable for the harsh environment of special industries. Therefore, the brake 6 is modified so that the exposed part of the brake 6 does not need to be protected by the protective cover; the outer side of the reduction gear box cover is processed into a cavity, so that the exposed part of the brake 6 is installed in the cavity on the outside of the reduction gear box cover, and the stator of the brake 6 is installed with an O-ring after modification to form a closed space in the cavity between the brake stator and the cover, so that impurities, mud, etc. cannot enter the inside of the brake 6.

[0028] A parallel key connection is a common mechanical connection method. It uses a parallel key to connect a shaft to a component mounted on the shaft (such as a hub or gear), enabling the component to move in unison with the shaft. Parallel key connections are widely used in the automotive industry, machine tools, speed reducers, motors, and other mechanical industries to transmit torque and maintain the motion of the component mounted on the shaft aligned with the shaft.

[0029] During assembly, sealant must be applied to the surfaces of all parts that come into contact with each other to further seal the steering wheel.

[0030] Both the travel motor 11 and the steering motor 13 adopt IP64 protection grade and have excellent waterproof and dustproof performance and do not require special protection.

[0031] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A steering wheel assembly for special industries, characterized by: Includes mounting plate (1): The lower side bearing of the mounting plate (1) is connected to the rotary gear (2), the outer ring of the rotary gear (2) is installed with a connecting plate (5), the lower side of the connecting plate (5) is installed with a reduction box, and the reduction box is connected to the wheel (14); A steering motor (13) is provided on one side of one square end of the mounting plate (1), a reducer (12) is installed on a fixing seat of the steering motor (13), a housing of the reducer (12) is fixedly connected to the mounting plate (1), an output shaft of the steering motor (13) is fixedly connected to an input shaft of the reducer (12), an output shaft of the reducer (12) is fixedly connected to a steering pinion (10), and the steering pinion (10) engages with the rotary gear (2).

2. The steering wheel assembly for special industries according to claim 1 is characterized by: A protective cover (3) is installed between the connecting plate (5) and the mounting plate (1), and the protective cover (3) is installed on the mounting plate (1) and connected with screws.

3. The steering wheel assembly for special industries according to claim 2 is characterized by: The protective cover (3) is divided into two halves for easy installation, and a separately designed L-shaped sealing ring (4) is installed at the joint of the two halves of the protective cover (3) to fit tightly with the protective cover (3).

4. The steering wheel assembly for special industries according to claim 3 is characterized by: A nylon sheath (15) is provided in the middle of the rotary gear (2), and the nylon sheath (15) is mounted on the connecting plate (5). An O-type sealing ring is mounted on the nylon sheath (15) and contacts the inner ring of the rotary gear (2) to perform a sealing function.

5. The steering wheel assembly for special industries according to claim 1 is characterized by: The reduction box is fixedly connected to the travel motor (11), and the reduction box is vertically mounted on the connecting plate (5) and offset to one side of the edge of the connecting plate (5). A total of three stages of reduction are adopted, namely, a first stage reduction (7), a second stage reduction (8), and a third stage planetary reduction gear (9); the first stage reduction gear (7) and the second stage reduction gear (8) are arranged in parallel in the reduction box using helical gears, the planetary reduction gear (9) is mounted on the reduction box and arranged in parallel with the travel motor (11), and the wheel (14) is fixedly connected to the output shaft of the planetary reduction gear (9).

6. The steering wheel assembly for special industries according to claim 5 is characterized by: The reduction box is fixedly connected to a brake (6), and the brake (6) is installed on the outer side of a box cover of the reduction box opposite to the travel motor (11), and is connected to the output shaft of the travel motor (11) using a flat key.

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