Electric control rear wheel steering axle

Abstract

The utility model relates to an electric control rear wheel steering axle, which belongs to the technical field of vehicle parts and comprises a mounting frame, the mounting frame consists of a first protective plate, a second protective plate, a mounting plate and a connecting plate, steering axle frames are arranged on two sides of the mounting frame, and driving mechanisms are arranged between the steering axle frames and the mounting frame; and the driving mechanism comprises a servo electric cylinder, connecting rods are hinged to output shafts on the two sides of the servo electric cylinder, mounting sleeves are connected to the ends, away from the servo electric cylinder, of the connecting rods, and mounting shafts are connected between the mounting sleeves and the mounting frame. According to the electric control rear wheel steering axle, under the condition that it is guaranteed that the overall structure of the axle body is not greatly changed, the servo electric cylinder is used for replacing an original steering oil cylinder, the electric control steering wheel generates electric signals to drive the servo electric cylinder, and therefore the purpose of steering is achieved, the servo electric cylinder is high in control precision and fast in response, electric signal control is achieved, and the electric control rear wheel steering axle is particularly suitable for automatic steering during unmanned driving.

Description

Technical Field

[0001] This utility model relates to the field of vehicle parts technology, specifically to an electrically controlled rear wheel steering axle. Background Technology

[0002] With economic development and rising labor costs, urban sanitation cleaning has largely become mechanized, and there is a growing trend towards mechanized operations. During the cleaning process, sweepers are typically used to clean the ground. The steering axle is a key component of the sweeper's chassis system, mainly used to enable the vehicle to steer, while also bearing some load and transmitting force.

[0003] Currently, most rear-wheel steering sweepers in the industry use hydraulic steering in their rear axles. This involves a hydraulic steering gear that distributes hydraulic oil, which in turn drives a hydraulic cylinder. The cylinder then turns the steering wheels by a certain angle, thus steering the vehicle. However, hydraulic steering suffers from low control precision, significant time delays, and is greatly affected by temperature fluctuations and leakage due to component wear. Furthermore, it presents significant challenges in unmanned operation. Therefore, an electrically controlled rear-wheel steering axle is proposed to address these issues. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides an electrically controlled rear wheel steering axle, which has advantages such as precise steering. It solves the problem that the rear wheel steering axles of sweepers currently used in the industry generally use hydraulic steering, but hydraulic steering has problems such as low control accuracy and large delay due to hydraulic transmission.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an electric control rear wheel steering axle, comprising a mounting frame, wherein the mounting frame is composed of a first protective plate, a second protective plate, a mounting plate and a connecting plate, and steering bridges are provided on both sides of the mounting frame, and a drive mechanism is provided between the steering bridges and the mounting frame;

[0006] The drive mechanism includes a servo electric cylinder, with connecting rods hinged to both output shafts of the servo electric cylinder. A mounting sleeve is connected to the end of the connecting rod away from the servo electric cylinder. A mounting shaft is connected between the mounting sleeve and the mounting frame. The outer side of the mounting sleeve is fixedly connected to the steering bridge.

[0007] Furthermore, the first protective plate and the second protective plate correspond to each other, the mounting plate is fixedly connected to one side between the first protective plate and the second protective plate, and the connecting plate is fixedly connected to the other side between the first protective plate and the second protective plate.

[0008] Furthermore, the servo electric cylinder is located between the first protective plate and the second protective plate, and a fixing component is provided between the servo electric cylinder and the mounting plate.

[0009] Furthermore, the fixing component includes a positioning frame and a positioning shaft. There are two positioning frames, which are respectively installed on both sides of the servo cylinder. The outer wall of the mounting plate is provided with fixing screws connected to the positioning frames. The positioning shaft is fixedly connected to the outer wall of the servo cylinder. The inner side of the mounting plate is provided with a positioning hole that matches the positioning shaft, and the positioning shaft passes through the inner side of the positioning hole.

[0010] Furthermore, one end of the mounting shaft is fixedly connected to the first protective plate, and the other end of the mounting shaft is fixedly connected to the second protective plate.

[0011] Furthermore, the mounting sleeve is rotatably mounted on the outer wall of the mounting shaft, and a connecting member is provided between the mounting sleeve and the connecting rod.

[0012] Furthermore, the connector is fixedly connected to the outside of the mounting sleeve, and the connector is hinged to the connecting rod.

[0013] Furthermore, a hub connecting bracket is fixedly installed on the side of the steering bridge away from the mounting frame.

[0014] Furthermore, a fixing block is fixedly installed on the outer wall of the mounting plate, and a first connecting shaft is fixedly connected to the outer side of the fixing block. The first mounting block is rotatably installed on the outer wall of the first connecting shaft.

[0015] Furthermore, a second connecting shaft is fixedly installed on the outer wall of the connecting plate, and a second mounting block is rotatably installed on the outer wall of the second connecting shaft.

[0016] Compared with the prior art, this utility model provides an electrically controlled rear wheel steering axle, which has the following advantages:

[0017] This electrically controlled rear-wheel steering axle replaces the original hydraulic steering cylinder with a servo electric cylinder without significantly altering the overall axle structure. The servo electric cylinder is driven by an electrical signal generated by the electrically controlled steering wheel, thus achieving steering. The servo electric cylinder offers high control precision and fast response, and its electrical signal control makes it particularly suitable for automatic steering in unmanned driving scenarios. This solves the problem that hydraulic steering, which is commonly used in the rear axles of current rear-wheel steering sweepers, suffers from lower control precision and longer delays due to its hydraulic transmission. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a top view of the structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the structure of this utility model after the second protective plate has been removed;

[0021] Figure 4 This is a top view of the structure of this utility model after the second protective plate has been removed;

[0022] Figure 5 This is a schematic diagram of the mounting plate of this utility model;

[0023] Figure 6 This is a block diagram of the control system of this utility model.

[0024] In the diagram: 1. First protective plate; 2. Second protective plate; 3. Mounting plate; 4. Connecting plate; 5. Mounting shaft; 6. Steering bridge; 7. Servo electric cylinder; 8. Connecting rod; 9. Mounting sleeve; 10. Connecting piece; 11. Fixing block; 12. First connecting shaft; 13. First mounting block; 14. Second connecting shaft; 15. Second mounting block; 16. Positioning bracket; 17. Fixing screw; 18. Positioning shaft; 19. Wheel hub connecting bracket. Detailed Implementation

[0025] 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.

[0026] Please see Figures 1 to 6 An electrically controlled rear wheel steering axle in this embodiment includes a mounting frame, which is composed of a first protective plate 1, a second protective plate 2, a mounting plate 3, and a connecting plate 4. Steering bridges 6 are provided on both sides of the mounting frame. The first protective plate 1 and the second protective plate 2 correspond to each other. The mounting plate 3 is fixedly connected to one side between the first protective plate 1 and the second protective plate 2, and the connecting plate 4 is fixedly connected to the other side between the first protective plate 1 and the second protective plate 2.

[0027] Among them, the hub connecting bracket 19 is fixedly installed on the side of the steering bridge 6 away from the mounting frame.

[0028] In this embodiment, a drive mechanism is provided between the steering bridge 6 and the mounting frame. The drive mechanism includes a servo cylinder 7, which is located between the first protective plate 1 and the second protective plate 2. Connecting rods 8 are hinged to the output shafts on both sides of the servo cylinder 7. The end of the connecting rod 8 away from the servo cylinder 7 is connected to a mounting sleeve 9. A mounting shaft 5 is connected between the mounting sleeve 9 and the mounting frame. One end of the mounting shaft 5 is fixedly connected to the first protective plate 1, and the other end of the mounting shaft 5 is fixedly connected to the second protective plate 2. The outer side of the mounting sleeve 9 is fixedly connected to the steering bridge 6. The mounting sleeve 9 is rotatably mounted on the outer wall of the mounting shaft 5. A connector 10 is provided between the mounting sleeve 9 and the connecting rod 8. The connector 10 is fixedly connected to the outer side of the mounting sleeve 9 and is hinged to the connecting rod 8.

[0029] In this embodiment, a fixing component is provided between the servo electric cylinder 7 and the mounting plate 3. The fixing component includes a positioning frame 16 and a positioning shaft 18. There are two positioning frames 16, which are respectively installed on both sides of the servo electric cylinder 7. The outer wall of the mounting plate 3 is provided with fixing screws 17 connected to the positioning frames 16. The positioning shaft 18 is fixedly connected to the outer wall of the servo electric cylinder 7. The inner side of the mounting plate 3 is provided with a positioning hole that matches the positioning shaft 18. The positioning shaft 18 passes through the inner side of the positioning hole. The servo electric cylinder 7 is fixed by the cooperation of the positioning frame 16 and the positioning shaft 18.

[0030] It should be noted that a fixing block 11 is fixedly installed on the outer wall of the mounting plate 3, a first connecting shaft 12 is fixedly connected to the outer side of the fixing block 11, a first mounting block 13 is rotatably installed on the outer wall of the first connecting shaft 12, a second connecting shaft 14 is fixedly installed on the outer wall of the connecting plate 4, and a second mounting block 15 is rotatably installed on the outer wall of the second connecting shaft 14. The first mounting block 13 and the second mounting block 15 are used to install the plate inside the vehicle.

[0031] An electric control rear wheel steering axle control system in this embodiment includes a power supply, an electric steering wheel, and a servo cylinder controller. The power supply provides power to the electric steering wheel and the servo cylinder controller. The electric steering wheel is connected to the steering wheel on the vehicle. When the electric steering wheel rotates, it sends a signal to the servo cylinder controller. The servo cylinder controller controls the servo cylinder 7 to respond quickly, thereby driving the steering wheel hub to rotate.

[0032] The working principle of the above embodiments is as follows:

[0033] In use, this utility model replaces the original steering cylinder with a servo electric cylinder 7 without significantly altering the overall structure of the bridge. The servo electric cylinder 7 is driven by an electrical signal generated by the electronically controlled steering wheel, thereby achieving the purpose of steering. The servo electric cylinder 7 has high control precision, fast response, and is controlled by electrical signals, making it particularly suitable for automatic steering in unmanned driving situations.

[0034] The installation, connection, or setting methods disclosed in this embodiment are all common mechanical methods, and can be implemented as long as they can achieve their beneficial effects. It should be noted that the orientation or positional relationship indicated herein is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this application and simplifying the description, and is not intended to 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.

[0035] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An electrically controlled rear wheel steering axle, comprising a mounting frame, characterized in that: The mounting frame is composed of a first protective plate (1), a second protective plate (2), a mounting plate (3) and a connecting plate (4). A steering bridge (6) is provided on both sides of the mounting frame, and a driving mechanism is provided between the steering bridge (6) and the mounting frame. The drive mechanism includes a servo electric cylinder (7), and connecting rods (8) are hinged on both output shafts of the servo electric cylinder (7). The end of the connecting rod (8) away from the servo electric cylinder (7) is connected to a mounting sleeve (9). A mounting shaft (5) is connected between the mounting sleeve (9) and the mounting frame. The outer side of the mounting sleeve (9) is fixedly connected to the steering bridge (6).

2. The electrically controlled rear wheel steering axle according to claim 1, characterized in that: The first protective plate (1) and the second protective plate (2) correspond to each other. The mounting plate (3) is fixedly connected to one side between the first protective plate (1) and the second protective plate (2). The connecting plate (4) is fixedly connected to the other side between the first protective plate (1) and the second protective plate (2).

3. The electrically controlled rear wheel steering axle according to claim 1, characterized in that: The servo electric cylinder (7) is located between the first protective plate (1) and the second protective plate (2), and a fixing component is provided between the servo electric cylinder (7) and the mounting plate (3).

4. The electrically controlled rear wheel steering axle according to claim 3, characterized in that: The fixing assembly includes a positioning frame (16) and a positioning shaft (18). There are two positioning frames (16), which are respectively installed on both sides of the servo cylinder (7). The outer wall of the mounting plate (3) is provided with fixing screws (17) connected to the positioning frames (16). The positioning shaft (18) is fixedly connected to the outer wall of the servo cylinder (7). The inner side of the mounting plate (3) is provided with a positioning hole that matches the positioning shaft (18). The positioning shaft (18) passes through the inner side of the positioning hole.

5. The electrically controlled rear wheel steering axle according to claim 1, characterized in that: One end of the mounting shaft (5) is fixedly connected to the first protective plate (1), and the other end of the mounting shaft (5) is fixedly connected to the second protective plate (2).

6. The electrically controlled rear wheel steering axle according to claim 1, characterized in that: The mounting sleeve (9) is rotatably mounted on the outer wall of the mounting shaft (5), and a connector (10) is provided between the mounting sleeve (9) and the connecting rod (8).

7. An electrically controlled rear wheel steering axle according to claim 6, characterized in that: The connector (10) is fixedly connected to the outside of the mounting sleeve (9), and the connector (10) is hinged to the connecting rod (8).

8. The electrically controlled rear wheel steering axle according to claim 1, characterized in that: The steering bridge (6) has a hub connecting bracket (19) fixedly installed on the side away from the mounting frame.

9. An electrically controlled rear wheel steering axle according to claim 1, characterized in that: A fixing block (11) is fixedly installed on the outer wall of the mounting plate (3), and a first connecting shaft (12) is fixedly connected to the outer side of the fixing block (11). A first mounting block (13) is rotatably installed on the outer wall of the first connecting shaft (12).

10. An electrically controlled rear wheel steering axle according to claim 1, characterized in that: A second connecting shaft (14) is fixedly installed on the outer wall of the connecting plate (4), and a second mounting block (15) is rotatably installed on the outer wall of the second connecting shaft (14).

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