Loader and electric steering system thereof

Abstract

The utility model provides a loader and an electric steering system thereof, and relates to the technical field of loaders. The electric cylinder hinged steering system comprises a control assembly, a frame assembly and a steering assembly. The control assembly comprises a whole vehicle controller and a steering wheel which are electrically connected. The frame assembly comprises a loader rear frame and a loader front frame which are connected in a hinged mode. The steering assembly comprises a displacement signal processor, a first servo motor controller, a first hinged steering electric cylinder and a first displacement sensor which are connected in sequence, and a second servo motor controller, a second hinged steering electric cylinder and a second displacement sensor which are connected in sequence. The first displacement sensor is connected to the first servo motor controller and the signal input end of the displacement signal processor. The second displacement sensor is connected with the signal input end of the second servo motor controller and the signal input end of the displacement signal processor. The displacement signal processor is electrically connected to the signal input end of the vehicle control unit.

Description

Technical Field

[0001] The utility model relates to the technical field of loaders, in particular to a loader and an electric steering system thereof. Background Art

[0002] Construction machinery has become a major obstacle to green development due to its high energy consumption, high emissions and large usage. Therefore, electrification transformation is not only an inevitable choice for the sustainable development of the construction machinery industry, but also the key to promoting technological progress in the industry.

[0003] Traditional fuel loaders not only face the problems of high fuel consumption and high maintenance costs, but also come with safety hazards, noise and vibration and other environmental problems caused by the engine and mechanical parts. These problems not only increase operating costs, but also burden the environment. Therefore, developing pure electric loaders and promoting the electrification of loaders are crucial to achieving environmental protection, high efficiency and low energy consumption of construction machinery.

[0004] At present, loaders generally use hydraulic cylinders to control steering movements, but this method has many shortcomings, such as: energy waste caused by overflow, environmental pollution and resource waste caused by hydraulic oil leakage, complicated maintenance procedures and high maintenance costs, loud working noise, inaccurate and slow steering control, and complexity of installation and debugging.

[0005] The steering movement of a loader is an indispensable function in its operation. Therefore, the development of an electric steering system without a hydraulic system can not only eliminate the above problems, but also improve the controllability and response speed of the loader, which is a key step in the electrification process of the loader. This innovation will bring a greener, smarter and more efficient future to the construction machinery industry. In view of this, the applicant has specially filed this application after studying the existing technology. Utility Model Content

[0006] The utility model provides a loader and an electric steering system thereof, aiming to improve at least one of the above technical problems.

[0007] In order to solve the above technical problems, the utility model provides an electric steering system for a loader, which comprises a control component, a frame component and a steering component.

[0008] The control component includes a vehicle controller and a steering wheel, wherein the steering wheel is electrically connected to a signal input terminal of the vehicle controller.

[0009] The frame assembly comprises a loader rear frame and a loader front frame, wherein the loader front frame is hinged to the loader rear frame.

[0010] The steering assembly includes a displacement signal processor, a first servo motor controller, a first articulated steering electric cylinder, a first displacement sensor, a second servo motor controller, a second articulated steering electric cylinder and a second displacement sensor. The signal output end of the vehicle controller is electrically connected to the control ends of the first servo motor controller and the second servo motor controller.

[0011] The first servo motor controller is electrically connected to the control end of the first articulated steering electric cylinder. The two ends of the first articulated steering electric cylinder are respectively articulated to the rear frame of the loader and the front frame of the loader. The first displacement sensor is connected to the first articulated steering electric cylinder to detect the displacement signal of the first articulated steering electric cylinder. The first displacement sensor is connected to the signal input end of the first servo motor controller and the displacement signal processor.

[0012] The second servo motor controller is electrically connected to the control end of the second articulated steering electric cylinder. The two ends of the second articulated steering electric cylinder are respectively articulated to the rear frame of the loader and the front frame of the loader. The second displacement sensor is connected to the second articulated steering electric cylinder to detect the displacement signal of the first articulated steering electric cylinder. The second displacement sensor is connected to the signal input end of the second servo motor controller and the displacement signal processor.

[0013] The displacement signal processor is electrically connected to the signal input terminal of the vehicle controller.

[0014] In an optional embodiment, the hinge point of the loader rear frame and the loader front frame is located between the first articulated steering electric cylinder and the second articulated steering electric cylinder.

[0015] In an optional embodiment, the hinge point of the loader rear frame and the loader front frame is located at the center line of the loader rear frame.

[0016] In an optional embodiment, when the steering angle of the loader is 0, the first articulated steering electric cylinder and the second articulated steering electric cylinder are symmetrically arranged relative to a center line of the vehicle body.

[0017] In an optional embodiment, the fixed end of the first articulated steering electric cylinder is hinged to the rear frame of the loader through a hinge, and the output shaft of the first articulated steering electric cylinder is connected to the front frame of the loader through a universal joint.

[0018] The fixed end of the second articulated steering electric cylinder is hinged to the rear frame of the loader through a hinge. The output shaft of the second articulated steering electric cylinder is connected to the front frame of the loader through a universal joint.

[0019] In an optional embodiment, the frame assembly further includes a front wheel coupled to the front frame of the loader.

[0020] In an optional embodiment, the frame assembly further includes a rear wheel coupled to the rear frame of the loader.

[0021] In an optional embodiment, the frame assembly further includes a boom coupled to the front frame of the loader.

[0022] In an optional embodiment, the frame assembly further includes a bucket coupled to the boom.

[0023] The present application further provides a loader, which comprises an electric steering system for a loader as described in any paragraph of the first aspect.

[0024] By adopting the above technical solution, the utility model can achieve the following technical effects:

[0025] The electric steering system of a loader in an embodiment of the utility model has significantly improved response speed and accuracy compared to a traditional loader hydraulic cylinder steering system. The servo motor can accurately control the speed and stroke of the electric cylinder, thereby accurately and quickly controlling the steering of the loader. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 It is a front view of the electric steering system of a loader.

[0028] Figure 2 It is a bottom view of the electric steering system of a loader.

[0029] Figure 3 The present invention is a schematic diagram of the electrical connection of the electric steering system of a loader.

[0030] Markings in the figure: 1-first servo motor controller, 2-second servo motor controller, 3-first articulated steering electric cylinder, 4-second articulated steering electric cylinder, 5-displacement signal processor, 6-loader front frame, 7-loader rear frame. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical scheme and advantages of the implementation mode of the utility model clearer, the technical scheme in the implementation mode of the utility model will be clearly and completely described below in conjunction with the drawings in the implementation mode of the utility model. Obviously, the described implementation mode is a part of the implementation mode of the utility model, not all of the implementation modes. Based on the implementation mode in the utility model, all other implementation modes obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model. Therefore, the following detailed description of the implementation mode of the utility model provided in the drawings is not intended to limit the scope of the utility model for which protection is sought, but merely represents the selected implementation mode of the utility model. Based on the implementation mode in the utility model, all other implementation modes obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0032] Depend on Figures 1 to 3 As shown, the embodiment of the utility model provides an electric steering system for a loader, which comprises a control component, a frame component and a steering component.

[0033] The control component includes a vehicle controller and a steering wheel. The steering wheel is electrically connected to the signal input terminal of the vehicle controller. Specifically, the steering wheel assembly includes components such as a steering wheel, a steering wheel angle sensor, a torque sensor, and a steering wheel return torque motor. These components work together to collect the steering signal and then send it to the vehicle controller.

[0034] The frame assembly comprises a loader rear frame 7 and a loader front frame 6. The loader front frame 6 is hinged to the loader rear frame 7.

[0035] Specifically, the loader adopts an articulated structure of the front frame and the rear frame, which allows the front frame and the rear frame to rotate relative to each other, which makes the loader more flexible and easy to operate in narrow or crowded spaces. When working on uneven terrain, the articulated structure can better adapt to the ups and downs of the ground and reduce the impact and stress on the overall structure of the vehicle. Improve work efficiency: The articulated structure makes the loader more flexible during loading operations, and can quickly adjust the working posture, improving work efficiency.

[0036] The steering assembly includes a displacement signal processor 5, a first servo motor controller 1, a first articulated steering electric cylinder 3, a first displacement sensor, a second servo motor controller 2, a second articulated steering electric cylinder 4 and a second displacement sensor. The displacement signal processor 5 is electrically connected to the signal input end of the vehicle controller. The signal output end of the vehicle controller is electrically connected to the control ends of the first servo motor controller 1 and the second servo motor controller 2.

[0037] The first servo motor controller 1 is electrically connected to the control end of the first articulated steering electric cylinder 3. The two ends of the first articulated steering electric cylinder 3 are respectively articulated to the loader rear frame 7 and the loader front frame 6. The first displacement sensor is connected to the first articulated steering electric cylinder 3 to detect the displacement signal of the first articulated steering electric cylinder 3. The first displacement sensor is connected to the first servo motor controller 1 and the signal input end of the displacement signal processor 5.

[0038] The second servo motor controller 2 is electrically connected to the control end of the second articulated steering electric cylinder 4. The two ends of the second articulated steering electric cylinder 4 are respectively articulated to the loader rear frame 7 and the loader front frame 6. The second displacement sensor is connected to the second articulated steering electric cylinder 4 to detect the displacement signal of the first articulated steering electric cylinder 3. The second displacement sensor is connected to the second servo motor controller 2 and the signal input end of the displacement signal processor 5.

[0039] Specifically, the traditional loader hydraulic cylinder steering system requires the support of the hydraulic system, including hydraulic pumps, oil tanks, pipelines, etc. The equipment is complex and difficult to install. At the same time, its maintenance cost is high due to the complex structure. The electric steering system of a loader in an embodiment of the utility model uses an electric cylinder for driving, which has a simpler structure and is easy to install and debug. It only needs to connect the power supply and the controller. At the same time, the cost and maintenance cost of the electric cylinder are low, and the difficulty of disassembly and maintenance is low. Compared with the traditional loader hydraulic cylinder steering system, the response speed and accuracy are significantly improved. The servo motor can accurately control the speed and stroke of the electric cylinder, thereby accurately and quickly controlling the steering of the loader. It is particularly suitable for loaders with electric drive configurations, especially loaders with non-hydraulic all-electric drive configurations.

[0040] The hydraulic cylinder of the traditional loader steering system may leak hydraulic oil after long-term use, which not only wastes energy but also pollutes the environment. The electric steering system of a loader in the embodiment of the utility model is driven by an electric cylinder, which solves the problem of waste and pollution from the source and is more environmentally friendly. It also further improves the electrification of the loader, greatly improves the flexibility and stability of the steering, and significantly reduces the energy consumption of the traditional loader steering hydraulic system, greatly improving the driving flexibility and stability of the loader.

[0041] like Figure 2As shown, based on the above embodiment, in an optional embodiment of the utility model, the hinge point of the loader rear frame 7 and the loader front frame 6 is located at the center line of the loader rear frame 7. The hinge point of the loader rear frame 7 and the loader front frame 6 is located between the first articulated steering electric cylinder 3 and the second articulated steering electric cylinder 4. Preferably, when the steering angle of the loader is 0, the first articulated steering electric cylinder 3 and the second articulated steering electric cylinder 4 are symmetrically arranged relative to the center line of the vehicle body.

[0042] like Figure 1 and Figure 2 As shown, based on the above embodiment, in an optional embodiment of the utility model, the fixed end of the first articulated steering electric cylinder 3 is hinged to the loader rear frame 7 through a hinge. The output shaft of the first articulated steering electric cylinder 3 is connected to the loader front frame 6 through a universal joint. The fixed end of the second articulated steering electric cylinder 4 is hinged to the loader rear frame 7 through a hinge. The output shaft of the second articulated steering electric cylinder 4 is connected to the loader front frame 6 through a universal joint.

[0043] Compared with the prior art, the embodiment of the utility model has the advantages of simple structure, convenient installation and debugging, low maintenance cost, fast response speed, high precision and no pollution. The use of electric cylinder reduces the dependence on hydraulic system, reduces energy consumption, and improves the driving flexibility and stability of the loader. It solves the problem of large throttling and overflow loss in the existing centralized hydraulic drive loader steering system.

[0044] Based on the above embodiment, in an optional embodiment of the utility model, the frame assembly further includes a front wheel coupled to the loader front frame 6. The frame assembly further includes a rear wheel coupled to the loader rear frame 7. The frame assembly further includes a boom coupled to the loader front frame 6. The frame assembly further includes a bucket coupled to the boom.

[0045] Example 2, please refer to Figure 1 and Figure 2 An embodiment of the utility model provides a loader, which includes an electric steering system for a loader as described in any paragraph of the first embodiment.

[0046] The above description is only the preferred implementation of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An electric steering system for a loader, characterized in that: Contains control components, frame components and steering components; The control component includes a vehicle controller and a steering wheel; wherein the steering wheel is electrically connected to a signal input terminal of the vehicle controller; The frame assembly comprises a loader rear frame (7) and a loader front frame (6); wherein the loader front frame (6) is hinged to the loader rear frame (7); The steering assembly comprises a displacement signal processor (5), a first servo motor controller (1), a first articulated steering electric cylinder (3), a first displacement sensor, a second servo motor controller (2), a second articulated steering electric cylinder (4) and a second displacement sensor; wherein the signal output end of the vehicle controller is electrically connected to the control ends of the first servo motor controller (1) and the second servo motor controller (2); The first servo motor controller (1) is electrically connected to a control end of the first articulated steering electric cylinder (3); two ends of the first articulated steering electric cylinder (3) are respectively articulated to the rear frame (7) of the loader and the front frame (6) of the loader; the first displacement sensor is connected to the first articulated steering electric cylinder (3) to detect a displacement signal of the first articulated steering electric cylinder (3); the first displacement sensor is connected to the first servo motor controller (1) and a signal input end of the displacement signal processor (5); The second servo motor controller (2) is electrically connected to the control end of the second articulated steering electric cylinder (4); the two ends of the second articulated steering electric cylinder (4) are respectively articulated to the rear frame (7) of the loader and the front frame (6) of the loader; the second displacement sensor is connected to the second articulated steering electric cylinder (4) to detect the displacement signal of the first articulated steering electric cylinder (3); the second displacement sensor is connected to the signal input end of the second servo motor controller (2) and the displacement signal processor (5); The displacement signal processor (5) is electrically connected to the signal input terminal of the vehicle controller.

2. The electric steering system of a loader according to claim 1, characterized in that The hinge point of the loader rear frame (7) and the loader front frame (6) is located between the first articulated steering electric cylinder (3) and the second articulated steering electric cylinder (4).

3. The electric steering system of a loader according to claim 2 is characterized in that The hinge point of the loader rear frame (7) and the loader front frame (6) is located at the center line of the loader rear frame (7).

4. The electric steering system for a loader according to claim 2 is characterized in that When the steering angle of the loader is 0, the first articulated steering electric cylinder (3) and the second articulated steering electric cylinder (4) are symmetrically arranged relative to the center line of the vehicle body.

5. The electric steering system for a loader according to claim 1 is characterized in that The fixed end of the first articulated steering electric cylinder (3) is hinged to the rear frame (7) of the loader via a hinge; the output shaft of the first articulated steering electric cylinder (3) is connected to the front frame (6) of the loader via a universal joint; The fixed end of the second articulated steering electric cylinder (4) is hinged to the rear frame (7) of the loader via a hinge; and the output shaft of the second articulated steering electric cylinder (4) is connected to the front frame (6) of the loader via a universal joint.

6. The electric steering system for a loader according to any one of claims 1 to 5, characterized in that The frame assembly also includes a front wheel coupled to the front frame (6) of the loader.

7. An electric steering system for a loader according to any one of claims 1 to 5, characterized in that The frame assembly also includes a rear wheel coupled to the rear frame (7) of the loader.

8. An electric steering system for a loader according to any one of claims 1 to 5, characterized in that The frame assembly also includes a movable arm connected to the front frame (6) of the loader.

9. The electric steering system for a loader according to claim 8, characterized in that , the frame assembly also includes a bucket coupled to the boom.

10. A loader, characterized in that An electric steering system for a loader comprising the method described in any one of claims 1 to 9.

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