Hydraulic drive type forklift steering axle

Abstract

A hydraulic drive type forklift steering axle comprises a steering axle body, a two-way air cylinder, two flange plates, two hydraulic motors and a rim, the two-way air cylinder is fixedly connected to the middle of the steering axle body, the two flange plates are located at the two ends of the steering axle body, and the two hydraulic motors are fixed to the flange plates on the two sides. The hydraulic drive type forklift steering axle has the remarkable beneficial effects in the aspects of power performance, structure simplification, cost reduction, flexibility, stability, applicability and the like, and has wide market application prospects.

Description

Technical Field

[0001] The present invention belongs to the technical field of forklift axles, and particularly relates to a hydraulic-driven forklift steering axle. Background Art

[0002] The steering axle in a forklift is a core component of the forklift drive system and is crucial for the maneuverability and stability of the forklift. Most forklifts on the current market adopt a dual-drive mode, that is, front-wheel drive or rear-wheel drive. These forklifts achieve the drive function through the cooperation of the steering axle with the gearbox and differential. However, some obvious deficiencies have emerged in this traditional drive structure during actual applications.

[0003] First of all, from the perspective of power performance, when facing complex working conditions, such as heavy loads, high speeds, or poor road surface conditions, dual-drive forklifts often exhibit problems of insufficient power. This limits the flexibility and efficiency of forklifts in various application scenarios.

[0004] Secondly, in order to improve power performance, some forklifts attempt to adopt a four-wheel drive structure, that is, adding an additional drive axle on the basis of dual-drive. However, although this approach improves power to a certain extent, it also brings higher manufacturing costs. Four-wheel drive forklifts require a more complex gearbox and differential system to coordinate the rotational speed and torque distribution of each drive axle. The precision machining and assembly of these complex mechanical components require high-precision technology and equipment support, thus significantly increasing the overall manufacturing cost of the forklift.

[0005] In addition, these complex mechanical components are also prone to wear and failure during use and need to be maintained and replaced regularly. This not only increases the operating cost of the forklift but may also affect the reliability and service life of the forklift.

[0006] In view of the above problems, new drive technologies have begun to be explored to replace the traditional gearbox and differential structures. Among them, hydraulic drive technology has attracted much attention due to its high efficiency, flexibility, and reliability. By installing a hydraulic motor on the steering axle, the optimization and upgrade of the forklift drive system can be achieved. Hydraulic drive technology can not only provide sufficient power support but also simplify the structure of the drive system, reducing manufacturing costs and maintenance costs. Summary of the Invention

[0007] The purpose of the present invention is to provide a hydraulic-driven forklift steering axle to solve the problems raised in the above background art.

[0008] A hydraulic-driven forklift steering axle includes a steering axle, a two-way cylinder, a flange, a hydraulic motor, and a rim. The two-way cylinder is fixedly connected to the middle position of the steering axle. There are two flanges located at both ends of the steering axle. There are two hydraulic motors fixed on the flanges on both sides.

[0009] The flange is rotatably connected to the left and right sides of one end of the steering axle through the ears at both left and right ends. An end portion is provided at the lower end of the flange. The end portion is movably connected to one end of the arc-shaped connecting block. The telescopic end of the double-acting cylinder is movably connected to the other end of the arc-shaped connecting block.

[0010] By the telescopic movement of the telescopic end of the double-acting cylinder, the flange can be driven to rotate up and down through the arc-shaped connecting block.

[0011] The maximum rotation angle of the flange is 58.87°.

[0012] The output end of the hydraulic motor is fixedly connected to the wheel rim. The wheel rim can be fixedly connected to the wheel hub together, and a tire can be installed on the wheel hub.

[0013] When this hydraulic-driven forklift steering axle is installed and used, its hydraulic motor is connected to the gear pump through a pipeline. The gear pump is connected to the multi-way valve through a pipeline, and the multi-way valve is connected to the control lever.

[0014] This hydraulic-driven forklift steering axle is installed and used on the basis of a dual-drive forklift, converting the dual-drive into a four-wheel drive.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0016] By adopting hydraulic drive technology and installing two hydraulic motors on the steering axle, the transformation of the forklift from dual-drive to four-wheel drive is realized, significantly improving the power performance of the forklift. This enables the forklift to exhibit stronger driving ability and flexibility when facing heavy loads, high speeds, or harsh road conditions, thereby improving work efficiency.

[0017] The hydraulic drive system has a simpler structure compared to the traditional gearbox and differential. It does not require precise machining and assembly of complex mechanical components, thus reducing the manufacturing cost of the forklift. At the same time, the maintenance of the hydraulic system is relatively simple, reducing the operating cost of the forklift.

[0018] Through the cooperation of the double-acting cylinder and the arc-shaped connecting block, the present invention realizes the up and down rotation of the flange (and the hydraulic motor and wheel rim fixedly connected thereto), and the maximum rotation angle can reach 58.87°. This greatly enhances the steering flexibility of the forklift, can better distribute the contact force between the forklift tires and the ground, and improves the overall stability. This function is particularly important especially when operating on uneven ground.

[0019] This hydraulic-driven forklift steering axle of the present invention is installed and used on the basis of a dual-drive forklift. Therefore, it can conveniently upgrade and transform the existing forklift without replacing the entire drive system, reducing the upgrade cost and making the upgraded forklift have a wider range of applicability.

[0020] In summary, the hydraulic drive forklift steering axle of the present invention shows significant beneficial effects in terms of power performance, structural simplification, cost reduction, flexibility and stability, and applicability, and has broad market application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a three-dimensional schematic diagram of the present invention;

[0022] Figure 2 is a three-dimensional schematic diagram of the present invention;

[0023] In the figure: 1, steering axle; 2, two-way cylinder; 3, flange; 4, hydraulic motor; 5, rim; 6, ear; 7, end; 8, arc connecting block. DETAILED DESCRIPTION OF THE INVENTION

[0024] The following further describes the present invention in conjunction with the specific embodiments and the drawings.

[0025] A hydraulic drive forklift steering axle includes a steering axle 1, a two-way cylinder 2, a flange 3, a hydraulic motor 4, and a rim 5. The two-way cylinder 2 is fixedly connected to the middle position of the steering axle 1. There are two flanges 3, located at both ends of the steering axle 1. There are two hydraulic motors 4, fixed on the flanges 3 on both sides.

[0026] The flange 3 is rotatably connected to the left and right sides of one end of the steering axle 1 through the ears 6 at the left and right ends. The lower end of the flange 3 is provided with an end 7, and the end 7 is movably connected to one end of the arc connecting block 8. The telescopic end of the two-way cylinder 2 is movably connected to the other end of the arc connecting block 8.

[0027] The two-way cylinder 2 can drive the flange 3 to rotate up and down through the arc connecting block 8 by the telescopic movement of the telescopic end.

[0028] The maximum rotation angle of the flange 3 is 58.87°.

[0029] The output end of the hydraulic motor 4 is fixedly connected to the rim 5, and the rim 5 can be fixedly connected to the wheel hub, and a tire can be installed on the hub.

[0030] When the hydraulic drive forklift steering axle is installed and used, its hydraulic motor 4 is connected to the gear pump through a pipeline, the gear pump is connected to the multi-way valve through a pipeline, and the multi-way valve is connected to the joystick.

[0031] This hydraulic drive forklift steering axle is installed and used on the basis of a dual-drive forklift to change the dual-drive into a four-wheel drive.

[0032] Embodiments of the present invention: This embodiment relates to the specific application of a hydraulic drive forklift steering axle. As the core component, the steering axle 1 is fixedly connected to the double-acting cylinder 2, ensuring the stable transmission of driving force. At both ends of the steering axle 1, flange plates 3 are respectively provided, and a hydraulic motor 4 is fixed on each flange plate 3. This design enables the forklift to change from the traditional two-wheel drive mode to a four-wheel drive mode, significantly improving the power performance. In actual operation, whether facing heavy-duty tasks, high-speed driving, or harsh road conditions, the forklift can exhibit stronger driving ability and higher working efficiency.

[0033] To further optimize the structure and reduce costs, this embodiment adopts a hydraulic drive system. Compared with the traditional gearbox and differential structure, the hydraulic drive system is simpler and easier to maintain.

[0034] The hydraulic motor 4 is connected to the gear pump through a pipeline, the gear pump is then connected to the multi-way valve through a pipeline, and finally controlled by the joystick. This design not only simplifies the internal structure of the forklift but also reduces the manufacturing cost. At the same time, the maintenance of the hydraulic system is relatively simple, effectively reducing the operating cost of the forklift.

[0035] This embodiment also focuses on improving the steering flexibility and stability of the forklift. Through the cooperation of the double-acting cylinder 2 and the arc-shaped connecting block 8, the up-and-down rotation of the flange plate 3 (and the hydraulic motor 4 and the wheel rim 5 fixedly connected thereto) is achieved.

[0036] This design enables the forklift to more flexibly adjust the contact force between the tire and the ground during steering, and the maximum rotation angle can reach 58.87°. Especially when operating on uneven ground, this function is particularly important, greatly improving the overall stability and operation safety of the forklift.

[0037] The hydraulic drive forklift steering axle of this embodiment is installed and used on the basis of a two-wheel drive forklift. This means that users can conveniently upgrade and transform the existing forklift without replacing the entire drive system.

[0038] This design reduces the upgrade cost, making the upgraded forklift have a wider range of applicability. Whether it is in logistics warehousing, industrial production, or other scenarios that require forklift operations, the hydraulic drive forklift steering axle of this embodiment can provide excellent performance and stable performance.

[0039] In summary, the hydraulic drive forklift steering axle of this embodiment shows significant beneficial effects in terms of power performance, structural simplification, cost reduction, flexibility and stability, and applicability, and has broad market application prospects.

[0040] Although specific embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A hydraulically driven forklift steering axle, characterized in that: It includes a steering axle, a two-way cylinder, a flange, a hydraulic motor and a rim. The two-way cylinder is fixedly connected to the middle position of the steering axle. Two flanges are provided, which are respectively located at the two ends of the steering axle. Two hydraulic motors are provided, which are respectively fixed on the flanges on both sides.

2. The hydraulically driven forklift steering axle according to claim 1, characterized in that: The flange is rotatably connected to the left and right sides of one end of the steering bridge through the ears at its left and right ends. The lower end of the flange is provided with an end, which is movably connected to one end of the arc-shaped connecting block, and the telescopic end of the two-way cylinder is movably connected to the other end of the arc-shaped connecting block.

3. The hydraulically driven forklift steering axle according to claim 2, characterized in that: The bidirectional cylinder can drive the flange to rotate up and down through the arc-shaped connecting block through the telescopic action of its telescopic end.

4. The hydraulically driven forklift steering axle according to claim 3, characterized in that: The maximum rotation angle of the flange is 58.87°.

5. The hydraulically driven forklift steering axle according to claim 1, characterized in that: The output end of the hydraulic motor is fixedly connected to the vehicle rim, and the vehicle rim can be fixedly connected to the wheel hub, and a tire can be installed on the wheel hub.

6. The hydraulically driven forklift steering axle according to claim 1, characterized in that: The hydraulic motor is connected to the gear pump through a pipeline, the gear pump is connected to the multi-way valve through a pipeline, and the multi-way valve is connected to the joystick.

7. The hydraulically driven forklift steering axle according to claim 1, characterized in that: The hydraulically driven forklift steering axle is installed and used on the basis of a double-drive forklift, so that the double-drive forklift is upgraded to a four-wheel drive forklift.

8. The hydraulically driven forklift steering axle according to claim 1, characterized in that: The hydraulic drive system has a simpler structure than a traditional gearbox and differential, thereby reducing the manufacturing cost and maintenance cost of the forklift.

9. The hydraulically driven forklift steering axle according to claim 3, characterized in that: The flange, the hydraulic motor and the rim fixed thereto are rotated up and down through the cooperation of the bidirectional cylinder and the arc-shaped connecting block, thereby enhancing the steering flexibility of the forklift and improving the overall stability.

10. The hydraulically driven forklift steering axle according to claim 7, characterized in that: The hydraulically driven forklift steering axle can conveniently upgrade and transform an existing dual-drive forklift without replacing the entire drive system, thereby reducing the upgrade cost and improving the applicability of the forklift.

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