A telescopic handler with double motor drive

Abstract

The utility model discloses a telescopic boom forklift of double motor drive, including walking motor one and walking motor two, walking motor one is connected through transmission shaft no.

Description

Technical Field

[0001] This utility model relates to the field of telescopic boom forklifts, and more particularly to a telescopic boom forklift driven by dual motors. Background Technology

[0002] With the development of the electrification industry, the global market demand for electric telescopic forklifts is increasing. An electric telescopic forklift includes a frame, boom, driver's cab, outriggers, forks, and other components, featuring a compact structure and comprehensive functions. The battery pack is mainly located on the right side of the frame, symmetrically placed with the driver's cab; the motor is generally located in the middle of the frame. The motor of an electric telescopic forklift typically includes a travel motor and a drive motor. The travel motor provides power for vehicle movement, driving the vehicle through the drive axle housing; the drive motor powers the hydraulic pump, providing hydraulic pressure to drive the hydraulic cylinders and other actuators such as the boom.

[0003] However, the existing telescopic boom forklifts have complex drive systems, requiring gearboxes, planetary gear trains, etc., which occupy a large volume and are not suitable for installation; the transmission efficiency is low due to the connection between the gearbox and the axle. Therefore, it is necessary to develop new types of telescopic boom forklifts to overcome these problems. Utility Model Content

[0004] Purpose of the utility model: To address the shortcomings and defects of the existing technology, this utility model provides a telescopic boom forklift with dual motor drive. It uses two identical motors as the travel motors, and the two motors are connected coaxially to directly drive the front and rear axles. It eliminates the transmission mechanisms such as gearboxes and planetary gear systems, which facilitates the layout and improves transmission efficiency.

[0005] Technical solution: The present invention relates to a telescopic boom forklift with dual motor drive, characterized in that: it includes a first travel motor and a second travel motor, the first travel motor and the second travel motor are connected by a second transmission shaft, the first travel motor is connected to the front axle through the first transmission shaft, and the second travel motor is connected to the rear axle through the third transmission shaft, thereby realizing the direct connection between the travel motor and the axle.

[0006] The first walking motor and the second walking motor are of the same model.

[0007] The first walking motor and the second walking motor are connected in series on the same axis.

[0008] The first and second travel motors are positioned at the center line of the vehicle and are located within the vehicle frame, while the working motors are located on both sides of the vehicle.

[0009] The first and second walking motors are connected to the oil pump, and the oil pump is connected to the working motor.

[0010] The axle is connected to the tires at both ends.

[0011] The aforementioned axle is located on a telescopic boom forklift.

[0012] Beneficial Effects: Compared with the prior art, this utility model has the following significant advantages: This utility model eliminates traditional transmission mechanisms such as gearboxes and planetary gear systems. The input speed of the axle is equal to the output speed of the motor, and the motor speed can be infinitely adjusted through the motor driver. Therefore, infinitely adjustable axle speed can be achieved, thus realizing infinitely variable transmission of the vehicle. Simultaneously, because the intermediate transmission mechanism is eliminated, the transmission efficiency of the entire power system is improved. Attached Figure Description

[0013] Figure 1 A schematic diagram of the structure of an existing electric telescopic boom forklift truck;

[0014] Figure 2 This is a schematic diagram of the structure of this utility model;

[0015] In the diagram, 1 is the axle; 2 is drive shaft one; 3 is drive motor one; 4 is drive shaft two; 5 is drive motor two; 6 is drive shaft three; 7 is the tire; 8 is the oil pump; and 9 is the working motor. Detailed Implementation

[0016] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0017] This utility model relates to a telescopic boom forklift: a multi-purpose forklift with off-road capabilities and a telescopic boom. The telescopic boom forklift can be equipped with different attachments to achieve its multi-functionality. It is mainly used in material storage, construction, decoration, farm material handling, mining, and other industries. The three core components of the electric telescopic boom forklift are the power battery, the motor, and the motor driver. The motor generally includes a travel motor and a drive motor. The travel motor provides power for the vehicle's movement, while the drive motor powers the vehicle's hydraulic pump.

[0018] This invention uses two motors as the travel motors to drive the vehicle. The two motors are connected to the axle in series via drive shafts and are applied to telescopic boom forklifts. The travel motors are two identical models with the same performance, and the drive power is evenly distributed between them. The two motors are positioned front to back at the center of the vehicle.

[0019] The present invention relates to a dual-motor driven telescopic boom forklift, comprising a first travel motor 3 and a second travel motor 5. The first travel motor 3 and the second travel motor 5 are connected by a second transmission shaft 4. The first travel motor 3 is connected to the front axle 1 through a first transmission shaft 2, and the second travel motor 5 is connected to the rear axle 1 through a third transmission shaft 6, thereby realizing a direct connection between the travel motors and the axles.

[0020] The travel motor 3 and travel motor 5 of this utility model are of the same model. Travel motor 3 and travel motor 5 are connected in series coaxially. Travel motor 3 and travel motor 5 are positioned at the vehicle's centerline and arranged within the vehicle frame, while the working motor 9 is arranged on both sides of the vehicle. Travel motor 3 and travel motor 5 are connected to the oil pump 8, and the oil pump 8 is connected to the working motor 9. The ends of the axle 1 are connected to the tires 7. The axle 1 is located on the telescopic boom forklift.

[0021] In the power system of this utility model, the two travel motors are of the same specification and model. When the vehicle is moving, because they are coaxially connected, the two motors rotate at the same speed, and the traveling torque is evenly distributed between them. The motor output performance is essentially the same, ensuring consistent motor control output and a simple control scheme. The working motor is directly connected to the oil pump; the motor's rotation provides power to the vehicle's oil pump, thereby increasing the hydraulic pressure and driving the oil cylinder to move the boom and other actuators. Figure 2 As shown, the two travel motors are placed at the front and rear of the vehicle's centerline and are arranged within the vehicle frame. The working motors can be arranged on both sides of the vehicle. The overall power system is compactly arranged, which can meet the requirements of the narrow space layout of the telescopic boom forklift.

[0022] This utility model of an electric telescopic forklift uses a dual-motor drive system, distributing drive power to two motors to reduce the power and current of a single motor and minimize cable voltage drop. The dual-motor drive allows for the use of a lower voltage platform, reducing system voltage requirements and minimizing battery pack space, thus meeting the space layout requirements of small electric telescopic forklifts. The system uses two identical motors connected in series coaxially to directly drive the front and rear axles, eliminating the need for a gearbox. This results in a simple structure, small footprint, and consistent motor performance, ensuring consistent motor output control and a simple control scheme.

Claims

1. A telescopic boom forklift driven by dual motors, characterized in that: It includes a first walking motor (3) and a second walking motor (5). The first walking motor (3) and the second walking motor (5) are connected by a second transmission shaft (4). The first walking motor (3) is connected to the front axle (1) through a first transmission shaft (2). The second walking motor (5) is connected to the rear axle (1) through a third transmission shaft (6), thus realizing the direct connection between the walking motor and the axle.

2. The telescopic boom forklift with dual motor drive according to claim 1, characterized in that: The walking motor 1 (3) and walking motor 2 (5) are the same type of motor.

3. The telescopic boom forklift with dual motor drive according to claim 1, characterized in that: The first walking motor (3) and the second walking motor (5) are connected in series on the same axis.

4. The telescopic boom forklift with dual motor drive according to claim 1, characterized in that: The first walking motor (3) and the second walking motor (5) are placed at the center line of the vehicle and arranged inside the vehicle frame, while the working motor (9) is arranged on both sides of the vehicle.

5. The telescopic boom forklift with dual motor drive according to claim 1, characterized in that: The first walking motor (3) and the second walking motor (5) are connected to the oil pump (8), and the oil pump (8) is connected to the working motor (9).

6. The telescopic boom forklift with dual motor drive according to claim 1, characterized in that: The axle (1) is connected to the tires (7) at both ends.

7. The telescopic boom forklift with dual motor drive according to claim 1, characterized in that: The axle (1) is located on the telescopic boom forklift.

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