CN-121990505-A - Variable-load type counter-balanced forklift

Abstract

The invention discloses a variable load type counter weight forklift, which comprises a forklift body, a front driving wheel, a counter weight position adjusting system, a rear telescopic steering wheel and a portal system arranged at the front part of the forklift body, wherein the counter weight position adjusting system comprises a counter weight, a connecting counter weight oil cylinder and a guide rail, the counter weight is connected with the forklift body in a sliding manner through the guide rail, one end of the connecting counter weight oil cylinder is hinged with the forklift body, the other end of the connecting counter weight oil cylinder is hinged with the counter weight and is used for driving the counter weight to move back and forth along the guide rail, the rear telescopic steering wheel is arranged at the tail part of the forklift body, and the rear telescopic steering wheel has a steering function and a telescopic function perpendicular to a ground plane. The stabilizing moment of the whole forklift can be changed by adjusting the front and back positions of the counter weight, so that a single forklift can safely adapt to different rated loads. The user does not need to purchase a plurality of forklifts for cargoes with different weights, and the investment of fixed assets and the equipment management cost are obviously reduced.

Inventors

• LI CHANG
• DU XIAOLIN
• Shi Chenyong
• GUO WENGANG
• ZHANG QINGBO

Assignees

• 徐州徐工特种工程机械有限公司

Dates

Publication Date

20260508

Application Date

20260330

Claims (10)

1. 1. The variable load type counter-balanced forklift is characterized by comprising a forklift body, a front driving wheel, a counter weight position adjusting system, a rear telescopic steering wheel and a portal frame system arranged at the front part of the forklift body; the counterweight position adjusting system comprises a counterweight, a connecting counterweight oil cylinder and a guide rail, wherein the counterweight is in sliding connection with the vehicle body through the guide rail, one end of the connecting counterweight oil cylinder is hinged with the vehicle body, and the other end of the connecting counterweight oil cylinder is hinged with the counterweight and is used for driving the counterweight to move forwards and backwards along the guide rail; The rear telescopic steering wheel is arranged at the tail part of the vehicle body and has a steering function and a telescopic function perpendicular to the ground plane.
2. 2. The variable load type counter weight fork truck according to claim 1, wherein the guide rail is a U-shaped groove guide rail, fixedly mounted on the truck body, and the counter weight is provided with a rotating shaft or a sliding block matched with the U-shaped groove guide rail.
3. 3. The variable load type counter weight forklift truck according to claim 1 or 2, wherein the connecting counter weight cylinder is connected with a hydraulic multi-way valve, and the stroke of the connecting counter weight cylinder is adjusted by controlling the hydraulic multi-way valve.
4. 4. The variable load type counter weight fork lift truck of claim 1, wherein the rear telescopic steering wheel comprises a steering actuator for driving the wheel to steer and a telescopic ram for driving the wheel assembly to telescope perpendicular to the ground plane.
5. 5. The variable load type counter-balanced forklift of claim 4, wherein the steering actuator of the rear telescopic steering wheel is a steer-by-wire actuator.
6. 6. The variable load type counter weight fork lift truck of claim 1, wherein the mast system is fixedly connected to the body without a separate mast tilt cylinder.
7. 7. The variable load type counter weight fork lift truck of claim 1, wherein the front drive wheel is a front electromagnetic drive wheel.
8. 8. The variable load type counter weight fork lift truck of claim 7, wherein the front electromagnetic drive wheel is connected to an electric drive control system.
9. 9. The variable load type counter-balanced forklift of claim 1, wherein the center of gravity of the counterweight is located on a line along which the rail slides.
10. 10. The variable load type counter weight forklift of claim 1, wherein said body is provided with a reinforcing frame structure for mounting said connecting counter weight cylinder and said guide rail.

Description

Variable-load type counter-balanced forklift Technical Field The invention relates to the technical field of engineering machinery, in particular to a variable-load type counter-balanced forklift. Background A fork lift truck is a widely used material handling apparatus, the load carrying capacity of which is determined primarily by the weight and position of the counterweight. In the prior art, the rated load of each fork-lift truck is fixed, preset by the manufacturer according to the specifications and position of the counterweight. When a user needs to carry cargoes with different weights, a plurality of forklifts with different loading levels are often required to be configured. This not only increases the fixed asset investment for the user, but also creates complexity in device management and maintenance. Particularly, when the weight distribution of the cargoes is large in difference or temporary and urgent carrying tasks exist, the forklift with fixed load cannot be flexibly adapted, and the equipment utilization rate is low or the carrying efficiency is reduced. Therefore, a forklift capable of dynamically adjusting the self-loading capacity according to the weight of the actually carried goods is urgently needed, so that one machine is multipurpose, the cost of a user is reduced, and the utilization rate of equipment is improved. Disclosure of Invention In view of this, the present invention provides a variable load type counter-balanced forklift with a load carrying capacity that can be continuously or stepwisely adjusted according to the weight of the load, thereby covering a wider load carrying range with one piece of equipment. In order to achieve the above purpose, the present invention provides the following technical solutions: A variable load type counter weight forklift comprises a forklift body, a front driving wheel, a counter weight position adjusting system, a rear telescopic steering wheel and a portal system arranged at the front part of the forklift body, wherein the counter weight position adjusting system comprises a counter weight, a connecting counter weight oil cylinder and a guide rail, the counter weight is connected with the forklift body in a sliding mode through the guide rail, one end of the connecting counter weight oil cylinder is hinged with the forklift body, the other end of the connecting counter weight oil cylinder is hinged with the counter weight and used for driving the counter weight to move back and forth along the guide rail, the rear telescopic steering wheel is arranged at the tail part of the forklift body, and the rear telescopic steering wheel has a steering function and a telescopic function perpendicular to a ground plane. Preferably, the guide rail is a U-shaped groove guide rail and is fixedly arranged on the vehicle body, and the counterweight is provided with a rotating shaft or a sliding block matched with the U-shaped groove guide rail. Preferably, the connecting counterweight cylinder is connected with a hydraulic multi-way valve, and the stroke of the connecting counterweight cylinder is adjusted by controlling the hydraulic multi-way valve. Preferably, the rear telescopic steering wheel comprises a steering actuator and a telescopic oil cylinder, wherein the steering actuator is used for driving the wheels to steer, and the telescopic oil cylinder is used for driving the wheel assembly to stretch and retract perpendicular to the ground plane. Preferably, the steering actuator of the rear telescopic steering wheel is a steer-by-wire actuator. Preferably, the portal system is fixedly connected with the vehicle body, and an independent portal tilting cylinder is not arranged. Preferably, the front driving wheel is a front electromagnetic driving wheel. Preferably, the front electromagnetic driving wheel is connected with an electric driving control system. Preferably, the gravity center of the counterweight is located on a straight line in which the sliding direction of the guide rail is located. Preferably, the vehicle body is provided with a reinforcing frame structure for mounting the connecting counterweight cylinder and the guide rail. The beneficial effects of the invention are as follows: 1. the stabilizing moment of the whole forklift can be changed by adjusting the front and back positions of the counter weight, so that a single forklift can safely adapt to different rated loads. The user does not need to purchase a plurality of forklifts for cargoes with different weights, and the investment of fixed assets and the equipment management cost are obviously reduced. 2. When facing various cargoes or urgent handling tasks with large weight difference, operators can quickly adjust the loading state of the forklift without changing equipment, and the response speed and the overall operation efficiency of logistics handling are greatly improved. 3. The novel rear telescopic steering wheel design not only can realize the steering function, bu