CN210391302U

CN210391302U - Forklift steering structure

Info

Publication number: CN210391302U
Application number: CN201920685035.1U
Authority: CN
Inventors: 过超群; 陈陶; 沈金龙
Original assignee: Linde China Forklift Truck Corp Ltd
Current assignee: Linde China Forklift Truck Corp Ltd
Priority date: 2019-05-14
Filing date: 2019-05-14
Publication date: 2020-04-24
Anticipated expiration: 2029-05-14

Abstract

A steering structure of a forklift comprises a front axle, a brake device, a steering axle and a steering device, wherein the brake device is arranged on the front axle to drive a front wheel to decelerate or brake and is provided with a brake cable; the steering device is arranged on a steering axle to drive the rear wheel to steer; the method is characterized in that: an auxiliary steering mechanism is also arranged and comprises a sliding block and a push rod; the sliding block is movably arranged on the steering axle and fixedly connected with the end part of the brake cable, a sliding groove is further formed in the sliding block, one end of the push rod is fixedly connected with an output shaft of the steering device, and the other end of the push rod is located in the sliding groove. The utility model discloses when turning to and reaching certain angle, order about the brake cable linkage, then left front wheel and right front wheel move and form speed difference, turn to and change the realization, avoid the rear wheel because the not enough slip phenomenon that appears of adhesive force.

Description

Forklift steering structure

Technical Field

The utility model relates to a field, especially a fork truck turn to structure.

Background

Fork truck refers to various wheeled haulage vehicles that load and unload, stack and short distance transportation operation to finished pallet goods. Therefore, the forklift needs a smaller turning radius to meet the narrow requirement of an industrial field, and the forklift usually adopts rear axle steering instead of front axle steering for more flexibility.

Forklifts typically include a power section, a chassis, a working section, electrical equipment, and the like. The power part supplies power required by loading and unloading goods and running the chassis to the forklift working part. The working part is a structure which directly bears the weight of goods and completes the working procedures of forking, lifting, stacking and the like of the goods, and comprises a fork, a fork frame, a portal frame, a related hydraulic transmission system and the like.

The chassis comprises a transmission system, a running system, a steering system, a braking system and the like. The power train receives power and transmits the power to the running train. The running system ensures the operation of the forklift and supports the whole forklift, and comprises a bracket, a front axle, a rear axle, wheels, a suspension and the like, wherein the front axle is a driving axle, and the rear axle is a steering axle. The steering system controls the action of the vehicle on the rear axle to realize steering, and generally comprises a steering gear and a steering transmission mechanism, wherein an operation mechanism of the steering gear is positioned in a cab. The braking system controls the deceleration or stop of the wheels on the front axle, and generally comprises a brake and a brake transmission mechanism, and an operating mechanism of the brake transmission mechanism is located in a cab.

Aiming at the structure of a single-drive and mechanical front axle, a left front wheel and a right front wheel (driving wheels) cannot respond in time to form a larger differential speed in the steering process, and particularly, the situation of backward sliding movement is easy to occur under the condition of the maximum steering angle.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a main aim at overcomes the above-mentioned defect among the prior art, provides a simple structure, realizes easy fork truck's the structure that turns to.

The utility model adopts the following technical scheme:

a steering structure of a forklift comprises a front axle, a steering axle and a steering device, wherein the steering device is arranged on the steering axle to drive a rear wheel to steer; the method is characterized in that: the brake device is arranged on the front axle to drive the front wheels to decelerate or brake, and is provided with a brake cable; the auxiliary steering mechanism comprises a sliding block and a push rod, the sliding block is movably arranged on a steering axle and fixedly connected with the end part of a brake cable, a sliding groove is further formed in the sliding block, one end of the push rod is fixedly connected with an output shaft of a steering device, and the other end of the push rod is located in the sliding groove.

Preferably, the sliding groove is formed on the top or the side of the sliding block.

Preferably, the sliding block is located below the output shaft, and the sliding groove is parallel to the output shaft.

Preferably, the steering axle is provided with a guide rail, and the sliding block is in sliding fit with the guide rail.

Preferably, the braking device comprises a left braking device and a right braking device, and the steering device comprises a left steering device and a right steering device; the steering device comprises two groups of auxiliary steering mechanisms, wherein one group of auxiliary steering mechanisms is connected between a left brake device and a left steering device, and the other group of auxiliary steering mechanisms is connected between a right brake device and a right steering device.

Preferably, the steering device comprises a steering gear and a hydraulic oil cylinder; the steering gear is connected with the rear wheel, and the output shaft of the hydraulic oil cylinder is connected with the steering gear.

Preferably, the brake device is provided with a brake, and the brake cable is connected with the brake.

From the above description of the present invention, compared with the prior art, the present invention has the following advantages:

1. the utility model discloses a structure has increased brake equipment and supplementary steering mechanism, turns to when device drive rear wheel turns to in control, when turning to and reaching certain angle, and the brake cable linkage makes left front wheel and right front wheel move the formation speed poor, turns to change and realizes, avoids the rear wheel because the not enough slip phenomenon that appears of adhesive force.

2. The utility model discloses a structure need not the counter weight and increases the adhesive force of rear axle to can alleviate whole car weight, will promote fork truck's performance (for example climbing ability), and can reduce the energy consumption, add long battery live time.

3. The utility model discloses an auxiliary steering mechanism, simple structure, realization are easy, are applicable to the electric drive motor and add mechanical bridge car type fork truck.

Drawings

FIG. 1 is a view of the structure of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1;

wherein: 10. the brake system comprises a front axle, 20, a brake device, 21, a brake cable, 30, a steering axle, 31, a guide rail, 40, a steering device, 41, an output shaft, 42, a hydraulic oil cylinder, 50, a sliding block, 51, a sliding groove, 52, a convex column, 60 and a push rod.

Detailed Description

The present invention will be further described with reference to the following detailed description.

Referring to fig. 1 and 2, a steering structure of a forklift includes a front axle 10, a brake device 20, a steering axle 30, a steering device 40, an auxiliary steering mechanism, and the like. The front axle 10 is a drive axle to which two front wheels, a left front wheel and a right front wheel, are connected, not shown in the figure. The front axle 10 can increase the front axle load during load transportation, improve the adhesion quality on the front wheels, and ensure that the driving force of the forklift engine can be fully exerted.

The brake device 20 is a mechanical brake structure, and includes a brake and a brake cable 21, the brake is mounted on the front axle 10 and used for driving the front wheel to decelerate or stop, the brake cable 21 is used for controlling the brake, and the brake can adopt a brake commonly available in the market, such as a disc brake. In addition, the braking device 20 includes a left braking device and a right braking device, which are respectively used for driving the two front wheels to move. The brake device 20 is an additional brake device, and the forklift is also provided with another set of brake system, and the control mechanism of the forklift is located in a cab, such as a parking brake. The parking brake and the brake device 20 are connected in series, and the parking brake and the brake device cannot work simultaneously. When the parking brake of the cab is acted, the brake device 20 can not be acted; the brake device 20 can be operated after the parking brake of the cab is released.

Two rear wheels, a left rear wheel and a right rear wheel, are connected to the steering axle 30. The steering device 40 is mounted on the steering axle 30 and comprises a steering gear which drives the rear wheels to steer and a hydraulic cylinder 42, the hydraulic cylinder 42 being provided with an output shaft 41, the output shaft 41 being connected to the steering gear. The steering device 40 includes a left steering device and a right steering device, which are respectively used for driving the two rear wheels to act. The steering mechanism of the steering device 40 is located in the cab and is used for controlling the working state of the hydraulic oil cylinder 42.

The auxiliary steering mechanism comprises a sliding block 50 and a push rod 60, wherein the sliding block 50 is movably arranged on the steering axle 30 and is fixedly connected with the end part of the brake cable 21, and a sliding groove 51 is further arranged on the sliding block 50. Specifically, the slide block 50 is located below the output shaft 41, and the slide groove 51 is parallel to the output shaft 41. The sliding block 50 is provided with a convex pillar 52 at the side or end, and the brake cable 21 is fixed at the convex pillar 52 at a non-unique position. The sliding groove 51 is formed on the top or side of the sliding block 50, and the position is not exclusive, and the top is preferred. The length of the sliding groove can be designed according to needs and is not limited.

Further, the steering axle 30 is provided with a guide rail 31, the slide block 50 is slidably engaged with the guide rail 31, and the guide rail 31 is parallel to the output shaft 41. I.e., the moving direction of the output shaft 41 is the same as the moving direction of the slide block 50.

One end of the push rod 60 is fixedly connected with the output shaft 41 of the hydraulic oil cylinder 42, and the other end is positioned in the sliding groove 51. The utility model discloses can set up two sets of supplementary steering mechanism, a set of connection is between left brake equipment and left steering device, and another group's connection is between right brake equipment and right steering device.

Use the left side to turn to the example, when controlling steering wheel anticlockwise rotation at the driver's cabin, then the output shaft 41 of hydraulic cylinder 42 of the left side device that turns to moves, the left rear wheel of steering gear drive turns to, push rod 60 is along spout 51 synchronous motion, turn to the angle crescent when the left side, then push rod 60 can support and lean on in spout 51 one end and drive sliding block 50 and remove, sliding block 50 stimulates left brake equipment's brake cable 21, then the left front wheel of brake action drive slows down, the braking power crescent, brake until the left front wheel brakes, then the speed and the drive power of right front wheel increase relatively, fork truck turns to left this moment more smoothly, can avoid appearing backward sliding.

The above-mentioned be the utility model discloses a concrete implementation way, nevertheless the utility model discloses a design concept is not limited to this, and the ordinary use of this design is right the utility model discloses carry out immaterial change, all should belong to the act of infringement the protection scope of the utility model.

Claims

1. A steering structure of a forklift comprises a front axle, a steering axle and a steering device, wherein the steering device is arranged on the steering axle to drive a rear wheel to steer; the method is characterized in that: the brake device is arranged on the front axle to drive the front wheels to decelerate or brake, and is provided with a brake cable; the auxiliary steering mechanism comprises a sliding block and a push rod, the sliding block is movably arranged on a steering axle and fixedly connected with the end part of a brake cable, a sliding groove is further formed in the sliding block, one end of the push rod is fixedly connected with an output shaft of a steering device, and the other end of the push rod is located in the sliding groove.

2. The steering structure of a forklift according to claim 1, wherein: the sliding groove is formed on the top or the side of the sliding block.

3. The steering structure of a forklift according to claim 1, wherein: the sliding block is located below the output shaft, and the sliding groove is parallel to the output shaft.

4. The steering structure of a forklift according to claim 1, wherein: the steering axle is provided with a guide rail, and the sliding block is in sliding fit with the guide rail.

5. The steering structure of a forklift according to claim 1, wherein: the brake device comprises a left brake device and a right brake device, and the steering device comprises a left steering device and a right steering device; the steering device comprises two groups of auxiliary steering mechanisms, wherein one group of auxiliary steering mechanisms is connected between a left brake device and a left steering device, and the other group of auxiliary steering mechanisms is connected between a right brake device and a right steering device.

6. The steering structure of a forklift according to claim 1, wherein: the steering device comprises a steering gear and a hydraulic oil cylinder; the steering gear is connected with the rear wheel, and the output shaft of the hydraulic oil cylinder is connected with the steering gear.

7. The steering structure of a forklift according to claim 1, wherein: the brake device is provided with a brake, and the brake cable is connected with the brake.