CN216269485U - Electric power-assisted steering system of electric stacker - Google Patents

Abstract

The utility model discloses an electric power-assisted steering system of an electric stacker, which comprises: control the handle, drive mechanism, power assisted steering ware, drive unit and drive wheel, control the handle and pass through drive mechanism and be connected with power assisted steering ware's input, power assisted steering ware's output is connected with drive unit through the drive connecting seat, drive unit is used for controlling the drive wheel walking, input and output pass through mechanical transmission and connect, control the handle and be used for driving the input through drive mechanism and rotate, when power assisted steering ware circular telegram, increase the moment of torsion of output, when power assisted steering ware cuts off the power supply, drive the output shaft through mechanical transmission and rotate, rotate with driving drive unit, and then drive the drive wheel and turn to. Compared with pure manual steering, the working strength can be reduced, and the operation comfort is improved; compared with a pure electric power steering structure, the electric power steering device has the advantages of simple structure, low cost and higher steering reliability.

Description

Electric power-assisted steering system of electric stacker

Technical Field

The utility model relates to the technical field of electric stacking vehicles, in particular to an electric power-assisted steering system of an electric stacking vehicle.

Background

The electric piling car is generally of a four-pivot structure, the driving wheel is located on one side of the car body, and the control handle is located in the middle of the car body in order to facilitate an operator to stand on the pedal to operate.

There are two current ways of transmitting steering force: one is manual steering, and is connected with an operating handle and a driving wheel through a transmission mechanism; the other type is electric steering, the steering sensor is used for detecting the steering action of the control handle, a signal is transmitted to the steering controller, the steering controller sends a steering signal to the steering motor, and the steering motor transmits the steering force to the steering wheel through the gear piece.

All steering force of manual steering needs to be provided manually, the steering force is large, the operation is difficult, the comfort is poor, and particularly when heavy load is faced, the driving wheels are difficult to control to steer; the electric steering adopts a large number of electric elements, the cost is high, and once the electric elements are failed or lose electricity, the steering capacity is lost, so the reliability is poor, the steering is delayed, the steering time difference exists between an operator control handle and the steering of a vehicle, and certain potential safety hazards exist.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an electric power-assisted steering system of an electric stacker truck, which can ensure the reliability of steering and has simple structure and lower cost.

In order to achieve the purpose, the utility model provides the following technical scheme:

an electric power steering system of an electric stacker truck, comprising: control handle, drive mechanism, power assisted steering ware, drive unit and drive wheel, control handle pass through drive mechanism with power assisted steering ware's input is connected, power assisted steering ware's output pass through the drive connecting seat with drive unit connects, drive unit is used for controlling the drive wheel walking, the input with the output passes through mechanical transmission and connects, control handle is used for passing through drive mechanism drives the input rotates, works as when power assisted steering ware circular telegram, the increase the moment of torsion of output, works as when power assisted steering ware cuts off the power supply, passes through mechanical transmission drives the output rotates, in order to drive unit rotates, and then drives the drive wheel turns to.

Preferably, the driving unit comprises a connecting support, a walking motor and a reduction gearbox, the walking motor is used for controlling the driving wheel to walk through the reduction gearbox, the lower end of the connecting support is fixedly connected with the walking motor or the reduction gearbox, the upper end of the connecting support is rotatably connected with the vehicle body through a vertically arranged rotating shaft, and the upper end of the rotating shaft is fixedly connected with the driving connecting seat.

Preferably, the power steering device further comprises a support frame for accommodating the power steering device, and the support frame is fixedly connected with a vehicle body.

Preferably, the support frame includes an upper mount and a lower mount, the power steering gear being mounted between the upper mount and the lower mount.

Preferably, the transmission mechanism comprises a first chain wheel, a second chain wheel and a chain, the first chain wheel is connected with the lower end of the control handle, the second chain wheel is fixedly connected with the input end, and the chain is connected with the first chain wheel and the second chain wheel.

Preferably, the lower end of the control handle is hinged to a handle seat, the lower end of the handle seat is connected with the first chain wheel through a vertically arranged connecting shaft, and the connecting shaft is connected with the vehicle body through a bearing.

Compared with the prior art, the technical scheme has the following advantages:

according to the electric power-assisted steering system of the electric stacker truck, when the power-assisted steering device is powered on, the torque of the output end of the power-assisted steering device can be increased, and when the power-assisted steering device is powered off, the output end can be driven to rotate through the mechanical transmission device arranged in the power-assisted steering device, so that the driving unit is driven to rotate, and further the driving wheel is driven to steer. Compared with pure manual steering, the working strength can be reduced, and the operation comfort is improved; compared with a pure electric power steering structure, the electric power steering device has the advantages of simple structure, low cost and higher steering reliability.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

Fig. 1 is a schematic front view of an electric power steering system of an electric stacker truck;

fig. 2 is a schematic axial structure diagram of an electric power steering system of the electric stacker.

The reference numbers are as follows:

the device comprises a control handle 1, a handle seat 2, a vehicle body 3, a first double-row angular contact ball bearing 4, a first chain wheel 5, a tensioning mechanism 6, a chain 7, a second chain wheel 8, a second double-row angular contact ball bearing 9, a spline shaft 10, a power steering gear 11, an upper mounting seat 12, a lower mounting seat 13, a driving connecting seat 14, a deep groove ball bearing 15, a tapered roller bearing 16, a walking motor 17, a reduction gearbox 18, a driving wheel 19 and a connecting support 20.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 and fig. 2, fig. 1 is a schematic front view of an electric power steering system of an electric stacker truck; fig. 2 is a schematic axial structure diagram of an electric power steering system of the electric stacker.

The embodiment of the utility model provides an electric power-assisted steering system of an electric stacker, which comprises: the power-assisted steering device comprises a control handle 1, a transmission mechanism, a power-assisted steering device 11, a driving unit and a driving wheel 19, wherein the control handle 1 is connected with the input end of the power-assisted steering device 11 through the transmission mechanism, the transmission mechanism can be in other structural forms such as chain transmission, belt transmission, gear transmission, steel wire rope transmission and the like, the output end of the power-assisted steering device 11 is connected with the driving unit through a driving connecting seat 14, the driving unit mainly has the function of controlling the driving wheel 19 to walk, the input end and the output end of the power-assisted steering device 11 are connected through a mechanical transmission device, when the control handle 1 drives the input end to rotate through the transmission mechanism, the torque of the output end can be increased by the power-assisted steering device 11 so as to drive the driving unit to rotate, and further drive the driving wheel 19 to steer, even if the power-assisted steering device 11 loses the power effect, the output end can be driven to rotate through the mechanical transmission device inside, so that the steering force applied to the control handle 1 can be transmitted to the driving wheel 19, compared with pure manual steering, the working strength can be reduced, and the operation comfort is improved; for pure electric power assisted steering structure, simple structure, with low costs have higher reliability that turns to moreover, can also provide more clear road feel and more suitable feeling in addition, operator control handle 1 to the vehicle turn to can not have the time difference, and then improve the security that turns to.

The driving unit comprises a connecting support 20, a walking motor 17 and a reduction gearbox 18, the walking motor 17 is used for controlling a driving wheel 19 to walk through the reduction gearbox 18, the lower end of the connecting support 20 is fixedly connected with the walking motor 17 or the reduction gearbox 18, the upper end of the connecting support 20 is rotatably connected with the vehicle body 3 through a vertically arranged rotating shaft, for example, the rotating shaft can be installed through a deep groove ball bearing 15 and a tapered roller bearing 16, the upper end of the rotating shaft is fixedly connected with a driving connecting seat 14, the rotating shaft can be connected with the driving connecting seat 14 through a bolt, or connected through a shifting fork structure, a coupler and other modes, namely, the rotating shaft, the connecting support 20, the walking motor 17, the reduction gearbox 18 and the driving wheel 19 can be synchronously turned.

Further, the vehicle further comprises a supporting frame for accommodating the power steering 11, and the supporting frame is fixedly connected with the vehicle body 3. The support frame specifically includes an upper mount 12 and a lower mount 13, the power steering 11 is mounted between the upper mount 12 and the lower mount 13, and the upper mount 12 and the lower mount 13 may be connected by bolts.

For the chain type transmission mechanism, specifically include first sprocket 5, second sprocket 8 and chain 7, first sprocket 5 is connected with the lower extreme of control handle 1, and first sprocket 5 preferably adopts the flat key with control handle 1 to be connected, in order to guarantee both pivoted uniformity, specifically, the lower extreme of control handle 1 is articulated with handle seat 2, and the lower extreme of handle seat 2 is connected with first sprocket 5 through the connecting axle of vertical setting, and the connecting axle passes through the bearing and is connected with automobile body 3, and this bearing is preferably first double-row angular contact ball bearing 4. The second chain wheel 8 is fixedly connected with the input end, and specifically can be connected through a spline shaft 10, the spline shaft 10 can be mounted on the upper mounting seat 12 through a second double-row angular contact ball bearing 9, and the spline shaft 10 is provided with an internal spline which is sleeved with an external spline on the input end of the power steering 11. Wherein can set up the kidney slot on second sprocket 8, set up the screw hole on the integral key shaft 10, second sprocket 8 accessible kidney slot and integral key shaft 10 relative rotation to finely tune, its purpose is to make the drive wheel 19 orientation unanimous with control handle 1 orientation, after unanimous, screw up the bolt, with fixed second sprocket 8 and integral key shaft 10 can, chain 7 is connected with first sprocket 5 and second sprocket 8, wherein still can set up straining device 6 on automobile body 3, with the elasticity degree of regulation chain 7. The gear ratio of the first chain wheel 5 and the second chain wheel 8 is preferably 1:1, so as to ensure synchronous steering, and can be selected according to specific situations, for example, the driving unit needs to steer left and right by 90 degrees respectively, but the control handle 1 can only steer left and right by 70 degrees respectively due to space limitation, and at the moment, the control handle can be realized by selecting a proper gear ratio, so as to ensure that the control handle is in a limited rotation range, and the steering of the driving unit in a larger range is realized.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The electric power-assisted steering system of the electric stacker truck provided by the utility model is described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.

Claims (6)

1. An electric power-assisted steering system of an electric stacker is characterized by comprising: control handle, drive mechanism, power assisted steering ware, drive unit and drive wheel, control handle pass through drive mechanism with power assisted steering ware's input is connected, power assisted steering ware's output pass through the drive connecting seat with drive unit connects, drive unit is used for controlling the drive wheel walking, the input with the output passes through mechanical transmission and connects, control handle is used for passing through drive mechanism drives the input rotates, works as when power assisted steering ware circular telegram, the increase the moment of torsion of output, works as when power assisted steering ware cuts off the power supply, passes through mechanical transmission drives the output rotates, in order to drive unit rotates, and then drives the drive wheel turns to.

2. The electric power-assisted steering system of the electric stacker truck as claimed in claim 1, wherein the driving unit comprises a connecting bracket, a traveling motor and a reduction gearbox, the traveling motor is used for controlling the driving wheel to travel through the reduction gearbox, the lower end of the connecting bracket is fixedly connected with the traveling motor or the reduction gearbox, the upper end of the connecting bracket is rotatably connected with a truck body through a vertically arranged rotating shaft, and the upper end of the rotating shaft is fixedly connected with the driving connecting seat.

3. The electric power steering system of claim 1, further comprising a support frame for receiving the power steering gear, the support frame being affixed to the vehicle body.

4. The electric stacker truck electric power steering system of claim 3, wherein the support frame includes an upper mount and a lower mount, the power steering gear being mounted between the upper mount and the lower mount.

5. The electric power steering system of claim 4, wherein the transmission mechanism comprises a first sprocket, a second sprocket and a chain, the first sprocket is connected to the lower end of the control handle, the second sprocket is fixedly connected to the input end, and the chain is connected to the first sprocket and the second sprocket.

6. The electric power-assisted steering system of the electric stacker truck of claim 5, wherein the lower end of the control handle is hinged to a handle seat, the lower end of the handle seat is connected with the first chain wheel through a vertically arranged connecting shaft, and the connecting shaft is connected with the truck body through a bearing.

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