阅读说明：本技术 一种电子转向机构 (Electronic steering mechanism ) 是由 黄强强 张志宇 卫恺 施程臣 汪秋云 王徐进 于 2019-11-08 设计创作，主要内容包括：本发明涉及自动化机械设备领域,具体涉及工业车辆转向控制装置结构设计。本发明是通过以下技术方案得以实现的：一种电子转向机构,包含转轴总成,还包含转向座,所述转向座上设有扭簧,所述扭簧包含两个扭簧伸出端；所述转轴总成包含推杆,两个所述扭簧伸出端位于所述推杆的两侧,所述转轴总成连接有电位器。本发明的目的是提供一种电子转向机构,实现差动转向,实现车辆可以更轻便地转向,且增强整个手柄的回中性。(The invention relates to the field of automatic mechanical equipment, in particular to a structural design of an industrial vehicle steering control device. The invention is realized by the following technical scheme: an electronic steering mechanism comprises a rotating shaft assembly and a steering seat, wherein a torsion spring is arranged on the steering seat and comprises two extension ends of the torsion spring; the rotating shaft assembly comprises push rods, the extending ends of the two torsion springs are located on two sides of the push rods, and the rotating shaft assembly is connected with a potentiometer. The invention aims to provide an electronic steering mechanism, which realizes differential steering, realizes that a vehicle can be steered more conveniently and enhances the return neutrality of the whole handle.)

1. An electronic steering mechanism comprises a rotating shaft assembly (1), and is characterized in that: the steering mechanism is characterized by further comprising a steering seat (3), wherein a torsion spring (2) is arranged on the steering seat (3), and the torsion spring (2) comprises two torsion spring extending ends (21); the rotating shaft assembly (1) comprises a push rod (13), two extension ends (21) of the torsion springs are located on two sides of the push rod (13), and the rotating shaft assembly (1) is connected with a potentiometer (4).

2. An electronic steering mechanism according to claim 1, wherein: the rotating shaft assembly (1) comprises a rotating shaft (11) and a transverse connecting piece (12), the push rod (13) is connected to the transverse connecting piece (12), and the potentiometer (4) is connected to the lower end of the rotating shaft (11).

3. An electronic steering mechanism according to claim 1, wherein: the steering seat (3) comprises a main seat part (31) and an overhanging sheet (32) connected with the main seat part (31), and two side limiting columns (34) used for limiting the rotation stroke of the push rod (13) are arranged on the overhanging sheet (32).

4. An electronic steering mechanism according to claim 1, wherein: in the handle centering state, the distance between the two extension ends (21) of the torsion spring in the horizontal direction is equal to the outer diameter of the push rod (13).

5. An electronic steering mechanism according to claim 3, wherein: the push rod (13) comprises a bolt and an outer sleeve sleeved on the outer side of the bolt, an auxiliary limiting groove (33) is formed in the extending piece (32), and the length of the groove of the auxiliary limiting groove (33) is smaller than the distance between the two side limiting columns (34).

6. An electronic steering mechanism according to claim 3, wherein: the middle limiting column (6) is arranged on the outward extending sheet (32), the middle limiting column (6) is located in the middle of the two side limiting columns (34), and under the condition that the handle is in the middle, the two extending ends (21) of the torsion springs abut against the two sides of the middle limiting column (6).

7. An electronic steering mechanism according to claim 6, wherein: the centering device (7) is used for determining the relative position of the rotating shaft assembly (1) relative to the middle limit column (6) in the horizontal direction.

8. An electronic steering mechanism according to claim 7, wherein: the centering device (7) comprises an outer body (71) connected with the rotating shaft assembly (1), a ball head (73) and an elastic body (72) connected between the outer body (71) and the ball head (73), and a positioning groove (61) matched with the ball head (73) is formed in the middle limiting column (6).

9. An electronic steering mechanism according to claim 8, wherein: the elastic body (72) extends in the vertical direction, and the elastic body (72) comprises two spacers (721) extending in the horizontal direction and a spring (722) positioned between the two spacers (721).

10. An electronic steering mechanism according to claim 7, wherein: the outer body (71) is in threaded connection with the transverse connecting piece (12).

Technical Field

The invention relates to the field of automatic mechanical equipment, in particular to a structural design of an industrial vehicle steering control device.

Background

Industrial vehicles refer to power-driven motor vehicles used to carry, push, pull, lift, stack, or palletize various loads. Common industrial vehicles are forklifts, side-lifts, tractors, trucks, fork lifts, and the like.

Industrial vehicles require the use of a handle to modify the path of travel of the vehicle. For example, chinese patent publication No. CN201910257211.6 discloses a steering handle and a storage cart including the steering handle, wherein a user can correct the direction of the traveling route of the vehicle by operating the steering handle.

However, the technical scheme still has certain technical defects, on one hand, when the vehicle needs to turn at a large angle, the handle also needs to turn at the same angle, and the convenience of operation of a driver is influenced by the large-range angle change operation. On the other hand, the handle is not good in handling feeling when the handle is returned to the center, and stability of the vehicle when the vehicle travels straight is affected.

Disclosure of Invention

The invention aims to provide an electronic steering mechanism, which realizes differential steering, realizes that a vehicle can be steered more conveniently and enhances the return neutrality of the whole handle.

The technical purpose of the invention is realized by the following technical scheme: an electronic steering mechanism comprises a rotating shaft assembly and a steering seat, wherein a torsion spring is arranged on the steering seat and comprises two extension ends of the torsion spring; the rotating shaft assembly comprises push rods, the extending ends of the two torsion springs are located on two sides of the push rods, and the rotating shaft assembly is connected with a potentiometer.

Preferably, the rotating shaft assembly comprises a rotating shaft and a transverse connecting piece, the push rod is connected to the transverse connecting piece, and the potentiometer is connected to the lower end of the rotating shaft.

Preferably, the steering seat includes a main seat portion and an extending piece connected to the main seat portion, and the extending piece is provided with two side limiting columns for limiting the rotation stroke of the push rod.

Preferably, in the handle centering state, the distance between the two extending ends of the torsion spring in the horizontal direction is equal to the outer diameter of the push rod.

Preferably, the push rod comprises a bolt and an outer sleeve sleeved outside the bolt, the overhanging sheet is provided with an auxiliary limiting groove, and the length of the auxiliary limiting groove is smaller than the distance between the two side limiting columns.

Preferably, the extending sheet is provided with a middle limiting column, the middle limiting column is positioned in the middle of the two side limiting columns, and the extending ends of the two torsion springs abut against two sides of the middle limiting column in a centered state of the handle.

Preferably, the centering device is used for determining the relative position of the rotating shaft assembly in the horizontal direction relative to the winning support.

Preferably, the centering device comprises an outer body connected with the rotating shaft assembly, a ball head and an elastic body connected between the outer body and the ball head, and a positioning groove matched with the ball head is formed in the middle limiting column.

Preferably, the elastic body extends in a vertical direction, and the elastic body includes two spacers extending in a horizontal direction and a spring located between the two spacers.

Preferably, the outer body is screwed to the transverse connecting piece.

In conclusion, the invention has the following beneficial effects:

1. the controller can realize that the rotating angle of the rotating shaft assembly has a certain proportional relation with the actual rotating angle of the steering wheel, so that the rotating shaft can rotate in a proper angle range, and the steering wheel can rotate in any required angle range.

2. The control of reducing the speed of the vehicle during large-angle turning is realized by detecting the rotation angle of the potentiometer, so that the safety during steering is improved.

3. The push rod is driven by the rotating shaft to synchronously rotate, and the extending ends of the two torsional springs are arranged on the two sides of the push rod and abut against the two torsional springs to generate damping hand feeling.

4. The distance between the extending ends of the two torsion springs in the horizontal direction is just the outer diameter of the nylon outer sleeve, so that the situation that the operating handle or the steering wheel shakes left and right when the rotating shaft assembly is in the middle position is avoided.

5. The two side limiting columns limit the maximum rotating position of the push rod.

6. The centering device is arranged, so that an operator can feel vibration in the centering process, and the vibration can be adjusted through the installation depth of the centering device relative to the rotating shaft assembly.

Description of the drawings:

FIG. 1 is a schematic diagram of a first embodiment;

FIG. 2 is a schematic view of FIG. 1 with the steering seat hidden;

FIG. 3 is a schematic view of a fifth wheel;

figure 4 is a side cross-sectional view of the centering device.

In the figure:

1. the rotary shaft assembly comprises a rotary shaft assembly 11, a rotary shaft 12, a transverse connecting piece 13, a push rod 2, a torsion spring 21, a torsion spring extension end 3, a steering seat 31, a main seat part 32, an extension piece 33, an auxiliary limiting groove 34, a side limiting column 4, a potentiometer 5, a potentiometer connecting plate 6, a middle limiting column 61, a positioning groove 7, a centering device 71, an outer body 72, an elastic piece 721, a spacer 722, a spring 73 and a ball head.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.