Steering system of logistics industrial vehicle

Abstract

The utility model relates to the technical field of industrial vehicles, and particularly discloses a steering system of a logistics industrial vehicle, which comprises a steering handle, a positioning seat, a steering shaft, a steering plate, a connecting plate, a sensor and a driving wheel with a driving motor, the steering handle and the steering plate are fixedly connected with the upper end and the lower end of the steering shaft respectively, the two ends of the connecting plate are connected with the steering plate and the driving wheel respectively, the sensor is fixed to the positioning seat, one end of the sensor is located on one side of the steering plate, and the steering plate rotates by a first preset angle clockwise or anticlockwise. The first speed limiting part or the second speed limiting part on the steering plate can be in contact with the sensor, the sensor can send a signal to the driving motor of the driving wheel, the rotating speed of the driving wheel can be limited by controlling the driving motor, the purpose of reducing the running speed is achieved, the running speed in the vehicle steering process is reduced, and the safety performance is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of logistics industrial vehicles, in particular to a steering system of a logistics industrial vehicle. Background Art

[0002] With the rapid development of the logistics industry, the requirements for logistics transportation vehicles are constantly increasing. As an indispensable part of the modern logistics system, logistics industrial vehicles play a vital role in operations such as cargo handling and stacking. However, traditional logistics industrial vehicle steering systems have many shortcomings, such as poor safety during steering. These issues have, to a certain extent, limited the improvement of logistics efficiency and the assurance of safety.

[0003] Traditional steering systems usually use mechanical steering, that is, the driver manually operates the steering handle to change the vehicle's direction of travel. Due to the lack of an effective speed control mechanism, the vehicle's speed is difficult to accurately adjust during the steering process, further increasing the difficulty of operation and safety hazards. Summary of the Invention

[0004] The present invention is made in consideration of the above-mentioned problems. The purpose of the utility model is to provide a steering system for logistics industrial vehicles, which can limit the driving wheels during the steering process to avoid excessive speed, reduce operational difficulty and safety hazards.

[0005] To achieve the above-mentioned object, the present invention provides a steering system for a logistics industrial vehicle, comprising a steering handle, a positioning seat, a steering shaft, a steering plate, a connecting plate, and a drive wheel with a drive motor, wherein the steering shaft is rotatably mounted on the positioning seat, the steering handle and the steering plate are fixedly connected to the upper and lower ends of the steering shaft, respectively, the ends of the connecting plate are respectively connected to the steering plate and the drive wheel, and further comprising a sensor fixed to the positioning seat, wherein the sensor is electrically connected to the drive motor;

[0006] The lower end of the sensor is located at the bottom of the positioning seat and on one side of the steering plate. The steering plate is provided with a first speed limiting portion and a second speed limiting portion distributed at intervals. When the steering plate rotates clockwise or counterclockwise by a first preset angle, the first speed limiting portion or the second speed limiting portion can contact the sensor and limit the rotational speed of the driving wheel through the driving motor.

[0007] According to the steering system of a logistics industrial vehicle described above, an avoidance area is provided between the first speed limiter and the second speed limiter. When the driving wheel is in a straight-ahead state, the sensor is located within the avoidance area and can be disengaged from the first speed limiter and the second speed limiter.

[0008] According to the above-mentioned steering system of a logistics industrial vehicle, the first speed limiting part and the second speed limiting part are both configured as arc-shaped protrusions protruding from one side of the steering plate, and the arc-shaped protrusions are provided with an arc-shaped abutting surface, which can abut against the sensor.

[0009] According to the steering system of a logistics industrial vehicle described above, the steering handle includes a handle rudder, a handle rod and a handle seat. The handle rudder is fixed to the upper end of the handle rod, the lower end of the handle rod is welded to the handle seat, and the handle seat is arranged on the outside of the upper end of the steering shaft and connected to the steering shaft.

[0010] According to the steering system of a logistics industrial vehicle described above, a mounting hole is provided on the handle seat, one end of the steering shaft is located in the mounting hole, and the inner wall of the mounting hole is connected to the outer wall of the steering shaft through a flat key.

[0011] According to the above-mentioned steering system of a logistics industrial vehicle, it also includes a mounting seat and a swivel seat. The swivel seat is rotatably mounted below the mounting seat, the driving wheel is fixed to the bottom of the swivel seat, and one end of the connecting plate is connected to the swivel seat.

[0012] According to the above-mentioned steering system for a logistics industrial vehicle, both ends of the connecting plate are detachably connected to the steering plate and the slewing seat by bolts.

[0013] The utility model has the following beneficial effects: in the process of steering the driving wheel by controlling the steering handle, it will drive the steering plate to perform synchronous steering action, and after the steering plate rotates clockwise or counterclockwise by a first preset angle, the first speed limiting part or the second speed limiting part on the steering plate can contact the sensor, and the sensor can send a signal to the driving motor of the driving wheel. By controlling the driving motor, the rotation speed of the driving wheel can be limited, thereby achieving the purpose of reducing the driving speed, achieving a lower driving speed during the turning process, giving sufficient operation reaction time, reducing the difficulty of operation, and also preventing people from being thrown out, thereby improving safety performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a cross-sectional view of the overall structure of the embodiment;

[0015] Figure 2 Schematic diagram of the assembly of the steering plate and the sensor in the embodiment.

[0016] In the picture:

[0017] 100, steering handle; 110, handle rudder; 120, handle rod; 130, handle seat; 131, flat key; 200, positioning seat; 300, steering shaft; 400, steering plate; 410, first speed limiter; 420, second speed limiter; 500, connecting plate; 600, driving wheel; 700, mounting seat; 800, swivel seat; 900, sensor. DETAILED DESCRIPTION

[0018] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0019] like Figure 1-2 As shown, a steering system of a logistics industrial vehicle includes a steering handle 100, a positioning seat 200, a steering shaft 300, a steering plate 400, a connecting plate 500 and a driving wheel 600 with a driving motor. The steering handle 100 drives the driving wheel 600 to steer through the steering shaft 300, the steering plate 400 and the connecting plate 500.

[0020] Among them, the steering shaft 300 is rotatably installed on the positioning seat 200, the steering handle 100 and the steering plate 400 are fixed to the upper and lower ends of the steering shaft 300 respectively, and the two ends of the connecting plate 500 are respectively connected to the steering plate 400 and the driving wheel 600. When the steering handle 100 rotates, it will drive the steering shaft 300 to rotate, and the steering plate 400 will be driven to rotate synchronously through the steering shaft 300, and then the driving wheel 600 will be driven to steer through the connecting plate 500.

[0021] In order to improve the safety performance of the logistics industrial vehicle during the steering process, it also includes a sensor 900 fixed on the positioning seat 200. The sensor 900 is connected to the drive motor electrical signal, which can control the rotation speed of the drive wheel 600 through the drive motor, and thus control the driving speed of the logistics industrial vehicle. Specifically, the lower end of the sensor 900 is located at the bottom of the positioning seat 200 and on one side of the steering plate 400. The steering plate 400 is provided with a first speed limiting portion 410 and a second speed limiting portion 420 distributed at intervals. In the initial state, that is, when the vehicle and the drive wheel 600 are in a straight state, the sensor 900 is located between the first speed limiting portion 410 and the second speed limiting portion 420. At this time, the sensor 900 and the first speed limiting portion 410 and the second speed limiting portion 420 are all in a separated state. At this time, the speed of the drive wheel 600 is The speed can be faster, for example, it rotates at a speed with the fastest speed being the first speed. When the steering plate 400 rotates clockwise by a first preset angle, its first speed limiting portion 410 can contact the sensor 900. When the steering plate 400 rotates counterclockwise by a first preset angle, its second speed limiting portion 420 can contact the sensor 900. Once the first speed limiting portion 410 or the second speed limiting portion 420 contacts the sensor 900, the sensor 900 can sense the rotation angle of the steering plate 400, and it will send an instruction to the drive motor of the drive wheel 600 to reduce the speed of the drive wheel 600 and limit it to rotate at a speed with the fastest speed being the second speed. Among them, the first speed is faster than the second speed, so as to achieve speed limit of the drive wheel 600 during steering, and avoid safety accidents such as rollover and operator being thrown out due to high speed during steering.

[0022] The first rotation speed of the driving wheel 600 in the straight-moving state is 12 km / h, and the second rotation speed of the driving wheel 600 in the turning state is 5 km / h. The driving speed of the vehicle is consistent with the rotation speed of the driving wheel 600.

[0023] Specifically, an avoidance area is provided between the first speed limiter 410 and the second speed limiter 420. When the driving wheel 600 is in a straight-ahead state, the sensor 900 is located in the avoidance area and can be disengaged from the first speed limiter and the second speed limiter. Of course, when the steering angle of the driving wheel 600 is small, the sensor 900 will not contact the first speed limiter 410 and the second speed limiter 420, and the vehicle can maintain normal speed.

[0024] Specifically, the first limiting portion and the second limiting portion are both configured as arc-shaped protrusions protruding from one side of the steering plate 400, and an arc-shaped abutting surface is provided on the arc-shaped protrusion. When the first speed limiting portion 410 or the second speed limiting portion 420 is connected to the sensor 900, they are abutted against the sensor 900 through the arc-shaped abutting surface. If the rotation continues in the original direction, the arc-shaped abutting surface will always remain in abutment with the sensor 900, and the vehicle will always be in a low-speed state.

[0025] Specifically, the steering handle 100 includes a handle rudder 110, a handle rod 120 and a handle seat 130. The handle rudder 110 is fixed to the upper end of the handle rod 120, and the lower end of the handle rod 120 is welded to the handle seat 130. The handle seat 130 is sleeved on the outer side of the upper end of the steering shaft 300 and is connected to the steering shaft 300. The handle rudder 110 drives the handle rod 120 to rotate, and drives the handle seat 130 to rotate through the handle rod 120, and then drives the steering shaft 300 to rotate through the handle seat 130.

[0026] In order to ensure that the handle seat 130 can smoothly drive the steering shaft 300 to rotate, a mounting hole is provided on the handle seat 130. One end of the steering shaft 300 is located in the mounting hole, and the inner wall of the mounting hole is connected to the outer wall of the steering shaft 300 through a flat key 131. The flat key 131 can be used to drive the steering shaft 300 to rotate together. The handle seat 130 can be dismantled by simply removing the flat key 131, thereby realizing a detachable connection between the handle seat 130 and the rotating shaft.

[0027] In order to realize the installation and steering of the driving wheel 600, a mounting seat 700 and a swivel seat 800 are also included. The swivel seat 800 is rotatably installed below the mounting seat 700, and the driving wheel 600 is fixed to the bottom of the swivel seat 800. One end of the connecting plate 500 is connected to the swivel seat 800. When the steering plate 400 drives the connecting plate 500 to rotate, the connecting plate 500 can drive the swivel seat 800 to rotate, and then drive the driving wheel 600 to steer through the swivel seat 800.

[0028] In order to facilitate overall disassembly and maintenance, both ends of the connecting plate 500 are detachably connected to the steering plate 400 and the swivel seat 800 by bolts. When disassembly is required, it can be achieved by removing the bolts, which is conducive to maintenance.

[0029] The technical solution of the present invention has been described in detail above with reference to the accompanying drawings, and the embodiments described are intended to help understand the concept of the present invention. The specific embodiments described herein are merely illustrative of the spirit of the present invention. Those skilled in the art of the present invention may make various modifications or additions to the described specific embodiments, or adopt similar methods to replace them, without departing from the spirit of the present invention or exceeding the scope defined by the appended claims.

[0030] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0031] In addition, terms such as "first," "second," and "an" in this utility model are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features indicated. Therefore, features specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0032] In this utility model, unless otherwise specified or limited, the terms "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can mean fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0033] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in this field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by this utility model.

Claims

1. A steering system for a logistics industrial vehicle, comprising a steering handle, a positioning seat, a steering shaft, a steering plate, a connecting plate, and a drive wheel with a drive motor, wherein the steering shaft is rotatably mounted on the positioning seat, the steering handle and the steering plate are fixedly connected to the upper and lower ends of the steering shaft, respectively, and the ends of the connecting plate are respectively connected to the steering plate and the drive wheel, characterized in that: It also includes a sensor fixed on the positioning seat, and the sensor is connected to the driving motor by electrical signal; The lower end of the sensor is located at the bottom of the positioning seat and on one side of the steering plate. The steering plate is provided with a first speed limiting portion and a second speed limiting portion distributed at intervals. When the steering plate rotates clockwise or counterclockwise by a first preset angle, the first speed limiting portion or the second speed limiting portion can contact the sensor and limit the rotational speed of the driving wheel through the driving motor.

2. The steering system of a logistics industrial vehicle according to claim 1, characterized in that: An avoidance area is provided between the first speed limiter and the second speed limiter. When the driving wheel is in a straight-ahead state, the sensor is located within the avoidance area and can be separated from the first speed limiter and the second speed limiter.

3. A steering system for a logistics industrial vehicle according to claim 1 or 2, characterized in that: The first speed limiting portion and the second speed limiting portion are both configured as arc-shaped protrusions protruding from one side of the steering plate. An arc-shaped abutting surface is provided on the arc-shaped protrusion, and the arc-shaped abutting surface can abut against the sensor.

4. The steering system for a logistics industrial vehicle according to claim 1, characterized in that: The steering handle includes a handle rudder, a handle rod and a handle seat. The handle rudder is fixed to the upper end of the handle rod, the lower end of the handle rod is welded to the handle seat, and the handle seat is sleeved on the outside of the upper end of the steering shaft and connected to the steering shaft.

5. The steering system of a logistics industrial vehicle according to claim 4, characterized in that: A mounting hole is provided on the handle seat, one end of the steering shaft is located in the mounting hole, and the inner wall of the mounting hole is connected to the outer wall of the steering shaft through a flat key.

6. The steering system of a logistics industrial vehicle according to claim 1, characterized in that: It also includes a mounting seat and a swivel seat. The swivel seat is rotatably mounted below the mounting seat. The driving wheel is fixed to the bottom of the swivel seat. One end of the connecting plate is connected to the swivel seat.

7. The steering system of a logistics industrial vehicle according to claim 6, characterized in that: Both ends of the connecting plate are detachably connected to the steering plate and the swivel seat by bolts.

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