A steering direction machine for a large power platform vehicle and the power platform vehicle

Abstract

The utility model discloses a steering direction machine for large -scale power flat car, include: direction machine shell, direction machine shell fixed mounting is in the cab operation panel frame, steering upright, steering upright is supported in the bearing seat with direction machine shell fixed link through bearing, and the upper end portion of on is equipped with the steering wheel, clutch, the lower extreme fixed connection of steering upright is connected with the upper half of clutch, multi -turn steering sensor, the central shaft of multi -turn steering sensor's connection is connected with the lower half of clutch, vehicle -mounted controller, vehicle -mounted controller receives the steering angle signal of multi -turn steering sensor, proportional valve and steering cylinder, set up respectively by every steering wheel group, and vehicle -mounted controller controls, realizes the steering angle control to steering wheel group. The utility model discloses adopts electro -hydraulic steering system, and the steering angle signal of sensor generates is given vehicle -mounted computer controller, and the controller controls the proportional valve and steering cylinder of every steering wheel group to realize accurate steering angle control.

Description

Technical Field

[0001] This utility model relates to the field of mechanical steering technology, and in particular to a steering mechanism for a large power flatbed truck and the power flatbed truck itself. Background Technology

[0002] Large hydraulically powered flatbed trucks and other heavy-duty transport platforms are commonly used in shipyards to transport ship sections weighing hundreds of tons. These large hydraulically powered flatbed trucks consist of many steering wheel sets, and the steering of these wheel sets is operated and controlled by a steering mechanism in the cab.

[0003] Traditional vehicle steering systems typically use a steering wheel via a linkage mechanism to drive a set of steering wheels for steering, with a hydraulic or electric power assist device connected in parallel to reduce the driver's workload. However, large hydraulically powered flatbed trucks have a particularly large number of steering wheels and a very high steering torque, so this traditional steering system cannot meet the steering operation and control requirements of such large vehicles. Summary of the Invention

[0004] Purpose of the utility model: In order to overcome the shortcomings of the prior art, the first purpose of this utility model is to provide a steering mechanism for large power flatbed trucks; The second objective is to provide a powered flatbed vehicle employing the aforementioned steering mechanism.

[0005] Technical solution: The steering mechanism for large power flatbed trucks provided by this utility model includes: Steering gear housing, which is fixedly mounted on the cab control panel frame; The steering column is supported by bearings in a bearing housing that is fixedly connected to the steering gear housing, and a steering wheel is mounted on its upper end. The clutch, wherein the lower end of the steering column is fixedly connected to the upper half of the clutch; A multi-turn steering sensor, wherein the central shaft of the multi-turn steering sensor is connected to the lower half of the clutch; The vehicle controller receives steering angle signals from a multi-turn steering sensor; Proportional valves and steering cylinders are installed separately for each steering wheel assembly and controlled by the on-board controller to achieve steering angle control of the steering wheel assembly.

[0006] Furthermore, it also includes a torque damper, which is fixed to the steering gear housing; the column of the steering column is installed in the inner hole of the torque damper.

[0007] Furthermore, a rotation limit device is provided between the clutch and the multi-turn steering sensor.

[0008] Furthermore, the rotation limiting device is fixed to the torque damper by a bracket, and the limiting screw of the rotation limiting device is connected to the bracket by bearings at both ends. The upper end of the limiting screw is connected to the clutch, and the lower end is connected to the central shaft of the multi-turn steering sensor.

[0009] Furthermore, the housing of the multi-turn steering sensor is fixedly connected to the bracket of the rotation limiting device.

[0010] Correspondingly, a powered flatbed vehicle is also provided, including the aforementioned steering mechanism for large powered flatbed vehicles.

[0011] Beneficial effects: Compared with the prior art, the advantages of this utility model are: 1. An electro-hydraulic steering system is adopted, in which the steering wheel drives an electronic steering sensor. The steering angle signal generated by the sensor is transmitted to the on-board computer controller, which then controls the proportional valve and steering cylinder of each steering wheel group to achieve precise steering angle control. 2. A damper is provided. The damper will simulate the steering resistance torque of the vehicle's wheelset and feed it back to the steering wheel. Because the steering of the vehicle's wheelset will lag behind the steering operation of the steering gear, the damper will set the steering wheel's resistance torque proportionally according to the difference between the steering wheel angle and the actual wheel angle, so that the driver can have the actual road feel of steering operation. 3. Equipped with a clutch, which is disengaged when the vehicle is not in operation. This prevents the steering sensor at the bottom of the steering gear from being damaged by someone turning the steering wheel at will, or the wheel assembly from suddenly turning when the vehicle is started. 4. A rotation limit device is installed to protect the fragile electronic steering sensor at the end of the steering gear from damage due to overtravel. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model. Detailed Implementation

[0013] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0014] like Figure 1 The steering gear shown for a large powered flatbed truck includes: Steering gear housing 1 is fixedly installed on the cab control panel frame for overall fixation.

[0015] The steering column 2 is supported by a bearing in a bearing housing that is fixedly connected to the steering gear housing 1. A steering wheel 3 is installed at its upper end, and the steering column 2 is rotated by the steering wheel 3.

[0016] The upper half of the clutch 4 is fixedly connected to the lower end of the steering column 2.

[0017] Torque damper 6 is fixed to steering gear housing 1, and the column of steering column 2 is installed in the inner hole of torque damper 6. The damper simulates the steering resistance torque of the vehicle wheel set and feeds it back to the steering wheel. It sets the steering wheel resistance torque proportionally according to the difference between the steering wheel angle and the actual wheel set angle, so that the driver can have the actual road feel of steering operation.

[0018] Multi-turn steering sensor 5, the central shaft of multi-turn steering sensor 5 is connected to the lower half of clutch 4.

[0019] A rotation limit device 7 is provided between the clutch 4 and the multi-turn steering sensor 5. The rotation limit device 7 is fixed to the torque damper 6 by a bracket. The limit screw of the rotation limit device 7 is connected to the bracket by bearings at both ends. The upper end of the limit screw is connected to the clutch 4, and the lower end is connected to the central shaft of the multi-turn steering sensor 5. The housing of the multi-turn steering sensor 5 is fixedly connected to the bracket of the rotation limit device 7.

[0020] The vehicle-mounted controller receives steering angle signals from the multi-turn steering sensor 5. Proportional valves and steering cylinders are separately installed in each steering wheel assembly and controlled by the vehicle-mounted controller. The steering wheel drives the multi-turn steering sensor, and the steering angle signals generated by the sensor are transmitted to the vehicle-mounted controller. The controller then controls the proportional valves and steering cylinders of each steering wheel assembly to achieve precise steering angle control.

Claims

1. A steering mechanism for a large power flatbed truck, characterized in that, include: Steering gear housing (1), the steering gear housing (1) is fixedly installed on the cab control panel frame; Steering column (2), the steering column (2) is supported by bearings in a bearing seat fixedly connected to the steering gear housing (1), and a steering wheel (3) is installed at its upper end. The clutch (4) is fixedly connected to the upper half of the steering column (2) at its lower end; A multi-turn steering sensor (5) has its central shaft connected to the lower half of the clutch (4); The vehicle controller receives the steering angle signal from the multi-turn steering sensor (5); Proportional valves and steering cylinders are installed separately for each steering wheel assembly and controlled by the on-board controller to achieve steering angle control of the steering wheel assembly.

2. The steering gear for a large power flatbed truck according to claim 1, characterized in that: It also includes a torque damper (6), which is fixed to the steering gear housing (1); the column of the steering column (2) is installed in the inner hole of the torque damper (6).

3. The steering gear for a large power flatbed truck according to claim 1, characterized in that: A rotation limit device (7) is provided between the clutch (4) and the multi-turn steering sensor (5).

4. The steering gear for a large power flatbed truck according to claim 3, characterized in that: The rotation limiting device (7) is fixed to the torque damper (6) by the bracket. The limiting screw of the rotation limiting device (7) is connected to the bracket by bearings at both ends. The upper end of the limiting screw is connected to the clutch (4), and the lower end is connected to the central shaft of the multi-turn steering sensor (5).

5. The steering gear for a large power flatbed truck according to claim 4, characterized in that: The housing of the multi-turn steering sensor (5) is fixedly connected to the bracket of the rotation limiting device (7).

6. A powered flatbed vehicle, characterized in that, Includes the steering mechanism for a large power flatbed truck as described in any one of claims 1-5.

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