JPS63215938A - Vehicle inspection method and apparatus for four-wheel drive vehicle and front wheel drive vehicle - Google Patents

Abstract

PURPOSE:To inspect a number of four-wheel drive vehicles with various wheel bases while enabling inexpensive manufacture with a simple mechanism, by arranging a free wheel rotation supporting device with a number of free rollers arranged in parallel to make a vehicle travel along the upper end of teeth of a comb-shaped plate device capable of vertical movement thereof as required. CONSTITUTION:A free wheel rotation supporting device provided before and after a speed meter tester and a brake tester is equipped with a number of free rollers 1 arranged in parallel, a comb-shaped plate device 2 in section with teeth 2a movable forward or backward between the rollers 1 and a cylinder 3 for lifting thereof. The use of the free wheel rotation supporting device with larger dimensions employing the rollers 1 enables the inspection of a number of four-wheel drive vehicles or the like with various wheel base. Only when a vehicle gets on or off the rollers 1 and when the apparatus is not used, the device 2 rises to permit the travelling of the vehicle along the upper end of the teeth 2a thereby enabling implementation of inspection easily at a low cost.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a vehicle inspection method and apparatus for four-wheel drive vehicles and front-wheel drive vehicles.

With the recent rapid development of full-time four-wheel drive vehicles, front-wheel drive vehicles, etc., there is a need for inspection methods and devices for special vehicles in which these front wheels and rear wheels are connected to a drive shaft. In these vehicles, for example, the front wheels are equipped with a speedometer tester,
If you try to test the brake while rotating with a brake tester, the rear wheels will rotate and the vehicle will advance (see Figure 3 (A)), so in order to stop the vehicle from advancing, the rear wheels must rotate freely on the free rollers. (See Figure 3 (B)) On the other hand, when a vehicle gets onto or escapes from the free rollers, it is difficult to move on the free rollers, so some kind of device is needed to make the movement easier. be.

2. Description of the Related Art Conventionally, the method shown in FIG. 4 has been put to practical use in order to solve similar problems in vehicle inspections of, for example, rear-wheeled two-wheeled vehicles. In this method, a brake shoe is used to control the rotation of the free roller, and the brake shoe is raised and lowered by an air cylinder to facilitate the movement of the vehicle.

Problems to be Solved by the Invention The above-mentioned prior art cannot be implemented when the distance between the wheel axles of the wheel on the side to be inspected and the wheel on the other side is relatively short and approximately constant, such as in a rear-wheel motorcycle. However, in full-time four-wheel drive vehicles and front-wheel drive vehicles with various wheelbases, long wheels consisting of a large number of free rollers are used to accommodate changes in the dimensions between the front and rear axles. A rotation support device is required, and it is difficult to control the rotation of this large number of free rollers using brake shoes. Therefore, there is a need for a method for facilitating boarding and egress in a wheel free-rotation support device consisting of a large number of free rollers.

Means for Solving the Problems The vehicle inspection method and apparatus for four-wheel drive vehicles and front-wheel drive vehicles of the present invention has the following configuration as means for solving the above problems. That is, a wheel free rotation support device is provided with a large number of free rollers arranged in parallel before and after the speedometer tester and brake tester, and the wheel free rotation support device includes a cross-sectional comb whose teeth can move back and forth between the free rollers. A comb-shaped flat plate device and a cylinder for raising and lowering the plate device are provided, and the comb-shaped flat plate device rises only when riding on or escaping from the free roller and when not in use, and moves along the upper edge of its teeth. This means that the vehicle can move forward.

According to the present invention, since a long wheel free rotation support device is provided in which a large number of free rollers are arranged in parallel, inspections can be performed on four-wheel drive vehicles and the like having various wheel bases without any hindrance. Furthermore, instead of controlling the rotation of a large number of free rollers using brake shoes, a device that allows a comb-shaped flat plate device to rise and advance along the upper edge of its teeth as needed, and a cylinder for raising and lowering the device are simply provided. It is extremely easy to implement and can be implemented at low cost.

Example FIG. 1 shows one example of implementing the present invention.

(A) is a sectional view of the wheel free rotation support device when the vehicle is running or not in use, and (B) is a sectional view of the wheel free rotation support device when the vehicle is inspected. It will be done.

Reference numeral 2 denotes a flat plate device having a comb-like cross section, and its teeth 2a are provided so as to be able to move forward and backward into each gap between the free rollers 1, and are raised and lowered by a cylinder 3. 4 is a wheel. (A) shows the state in which the flat plate device 2 is lifted up by the cylinder 3, and (
As shown in the enlarged view of C), since the wheels 4 are in contact with the upper ends of the comb teeth 2a, the vehicle can move even if the free rollers l rotate. In (B), the flat plate device 2 is lowered by the cylinder 3, and the wheels 4 can freely rotate.

2(A) and 2(B) are a plan view and a side sectional view showing one example of a vehicle inspection device to which the present invention is applied, where A is a side slip tester, Fl and F2 are a first . The second wheel free rotation support device, B is a brake tester, and S is a speedometer tester. During a vehicle inspection, the vehicle to be inspected approaches from the left side of the diagram, tests for side slip at A, then passes over the first wheel free rotation support device F1, and the front wheels are inspected by a brake tester at B. The rear wheel rotates freely on the free roller 1 of Fl while being
Freely rotate in the same way as above.

F2 is a second wheel free rotation support device for testing brake drag, and when the rear wheel is on the brake tester B, the front wheel freely rotates on the free roller l of F2.

Effects of the Invention (1) Since the present invention has a long wheel free rotation support device in which a large number of free rollers are arranged in parallel, a large number of four-wheel drive vehicles and front wheel drive vehicles having various wheel bases can be inspected without support.

(2) The mechanism is simple and can be manufactured at low cost since the rotation of the free roller is not controlled, but a flat plate device having a comb-shaped cross section between which teeth advance and retreat is simply raised and lowered.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view showing one example of implementing the present invention, (A), (
B) is in a different state of use, and (C) is a partially enlarged view of (A). FIGS. 2(A) and (B) are a plan view and a side view showing an example of a vehicle inspection device to which the present invention is applied, and FIGS. 3(A) and (B) are comparative illustrations of vehicle inspection conditions. The explanatory side view and FIG. 4 are cross-sectional views showing a conventional example. The symbols in the drawings indicate the following members, respectively. 1: Free roller 2: Flat plate device 2a: Teeth 3 Niji cylinder 4: Wheel A: Side sleep tester B Brake tester S Speed meter tester Fl, F2
: 1st. Second wheel free rotation support device Patent applicant: Anzen Jidosha Co., Ltd., 11' Agent: Mr. Kobashi, Mr. Goryo 1 Figure (A) (C) (S) 4 Figure 3 (A) ( B)

Claims (1)

[Claims] 1. When inspecting a vehicle in which the front wheels and rear wheels are connected to the drive shaft, such as a full-time four-wheel drive vehicle or a front-wheel drive vehicle, the speedometer and brake are inspected while rotating the wheel on the side to be inspected. During these tests, the wheels on the other side rest on the free rollers so that they can rotate freely, and when getting on or getting out of the free rollers, the wheels on the other side are placed between the free rollers. 4 characterized in that the plate-like piece is made to protrude and advance along the upper end of the plate-like piece.
Vehicle inspection method for wheel drive vehicles and front wheel drive vehicles. 2. A wheel free rotation support device in which a large number of free rollers are installed in parallel is provided before and after the speedometer tester and brake tester, and the wheel free rotation support device has a cross section that allows teeth to move back and forth between the free rollers. A comb-shaped flat plate device and a cylinder for raising and lowering the plate device are provided, and the comb-shaped flat plate device rises only when getting on or escaping from the free roller and when not in use, and moves along the upper edge of its teeth. A vehicle inspection device for a four-wheel drive vehicle or a front-wheel drive vehicle, characterized in that the vehicle is able to move forward.