JPH0664136U - Brake tester wheel pop-out prevention device - Google Patents

Abstract

(57) [Abstract] [Purpose] During the brake test, the wheels of the vehicle to be measured do not jump out from the measurement point and safety can be achieved. [Structure] In the front and rear rollers 3a and 3b on which the left and right wheels of the vehicle to be measured of the brake tester are respectively mounted,
The roller 3a on the front side of the traveling direction of the vehicle to be measured is formed so as to be able to move up and down, and the roller 3a on the front side is raised during the test so that the wheels of the vehicle to be measured move forward and backward.
It does not jump out from a and 3b.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a wheel pop-out prevention device for a brake tester used for inspection and maintenance of vehicles such as automobiles.

[0002]

[Prior art]

 Conventionally, in order to prevent the wheels of the vehicle to be measured from jumping out of the rollers of the brake tester while testing the brakes of the vehicle to be measured by the brake tester, the brake tester and the bottom of the vehicle to be measured are used. A method of providing a third roller that moves up and down so as to come into contact with the vehicle to prevent the vehicle from jumping out, or a method of separately fixing a vehicle by using a wheel stopper has been used.

[0003]

[Problems to be solved by the device]

 However, in the former method, a third roller must be newly provided, and the tip of the roller may damage the bottom of the vehicle to be measured. In the latter method, the wheel stopper is set for each measurement. There was a problem in that work had to be done again and the work efficiency was poor.

An object of the present invention is to solve these problems and to provide a wheel pop-out prevention device for a break tester that prevents the wheel pop-out by an easy means.

[0005]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention provides a brake tester in which the left and right wheels of a vehicle to be measured are placed before and after the left and right wheels of the vehicle, respectively, so that the front roller in the traveling direction of the vehicle can be moved up and down. Is characterized by.

[0006]

[Action]

 Enter the vehicle under test into the location of the brake tester, place its front or rear wheels on the front and rear rollers, and raise and lower the roller on the front side in the traveling direction of the vehicle under test. There is no sticking out of the wheels.

[0007]

【Example】

 An embodiment of the present invention will be described below with reference to FIGS.

Reference numeral 1 denotes a mounting plate, which is provided in a recess 2 formed on the floor surface, and front and rear rollers 3 a, 3 b are arranged on the left and right of the upper surface of the mounting plate 1. Of the rollers 3a and 3b, one roller 3a is formed as a driven roller that rotates freely, and the other roller 3b is a roller inside the housing 4 provided on the mounting plate 1. It is connected to the rotation drive mechanism and the braking force detection mechanism.

Then, the bottom portion of the hydraulic cylinder 6 is swingably attached to a locking tool 7 fixed on the bottom surface 5a of the recess 5 formed in the bottom surface 2a of the recess 2 on the floor, The tip of the expanding and contracting rod 6a was rotatably attached to the locking tool 1b fixed to the lower surface of the mounting plate 1, and the hydraulic cylinder 6 was formed in the lifting mechanism.

Reference numeral 9 denotes an intermediate lift for placing the left and right wheels of the vehicle to be measured at predetermined positions as the rod 8 of the hydraulic cylinder extends, and 10 denotes the object to be measured of the mounting plate 1 described above. 1 shows a locking tool for rotatably locking a protruding pin 11 pivotally attached to a rear end of a vehicle in a traveling direction to a bottom surface 2a of the recess 2.

Next, the operation of the wheel pop-out prevention device for the brake tester of the above embodiment will be described.

With the intermediate lift 9 raised, the vehicle to be measured enters the brake tester in the direction of the arrow in FIG. 1, and the front wheels A, A of the vehicle to be measured are placed on the mounting plate in the recess 2 on the floor. The intermediate lift 9 is lowered by placing the rollers 3a and 3b directly above the roller 1. Next, the operator raises the mounting plate 1 by the hydraulic cylinder 6 via the rod 6a with the rear end in the traveling direction of the vehicle to be measured as the rotation axis, and as shown in FIG. Hold and fix.

Then, when the motor is operated to rotate the drive roller 3b in the counterclockwise direction, the front wheel A of the vehicle to be measured rotates in the clockwise direction, and the driven roller 3a rotates in the counterclockwise direction.

Next, when the operator brakes the vehicle to be measured to measure the braking force, the position of the driven roller 3a is high and the front wheel A jumps to the outside because the driven roller 3a is rotating counterclockwise. I don't. After measuring the braking force of the vehicle to be measured, the mounting plate 1 is returned to the initial state, the intermediate lift 9 is raised to move the vehicle to be measured forward, and then the rear wheels of both vehicles to be measured. For the above, the braking force is measured by the same procedure, and a series of work is completed.

Although the lifting mechanism for the mounting plate 1 is constituted by the hydraulic cylinder 6 in the above-described embodiment, the invention is not limited to this, and any other means can be used as long as one end of the mounting plate 1 can be moved up and down. A shift mechanism may be used.

[0016]

[Effect of device]

 As described above, according to the present invention, when measuring the braking force of the front and rear wheels of the vehicle to be measured, the front and rear rollers of the roller on which the wheel is placed can be moved up and down. As a result, the wheels of the vehicle under test do not jump out of the measurement area, ensuring safety and having a simple structure.

[Brief description of drawings]

FIG. 1 is a plan view of an embodiment of the present invention.

FIG. 2 is a front view of an embodiment of the present invention.

FIG. 3 is a sectional view taken along the line III-III in FIG.

FIG. 4 is a sectional view of a main part.

[Explanation of symbols]

 1 Mounting plate 3a, 3b Roller 6 Lifting mechanism

Claims (3)

[Scope of utility model registration request] 1. A brake tester, characterized in that front and rear rollers of a brake tester on which left and right wheels of a vehicle to be measured are respectively placed so that a roller on a front side in a traveling direction of the vehicle to be measured can be raised and lowered. Wheel pop-out prevention device. 2. A mounting plate pivotally supporting the front and rear rollers on the upper surface is rotatably pivoted at an end portion on the rear side in the traveling direction, and an elevating mechanism is mounted on a lower surface on the front side in the traveling direction. The wheel pop-out prevention device for the brake tester according to claim 1, further comprising: 3. The wheel pop-out prevention device for a brake tester according to claim 2, wherein the lifting mechanism comprises a hydraulic cylinder.