JPS5935791Y2 - Vehicle brake tester - Google Patents

Description

[Detailed description of the invention] The present invention relates to the structure of a vehicle brake tester, in which a tread brake device and a disc brake device including test brake shoes are attached to a swinging frame for measuring braking force. The purpose is to provide a brake testing machine.

Generally, this type of vehicle brake testing machine is mounted on two swinging stands, respectively.

An example of the structure of such a conventional vehicle brake tester is shown in the first example.
As shown in the figure.

FIG. 1 is a sectional plan view of a main part showing the configuration of a conventional vehicle brake testing machine for measuring the braking force of a tread brake and a disc brake.

In FIG. 1, 1 is the main shaft of the testing machine, and 2 is a flywheel that is fitted and fixed to the main shaft 1.

3 and 3' are main shaft bearings that support the main shaft 1, and 4.4' is a bearing stand.

5, 5' and 5a, 5a' are swing mount bearings that support the swing mounts 6 and 6', respectively, which are configured to be rotatable.

7, 7' are tread brake devices, and swing frame bearings 5, 5'
As shown in the figure, it is attached to a swing frame 6 at an intermediate position between the two.

8 is a test brake shoe, 9 is a test wheel, and 10 is a disc brake device mounted on a rocking frame C as shown in the figure.

11 is a test brake shoe, 12 is a test disc plate, 13
indicates wheels.

As shown in FIG. 1, the swing frame 6 has a tread brake device 1. A disc brake device 10 is disposed on the other swinging frame C, and one set of brake devices is mounted on one swinging frame.

Conventional vehicle brake testing machines that measure the braking force of both tread brakes and disc brakes have a pedestal structure in which each brake device is provided with a swinging pedestal.

In view of the above-mentioned points, the present invention is intended to rationalize the structure of the pedestal by attaching two sets of brake devices to one swing pedestal.The present invention will be explained below based on an embodiment.

Figure 2 is a cross-sectional plan view of main parts showing one embodiment of the present invention.
The figure is its front view.

In the figure, the same reference numerals as in FIG. 1 indicate the same or the same equivalent parts.

In FIGS. 2 and 3, 68 is the arm of the swing frame 6, 10a and 10'a are the levers of the disc brake device 10, and 10b, 10'b and 10c and 10'c are the pins of the disc brake device 10. show.

14 is a brake measuring load cell that detects the rotational force of the swing frame 60 when the brake is applied, and 15 is a base plate.

As shown in the figure, a tread brake device 7.7' with a test brake shoe 8 attached inside the gantry at a position intermediate between the oscillating mount bearings 5 and 5' is mounted on the oscillating mount 6, and the disc brake device 1
0 is on the outside of the shaft end side of the main shaft 1, lever 10a for disc brake, the center part of 10''a is pin 10b, 10
'b is supported by the arm 6a of the swing frame 6, and one end of the test brake shoe 11 is connected to the pin 10c.

10'c for rotation.

Although the button tread brake device is shown as an example in which the button is pressed on both sides, it may be operated on one side.

In the above-mentioned vehicle brake tester, the pushing force of the railway vehicle tread brake brake shoe 8 on the tread surface of the wheel 9 is usually a maximum of 6 TON, and the pushing force of the disc brake brake shoe 11 on the disc plate 12 is a maximum of 4 TOH. Since the load acting on the main shaft 1 due to the braking force is much smaller with the tread brake9, it is possible to install the tread brake device inside the pedestal at an intermediate position between the two oscillating mount axes +5 t 5' of the oscillating mount 6. Appropriate.

Furthermore, the bending stress generated at the shaft end of the cantilevered main shaft 1 due to the braking force of the disc brake device 10 is not very large, and there is no need to particularly increase the diameter of the cantilevered portion of the shaft end of the main shaft 1.

In other words, the most rational arrangement of the brake test tank is to have a tread brake device mounted on the stand midway between both support bearings of one swing frame, and a disc brake device mounted on the outside of the stand at the end of the main shaft. be.

As explained above, according to the present invention, the structure is arranged in the most rational and simple manner, and even if the button is replaced with the disk plate 12, which is subject to relatively high wear, the replacement becomes easy. have an effect.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing an example of a conventional vehicle brake testing machine. FIG. 2 is a plan view showing an embodiment of the present invention, and FIG. 3 is a front view thereof. 1... Main shaft, 2... Flywheel, 3.3'...
Main shaft bearing, 4, 4'...bearing stand, 5, 5', 5a, 5
'a... Swinging frame bearing, 6,6' Swinging stand, 7,7'...
...Tread brake device, 8, 11...Test brake shoe, 9
... Test wheel, 10 ... Disc brake device, 1
2... Test disc plate, 13... Wheel, 14
...Load cell for braking measurement, 15...Base board, 6a.
...Arm, 10a. 10'a... lever, 10b, 10'b, 10c, 10
'c...pin.

Claims (1)

[Scope of utility model registration request] In a brake testing machine that measures the braking force of a brake shoe for a vehicle, a tread brake device with a sample brake shoe attached is installed inside the holder at the intermediate position between the support bearings at both ends of the swinging mount for measuring the braking force, and A vehicle brake testing machine characterized in that a disc brake device is mounted on the outside of the main shaft end side of the mount.