JPH0236890B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a rail ring tilting and turning mechanism for a vehicle testing device for railway vehicles, which has functions such as tilting and turning. be.

[Conventional technology and problems]

In conventional vehicle testing equipment, each wheel is independent in order to provide functions such as tilting and turning, and the drive shafts of the left and right wheels are connected freely in the center of the equipment. , leading to an increase in torsional vibration, etc. In addition, in order to make the track wheels perform operations such as tilting and turning, the bottom and side surfaces of the support base that supports the drive shaft must slide, which requires precision in machining and assembling these parts, as well as making the operation difficult. This resulted in an increase in the number and capacity of hydraulic cylinders, which resulted in disadvantages such as a reduction in various operational responses.

[Purpose of the invention]

The present invention solves the above-mentioned drawbacks, and the present invention has a single drive shaft.
To provide a wheel tilting/swivel mechanism for a vehicle testing device, in which a wheel is provided on the left and right sides of the shaft, and only the drive shaft and the wheel are tilted and turned.

[Summary of the invention]

Fixedly installed in the center of the vehicle testing equipment bed, and
A cylinder mount having two hydraulic cylinders for swinging horizontally on both sides, a cylinder mounting base fixed to the left and right ends of the vehicle testing equipment bed, and a self-aligning bearing inside, and a cylinder mounting base for tilting the self-aligning bearing up and down. While arranging a hydraulic cylinder, the self-aligning bearing and the second
a bearing stand formed by integrating two tilting hydraulic cylinders via a moving stand, and fitting the moving stand so as to be slidable in the vertical direction by a vertical hydraulic cylinder; , one end is slidably inserted into a key groove of a drive shaft connected to a power source via a telescoping joint, and
A spherical cylinder having a sliding groove in the driving shaft direction on a spherical surface, and a convex metal fitting having a spherical surface matching the spherical surface of the spherical cylinder and capable of sliding in a groove provided on the spherical surface of the spherical cylinder. A spherical flange that is tiltable in the direction of the drive shaft and is configured to be able to rotate around the convex portion of the convex metal fitting, and that firmly sandwiches the raceway from both sides, and is attached to both sides of the first spherical flange, and It is composed of a thrust bearing that connects the front tilt hydraulic cylinder and the swing hydraulic cylinder, and controls the front tilt hydraulic cylinder and the swing hydraulic cylinder via the front thrust bearing, and also controls the vertical hydraulic cylinder. Accordingly, the drive shaft is inclined.

〔Example〕

Examples of the present invention will be described below.
This will be explained according to the diagram.

A drive shaft 2 is connected at one end to a bed 1 of a vehicle testing apparatus by a variable speed motor via a telescoping joint 3, and supported at both ends by self-aligning bearings 4.

The self-aligning bearing 4 is a movable base 6 that is fitted into a bearing base 5 fixed on the bed 1 so as to be able to slide up and down.
is held in The vertical movement of the moving table 6 is performed by a vertical hydraulic cylinder 7 installed at the bottom of the moving table 6.
This is done by

Further, the drive shaft 2 is fitted inside a self-aligning bearing 4 so that the inner diameter surface of a spherical cylinder 8 can slide left and right, and is prevented from rotating by a key 13.

Furthermore, the outer diameter surface of the spherical tube 8 is formed by spherical tube flanges 9, 1.
The spherical surface of the spherical tube 8 is provided with a groove 22 in the axial direction in order to correspond to the inscribed surface of the spherical tube 8 and to be slidably assembled. is provided, and a convex metal fitting 1 is provided in the groove 22.
The bottom of the convex metal fitting 11 is slidably attached to the center hole of the spherical flanges 9 and 10, and the protrusion of the convex metal fitting 11 is rotatably attached to the center hole of the spherical flanges 9 and 10.

Furthermore, the spherical flanges 9 and 10 firmly clamp the raceway ring 12 on their inner surfaces without slipping during rotation, and the thrust bearings 12 on their outer surfaces.
4 and 15, the cylinder mounting base 2 is installed at the upper and lower ends of the movable base 6 so that it can be tilted and rotated.
It is pressed by tilting hydraulic cylinders 16, 17 and turning hydraulic cylinders 18, 19, which are respectively attached to the left and right sides of 0.

In order to move the track ring 12 left and right, the tilting hydraulic cylinders 16 and 17 and the turning hydraulic cylinder 1 are used.
This is possible by expanding and contracting 8 and 19 in parallel.

The track wheel inclination and turning mechanism of the vehicle testing device configured as described above will be specifically explained assuming the actual condition of the track. First, when assuming a curved trajectory, the vertical hydraulic cylinder 7 expands and contracts to drive the drive shaft 2.
is tilted to give a difference in height between the left and right track wheels 12, and the tilting hydraulic cylinders 16, 17 are operated to correct the degree of inclination. Furthermore, the turning hydraulic cylinders 18 and 19 operate to give the raceway 12 a turning degree according to the radius of the curve.

In addition, if a gauge deviation is assumed, the hydraulic cylinders 16 and 17 for tilting and the hydraulic cylinder 1 for swinging
8 and 19 are operated in parallel.

〔Effect of the invention〕

As described above, according to the mechanism of the present invention, a vehicle testing device with excellent performance and durability can be manufactured.
This saves the trouble of on-site driving tests of vehicles, and is expected to be highly effective in researching ways to improve vehicle performance.

[Brief explanation of drawings]

Figure 1 is a longitudinal cross-sectional view of this mechanism, Figure 2 is a cross-sectional view of the mechanism with the raceway ring turned, Figure 3 is a perspective view of the convex metal fitting, and Figure 4 is an elevational view of the raceway part. , FIG. 5 is a side view of the raceway portion. 1...Bed, 2...Drive shaft, 3...Expansible joint,
4... Self-aligning bearing, 5... Bearing stand, 6... Moving stand, 7
...Upper and lower hydraulic cylinder, 8...Spherical cylinder, 9,10...
Spherical flange, 11...Convex metal fitting, 12...Rail ring, 1
3...Key, 14,15...Thrust bearing, 1
6, 17... Hydraulic cylinder for tilting, 18, 19...
Hydraulic cylinder for swinging, 20... Cylinder mounting base, 21... Wheels of test vehicle, 22... Groove of spherical cylinder.

Claims (1)

[Claims] 1 A cylinder mount fixedly installed in the center of the vehicle testing equipment bed and having two hydraulic cylinders for swinging horizontally on both sides; A tilting hydraulic cylinder is arranged above and below the self-aligning bearing and the self-aligning bearing, and the self-aligning bearing and the two tilting hydraulic cylinders are integrated via a moving table, and the moving table is connected to the vertical hydraulic cylinder. A bearing stand that is fitted in a cylinder so as to be slidable in the vertical direction, and a drive shaft that is fitted into the self-aligning bearing and whose one end slides into a keyway portion of the drive shaft connected to a power source via a telescopic joint. can be inserted,
and a spherical tube having a sliding groove in the driving shaft direction on a spherical surface, and a convex metal fitting having a spherical surface matching the spherical surface and capable of sliding in a groove provided on the spherical surface of the spherical tube. a spherical flange that can be tilted in the drive shaft direction through the spherical flange and can be rotated about the convex part of the convex metal fitting as an axis, and that firmly sandwiches the raceway from both sides; It also includes a thrust bearing that connects the front tilt hydraulic cylinder and the swing hydraulic cylinder, and controls the front tilt hydraulic cylinder and the swing hydraulic cylinder via the front thrust bearing, and also controls the vertical hydraulic cylinder. By controlling and tilting the drive shaft, the track wheels are tilted and tilted.
A wheel tilting and turning mechanism for a vehicle testing device, which is characterized by providing functions such as turning.