JP2729274B2 - Rolling wear tester - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a rolling abrasion tester, in which an eccentric load is applied to a contact portion such as a mast section steel of a crane rail or a forklift, for example. The present invention relates to a test device that simulates a phenomenon that a part is peeled or worn in a laboratory.

(Prior Art) For example, a mast of a crane rail, a rail or a forklift often receives an uneven load from a wheel or a roller during use, and a part thereof is peeled off or rolled and worn.

Since such a phenomenon impairs the function of the device and impairs the safety, it is necessary to conduct a rolling wear test before or at an appropriate time.

Conventionally, as this type of testing machine, there is a testing machine in which a wheel is placed on a rail test piece, a vertical load is applied by a load load device, and either the wheel or the rail is moved. Further, there is a method in which a lateral pressure load is applied by a lateral pressure load device together with the vertical load (JP-A-58-53736).

According to these conventional testing machines, a rolling wear test can be performed, but since a large vertical load must be applied, not only the load device but also the load support and the load reaction force receiving member become large. In this case, the entire apparatus becomes large-scale. For example, when the load applied to the wheel is large, the load is applied by a hydraulic device, but the reaction force of the hydraulic pressure must be moved together with the wheel, and the device becomes large.

In the case of moving the rail, the rail is placed on a moving member, for example, a slider, and the slider is lifted by hydraulic pressure or moved by receiving with a roller. Test accuracy may be reduced.

(Problems to be Solved by the Invention) The present invention can reduce the size of a test apparatus by omitting a load support, a load load reaction force receiving member, and the like.
An object of the present invention is to provide a rolling abrasion tester capable of improving test accuracy and improving test efficiency.

(Means for Solving the Problems) The gist of the present invention is as follows.

(1) A receiving device 2 for mounting at least a pair of test pieces 1, 1 facing each other in parallel at a distance from each other, and a rotating body 4 in a state where the rotating bodies 4, 4 are in contact with the test pieces. Through the bearing housings 13 and 13 rotatably supporting the shaft, the load shafts 5 and 5 connected to the bearing housing, the load shaft and the bearing housing,
The two load applying devices 6, 6 connected to the load shaft and the two load applying devices 6, 6 are connected to each other for applying a load directed in the axial direction of the load shaft to the rotating body. And a traveling drive device 8 for reciprocating a mount 10 on which the load device is mounted in a longitudinal direction of the test piece.
A rolling wear tester characterized by comprising:

(2) A receiving device 2 for mounting at least a pair of test pieces 1, 1 facing each other in parallel at a distance from each other, and a rotating body 4 in a state where the rotating bodies 4, 4 are in contact with the test pieces. Through the bearing housings 13 and 13 rotatably supporting the shaft, the load shafts 5 and 5 connected to the bearing housing, the load shaft and the bearing housing,
Thrust between two load-loading devices 6, 6 connected to the load shaft for applying a load directed in the axial direction of the load-shaft to the rotating body; A thrust load loading device 11 that applies a load in an oblique direction connected via load transmission shafts 12 and 12, and a gantry 10 on which the load loading device and the thrust load loading device are placed are arranged in the length direction of the test piece. A rolling wear tester comprising a traveling drive device 8 for reciprocating traveling.

 The present invention will be described in detail based on an embodiment shown in the drawings.

In FIG. 1, reference numerals 1 and 1 denote at least a pair of long test pieces, which in this embodiment are made of shaped steel by rails.
In the figure, two pairs of test pieces 1 and 1 are provided, but it is obvious that the present invention is not necessarily limited to this. In the description of the drawings, only a pair of test pieces will be described. The test pieces 1, 1 are held in parallel in a spaced apart manner in a receiving device 2. 3 is a test piece holder. Reference numerals 4 and 4 denote rotating bodies, for example, wheels, rollers, and the like, which are rotatably supported by bearing boxes 13 and 13 so as to rotate while contacting, for example, the flange portions 1a and 1a of the test pieces 1 and 1. Reference numerals 5 and 5 denote load shafts for transmitting a load to the rotating body 4, one end of which is connected to the bearing housings 13 and 13. 6, 6
Is a load applying device, and the rotating bodies 4 and 5 are connected via load shafts 5 and 5 and bearing housings 13 and 13 which are pin-connected to the load applying device.
4, a load directed in the axial direction of the load shaft is applied. For example, a hydraulic device or an electric device is used as the load applying devices 6. In FIG. 1, two load applying devices 6 and 6 are provided so as to be opposite to each other, and they are connected by a connecting shaft 7, and the respective load applying devices 6 and 6 are rotated via the load shafts 5 and 5. The bodies 4, 4 are connected to bearing housings 13, 13 which rotatably support the bodies.

When the load applying devices 6 and 6 are operated, a load is applied from the rotating body 4 to the flange portions 1a and 1a of the test pieces 1 and 1 placed in parallel on the receiving device 2 in opposition. At this time, since the rotating bodies 4 and 4 are supported by the bearing boxes 13 and 13 connected to the load shafts 5 and 5, the load loads given by the respective load applying devices 6 and 6 react with each other. Thus, load bearing and load reaction force receiving are not required or can be reduced. FIG. 1 shows an example in which two load applying devices 6 and 6 are provided on the back side, but two load applying means can be moved in opposite directions from both ends of one load applying device body in opposite directions. If configured, the load applying device may be one. Reference numeral 8 denotes a traveling drive device for traveling the rotating bodies 4 and 4, and an operation shaft 9 of the traveling drive device is a base for the load applying devices 6 and 6.
10 and the traveling drive unit 8 is reciprocated right and left in the figure to bring the circumferential side surfaces of the rotating bodies 4 and 4 into contact with the inner surfaces of the flange portions 1a and 1a of the test pieces 1 and 1. The test pieces 1 and 1 are reciprocated in the length direction while rotating while being rotated. By this reciprocation, the rotating bodies 4, 4
Rotates while abutting on the flange portions 1a, 1a of the test pieces 1, 1 to perform a rolling wear test.

At the time of the rolling rolling wear test of the rotating bodies 4 and 4, the rotating bodies 4 and 4 rotate while the load is continuously applied from the load applying devices 6 and 6, so that the receiving apparatus 2 does not rattle.

Further, as shown in FIG. 2, a thrust load applying device 11 is further applied to the test pieces 1 and 1 from the rotating bodies 4 and 4 so as to apply a thrust load in addition to the radial load and perform a rolling wear test. It is provided in connection with the load applying devices 6 and 6. This connection is made by pin connection, and the load shafts 5, 5
By transmitting a load in an oblique direction through the thrust load transmitting shafts 12 and 12 to the test pieces 1 and 1, the thrust load is applied to the test pieces 1 and 1 from the rotating bodies 4 and 4 in addition to the radial load. Is performed.

FIG. 3 shows another embodiment of the present invention in which a radial load and a thrust load are applied to the inner flange portions 1b and 1b of the test pieces 1 and 1 from the rotating body 4 to perform a rolling wear test.

(Effects of the Invention) According to the configuration according to the present invention, the load applied by the load applying device receives a reaction force with each other, so that the load support or the load reaction force receiving becomes unnecessary or these are small. And the test apparatus can be miniaturized. Further, since a pair of opposing test pieces or a plurality of pairs of test pieces can be placed on the receiving apparatus for testing, the test efficiency can be improved. further,
When the vehicle reciprocates under a load, the test accuracy is good because rattling does not occur.

[Brief description of the drawings]

FIG. 1 is a plan view of one embodiment of the present invention, FIG. 2 is a plan view of another embodiment of the present invention, and FIG. 3 is a side view of another embodiment of the present invention. 1: test piece, 1a, 1b: flange, 2: receiving device, 3: test piece holder, 4: rotating body, 5: load shaft, 6: load applying device, 7: connecting shaft, 8: traveling drive device, 9: Working shaft, 10: Stand, 11: Thrust load load device, 12: Thrust load transmission shaft, 13: Bearing box

Claims (2)

(57) [Claims] 1. A receiving device 2 for mounting at least a pair of test pieces 1, 1 facing each other in parallel at a distance from each other, and a receiving device 2 in a state where rotating bodies 4, 4 abut against said test pieces. Bearing boxes 13 and 13 rotatably supporting a rotating body, load shafts 5 and 5 connected to the bearing box, and a load directed in the axial direction of the load shaft via the load shaft and the bearing box. Two load devices 6, 6 connected to the load shaft for loading the rotating body, a connection shaft 7 interconnecting the two load devices 6, 6, and the load device Stand 10 on which is mounted
And a traveling drive device 8 for reciprocating the specimen in the longitudinal direction of the test piece. 2. A receiving device 2 for mounting at least a pair of test pieces 1, 1 facing each other in parallel at a distance from each other, and a receiving device 2 in a state where rotating bodies 4, 4 abut against said test pieces. Bearing boxes 13 and 13 rotatably supporting a rotating body, load shafts 5 and 5 connected to the bearing box, and a load directed in the axial direction of the load shaft via the load shaft and the bearing box. Two load devices 6, 6 connected to the load shaft for applying a load to the rotating body, and connected between the two load devices 6, 6 via thrust load transmitting shafts 12, 12. A thrust load applying device 11 for applying a load in the oblique direction, and a traveling driving device 8 for reciprocatingly moving the gantry 10 on which the load applying device and the thrust load applying device are mounted in the length direction of the test piece. Rolling wear tester characterized by the following.