JPH067347Y2 - Test device with swing function - Google Patents

Description

Detailed Description of the Invention A. BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for testing the performance and durability of an endless belt that transmits rotation such as a chain or a belt, which is improved so that it can be operated in a state closer to mounting.

B. Outline of the invention Since either one of the intermediate bearings supporting the two shafts that stretch the endless belt for transmitting rotation can be oscillated, it is possible to mount not only the tension on the specimen but also the same as when mounted. Twist and kinks are added. Therefore, the reproducibility of the test is enhanced, and more accurate results can be obtained.

C. 2. Description of the Related Art As a conventional performance and durability tester for chains or belts, the device shown in FIG. 12 is generally used. That is, a shaft 3 connected to the drive device 1 via a clutch 2,
The shaft 5 connected to the absorber 4 and the intermediate bearing 6, respectively
It is supported in parallel with 7. Then, sprockets 8 and 9 are attached to the shafts 6 and 7, respectively, and a chain is stretched over the sprockets 8 and 9 as a sample 10. Therefore, when the drive device is rotated, the specimen 10 is operated under the condition that the absorber 4 applies a predetermined load.

D. Problems to be Solved by the Invention In motorcycles, mopeds, or bicycles, the drive force from the engine is transmitted to the wheels by using chains or belts, but the drive wheels are not affected by the unevenness of the ground or the inclination during cornering. It is suspended by a suspension so that it can be moved up and down or tilted to accommodate it. Therefore, when the drive wheel undergoes such a change, not only the tension acts on the chain, the belt, etc., but also the resultant force that is twisted or twisted.

However, since the conventional tester only operates in a steady state where tension is simply applied, the transmission performance and the durability test in the state where the twist and the twist are applied have not been performed. In other words, the conventional tester performed the test under different conditions from the mounting.

An object of the present invention is to provide a rocking function-equipped test apparatus that can be operated in a state closer to the mounted state.

E. Means and Actions for Solving the Problems Since it is possible to swing either one of the intermediate bearings that respectively support the two shafts that stretch the specimen, which is an endless belt that transmits rotation, if the specimen has only tension. Without the same twist and kinks as it was implemented. Therefore, the reproducibility of the test is enhanced, and more accurate results can be obtained.

F. Embodiment Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.

1 and 2 show a first embodiment of the present invention. As shown in both figures, the shaft 3 connected to the drive unit 11 via the clutch 12 is supported by the intermediate bearing 18, while the rail 2
On the slide bed 22, which is movably mounted in the direction indicated by the arrow in FIG.
A shaft 15 connected via 3 is supported by an intermediate bearing 17. The shafts 13 and 15 have sprockets 18 and 1 respectively.
9 is attached, and a chain is stretched over these sprockets 18 and 19 as a specimen 20. Specimen 2
Adjust the inter-axis distance according to the length of 0, or test piece 2
A moving device 24 is attached to the slide bed 22 so that the inter-axis distance can be changed when 0 is attached.

Here, the intermediate bearing 16 is of a fixed type as in the conventional case, whereas the intermediate bearing 17 is of an oscillating type. That is, as shown in FIG. 2, in the intermediate bearing 17, the stands 26 and 27 are erected on the bed 25, the bearing main body 28 is sandwiched between the stands 26 and 27, and the pins penetrating the stands 26 and 27 are inserted. It is supported by 29 and 30 so as to be tiltable back and forth. Further, a fixing stand 31 is attached on the bed 25, and the fixing stand 31
An arcuate hole 32 with a tilt angle scale is formed in the. By inserting a bolt 33 into the hole 32 and tightening a leg 34 provided on the bearing body 28, the inclination angle of the bearing body 28 can be fixed. The inclination angle of the bearing main body 28 is not particularly limited, but can be set to about ± 2.5 ° in the actual situation. The universal shaft coupling 23 for allowing such an inclination angle is not limited to, for example, a constant velocity ball joint or a propeller shaft whose shaft length is allowable by a spline, but a rubber shaft coupling or a metal flexible coupling 35 shown in FIG. May be used.

With the device having such a structure, the test piece 20 such as a chain
On the other hand, in performing the performance and durability test, if the tilt angle of the swinging type intermediate bearing 17 is horizontal as shown in FIG. 4 (b),
The test can be performed in the state where only the tension is applied to the sample 20 as in the conventional case. Next, as shown in FIG. 4 (a), the intermediate bearing 17
If the angle is a front downward slope or a front upward slope as shown in FIG. 7B, not only the tension but also the twist or kink is applied to the sample 20. That is, it is possible to test the performance and durability of the test piece 20 in a state closer to the mounting state. For this reason, the reproducibility of the test is enhanced and accurate results are obtained.

Although the intermediate bearing 17 tilts back and forth in the above embodiment, the invention is not limited to this. For example, the fifth
The intermediate bearing of the second embodiment shown in FIGS. 6 and 6 may be rotated left and right in addition to tilting forward and backward.
That is, as shown in both figures, the revolving bed 38 is placed on the revolving seat surface 37 formed on the fixed bed 36, and the revolving shaft 39 protruding downward in the center of the revolving bed 38 is located in the center of the revolving seat surface. It is inserted in the formed turning center hole.
An arcuate hole 40 is formed in the swivel bed 38, and a bolt 41 is inserted into the arcuate hole 40. Therefore, the swivel angle can be freely adjusted by rotating the swivel bed 38 left and right around the swivel shaft 39 and tightening the bolts 41 inserted in the arcuate holes 40. Further, on the swivel bed 38, the bearing main body 28 is formed in the same manner as in FIG.
Can be tilted back and forth.

In such an oscillating bearing, as shown in FIGS. 7 (b) and 7 (e), if the turning angle is parallel and the tilt angle is horizontal, only the tension acts on the test piece 20. But
If the vehicle is turned counterclockwise or clockwise as shown in (a) or (c) of the figure, or if it is inclined forwardly or downwardly as shown in FIG. Is subject to twisting and twisting as well as tension. Moreover, if the turning and the tilting are executed at the same time, a more complex combination stress is generated, and the test can be performed in a state closer to mounting.

The oscillating type intermediate bearing of the above-mentioned embodiment is suitable for a relatively small and light weight, but if it is relatively large and heavy, it may take time and effort to adjust the inclination and turning. In such a case, it is preferable to perform as shown in FIGS. 8 and 9. FIG. 8 shows that a gear 38a is formed in a part of the swivel bed 38, and this is meshed with a gear 42 rotatably supported by the fixed bed 36, and the gear 42 is manually rotated to be rotated by the handle 43. , Swivel bed 38 and legs 26 of the bearing body
And are connected via a turnbuckle 44.
Therefore, the intermediate bearing 17 can be easily swung or tilted by operating the handwheel 43 and the turnbuckle 44. On the other hand, in FIG. 9, a gear 38 a is formed in a part of the swivel bed 38, and the gear 42 a rotatably supported on the fixed bed 36 is meshed with the gear 38 a.
Is rotated by a motor 45 with a reduction gear, and the swivel bed 38 and the leg 27 of the bearing body are connected via a hydraulic or pneumatic cylinder 46. Therefore, the intermediate bearing 17 can be easily swung or tilted by energizing the motor 45 with a speed reducer and feeding pressure oil or compressed air to the hydraulic or pneumatic cylinder 46.

As shown in FIGS. 10 and 12, the slide bed 2 on which the intermediate bearing (oscillating type) 17 and the absorbing device 14 and the like are placed.
2 may be moved in the horizontal direction in the drawing by the moving device 24. By doing this: Since the positions of the sprockets 18 and 19 around which the test piece 20 is wound are displaced relative to each other in the axial direction, shear stress is generated in the test piece 20, so that various tests of various variations can be performed. Further, in the above embodiment, one of the intermediate bearings is of the swing type, but both may be of the swing type. Further, if the absorption device and the drive device are operated according to a certain program, and at the same time, the rotation and inclination angle of the intermediate bearing are changed, it is possible to achieve a state closer to mounting.

G. Effects of the Invention As described above in detail with reference to the embodiments, at least one of the intermediate bearings of the present invention is a swing type, so that the chain or the belt is twisted or twisted so as to be in the same state as the actual vehicle. be able to. Therefore, the reproducibility of the test is improved and highly accurate results are obtained.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention, and FIGS. 2 (a) (b).
(c) is a front view, side view, back view of the rocking type intermediate bearing used in the present invention, FIG. 3 is a sectional view of a metal flexible coupling, and FIGS. 4 (a) (b) (c) are FIG. 5 is an explanatory view showing how the rocking type intermediate bearing inclines, FIG. 5 is a perspective view of a rocking type intermediate bearing according to a second embodiment of the present invention, and FIG.
(a) (b) (c) are front view, side view and rear view of the rocking type intermediate bearing shown in Fig. 5, respectively, and Fig. 7 (a) (b) (c) (d) (e) ( f) is an explanatory view of the swinging and tilting of the rocking type intermediate bearing, FIG. 8 (a) and FIG. 9 (a) are explanatory views showing the turning and tilting means, respectively, and FIG. 8 (b). , Fig. 9 (b) is Fig. 8 respectively
Part A in (a), an enlarged view of part B in FIG. 9 (a), FIG. 10,
FIG. 11 is a plan view and a front view showing a modification of the embodiment shown in FIG. 1, and FIG. 12 is an explanatory view of a conventional testing machine. In the drawings, 11 is a drive device, 13 and 15 are shafts, 14 is an absorber, 16 is an intermediate bearing (fixed type), 17 is an intermediate bearing (oscillating type), 18 and 19 are sprockets, 20 is a specimen, 23 Is a universal shaft joint.

Claims (1)

[Scope of utility model registration request] 1. An endless belt for transmitting rotation is used as a test piece and stretched between a pair of shafts, and the shafts are respectively driven.
In a test device connected to an absorbing device, one of intermediate bearings respectively supporting the shafts is swingably provided, and the shaft supported by the swingable intermediate bearings and the driving device or the absorbing device are provided. A test device with a swing function, characterized in that it is connected to the device via a universal joint.