JPH08145853A - Gear testing apparatus of power circulation type - Google Patents

Abstract

PURPOSE: To obtain a testing apparatus which does not require to exchange a circulation gear even when the kind or principal items of a test gear are changed at the testing time, by making different gear ratios between a test gear transmission and a circulation gear transmission and setting a hydraulic slipping clutch of a multiple disc type at a power transmission system generating a rotary speed difference. CONSTITUTION: The gear ratio of a test, gear 12 and a test pinion 11 incorporated in a test, gear transmission 3 is set to be not equal to that of a circulation gear 10 and a circulation pinion 9 in a transmission 2. A hydraulic slipping clutch 7 of a multi disc type is set in the middle of a rotary shaft 6 connecting the transmissions 2 and 3. A pressure oil adjusted at a predetermined pressure via an ultra pressure valve and a proportional solenoid valve from a clutch- operating oil pump is fed to arm annular piston chamber in a clutch drum to press a clutch piston, so that clutch plates at the input and output sides are coupled each other. The clutch-operating oil is changed by the proportional solenoid valve, thereby changing the coupling degree of the clutch plates at the input and output sides. The transmission torque is thus controlled.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power circulation type gear testing device for testing the strength and durability of a test piece under continuous load operation, and more particularly to a device equipped with a load torque device using a slipping clutch. .

[0002]

2. Description of the Related Art In a power circulation type gear testing device, as a testing device for applying a desired torque during operation without stopping the device, for example, a device disclosed in JP-A-55-160826 is known. is there. This device is provided with a rotary cylinder between a small gear rotary shaft of one gear transmission and a small gear rotary shaft of the other gear transmission, and the rotary cylinder is connected to one rotary shaft. A first rotary member, and a second rotary member provided so as to be surrounded by the first rotary member and connected to the other rotary shaft,
A partition plate that forms a pressure oil chamber between the rotary members is provided on a part of the inner peripheral surface of each rotary member, and the rotary member is moved by supplying pressure oil to the pressure oil chambers. The load torque is applied by rotating the shafts opposite to each other and applying a torsional torque to the rotary shaft connected to the rotary cylinder.

[0003]

However, in the conventional torque load device as described above, since the front and rear rotary shafts are integrally connected in a state in which the torsion torque is applied to the rotary shaft, it is connected to the torque load device. The rotation speed of the rotating shaft to be used must be the same before and after the rotating cylinder. For this reason, the gear ratio of the test gear transmission and the circulating gear transmission is required to be the same.

That is, in the conventional power circulation type gear testing device, even if the circulation gear is still in a sufficiently usable state, each time the test is performed by changing the main points of the test gear, the circulation gear is also replaced accordingly. It had to be scrapped, and there was a problem that costs and time were spent in manufacturing and reassembling the circulating gears. The present invention solves the above-mentioned conventional problems, and a power circulation type gear testing device equipped with a torque load device that does not require replacement of a circulating gear even when a test is performed by changing the type or point of a test gear. It is intended to provide.

[0005]

In order to solve the above problems, according to the present invention, a circulation gear transmission and a test gear transmission are connected so that power circulates, and one of the gear transmissions is used as a prime mover. In the connected power circulation type gear testing device, set the gear ratio of the test gear transmission to a value different from the gear ratio of the circulation gear transmission, and control the clutch force by controlling the pressing force in the middle of the power circulation system. It is characterized in that a hydraulic multi-plate type slipping clutch whose transmission torque can be adjusted is provided.

[0006]

[Function] A power circulation system is constructed by making the gear ratio of the test gear transmission and the circulation gear transmission different, and interposing a hydraulic multi-plate slipping clutch in the power transmission system in which a difference in rotational speed occurs. Therefore, the transmission torque of the clutch is changed by changing the clutch operating oil pressure that presses the clutch plate.
Now, when the clutch operating oil pressure is increased, the transmission torque of the clutch increases while maintaining a predetermined clutch slip ratio caused by the difference in the tooth number ratio, and the rotating shaft of the power circulation system is twisted according to the transmission torque. As a result, the load torque acting on the test gear and the circulating gear increases. Conversely, when the clutch operating oil pressure is reduced, the transmission torque decreases and the load torque acting on the gear decreases.

[0007]

1 is a general system diagram of a power circulation type gear testing apparatus showing a first embodiment of the present invention. As shown in FIG. 1, the power circulation type gear testing device 1 includes a circulation gear transmission 2 and
A test gear transmission 3 arranged facing each other and used as a pair, and a circulating gear transmission 2 via a coupling 4
And rotating shafts 5 and 6 for coupling the gear to the test gear transmission 3, a hydraulic multi-plate slipping clutch 7 interposed in the middle of one rotating shaft 6, and a torque arranged on the other rotating shaft. It is composed of a detector 15 and a prime mover 8 connected to a drive shaft 13 of the circulating gear transmission 2.

A circulation gear 10 which is detachably fixed to a drive shaft 13 of the circulation gear transmission 2 meshes with a circulation pinion 9 which is detachably fixed to a driven shaft 14.
On the other hand, a drive motor 13 is connected to a drive shaft 13 of the circulation gear transmission 2, and a drive shaft 16 of a test gear transmission 3 is connected to the other end of the drive shaft via a rotary shaft 5 to drive the drive gear 13. Axis 16
A test gear 12 is detachably fixed to the. The sample gear 12 meshes with the sample pinion 11 which is detachably fixed to the driven shaft 17. The driven shaft 17 of the test gear transmission 3 and the driven shaft 14 of the circulating gear transmission 2 are connected by a rotary shaft 6 to form a power circulation system.
A hydraulic multi-plate type slipping clutch 7 is installed midway.

Further, the gear ratio Z ₁₂ / Z of the test gear 12 and the test pinion 11 built in the test gear transmission 3 is
_The gear ratio ₁₁ is set so that the gear ratios of the circulation gear 10 and the circulation pinion 9 incorporated in the circulation gear transmission 2 are not equal to the gear ratio Z ₁₀ / Z ₉ . For example, in the present embodiment, the ratio N ₂ of the driven shaft rotation speed N ₂ of the circulating gear transmission 2 to the driven shaft rotation speed N 3 of the test gear transmission _{3 is} increased.
The tooth ratio of each transmission is determined such that / N ₃ is 0.95 to 0.97. Then, in the middle of the rotary shaft 6 connecting the circulation gear transmission 2 and the test gear transmission 3, the clutch is not directly connected, but the clutch is always operated in a slip state,
A hydraulic multi-plate slipping clutch 7 is provided in which the coupling degree of the clutch is controlled by controlling the pressing force and the transmission torque of the clutch is adjusted.

FIG. 2 is a longitudinal sectional view showing a main part of a hydraulic multi-plate type slipping clutch 7 interposed in the power circulation system of the power circulation type gear testing apparatus in the first embodiment. Input shaft 18 of the slipping clutch 7
Is connected to the driven shaft 17 of the test gear transmission 3 via a rotating shaft, and the output shaft 19 is connected to the circulating gear transmission 2 via the rotating shaft.
Is connected to the driven shaft 14. As well known, the slipping clutch 7 itself includes a plurality of input side clutch plates 22 spline-fitted to a clutch hub 20 integrated with an input shaft 18, and a clutch drum 21 integrated with an output shaft 19.
Input side clutch plate 22
And a plurality of output side clutch plates 23 arranged alternately with each other, and pressure oil adjusted to a predetermined pressure from the clutch hydraulic oil pump 26 through the pressure regulating valve 27 and the proportional solenoid valve 28 is supplied to the clutch drum 21. Inner ring piston chamber 2
5, the clutch piston 24 is pressed to connect the input / output side clutch plates 22 and 23.
In this case, by changing the clutch operating oil pressure by the proportional solenoid valve 28, the degree of coupling between the input / output side clutch plates 22 and 23 changes, and the transmission torque of the clutch is controlled. Cooling oil is supplied from the lubricating oil pump 29 to the input / output side clutch plates 22 and 23 of the slipping clutch 7 in order to remove heat generation of the clutch plates due to slip.

On the other hand, a torque detector 15 is provided on the other rotary shaft 5 of the power circulation system, and the magnitude of the twist of this shaft is detected as a load torque signal, and this torque detection signal 34 is converted into a torque signal. Is supplied to a comparison calculator 32 through a device 31, is compared with a torque setting signal 30 from a torque setting device (not shown), and a torque correction signal 33 corresponding to the deviation is sent to the proportional solenoid valve 28, and the piston chamber Since the clutch pressing force supplied to 25 is controlled, the load torque acting on the power circulation system including the test gear is always maintained at a predetermined value.

FIG. 3 shows a second embodiment of the present invention, and is a longitudinal sectional view showing the main part of a circulating gear transmission in which a hydraulic multi-plate type slipping clutch is incorporated in the transmission. In this embodiment, as an alternative to the slipping clutch 7 arranged in the middle of the rotary shaft in the first embodiment shown in FIG. 1, a slipping clutch 42 is incorporated in a circulating gear transmission 41, and a slipping clutch in the middle of the rotary shaft is installed. The ripping clutch was abolished. As shown in FIG. 3, the slipping clutch 42 is the first clutch shown in FIG.
Since the structure is basically the same as that of the slipping clutch 7 of the embodiment, only parts different from the first embodiment will be described. The input shaft 40 is formed integrally with the clutch drum 50, and is connected to the driven shaft 17 of the test gear transmission 3 via a rotating shaft. On the other hand, the clutch hub 43 on the output side of the slipping clutch 42 is formed integrally with the circulation pinion 44,
The circulation pinion 44 is rotatably supported by the input shaft 40 via a bearing bush 45, and meshes with a circulation gear 47 which is detachably fixed to a drive shaft 46. Also, one side of the drive shaft 46 is connected to the prime mover 53,
The other is connected to the drive shaft 16 of the test gear transmission 3 via a rotary shaft.

The slipping clutch 42 includes a plurality of input side clutch plates 48 spline-fitted to the clutch drum 50 and a plurality of input side clutch plates 48 spline-fitted to the clutch hub 43 and arranged alternately with the input side clutch plates 48. Although not shown, the clutch drum 50 is composed of an output side clutch plate 49 and, like the first embodiment shown in FIG.
Pressure oil is supplied to the inner annular piston chamber 51. This pressure oil presses the input / output side clutch plates 48, 49 via the clutch piston 52 to connect the clutches, and the clutch transmission torque is changed by changing the clutch operating oil pressure, and the load acting on the power circulation system is changed. Torque is controlled. In the second embodiment of the present invention, the hydraulic multi-plate type slipping clutch is arranged on the driven shaft of the circulating gear transmission, but the same effect can be obtained by disposing it on the drive shaft.
Even if a slipping clutch is provided in the test gear transmission, the same effect can be obtained.

[0014]

As described above, according to the present invention, since the slipping clutch is provided in the power circulation system of the power circulation type gear testing device, it is not necessary to match the rotational speeds before and after the slipping clutch. Therefore, it is not necessary to make the gear ratio of the test gear transmission the same as the gear ratio of the circulation gear transmission. No need to replace gears. Further, since the circulation gear is not affected by the essential points of the test gear, it is possible to use only one type and the circulation gear can be stocked.

[Brief description of drawings]

FIG. 1 is an overall system diagram of a power circulation type gear testing device showing a first embodiment of the present invention.

FIG. 2 is a longitudinal sectional view of a main part of a hydraulic multi-plate slipping clutch according to a first embodiment.

FIG. 3 is a longitudinal sectional view of a main part in which a slipping clutch according to a second embodiment is incorporated in a circulating gear transmission.

[Explanation of symbols]

 1 Power circulation type gear test device 2,41 Circulation gear transmission 3 Test gear transmission 4 Coupling 5,6 Rotating shaft 7,42 Slipping clutch 8,53 Motor 9,44 Circulation pinion 10,47 Circulation gear 11 Test pinion 12 Test gear 13,16,46 Drive shaft 14,17 Driven shaft 15 Torque detector 18,40 Input shaft 19 Output shaft 20,43 Clutch hub 21,50 Clutch drum 22,48 Input side clutch plate 23,49 Output side clutch plate 24,52 Clutch piston 25,51 Piston chamber 26 Clutch hydraulic oil pump 27 Pressure regulating valve 28 Proportional solenoid valve 29 Lubricating oil pump 30 Torque setting signal 31 Torque signal converter 32 Comparator 33 Torque correction signal 34 Torque detection Signal 45 bearing bush

Claims (1)

[Claims] 1. A power circulation type gear test apparatus in which a circulating gear transmission and a test gear transmission are connected so as to circulate power, and one of the gear transmissions is connected to a prime mover, the test gear transmission The gear ratio of the gear is set to a value different from that of the circulating gear transmission, and a hydraulic multi-plate slipping clutch whose clutch transmission torque can be adjusted by controlling the pressing force is installed in the middle of the power circulation system. A power circulation type gear testing device characterized by being equipped.