JP2000105171A - Testing apparatus for power transmission system device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a testing apparatus for a power transmission system device which can test a performance with driving motors connected to both an output side and an input side upon necessities and therefore can accurately test the performance such as vibrations, noises or the like of the power transmission system device such as a transmission, a differential gear or the like having a power transmission shaft at the output and input sides. SOLUTION: The apparatus has driving motors 15, 19 to be connected via flexible couplings 13, 18 to an output side and/or an input side of a transmission shaft of a power transmission system device 10, and a load sensor part 30 arranged between a power-transmitting system device mount face 11 and a device-supporting part mount face 5. The load sensor part 30 has mount plates 31, 32 oppositely arranged to be secured to the mount faces 11 and 5 respectively and a plurality of load sensors 33 held between the mount plates 31 and 32 and arranged at positions of an equal distance from a center of the transmission shaft of the power transmission system device 10. Signals from the load sensor 33 are operated by an operation process part 51, thereby judging and diagnosing a performance of the power transmission system device 10.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a test apparatus for judging and analyzing the performance, such as vibration and noise, of a power transmission system such as a transmission and a differential gear.

[0002]

2. Description of the Related Art Conventionally, in the development and production of power transmission devices such as transmissions and differential gears, for example, vibration and noise of these devices are evaluated to determine and analyze the performance of the devices.

[0003] One method of evaluating the vibration and noise performance of a conventional power transmission system device is an evaluation based on the human senses. It is difficult to quantitatively evaluate the performance of a device by the five senses of a person, and there is an error due to an individual, so that the evaluation may vary and may be overlooked.

Therefore, a test apparatus 1A as shown in FIG. 9 is used. In other words, the conventional test apparatus 1A includes a substantially L-shaped mounting jig 2, for example, a power transmission system device such as a transmission 10 is mounted on the vertical support 4 of the mounting jig 2, and a connection joint 12 is provided on the output side. An output-side motor 15 is connected to the transmission 10, and an input-side motor 16 is connected to an input side of the transmission 10 as necessary, as shown in FIG. In the test apparatus 1A having such a configuration, the transmission main body 10 is provided with an accelerometer 41 for performing evaluation based on acceleration vibration, and the output side connection joint 12 is provided with a torque meter 42 for performing evaluation based on torque.
Are directly attached, and the output is charged amplifier 5
1 and transmitted to the data processing device 53 via the torque amplifier 55, and analyzed by the judgment evaluation device 54 to evaluate the performance.

[0005]

However, in the above-described conventional test apparatus 1A, the accelerometer 41 is directly attached to the transmission casing main body 10 as described above. There has occurred. Further, the accelerometer 41 used conventionally has poor measurement accuracy and sensitivity, and it is difficult to measure a minute change. Furthermore, when performance evaluation is performed on a production line, it is necessary to reattach the accelerometer 41 every time the specimen, that is, the transmission 10 to be measured changes, which has a problem in terms of work efficiency.

When a normal torque meter 42 is attached to the output side connection joint 12, the rigidity of the entire drive system is lower than that of the actual drive system, and the vibration mode is different from the actual one. On the other hand, if a high-rigidity torque meter having little influence is used, the accuracy is limited.

For example, Japanese Patent Application Laid-Open No. Hei 8-247882 discloses an apparatus for detecting the magnitude of shaft runout of a rotating body such as a grinding wheel. This detection device is for determining the direction and magnitude of the shaft runout of the grinding wheel, and pressure sensors are attached to the lower four corners of a casing that supports the rotating shaft to which the grinding wheel is attached. The direction and magnitude of the shaft blur are determined based on the load signals in the three axial directions.

However, in such a method, a power transmission shaft or the like is provided on the output side and the input side, and a power source such as a transmission or a differential gear that requires connection of a drive motor on the output side and the input side during a test is required. It is not possible to perform performance tests on transmission equipment.

In the test apparatus described in the above publication, it is considered that a drive motor for the grinding wheel is installed in the casing. Therefore, this test apparatus also measures the vibration including the vibration of the drive motor. Therefore, the method cannot be applied to a performance test that requires only measurement of vibration of a power transmission system device such as a transmission and a differential gear.

Accordingly, it is an object of the present invention to perform a performance test by connecting a drive motor to the output side and the input side as necessary, and therefore, a transmission having a power transmission shaft on the output side and the input side, An object of the present invention is to provide a test device for a power transmission device capable of accurately testing the performance of a power transmission device such as a differential gear, such as vibration and noise.

Another object of the present invention is to eliminate the influence of the vibration of the drive motor connected to the output side and the input side.
An object of the present invention is to provide a power transmission system device test apparatus that can accurately measure only vibrations of a power transmission system device such as a transmission and a differential gear.

Another object of the present invention is to eliminate the necessity of re-attaching a sensor each time a power transmission system device such as a transmission and a differential gear to be subjected to a test is changed.
An object of the present invention is to provide a power transmission system test apparatus that can be used with good workability in a production process and the like.

[0013]

The above object is achieved by a power transmission system test apparatus according to the present invention. In summary, the present invention relates to a test apparatus for determining and analyzing the performance of a power transmission device, a device mounting jig having a device support portion having a vertical mounting surface for mounting the power transmission device to be tested. And an output side of the power transmission system device and / or
Or a drive motor connected to the output side and / or input side transmission shaft of the power transmission system device via a flexible coupling to drive the input side transmission shaft, the power transmission system device mounting surface, and the device A load sensor unit disposed between the power transmission system device mounting surface and the device support unit mounting surface, the load sensor units being opposed to each other. And a plurality of load sensors sandwiched between the two mounting plates and arranged at an equal distance from the center of the transmission shaft of the power transmission system device, and a signal from the load sensor is sent to an arithmetic processing unit. A power transmission system device test apparatus, wherein the power transmission system device performance is determined and analyzed by calculating the power transmission system device performance.

According to one embodiment of the present invention, the load sensor is a piezoelectric sensor, and three or more load sensors are arranged. Preferably, the piezoelectric sensor is a quartz force transducer, and in particular, the quartz force transducer is a one-component or three-component force transducer.

According to a preferred embodiment of the present invention, the device mounting jig is mounted on a main body platen mounted on a concrete base, and an output side drive motor and / or an input side drive motor of the power transmission system device. Is mounted on a drive side platen separated from the main body platen, and more preferably, each platen is mounted on a concrete base via a vibration isolating member.

The test apparatus of the present invention is suitably used in a power transmission system such as a transmission or a differential gear for measuring vibration and noise and testing the performance.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a power transmission system testing apparatus according to the present invention will be described in more detail with reference to the drawings.

Referring to FIG. 1, there is shown an embodiment of a power transmission system device test apparatus according to the present invention. In this embodiment, the power transmission system device to be tested is a transmission, but the present invention is not limited to this.

In this embodiment, a power transmission system test apparatus 1 is provided with a horizontal base 3 and a vertical equipment support 4 for mounting a transmission 10, and has a substantially L-shaped equipment mounting jig. Tool 2 is provided. The base 3 of the device mounting jig 2 is fixed to the main body surface plate 101 so as to be freely attached. The main body platen 101 is, for example, a concrete base 104.
It is installed in.

As will be understood with reference to FIG. 2, the input-side casing mounting surface 11 of the transmission 10 is also provided.
Is the mounting surface 5 of the device supporting portion 2 via the load sensor portion 30.
Attached to. A connection joint 12 protruding from the output side of the transmission 10 is connected to an output side motor via a flexible coupling 13 and a flywheel 14. Further, an input side motor 19 can be connected to an input side of the transmission 10 via an equivalent inertia body 16, an electromagnetic clutch 17 and a flexible coupling 18 as necessary. As in the present embodiment, the output side and the input side of the transmission 10 are connected to the drive motor 1 via the flexible couplings 13 and 18.
5 and 19, vibrations of the drive motors 15 and 19 are transmitted to the transmission 10 and adverse effects are reduced.

According to the present embodiment, the transmission 1
The flexible coupling 13, the flywheel 14 and the output side motor 15 connected to the output side connection joint 12 are appropriately connected to the output drive side surface plate 102 separated from the main body surface plate 101 via bearing means 20. Will be installed. The output side platen 102 is installed on a concrete base 104. The output drive side platen 102 can be formed integrally with the main body platen 101. However, as in the present embodiment, the output drive side platen 102 is separated from the main body platen 101 so that the vibration caused by the output side motor 15 is reduced. This prevents transmission to 101 and enables highly accurate measurement.

On the other hand, in the present embodiment, as described above, the equivalent inertia body 16, the electromagnetic clutch 17, the flexible coupling 17, and the input side motor 19 are appropriately connected to the bearing means 20.
The input drive side platen 103 is installed on the main body platen 101 via the interface. However, similarly to the output drive side platen 102, the input drive side platen 103 can also be separated from the main body platen 101 and mounted on the concrete base 104, thereby further improving the accuracy. Can be.

According to the present embodiment, as described above, the output side and the input side of the transmission 10 are connected to the drive motors 15, 19 via the flexible couplings 13, 18.
, The influence of the vibration of the motors 15 and 19 can be reduced, and accurate measurement can be performed. Further, the main body surface plate 101 and the other surface surfaces 102 and 103 are connected to the concrete base 10 via an anti-vibration member such as an elastic member such as rubber.
If the structure is installed on the ground, the influence of the ground vibration can be eliminated.

FIG. 8 shows the configuration of the load sensor unit 30.
The load sensor unit 30 includes two mounting plates 3 facing each other.
1 and 32, and a high-sensitivity load sensor 33 sandwiched between the mounting plates 31 and 32. Mounting plates 31, 32
Are fixed to the transmission casing mounting surface 11 and the device mounting surface 5 with bolts 30, respectively, as shown in FIG.

As the load sensor 33, any sensor can be used, but a piezoelectric sensor is preferable. In this embodiment, a quartz-type force transducer, a three-component force transducer (Model 9251A) manufactured by Nippon Kistler Co., Ltd. is used. A quartz force transducer was used. This three-component force transducer consists of two steel discs and a quartz ring sandwiched between them, the quartz ring being made of several quartz discs sensitive to shear forces. Since the crystal axis of the quartz disk is oriented in the tangential direction of the ring, a charge proportional to the applied torque is accurately generated. The sensor is housed in a stainless steel case, and a connection cable is attached. This piezoelectric sensor can measure a dynamic or quasi-static force acting in an arbitrary direction as an orthogonal three-component force.

The piezoelectric sensor 33 has a through hole 35 formed at the center thereof, and two mounting plates 31 and 32 opposed to each other.
And pre-loaded with a pre-load bolt 36. Therefore, the piezoelectric sensor 33
Is capable of measuring a dynamic or quasi-static force acting around the axis of the sensor 33 as an orthogonal three-component force.

In this embodiment, two mounting plates 31, 32
As shown in FIG. 3, a center hole 37 is provided at the center of the input shaft of the transmission, and a plurality of holes are formed around the center hole 37 on the same circumference. In this embodiment, four holes are provided (FIG. 3).
Alternatively, three (FIG. 4) piezoelectric sensors 33 are arranged.

The measuring apparatus of the present invention having the above-described configuration will be further described based on test examples.

(Test Example 1) FIGS. 2 to 4 show test examples in which a drag torque performance test and a vibration measurement of an automobile transmission are performed using the measuring device according to the present invention. In FIG. 2, the input-side equivalent inertial body 16, the electromagnetic clutch 17, and the flexible coupling 1 described above are used.
8 and the input side motor 19 are omitted.

In Test Example 1, the transmission 10 is rotated by the output side motor 15 which is a basic element, and at various shift positions, the torque characteristics at that time,
The radial vibration (Fz) is measured.

In the load sensor section 30, four piezoelectric sensors 33 are opposed to each other in the vertical and horizontal directions. That is, each piezoelectric sensor 33 is connected to the transmission 1
It is arranged at a position equidistant in the radial direction from the center axis of 0 (that is, the power transmission axis), that is, on the same circumference. With this configuration, measurement accuracy can be improved.

Each piezoelectric sensor 33 has a circumferential component force (F
y) is generated, and the signal is generated by the charge amplifier 5
Send to 1. The charge amplifier 51 includes the piezoelectric sensor 33
Generates a voltage output in proportion to the charge signal from the CPU, and transmits this output signal to the arithmetic unit 52. The arithmetic unit 52 calculates the torque reaction force (M
x), the thrust force (Fx) and the radial force (Fz) are calculated, and the calculation results are transmitted to the data processing device 53. The data processing device 53 can predict vertical and radial vibration components of the device,
The judgment and evaluation device 54 judges and analyzes the low-speed drag torque performance of the transmission.

(Test Example 2) FIGS. 5 to 7 show another test example in the case of performing a vibration and noise performance test of an automobile transmission using the measuring apparatus according to the present invention.

In Test Example 2, the input side equivalent inertia body 16, the electromagnetic clutch 17, the flexible coupling 18, and the input side motor 19 are also used.

In this test example, basically, the transmission 10 is rotated by the input side motor 19, the load is applied to the transmission 10 by the output side motor 15, and at various shift positions, vibration and torque generated at the time are respectively. Measure the characteristics.

The load sensor section 30 has three piezoelectric sensors 33, that is, one sensor is located upward, and the other two sensors are spaced apart by an angle of 120 degrees on both sides of the upper sensor. Placed in the position. Each piezoelectric sensor 33 generates a charge signal of a thrust component (Fx), a circumferential component (Fy), and a radial component (Fz), and transmits the signals to the charge amplifier 51. The charge amplifier 51 generates a voltage output proportional to the charge signal from the piezoelectric sensor 33, and transmits this output signal to the arithmetic unit 52. The calculation device 52 calculates the torque reaction force (Mx, My, Mz) of the mounting surface 11 of the transmission 10, the thrust component (Fx), and the radial component (Fz, Fy). From these calculation results, vibration components in the vertical and radial directions can be predicted by the data processing device 53, and the performance of components inside the transmission, the assembly state, and the like can be determined by the determination evaluation device 54.

Test apparatus 1 for power transmission system equipment according to the present invention
Is not limited to the tests shown in Test Examples 1 and 2 above, and a performance test according to the number of revolutions can be performed by adjusting the number of revolutions of the input side and / or output side motors 15 and 19. . Further, by installing the input side and output side motors 15 and 19 on both sides of the transmission 10 and controlling the driving thereof, a performance test can be performed when a brake is applied.

According to the present invention, even if the transmission 10 to be tested changes, the mounting state of the load sensor unit 30 with respect to the transmission mounting jig 2 does not change. Mounting plate 3
The sensors 1 and 32 are installed under constant conditions, and stable, highly reliable, and highly accurate measurement is possible. Also, load sensor 3
A piezoelectric sensor such as the above-mentioned quartz-type piezoelectric torque converter as No. 3 has higher rigidity than conventional strain-type torque meters, and does not affect the power transmission system equipment to be tested.

[0039]

As described above, the test apparatus for judging and analyzing the performance of the power transmission device according to the present invention is a device having a vertical mounting surface for mounting the power transmission device to be tested. A device mounting jig having a support portion, and an output side and / or an input side transmission shaft of a power transmission system device are driven through a flexible coupling to drive an output side and / or an input side transmission shaft of the power transmission system device. And a load sensor unit disposed between the power transmission system device mounting surface and the device support unit mounting surface. The load sensor unit includes a power transmission system device mounting surface and a device support unit. A mounting plate fixed to the mounting surface and opposed to each other, and a plurality of load sensors sandwiched between the mounting plates and arranged at a position equidistant from the center of the transmission shaft of the power transmission device; Signal from sensor , Which is operated by the arithmetic processing unit to judge and analyze the performance of the power transmission system device. (1) If necessary, a performance test in which a drive motor is connected to the output side and the input side is also performed. Therefore, it is possible to accurately test the performance such as vibration and noise of a power transmission system device such as a transmission and a differential gear having a power transmission shaft on the output side and the input side. (2) Only the vibration of the power transmission system equipment such as the transmission and the differential gear can be accurately measured without being affected by the vibration of the drive motor connected to the output side and the input side. (3) It is not necessary to re-install the sensor every time a power transmission system device such as a transmission or a differential gear to be subjected to a test is changed, and the device can be used with good workability in a production process and the like. And the like.

[Brief description of the drawings]

FIG. 1 is a diagram showing an entire configuration of an embodiment of a power transmission system device test apparatus according to the present invention.

FIG. 2 is a diagram for explaining a first test example using a test apparatus according to the present invention.

FIG. 3 is a sectional view taken along line AA of FIG. 2;

FIG. 4 is a flowchart of data processing from signal detection by a load sensor to performance evaluation.

FIG. 5 is a diagram for explaining a second test example using the test apparatus according to the present invention.

FIG. 6 is a sectional view taken along line AA of FIG. 5;

FIG. 7 is a flowchart of data processing from signal detection by a load sensor to performance judgment evaluation.

FIG. 8 is a cross-sectional view illustrating a configuration of a load sensor unit.

FIG. 9 is a schematic overall configuration diagram of a conventional test apparatus.

FIG. 10 is a schematic overall configuration diagram of a conventional test apparatus.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Power transmission system test apparatus 2 Equipment mounting jig 4 Equipment support part 5 Mounting surface 10 Transmission (power transmission system equipment) 11 Input side casing mounting surface 12 Connection joint 13, 18 Flexible coupling 15 Output side motor 19 Input side Motor 30 Load sensor unit 31, 32 Mounting plate 33 Load sensor

Claims (8)

[Claims] 1. A test apparatus for determining and analyzing the performance of a power transmission system device, comprising: a device mounting jig having a device support portion having a vertical mounting surface for mounting a power transmission system device to be tested; A drive motor connected to an output side and / or an input side transmission shaft of the power transmission system device via a flexible coupling to drive an output side and / or an input side transmission shaft of the power transmission system device; A load sensor unit disposed between the power transmission system device mounting surface and the device support unit mounting surface, wherein the load sensor unit is mounted on the power transmission system device mounting surface and the device support unit mounting surface. A mounting plate, which is fixedly opposed to each other, and a plurality of load sensors which are sandwiched between the mounting plates and are arranged at an equal distance from a center of a transmission shaft of the power transmission device; C Signal from the sub, the performance of the determination and the power transmission system equipment testing apparatus and performs an analysis of the power transmission system equipment is calculated by the arithmetic processing unit. 2. The load sensor is a piezoelectric sensor,
3. The method according to claim 1, wherein three or four or more are arranged.
Test equipment for power transmission equipment. 3. The test apparatus according to claim 2, wherein the piezoelectric sensor is a quartz-type force transducer. 4. The apparatus according to claim 3, wherein said quartz type force converter is a one-component force converter. 5. The test apparatus according to claim 3, wherein the quartz type force converter is a three-component force converter. 6. The device mounting jig is attached to a main body platen installed on a concrete base, and the output side drive motor and / or the input side drive motor of the power transmission system device are connected to the main body surface plate. The test apparatus for a power transmission system device according to any one of claims 1 to 5, wherein the test apparatus is mounted on a separate driving side surface plate. 7. The table according to claim 6, wherein each of the bases is mounted on a concrete base via a vibration isolating member.
Test equipment for power transmission equipment. 8. The power transmission system device is a transmission or a differential gear, and measures performance by testing vibration and noise.
The test apparatus for a power transmission system device according to any one of the above.