JP2004184267A - Testing apparatus of power transmission mechanism - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a testing apparatus which can simulate and regenerate rotational fluctuations of a crankshaft, when an internal combustion engine is actually operated, and easily alter the period and the fluctuation width of the rotational fluctuations. <P>SOLUTION: The testing apparatus of power transmission mechanism T, equipped with a drive side rotating shaft Cr and a following side rotating shaft Cm, is provided with a rotating device M, which generates rotational drive capacity and a rotating input means RI for inputting rotation of the rotating device M into drive side rotating shaft Cr. The rotation input means RI is provided with a gear group H, having at least a gear MH installed on a rotating shaft Ms of the rotating device M and a gear RH installed on the drive side rotating shaft Cr. The gears MH, RH constitute the gear group H which transfers nonuniform rotational movement. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a power transmission mechanism test apparatus, and more particularly to a power transmission mechanism test apparatus capable of simulating and reproducing rotation fluctuation of a crankshaft when an internal combustion engine is actually operated.
[0002]
[Prior art]
In a relatively small vehicle such as a passenger car, a vehicle equipped with a rubber timing belt is widely used as a power transmission mechanism for transmitting rotation of a crankshaft of an internal combustion engine to another rotating shaft system such as a camshaft. Have been.
[0003]
Rubber timing belts have advantages such as lower noise, lighter weight and lower cost compared to metal timing chains. However, the timing belt made of rubber is inferior to the timing chain made of metal in terms of durability reliability, and thus various evaluation tests (such as durability tests) need to be performed to secure stable reliability in the market.
[0004]
When conducting an evaluation test of a power transmission mechanism of an internal combustion engine (including a timing belt, a pulley around which the belt is wound, and a rotating shaft connected to the pulley), it is necessary to actually operate the internal combustion engine to perform the test. Ideal. However, if the test is performed by actually operating the internal combustion engine, it is necessary to manage variations in the injection system on the internal combustion engine side (variations in fuel injection amount, etc.) and to control various parameters such as oil temperature, water temperature, and rotation speed. Sometimes it is impractical to manage.
[0005]
Therefore, in such a case, instead of operating the internal combustion engine, a simulated test is performed by inputting a rotational driving force to the crankshaft using a rotating device such as a motor. Such a simulation test apparatus is called a rig apparatus by those skilled in the art.
[0006]
The outline of a general rig device (test device) will be described with reference to FIGS. 7 and 8.
[0007]
FIG. 7 is a front view of the rig device, and FIG. 8 is a side view showing a power transmission mechanism to be tested.
[0008]
As shown, an internal combustion engine E is mounted on a test stand D.
[0009]
The power transmission mechanism T to be tested includes a crankshaft Cr of the internal combustion engine E, a rotating shaft other than the crankshaft Cr such as the camshaft Cm, an idle shaft A, and a hook between the rotating shafts Cr, Cm, and A. And the passed timing belt TV.
[0010]
More specifically, referring to FIG. 8, the timing belt TV includes a crank pulley CrP provided at one end (right end in FIG. 7) of a crankshaft Cr (drive-side rotation shaft) of the internal combustion engine E, A camshaft pulley CmP provided on a camshaft (driven side rotating shaft) for operating the intake and exhaust valves at an optimal timing, and a camshaft pulley CmP provided on a rotating shaft (driven side rotating shaft) for driving an oil pump. An oil pump pulley OP, a supply pump pulley SP provided on a rotating shaft (driven side rotating shaft) for driving a supply pump, and an idle pulley AP provided on an idle shaft A (driven side rotating shaft). Passed.
[0011]
The layout of these pulleys CrP, CmP, OP, SP, AP is shown as an example. Further, the idle pulley AP is not always necessary and may not be provided. Further, a tensioner for keeping the tension of the timing belt TV constant may be separately provided. In short, the number and the layout of the respective rotating shafts and the pulleys are variously changed depending on the type of the internal combustion engine E and the like, and are not limited to those illustrated. Further, in the present specification, the rotating shafts other than the crankshaft Cr, that is, each driven-side rotating shaft is also referred to as an auxiliary device driving etc. rotating shaft, and refers to each pulley provided on each supplementary driving etc. rotating shaft. It is also called a pulley for driving auxiliary equipment.
[0012]
Now, the rig device transmits and inputs a rotating device M that generates a rotational driving force instead of the internal combustion engine E, and a rotational driving force of the rotating device M to a crankshaft (drive-side rotating shaft) Cr of the internal combustion engine E. And rotation input means RI.
[0013]
The rotation device M is here an electric motor. The rotation input means RI includes a motor pulley MP provided on the rotation shaft Ms of the motor M, a rotation input pulley RP provided on the other end (left end in FIG. 7) of the crankshaft Cr, and the pulleys MP and RP. And a rotary input belt (here, a V-belt) RV bridged therebetween. The motor pulley MP and the rotary input pulley RP of the conventional rig device are general circular pulleys.
[0014]
When the motor M is driven, the rotational driving force is input to the crankshaft Cr and the crank pulley CrP connected thereto, and the rotational driving force is transmitted to each driven pulley CmP, OP, SP, AP via the timing belt TV. Is transmitted to. An evaluation test of the power transmission mechanism T is performed based on the rotation of the internal combustion engine E.
[0015]
When the power transmission mechanism T is tested, it is general to omit (remove) components other than the power transmission mechanism T in the internal combustion engine E, that is, the piston, the intake and exhaust valves, and the like. is there. In some cases, the test is performed by disposing only the rotating shaft, the pulley, and the timing belt TV (that is, only the power transmission mechanism T) without actually mounting the internal combustion engine E on the test stand D.
[0016]
[Patent Document 1]
JP 2000-338001 A [Patent Document 2]
JP 2000-338002 A
[Problems to be solved by the invention]
By the way, the conventional rig device has a problem that the rotation of the crankshaft Cr when the internal combustion engine E is actually operated cannot be accurately simulated / reproduced, and cannot be accurately evaluated.
[0018]
Explaining this, when the internal combustion engine E is actually operated, the rotation speed of the crankshaft Cr fluctuates. For example, when a certain cylinder of the internal combustion engine E is in a compression stroke, the rotation speed of the crankshaft Cr decreases, and conversely, in a combustion stroke, the rotation speed of the crankshaft Cr increases. Naturally, the load (tension) of the timing belt TV also changes with the rotation change of the crankshaft Cr. On the other hand, in the conventional rig device, the rotation speed of the motor M is constant, and the rotation speed of the crankshaft Cr does not change. Naturally, the tension of the timing belt TV hardly changes. When a test was performed using an internal combustion engine E having components (pistons, valves, etc.) other than the power transmission mechanism T, even if the rotation speed of the motor M was constant, air in the combustion chamber of each cylinder was Since compression is performed at predetermined intervals, some rotation fluctuation occurs. However, the fluctuation range is much smaller than when the internal combustion engine E is actually operated. This is because a rapid increase in the rotation speed of the crankshaft Cr due to combustion (explosion) of fuel when the internal combustion engine E is actually operated cannot be reproduced.
[0019]
Therefore, the conventional test apparatus cannot grasp the influence of the rotation fluctuation of the crankshaft Cr, and cannot perform an accurate evaluation. In addition, when a test for simply evaluating the period until the timing belt TV is damaged is performed, a load change (tension change) does not occur in the timing belt TV. Was prolonged.
[0020]
Therefore, as described in Patent Literature 1 and Patent Literature 2, a planetary gear mechanism is provided between a motor for inputting rotation and a power transmission mechanism to be tested, and the planetary gear mechanism inputs a signal from the motor. A test device for varying the rotation speed has been devised.
[0021]
However, this test apparatus requires a large-scale apparatus. Further, changing the period or the width of the rotation fluctuation requires replacing the entire planetary gear mechanism, which is very difficult. Since the cycle and the fluctuation range of the rotation fluctuation of the crankshaft of the internal combustion engine vary depending on various conditions and the type of the internal combustion engine, a test apparatus that can easily change the cycle and the fluctuation range of the rotation fluctuation has been desired.
[0022]
Therefore, an object of the present invention is to solve the above-mentioned problems, to simulate and reproduce rotation fluctuation of a crankshaft when an internal combustion engine is actually operated, and to easily and arbitrarily change the period and fluctuation width of the rotation fluctuation. An object of the present invention is to provide a test device for a power transmission mechanism.
[0023]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides a power supply comprising: a driving-side rotating shaft; at least one driven-side rotating shaft; and means for transmitting a rotational driving force of the driving-side rotating shaft to the driven-side rotating shaft. A test device for a transmission mechanism, comprising: a rotation device that generates a rotation driving force; and rotation input means for inputting the rotation driving force of the rotation device to the drive-side rotation shaft, wherein the rotation input device includes: A gear group having at least a gear provided on a rotating shaft of the rotating device and a gear provided on the driving-side rotating shaft, wherein the gears constituting the gear group transmit non-uniform rotational motion. It is.
[0024]
Here, the gear group is an elliptical gear provided on the rotating shaft of the rotating device, and an elliptical gear provided on the driving-side rotating shaft and meshing with a gear provided on the rotating shaft of the rotating device. And the gears may be provided on the rotation shaft and the drive-side rotation shaft of the rotating device so that the phases thereof differ from each other by 90 °.
[0025]
Further, the present invention is a test apparatus for a power transmission mechanism, comprising: a driving-side rotating shaft; at least one driven-side rotating shaft; and a means for transmitting a rotational driving force of the driving-side rotating shaft to the driven-side rotating shaft. A rotation device for generating a rotation driving force; and a rotation input device for inputting the rotation driving force of the rotation device to the drive-side rotation shaft, wherein the rotation input device includes a rotation shaft of the rotation device. And a pulley provided on each of the drive-side rotating shafts, and a belt member bridged between the pulleys, and one or both of the pulleys have a non-circular shape.
[0026]
Here, a pulley provided on the rotating shaft of the rotating device and a pulley provided on the driving-side rotating shaft have an elliptical shape, and the pulleys have a rotating shaft and a rotating shaft of the rotating device such that their phases are different from each other by 90 °. It may be provided on the drive-side rotating shaft.
[0027]
The drive-side rotating shaft of the power transmission mechanism is a crankshaft of the internal combustion engine, the driven-side rotating shaft is a rotating shaft for driving at least one auxiliary machine, and the rotational driving force of the driving-side rotating shaft is controlled by the driven shaft. The means for transmitting to the side rotation shaft is a bridge between the crank pulley provided on the crankshaft, the auxiliary drive pulley provided on the auxiliary drive rotation shaft, and the pulley between the crank pulley and the auxiliary drive pulley. The rotation device may be a motor, and the rotation input means may input a rotational driving force of the motor to the crankshaft.
[0028]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.
[0029]
The basic configuration of the test device of the power transmission mechanism of the present embodiment is the same as that of the rig device shown in FIG. Therefore, a test apparatus for a power transmission mechanism according to the present embodiment will be described with reference to FIGS. Note that the basic configuration of the test apparatus has been described in the section of “Prior Art” and will not be described.
[0030]
A feature of the present invention resides in a rotation input means RI for transmitting and inputting a rotational driving force of the rotating device M to a drive-side rotating shaft (here, a crankshaft Cr of the internal combustion engine E) of a power transmission mechanism T to be tested. .
[0031]
The rotation input means RI of the present embodiment will be described with reference to FIG.
[0032]
First, in the present embodiment, a servomotor that relatively easily controls a rotation speed, a rotation torque, and the like is used as the rotation device M that generates a rotation driving force (the rotation motor is not limited). The rotation speed of the servo motor is basically constant.
[0033]
The rotation input means RI includes a motor gear MH which is detachably attached to the rotation axis Ms of the servomotor M and is attached to the rotation axis Ms so as not to rotate relative to the rotation axis Ms, and a crankshaft (drive side rotation axis) of the power transmission mechanism T to be tested. 7) A gear group H including a rotation input gear RH detachably attached to the other end of Cr (the left end in FIG. 7) and attached to the crankshaft Cr so as not to rotate relatively. The motor gear MH and the rotation input gear RH mesh with each other.
[0034]
It should be noted that both gears MH and RH constituting the gear group H are non-circular. Thus, the gear group H transmits the rotational driving force generated by the servomotor M at a constant speed to the crankshaft Cr as unequal rotational movement.
[0035]
As shown in FIG. 1, the motor gear MH and the rotation input gear RH of the present embodiment are configured by elliptical gears. The motor gear MH and the rotation input gear RH have long diameter portions 1a, 1b and short diameter portions 2a, 2b alternately provided at 90 ° intervals in the circumferential direction.
[0036]
The motor gear MH and the rotation input gear RH are mounted on the motor rotation shaft Ms and the crankshaft Cr such that the phases thereof are different from each other by approximately 90 °. That is, assuming that a line Ch connecting the centers of the two gears MH and RH is a gear center line, and the extending directions of the motor gear MH and the long diameter portions 1a and 1b of the rotation input gear RH are the longitudinal directions of the gears, When one of the RHs is located orthogonal to the gear center line Ch, the other is located parallel to the gear center line Ch.
[0037]
Next, the operation of the present embodiment will be described with reference to FIG. In FIG. 2, the teeth of both gears MH and RH are omitted for convenience.
[0038]
First, as shown in FIG. 2A, it is assumed that a relatively short point A on the circumference of the motor gear MH and a relatively long point B on the circumference of the rotary input gear RH mesh with each other. . From this state, as shown in FIG. 2B, it is assumed that the motor gear MH has rotated by an angle α (= 90 °) in the direction of the arrow.
[0039]
At this time, the rotation angle β of the rotation input gear RH meshing with the motor gear MH becomes smaller than 90 °. This is because the rotation angle of the two gears MH and RH with respect to the movement distance of the circumference differs depending on the phase of the meshing portion (in other words, the movement distance of the circumference with respect to the rotation angle differs depending on the phase). Since the rotation angle with respect to the circumferential movement distance decreases as the diameter of the meshing portion increases, in this case, the rotation angle of the rotation input gear RH is smaller than that of the motor gear MH at the same movement distance. When the motor gear MH rotates by the angle α and its circumference moves by the distance L1, the circumference of the rotation input gear RH also moves by the same distance L1, and the rotation angle β of the rotation input gear RH at this time is α Smaller than. That is, the rotation angle at the same time is smaller for the rotation input gear RH than for the motor gear MH. In other words, the rotational driving force of the servomotor M is reduced and transmitted to and input to the rotation input gear RH and the crankshaft Cr.
[0040]
Next, it is assumed that the motor gear MH is further rotated by an angle α (= 90 °) in the direction of the arrow as shown in FIG. 2C from the state of FIG. 2B.
[0041]
In this case, since the meshing portion of the motor gear MH passes through the long diameter portion 1a and the meshing portion of the rotation input gear RH passes through the short diameter portion 2b, the rotation angle with respect to the circumferential movement distance is smaller than that of the motor gear MH. The gear RH is larger. Therefore, the rotation angle β of the rotation input gear RH when the motor gear MH rotates α is larger than α. Therefore, the rotation angle of the rotation input gear RH is larger than that of the motor gear MH at the same time. That is, the rotational driving force of the servo motor M is accelerated and transmitted to and input to the crankshaft Cr.
[0042]
As described above, in the present embodiment, each time the motor gear MH rotates 90 °, the rotational driving force input to the rotation input gear RH and the crankshaft Cr repeats acceleration and deceleration. That is, every time the crankshaft Cr makes one rotation, two times of acceleration / deceleration (rotational fluctuation) occur continuously. This is the same as, for example, the rotation fluctuation of the crankshaft Cr when operating a 4-cycle, 4-cylinder internal combustion engine.
[0043]
Here, the fluctuation width of the rotation fluctuation generated in the crankshaft Cr changes the motor gear MH and the rotation input gear RH to those having different shapes (such as the radial lengths of the long diameter portions 1a and 1b and the short diameter portions 2a and 2b). Can be changed. Further, the cycle of the rotation fluctuation can be changed by changing the rotation speed of the rotation device M and the shapes of the motor gear MH and the rotation input gear RH (the number of the long diameter portions 1a, 1b and the short diameter portions 2a, 2b, etc.).
[0044]
For example, as shown in FIG. 3, if a trilobal gear having three long-diameter portions 1a and 1b and three short-diameter portions 2a and 2b is used as the motor gear MH and the rotation input gear RH, the crankshaft Cr becomes Three rotation fluctuations occur for each rotation, and rotation fluctuations of the crankshaft Cr of the four-cycle six-cylinder internal combustion engine can be reproduced. In this case, as shown in the figure, the two gears MH and RH are attached to the motor rotation shaft Ms and the crankshaft Cr such that their phases are the same.
[0045]
As shown in FIG. 4, if a four-leaf gear having four long-diameter portions 1a and 1b and four short-diameter portions 2a and 2b is used, the rotational fluctuation of the crankshaft Cr of a four-cycle eight-cylinder internal combustion engine can be achieved. Can be reproduced. In this case, the two gears MH and RH are attached to the motor rotation shaft Ms and the crankshaft Cr such that the phases thereof are different from each other by about 45 °.
[0046]
The rotational fluctuation of the crankshaft Cr of the internal combustion engine E in which the power transmission mechanism T to be tested is provided is determined in advance by a test or the like, and the shapes of the gears MH and RH and the rotational speed of the servomotor M are determined according to the result. Is set, the rotation fluctuation of the crankshaft Cr when the internal combustion engine E is actually operated can be accurately simulated and reproduced.
[0047]
As described above, the test apparatus for the power transmission mechanism of the present embodiment enables accurate evaluation including the influence of the rotation fluctuation of the crankshaft Cr, and can obtain stable reliability in the market. Further, since a load (tension) change occurs in the timing belt TV with the rotation change of the crankshaft Cr, the test period can be shortened in a test for evaluating a period until the timing belt TV is broken.
[0048]
Further, in the present embodiment, since the rotating device M is the servomotor M, by controlling the rotating speed, the cycle of the rotation fluctuation generated on the crankshaft Cr can be easily changed. Further, since the motor gear MH and the rotation input gear RH are detachably attached to the motor rotation shaft Ms and the crankshaft Cr, the motor gear MH and the rotation input gear RH can be easily exchanged for those having different shapes, and the crankshaft can be easily replaced. It is possible to easily change the cycle and the width of the rotation fluctuation generated in Cr.
[0049]
Furthermore, the test apparatus for the power transmission mechanism of the present embodiment differs from the existing (conventional) rig apparatus only in the configuration of the rotation input means RI, and therefore can be easily manufactured by diverting the existing apparatus. it can. In addition, the structure is simple and can be provided at low cost.
[0050]
The number of gears constituting the gear group H is not limited to two, and an idle gear may be separately provided between the rotation input gear RH and the motor gear MH.
[0051]
Further, the gears constituting the gear group H are not necessarily limited to those having a non-circular shape. For example, as shown in FIG. 5, by providing the rotation center of the circular gear eccentrically from the gear center C, it is also possible to transmit the non-uniform rotational movement to the crankshaft Cr.
[0052]
Next, another embodiment of the present invention will be described with reference to FIG.
[0053]
This embodiment is different from the embodiment shown in FIG. 1 only in the configuration of the rotation input means.
[0054]
The rotation input means RI ′ of this form includes a motor pulley MP detachably attached to the rotation shaft Ms of the servomotor M and attached to the rotation shaft Ms so as not to rotate relative to the rotation shaft Ms, and a crankshaft of the power transmission mechanism T to be tested ( The rotation input pulley RP is detachably attached to the other end (the left end in FIG. 7) of the driving-side rotation shaft Cr and is attached to the crankshaft Cr so as not to rotate relative to the rotation input pulley RP, and the motor pulley MP and the rotation input pulley RP. And a belt member (for example, a V-belt) RV bridged therebetween.
[0055]
It should be noted that the motor pulley MP and the rotary input pulley RP have non-circular shapes, as is apparent from the figure. As a result, in the rotation input to the crankshaft Cr, a rotation fluctuation equivalent to the rotation fluctuation when the internal combustion engine E is actually operated occurs.
[0056]
In the present embodiment, the motor pulley MP and the rotary input pulley RP are each formed in an elliptical shape. The motor pulley MP and the rotary input pulley RP have long diameter portions 3a, 3b and short diameter portions 4a, 4b alternately provided at 90 ° intervals in the circumferential direction.
[0057]
Further, the motor pulley MP and the rotation input pulley RP are attached to the motor rotation shaft Ms and the crankshaft Cr such that their phases are different from each other by 90 °. That is, assuming that a line Cp passing between the centers of both pulleys MP and RP is a pulley center line, and the extending direction of the motor pulley MP and the long diameter portions 3a and 3b of the rotary input pulley RP is the longitudinal direction of each pulley, When one of the RPs is located orthogonal to the pulley center line Cp, the other is located parallel to the pulley center line Cp. It is preferable that the pulleys MP and RP are arranged as close as possible.
[0058]
The V-belt RV is crossed over the motor pulley MP and the rotation input pulley RP.
[0059]
Also in this embodiment, two accelerations / decelerations (rotational fluctuations) occur each time the crankshaft Cr makes one rotation, as in the embodiment of FIG. As described above, this is equivalent to the rotational fluctuation of the crankshaft Cr of, for example, a four-cycle four-cylinder internal combustion engine.
[0060]
The cycle of the rotation fluctuation generated in the crankshaft Cr can be easily changed by changing the rotation speed of the rotation device M or changing the motor pulley MP and the rotation input pulley RP to ones having different shapes.
[0061]
In addition, the fluctuation width of the rotation fluctuation generated in the crankshaft Cr is changed to the motor pulley MP and the rotation input pulley RP having different shapes (particularly, the radial lengths of the long diameter portions 3a and 3b and the short diameter portions 4a and 4b). Can be changed.
[0062]
In the illustrated example, both the motor pulley MP and the rotary input pulley RP have a non-circular shape, but only one of the pulleys MP and RP may have a non-circular shape. In this case, it is necessary to separately provide a tensioner so that the non-circular pulley and the belt member RV can always appropriately contact each other.
[0063]
Here, as described in the section of “Prior Art”, when a component (such as a piston or a valve) other than the power transmission mechanism T of the internal combustion engine E is mounted and the test is performed, the air in the combustion chamber of the internal combustion engine E is tested. For example, the rotation of the crankshaft Cr is slightly changed because the piston is compressed by the piston. Therefore, it is necessary to set the timing of the rotation fluctuation given to the crankshaft Cr by the rotation input means RI, RI 'so as to match the rotation fluctuation of the crankshaft Cr generated on the internal combustion engine E side. This is done by adjusting the mounting phase of each gear MH, RH or each pulley MP, RP.
[0064]
So far, the test apparatus has been described as performing an evaluation test of a power transmission mechanism using a timing belt. However, the present invention is not limited in this respect, and a power transmission mechanism using a timing chain and a transmission for a vehicle are described. Alternatively, it can be used for evaluation tests of other power transmission mechanisms such as a power transmission mechanism applied to a device other than a vehicle.
[0065]
【The invention's effect】
In short, according to the present invention, the following excellent effects are exhibited.
[0066]
1) The rotation fluctuation of the crankshaft of the internal combustion engine can be accurately simulated and reproduced.
[0067]
2) The fluctuation period and fluctuation width of the rotation speed of the crankshaft can be easily and arbitrarily changed.
[Brief description of the drawings]
FIG. 1 is a schematic view showing a rotation input unit of a test device for a power transmission mechanism according to an embodiment of the present invention.
FIG. 2A is a diagram for explaining the operation of the rotation input means of FIG. 1;
FIG. 2B is a diagram illustrating the operation of the rotation input unit of FIG. 1.
FIG. 2C is a diagram for explaining the operation of the rotation input means of FIG.
FIG. 3 is a schematic view showing a rotation input unit of a test device for a power transmission mechanism according to another embodiment of the present invention.
FIG. 4 is a schematic view showing a rotation input unit of a test device for a power transmission mechanism according to another embodiment of the present invention.
FIG. 5 is a schematic view showing a rotation input unit of a test device for a power transmission mechanism according to another embodiment of the present invention.
FIG. 6 is a schematic diagram showing a rotation input unit of a test device for a power transmission mechanism according to another embodiment of the present invention.
FIG. 7 is a schematic front view of the rig device.
FIG. 8 is a schematic diagram showing a power transmission mechanism of the internal combustion engine.
[Explanation of symbols]
Cr Crankshaft E Internal combustion engine M Rotating device (servo motor)
MH Motor gear MP Motor pulley H Gear group RH Rotation input gear RI Rotation input means RP Rotation input pulley RV Belt member TV Timing belt

Claims (5)

A drive-side rotating shaft, at least one driven-side rotating shaft, and a test device for a power transmission mechanism, comprising: means for transmitting a rotational driving force of the driving-side rotating shaft to the driven-side rotating shaft;
A rotating device for generating a rotational driving force,
A rotation input unit for inputting a rotation driving force of the rotation device to the drive-side rotation shaft,
The rotation input means includes a gear group having at least a gear provided on a rotation shaft of the rotation device and a gear provided on the drive-side rotation shaft, and the gears constituting the gear group have non-uniform rotational motion. A test device for a power transmission mechanism, comprising: The gear group is an elliptical gear provided on the rotating shaft of the rotating device, and an elliptical gear provided on the driving-side rotating shaft and meshing with the gear provided on the rotating shaft of the rotating device. The power transmission mechanism testing device according to claim 1, wherein the gears are provided on the rotation shaft and the drive-side rotation shaft of the rotating device so that the phases of the gears are different from each other by 90 °. A drive-side rotating shaft, at least one driven-side rotating shaft, and a test device for a power transmission mechanism, comprising: means for transmitting a rotational driving force of the driving-side rotating shaft to the driven-side rotating shaft;
A rotating device for generating a rotational driving force,
A rotation input unit for inputting a rotation driving force of the rotation device to the drive-side rotation shaft,
The rotation input means includes a pulley provided on each of the rotation shaft of the rotation device and the drive-side rotation shaft, and a belt member bridged between the pulleys, and either one of the pulleys or a combination thereof. A power transmission mechanism testing device, characterized in that both are non-circular. The pulley provided on the rotating shaft of the rotating device and the pulley provided on the driving-side rotating shaft have an elliptical shape. The test device for a power transmission mechanism according to claim 3, which is provided on a shaft. The drive-side rotation shaft of the power transmission mechanism is a crankshaft of an internal combustion engine, the driven-side rotation shaft is a rotation shaft for driving at least one auxiliary device, and the rotational drive force of the drive-side rotation shaft is transmitted to the driven-side rotation shaft. The means for transmitting to the shaft is provided between the crank pulley provided on the crankshaft, the auxiliary drive pulley provided on the auxiliary drive rotary shaft, and the pulley provided between the crank pulley and the auxiliary drive pulley. With a timing belt,
The test apparatus for a power transmission mechanism according to any one of claims 1 to 4, wherein the rotation device is a motor, and the rotation input means inputs a rotation driving force of the motor to the crankshaft.

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