JPH06317501A - Power circulation type gear testing method and device - Google Patents

Abstract

PURPOSE:To change the load operated on the engagement part of each gear during power circulation type gear test. CONSTITUTION:A sun gear 51 under test of a gear device 26 under test and a follower sun gear 48 of a follower gear device 37 are joined, an epicyclic frame 31 under test of the gear device 26 under test and a follower epicyclic frame 42 of the follower gear device 37 are joined, an inner tooth gear 28 under test of the gear device 26 under test is constrained so that it does not rotate n periphery direction, and then a follower inner tooth gear 39 is displaced in the periphery direction, thus operating a torsion moment corresponding to the amount of displacement of the follower inner tooth gear 39 on the rotary torque transmission system of the gear device 26 under test and the follower gear device 37 and operating a load corresponding to the amount of displacement of the follower inner tooth gear 39 on the engagement part of each gear due to the counterforce of the torsion moment operated on each member.

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 method and a power circulation type gear testing device used in the method.

[0002]

2. Description of the Related Art Conventionally, a power circulation type gear test using two sets of gear units of the same type has been conducted as a means for evaluating the durability of a meshing portion of a gear used in a speed reducer or the like.

The principle of the power circulation type gear test will be described below with reference to FIG.

Reference numeral 2 is a test gear device, and the test gear device 2 is a test housing 3 erected on one end A side of the substrate 1.
A test power transmission shaft 6 extending substantially horizontally and pivotally supported on the upper part of the test housing 3 via bearings 4 and 5, and provided on the other end B side end of the test power transmission shaft 6. A power transmission flange 7, a test torque load shaft 10 that extends substantially parallel to a test power transmission shaft 6 pivotally supported at the bottom of the test housing 3 via bearings 8 and 9, and the test sample. Torque load shaft 10
Torque flange 11 provided on the other end B side end of the
A first test gear 12 (gear to be tested for durability of the meshing portion) arranged in the test housing 3 and fixed to the test power transmission shaft 6; and the test housing 3 A second test gear 13 (gear to be tested for durability of the meshing portion), which is disposed inside and is fixed to the test torque load shaft 10 so as to mesh with the first test gear 12. I have it.

Reference numeral 14 is a driven gear device. The driven gear device 14 is pivoted above the driven housing 15 via a bearing housing 15 standing on the other end B side of the substrate 1 and bearings 16 and 17. A driven power transmission shaft 18 extending substantially coaxially with the supported test power transmission shaft 6, and the driven power transmission shaft 18
A power transmission flange 19 provided at one end A side end portion of the power transmission flange 7 so as to face the power transmission flange 7, and bearings 20 and 2.
1, a driven torque load shaft 22 pivotally supported on the lower portion of the driven housing 15 and extending substantially coaxially with the sample torque load shaft 10, and the torque load at one end A side end of the driven torque load shaft 22. A torque load flange 23 provided so as to face the flange 11, and the driven housing 1
5, a first driven gear 24 fixed to the driven power transmission shaft 18 (same shape as the first test gear 12)
And a second driven gear 25 (the second test gear 13 which is disposed in the driven housing 15 and fixed to the driven torque load shaft 22 so as to mesh with the first driven gear 24).
And the same shape).

[0006] The power transmission flange 7 of the test gear device 2
The driven gear device 14 and the power transmission flange 19 of the driven gear device 14 are always connected by a mechanical connecting means such as a bolt.

A durability test (a power circulation type gear test) of the meshing portion of the first test gear 12 and the second test gear 13 is performed by the test gear device 2 and the driven gear device 14 having the above-described structure. When performing the test, the torsion torque is applied to the driven torque load shaft 22 while restraining the rotation of the test torque load shaft 10 (or the torque of the test torque load shaft 10 is twisted while restraining the rotation of the driven torque load shaft 22). When both torque load flanges 11 and 23 are connected to each other by a mechanical connecting means such as a bolt so as to give a moment), the second test gear 13, the first test gear 12 and the second driven gear 25, a torsion moment acts on the test power transmission shaft 6 and the driven power transmission shaft 18 via the first driven gear 24, and the reaction force against the torsion moment of each of the above-mentioned shafts causes the first test gear 1 to move. When meshing portion between the second test gear 13, and the first driven gear 24 and the second driven gear 25
The load acts on the meshing part with.

The first test gear 12 and the second test gear 13
If a load is applied to the meshing portion with the driven power transmission shaft 18, the driven power transmission shaft 18 is rotated by a drive device (not shown), and the rotational force of the drive device is driven by the driven power transmission shaft 18 and the test power transmission shaft 6 And the rotational force is transmitted to the first test gear 12 via the driven power transmission shaft 18, the first driven gear 24, the second driven gear 25, the driven torque load shaft 22, and the test torque load. Second test gear 1 via shaft 10
3 to the first test gear 12 and the second test gear 13
And are rotationally driven with a load acting on the meshing portion.

In this way, after the first test gear 12 and the second test gear 13 are rotated for a predetermined time with the load acting on the meshing parts, the meshing parts of the respective gears are rotated. The deformation condition is investigated and the first test gear 12 and the second test gear 13
To evaluate the durability of.

FIG. 3 assumes a case where a power circulation type gear test is carried out using two sets of planetary gear devices. 26 is a test gear device, and the test gear device 26 is mounted on the substrate 1. Hollow fixed test housing 27, test internal gear 28 fixed in the test housing 27, and bearings 29, 3 so as to be coaxial with the test internal gear 28.
An annular test planetary frame 31 which is rotatably supported in the test housing 27 by way of zero, and the test internal gear 28.
Bearings 34, 3 so as to be coaxial with the plurality of test planetary gears 33 pivotally supported on the test planetary frame 31 via bearings 32 so as to mesh with
A test power transmission shaft 36 pivotally supported on the test planetary frame 31 via 5, and a test sun gear 51 fixed to the test power transmission shaft 36 so as to mesh with each of the test planetary gears 33. Is equipped with.

Reference numeral 37 is a driven gear device, and the driven gear device 37 is a hollow driven housing 38 fixed to the substrate 1 so as to face the sample housing 27.
A driven internal gear 39 (having the same shape as the sample internal gear 28) fixed in the driven housing 38 so as to be coaxial with the sample internal gear 28; and the driven internal gear 39, An annular driven planetary frame 42, which is rotatably supported in the driven housing 38 via bearings 40 and 41 so as to be coaxial, and bearings 43 so as to mesh with the driven internal gear 39, respectively. A plurality of driven planet gears 44 (having the same shape as the sample planetary gear 33) pivotally supported by the driven planetary frame 42, and driven by bearings 45, 46 so as to be coaxial with the driven internal gear 39. The driven power transmission shaft 47 pivotally supported by the planetary frame 42 and the driven sun gear 48 fixed to the driven power transmission shaft 47 so as to mesh with the driven planetary gears 44 (same shape as the test sun gear 37). It has and.

The test power transmission shaft 3 of the test gear device 26
6 and the driven power transmission shaft 47 of the driven gear device 37 are connected by a mechanical connecting means such as a bolt, and the driven power transmission shaft 47 is connected to a drive device (not shown).

Reference numeral 49 is a hollow test connecting member mounted coaxially with the test power transmission shaft 36 at the end of the test planet frame 31 facing the driven gear device, and 50 is the test gear device of the driven planet frame 42. It is a hollow driven connecting member coaxially attached to the driven power transmission shaft 47 at the opposite end, and the sample connecting member 49 and the driven connecting member 50 are connected to each other by a mechanical connecting means such as a bolt. .

In the above-mentioned device, when the driven power transmission shaft 47 is rotated by a driving device (not shown), the driven sun gears 48 rotate, and the driven planetary gears 44 rotate in directions opposite to the rotational direction of the driven sun gears 48. While being driven by the driven sun gear 48, the driven sun gear 48 moves in the same direction as the driven sun gear 48 while being guided by the driven internal gear 39, and the driven planetary gears 44 cause the driven planetary frame 42 to move. It rotates in the same direction as the rotation direction of the gear 48.

Further, the rotation of the driven power transmission shaft 47 is transmitted to the test power transmission shaft 36, the test sun gear 51 rotates by the test power transmission shaft 36, and each of the test planet gears 33 causes the test sun gear 33 to rotate. While rotating in the direction opposite to the rotation direction of the gear 51,
The test sun gear 51 is moved in the same direction as the rotation direction of the test sun gear while being guided by the test internal gear 28, and the test planetary gears 31 move to move the test planetary frame 31 to the driven sun gear. It rotates in the same direction as the direction of rotation of 51.

At this time, the rotational torque of the driven planetary frame 42 is transferred to the sample planetary frame 31 via the driven connecting member 50 and the sampled connecting member 49, and the rotational torque of the sampled planetary frame 31 is measured to the sampled connecting member 49. , The driven planetary frame 4 via the driven connecting member 50.
2 are transmitted to each other.

By the test gear device 26 and the driven gear device 37 having the above-described structure, the meshing portion of the test internal gear 28 and the test planetary gear 33, and the test planetary gear 33 and the test sun gear 51. When a durability test (power circulation type gear test) of the meshing portion is performed, the connection between the test connection member 49 and the driven connection member 50 is released, and the rotation of the test connection member 49 is restrained while the driven connection member 49 is restrained. A torsion moment is applied to 50 (or a torsion moment is applied to the test connecting member 49 while restraining the rotation of the driven connecting member 50), and the test connecting member 49 and the driven connecting member 50 are again connected. When connected, the torsional moment applied to the driven connecting member 50 is transmitted to the driven planetary frame 42, each driven planetary gear 44, the driven sun gear 48, and the driven power transmission shaft 47, and the test connecting member 49 and the sample are also tested. Star frame 31, each test trial play star gear 3
3, the test sun gear 51, the test power transmission shaft 36, the meshing portion of the test sun gear 51 and each test planetary gear 33 by the reaction force of the torsional moment acting on each of these members, The meshing part between each sample planetary gear 33 and the sample internal gear 28, the meshing part between the driven sun gear 48 and each slave planetary gear 44, the meshing between each slave planetary gear 44 and the slave internal gear 39 A load acts on each of the parts.

If a load is applied to the meshing portion between the test sun gear 51 and each test planetary gear 33 and the meshing portion between each test planetary gear 33 and the test internal tooth gear 28, The driven power transmission shaft 47 is rotated by a driving device (not shown), and both the test gear device 26 and the driven gear device 37 are rotationally driven in a state in which a load acts on the meshing portion of each gear.

In this manner, the test sun gear 51 and the test planetary gears 33, and the test planetary gears 33 and the test internal tooth gears 28 are applied for a predetermined time with a load acting on their meshing portions. After the rotation, the deformation state of the meshing portion of each gear is investigated to evaluate the durability of the test sun gear 51, the test planetary gear 33, and the test internal gear 28.

[0020]

However, when the power circulation type gear test is performed by the test gear device 26 and the driven gear device 37 shown in FIG. 3, the test internal gear 28 and the test planetary gear 33 are In order to change the loads acting on the meshing part, the meshing part of the test planetary gear 33 and the meshing part of the test sun gear 51, the test gear device 26 and the driven gear device 37 are stopped and After disconnecting the connection between the test connecting member 49 and the driven connecting member 50 and adjusting the torsional moment applied to the driven connecting member 50 (or the sample connecting member 49), the sample connecting member 49 and the driven connecting member 50 are again adjusted. It is necessary to connect and, and the power circulation type gear test cannot be efficiently performed.

On the other hand, the test power transmission shaft 36 and the driven power transmission shaft 47 shown in FIG. 3 are connected via a fluid pressure type torque load means such as a torque hinge, and the respective meshes are made by the fluid pressure type torque load means. Although it is conceivable that the load acting on the parts can be adjusted, fluid pressure must always be applied to the fluid pressure type torque load means during the power circulation type gear test, and the fluid pressure type torque load means must be provided with the fluid pressure type torque load means. When the applied fluid pressure fluctuates, there is a problem that the load acting on each of the meshing portions may change.

The present invention has been made in view of the above circumstances, and an object of the present invention is to make it possible to change the load acting on the meshing portion of each gear during a power circulation gear test. .

[0023]

In order to achieve the above object, in the power circulation type gear testing method according to claim 1 of the present invention, the internal gear and the internal gear are positioned coaxially with each other. A planetary frame rotatably supported, a plurality of planetary gears pivotally supported by the planetary gear so as to mesh with the internal gear, and a planetary gear positioned coaxially with the internal gear and meshing with each planetary gear. Two sets of planetary gear devices having substantially the same shape, each of which has a sun gear rotatably supported by the planetary gear device, are arranged so that the sun gears of the planetary gear devices are located on substantially the same axis, and one planetary gear device is provided. The internal gear of the device is constrained from rotating in the circumferential direction, the sun gears of both planetary gear devices are connected to each other, the planetary frames of both planetary gear devices are connected to each other, and the other planetary gear device's Displace the internal gear in the circumferential direction and then use the planetary gears. Rotate the location of the sun gear.

Further, in the power circulation type gear testing device according to claim 2 of the present invention, the internal gear, the planetary frame rotatably supported so as to be coaxial with the internal gear, and A plurality of planetary gears pivotally supported by the planetary frame so as to mesh with the internal gears, and a sun gear that is positioned coaxially with the internal gears and rotatably supported so as to mesh with the planetary gears. The two sets of planetary gear units having substantially the same shape are arranged so that the sun gears of the respective planetary gear units are located on substantially the same axis, and the internal gear of one planetary gear unit is not rotated in the circumferential direction. The inner toothed gear of the other planetary gear device is supported so as to be displaceable in the circumferential direction, and the inner toothed gear of the other planetary gear device can be displaced in the circumferential direction and the displacement of the inner toothed gear can be changed. An internal tooth gear displacement mechanism that can be restrained is provided, and both planetary gears are Connecting the respective sun gears of location each other and has a structure linked together each planet carrier of said two planetary gear unit.

[0025]

In the power circulation type gear test method according to the first aspect of the present invention, two sets of planetary gear devices having substantially the same shape are arranged so that the respective sun gears are located on substantially the same line, and one planetary gear device is arranged. The internal gears of the gear unit are constrained from rotating in the circumferential direction, the sun gears of both planetary gear units are connected to each other, and the planetary frames of both planetary gear units are connected to each other, and the internal gears are arranged in the circumferential direction. When it is displaced to, the planetary gear of the other planetary gear device, the planetary frame, the planetary frame of the one planetary gear device, the planetary gears, the sun gear, the sun gear of the other planetary gear device, the planetary gears. A torsion moment acts on the rotating torque transmission system, and a reaction force of the torsion moment acting on each of these members causes a load to act on each meshing portion of the gears constituting the planetary gear devices.

In the power circulation type gear testing apparatus according to the second aspect of the present invention, the internal gear displacement mechanism displaces the internal gear of the other planetary gear device in the circumferential direction and restrains the displacement of the internal gear. Then, the planetary gears of the other planetary gear device, the planetary frame, the planetary frame of the one planetary gear device, each planetary gear, the sun gear, the sun gear of the other planetary gear device, and the rotational torque composed of each of the planetary gears. A twisting moment acts on the transmission system, and a reaction force of the twisting moment acting on each of these members causes a load to act on each of the meshing portions of the gears forming the two planetary gear devices.

Further, in any of the power circulation type gear test method according to the first aspect of the present invention and the power circulation type gear test device according to the second aspect of the present invention, the internal gear of the other planetary gear device is used. When the amount of displacement is changed, the torsional moment acting on the above-mentioned rotational torque transmission system changes, and the load acting on the meshing portion of the gears constituting the both planetary gear devices increases or decreases.

As described above, in any of the power circulation type gear test method according to claim 1 of the present invention and the power circulation type gear test device according to claim 2 of the present invention, the other planetary gear device By displacing the tooth gears in the circumferential direction, the loads acting on the meshing portions of the gears constituting the two planetary gear devices increase or decrease. It is possible to increase or decrease the load acting on, and it is possible to efficiently perform the power circulation type gear test.

Further, in the power circulation type gear testing device according to the second aspect of the present invention, it is possible to displace the internal gear of the other planetary gear device in the circumferential direction, and the displacement of the internal gear can be restrained. Since such an internal gear displacement mechanism is provided, the load acting on the meshing portion of each gear does not change during the power circulation gear test.

[0030]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows an embodiment of the power circulation type gear testing apparatus of the present invention. In the figure, the same reference numerals as those in FIG. 3 represent the same parts.

Reference numerals 52 and 53 denote bearings for supporting the driven housing 38 of the driven gear device 37 with respect to the substrate 1 on the driven power transmission shaft 47 so as to be rotatable in the circumferential direction, and 54 is the driven housing 3.
A worm wheel attached to the outer side of 8 around the driven power transmission shaft 47, 55 is a worm gear supported so as to mesh with the worm wheel 54,
The worm gear 55 is adapted to rotate by a drive device (not shown).

The worm wheel 54 has a self-locking property with respect to the worm gear 55 so that the worm gear 55 does not rotate even if the worm wheel 54 is biased in the circumferential direction.

With the power circulation type gear testing apparatus having the above-mentioned structure, the durability of the meshing portion between the test internal gear 28 and the test planetary gear 33 and the meshing portion between the test planetary gear 33 and the test sun gear 51 is improved. When performing the test (power circulation type gear test), the worm gear 5 is driven by a drive device (not shown).
5 to rotate the bearing 5 through the worm wheel 54
The driven housing 38 of the driven gear device 37 supported by 2, 53 is displaced in the circumferential direction around the driven power transmission shaft 47.

When the driven internal gear 39 along with the driven housing 38 is displaced in the circumferential direction, each driven planetary gear 44, driven planetary frame 42, driven connecting member 50, sample connecting member 49, sample planetary frame 31, each sample is tested. Planetary gear 33, test sun gear 5
1, a torsional moment acts on the rotational torque transmission system constituted by the test power transmission shaft 36, the driven power transmission shaft 47, the driven sun gear 48, and each of the driven planetary gears 44, and the torsional moment acts on each of these members. Of the test sun gear 51 and each of the test planetary gears 33, the meshing part of each of the test planetary gears 33 and each of the test internal tooth gears 28, the driven sun gear 48 and each of the driven planets. A load acts on each of the meshing portion with the gear 44 and the meshing portion with each of the driven planetary gears 44 and the driven internal gear 39.

If a load is applied to the meshing portion between the test sun gear 51 and each test planetary gear 33 and the meshing portion between each test planetary gear 33 and the test internal tooth gear 28, The driven power transmission shaft 47 is rotated by a driving device (not shown), and both the test gear device 26 and the driven gear device 37 are rotationally driven in a state in which a load acts on the meshing portion of each gear.

In this way, the test sun gear 51, the test planetary gears 33, and the test planetary gears 33 and the test internal tooth gears 28 are applied for a predetermined time with a load acting on their meshing portions. After the rotation, the deformation state of the meshing portion of each gear is investigated to evaluate the durability of the test sun gear 51, the test planetary gear 33, and the test internal gear 28.

When changing the loads acting on the meshing portion between the test internal gear 28 and the test planetary gear 33 and the meshing portion between the test planetary gear 33 and the test sun gear 51, respectively, it is illustrated. The worm gear 55 is rotated by a driving device that is not installed to displace the worm wheel 54 in the circumferential direction.

When the worm wheel 54 is displaced, the substrate 1
The rotation angle of the driven internal gear 39 with respect to is changed, and each driven planetary gear 44, driven planetary frame 42, driven connecting member 50, sample connecting member 49, sample planetary frame 31, each sample planetary gear 3
3, test sun gear 51, test power transmission shaft 36, driven power transmission shaft 47, driven sun gear 48, each driven planetary gear 4
The torsional moment acting on the rotational torque transmission system constituted by 4 changes, the meshing portion between the test sun gear 51 and each test planetary gear 33, and each test planetary gear 33 and the test internal gear 28. The load acting on the meshing part with and increases or decreases.

As described above, in this embodiment, by rotating the worm gear 55 and displacing the worm wheel 54 in the circumferential direction, the meshing portion between the test sun gear 51 and each test planetary gear 33, and Since the load acting on the meshing portion between each sample planetary gear 33 and the sample internal tooth gear 28 is adjusted, the meshing part of each of the gears described above is adjusted in the operating state of the sample gear device 26 and the driven gear device 37. The load acting can be increased or decreased, and the power circulation type gear test can be efficiently performed.

Further, since the worm wheel 54 has a self-locking property with respect to the worm gear 55, once the worm wheel 54 is positioned at a predetermined rotation angle, it is driven unless the worm gear 55 is rotated. The rotation angle of the internal gear 39 does not change, and therefore the load acting on the meshing portion of each gear does not change during the power circulation gear test.

The power circulation type gear testing method of the present invention and the power circulation type gear testing device used in the method are not limited to the above-mentioned embodiments, but an annular worm is provided in the driven housing of the driven gear device. Instead of installing a wheel, a worm wheel divided gear is installed in the driven housing according to the displacement required for the driven internal gear, and the worm wheel and the worm gear have a self-locking property. It goes without saying that an internal gear displacement mechanism is provided and other various modifications can be made without departing from the scope of the present invention.

[0043]

As described above, according to the power circulation type gear test method of the present invention and the power circulation type gear test apparatus used in the method, various excellent effects as described below can be obtained.

(1) In any of the power circulation type gear test method according to claim 1 of the present invention and the power circulation type gear test device according to claim 2 of the present invention, the inner teeth of the other planetary gear device By displacing the gears in the circumferential direction, the load acting on each meshing portion of each gear that constitutes both planetary gear devices increases or decreases. It is possible to increase or decrease the load acting on, and it is possible to efficiently perform the power circulation type gear test.

(2) In the power circulation type gear testing device according to the second aspect of the present invention, the internal gear of the other planetary gear device can be displaced in the circumferential direction and the displacement of the internal gear is restricted. Since the possible internal gear displacing mechanism is provided, the load acting on the meshing portion of each gear constituting the two planetary gear devices does not change during the power circulation type gear test.

[Brief description of drawings]

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

FIG. 2 is a conceptual diagram showing the principle of a power circulation type gear test.

FIG. 3 is a conceptual diagram assuming a case where a power circulation type gear test is performed using two sets of planetary gear devices according to a conventional technique.

[Explanation of symbols]

 26 Test Gear Device (Planetary Gear Device) 28 Test Internal Tooth Gear 31 Test Planetary Frame 33 Test Planetary Gear 37 Driven Gear Device (Planetary Gear Device) 39 Driven Internal Tooth Gear 42 Driven Planetary Frame 44 Test Planetary Gear 48 Driven sun gear 51 Test sun gear 54 Worm wheel (Internal gear displacement mechanism) 55 Worm gear (Internal gear displacement mechanism)

Claims (2)

[Claims] 1. An internal gear, a planet frame rotatably supported coaxially with the internal gear, and a plurality of planets pivotally supported by the planet frame so as to mesh with the internal gear. Each planetary gear includes two sets of planetary gear devices having substantially the same shape, each of which has a gear and a sun gear that is coaxial with the internal gear and rotatably supported so as to mesh with each planetary gear. Arranged so that the sun gears of the device are located on substantially the same axis, constraining the internal gear of one of the planetary gear devices so as not to rotate in the circumferential direction, connecting the respective sun gears of both planetary gear devices to each other, In addition, each planetary frame of both planetary gear devices is connected to each other, the internal gear of the other planetary gear device is displaced in the circumferential direction, and the sun gear of the planetary gear device is rotated. Gear test method. 2. An internal gear, a planet frame rotatably supported coaxially with the internal gear, and a plurality of planets pivotally supported by the planet frame so as to mesh with the internal gear. Each planetary gear includes two sets of planetary gear devices having substantially the same shape, each of which has a gear and a sun gear that is coaxial with the internal gear and rotatably supported so as to mesh with each planetary gear. Arrange so that the sun gear of the device is located on substantially the same axis, constrain the internal gear of one planetary gear device so that it does not rotate in the circumferential direction, and the internal gear of the other planetary gear device in the circumferential direction. An inner tooth gear displacement mechanism that is displaceably supported and that can be displaced in the circumferential direction of the inner tooth gear of the other planetary gear device and that can constrain the displacement of the inner tooth gear device is provided. Each sun gear is connected to each other, and each planet of both planetary gear devices is A power circulation type gear testing device characterized in that frames are connected to each other.