JPH08200454A - Locked train type speed changer - Google Patents

Abstract

PURPOSE: To facilitate phase adjustment of a gear tooth by constituting a gear train in the first/third stages of a paired helical gears and that in the second stage of a paired bevel gears, also providing a gear coupling of adjusting a phase of a tooth in an intermediate shaft. CONSTITUTION: When a slide gear 15 is moved in an axial direction of the first intermediate shaft 4, an internal gear 23 is rotated by action of a helical gear 18 provided in the gear 15 and a helical tooth 24 formed in the internal gear 23. Through a flange 6b integrally connected to this gear 23, turning force is transmitted to a gear 6, to give a preload to a gear train in the first stage constituted of a helical pinion provided in an input shaft and of the helical gear 6 provided in a plurality of the first two intermediate shafts 4. As a result, a phase is adjusted such that a tooth of a gear train in the first stage is completely meshed into contact. Since a gear train in the second stage, transmitting an output of the first intermediate shaft 4 to the second intermediate shaft 8, is constituted of a bevel pinion 7 provided in the shaft 4 and of a bevel gear 9 provided in the shaft 8, the preload given to the gear train in the first stage is accurately transmitted to the gear train in the second stage.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a locked train type transmission, and more particularly, to easily adjust the phase of teeth of gears and distribute power of an input shaft to a plurality of intermediate shafts in a strictly balanced manner.
The present invention relates to a locked train type transmission effective for gathering and transmitting to an output shaft.

[0002]

2. Description of the Related Art Generally, in a large-capacity transmission, the gears become too large, which causes problems such as limitation of gear processing machines and transportation.

As a technique for solving this, the power of the input shaft is simultaneously distributed to a plurality of intermediate shafts by the gear train of the first stage, and the power of the plurality of intermediate shafts is distributed to the second and third stages. There is a locked gear train that collects and transmits to the output shaft simultaneously by the eye gear train. In this locked gear train, it is absolutely necessary to adjust the phase of the gear teeth.

FIG. 6 is a plan view of a conventional locked train type transmission with a gear tooth phase adjusting device, and FIG. 7 is a longitudinal sectional view of FIG.

The locked train type transmission shown in these figures has a housing 1, an input shaft 2, a pinion 3 integrally provided with the housing 1, and two first intermediate members mounted in parallel on the same plane. A shaft 4, two gears 6 attached to each first intermediate shaft 4 via a coupling 5 and meshed with the pinion 3, and two bevels integrally provided on each first intermediate shaft 4. The pinion 7 and each bevel pinion 7 are arranged in a direction orthogonal to the first intermediate shaft 4 and
Second intermediate shafts 8 mounted in parallel, bevel gears 9 integrally provided on the second intermediate shafts 8 and meshed with the bevel pinions 7, and pinions integrally provided on the second intermediate shafts 8. 10, a gear 11 that is commonly meshed with these two pinions 10, and an output shaft 12 that is integrally attached to the gear 11. The end of each first intermediate shaft 4 on the coupling 5 side is covered with an end cover 13.

In the above-mentioned locked train type transmission, the power of the input shaft 2 is divided into a plurality of gears by the first-stage gear train composed of the pinion 3 and the gears 6, 6; To the first intermediate shaft 4 at the same time. Further, the above 2
The power of the first intermediate shaft 4 is set to a plurality of second intermediate shafts 8 in the illustrated example by the second-stage gear train including the bevel pinions 7 and 7 and the bevel gears 9 and 9. Communicate to. Then, the power of the two second intermediate shafts 8 is collected and output to one output shaft 12 by the third gear train including the pinions 10 and 10 and the gear 11.

As described above, when the power of the input shaft 2 is shifted, it is distributed to the two first intermediate shafts 4, so that the power transmitted by one intermediate shaft can be reduced. By doing so, it is possible to downsize the intermediate shaft and the gears attached to it, and accordingly, the input shaft 2
The transmission can be made compact as a whole in that the inter-axis distance between the output shaft 12 and the output shaft 12 can be reduced.

By the way, in order to make full use of the features of the locked train as described above, the gear train of the first stage for distributing the power from the input shaft 2 to the plurality of first intermediate shafts 4, the first intermediate shaft 4 A second-stage gear train that transmits power to the plurality of second intermediate shafts 8 and a third-stage gear train that collects and transmits the power of the plurality of second intermediate shafts 8 to one output shaft 12 It is indispensable to adjust the phase of the teeth so that the plurality of gears constituting the gears are in complete meshing contact with each other. If all of the gears forming each gear train are not held so as to be in complete meshing contact with each other, the transmission of power becomes unsuccessful and the characteristics of the locked train are reduced by half.

Therefore, in the conventional locked train type transmission, in order to make the phases of the teeth of the gears coincide, the following is done.

That is, in FIGS. 6 and 7, the phase is adjusted by the coupling 5 attached to the two first intermediate shafts 4, and after the phase adjustment, the phase is adjusted from the coupling 5 to the first intermediate shaft 4. A bolt hole is bored in the gear 6 formed by reaming, and the first intermediate shaft 4 and the coupling 5 are formed.
The gear 6 and the gear 6 are connected by a bolt 14.

[0011]

However, in the prior art for adjusting the phase of the teeth of the gear, as described above, the phase adjustment is performed by the coupling 5 attached to the first intermediate shaft 4, and the cup is adjusted after the phase adjustment. Since the bolt holes are formed in the ring 5 and the gear 6 provided on the first intermediate shaft 4 and the bolts 14 are coupled to each other, the power is balanced from the input shaft 2 to the plurality of first intermediate shafts 4. There is a problem that it cannot be distributed.

Further, in the prior art, since the work of aligning the teeth of the gears is performed in the process of the whole assembly, there is a problem that the workability is very poor, the output shaft 12 is not loaded, and the transmission is There is also a problem that various load tests such as tooth contact under load and noise test under load cannot be performed alone.

The object of the present invention is to solve the above-mentioned problems of the prior art, to easily adjust the phase of the gear teeth, and to distribute the power of the input shaft by strictly balancing the intermediate shafts. However, it is another object of the present invention to provide a locked train type transmission that can be aggregated and transmitted to an output shaft, and can perform various load tests by the transmission alone without applying a load to the output shaft.

[0014]

The above-mentioned object is to distribute the power of the input shaft to a plurality of intermediate shafts by the first stage gear train,
In a transmission using a locked train that simultaneously collects and transmits the power of the plurality of intermediate shafts to the output shaft by the gear train of the second stage and the gear train of the third stage, the gear train of the first stage is A helical gear pair, a second-stage gear train is a bevel gear pair, a third-stage gear train is a helical gear pair, and a gear joint for adjusting the phase of gear teeth is provided on the intermediate shaft. It is achieved by providing.

Further, the object is to provide a gear joint for adjusting the phase of teeth of the gear, a slide gear having a spur gear and a helical gear and movable in the axial direction, and a slide gear meshing with the spur gear and axially moving the slide gear. An internal gear that guides, and an internal gear that meshes with the helical gear and that rotates when the slide gear moves in the axial direction and that rotates the gear whose tooth phase should be adjusted; and an internal gear that moves the slide gear in the axial direction and This is better achieved by including a lock nut that locks the gear whose phase is to be adjusted after adjusting the gear.

Further, the object is to provide a gear coupling for adjusting the phase of the teeth of the gear, a slide gear having a spur gear and a helical gear and movable in the axial direction, and a gear meshing with the spur gear and axially moving the slide gear. An internal gear that guides, and an internal gear that meshes with the helical gear and that rotates when the slide gear moves in the axial direction and that rotates the gear whose tooth phase should be adjusted; and an internal gear that moves the slide gear in the axial direction and After adjusting the gear whose phase should be adjusted,
It is better achieved by being configured with a fluid pressure supply means for holding the adjusted state.

[0017]

In the present invention, the first-stage gear train that distributes the power of the input shaft to the plurality of intermediate shafts is composed of a helical gear pair,
Of the second- and third-stage gear trains that collect and transmit the power of the plurality of intermediate shafts to the output shaft, the second-stage gear train is configured with a bevel gear pair, and the third-stage gear train is formed. The gear train is composed of a pair of helical gears. A gear joint for adjusting the phase of the gear teeth is provided on the intermediate shaft.

Therefore, when adjusting the phases of the teeth of the gear trains of the first to third stages, the gear coupling is operated to preload the gear train of the first stage provided on the intermediate shaft. Give,
The phases are aligned so that the teeth of the first-stage gear train are in complete meshing contact. This allows the power of the input shaft to be strictly balanced and distributed to the plurality of intermediate shafts.

In the present invention, as described above, the first gear train is composed of a helical gear pair, the second gear train is composed of a bevel gear pair, and the third gear train is composed of a helical gear pair. Since it is configured as described above, the preload applied to the gear train of the first stage to adjust the phase of the gear teeth can be accurately transmitted to the gear trains of the second and third stages. Not only the gear train of the first stage, but also the second and third stages
It is possible to easily adjust the phases of the teeth of the gear train of the step so that they are in meshing contact with each other.

Moreover, in the present invention, a preload is applied to the gear train of the first stage, and the preload is applied to the second stage and the third stage.
By transmitting to the gear train of the second stage, the same condition as when the load is applied to the output shaft can be expressed, so the transmission alone can load without using a special device for applying a load to the output shaft. It is possible to perform various tests under load, such as tooth contact at the time, noise under load, etc.

Further, in the present invention, a gear joint for adjusting the phase of the teeth of the gear is provided with a slide gear having a spur gear and a helical gear and movable in the axial direction, and a slide gear meshing with the spur gear and having the slide gear in the axial direction. An internal gear that guides, and an internal gear that meshes with the helical gear and that rotates when the slide gear moves in the axial direction and that rotates the gear whose tooth phase should be adjusted; and an internal gear that moves the slide gear in the axial direction and After adjusting the gear whose phase is to be adjusted, a lock nut for locking the adjusted state is provided.

Therefore, when the phase of the teeth of the gear is adjusted, the lock nut is operated to slide by the action of the spur gear provided on the slide gear and the internal gear that meshes with this and guides the slide gear in the axial direction. Move the gear axially. When the slide gear is moved, the internal gear meshed with the herringle gear is rotated by the action of the helical gear provided in the slide gear, and the gear whose phase of the teeth is to be adjusted is rotated to give a preload. As a result, the phase is adjusted so that the teeth of the first-stage gear train that distributes the power of the input shaft to the plurality of intermediate shafts are in complete meshing contact. Then, when a preload for phase adjustment is applied to the first-stage gear train, the preload is, as described above, the first load composed of a helical gear pair.
The gear train from the second gear train to the second gear train consisting of the bevel gear pair and the third gear train consisting of the helical gear sequence are accurately transmitted to the second gear train and the second gear train. The phase is adjusted so that the teeth of the gear train of the third stage are completely meshed with each other. After such phase adjustment, the lock nut locks the gear in the adjusted state.

Thus, the phase adjustment of the teeth of the gear can be performed more easily and surely, a preload is applied to the gear train of the first stage, and the preload is applied to the second and third stages. Since the same state as the state in which the output shaft is loaded can be revealed by transmitting the load to the gear train of, the various load tests of the transmission can be performed more accurately.

Further, in the present invention, a gear joint for adjusting the phase of the teeth of the gear is a slide gear having a spur gear and a helical gear and movable in the axial direction, and a slide gear meshed with the spur gear and the slide gear in the axial direction. An internal gear that guides, and an internal gear that meshes with the helical gear and that rotates when the slide gear moves in the axial direction and that rotates the gear whose tooth phase should be adjusted; and an internal gear that moves the slide gear in the axial direction and After adjusting the gear whose phase should be adjusted,
And a fluid pressure supply means for maintaining the adjusted state.

As a result, in the present invention, an appropriate fluid pressure is applied to the slide gear through the fluid pressure supply means to move the slide gear in the axial direction by an appropriate amount, and the helical gear provided on the slide gear meshes with the internal gear. The gears are rotated, and proper preload is applied to the teeth of the first-stage gear train through this internal gear, and the preload is sequentially applied from the first-stage gear train to the second- and third-stage gear trains. It is possible to perform the phase adjustment so that the gears are transmitted to the gear trains of the first to third stages so that they are in complete meshing contact.
Also in the present invention, a preload is applied to the gear train of the first stage, the preload is transmitted to the gear trains of the second stage and the third stage, and the same state as the state where the load is applied to the output shaft is applied. Since it can be revealed, various load tests can be carried out more accurately with the transmission alone.

[0026]

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

1 to 3 show a first embodiment of the present invention. FIG. 1 is a longitudinal sectional view and FIG. 2 is an enlarged view of a portion P in FIG. 1 for adjusting the phase of gear teeth. FIG. 3 is an enlarged cross-sectional view of the gear joint to be performed, and FIG. 3 is an exploded perspective view of the gear joint.

In the first embodiment shown in these figures, the first-stage gear train that distributes the power of the input shaft to the plurality of two first intermediate shafts 4 is provided on the input shaft and is helical. A pinion having teeth and a gear 6 provided on each first intermediate shaft 4 and having helical teeth are meshed with each other to form a helical gear pair.

The second stage gear train for transmitting the power of each first intermediate shaft 4 to the second intermediate shaft 8 includes a bevel pinion 7 provided on the first intermediate shaft 4 and a second intermediate shaft. 8 is a so-called bevel gear pair that meshes with a bevel gear 9.

Further, a plurality of two second intermediate shafts 8
The gear train of the third stage that collects and transmits the power of the above to one output shaft 12 includes a pinion 10 provided on each second intermediate shaft 8 and having helical teeth, and a helical gear provided on the output shaft 12 And a gear 11 having a gear.

A gear joint is provided as a means for adjusting the phase of the teeth of the gear train.

As shown in detail in FIGS. 2 and 3, the gear coupling has a slide gear 15, an internal gear 20, another internal gear 23, a block 26, and another block 29.
The split nut 30 and the integral ring 32, and the coupling 34 are provided.

The slide gear 15 is provided with a spur gear 16, a male screw 17, and a helical gear 18 on the outer peripheral surface thereof, and a ring-shaped web 19 is provided inside thereof. This slide gear 15 has a helical gear 18 as a first gear.
It is arranged on the outer circumference of the first intermediate shaft 4 toward the gear 6 side forming the first-stage gear train provided on the intermediate shaft 4. The slide gear 15 is attached so as to be movable in the axial direction of the first intermediate shaft 4, but does not rotate.

The internal gear 20 has spur teeth 21 and a flange 22 formed inside. The spur tooth 21 meshes with the spur gear 16 of the slide gear 15 and guides the slide gear 15 straight in the axial direction of the first intermediate shaft 4 when the slide gear 15 moves.

The internal gear 23 has a helical tooth 2 inside.
4 are formed. The helical teeth 24 are meshed with the helical gear 18 of the slide gear 15. The internal gear 23 is integrally connected to the flange 6b attached to the tubular shaft 6a of the gear 6 provided on the first intermediate shaft 4 with a spacer 25 interposed therebetween. The internal gear 23 is rotated by the action of the helical gear 18 and the helical teeth 24 when the slide gear 15 is moved in the axial direction, so that the gear 6 is rotated.

The block 26 has a large-diameter portion 27 fitted to the inner circumference of the slide gear 15 and a small-diameter portion 28 fitted to the inner circumference of the web 19 of the slide gear 15. The block 26 has a large diameter portion 27 arranged on the spur gear 16 side of the slide gear 15 and is inserted between the first intermediate shaft 4 and the slide gear 15.

The block 29 corresponds to the slide gear 1
5 and the outer circumference of the small diameter portion 28 of the block 26.

The blocks 26 and 29 define the moving range of the slide gear 15.

The split nut 30 corresponds to the internal gear 2
It has a flange 31 that abuts the zero flange 22. The split nut 30 is combined and screwed at the position of the male screw 17 of the slide gear 15, and is retained by the integral ring 32. The split nut 30 and the integral ring 32 rotate the split nut 30 to cause the slide gear 15 to move in the axial direction of the first intermediate shaft 4 by the screw action with the male screw 17 of the slide gear 15, for example, 2 is moved in the direction of arrow a to adjust the phase of the teeth, and after adjusting the gear, the integral ring 32, the flange 31 of the split nut 30 and the flange 22 of the internal gear 20 are bolted and fixed with bolts 33. A lock nut for locking the phase-adjusted gear in an adjusted state is configured.

The coupling 34 supports the components of a gear joint between the coupling 34 and the flange 6b of the gear 6.

The other structure of the first embodiment is the same as that of the locked train type transmission shown in FIGS. 6 and 7.

Next, the operation of the first embodiment constructed as described above will be explained.

First, in the step before adjusting the phase of the teeth of the gear, the male screw 17 of the slide gear 15 is divided into two half nuts 3.
0 is screwed, and the split nut 30 is an integral ring 3
Although the shape is maintained by 2, the integral ring 32, the flange 31 of the split nut 30 and the flange 22 of the internal gear 20.
Are not connected by bolts 33, so that the assembly of the split nut 30 and the integral ring 32 acts independently.

Therefore, when adjusting the phase of the gear teeth, the assembly of the split nut 30 and the integral ring 32 is rotated. When the assembly of the halved nut 30 and the integral ring 32 is rotated, the male screw 17 of the slide gear 15 and the halved nut 30 are screwed together to produce the slide gear 1.
5 moves in the axial direction of the first intermediate shaft 4. At this time, the slide gear 15 is guided straight in the axial direction by the action of the spur gear 16 provided on the slide gear 15 and the spur teeth 21 formed on the internal gear 20.

As described above, when the slide gear 15 moves in the axial direction of the first intermediate shaft 4, the action of the helical gear 18 provided on the slide gear 15 and the helical teeth 24 formed on the internal gear 23 causes the internal gear 23 to move. Rotates. When the internal gear 23 rotates, the rotational force is transmitted to the gear 6 through the flange 6b integrally connected to the internal gear 23, and the helical pinion provided on the input shaft and the plural first intermediate shafts 4 are provided. A preload is applied to the first-stage gear train formed by the helical gear pair formed by the helical gear 6 provided in the. As a result, the phase is adjusted so that the teeth of the first-stage gear train are in complete meshing contact.

Then, the second stage gear train for transmitting the output of the first intermediate shaft 4 to the plurality of second intermediate shafts 2 is the bevel pinion 7 provided on the first intermediate shaft 4. And the bevel gear 9 provided on the second intermediate shaft 8 constitute a bevel gear pair, so that the preload applied to the first-stage gear train is accurately transmitted to the second-stage gear train. .

As a result, the phases of the teeth of the gear train of the second stage are adjusted so that they are completely meshed with each other.

Further, the third stage gear train for collecting and transmitting the output of the second intermediate shaft 8 to the output shaft 12 is provided with the helical pinion 10 provided on the second intermediate shaft 8 and the output shaft 12.
Since it is composed of a helical gear pair with the helical gear 11 provided in the first gear train, the preload applied to the first gear train is accurately transmitted to the third gear train through the second gear train. To be done. As a result, the phases of the teeth of the gear train in the third stage are also adjusted so that they are in complete meshing contact.

As described above, after adjusting the phase so that the teeth of the gear trains of the first to third stages are in meshing contact with each other, the flanges of the integral ring 32 and the split nut 30 are preloaded. 31 and the flange 2 of the internal gear 20
A bolt hole common to 2 is made, and a bolt 33 is inserted to connect the three members, as shown in FIGS. 1 and 2. As a result, the gear trains of the first to third stages are locked in the phase adjusted state.

As described above, in this embodiment, the power of the input shaft can be distributed to the two first intermediate shafts 4 in a strictly balanced manner through the first-stage gear train, and the first intermediate shaft 4 can also be distributed. Can be accurately transmitted to the second intermediate shaft 8 through the second gear train, and the output of the second intermediate shaft 8 can be accurately transmitted to one output shaft 12 through the third gear train. It can be collected and collected at.

When carrying out a load test of the transmission, a preload is applied to the gear train of the first stage and the preload is applied to the gear train of the second stage in the same manner as in the phase adjustment of the gear teeth. And, by transmitting to the gear train of the third stage, the same state as when the load is applied to the output shaft 12 is revealed, and the integral ring 32, the split nut 30, and the internal gear 20 are temporarily fixed.

After being set in this way, the gear trains of the first to third stages are rotated through the input shaft in the same state as when the load is applied to the output shaft 12, whereby the transmission is Various load tests such as tooth contact under load, noise test under load, etc. can be performed by itself. Therefore, it becomes possible to perform various load tests of the transmission in the factory to a satisfactory extent before the on-site installation.

The other operation of the first embodiment is the same as that of the prior art shown in FIGS. 6 and 7.

Next, FIG. 4 is a longitudinal sectional view showing a second embodiment of the gear joint which is the essential part of the present invention, and FIG. 5 is an exploded perspective view of the gear joint.

The second embodiment shown in FIGS. 4 and 5 is different from the first embodiment in the following points.

That is, the slide gear 15 and the block 2
A fluid pressure chamber 37 is formed between the slide gear 15 and the block 26, and a fluid pressure chamber 38 is formed between the slide gear 15 and the block 26.

The fluid pressure chamber 37 includes a fluid pressure passage 35a provided in the first intermediate shaft 4, a fluid pressure passage 35b provided in the coupling 34, a fluid pressure passage 35c provided in the internal gear 20, and a block 26. Fluid pressure passage 35d provided in
Through a fluid pressure unit (not shown).

The fluid pressure chamber 38 includes a fluid pressure passage 36a provided in the first intermediate shaft 4, a fluid pressure passage 36b provided in the coupling 34, a fluid pressure passage 36c provided in the internal gear 20, and the block 26. Is connected to the fluid pressure unit through a fluid pressure passage 36d provided in the large-diameter portion 27.

The fluid pressure unit and fluid pressure passage 35a
-35d and 36a-36d, and fluid pressure chambers 37 and 38
With the above, a fluid pressure supply means for moving the slide gear 15 in the axial direction and adjusting the gear for which the phase of the tooth is adjusted and then maintaining the adjusted state is provided. The hydraulic pressure is mainly used as the fluid pressure.

In the second embodiment, the male screw 17, the split nut 30, and the integral ring 32 of the slide gear 15 in the first embodiment are not provided because they are unnecessary.

In the second embodiment constructed as described above, when the phase adjustment of the gear teeth is performed, the fluid pressure is supplied to the fluid pressure chamber 37 through the fluid pressure passages 35a to 35d from the state of FIG. Of the fluid pressure in the fluid pressure chamber 38
Return to the tank of the fluid pressure unit through a to 36d.

As a result, the slide gear 15 moves in the direction of arrow a in FIG. When the slide gear 15 moves in the direction of arrow a in FIG. 4, the teeth of the gear trains of the first to third stages are brought into complete meshing contact with each other by the same action as in the first embodiment. The phase is adjusted.

As described above, after adjusting the phases of the teeth of the gears of the first to third stages, the ends of the fluid pressure passages 35a and 36a are closed with a tight plug (not shown), and the slide gear 15 moves. Fix not to.

Also, since the same state as when the output shaft is loaded by applying a preload to the gear trains of the first to third stages through the fluid pressure can be revealed, the transmission can also be used in this second embodiment. Various load tests can be performed by itself.

The first and second embodiments of the present invention are the same as the first embodiment.
The intermediate shaft 4 and the second intermediate shaft 8 are not limited to two, and can be applied to a locked train type transmission having three or more.

[0066]

According to the invention described in claim 1 of the present invention described above, the power of the input shaft is distributed to the plurality of intermediate shafts by the gear train of the first stage, and the power of the plurality of intermediate shafts is distributed. In a transmission using a locked train that simultaneously collects and transmits power to an output shaft by a gear train of a second stage and a gear train of a third stage, the gear train of the first stage is composed of a helical gear pair, The second-stage gear train is composed of a bevel gear pair, the third-stage gear train is composed of a helical gear pair, and the intermediate shaft is provided with a gear joint for adjusting the phase of gear teeth. The preload is applied to adjust the phase of the teeth of the first stage gear train, and the phases are adjusted so that the teeth are in complete meshing contact, so that the power of the input shaft is strictly balanced to the multiple intermediate shafts. There is an effect that can be distributed. Further, according to the present invention, the first gear train is composed of a helical gear pair, the second gear train is composed of a bevel gear pair, and the third gear train is composed of a helical gear pair. Since the preload applied to the gear train of the first stage to adjust the phase of the teeth of the gear can be accurately transmitted to the gear trains of the second and third stages, the first stage It is possible to easily adjust not only the gear train of No. 3 but also the phases of the teeth of the gear trains of the second and third stages so as to be in complete meshing contact. Moreover, according to the present invention, by applying a preload to the gear train of the first stage and transmitting the preload to the gear trains of the second and third stages, the same as when the output shaft is loaded. Since the state can be displayed, there is also an effect that various gear load tests such as tooth contact under load and noise during load can be performed by the transmission alone without using a special device for applying a load to the output shaft. .

According to a second aspect of the present invention, the gear joint for adjusting the phase of the teeth of the gear is a slide gear having a spur gear and a helical gear and movable in the axial direction, An internal gear that meshes with the spur gear and guides the slide gear in the axial direction; an internal gear that meshes with the helical gear and that rotates when the slide gear moves in the axial direction and that rotates the gear whose tooth phase is to be adjusted; Since it is equipped with a lock nut that locks the gear in the adjusted state after adjusting the gear that should move the gear in the axial direction and adjust the tooth phase, it is even easier to adjust the tooth phase of the gear. In addition, there is an effect that can be surely performed, a preload is given to the gear train of the first stage, and the preload is transmitted by the gear trains of the second and third stages, and a load is applied to the output shaft. Because on purpose it can be revealing the same state,
There is an effect that the tests under various loads of the transmission can be carried out more accurately.

Further, according to a third aspect of the present invention, a gear coupling for adjusting the phase of the teeth of the gear is a slide gear having a spur gear and a helical gear and movable in the axial direction, An internal gear that meshes with the spur gear and guides the slide gear in the axial direction; an internal gear that meshes with the helical gear and that rotates when the slide gear moves in the axial direction and that rotates the gear whose tooth phase is to be adjusted; The first stage to the third stage are configured by including fluid pressure supply means for moving the gear in the axial direction and adjusting the gear whose phase of the teeth is to be adjusted and then maintaining the adjusted state. There is an effect that the phase adjustment can be performed so as to make a complete meshing contact up to the gear train of the second gear train. In the present invention, a preload is applied to the first gear train and the preload is applied to the second gear train. Preliminary transmitted to the third-stage gear train, since the same state as the state obtained by multiplying the load on the output shaft can emerge,
There is an effect that the various tests under various loads can be carried out more accurately by the transmission alone.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view showing a first embodiment of the present invention.

FIG. 2 is an enlarged view of a P portion of FIG. 1, which is an enlarged sectional view of a gear joint.

FIG. 3 is an exploded perspective view of the gear coupling shown in FIG.

FIG. 4 shows a second embodiment of the present invention and is an enlarged sectional view of a gear joint.

5 is an exploded perspective view of the gear joint shown in FIG.

FIG. 6 is a plan view showing a conventional locked train type transmission.

7 is a vertical cross-sectional view of FIG.

[Explanation of symbols]

1 ... Housing, 2 ... Input shaft, 3 ... Pinion, 4 ... 1st
Intermediate shaft, 6 ... Gear, 7 ... Bevel pinion, 8 ... Second intermediate shaft, 9 ... Bevel gear, 10 ... Pinion, 11 ... Gear, 1
2 ... Output shaft, 15 ... Slide gear that constitutes a gear joint, 16 ... Spur gear provided on the slide gear, 17
... Male screw, 18 ... Similar helical gear, 20 ... Internal gear, 21 ... Spur teeth formed on internal gear, 23 ... Internal gear, 24 ... Helical teeth formed on internal gear, 26, 29
... Block, 30 ... Split nut that constitutes a lock nut, 32 ... Similarly, integral ring, 33 ... Bolt that connects the integral ring, split nut and internal gear after phase adjustment of teeth, 34 ... Couplings, 35a to 35d 36
a to 36d ... Fluid pressure passages, 37, 38 ... Fluid pressure chambers.

Claims (3)

[Claims] 1. The power of an input shaft is distributed to a plurality of intermediate shafts by a first-stage gear train, and the power of the plurality of intermediate shafts is distributed to a second-stage gear train and a third-stage gear. In a transmission using a locked train that simultaneously collects and transmits to the output shaft by a train, the first gear train is composed of a helical gear pair, and the second gear train is composed of a bevel gear pair.
A locked train type transmission characterized in that a gear train of a stage is composed of a helical gear pair, and a gear joint for adjusting a phase of gear teeth is provided on the intermediate shaft. 2. A gear joint for adjusting the phase of the teeth of the gear, a slide gear having a spur gear and a helical gear and movable in the axial direction, and an inner gear for meshing with the spur gear and guiding the slide gear in the axial direction. Gears mesh with the helical gear and rotate when the slide gear moves in the axial direction, rotate the gear that should adjust the tooth phase, and move the slide gear in the axial direction and adjust the tooth phase. The lock train type transmission according to claim 1, further comprising a lock nut that locks the gear to be adjusted after the gear is adjusted. 3. A gear joint for adjusting the phase of the teeth of the gear, a slide gear having a spur gear and a helical gear and movable in the axial direction, and an internal gear which meshes with the spur gear and guides the slide gear in the axial direction. Gears mesh with the helical gear and rotate when the slide gear moves in the axial direction, rotate the gear that should adjust the tooth phase, and move the slide gear in the axial direction and adjust the tooth phase. The locked train type transmission according to claim 1, further comprising: a fluid pressure supply means for holding the gear to be adjusted after the gear is adjusted.