CN101349343B

CN101349343B - Oil way splicing apparatus of planetary gear box combined type planetary supporter

Info

Publication number: CN101349343B
Application number: CN2008100460705A
Authority: CN
Inventors: 张敏锐; 王雁; 阮贵生
Original assignee: DEC Dongfang Turbine Co Ltd
Current assignee: DEC Dongfang Turbine Co Ltd
Priority date: 2008-09-13
Filing date: 2008-09-13
Publication date: 2011-05-04
Anticipated expiration: 2028-09-13
Also published as: CN101349343A

Abstract

The invention discloses an oil passage splicing device for a combined type planet carrier of a planetary gearbox, which is arranged in an oil passage of the planet carrier and located on the combination portion of a planet inner carrier and a planet outer carrier. The device comprises a lower sleeve, an upper sleeve and a bulb tube, the lower sleeve is fixedly arranged in an oil hole of the planet outer carrier, the upper sleeve is fixedly arranged in an oil hole of the planet inner carrier, oil passages of the planet inner carrier and the planet outer carrier are linked by the bulb tube which is arranged between the lower sleeve and the upper sleeve, and engaged faces between the bulb tube and the lower sleeve and between the bulb tube and the upper sleeve are spherical surfaces, the device further comprises a spring and a hollow screw plug, the screw plug is arranged in the oil hole of the planet outer carrier or the planet inner carrier and used to fix parts in the device, and clearances and leakage are avoided among the bulb tube and the combination portions of the inner and outer spherical surfaces of the upper sleeve and the lower sleeve by utilizing the spring. The oil passage splicing device has the advantages that oil passages of the planet inner carrier and the planet outer carrier are kept to be continuous by utilizing the oil passage splicing device, oil can not leak from the clearance between the planet inner carrier and the planet outer carrier, thereby improving the lubricating effect of a bearing, and increasing the safety of the planetary gearbox.

Description

The oil way continued connecting apparatus of planetary gear box combined type planetary supporter

Technical field

The present invention relates to planetary transmission, be specifically related to the oil circuit device of this speed-changing gear box assembly planetary carrier.

Background technique

The planet carrier of planetary transmission has two kinds of structures: a kind of is inside and outside integral casting forming; Another kind is inside and outside split casting moulding, is combined into one.Integral planet carrier is suitable for the speedup/fast occasion of slowing down of constant rotational speed, and assembly planetary carrier is suitable for the speedup/deceleration occasion of variable speed, for example the speedup epicyclic gearbox of wind-driven generator.The megawatt-level wind epicyclic gearbox belongs to typical low-speed heave-load and becomes the torque power transmission.If adopt the cast-in-block planet carrier, will cause the unbalance loading of planetary pinion and planetary bearing owing to the distortion of planet carrier, seriously influenced the reliability of bearing mathematic(al) expectation.Though the artificer of gear-box also can take appropriate measures, for example method such as gear modification solves this type of problem, but because gear modification designs by a certain constant-torque (operation point), in different wind energy turbine set, this constant moment of torsion is different, certainly exist the unbalance loading of planetary pinion and planetary bearing, thereby causing the inefficacy in advance of planetary bearing.

Compare with integral planet carrier, though assembly planetary carrier can effectively overcome above-mentioned drawback, increasing certain degree of difficulty aspect the manufacturing of planet carrier and the lubrication system, especially the oil circuit setting of lubrication system is a big difficult point.Because planetary bearing need lubricate, oilhole must be set on planet carrier form oil-way system, to satisfy lubricating requirement, oil circuit need run through inside and outside of planet, just can enter bearing.But, in assembly planetary carrier, for satisfying assembly and use requirements, on the fitting surface of planetary inner frames and planetary outer frames, to leave certain clearance, make oil circuit be interrupted, become leakage point, will leak when the oil in the oilhole is flowed through herein, cause to satisfy the needs of bearing lubrication.

Summary of the invention

Purpose of the present invention in order to solve above-mentioned defective of the prior art, provides a kind of planetary gear box combined type planetary supporter oil circuit device exactly, and the oil circuit of this device keeps linking up when the gap of passing between inside and outside of the planet, and lubricant oil can not leak.

The object of the present invention is achieved like this:

A kind of oil way continued connecting apparatus of planetary gear box combined type planetary supporter, this device is arranged in the planet carrier oil circuit, is positioned at planetary inner frames, planetary outer frames connecting part; This device comprises traps, goes up cover, bulb pipe, the described fixed and arranged of trapping is in the oilhole of planetary inner frames, the described cover fixed and arranged that goes up is in the oilhole of planetary outer frames, described bulb pipe is between trapping, go up between the cover, the oil circuit of planetary inner frames, planetary outer frames is communicated with, the bulb pipe is a sphere with the fitting surface of trapping, go up cover, can swing arbitrarily with planet carrier.

This device also comprises spring, hollow plug screw; The oilhole of described planetary inner frames is a shoulder hole, and described trapping is arranged on the step in this hole; The hypomere of the oilhole of described planetary outer frames is a unthreaded hole, and epimere is a screw, and the described cover of going up is arranged in the unthreaded hole section, and cooperates with the hole wall longitudinal sliding motion; Described hollow plug screw is arranged in the screw section, with the hole wall screw-thread fit; Described spring is between last cover, hollow plug screw, and the upper-end surface of cover is withstood in the lower end surface of withstanding hollow plug screw on it, lower end; The described fitting surface of going up cover and planetary outer frames is provided with Sealing.

The another kind of scheme of this device is:

The oilhole of described planetary outer frames is a shoulder hole, and the described cover of going up is arranged on the step in this hole, with this hole drive fit; The epimere of the oilhole of described planetary inner frames is a unthreaded hole, and hypomere is a screw, and described trapping is arranged in the unthreaded hole section, and the hole wall longitudinal sliding motion cooperates; Described hollow plug screw is arranged in the screw section, with the hole wall screw-thread fit; Described spring trap, between the hollow plug screw, the upper-end surface of hollow plug screw is withstood in its lower end, the lower end surface of trapping is withstood in the upper end; Described fitting surface of trapping with planetary inner frames is provided with Sealing.

Useful technique effect of the present invention:

Owing to be provided with oil way continued connecting apparatus, the oil circuit of planetary inner frames and planetary outer frames is kept continuously, can be from the clearance leakage between planetary inner frames and the planetary outer frames, thus improved the lubrication effect of bearing, the Security that has improved planetary transmission.

Description of drawings

Fig. 1-a is a kind of structure of this device and the position view in planetary transmission thereof

Fig. 1-b is A part (oil circuit device) enlarged view among Fig. 1-a

Fig. 2 is the structural drawing that this device is gone up cover

Fig. 3 is the structural drawing of this device bulb pipe

Fig. 4 is the structural drawing that this device is trapped

Fig. 5 is this structural drawing that installs hollow plug screw

Fig. 6 is the structural drawing of this device spring

Code name implication among the figure:

1-planetary inner frames; 2-planetary outer frames; 3-planetary pinion; 4-bearing; 5-planet axis; 6-hollow plug screw; 7-spring; 8-go up and overlap; 9-seal ring; 10-bulb pipe; 11-trap; A-oil circuit device.

Embodiment

Referring to Fig. 2 to Fig. 4: this device mainly is made of last cover 8,

bulb pipe

10,11 3 basic parts of trapping, two bulbs of bulb pipe 10 respectively with last cover 8, trapping 11 cooperates, fitting surface all is a sphere.

Referring to Fig. 1-a, Fig. 1-b: planetary pinion 3 is contained on the planet carrier by planet axis 5, bearing 4.Planet carrier is provided with oil circuit, leads to bearing, and it is lubricated.This device A is arranged in the planet carrier oil circuit, is positioned at the connecting part of planetary inner frames 1, planetary outer frames 2.For the ease of assembling, the oilhole of planetary inner frames 1 is designed to shoulder hole, and trapping 11 is arranged on the step in this hole, trap 11 with this hole drive fit; The oilhole of planetary outer frames 2 is divided into two sections, and hypomere is a unthreaded hole, and the upper end is a screw, on overlap 8 and be arranged in the unthreaded hole section, cooperate with the hole wall longitudinal sliding motion; At the hollow plug screw 6 of screw Duan Peiyi, with the hole wall screw-thread fit; Between last cover 8, hollow plug screw 6, establish a spring 7, the lower end surface that hollow plug screw 6 is withstood in its upper end, the upper-end surface of cover 8 is withstood in the lower end.Like this, hollow plug screw 6, on overlap 8,

bulb pipe

10,11 the endoporus of trapping be communicated with in proper order, just constitutes a continuous oil circuit.If, gap between planetary inner frames 1 and the planetary outer frames 2 is equivalent to the river, and planetary inner frames 1 and planetary outer frames 2 are equivalent to the two sides in river, so, 10 bridges that are equivalent to cross over this river of bulb pipe are with the oil circuit connection of planetary inner frames 1 and planetary outer frames 2 these two sides.

Last cover 8, bulb pipe 10, the 11 employing spheres of trapping cooperate, be because planetary transmission is when moving, the relative movement of any direction can take place between planetary inner frames 1 and the planetary outer frames 2, the adaptive characteristic that utilizes sphere to cooperate, bulb pipe 10 is swung arbitrarily with planet carrier, and lubricant oil can not leak from sphere.

Hollow plug screw 6 (shown in Figure 5) is used for fixing each part in the device, is provided with that spring 7 (shown in Figure 6) can guarantee bulb pipe 10 and last cover 8, trapping does not have the gap between the 11 inside and outside spherical surface joining portion, guarantees that sealing reliably, do not leak.

The assembly process of this device:

When assembling planetary inner frames 1, outrigger 2, be about to trap 11, bulb pipe 10 puts in their oilholes, and then will go up cover 8, spring 7, hollow plug screw 6 are packed in proper order from the upper end-hole of outrigger oilhole, the hollow plug screw 6 of turn, adjust after the spring force, keep the relative position of each part to fix, no longer change.

In addition, for guarantee cover 8, trap 11 and planetary inner frames 2, planetary outer frames 1 between sealing effect, be provided with Sealing 9 at their fitting surface, be located on the radial fit face.

Above structure is applicable to slow-revving planetary transmission, for high-revolving planetary transmission, this can be installed reversed arrangement, be about to hollow plug screw, spring is arranged in the oilhole of planetary inner frames, the oilhole structure that planet is inside and outside is also done corresponding improvement, makes it adaptive.

This structure is specially adapted to become the required epicyclic gearbox assembly planetary carrier of moment of torsion input occasion, as wind-power electricity generation, and hydroelectric power etc.

Claims

1. the oil way continued connecting apparatus of a planetary gear box combined type planetary supporter, it is characterized in that: this device is arranged in the planet carrier oil circuit, is positioned at planetary inner frames, planetary outer frames connecting part; This device comprises traps, goes up cover, bulb pipe, the described fixed and arranged of trapping is in the oilhole of planetary inner frames, the described cover fixed and arranged that goes up is in the oilhole of planetary outer frames, described bulb pipe is between trapping, go up between the cover, the oil circuit of planetary inner frames, planetary outer frames is communicated with, the bulb pipe is a sphere with the fitting surface of trapping, go up cover, swings arbitrarily with planet carrier.

2. the oil way continued connecting apparatus of planetary gear box combined type planetary supporter according to claim 1, it is characterized in that: this device also comprises spring, hollow plug screw; The oilhole of described planetary inner frames is a shoulder hole, and described trapping is arranged on the step in this hole; The hypomere of the oilhole of described planetary outer frames is a unthreaded hole, and epimere is a screw, and the described cover of going up is arranged in the unthreaded hole section, and cooperates with the hole wall longitudinal sliding motion; Described hollow plug screw is arranged in the screw section, with the hole wall screw-thread fit; Described spring is between last cover, hollow plug screw, and the upper-end surface of cover is withstood in the lower end surface of withstanding hollow plug screw on it, lower end.

3. the oil way continued connecting apparatus of planetary gear box combined type planetary supporter according to claim 1 is characterized in that: the described fitting surface of going up cover and planetary outer frames is provided with Sealing.

4. the oil way continued connecting apparatus of planetary gear box combined type planetary supporter according to claim 1, it is characterized in that: this device also comprises spring, hollow plug screw; The oilhole of described planetary outer frames is a shoulder hole, and the described cover of going up is arranged on the step in this hole, with this hole drive fit; The epimere of the oilhole of described planetary inner frames is a unthreaded hole, and hypomere is a screw, and described trapping is arranged in the unthreaded hole section, and the hole wall longitudinal sliding motion cooperates; Described hollow plug screw is arranged in the screw section, with the hole wall screw-thread fit; Described spring trap, between the hollow plug screw, the upper-end surface of hollow plug screw is withstood in its lower end, the lower end surface of trapping is withstood in the upper end.

5. the frame oil way continued connecting apparatus of gear box combined type planetary planet according to claim 4 is characterized in that: described fitting surface of trapping with planetary inner frames is provided with Sealing.