CN110792588B - Transmission lubrication with pressurized oil - Google Patents
Transmission lubrication with pressurized oil Download PDFInfo
- Publication number
- CN110792588B CN110792588B CN201911255352.0A CN201911255352A CN110792588B CN 110792588 B CN110792588 B CN 110792588B CN 201911255352 A CN201911255352 A CN 201911255352A CN 110792588 B CN110792588 B CN 110792588B
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- Prior art keywords
- oil
- housing
- comb
- main shaft
- oil passage
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 44
- 238000005461 lubrication Methods 0.000 title claims abstract description 15
- 239000003921 oil Substances 0.000 claims abstract description 127
- 239000010687 lubricating oil Substances 0.000 claims abstract description 30
- 244000126211 Hericium coralloides Species 0.000 claims abstract description 24
- 230000001050 lubricating effect Effects 0.000 claims abstract description 15
- 238000007789 sealing Methods 0.000 claims description 26
- 230000007704 transition Effects 0.000 claims description 10
- 230000008878 coupling Effects 0.000 claims 1
- 238000010168 coupling process Methods 0.000 claims 1
- 238000005859 coupling reaction Methods 0.000 claims 1
- 238000011056 performance test Methods 0.000 abstract description 13
- 238000009434 installation Methods 0.000 description 5
- 230000000149 penetrating effect Effects 0.000 description 2
- 206010033799 Paralysis Diseases 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B51/00—Testing machines, pumps, or pumping installations
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
- General Details Of Gearings (AREA)
Abstract
本发明公开了一种带压力润滑油的传动润滑装置,包括液压站和润滑装置；润滑装置包括壳体，壳体上设有通孔，通孔内设有梳齿轴套，梳齿轴套与壳体之间设有压力油腔，壳体外部设有与压力油腔连接的进油口，梳齿轴套的侧壁上设有与压力油腔连接的第一油道，梳齿轴套的内侧壁上设有多个梳齿，梳齿轴套的两侧均设有轴承，轴承的外侧设有油封，轴承与油封之间设有穿过壳体的第三油道，第三油道的端部设有出油口；梳齿轴套内设有主轴，主轴穿过轴承和油封，主轴上设有与压力油腔连接的第二油道，主轴的一端设有盲孔，盲孔通过第五油道与第二油道连接。本发明对液压泵进行性能试验具有试验效率高和试验结果可靠性好的优点。
The invention discloses a transmission lubrication device with pressure lubricating oil, including a hydraulic station and a lubricating device; the lubricating device includes a housing, a through hole is provided on the housing, a comb-tooth shaft sleeve is provided in the through hole, a pressure oil chamber is provided between the comb-tooth shaft sleeve and the housing, an oil inlet connected to the pressure oil chamber is provided on the outside of the housing, a first oil passage connected to the pressure oil chamber is provided on the side wall of the comb-tooth shaft sleeve, a plurality of comb teeth are provided on the inner side wall of the comb-tooth shaft sleeve, bearings are provided on both sides of the comb-tooth shaft sleeve, an oil seal is provided on the outer side of the bearing, a third oil passage passing through the housing is provided between the bearing and the oil seal, and an oil outlet is provided at the end of the third oil passage; a main shaft is provided in the comb-tooth shaft sleeve, the main shaft passes through the bearing and the oil seal, a second oil passage connected to the pressure oil chamber is provided on the main shaft, a blind hole is provided at one end of the main shaft, and the blind hole is connected to the second oil passage through a fifth oil passage. The invention has the advantages of high test efficiency and good reliability of test results when performing performance tests on hydraulic pumps.
Description
Technical Field
The invention belongs to the field of detection devices of aviation hydraulic pumps, and particularly relates to an aviation hydraulic pump
Background
The hydraulic pump is used as a necessary core element of the hydraulic system, provides hydraulic energy for the whole hydraulic system, and the normal operation of the whole hydraulic system is influenced by the good or bad functions of the hydraulic pump. Once the hydraulic pump fails, the service performance of the hydraulic system is affected, the system is paralyzed more seriously, and the risk of out-of-control of a hydraulic actuating mechanism occurs, so that the reliability of the hydraulic pump is particularly important, performance tests must be carried out after the hydraulic pump is assembled, and particularly in the field of aerospace, the performance tests of the hydraulic pump are indispensable.
The transmission shaft is used as an important element for transmitting power and torque in the hydraulic pump, and the reliability of the structure of the transmission shaft has an important influence on the performance of the hydraulic pump. In the hydraulic system of the aircraft, the rotating speed of the hydraulic pump can reach 6000r/min, the front end of the transmission shaft is provided with a rectangular spline or an involute spline for bearing load transmission, the tail end of the transmission shaft is provided with a sealing ring, the front end of the transmission shaft is soaked with lubricating oil, the sealing ring is used for sealing the transmission shaft and preventing the lubricating oil from flowing to the rear end of the transmission shaft, the lubricating oil is used for lubricating the front end of the transmission shaft, and the lubricating oil is taken from the aircraft lubricating system and has a certain pressure (up to 0.3 MPa).
The performance test of the hydraulic pump comprises the test of the sealing performance of the sealing ring and the test of the load performance of the hydraulic pump. The optimal performance test of the hydraulic pump is to assemble the hydraulic pump to a test device, completely simulate the actual working state of the hydraulic pump, namely test the sealing performance of a sealing ring and the load performance of the hydraulic pump at the same time, but when completely simulating the actual working state of the hydraulic pump, a high-requirement oil seal is required to be arranged in the corresponding test device, and the oil seal can bear the pressure of 0.3MPa and the high rotating speed of 6000r/min at the same time. The existing oil seal cannot meet the requirements and is easy to fail. The performance test of the existing hydraulic pump is to separate the test of the sealing performance of the sealing ring from the test of the load performance of the hydraulic pump, the hydraulic pump does not work when the sealing performance of the sealing ring is tested, the transmission shaft does not rotate, lubricating oil with certain pressure is injected into the tail end of the transmission shaft through the test device, the sealing performance of the sealing ring is only detected when the transmission shaft is static, the lubricating oil in the test device is emptied when the load performance of the hydraulic pump is tested, the transmission shaft is fed into the transmission shaft to apply load to the hydraulic pump without oil pressure, and the load performance of the hydraulic pump is tested. The performance test of the existing hydraulic pump is carried out step by step, the test steps are tedious, the test efficiency is low, and the failure to simulate the actual working state of the hydraulic pump transmission shaft in the hydraulic system of the aircraft can lead to the fact that the sealing ring at the tail end of the transmission shaft is not leaked in the test due to insufficient test, and the reliability of the test result is poor in the actual use.
Therefore, the conventional test device has the defects of low test efficiency and poor reliability of test results when performing performance test on the hydraulic pump.
Disclosure of Invention
The invention aims to provide a transmission lubricating device with pressure lubricating oil. The invention has the advantages of high test efficiency and good test result reliability when carrying out performance test on the hydraulic pump.
The technical scheme of the invention is that the transmission lubrication device with pressure lubricating oil comprises a hydraulic station and a lubrication device;
The lubricating device comprises a shell, a through hole is formed in the shell, a comb tooth shaft sleeve is arranged in the through hole, a pressure oil cavity is formed between the comb tooth shaft sleeve and the shell, an oil inlet connected with the pressure oil cavity is formed in the outer portion of the shell, a first oil duct connected with the pressure oil cavity is formed in the side wall of the comb tooth shaft sleeve, a plurality of comb teeth are formed in the inner side wall of the comb tooth shaft sleeve, bearings are arranged on two sides of the comb tooth shaft sleeve, an oil seal is arranged on the outer side of each bearing, a third oil duct penetrating through the shell is arranged between each bearing and the oil seal, and an oil outlet is formed in the end portion of each third oil duct;
The comb tooth shaft sleeve is internally provided with a main shaft, the main shaft penetrates through the bearing and the oil seal, the main shaft is provided with a second oil duct connected with the pressure oil cavity, one end of the main shaft is provided with a blind hole, and the blind hole is connected with the second oil duct through a fifth oil duct.
In the transmission lubricating device with pressure lubricating oil, the blind hole is internally provided with the transition sleeve connected with the main shaft, and the inner wall of the transition sleeve is provided with the connecting structure.
In the transmission lubricating device with pressure lubricating oil, steps are arranged at two ends of the through hole, an adapter seat fixed with the shell is arranged in the steps, and the oil seal is fixed with the shell through the adapter seat.
In the transmission lubricating device with pressure lubricating oil, a connecting seat fixed with the shell is arranged on the outer side of the main shaft, the connecting seat is close to the end part of the main shaft, which is provided with a blind hole, and a combining structure is arranged on the connecting seat.
In the transmission lubricating device with pressure lubricating oil, a fourth oil duct is connected to the second oil duct or the third oil duct, and the fourth oil duct passes through the shell and then is connected with the hydraulic station through a throttle valve.
In the transmission lubricating device with pressure lubricating oil, the number of the comb teeth is two, 7 comb teeth are arranged in each group, and the two groups of comb teeth are respectively positioned at two sides of the first oil duct.
Compared with the prior art, the invention mainly improves the structure related to the oil seal, reduces the pressure of the lubricating oil by adding the comb teeth at the front end of the oil seal, prevents or reduces the oil seal from being affected by the oil pressure when the high-pressure lubricating oil is introduced into the lubricating device, and is not easy to fail. Therefore, the hydraulic pump performance test device has the advantages of high test efficiency and good test result reliability when being used for carrying out performance test on the hydraulic pump.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a schematic structural view of the lubricating apparatus.
Fig. 3 is an enlarged view at the comb teeth.
The drawing comprises a 1-hydraulic station, a 2-lubricating device, a 3-throttle valve, a 4-hydraulic pump, a 41-transmission shaft, a 42-sealing ring, a 5-clamp, a 201-shell, a 202-through hole, a 203-comb tooth shaft sleeve, a 204-pressure oil cavity, a 205-oil inlet, a 206-first oil duct, a 207-comb tooth, a 208-bearing, a 209-oil seal, a 210-third oil duct, a 211-oil outlet, a 212-main shaft, a 213-second oil duct, a 214-blind hole, a 215-transition sleeve, a 216-adapter, a 217-adapter, a 218-combination structure, a 219-fourth oil duct and a 220-fifth oil duct.
Detailed Description
The invention is further illustrated by the following figures and examples, which are not intended to be limiting.
Examples. The transmission lubrication device with pressure lubricating oil comprises a prior hydraulic station 1 and a lubrication device 2 as shown in figure 1;
The lubrication device 2 comprises a shell 201, a through hole 202 is formed in the shell 201, a comb tooth shaft sleeve 203 is arranged in the through hole 202, a pressure oil cavity 204 is formed between the comb tooth shaft sleeve 203 and the shell 201, the pressure oil cavity 204 is formed by an annular groove formed in the inner wall of the through hole, an oil inlet 205 connected with the pressure oil cavity 204 is formed in the outer portion of the shell 201, the pressure oil cavity 204 is connected with an oil outlet of a hydraulic station through the oil inlet 205, a first oil duct 206 connected with the pressure oil cavity 204 is formed in the side wall of the comb tooth shaft sleeve 203, a plurality of comb teeth 207 are formed in the inner side wall of the comb tooth shaft sleeve 203, bearings 208 are arranged on two sides of the comb tooth shaft sleeve 203, an oil seal 209 is arranged on the outer side of the bearings 208, an annular notch is formed in the inner side face of the oil seal 209, a third oil duct 210 penetrating through the shell 201 is formed in the end portion of the third oil duct 210, and the oil outlet 211 is connected with an oil return port of the hydraulic station 1;
A main shaft 212 is arranged in the comb-tooth shaft sleeve 203, the main shaft 212 passes through the bearing 208 and the oil seal 209, a second oil duct 213 connected with the pressure oil cavity 204 is arranged on the main shaft 212, the second oil duct 213 passes through the comb-tooth shaft sleeve 203, a blind hole 214 is arranged at one end of the main shaft 212, the blind hole 214 is connected with the second oil duct 213 through a fifth oil duct 220,
A transition sleeve 215 connected with the main shaft 212 is arranged in the blind hole 214, and a connecting structure is arranged on the inner wall of the transition sleeve 215, wherein the connecting structure refers to a rectangular spline groove or an involute spline groove matched with the front end of the transmission shaft of the hydraulic pump.
Steps are arranged at two ends of the through hole 202, an adapter 216 fixed with the shell 201 is arranged in the steps, and the oil seal 209 is fixed with the shell 201 through the adapter 216.
The outside of the main shaft 212 is provided with a connecting seat 217 fixed with the shell 201, the connecting seat 217 is close to the end of the main shaft 212 provided with a blind hole 214, the connecting seat 217 is provided with a combining structure 218, and the combining structure 218 is an annular installation edge.
The second oil passage 213 or the third oil passage 210 is connected with a fourth oil passage 219, and the fourth oil passage 219 sequentially passes through the main shaft 212 and the housing 201 and is connected with an oil return port of the hydraulic station 1 through the throttle valve 3.
The number of the comb teeth 207 is two, 7 comb teeth 207 are arranged in each group, the two groups of comb teeth 207 are respectively positioned at two sides of the first oil duct 206, and a gap of 0.05+/-0.01 mm is formed between the comb tooth shaft sleeve 203 and the main shaft 212.
The oil pressure in the fourth oil passage 219 is made to be 0.3MPa or less by adjusting the throttle valve 3.
The hydraulic pump is installed on the invention, namely, the outer side of the transmission shaft of the hydraulic pump 4 is provided with an annular installation edge, the transmission shaft 41 of the hydraulic pump 4 is aligned with the transition sleeve 215, the transmission shaft 41 is inserted into the transition sleeve 215, the installation edge of the hydraulic pump 4 is combined with the installation edge of the invention, and the two installation edges are fixed together by the clamp 5.
According to the existing measuring method of the load performance of the hydraulic pump, one end of a main shaft 212 is connected with a motor, the motor drives the main shaft 212 to rotate, the main shaft 212 drives a transmission shaft 41 to rotate through a transition sleeve 215, the transmission shaft 41 is provided with a load, the state of the hydraulic pump in normal operation is simulated, and the load of the hydraulic pump is adjusted by adjusting the rotating speed of the motor, so that the load performance of the hydraulic pump is measured.
While the transmission shaft 41 rotates, the hydraulic station 1 outputs high-pressure lubricating oil, the lubricating oil sequentially passes through the oil inlet 205, the first oil duct 206, the pressure oil cavity 204, the second oil duct 213 and the fifth oil duct 220 to reach the blind hole 214 to lubricate the transmission shaft 41, the lubricating oil reaches the sealing ring 42, and the sealing ring 42 bears oil pressure. By adjusting the throttle valve 3 to adjust the magnitude of the oil pressure borne by the seal ring 42, when the oil pressure is higher than the set value of the throttle valve 3, lubricating oil flows back to the hydraulic station from the fourth oil passage 219 and the throttle valve 3, and when the set value of the throttle valve 3 reaches 0.3MPa, the hydraulic station 1 needs to supply the lubricating oil with the flow rate not less than 6L/min. After the measurement is finished, the hydraulic pump is disassembled, whether oil leakage exists at the sealing ring is observed, if so, the sealing performance of the sealing ring is unqualified, otherwise, the sealing performance of the sealing ring is qualified.
The invention can simultaneously realize the adjustment of the load of the hydraulic pump and the adjustment of the bearing pressure of the sealing ring, completely simulate various states which can be met by the actual working of the hydraulic pump, and improve the reliability of the test.
The invention solves the problem that the oil seal is easy to fail, namely high-pressure lubricating oil in the second oil duct 213 flows to two sides through the comb teeth 207, is decompressed through the comb teeth 207, passes through the bearing 208 to reach the oil seal 209, dissipates heat of the oil seal 209, takes away friction heat between the oil seal 209 and the main shaft 212, and then flows back to the hydraulic station 1 from the third oil duct 210 and the oil outlet 211. Because the pressure applied to the oil seal 209 is small, the oil seal 209 cannot be pressed on the main shaft 212 by the pressure, the friction heat between the oil seal 209 and the main shaft 212 is small, the friction heat can be timely taken away, the oil seal 209 is not easy to damage and is not easy to fail, and the oil seal can be normally used on the invention.
Therefore, the hydraulic pump performance test device has the advantages of high test efficiency and good test result reliability when being used for carrying out performance test on the hydraulic pump.
Claims (6)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911255352.0A CN110792588B (en) | 2019-12-10 | 2019-12-10 | Transmission lubrication with pressurized oil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911255352.0A CN110792588B (en) | 2019-12-10 | 2019-12-10 | Transmission lubrication with pressurized oil |
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| CN110792588A CN110792588A (en) | 2020-02-14 |
| CN110792588B true CN110792588B (en) | 2025-04-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911255352.0A Active CN110792588B (en) | 2019-12-10 | 2019-12-10 | Transmission lubrication with pressurized oil |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112879447B (en) * | 2021-03-09 | 2024-03-08 | 广西玉柴机器股份有限公司 | Connecting structure of transmission shaft sleeve and oil pump integrated with complex oil duct |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN210949090U (en) * | 2019-12-10 | 2020-07-07 | 力源液压系统（贵阳）有限公司 | Transmission lubricating device with pressure lubricating oil |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH0635932U (en) * | 1992-10-13 | 1994-05-13 | 株式会社 神崎高級工機製作所 | Load test equipment |
| JP5916394B2 (en) * | 2012-01-18 | 2016-05-11 | ジャパン・ハムワージ株式会社 | Steering machine test equipment |
| CN107100940A (en) * | 2017-05-19 | 2017-08-29 | 温岭市九洲电机制造有限公司 | A kind of lubrication system of motor |
| CN208254783U (en) * | 2018-05-30 | 2018-12-18 | 顺气压缩机技术（苏州）有限公司 | A kind of experimental rig for screw air compressor |
| CN108980095A (en) * | 2018-08-17 | 2018-12-11 | 苏州欧拉透平机械有限公司 | Centrifugal compressor oil enveloping structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN210949090U (en) * | 2019-12-10 | 2020-07-07 | 力源液压系统（贵阳）有限公司 | Transmission lubricating device with pressure lubricating oil |
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Address after: 550018 No.1, 2nd Floor, Building 102, Beiya Village, Xintianzhai, Wudang District, Guiyang City, Guizhou Province Applicant after: Guizhou Anfei Precision Manufacturing Co.,Ltd. Address before: 550018 No. 1, floor 1, Building 102 and floor 2, building 113, Beiya Road, xintianzhai, Wudang District, Guiyang City, Guizhou Province Applicant before: LIYUAN HYDRAULIC SYSTEM (GUIYANG) Co.,Ltd. |
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