CN110792588A - Transmission lubricating device with pressure lubricating oil - Google Patents
Transmission lubricating device with pressure lubricating oil Download PDFInfo
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- CN110792588A CN110792588A CN201911255352.0A CN201911255352A CN110792588A CN 110792588 A CN110792588 A CN 110792588A CN 201911255352 A CN201911255352 A CN 201911255352A CN 110792588 A CN110792588 A CN 110792588A
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- 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
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- General Engineering & Computer Science (AREA)
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Abstract
The invention discloses a transmission lubricating device with pressure lubricating oil, which comprises a hydraulic station and a lubricating device, wherein the hydraulic station is connected with the lubricating device through a hydraulic oil pipe; 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 arranged on the inner side wall of the comb tooth shaft sleeve, bearings are arranged on two sides of the comb tooth shaft sleeve respectively, oil seals are arranged on the outer sides of the bearings, a third oil duct penetrating through the shell is formed; the main shaft penetrates through the bearing and the oil seal, a second oil duct connected with the pressure oil cavity is arranged on the main shaft, a blind hole is formed in one end of the main shaft, and the blind hole is connected with the second oil duct through a fifth oil duct. The hydraulic pump performance test device has the advantages of high test efficiency and good test result reliability when used for performing performance test on the hydraulic pump.
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 performance of the function of the hydraulic pump. In case the hydraulic pump breaks down, can influence hydraulic system's performance, more serious will lead to the system to be paralysed, the danger that hydraulic actuator is out of control appears, consequently, the reliability of hydraulic pump seems especially important, must carry out the performance test after the hydraulic pump assembly is accomplished, especially in aerospace field, the performance test of hydraulic pump is indispensable.
The reliability of the structure of the propeller shaft, which is an important element for transmitting power and torque in the hydraulic pump, has an important influence on the performance of the hydraulic pump. In a hydraulic system of an airplane, the rotating speed of a hydraulic pump can reach 6000r/min, a rectangular spline or an involute spline is arranged at the front end of a transmission shaft and used for bearing load transfer, a sealing ring is arranged at the tail end of the transmission shaft, lubricating oil is soaked on the front end of the transmission shaft and 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 a lubrication system of the airplane and has certain pressure (reaching 0.3 MPa).
The performance test of the hydraulic pump comprises a test on the sealing performance of the sealing ring and a test on 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 and completely simulate the actual working state of the hydraulic pump, namely to test the sealing performance of a sealing ring and the load performance of the hydraulic pump, but when the actual working state of the hydraulic pump is completely simulated, a high-requirement oil seal needs 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 can not meet the requirements and is easy to lose efficacy. Therefore, the performance test of the existing hydraulic pump is to separately test the sealing performance of the sealing ring and the load performance of the hydraulic pump; when the sealing performance of the sealing ring is tested, the hydraulic pump does not work, 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, and only the sealing performance of the sealing ring when the transmission shaft is static is detected; when the load performance of the hydraulic pump is tested, lubricating oil in the testing device is drained, and the transmission shaft is introduced to the hydraulic pump to apply load under the condition that the transmission shaft does not have oil pressure, so that the load performance of the hydraulic pump is tested. Because the performance test of the existing hydraulic pump is carried out step by step, the test steps are complicated, and the test efficiency is low; and the actual working state of the transmission shaft of the hydraulic pump in the hydraulic system of the airplane cannot be simulated, so that the sealing ring at the tail end of the transmission shaft cannot leak oil in the test due to insufficient test, the oil leaks in the actual use, and the reliability of the test result is poor.
Therefore, the performance test of the hydraulic pump by the conventional test device has the defects of low test efficiency and poor reliability of test results.
Disclosure of Invention
The invention aims to provide a transmission lubricating device with pressure lubricating oil. The hydraulic pump performance test device has the advantages of high test efficiency and good test result reliability when used for performing performance test on the hydraulic pump.
The technical scheme of the invention is as follows: the transmission lubricating device with pressure lubricating oil comprises a hydraulic station and a lubricating 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 arranged on the inner side wall of the comb tooth shaft sleeve, bearings are arranged on two sides of the comb tooth shaft sleeve respectively, oil seals are arranged on the outer sides of the bearings, a third oil duct penetrating through the shell is formed;
the main shaft penetrates through the bearing and the oil seal, a second oil duct connected with the pressure oil cavity is arranged on the main shaft, a blind hole is formed in one end of the main shaft, 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 aforementioned transmission lubricating device with pressure lubricating oil, the two ends of the through hole are both provided with steps, the steps are internally provided with adapter seats fixed with the shell, and the oil seal is fixed with the shell through the adapter seats.
In the transmission lubricating device with pressure lubricating oil, the outer side of the main shaft is provided with the connecting seat fixed with the shell, the end part of the connecting seat, which is close to the main shaft and is provided with the blind hole, is provided with the combining structure.
In the aforementioned transmission lubricating device with pressure lubricating oil, the second oil duct or the third oil duct is connected to a fourth oil duct, and the fourth oil duct passes through the housing and then is connected to the hydraulic station through the throttle valve.
In the transmission lubricating device with pressure lubricating oil, the number of the comb teeth is two, and each group of the comb teeth is 7, and the two groups of the comb teeth are respectively located on two sides of the first oil duct.
Compared with the prior art, the invention mainly improves the structure related to the oil seal, the comb teeth are added at the front end of the oil seal which receives oil to reduce the pressure of the lubricating oil, so that when high-pressure lubricating oil is introduced into the lubricating device, the oil seal is free from or less affected by oil pressure, and the oil seal is not easy to lose efficacy. Therefore, the hydraulic pump performance test device has the advantages of high test efficiency and good test result reliability when used for performing the 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 device.
Fig. 3 is an enlarged view at the comb teeth.
The labels in the figures are: 1-hydraulic station, 2-lubricating device, 3-throttling valve, 4-hydraulic pump, 41-transmission shaft, 42-sealing ring, 5-clamp, 201-shell, 202-through hole, 203-comb bush, 204-pressure oil cavity, 205-oil inlet, 206-first oil channel, 207-comb, 208-bearing, 209-oil seal, 210-third oil channel, 211-oil outlet, 212-main shaft, 213-second oil channel, 214-blind hole, 215-transition sleeve, 216-adapter, 217-connecting seat, 218-combination structure, 219-fourth oil channel, 220-fifth oil channel.
Detailed Description
The invention is further illustrated by the following figures and examples, which are not to be construed as limiting the invention.
Examples are given. The transmission lubricating device with pressure lubricating oil is shown in figure 1 and comprises a conventional hydraulic station 1 and a lubricating device 2;
the lubricating device 2 comprises a shell 201, a through hole 202 is arranged on the shell 201, a comb tooth shaft sleeve 203 is arranged in the through hole 202, a pressure oil chamber 204 is arranged between the comb tooth shaft sleeve 203 and the shell 201, the pressure oil cavity 204 is formed by an annular groove arranged on the inner wall of the through hole, an oil inlet 205 connected with the pressure oil cavity 204 is arranged outside the shell 201, the pressure oil cavity 204 is connected with an oil outlet of the hydraulic station through the oil inlet 205, a first oil duct 206 connected with the pressure oil cavity 204 is arranged on the side wall of the comb tooth shaft sleeve 203, a plurality of comb teeth 207 are arranged on 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 each bearing 208, an annular notch is arranged on the end face of the inner side of each oil seal 209, a third oil duct 210 penetrating through the shell 201 is arranged between each bearing 208 and each oil seal 209, an oil outlet 211 is;
a main shaft 212 is arranged in the comb bush 203, the main shaft 212 penetrates through the bearing 208 and the oil seal 209, a second oil channel 213 connected with the pressure oil chamber 204 is arranged on the main shaft 212, the second oil channel 213 penetrates through the comb bush 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 channel 213 through a fifth oil channel 220,
the blind hole 214 is internally provided with a transition sleeve 215 connected with the main shaft 212, and the inner wall of the transition sleeve 215 is provided with a connecting structure which is a rectangular spline groove or an involute spline groove matched with the front end of the hydraulic pump transmission shaft.
Steps are arranged at two ends of the through hole 202, an adapter 216 fixed with the shell 201 is arranged in each step, and the oil seal 209 is fixed with the shell 201 through the adapter 216.
The outer side of the main shaft 212 is provided with a connecting seat 217 fixed with the shell 201, the end part of the connecting seat 217, which is close to the main shaft 212 and is provided with the blind hole 214, is provided with a combining structure 218, and the combining structure 218 is an annular mounting edge.
The second oil channel 213 or the third oil channel 210 is connected with a fourth oil channel 219, and the fourth oil channel 219 sequentially passes through the main shaft 212 and the housing 201 and then 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, each group is 7, the two groups of the comb teeth 207 are respectively located on 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 less than or equal to 0.3MPa by adjusting the throttle valve 3.
Installation of the hydraulic pump on the invention: the outer side of the transmission shaft of the hydraulic pump 4 is provided with an annular mounting edge, a 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 mounting edge of the hydraulic pump 4 is combined with the mounting edge of the invention, and the two mounting edges are fixed together by the clamp 5.
The working principle is as follows: according to the existing method for measuring the load performance of the hydraulic pump, a motor is connected to one end of a main shaft 212, 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, a load is arranged on the transmission shaft 41, the state of the hydraulic pump in normal working is simulated, the load of the hydraulic pump is adjusted by adjusting the rotating speed of the motor, and the load performance of the hydraulic pump is measured.
When the transmission shaft 41 rotates, the hydraulic station 1 outputs high-pressure lubricating oil, the lubricating oil reaches the blind hole 214 through the oil inlet 205, the first oil channel 206, the pressure oil chamber 204, the second oil channel 213 and the fifth oil channel 220 in sequence to lubricate the transmission shaft 41, the lubricating oil reaches the sealing ring 42, and the sealing ring 42 bears oil pressure. The size of the oil pressure borne by the sealing ring 42 is adjusted by adjusting the throttle valve 3, when the oil pressure is higher than the set value of the throttle valve 3, the lubricating oil flows back to the hydraulic station from the fourth oil duct 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 provide the lubricating oil with the flow rate not less than 6L/min. And after the measurement is finished, the hydraulic pump is detached, whether oil leakage exists at the sealing ring is observed, if oil leakage exists, the sealing performance of the sealing ring is unqualified, and if not, the sealing ring is qualified.
The invention can simultaneously realize the adjustment of the load of the hydraulic pump and the adjustment of the pressure borne by the sealing ring, completely simulate various states which can be met by the actual work of the hydraulic pump, and improve the reliability of the test.
The invention solves the problem that the oil seal is easy to lose efficacy: the high-pressure lubricating oil in the second oil passage 213 flows to both sides through the comb teeth 207, is decompressed by the comb teeth 207, passes through the bearing 208 to reach the oil seal 209, dissipates heat of the oil seal 209, carries 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 passage 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 taken away in time, and the oil seal 209 is not easy to damage and lose efficacy, so that the oil seal can be normally used in the invention.
Therefore, the hydraulic pump performance test device has the advantages of high test efficiency and good test result reliability when used for performing the performance test on the hydraulic pump.
Claims (8)
1. Take pressure lubricating oil's transmission lubricating arrangement which characterized in that: comprises a hydraulic station (1) and a lubricating device (2);
the lubricating device (2) comprises a shell (201), a through hole (202) is formed in the shell (201), a comb bush (203) is arranged in the through hole (202), a pressure oil cavity (204) is formed between the comb bush (203) and the shell (201), an oil inlet (205) connected with the pressure oil cavity (204) is formed in the outer portion of the shell (201), a first oil duct (206) connected with the pressure oil cavity (204) is formed in the side wall of the comb bush (203), a plurality of comb teeth (207) are arranged on the inner side wall of the comb bush (203), bearings (208) are arranged on two sides of the comb bush (203), an oil seal (209) is arranged on the outer side of each bearing (208), a third oil duct (210) penetrating through the shell (201) is formed between each bearing (208) and each oil seal (209), and an oil outlet (211);
a main shaft (212) is arranged in the comb tooth shaft sleeve (203), the main shaft (212) penetrates through the bearing (208) and the oil seal (209), a second oil channel (213) connected with the pressure oil cavity (204) is arranged on the main shaft (212), a blind hole (214) is formed in one end of the main shaft (212), and the blind hole (214) is connected with the second oil channel (213) through a fifth oil channel (220).
2. The pressurized lube oil drive lubrication system of claim 1 further comprising: 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).
3. The pressurized lube oil drive lubrication system of claim 1 further comprising: the two ends of the through hole (202) are provided with steps, an adapter (216) fixed with the shell (201) is arranged in each step, and the oil seal (209) is fixed with the shell (201) through the adapter (216).
4. The pressurized lube oil drive lubrication system of claim 1 further comprising: the outer side of the main shaft (212) is provided with a connecting seat (217) fixed with the shell (201), the end part of the connecting seat (217) close to the main shaft (212) and provided with a blind hole (214), and the connecting seat (217) is provided with a combination structure (218).
5. The pressurized lube oil drive lubrication system of claim 1 further comprising: the second oil channel (213) or the third oil channel (210) is connected with a fourth oil channel (219), and the fourth oil channel (219) penetrates through the shell (201) and then is connected with the hydraulic station (1) through the throttle valve (3).
6. The pressurized lube oil drive lubrication system of claim 1 further comprising: the number of the comb teeth (207) is two, each group is 7, and the two groups of the comb teeth (207) are respectively positioned on two sides of the first oil duct (206).
7. The pressurized lube oil drive lubrication system of claim 1 further comprising: and a gap of 0.05 +/-0.01 mm is formed between the comb tooth shaft sleeve (203) and the main shaft (212).
8. The pressurized lube oil drive lubrication system of claim 5 further comprising: the oil pressure in the fourth oil duct (219) is less than or equal to 0.3MPa by adjusting the throttle valve (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911255352.0A CN110792588A (en) | 2019-12-10 | 2019-12-10 | Transmission lubricating device with pressure lubricating oil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911255352.0A CN110792588A (en) | 2019-12-10 | 2019-12-10 | Transmission lubricating device with pressure lubricating oil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110792588A true CN110792588A (en) | 2020-02-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911255352.0A Pending CN110792588A (en) | 2019-12-10 | 2019-12-10 | Transmission lubricating device with pressure lubricating oil |
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| Country | Link |
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| CN (1) | CN110792588A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112879447A (en) * | 2021-03-09 | 2021-06-01 | 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 |
-
2019
- 2019-12-10 CN CN201911255352.0A patent/CN110792588A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112879447A (en) * | 2021-03-09 | 2021-06-01 | 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 |
| 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 |
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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. |