CN106769044B - Hydraulic and pneumatic auxiliary device for flexible thin-wall bearing life testing machine - Google Patents
Hydraulic and pneumatic auxiliary device for flexible thin-wall bearing life testing machine Download PDFInfo
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- CN106769044B CN106769044B CN201611221816.2A CN201611221816A CN106769044B CN 106769044 B CN106769044 B CN 106769044B CN 201611221816 A CN201611221816 A CN 201611221816A CN 106769044 B CN106769044 B CN 106769044B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/04—Bearings
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M5/00—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings
- G01M5/0075—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings by means of external apparatus, e.g. test benches or portable test systems
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Abstract
The invention discloses a hydraulic and pneumatic auxiliary device for a flexible thin-wall bearing life test machine, which comprises an electric spindle, a loading device, a hydraulic auxiliary device and a pneumatic auxiliary device, wherein the electric spindle, the loading device and the hydraulic auxiliary device are connected through oil pipes, the electric spindle is connected with the pneumatic auxiliary device through an air pipe, the hydraulic auxiliary device is used for realizing cooling operation of the electric spindle and lubrication operation of the loading device, and the pneumatic auxiliary device is used for realizing clamping and loosening operation of the electric spindle and the loading device and oil return operation after lubrication of the loading device. Compared with the prior art, the invention provides a set of cooling system, a set of pneumatic clamping and loosening device and a set of lubricating system for the flexible precise thin-wall bearing fault diagnosis life testing machine, solves the problem of lubricating oil return more skillfully, and has the advantages of ingenious structure, simplicity in operation, safety, reliability, high automation degree and the like.
Description
Technical Field
The invention relates to a matched hydraulic and pneumatic auxiliary device for a flexible precise thin-wall bearing fault diagnosis life tester, which is particularly suitable for the fault diagnosis of a precise flexible thin-wall bearing for a harmonic reducer, in particular to a hydraulic and pneumatic auxiliary device for a life test tester based on a sensor technology, and belongs to the field of mechanical fault diagnosis.
Technical Field
The harmonic reducer is a wave generator which can make the flexible wheel produce controllable elastic deformation, and utilizes the controllable elastic deformation of the flexible bearing to make motion and power transmission. The harmonic reducer is regarded as the transmission gear for the robot with excellent performances such as high reduction ratio, small mass, light weight, high transmission precision and the like, and is widely applied to transmission systems in the fields of various spacecrafts, airships, robots, radar equipment, medical equipment and the like.
The precise flexible thin-wall bearing is a core component of the harmonic reducer and plays a vital role in the overall performance of the harmonic reducer. Under the working state, the precise flexible thin-wall bearing not only bears the elastic deformation under the extrusion expansion of the elliptical shaft which is precisely matched with the inner ring of the thin-wall bearing, but also bears the alternating stress generated by the operation of the precise flexible thin-wall bearing, and under the condition of non-ideal working conditions, the precise flexible thin-wall bearing also bears different static load or dynamic load from the outside. Therefore, in the development process of the flexible thin-wall bearing for the harmonic reducer, the stability, the rotation precision and the service life of the precise flexible thin-wall bearing are required to be tested, and the industrial production can be put into practice after each performance meets the requirements, so that the bottleneck problem of core parts of industrial robots in China is solved, the support is provided for realizing the industrialization and wide application of the industrial robots in China, but few reports are given to the flexible thin-wall bearing, the service life tester and the flexible thin-wall fault diagnosis method thereof at home and abroad, and the hydraulic and pneumatic auxiliary device for the service life tester of the flexible thin-wall bearing is less given.
The fault diagnosis of the precise flexible thin-wall bearing for the harmonic reducer and the development of the life tester should simulate the life test of the flexible thin-wall bearing under the actual working condition as far as possible. The invention provides a hydraulic and pneumatic auxiliary device for a flexible thin-wall bearing life tester, which is an auxiliary device for a flexible precise thin-wall bearing fault diagnosis life tester.
Disclosure of Invention
The invention aims to provide an auxiliary device for simulating fault diagnosis and life test testing machines of flexible thin-wall bearings in harmonic reducers in dynamic and static loading modes under actual working conditions, so that the fault diagnosis and life test testing machines can run continuously and reliably when the life of the bearings is tested.
The invention is realized by adopting the following technical scheme:
the utility model provides a flexible thin wall bearing life test machine hydraulic pressure and atmospheric pressure auxiliary device, includes electric main shaft, loading device, hydraulic pressure auxiliary device, atmospheric pressure auxiliary device, electric main shaft and loading device pass through oil pipe interconnect with hydraulic pressure auxiliary device, electric main shaft with atmospheric pressure auxiliary device passes through the trachea and links together, hydraulic pressure auxiliary device is used for realizing to electric main shaft's cooling operation, to loading device's lubrication operation, atmospheric pressure auxiliary device is used for realizing electric main shaft with loading device's clamp with loosen the operation, the oil return operation after loading device lubrication.
Further, the hydraulic auxiliary device comprises an oil tank, a main driving pump, an overflow valve, a pressure gauge, a cooling electromagnetic directional valve, a lubricating electromagnetic directional valve, a cooling pressure reducing valve, a lubricating pressure reducing valve, an oil pipe, a lubricating oil inlet nozzle, a lubricating oil outlet nozzle, an oil return one-way valve, a filter, a cooling oil nozzle and a clamping and loosening air nozzle, wherein the main driving pump, the overflow valve, the pressure gauge, the cooling electromagnetic directional valve, the lubricating electromagnetic directional valve, the cooling pressure reducing valve, the lubricating pressure reducing valve and the oil return one-way valve are fixed on the oil tank through bolts, the overflow valve is connected with an oil outlet of the main driving pump and is connected with the pressure gauge on the oil pipe, the main driving pump is connected with an oil inlet P of the cooling electromagnetic directional valve and an oil inlet P of the lubricating electromagnetic directional valve, the cooling electromagnetic directional valve is connected with an oil return port T of the lubricating electromagnetic directional valve and then is put into the oil tank, an oil outlet A of the cooling electromagnetic directional valve is connected with the cooling pressure reducing valve, the other end of the cooling electromagnetic directional valve is connected with the cooling oil nozzle arranged on the electric spindle through the oil pipe, the oil return electromagnetic directional valve is connected with the oil return device, the other end is connected with the oil outlet valve is connected with the lubricating pressure reducing valve, and the oil return device is connected with the lubricating pressure reducing valve, and the other end is connected with the lubricating device.
Further, the air pressure auxiliary device comprises an air pump, a water-gas separator, a clamping and loosening reversing valve, an oil return reversing valve, an air pipe and a clamping and loosening air tap, wherein an air outlet of the air pump is connected with the water-gas separator, an outlet end of the water-gas separator is connected with an air inlet P of the clamping and loosening reversing valve, an outlet end of the water-gas separator is connected with the air inlet P of the oil return reversing valve, an air outlet A and an air return port B of the clamping and loosening reversing valve are respectively connected with the clamping and loosening air tap arranged on the electric spindle, and an air outlet A of the oil return reversing valve is connected with an oil return port B of the lubricating electromagnetic reversing valve.
Further, the hydraulic auxiliary device further comprises a heat dissipation device, wherein the heat dissipation device is arranged at the top of the oil tank of the hydraulic auxiliary device and used for cooling hydraulic oil in the oil tank.
Further, the heat dissipation device comprises a heat dissipation oil pump and a radiator, wherein the heat dissipation oil pump and the radiator are arranged on the oil tank, an oil inlet of the heat dissipation oil pump is connected with the oil tank, an oil inlet of the radiator is connected with an oil outlet of the heat dissipation oil pump, and an oil outlet of the radiator is directly connected with the oil tank.
Further, the radiator is an air-cooled radiator.
Compared with the prior art, the invention provides a set of cooling system, a set of pneumatic clamping and loosening device and a set of lubricating system for the flexible precise thin-wall bearing fault diagnosis life testing machine, and under the premise of meeting the functions of automatic lubrication, cooling, clamping and loosening of the life testing machine, the oil return electromagnetic valve, the filter and the one-way valve are additionally arranged according to the siphoning phenomenon because the oil return path of the axial loading device is not easy to realize automatic oil return, thereby more skillfully solving the problem of lubricating oil return.
Drawings
FIG. 1 is a schematic connection diagram of hydraulic and pneumatic auxiliary devices for a flexible thin-wall bearing life tester according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a failure diagnosis life tester according to an embodiment of the present invention.
The figure shows: the device comprises an oil tank 1, a main driving pump 2, an overflow valve 3, a pressure gauge 4, a cooling electromagnetic reversing valve 5, a lubrication electromagnetic reversing valve 6, a cooling pressure reducing valve 7, a lubrication pressure reducing valve 8, an oil pipe 9, a lubrication oil inlet nozzle 10, a lubrication oil outlet nozzle 11, an oil return one-way valve 12, a filter 13, an air pump 14, a water-gas separator 15, a clamping and loosening reversing valve 16, an air pipe 17, an oil return reversing valve 18, a heat dissipation oil pump 19, a radiator 20, a cooling oil nozzle 21, a clamping and loosening air nozzle 22, an electric spindle 23 and a loading device 24.
Detailed Description
The following specific examples are not intended to be exhaustive or to limit the invention to the precise forms disclosed, but are not intended to limit the invention to the precise forms disclosed:
as shown in fig. 1 and 2: the utility model provides a flexible thin wall bearing life test machine hydraulic pressure and atmospheric pressure auxiliary device, includes electric main shaft 23, loading device 24, hydraulic pressure auxiliary device, heat abstractor, atmospheric pressure auxiliary device, electric main shaft 23 and loading device 24 pass through oil pipe 9 interconnect with the hydraulic pressure auxiliary device, electric main shaft 23 with atmospheric pressure auxiliary device passes through trachea 17 to be connected together, hydraulic pressure auxiliary device is used for realizing to electric main shaft 23's cooling operation, to the lubrication operation of loading device 24, atmospheric pressure auxiliary device is used for realizing electric main shaft 23 with the clamping of loading device 24 and loosen the operation, the oil return operation after the loading device 24 lubrication. The heat dissipation device is arranged at the top of the oil tank 1 of the hydraulic auxiliary device and is used for cooling hydraulic oil in the oil tank 1.
Specifically, the hydraulic auxiliary device comprises an oil tank 1, a main driving pump 2, an overflow valve 3, a pressure gauge 4, a cooling electromagnetic directional valve 5, a lubricating electromagnetic directional valve 6, a cooling relief valve 7, a lubricating relief valve 8, an oil pipe 9, a lubricating oil inlet nozzle 10, a lubricating oil outlet nozzle 11, an oil return one-way valve 12, a filter 13, a cooling oil nozzle 21 and a clamping and loosening air nozzle 22, wherein the main driving pump 2, the overflow valve 3, the pressure gauge 4, the cooling electromagnetic directional valve 5, the lubricating electromagnetic directional valve 6, the cooling relief valve 7, the lubricating relief valve 8 and an oil return one-way valve 12 are fixed on the oil tank 1 through bolts, the overflow valve 3 is connected with an oil outlet of the main driving pump 2 and is connected with the pressure gauge 4 on the oil pipe, the main driving pump 2 is connected with an oil inlet P of the cooling electromagnetic directional valve 5 and the lubricating electromagnetic directional valve 6, the cooling electromagnetic directional valve 5 is connected with an oil return opening T of the lubricating electromagnetic directional valve 6 through the oil pipe 9 and then discharged into the oil tank 1, the cooling electromagnetic directional valve 5A is connected with the cooling relief valve 7, the oil outlet 7 is connected with the cooling electromagnetic directional valve 7 through the oil outlet nozzle 9 and is connected with the oil outlet of the lubricating electromagnetic directional valve 6 through the oil pipe 9, the other end is connected with the oil outlet of the lubricating electromagnetic directional valve 6B is connected with the lubricating electromagnetic directional valve 6 through the oil pipe 9, the other end is connected with the oil outlet valve 2 through the oil outlet 9 and the oil outlet is connected with the oil outlet port 1 through the oil pipe 24 and the oil outlet valve 2B is arranged, the other end is connected with the oil outlet device is connected with the oil outlet end of the lubricating electromagnetic directional valve is connected with the oil valve 3 through the oil valve 3B and the oil valve is connected with the oil valve 3, the other end of the filter 13 is connected with an oil return port B of the lubrication electromagnetic directional valve 6.
Specifically, the air pressure auxiliary device comprises an air pump 14, a water-gas separator 15, a clamping and loosening reversing valve 16, an oil return reversing valve 18, an air pipe 17 and a clamping and loosening air tap 22, wherein an air outlet of the air pump 14 is connected with the water-gas separator 15, an outlet end of the water-gas separator 15 is connected with an air inlet P of the clamping and loosening reversing valve 16, an outlet end of the water-gas separator 15 is connected with an air inlet P of the oil return reversing valve 18, an air outlet A and an air return opening B of the clamping and loosening reversing valve 16 are respectively connected with the clamping and loosening air tap 22 arranged on the electric spindle 23, and an air outlet A of the oil return reversing valve 18 is connected with an oil return opening B of the lubricating electromagnetic reversing valve 6.
Specifically, the heat dissipating device comprises a heat dissipating oil pump 19 and a heat dissipating device 20, wherein the heat dissipating device 20 is an air-cooled heat dissipating device, the heat dissipating oil pump 19 and the heat dissipating device 20 are arranged on the oil tank 1, an oil inlet of the heat dissipating oil pump 19 is connected with the oil tank 1, an oil inlet of the heat dissipating device 20 is connected with an oil outlet of the heat dissipating oil pump 19, and an oil outlet of the heat dissipating device 20 is directly connected with the oil tank 1.
The specific working procedure of this embodiment is as follows:
when the flexible precise thin-wall bearing fault diagnosis life testing machine is started, a main power supply is started to electrify equipment, and then the hydraulic and pneumatic auxiliary device for the flexible thin-wall bearing life testing machine in the embodiment is started: firstly, the main driving pump 2, the air pump 14 and the heat dissipation oil pump 19 are started, the heat dissipation device starts to work, the air cooling is carried out, meanwhile, the electromagnetic valve is not electrified when the clamping and loosening reversing valve 16 works at a first working position, the air inlet P and the air outlet A of the clamping and loosening reversing valve 16 are communicated, the electric spindle 23 can clamp the bearing installation device, the electric spindle 23 is prevented from throwing out the bearing installation device in the rotating process, if the electromagnetic valve is electrified when the clamping and loosening reversing valve 16 works at a second working position, the air inlet P and the air return opening B of the clamping and loosening reversing valve 16 are communicated, the bearing installation device on the electric spindle 23 can be replaced, meanwhile, the electromagnetic valve is not electrified when the oil return reversing valve 18 works at the first working position, the air inlet P and the air outlet A of the oil return reversing valve 18 are communicated, negative pressure is generated on a lubricating oil return pipeline, lubricating oil accumulated by the loading device 24 is enabled to return to the oil return opening B of the lubricating electromagnetic reversing valve 6 through the oil return one-way valve 12 and the filter 13, and the lubricating oil can be enabled to return to the oil tank 1 after the lubricating electromagnetic reversing valve 6 is electrified; and in the second step, the cooling electromagnetic directional valve 5 and the lubricating electromagnetic directional valve 6 are started, so that the electric main shaft 23 is provided with cooling lubricating oil to pass through, the flow rate of the cooling lubricating oil can be regulated by regulating the cooling pressure reducing valve 7, meanwhile, the lubricating electromagnetic directional valve 6 is started, the loading device 24 can obtain lubricating oil, then the lubricating oil is sucked back into the oil tank 1 by the negative pressure generated by the air pump 14, and when the cooling electromagnetic directional valve 5 and the lubricating electromagnetic directional valve 6 are not started, the oil pumped by the main driving pump 2 is directly returned to the oil tank 1 from the oil inlet P to the oil return T of the cooling electromagnetic directional valve 5.
The described embodiments are only preferred examples of the present invention and are not intended to limit the embodiments of the present invention, and other variations or modifications in the description may be made by those skilled in the art without necessarily and without intending to be exhaustive of all embodiments, any modifications, equivalents, improvements, etc. that fall within the spirit and principles of the present invention are intended to be included within the scope of the claims.
Claims (4)
1. The hydraulic and pneumatic auxiliary device for the flexible thin-wall bearing life testing machine comprises an electric main shaft (23), a loading device (24), a hydraulic auxiliary device and a pneumatic auxiliary device, and is characterized in that the electric main shaft (23) and the loading device (24) are connected with the hydraulic auxiliary device through an oil pipe (9), the electric main shaft (23) and the pneumatic auxiliary device are connected together through an air pipe (17), the hydraulic auxiliary device is used for realizing cooling operation of the electric main shaft (23) and lubricating operation of the loading device (24), and the pneumatic auxiliary device is used for realizing clamping and loosening operation of the electric main shaft (23) and the loading device (24) and oil return operation after lubrication of the loading device (24); the hydraulic auxiliary device comprises an oil tank (1), a main driving pump (2), an overflow valve (3), a pressure gauge (4), a cooling electromagnetic directional valve (5), a lubricating electromagnetic directional valve (6), a cooling relief valve (7), a lubricating relief valve (8), an oil pipe (9), a lubricating oil inlet nozzle (10), a lubricating oil outlet nozzle (11), an oil return one-way valve (12), a filter (13), a cooling oil nozzle (21) and a clamping and loosening air nozzle (22), wherein the main driving pump (2), the overflow valve (3), the pressure gauge (4), the cooling electromagnetic directional valve (5), the lubricating electromagnetic directional valve (6), the cooling relief valve (7), the lubricating relief valve (8) and the oil return one-way valve (12) are fixed on the oil tank (1) through bolts, the overflow valve (3) is connected with an oil outlet of the main driving pump (2) and is connected with the pressure gauge (4) on the oil pipe, the main driving pump (2) is connected with an oil inlet P of the cooling electromagnetic directional valve (5) and an oil inlet P of the lubricating electromagnetic directional valve (6), the cooling electromagnetic directional valve (5) is connected with an oil return oil inlet of the lubricating electromagnetic directional valve (6) through an oil inlet of the oil tank (1), an oil outlet A of the cooling electromagnetic directional valve (5) is connected with the cooling pressure reducing valve (7), the other end of the cooling pressure reducing valve (7) is connected with a cooling oil nozzle (21) arranged on the electric spindle (23) through an oil pipe (9), an oil return port B of the cooling electromagnetic directional valve (5) is connected with the cooling oil nozzle (21) through the oil pipe (9), an oil outlet A end of the lubricating electromagnetic directional valve (6) is connected with the lubricating pressure reducing valve (8), the other end of the lubricating pressure reducing valve (8) is connected with a lubricating oil inlet nozzle (10) arranged on a loading device (24) through the oil pipe (9), a lubricating oil outlet nozzle (11) arranged on the loading device (24) is connected with an oil return one-way valve (12), the other end of the oil return one-way valve (12) is connected with a filter (13), and the other end of the filter (13) is connected with the oil return port B of the lubricating electromagnetic directional valve (6). The air pressure auxiliary device comprises an air pump (14), an air-water separator (15), a clamping and loosening reversing valve (16), an oil return reversing valve (18), an air pipe (17) and a clamping and loosening air tap (22), wherein an air outlet of the air pump (14) is connected with the air-water separator (15), an outlet end of the air-water separator (15) is connected with an air inlet P of the clamping and loosening reversing valve (16), an outlet end of the air-water separator (15) is connected with an air inlet P of the oil return reversing valve (18), an air outlet A and an air return opening B of the clamping and loosening reversing valve (16) are respectively connected with the clamping and loosening air tap (22) arranged on an electric spindle (23), and an air outlet A of the oil return reversing valve (18) is connected with an oil return opening B of the lubricating electromagnetic reversing valve (6).
2. The hydraulic and pneumatic assist device for a flexible thin-walled bearing life tester of claim 1, wherein: the hydraulic oil cooling device is characterized by further comprising a heat radiating device, wherein the heat radiating device is arranged at the top of the oil tank (1) of the hydraulic auxiliary device and used for cooling hydraulic oil in the oil tank (1).
3. The hydraulic and pneumatic assist device for a flexible thin-walled bearing life tester of claim 2, wherein: the heat dissipation device comprises a heat dissipation oil pump (19) and a radiator (20), wherein the heat dissipation oil pump (19) and the radiator (20) are arranged on the oil tank (1), an oil inlet of the heat dissipation oil pump (19) is connected with the oil tank (1), an oil inlet of the radiator (20) is connected with an oil outlet of the heat dissipation oil pump (19), and an oil outlet of the radiator (20) is directly connected with the oil tank (1).
4. The hydraulic and pneumatic assist device for a flexible thin-walled bearing life tester of claim 3, wherein: the radiator (20) is an air-cooled radiator.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611221816.2A CN106769044B (en) | 2016-12-27 | 2016-12-27 | Hydraulic and pneumatic auxiliary device for flexible thin-wall bearing life testing machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611221816.2A CN106769044B (en) | 2016-12-27 | 2016-12-27 | Hydraulic and pneumatic auxiliary device for flexible thin-wall bearing life testing machine |
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| CN106769044A CN106769044A (en) | 2017-05-31 |
| CN106769044B true CN106769044B (en) | 2023-04-28 |
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| CN201611221816.2A Active CN106769044B (en) | 2016-12-27 | 2016-12-27 | Hydraulic and pneumatic auxiliary device for flexible thin-wall bearing life testing machine |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108318250B (en) * | 2018-05-03 | 2023-10-31 | 河南科技大学 | Comprehensive testing machine |
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| CN105697353A (en) * | 2016-01-21 | 2016-06-22 | 燕山大学 | Comprehensive testing device for fault simulation and state detection for hydraulic pump under variable working condition |
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2016
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|---|---|---|---|---|
| CN202811661U (en) * | 2012-08-10 | 2013-03-20 | 河南科技大学 | Double-pump double-oil-way hydraulic pressure station for ball-disc friction machine |
| CN203442455U (en) * | 2013-06-27 | 2014-02-19 | 西安交通大学苏州研究院 | Intelligent hydraulic station |
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