CN112798184A - Oil seal testing device with high simulation dynamic simulation effect - Google Patents
Oil seal testing device with high simulation dynamic simulation effect Download PDFInfo
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- G01M3/00—Investigating fluid-tightness of structures
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- G—PHYSICS
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- 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
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- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
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Abstract
The invention relates to an oil seal testing mechanism, in particular to an oil seal testing device with a high simulation dynamic simulation effect, which comprises a simulation testing platform and a control cabinet for controlling the simulation testing platform, wherein the simulation testing platform comprises a base, the left side and the right side of the upper end surface of the base are respectively provided with a rotating simulation mechanism and a fixed simulation mechanism, the fixed simulation mechanism is fixedly arranged at the front end of a horizontal transmission component, the rotating simulation mechanism and the fixed simulation mechanism are positioned on the same horizontal plane and are opposite in position, and the front ends of the rotating simulation mechanism and the fixed simulation mechanism are respectively provided with a replaceable floating oil seal assembly. Compared with the prior art, the testing device has the advantages that the testing method is simple and convenient, the testing data in the testing process can be intuitively mastered in real time, and the effect of high simulation dynamic simulation can be achieved.
Description
Technical Field
The invention relates to an oil seal testing mechanism, in particular to an oil seal testing device with a high simulation dynamic simulation effect.
Background
The floating oil seal is a special type mechanical seal, is a compact mechanical seal mode developed for adapting to severe working environment, has the advantages of strong pollution resistance, wear resistance, impact resistance, reliable work, automatic compensation of end surface abrasion, simple structure and the like, is most commonly applied to engineering mechanical products, and is also widely applied to various conveyors, sand treatment equipment and concrete equipment. The chain wheel is mainly used for chain wheels and speed reducers of scraper conveyors, and transmission mechanisms, rocker arms, rollers and the like of coal mining machines on coal mining machines. The sealing product is more universal and mature in application of engineering machinery equipment, but in other industries, due to the fact that the using amount is small, basic theoretical data and using experience are lacked, the failure phenomenon is common in the using process, and the expected effect is difficult to achieve.
The dynamic sealing performance test and the reliability service life test are required before the floating oil seal leaves a factory, the pressure of a testing mechanism of a testing machine used in the national standard is loaded through a weight, the rotating speed is tested through the outside, and the oil temperature of a floating seal chamber is manually measured. Therefore, the testing process in the existing testing method is complex, the testing parameters cannot be changed in real time in the testing process, and meanwhile, the specific parameters of the test cannot be accurately mastered, so that the aim of simulation cannot be fulfilled.
Disclosure of Invention
The invention provides an oil seal testing device with a high simulation dynamic simulation effect, aiming at overcoming the defects that the oil seal testing mechanism in the prior art is complex in testing process, cannot change testing parameters in real time and does not have the purpose of dynamic simulation.
In order to achieve the purpose, the invention is realized by the following technical scheme:
an oil seal testing device with high simulation dynamic simulation effect comprises a simulation test bench and a control cabinet for controlling the simulation test bench, wherein the simulation test bench comprises a base, the left side and the right side of the upper end surface of the base are respectively provided with a rotating simulation mechanism and a fixed simulation mechanism, the fixed simulation mechanism is fixedly arranged at the front end of a horizontal transmission component, the rotating simulation mechanism and the fixed simulation mechanism are positioned on the same horizontal plane and are opposite in position, the front ends of the rotating simulation mechanism are respectively provided with a replaceable floating oil seal assembly, the rotating simulation mechanism comprises a first fixed mounting platform arranged on the base, a rotating bearing is fixedly arranged on the first fixed mounting platform, a rotating shaft is sleeved in the rotating bearing, the two ends of the rotating shaft, which are positioned on the rotating bearing, are respectively provided with a first synchronizing wheel and a floating seal chamber fixing seat, the base lower extreme is the fixed inverter motor that is provided with still, and inverter motor's output fixed connection is provided with a second synchronizing wheel, through synchronizing wheel belt interconnect between first synchronizing wheel and the second synchronizing wheel, fixed analog mechanism is including setting up the static end fixing base on horizontal drive subassembly, and static end fixing base front end is provided with one and floats seal chamber fixing base, static end fixing base rear fixed connection is provided with a pressure sensor, pressure sensor's the other end and horizontal drive subassembly fixed connection.
Preferably, the rotating simulation mechanism is positioned on the outer side of a synchronous pulley belt and is further provided with a belt pulley cover, and the fixed simulation mechanism is positioned on the outer side of the horizontal transmission assembly and is further provided with a transmission end cover.
Preferably, the horizontal transmission assembly comprises a second fixed mounting platform, a sliding platform and a thrust assembly, wherein the second fixed mounting platform is arranged on the base, the thrust assembly is used for pushing the sliding platform, an axis supporting seat is arranged at the left end and the right end of the second fixed mounting platform, a mandrel is connected and arranged between the axis supporting seats, a linear bearing is fixedly arranged at the lower end of the sliding platform, and the linear bearing is sleeved on the outer side of the mandrel, so that the sliding platform can slide left and right along the linear bearing under the pushing of the thrust assembly.
Preferably, the thrust assembly comprises a motor, a speed reducer is connected to the front end of the motor, the front end of the speed reducer is connected with a lead screw through a coupler, a lead screw rotating seat matched with the lead screw is arranged on the sliding platform, and a lead screw fixing seat used for fixing is further arranged at the end part, located on the lead screw, of the second fixed mounting platform.
Preferably, the second fixed mounting platform side is also provided with two left and right limit switches, and the sliding platform side is fixedly connected with a left and right limit switch plate which is used for being matched with the left and right limit switches.
Preferably, a left limit switch cover and a right limit switch cover are further arranged on the outer sides of the left limit switch and the right limit switch.
Preferably, the oil seal testing device is used as follows:
(S.1) selecting a corresponding floating seal chamber according to the product model, installing the floating seal chamber to a floating seal chamber fixing seat on a rotating simulation mechanism and a fixed simulation mechanism, adjusting the axial and transverse jumping of the floating seal chamber, and then wiping the floating seal chamber clean;
(S.2) wiping the O-shaped ring and the floating oil seal for testing, then sleeving the O-shaped ring on the floating oil seal, then installing a floating oil seal assembly consisting of the O-shaped ring and the floating oil seal into a floating seal chamber by using an installation tool for fine adjustment, and wiping a bright band part to smear engine oil;
(S.3) loading by using a horizontal transmission assembly of the simulation test bench to ensure that the pressure between the sealing surfaces of the two floating oil seals and the clearance of the oil seal chamber are in a reasonable range;
(S.4) injecting proper engine oil into the floating oil seal through the oil injection hole, loading a temperature sensor probe on the floating oil seal at the fixed simulation mechanism, closing the oil injection hole, and wiping the contact surface of the floating oil seal completely;
and (S.5) programming on an operation panel of the electrical control cabinet, starting an automatic operation mode after inputting the diameter, the rotating speed, the operation time, the repetition times and the observation forbidden time of the oil seal, exporting time, temperature, pressure curves and data after the operation is finished, analyzing, finally replacing the floating oil seal, and repeating the test.
Preferably, the axial and lateral run-out in step (s.1) is measured by a dial gauge and calibrated to run-out within 0.1 mm.
Preferably, in the step (s.3), the pressure of the sealing surface is 390 to 690KPa, and the oil seal chamber gap is 3 mm.
Preferably, in the step (S.5), when the diameter of the floating oil seal (37) is tested within 200mm, the rotating speed of the sample is 260-300 r/min, and when the diameter of the sample is tested within 200-550 mm, the rotating speed is 60-100 r/min, and the test is repeated for not less than 20 times.
The invention has the following beneficial effects:
the oil seal testing device with high simulation dynamic simulation effect comprises a simulation console, wherein the simulation console is composed of a rotation simulation mechanism and a fixed simulation mechanism, when in testing, only floating oil seals are needed to be respectively installed on the rotation simulation mechanism and the fixed simulation mechanism, and the rotation simulation mechanism and the fixed simulation mechanism are folded to test, wherein the rotation simulation mechanism can control the rotation of the rotation simulation mechanism through a variable frequency motor, a first synchronous wheel, a second synchronous wheel and a synchronous wheel belt, so that the floating oil seals at the positions are driven to rotate, and dynamic sealing test is formed between the floating oil seals in the fixed simulation mechanism. And fixed simulation structure department then can effectively change the pressure between two floating oil seals through a horizontal transmission subassembly to conveniently modify the experiment parameter, the while test pressure can be obtained through pressure sensor direct measurement, thereby can be in real time with my pressure variation in the testing process.
The simulation test bench is controlled by the control cabinet, and the motion modes of the rotary simulation mechanism and the fixed simulation mechanism can be controlled by setting test parameters, so that the effect of high-simulation dynamic simulation can be achieved. Compared with the existing testing technology, the testing device provided by the invention has the advantages that the testing method is simple and convenient, the testing data in the testing process can be intuitively mastered in real time, and the effect of high-simulation dynamic simulation can be achieved.
Drawings
FIG. 1 is a schematic diagram of a structure of the present invention.
FIG. 2 is a schematic view of the present invention with the pulley cover and drive end cover removed.
Fig. 3 is a schematic structural diagram of the rotation simulation mechanism of the present invention.
Fig. 4 is a schematic structural diagram of the fixed simulation mechanism of the present invention.
Fig. 5 is a schematic structural view of the floating oil seal assembly of the present invention.
Wherein: the device comprises a simulation test bench 1, a control cabinet 2, a base 3, a rotation simulation mechanism 4, a fixed simulation mechanism 5, a horizontal transmission assembly 6, a floating oil seal assembly 7, a first fixed mounting bench 8, a rotating bearing 9, a rotating shaft 10, a first synchronizing wheel 11, a floating seal chamber fixing seat 12, a variable frequency motor 13, a second synchronizing wheel 14, a synchronizing wheel belt 15, a static end fixing seat 16, a pressure sensor 17, a belt wheel cover 18, a transmission end cover 19, a second fixed mounting bench 20, a sliding platform 21, an axis supporting seat 22, a mandrel 23, a linear bearing 24, a thrust assembly 25, a motor 26, a speed reducer 27, a coupler 28, a screw rod 29, a screw rod rotating seat 30, a screw rod fixing seat 31, a left limit switch 32, a right limit switch plate 33, a left limit switch cover 34, a right limit switch cover 34, a floating seal chamber 35, an O-shaped ring 36 and.
Detailed Description
The invention is further described with reference to the drawings and the specific embodiments. Those skilled in the art will be able to implement the invention based on these teachings. Moreover, the embodiments of the present invention described in the following description are generally only some embodiments of the present invention, and not all embodiments. Therefore, all other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without any creative effort shall fall within the protection scope of the present invention.
Examples
As shown in fig. 1 to 5, an oil seal testing device with high simulation dynamic simulation effect includes a simulation testing platform 1 and a control cabinet 2 for controlling the simulation testing platform 1.
The simulation test platform 1 comprises a base 3, the left side and the right side of the upper end face of the base 3 are respectively provided with a rotating simulation mechanism 4 and a fixed simulation mechanism 5, the rotating simulation mechanism 4 and the fixed simulation mechanism 5 are located on the same horizontal plane and are opposite in position, and the front end of the rotating simulation mechanism and the front end of the fixed simulation mechanism are respectively provided with a replaceable floating oil seal assembly 7.
Wherein: the rotation simulation mechanism 4 comprises a first fixed mounting platform 8 arranged on the base 3, a rotating bearing 9 is fixedly arranged on the first fixed mounting platform 8, a rotating shaft 10 is sleeved in the rotating bearing 9, two ends of the rotating shaft 10, which are located on the rotating bearing 9, are respectively provided with a first synchronizing wheel 11 and a floating seal chamber fixing seat 12, the lower end of the base 3 is further fixedly provided with a variable frequency motor 13, the output end of the variable frequency motor 13 is fixedly connected with a second synchronizing wheel 14, the first synchronizing wheel 11 and the second synchronizing wheel 14 are mutually connected through a synchronizing wheel belt 15, the rotation simulation mechanism 4 is located on the outer side of the synchronizing wheel belt 15 and is further provided with a belt wheel cover 18, and the outer side of the transmission assembly 6 is further provided with a transmission end cover 19.
When inverter motor 13 starts, second synchronizing wheel 14 begins to rotate, drives synchronizing wheel belt 15 and with power transmission to first synchronizing wheel 11 and then make axis of rotation 10 rotate thereby to realize the synchronous rotation of floating seal room fixing base 12 to the floating seal room 35 of being connected with floating seal room fixing base 12 can realize rotating, because what adopt in this embodiment is inverter motor 13, therefore it can realize infinitely variable speed, thereby can change the test rotational speed often.
The fixed simulation mechanism 5 is fixedly arranged at the front end of a horizontal transmission assembly 6 and comprises a static end fixing seat 16 arranged on the horizontal transmission assembly 6, a floating seal chamber fixing seat 12 is arranged at the front end of the static end fixing seat 16, a pressure sensor 17 is fixedly connected behind the static end fixing seat 16, and the other end of the pressure sensor 17 is fixedly connected with the horizontal transmission assembly 6.
Horizontal transmission subassembly 6 includes that one sets up second fixed mounting platform 20, sliding platform 21 on base 3 and is used for promoting sliding platform 21's thrust subassembly 25, and both ends are provided with an axle center supporting seat 22 about second fixed mounting platform 20, connect between axle center supporting seat 22 and be provided with a mandrel 23, sliding platform 21 lower extreme is fixed and is provided with a linear bearing 24, and linear bearing 24 cover is established in the mandrel 23 outside for sliding platform 21 can slide along linear bearing 24 from side to side under thrust subassembly 25's promotion.
The thrust assembly 25 comprises a motor 26, the front end of the motor 26 is connected with a speed reducer 27, the front end of the speed reducer 27 is connected with a screw rod 29 through a coupler 28, a screw rod rotating seat 30 matched with the screw rod 29 is arranged on the sliding platform 21, and a screw rod fixing seat 31 for fixing is further arranged at the end part, located on the screw rod 29, of the second fixed mounting platform 20.
The front end of the screw rod rotating seat 30 is fixedly connected with the pressure sensor 17, after the thrust assembly 25 in the horizontal transmission assembly 6 is loaded and started, the sliding platform 21 moves towards the direction of the rotation simulation mechanism 4, the two floating oil seal assemblies 7 are matched, the pressure of the floating seal chamber 35 can be controlled through the advancing distance of the sliding platform 21, the pressure data in the test process can be transmitted in real time, and the timeliness is further improved.
The second fixed mounting platform 20 side still is provided with two and controls limit switch 32, sliding platform 21 side fixed connection is provided with one and is used for controlling limit switch board 33 about with limit switch 32 looks adaptation, and controls limit switch 32 outside still and be provided with one and control limit switch cover 34. The arrangement of the left and right limit switches 32 and the left and right limit switch plates 33 can effectively prevent the overload problem of the sliding platform 21 in the front and rear movement processes.
Application example
The use method of the oil seal testing device taking the floating oil seal phi 328 as an example is as follows:
s.1: the corresponding floating seal chamber 35 is selected according to the product model, the floating seal chamber 35 is installed on the floating seal chamber fixing seat 16 on the rotating simulation mechanism 4 and the fixed simulation mechanism 5, the axial and transverse runout of the floating seal chamber are measured by a dial indicator, the runout is adjusted to be within 0.1mm, and the floating seal chamber is wiped clean by dust-free cloth.
S.2: the O-shaped ring 36 with the diameter of 298 phi 12.2 and the floating oil seal 37 with the diameter of 328 which are used for testing are respectively wiped clean by dust-free cloth, then the O-shaped ring 36 is sleeved on the floating oil seal 37, then the floating oil seal assembly 7 consisting of the O-shaped ring 36 and the floating oil seal 37 is installed into the floating seal chamber 35 by using an installation tool for fine adjustment, and bright belt parts are wiped to be coated with engine oil.
S.3: the horizontal transmission assembly 6 of the simulation test bench 1 is used for loading, so that the pressure between the sealing surfaces of the two floating oil seals 37 is ensured to be 90-690 KPa, or the clearance of an oil seal chamber is 3 mm.
S.4: appropriate engine oil is injected into the floating oil seal 37 through the oil injection hole, and then a temperature sensor probe is loaded on the floating oil seal 37 at the fixed simulation mechanism 5, the oil injection hole is closed, and the contact surface of the floating oil seal is wiped clean.
S.5: programming on an operation panel of the electrical control cabinet 2, inputting the diameter, the rotating speed, the running time, the repetition times and the observation forbidden time of the oil seal, starting an automatic running mode, exporting time, temperature and pressure curves and data after running is finished, analyzing, and finally replacing the floating oil seal 37, wherein the repetition testing times is not less than 20 times;
wherein when the diameter of the tested floating oil seal 37 is within 200mm, the rotating speed of the sample is 260-300 r/min, and when the diameter of the sample is 200-550 mm, the rotating speed is 60-100 r/min.
Claims (10)
1. The oil seal testing device with the high simulation dynamic simulation effect comprises a simulation test bench (1) and a control cabinet (2) used for controlling the simulation test bench (1), wherein the simulation test bench (1) comprises a base (3), the left side and the right side of the upper end face of the base (3) are respectively provided with a rotating simulation mechanism (4) and a fixed simulation mechanism (5), the fixed simulation mechanism (5) is fixedly arranged at the front end of a horizontal transmission assembly (6), the rotating simulation mechanism (4) and the fixed simulation mechanism (5) are positioned on the same horizontal plane and are opposite in position, the front ends of the rotating simulation mechanism (4) are respectively provided with a replaceable floating oil seal assembly (7), the oil seal testing device is characterized in that the rotating simulation mechanism (4) comprises a first fixed mounting platform (8) arranged on the base (3), and a rotating bearing (9) is fixedly arranged on the first fixed mounting platform (8), a rotating shaft (10) is sleeved in the rotating bearing (9), a first synchronizing wheel (11) and a floating seal chamber fixing seat (12) are respectively arranged at two ends of the rotating shaft (10) which are positioned on the rotating bearing (9), a variable frequency motor (13) is fixedly arranged at the lower end of the base (3), a second synchronizing wheel (14) is fixedly connected with the output end of the variable frequency motor (13), the first synchronizing wheel (11) and the second synchronizing wheel (14) are connected with each other through a synchronizing wheel belt (15), the fixed simulation mechanism (5) comprises a static end fixing seat (16) arranged on the horizontal transmission component (6), the front end of the static end fixing seat (16) is provided with a floating seal chamber fixing seat (12), a pressure sensor (17) is fixedly connected and arranged at the rear part of the static end fixing seat (16), the other end of the pressure sensor (17) is fixedly connected with the horizontal transmission component (6).
2. The oil seal testing device with high simulation dynamic simulation effect according to claim 1, wherein the rotation simulation mechanism (4) is further provided with a pulley cover (18) on the outer side of the synchronous pulley belt (15), and the fixed simulation mechanism (5) is further provided with a transmission end cover (19) on the outer side of the horizontal transmission assembly (6).
3. The oil seal testing device with the high simulation dynamic simulation effect according to claim 2, wherein the horizontal transmission assembly (6) comprises a second fixed mounting platform (20) arranged on the base (3), a sliding platform (21) and a thrust assembly (25) for pushing the sliding platform (21), an axis supporting seat (22) is arranged at each of the left end and the right end of the second fixed mounting platform (20), a spindle (23) is connected between the axis supporting seats (22), a linear bearing (24) is fixedly arranged at the lower end of the sliding platform (21), and the linear bearing (24) is sleeved on the outer side of the spindle (23), so that the sliding platform (21) can slide left and right along the linear bearing (24) under the pushing of the thrust assembly (25).
4. The oil seal testing device with the high simulation dynamic simulation effect according to claim 3, wherein the thrust assembly (25) comprises a motor (26), a speed reducer (27) is connected to the front end of the motor (26), the front end of the speed reducer (27) is connected to a screw rod (29) through a coupling (28), a screw rod rotating seat (30) matched with the screw rod (29) is arranged on the sliding platform (21), and a screw rod fixing seat (31) for fixing is further arranged at the end, located on the screw rod (29), of the second fixing mounting platform (20).
5. The oil seal testing device with the high simulation dynamic simulation effect according to claim 4, wherein the second fixed mounting platform (20) is further provided with two left and right limit switches (32) at the side, and the sliding platform (21) is fixedly connected with a left and right limit switch plate (33) at the side for matching with the left and right limit switches (32).
6. The oil seal testing device with high simulation dynamic simulation effect according to claim 5, characterized in that a left limit switch cover (34) and a right limit switch cover (34) are further arranged outside the left limit switch and the right limit switch (32).
7. An oil seal testing device with high simulation dynamic simulation effect according to any one of claims 1 to 5, characterized in that the use method of the oil seal testing device is as follows:
(S.1) selecting a corresponding floating seal chamber (35) according to the product model, installing the floating seal chamber (35) to a floating seal chamber fixing seat (16) on a rotating simulation mechanism (4) and a fixed simulation mechanism (5), adjusting the axial and transverse runout of the floating seal chamber, and wiping the floating seal chamber (35) clean;
(S.2) wiping the O-shaped ring (36) and the floating oil seal (37) for testing completely, then sleeving the O-shaped ring (36) on the floating oil seal (37), then installing a floating oil seal assembly (7) consisting of the O-shaped ring (36) and the floating oil seal (37) into a floating seal chamber (35) by using an installation tool for fine adjustment, and wiping a bright band part to smear engine oil;
(S.3) loading by using a horizontal transmission assembly (6) of the simulation test bench (1) to ensure that the pressure between the sealing surfaces of the two floating oil seals (37) and the clearance of an oil seal chamber are in a reasonable range;
(S.4) injecting proper engine oil into the floating oil seal (37) through the oil filling hole, then loading a temperature sensor probe on the floating oil seal (37) at the fixed simulation mechanism (5), closing the oil filling hole, and wiping the contact surface of the floating oil seal completely;
(S.5) programming is carried out on an operation panel of the electric control cabinet (2), an automatic operation mode is started after the diameter, the rotating speed, the operation time and the repetition times of the oil seal are input and observation time is forbidden, time, temperature, pressure curves and data are derived after the operation is finished, analysis is carried out, and finally the floating oil seal (37) is replaced, and the test is repeated.
8. An oil seal testing device with high simulation dynamic simulation effect according to claim 7, characterized in that the axial and lateral runout in the step (S.1) is measured by a dial indicator and calibrated to the runout within 0.1 mm.
9. An oil seal testing device with high simulation dynamic simulation effect according to claim 7, wherein the pressure of the sealing surface in the step (S.3) is 390-690 KPa, and the oil seal chamber gap is 3 mm.
10. The oil seal testing device with high simulation dynamic simulation effect according to claim 7, characterized in that in the step (S.5), when the diameter of the floating oil seal (37) is tested within 200mm, the rotating speed of the sample is 260-300 r/min, and the rotating speed of the sample with the diameter of 200-550 mm is 60-100 r/min, and the number of times of repeated tests is not less than 20 times.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113984374A (en) * | 2021-10-12 | 2022-01-28 | 雄县津海工矿机械配件有限公司 | Floating oil seal testing device |
| CN116222887A (en) * | 2022-12-30 | 2023-06-06 | 天地上海采掘装备科技有限公司 | Multi-bit state testing device and testing method for floating oil seal |
| CN117450255A (en) * | 2023-12-26 | 2024-01-26 | 沈阳仪表科学研究院有限公司 | Testing device and testing method for double-sided horizontal pressurized sealing |
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| CN206787808U (en) * | 2017-05-12 | 2017-12-22 | 渠润生 | Float grease seal test device |
| CN111307639A (en) * | 2020-03-20 | 2020-06-19 | 济南恒瑞金试验机有限公司 | Floating oil seal running-in abrasion leakage performance testing machine |
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Application publication date: 20210514 |