CN109612656B - Sealing test device and sealing test system for turntable bearing - Google Patents
Sealing test device and sealing test system for turntable bearing Download PDFInfo
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- CN109612656B CN109612656B CN201811649519.7A CN201811649519A CN109612656B CN 109612656 B CN109612656 B CN 109612656B CN 201811649519 A CN201811649519 A CN 201811649519A CN 109612656 B CN109612656 B CN 109612656B
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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
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
Abstract
The invention provides a sealing test device and a sealing test system for a turntable bearing, wherein the sealing test device comprises an outer ring sealing cover and an inner ring sealing cover, the outer ring sealing cover is used for being in sealing connection with the end face of one side of an outer ring of the bearing, which is opposite to a sealing ring, the inner ring sealing cover is used for being in sealing connection with the end face of an inner ring of the bearing, the outer ring sealing cover and the inner ring sealing cover enclose a sealing inner cavity with the bearing after being connected with the bearing, one of the outer ring sealing cover and the inner ring sealing cover is provided with an inflation connector used for being connected with a high-pressure air source and used for filling compressed air into the sealing inner cavity, one of the outer ring sealing cover and the inner ring sealing cover is also provided with a pressure detection device used for being communicated with the sealing inner cavity. Need not to carry out the installation test to the slewing bearing, avoid appearing leading to the problem that sealed efficiency of software testing is low because of the dismouting machine.
Description
Technical Field
The invention relates to a sealing test device and a sealing test system for a turntable bearing.
Background
The turntable bearing has good axial bearing performance and is widely applied to large-scale rotating devices such as hoisting and transporting machines, mining machines, wind power generation, radars and the like. The specific structure of a slewing bearing in the prior art is shown in fig. 1, and includes an outer ring 1, an inner ring 4, and rolling elements 3 and spacers 6 that are arranged between raceways of the outer ring 1 and the inner ring 4 and alternately arranged, an outer ring positioning threaded hole 2 for fixing the outer ring 1 on a slewing device is provided on the outer ring 1, and an inner ring positioning threaded hole 5 for fixing the inner ring 4 on the slewing device is provided on the inner ring 4. In order to install the rolling elements 3 and the isolating blocks 6 between the raceways of the outer ring 1 and the inner ring 4, ball installing holes (or the ball installing holes can be arranged on the inner ring) are formed in the outer ring 1, plugs 7 are arranged in the ball installing holes and used for plugging the ball installing holes after the rolling elements 3 and the isolating blocks 6 are installed, corresponding pin holes are formed in the plugs 7 and the outer ring 1, and the plugs 7 are fixed on the outer ring 1 by inserting the conical pins 8 into the pin holes. In addition, a sealing ring 9 is further arranged between the outer ring 1 and the inner ring 4 at one axial end of the turntable bearing, so that one end of a gap between the inner ring and the outer ring is blocked, and lubricating grease in the bearing is prevented from being leaked in the operation process.
In order to ensure that the rolling body smoothly slides between the raceways of the outer ring and the inner ring, one end of the plug, which is close to the raceway, needs to be provided with a channel with the radian consistent with that of the raceway, so that the plug is often plugged into the ball mounting hole and is simultaneously processed with the outer ring (or the inner ring) in the actual production process, after the processing is finished, the taper pin is removed, the plug is pulled out, and then the steel ball and the isolating block are mounted. Because the plug needs to be disassembled in the processes of machining and assembling the turntable bearing, the matching relation between the plug and the ball mounting hole is small clearance fit.
However, in some use cases, pressure is required to be applied to the inside of the bearing, for example, when the turntable bearing is used on a robot base, the turntable bearing is required to have good sealing performance under the pressure (the sealing performance of the bearing is mainly determined by the tightness of the sealing fit between the sealing ring and the inner ring and the outer ring and the sealing fit between the plug and the ball installing hole), so as to prevent high-pressure gas and lubricating grease in the bearing from leaking in the bearing operation process, which results in poor lubrication and abnormal operation of the bearing. Therefore, before the turntable bearing is used, a pressure-bearing sealing test needs to be carried out on the turntable bearing, in the prior art, an installation pressurization test method is commonly adopted, the turntable bearing is installed in a rotating device which needs to use the turntable bearing to be detected, if the sealing ring falls off or the internal pressure of the bearing is insufficient, the sealing performance of the turntable bearing is poor, the turntable bearing needs to be disassembled and replaced, the operation is inconvenient, and the efficiency is low.
Disclosure of Invention
The invention aims to provide a turntable bearing sealing test system, which aims to solve the technical problem that the efficiency of an installation test is low when the sealing performance of a turntable bearing is tested in the prior art; the invention also aims to provide a turntable bearing sealing test device.
In order to achieve the purpose, the sealing test device for the turntable bearing adopts the following technical scheme:
the sealing test device for the turntable bearing comprises an outer ring sealing cover and an inner ring sealing cover, wherein the outer ring sealing cover is used for being in sealing connection with one side end face of a bearing outer ring, which is opposite to a sealing ring, the outer ring sealing cover and the inner ring sealing cover are connected with the bearing and enclose a sealing inner cavity with the bearing, one of the outer ring sealing cover and the inner ring sealing cover is provided with an inflation connector which is used for being connected with a high-pressure air source and used for filling compressed air into the sealing inner cavity, one of the outer ring sealing cover and the inner ring sealing cover is also provided with a pressure detection device which is used for being communicated with the sealing inner cavity, and the pressure detection device is used for judging the sealing performance of the bearing by detecting whether the pressure in the sealing inner.
The invention has the beneficial effects that: compared with the loading pressurization test method in the prior art, the invention is specially provided with the sealing test device, when in use, the outer ring sealing cover of the sealing test device is hermetically connected with the end surface of one side of the bearing outer ring, which is opposite to the sealing ring, and the inner ring sealing cover is hermetically connected with the bearing inner ring, so that the outer ring sealing cover, the bearing outer ring, the sealing ring, the bearing inner ring and the inner ring end cover jointly enclose a sealed inner cavity, the sealed inner cavity comprises a space between the bearing inner ring and the bearing outer ring, when in test, compressed gas is injected into the sealed inner cavity through the inflation connector connected with a high-pressure gas source, the pressure difference is formed between the inside and the outside of the sealed inner cavity, and the sealing performance of the bearing can be conveniently judged according to the. Because only need in the test process with outer lane closing cap and inner circle closing cap and bearing's outer lane and inner circle correspond the installation and dismantle can, need not carry out dismouting machine operation to the bearing, just also need not to consider the position cooperation relation between bearing and the actual installation cooperation structure and the problem of installation accuracy, the dismouting work of simplifying among the test process improves efficiency of software testing.
Further, the inner ring sealing cover is connected to the end face of the inner ring close to one side of the sealing ring in a sealing mode.
Has the advantages that: the inner ring sealing cover is connected to the end face of one side, close to the sealing ring, of the inner ring in a sealing mode, the inner ring sealing cover and the outer ring sealing cover are oppositely arranged at two ends of the bearing along the axial direction of the bearing, the distance between the inner ring sealing cover and the outer ring sealing cover is maximized, the space for the inflation connector and the pressure detection device to overhang into the cavity is indirectly enlarged, and the fact that the overhanging part of the inflation connector and the pressure detection device in the sealing cavity cannot interfere with the opposite end covers is guaranteed. Meanwhile, the outer ring sealing cover and the inner ring sealing cover are relatively independently installed on the bearing, the installation process is not sequential, and the convenience of the installation operation of the outer ring sealing cover and the inner ring sealing cover on the bearing is improved. In addition, when the ball loading hole of the turntable bearing to be tested is formed in the outer ring, the turntable bearing sealing test device with the structure can detect the sealing matching degree between the plug and the ball loading hole and can also detect whether the sealing ring falls off or not; when the ball loading hole of the turntable bearing to be detected is formed in the inner ring and the sealing matching degree between the plug and the ball loading hole does not need to be detected, the device can effectively detect whether the sealing ring falls off or not.
Further, the inner ring sealing cover is connected to the end face of the inner ring, far away from the sealing ring in a sealing mode.
Has the advantages that: the inner ring sealing cover is connected to the end face of one side, far away from the sealing ring, of the inner ring, the inner ring sealing cover and the outer ring sealing cover are arranged at the same axial end of the bearing, the distance between the inner ring sealing cover and the outer ring sealing cover is reduced, the volume of the sealing inner cavity is reduced, the inflation quantity of compressed gas rushing into the sealing inner cavity is reduced, the inflation time is shortened, and the detection efficiency is improved. Meanwhile, the volume of the sealed inner cavity is small, and when the bearing sealing structure leaks air, the reading variation of the pressure detection device is larger, so that the accuracy of a detection result can be improved. In addition, no matter the ball loading hole of the turntable bearing to be tested is arranged on the outer ring or the inner ring, the turntable bearing sealing test device with the structure can detect the sealing matching degree between the plug of the bearing and the ball loading hole and can detect whether the sealing ring falls off or not.
Furthermore, the outer ring sealing cover is provided with an outer ring connecting hole which is matched and corresponding to an outer ring positioning threaded hole in the bearing outer ring, fasteners are arranged in the outer ring connecting hole and the outer ring positioning threaded hole in a penetrating mode to realize connection of the outer ring sealing cover and the outer ring, and a sealing ring is arranged between the outer ring sealing cover and the end face of the outer ring.
Has the advantages that: the outer ring sealing cover is provided with the outer ring connecting hole which is matched and corresponds to the outer ring positioning threaded hole in the bearing outer ring, the structure of the bearing outer ring is utilized, a connecting structure is not required to be additionally arranged on the bearing outer ring for installing the outer ring sealing cover, and the structure of the turntable bearing sealing testing device is simplified. Meanwhile, due to the arrangement of the sealing ring between the outer ring sealing cover and the outer ring end face, the outer ring sealing cover and the outer ring end face are reliably sealed, and the problem that the reliability of a test result is influenced due to poor sealing between the outer ring sealing cover and the outer ring end face is avoided.
Furthermore, the inner ring sealing cover is provided with an inner ring connecting hole which is matched and corresponds to the inner ring positioning threaded hole on the bearing inner ring, fasteners are arranged in the inner ring connecting hole and the inner ring positioning threaded hole in a penetrating mode to realize the connection of the inner ring sealing cover and the inner ring, and a sealing ring is arranged between the inner ring sealing cover and the end face of the inner ring.
Has the advantages that: the outer ring connecting hole which is matched and corresponds to the inner ring positioning threaded hole in the bearing inner ring is formed in the inner ring sealing cover, the structure of the bearing inner ring is utilized, a connecting structure does not need to be arranged on the bearing inner ring for installing the inner ring sealing cover, and the structure of the turntable bearing sealing testing device is simplified. Meanwhile, the sealing ring is arranged between the inner ring sealing cover and the end face of the inner ring, so that reliable sealing between the inner ring sealing cover and the end face of the inner ring is ensured, and the influence on the reliability of a test result caused by poor sealing between the inner ring sealing cover and the end face of the inner ring is avoided.
Further, the outer ring sealing cover comprises a circular disc body, an annular flange is arranged on the outer edge of the circular disc body, and the annular flange is attached to the end face of the outer ring and connected with the end face of the outer ring to achieve attachment connection of the outer ring sealing cover and the outer ring.
Has the advantages that: the annular flange is connected with the laminating of outer lane terminal surface as the connection structure between outer lane closing cap and the outer lane terminal surface, can play the supporting role between the circular disk body of outer lane closing cap and outer lane, and the distance of the axis extending direction of bearing is followed to the circular disk body portion of increase outer lane closing cap and bearing excircle terminal surface, avoids setting up the inflation joint and the bearing inner race on the outer lane closing cap to interfere, is convenient for compressed gas to be full of in the space between bearing inner race and the outer lane.
Further, the inner ring sealing cover comprises a circular disc body, a boss is arranged in the middle of the circular disc body, and the boss can be hermetically inserted into an inner cavity of the inner ring.
Has the advantages that: the boss of the inner ring sealing cover is in sealing insertion fit with the inner cavity of the inner ring, so that the inner ring sealing cover is installed on the inner ring in a guiding and positioning mode, and meanwhile, the reliability of sealing connection between the inner ring sealing cover and the inner ring is improved.
Further, the inflation connector is disposed on the outer ring cover.
Has the advantages that: because the outer ring closing cap needs to be connected with the end face of the outer ring of the bearing in a sealing mode, the size of the outer ring closing cap is matched with the radial size of the outer ring of the bearing, the area is relatively large, a mounting base body with a larger area can be provided for the inflation connector, and the inflation connector is convenient to set.
Further, the pressure detection device is provided on the outer ring cover.
Has the advantages that: because the outer ring closing cap needs to be connected with the end face of the outer ring of the bearing in a sealing mode, the size of the outer ring closing cap is matched with the radial size of the outer ring of the bearing, the area is relatively large, a mounting base body with a larger area can be provided for the pressure detection device, and the pressure detection device is convenient to set.
The sealing test system for the turntable bearing adopts the following technical scheme:
the turntable bearing sealing test system comprises a high-pressure air source and a turntable bearing sealing test device, wherein the turntable bearing sealing test device comprises an outer ring sealing cover and an inner ring sealing cover, the outer ring sealing cover is used for being in sealing connection with one side end face of a sealing ring of an outer ring of a bearing, the inner ring sealing cover is used for being in sealing connection with the end face of an inner ring of the bearing, the outer ring sealing cover and the inner ring sealing cover are connected with the bearing and then enclose a sealing inner cavity with the bearing, one of the outer ring sealing cover and the inner ring sealing cover is provided with an inflating joint connected with the high-pressure air source and used for inflating compressed air into the sealing inner cavity, one of the outer ring sealing cover and the inner ring sealing cover is further provided with a pressure detection device communicated with the sealing inner cavity, and the pressure detection device judges the.
The invention has the beneficial effects that: compared with the loading pressurization test method in the prior art, the invention is specially provided with the turntable bearing sealing test system, when in use, the outer ring sealing cover of the turntable bearing sealing test device of the turntable bearing sealing test system is hermetically connected with the end surface of one side of the bearing outer ring, which is opposite to the sealing ring, and the inner ring sealing cover is hermetically connected with the bearing inner ring, so that the outer ring sealing cover, the bearing outer ring, the sealing ring, the bearing inner ring and the inner ring end cover jointly enclose a sealed inner cavity, the sealed inner cavity comprises a space between the bearing inner ring and the bearing outer ring, during test, compressed gas is injected into the sealed inner cavity through the inflation connector connected with a high-pressure gas source, the sealed inner cavity and the sealed outer ring form a pressure difference, and the sealing performance of the bearing can be conveniently judged according to the change of the. Because only need in the test process with outer lane closing cap and inner circle closing cap and bearing's outer lane and inner circle correspond the installation and dismantle can, need not carry out dismouting machine operation to the bearing, just also need not to consider the position cooperation relation between bearing and the actual installation cooperation structure and the problem of installation accuracy, the dismouting work of simplifying among the test process improves efficiency of software testing.
Further, the inner ring sealing cover is connected to the end face of the inner ring, far away from the sealing ring in a sealing mode.
Has the advantages that: the inner ring sealing cover is connected to the end face of one side, far away from the sealing ring, of the inner ring, the inner ring sealing cover and the outer ring sealing cover are arranged at the same axial end of the bearing, the distance between the inner ring sealing cover and the outer ring sealing cover is reduced, the volume of the sealing inner cavity is reduced, the inflation quantity of compressed gas rushing into the sealing inner cavity is reduced, the inflation time is shortened, and the detection efficiency is improved. Meanwhile, the volume of the sealed inner cavity is small, and when the bearing sealing structure leaks air, the reading variation of the pressure detection device is larger, so that the accuracy of a detection result can be improved. In addition, no matter the ball loading hole of the turntable bearing to be tested is arranged on the outer ring or the inner ring, the turntable bearing sealing test device with the structure can detect the sealing matching degree between the plug of the bearing and the ball loading hole and can detect whether the sealing ring falls off or not.
Furthermore, the outer ring sealing cover is provided with an outer ring connecting hole which is matched and corresponding to an outer ring positioning threaded hole in the bearing outer ring, fasteners are arranged in the outer ring connecting hole and the outer ring positioning threaded hole in a penetrating mode to realize connection of the outer ring sealing cover and the outer ring, and a sealing ring is arranged between the outer ring sealing cover and the end face of the outer ring.
Has the advantages that: the outer ring sealing cover is provided with the outer ring connecting hole which is matched and corresponds to the outer ring positioning threaded hole in the bearing outer ring, the structure of the bearing outer ring is utilized, a connecting structure is not required to be additionally arranged on the bearing outer ring for installing the outer ring sealing cover, and the structure of the turntable bearing sealing testing device is simplified. Meanwhile, due to the arrangement of the sealing ring between the outer ring sealing cover and the outer ring end face, the outer ring sealing cover and the outer ring end face are reliably sealed, and the problem that the reliability of a test result is influenced due to poor sealing between the outer ring sealing cover and the outer ring end face is avoided.
Furthermore, the inner ring sealing cover is provided with an inner ring connecting hole which is matched and corresponds to the inner ring positioning threaded hole on the bearing inner ring, fasteners are arranged in the inner ring connecting hole and the inner ring positioning threaded hole in a penetrating mode to realize the connection of the inner ring sealing cover and the inner ring, and a sealing ring is arranged between the inner ring sealing cover and the end face of the inner ring.
Has the advantages that: the inner ring sealing cover is provided with the inner ring connecting hole which is matched and corresponding to the inner ring positioning threaded hole on the bearing inner ring, the structure of the bearing inner ring is utilized, a connecting structure is not required to be arranged on the bearing inner ring for installing the inner ring sealing cover, and the structure of the turntable bearing sealing testing device is simplified. Meanwhile, the sealing ring is arranged between the inner ring sealing cover and the end face of the inner ring, so that reliable sealing between the inner ring sealing cover and the end face of the inner ring is ensured, and the influence on the reliability of a test result caused by poor sealing between the inner ring sealing cover and the end face of the inner ring is avoided.
Further, the outer ring sealing cover comprises a circular disc body, an annular flange is arranged on the outer edge of the circular disc body, and the annular flange is attached to the end face of the outer ring and connected with the end face of the outer ring to achieve attachment connection of the outer ring sealing cover and the outer ring.
Has the advantages that: the annular flange is connected with the laminating of outer lane terminal surface as the connection structure between outer lane closing cap and the outer lane terminal surface, can play the supporting role between the circular disk body of outer lane closing cap and outer lane, and the distance of the axis extending direction of bearing is followed to the circular disk body portion of increase outer lane closing cap and bearing excircle terminal surface, avoids setting up the inflation joint and the bearing inner race on the outer lane closing cap to interfere, is convenient for compressed gas to be full of in the space between bearing inner race and the outer lane.
Further, the inner ring sealing cover comprises a circular disc body, a boss is arranged in the middle of the circular disc body, and the boss can be hermetically inserted into an inner cavity of the inner ring.
Has the advantages that: the boss of the inner ring sealing cover is in sealing insertion fit with the inner cavity of the inner ring, so that the inner ring sealing cover is installed on the inner ring in a guiding and positioning mode, and meanwhile, the reliability of sealing connection between the inner ring sealing cover and the inner ring is improved.
Further, the inflation connector is disposed on the outer ring cover.
Has the advantages that: because the outer ring closing cap needs to be connected with the end face of the outer ring of the bearing in a sealing mode, the size of the outer ring closing cap is matched with the radial size of the outer ring of the bearing, the area is relatively large, a mounting base body with a larger area can be provided for the inflation connector, and the inflation connector is convenient to set.
Further, the pressure detection device is provided on the outer ring cover.
Has the advantages that: because the outer ring closing cap needs to be connected with the end face of the outer ring of the bearing in a sealing mode, the size of the outer ring closing cap is matched with the radial size of the outer ring of the bearing, the area is relatively large, a mounting base body with a larger area can be provided for the pressure detection device, and the pressure detection device is convenient to set.
Drawings
FIG. 1 is a schematic diagram of a prior art construction of a slew bearing;
FIG. 2 is a schematic diagram of the assembly and cooperation of embodiment 1 of the sealing test device for a turntable bearing according to the present invention and the turntable bearing in FIG. 1;
FIG. 3 is a schematic structural diagram of an outer ring cover of the turntable bearing seal testing device in FIG. 2, which is provided with an inflation connector and a pressure detection device;
FIG. 4 is a schematic structural diagram of an inner ring cover of the turntable bearing seal testing apparatus shown in FIG. 2;
in the figure: 1. an outer ring; 2. an outer ring positioning threaded hole; 3. a rolling body; 4. an inner ring; 5. an inner ring positioning threaded hole; 6. an isolation block; 7, a plug; 8. a taper pin; 9. a seal ring; 10. an outer ring is covered; 11. sealing the inner ring; 12, an O-shaped sealing ring I; an O-shaped sealing ring II; 14. an inflation joint; 15. a pressure detection device; 16. a bolt I; 17. and a bolt II.
Detailed Description
In this embodiment, the bearing to be tested is a turntable bearing with a ball loading hole formed in an outer ring, an outer ring sealing cover 10 is hermetically connected to a side end face, facing away from a sealing ring 9, of an outer ring 1 of the bearing, an inner ring sealing cover 11 is hermetically connected to one end, close to the sealing ring 9, of an inner ring 4 of the bearing, the outer ring sealing cover 10, the outer ring 1, the sealing ring 9, the inner ring 4 and the inner ring sealing cover 11 are sequentially connected to enclose a closed inner cavity, and a space for accommodating a rolling element, an isolation block and lubricating grease between a slideway of the outer ring 1 and a slideway of the.
The inflation connector 14 and the pressure detection device 15 are installed on the outer ring sealing cover 10, the air outlet of the inflation connector 14 extends into the sealed inner cavity in a hanging mode, the air inlet is connected with a high-pressure air source through a hose and used for flushing compressed air into the sealed inner cavity, and the pressure detection device 15 is used for detecting the pressure value in the sealed inner cavity. After compressed gas is filled into the sealing inner cavity to enable the pressure in the sealing inner cavity to reach a set value, the bearing pressure-bearing capacity and the sealing performance of the bearing can be judged according to whether the reading of the pressure detection device changes or not. The pressure detecting device 15 may be one of a pressure indicator, a pressure gauge, or a pressure detecting sensor with a display device.
Through connecting inner circle closing cap 11 in the one end that is close to sealing washer 9 of inner circle 4 for this sealed testing arrangement can set up the sealed cooperation degree and whether the sealing washer takes place to drop between the stopper of the carousel bearing on the bearing outer lane and the dress ball hole to dress ball hole and detect, and set up including the dress ball hole and need not the bearing that detects the sealed cooperation degree between stopper and the dress ball hole, this sealed testing arrangement can take place to drop its sealing washer and detect effectively.
Regarding the installation positions of the inflation connector and the pressure detection device, in other embodiments, the inflation connector may be disposed on one of the outer ring cover and the inner ring cover, and the pressure detection device may be disposed on one of the outer ring cover and the inner ring cover, depending on the actual use situation.
The concrete structure of outer lane closing cap 10 in this embodiment is as shown in fig. 3, and outer lane closing cap 10 main part is circular disk body, and the edge of circular disk body is equipped with annular flange, and the terminal surface size of annular flange and the terminal surface size phase-match of the bearing inner race that awaits measuring one end that faces away from sealing washer 9 can realize sealed butt joint, and outer lane closing cap 10 passes through annular flange and bearing inner race 1 terminal surface sealing connection. The arrangement of the flange ensures that after the outer ring sealing cover 10 is connected with the end face of the outer ring 1 in a sealing manner, the circular disc body keeps a certain distance from the end face of the bearing and cannot be attached to the corresponding end face of the inner ring 4, communication between all parts of the sealing inner cavity is ensured, compressed gas can be filled in the whole sealing inner cavity to form pressure difference between the inside and the outside of the seal, and therefore whether the sealing ring 9 can fall off during pressure bearing and the tightness of the matched sealing fit between the plug 7 and the ball mounting hole is checked.
An inner ring connecting hole matched with the outer ring positioning threaded hole 2 on the bearing outer ring is formed in the convex edge of the outer ring sealing cover 10, a screw of a bolt I16 penetrates through the inner ring connecting hole to be connected with the outer ring positioning threaded hole 2, and the outer ring sealing cover 10 is fixed on the outer ring 1. An annular sealing groove is further formed in the end face of the flange of the outer ring sealing cover 10, an O-shaped sealing ring I12 is arranged in the sealing groove, the O-shaped sealing ring I12 is extruded after the outer ring sealing cover 10 is connected with the outer ring 1, and the reliability of sealing connection between the outer ring sealing cover 10 and the outer ring 1 is improved.
In other embodiments, a connecting hole may be additionally formed in the outer ring of the bearing to be tested to fix the outer ring sealing cover on the end face of the outer ring, or a fixing clamp is used to clamp the outer ring sealing cover on the outer ring to realize the sealing connection between the outer ring sealing cover and the outer ring. The end face of the annular flange of the outer ring sealing cover can be directly pressed between the outer ring sealing cover and the end face of the outer ring without being provided with a sealing groove, and the O-shaped sealing ring I can be replaced by a sealing gasket.
The structure of the inner ring sealing cover 11 is shown in fig. 4, the main body of the inner ring sealing cover 11 is also a circular disc body, the middle part of the inner ring sealing cover 11 protrudes upwards to form a boss which can be inserted into the inner cavity of the inner ring 4 in a sealing manner, the edge of the circular disc body of the inner ring sealing cover 11 is provided with an inner ring connecting hole matched with the inner ring positioning threaded hole 5 on the inner ring of the bearing, the inner ring connecting hole is a threaded hole, and a screw rod of a bolt II 17 penetrates through the inner ring positioning threaded hole 5 and then is in threaded connection with the inner ring connecting. An annular sealing groove is also formed in the edge of the inner ring sealing cover 11, an O-shaped sealing ring II 13 is arranged in the sealing groove, and the O-shaped sealing ring II 13 is extruded after the inner ring sealing cover 11 and the inner ring 4 are connected, so that the reliability of sealing connection between the outer ring sealing cover 10 and the end face of the outer ring 1 is improved.
In other embodiments, the inner ring sealing cover can be only a circular disc body as a whole, the annular sealing groove can be omitted, and the sealing ring is directly pressed between the inner ring sealing cover and the end face of the inner ring. The O-shaped sealing ring II can be replaced by a sealing gasket. The inner ring connecting hole is not a threaded hole, and at the moment, the bolt II penetrates through the inner ring connecting hole and then is in threaded connection with the inner ring positioning threaded hole.
In this embodiment, inner circle closing cap 11 sealing connection is on the terminal surface of the one end that inner circle 4 was provided with sealing washer 9, in other embodiments, the inner circle closing cap can also sealing connection on the terminal surface of the one end of inner circle dorsad sealing washer, the height of the flange of outer lane closing cap is greater than the thickness of the circular disk body of inner circle closing cap, ensure that gas filled joint's gas outlet can not be by the shutoff of inner circle closing cap, this moment, no matter the dress ball hole of the bearing that awaits measuring is seted up on outer lane or on the inner circle, the sealed degree of fit between this structure's carousel bearing seal testing arrangement all can both detect the stopper of bearing and the dress ball hole and can detect whether the sealing washer takes place.
The application method of the turntable bearing seal testing device comprises the following steps:
after the sealing test device and the bearing to be tested are assembled, the inflation connector 14 is communicated with a high-pressure air source, compressed air is injected into the sealed inner cavity through the inflation connector 14, the reading of the pressure detection device 15 is observed until the pressure value in the sealed inner cavity reaches a standard set value XMPa required by a working environment, the inflation is stopped, the reading of the pressure detection device 15 is read after the pressure detection device is stood for a period of time and is compared with the set standard set value XMPa, if the reading of the pressure detection device after the standing is the same as the standard set value or the difference value is within an error range, the sealing fit between the plug 7 and the ball installing hole is proved to meet the working requirement of the bearing, the sealing ring 9 is tightly sealed and cannot fall off under the pressure, namely, the sealing of the bearing to be tested is qualified; otherwise, the sealing matching degree between the plug 7 and the ball mounting hole cannot meet the working requirement of the bearing, the sealing ring 9 is not tight in sealing or can fall off under the pressure, and the sealing performance of the bearing is not satisfactory. Besides, the bearing limit of the bearing seal can be tested by gradually increasing the gas pressure in the closed inner cavity and reading the reading of the pressure detection device 15 when the bearing seal fails.
The difference between embodiment 2 of the turntable bearing seal testing device of the present invention and embodiment 1 is that: in this embodiment, the ball loading hole of the turntable bearing to be tested is formed in the bearing inner ring, and correspondingly, the inner ring sealing cover of the turntable bearing sealing test device must be connected to the end face of one side, back to the sealing ring, of the inner ring in a sealing manner.
The difference between embodiment 3 of the turntable bearing seal testing device of the present invention and embodiment 1 is that: an annular flange is not arranged on the edge of the outer ring seal cover, but a long groove is arranged on the end face, used for being connected with the bearing outer ring in a sealing manner, of the outer ring seal cover, and the position and the length of the long groove meet the following requirements: after the outer ring sealing cover is connected with the bearing outer ring in a sealing mode, the inner side and the outer side of the bearing inner ring can be communicated through the elongated grooves, and therefore the sealing inner cavity cannot be isolated into two independent cavities.
The invention relates to an embodiment of a turntable bearing seal testing system, which comprises the following steps: the device comprises a turntable bearing seal testing device and a high-pressure air source, wherein the turntable bearing seal testing device specifically adopts the structure and the use method of the embodiment 1 of the turntable bearing seal testing device, and in other embodiments, the turntable bearing seal testing device can also adopt the structures and the use methods of the embodiments 2 and 3 of the turntable bearing seal testing device.
Claims (5)
1. The utility model provides a carousel bearing seals testing arrangement which characterized in that: the bearing sealing device comprises an outer ring sealing cover and an inner ring sealing cover, wherein the outer ring sealing cover is used for being in sealing connection with the end face of one side, opposite to a sealing ring, of an outer ring of the bearing, the inner ring sealing cover is used for being in sealing connection with the end face of an inner ring of the bearing, the outer ring sealing cover and the inner ring sealing cover are connected with the bearing and then enclose a sealing inner cavity with the bearing, one of the outer ring sealing cover and the inner ring sealing cover is provided with an inflation connector which is used for being connected with a high-pressure air source and used for filling compressed air into the sealing inner cavity, one of the outer ring sealing cover and the inner ring sealing cover is also provided with a pressure detection device which is used for being; the inner ring sealing cover is connected to the end face of one side of the inner ring, which is far away from the sealing ring, in a sealing manner; the outer ring sealing cover is provided with an outer ring connecting hole which is matched and corresponding to an outer ring positioning threaded hole on the bearing outer ring, fasteners are penetrated in the outer ring connecting hole and the outer ring positioning threaded hole to realize the connection of the outer ring sealing cover and the outer ring, and a sealing ring is arranged between the outer ring sealing cover and the end surface of the outer ring; the inner ring sealing cover is provided with an inner ring connecting hole which is matched and corresponding to the inner ring positioning threaded hole on the bearing inner ring, a fastener is penetrated in the inner ring connecting hole and the inner ring positioning threaded hole to realize the connection of the inner ring sealing cover and the inner ring, and a sealing ring is arranged between the inner ring sealing cover and the end surface of the inner ring; the outer ring sealing cover comprises a circular disc body, an annular flange is arranged on the outer edge of the circular disc body, and the annular flange is attached to the end face of the outer ring to realize the attachment connection of the outer ring sealing cover and the outer ring; the height of the annular flange of the outer ring sealing cover is larger than the thickness of the circular disc body of the inner ring sealing cover.
2. The slewing bearing seal testing arrangement of claim 1, wherein: the inner ring sealing cover comprises a circular disc body, a boss is arranged in the middle of the circular disc body, and the boss can be hermetically inserted into an inner cavity of the inner ring.
3. The slewing bearing seal testing arrangement of claim 1, wherein: the inflation connector is arranged on the outer ring sealing cover.
4. The slewing bearing seal testing arrangement of claim 3, wherein: the pressure detection device is arranged on the outer ring sealing cover.
5. The utility model provides a carousel bearing seals test system which characterized in that: the turntable bearing sealing testing device comprises a high-pressure gas source and a turntable bearing sealing testing device, wherein the turntable bearing sealing testing device is the turntable bearing sealing testing device as claimed in any one of claims 1 to 4, and the high-pressure gas source is connected with an inflation connector of the turntable bearing sealing testing device and is used for filling compressed gas into a sealing inner cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811649519.7A CN109612656B (en) | 2018-12-30 | 2018-12-30 | Sealing test device and sealing test system for turntable bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811649519.7A CN109612656B (en) | 2018-12-30 | 2018-12-30 | Sealing test device and sealing test system for turntable bearing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109612656A CN109612656A (en) | 2019-04-12 |
| CN109612656B true CN109612656B (en) | 2021-01-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811649519.7A Active CN109612656B (en) | 2018-12-30 | 2018-12-30 | Sealing test device and sealing test system for turntable bearing |
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Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102323014A (en) * | 2011-05-30 | 2012-01-18 | 浙江新昌皮尔轴承有限公司 | Bearing sealing performance testing method and die for testing |
| CN202301438U (en) * | 2011-09-22 | 2012-07-04 | 洛阳轴承研究所有限公司 | Pin column type turntable bearing |
| CN204716753U (en) * | 2015-06-17 | 2015-10-21 | 中机洛阳轴承科技有限公司 | With the sealing cylinder roller bearing of mounting flange |
| CN205503770U (en) * | 2016-03-07 | 2016-08-24 | 洛阳轴研科技股份有限公司 | Block structure in turntable bearing dress ball hole |
| CN206670867U (en) * | 2017-05-03 | 2017-11-24 | 人本集团有限公司 | Hub bearing sealing property testing equipment |
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2018
- 2018-12-30 CN CN201811649519.7A patent/CN109612656B/en active Active
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| CN109612656A (en) | 2019-04-12 |
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