Waterproof test device

Abstract

To provide a waterproof test device capable of performing a waterproof test on a rolling bearing in an operating condition.SOLUTION: A waterproof test device for testing the waterproof performance of a sealed rolling bearing B, comprises: a rotary table 4 on which the rolling bearing B is mounted; table drive means 8 for rotationally driving the rotary table 4; a plurality of high-pressure water injection nozzles 5 arranged to face the rolling bearing B mounted on the rotary table 4; high-pressure water supply means 9 for supplying high-pressure water to the high-pressure water injection nozzles 5; bearing drive means 6 mounted on the rotary table 4 for placing the rolling bearing B in an operating state; and control means 7. The control means rotates the rotary table 4 by operating the table drive means 8, places the rolling bearing B in the operating state by operating the bearing drive means 6, and further operates the high-pressure water supply means 9 to inject high-pressure water from the high-pressure water injection nozzles 5 toward the rolling bearing B, thereby exposing the rolling bearing B to a high-pressure water injection environment to conduct a waterproof test.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a waterproof testing device, and more particularly to a waterproof testing device used to test the waterproof performance of sealed rolling bearings. [Background technology]

[0002] In the field of rolling bearings, sealed rolling bearings have been proposed as bearings that prevent the intrusion of foreign matter (dust, moisture, etc.) from the outside while preventing the leakage of lubricant contained inside. As is well known, some sealed rolling bearings are equipped with sealing structures such as slingers, labyrinths, and oil seals at both axial ends of the annular space formed between the inner ring and outer ring.

[0003] The performance (waterproof performance) of rolling bearings with sealed structures is sometimes evaluated, for example, by the Japanese Industrial Standards' "Protection Class for Electrical Machinery and Equipment Enclosures (JIS0920)" or the International Organization for Standardization's (ISO) "IP (International Protection) Code."

[0004] For example, the conditions for obtaining IPX9K specified in the IP Code are to use a nozzle of a specified shape (IPX9K nozzle) and spray / discharge 80°C hot water from this nozzle onto the test object (test specimen) at a water pressure of 8MPa to 10MPa and a water rate of 14 to 16 liters per minute. The distance between the test specimen and the nozzle is 10 to 15cm, and the water is sprayed at angles (azimuth) of 0 degrees, 30 degrees, 60 degrees, and 90 degrees, with the test specimen rotated on a horizontal plane for 30 seconds in each direction while spraying, and no water is allowed to enter.

[0005] Therefore, for this type of evaluation, a waterproof testing device (see, for example, Patent Document 1) capable of spraying high-pressure hot water onto the test specimen under the above-mentioned conditions is used. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Japanese Patent Application Publication No. 2017-102018 Summary of the Invention [Problem to be solved by the invention]

[0007] However, conventional waterproof testing devices have the following problems, and improvements are desired.

[0008] That is, while conventional waterproof testing equipment has a structure for rotating a test object on a horizontal plane, it does not have a means for putting the rolling bearing under test into operation. As a result, the waterproof performance of a rolling bearing that rotates on a horizontal plane is evaluated while it is not in operation, with both the inner ring and outer ring stationary.

[0009] However, it goes without saying that rolling bearings are used in operation with at least one of the inner ring or outer ring rotating, and unless a waterproof test is carried out in an operating state, it is not possible to evaluate the practical waterproof performance of a rolling bearing.

[0010] The present invention has been made in view of the above problems, and an object of the present invention is to provide a waterproof testing device that can perform a waterproof test on a rolling bearing while it is in operation. [Means for solving the problem]

[0011] In order to achieve the above object, the waterproof testing apparatus of the present invention is a waterproof testing apparatus for testing the waterproof performance of sealed rolling bearings, and comprises a turntable on which the rolling bearing to be tested is mounted, table driving means for driving the turntable to rotate, a plurality of high-pressure water jet nozzles arranged facing the test specimen mounted on the turntable, high-pressure water supply means for supplying high-pressure water to the high-pressure water jet nozzles, bearing driving means mounted on the turntable for putting the rolling bearing into operation, and control means, wherein the control means has a control configuration for activating the table driving means to rotate the turntable, activating the bearing driving means to put the rolling bearing into operation, and further activating the high-pressure water supply means to spray high-pressure water from the high-pressure water jet nozzles towards the test specimen, thereby exposing the test specimen to a high-pressure water jet environment.

[0012] In this waterproof testing apparatus, the rolling bearing to be tested is mounted on a rotating table. The rotating table is rotated by a table driving means, and the rolling bearing rotates together with the rotating table. The rotating table is equipped with a bearing driving means that puts the rolling bearing into operation, so that the rolling bearing can be put into operation while rotating together with the rotating table. Therefore, in this invention, high-pressure water can be sprayed from the high-pressure water spray nozzle onto the rolling bearing while it is in operation, and the specified waterproof test can be performed on the rolling bearing while it is in operation.

[0013] The present invention has the following configuration as a preferred embodiment. (1) The device has a housing and a waterproof cover, and the housing houses the table drive means, the high-pressure water supply means, and the control means, and the rotary table and the high-pressure water spray nozzle are arranged above an upper panel having a collection tray for collecting the used high-pressure water, and the waterproof cover is arranged above the housing and has a container-like shape that covers the rotary table and the high-pressure water spray nozzle.

[0014] (2) The device housing is characterized by having wheels with a swivel mechanism and wheels with a braking mechanism at the bottom.

[0015] (3) The high-pressure water supply means has a hot water tank for storing hot water, and a high-pressure pump having an intake side connected to the hot water tank and an exhaust side connected to the high-pressure water injection nozzle via an electromagnetic valve, and the hot water tank has a water replenishment mechanism for recovering used high-pressure water injected from the high-pressure water injection nozzle via the recovery tray and replenishing the water.

[0016] The bearing driving means has a rotation shaft for rotating the inner ring of the rolling bearing to be inspected. [Effects of the Invention]

[0017] According to the present invention, in a waterproof testing apparatus for testing the waterproof performance of sealed rolling bearings, a turntable on which the rolling bearing to be tested is mounted is provided with bearing drive means for putting the rolling bearing into operation, and the control means can operate the table drive means to rotate the turntable, operate the bearing drive means to put the rolling bearing into operation, and further operate the high-pressure water supply means to spray high-pressure water from the high-pressure water spray nozzle toward the test specimen, exposing the rolling bearing in operation to a high-pressure water spray environment. This makes it possible to perform a specified waterproof test on the rolling bearing while it is in operation. [Brief explanation of the drawings]

[0018] [Figure 1] 1 is a perspective view schematically showing an example of a waterproof testing device according to the present invention. [Figure 2] FIG. 2 is a perspective view schematically showing the rear side of the waterproof testing device. [Figure 3] FIG. 3 is a cross-sectional view showing the structure of a rotary table in the waterproof testing device. [Figure 4] FIG. 2 is a perspective view schematically showing a state in which a test specimen is attached to a rotary table of the waterproof testing device. [Figure 5]FIG. 2 is a perspective view schematically showing an example of a high-pressure pump of the waterproof testing device. [Figure 6] 2 is a block diagram showing an example of a configuration of a high-pressure water supply means and a circulation path of used high-pressure water in the waterproofing test device. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0019] Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. 1 and 2 show an example of a waterproof testing device 1 according to the present invention. For convenience, part of the device housing 2 is shown as a see-through portion so that the internal structure of the device housing 2 can be seen.

[0020] The waterproof testing device 1 shown in the figure is a device for testing the waterproof performance of a sealed rolling bearing B, and complies with the above-mentioned IPX9K standard. Its main components are a turntable 4 on which the rolling bearing B to be tested (specimen) is mounted, a high-pressure water injection nozzle 5 that sprays high-pressure water onto the rolling bearing B mounted on the turntable 4, bearing drive means 6 that puts the rolling bearing B mounted on the turntable 4 into an operating state, and control means 7 that controls these.

[0021] Here, in the illustrated example, the rolling bearing B to be tested is an insert bearing in which the rolling bearing B is housed in a bearing housing BC (see Figures 3 and 4), but the rolling bearing B to be tested is not limited to an insert bearing, and it is of course also possible to test a rolling bearing B that does not have a bearing housing BC.

[0022] The waterproof testing device 1 comprises a device housing 2 that houses the drive mechanism of the rotary table 4 and the like, and a waterproof cover 3 that prevents high-pressure water sprayed from the high-pressure water spray nozzle 5 from splashing outside the device.

[0023] The device housing 2 is composed of a main body 10 that houses a table driving means 8 that rotates the rotary table 4, a high-pressure water supply means 9 that supplies high-pressure water to the high-pressure water injection nozzle 5, etc., a control box 11 that houses components of the control means 7, etc., and a caster mechanism 12 that supports the device housing 2 so that it can move horizontally.

[0024] The main body 10 is configured as a box-shaped case with a control box 11 on one side, and houses the table driving means 8, high-pressure water supply means 9, etc. inside, and is equipped on its top panel with a recovery tray 13 for recovering used high-pressure water, which will be described later. The recovery tray 13 is a receptacle for recovering the used water that falls after being sprayed from the high-pressure water spray nozzle 5 and directing it into the return pipe 42, which will be described later, and is configured, for example, with an inclined surface that guides the fallen water to the connection port with the return pipe 42.

[0025] The control box section 11 is configured as a box-shaped case with an inclined top panel 11a, and the top panel 11a is provided with an operation section 14 and a display section 15 of the waterproof test device 1. The control means 7 housed in the control box section 11 is a control device that controls each section of the waterproof test device 1, and this control means 7 controls the table drive means 8, bearing drive means 6, high-pressure water supply means 9, etc., which will be described later.

[0026] The caster mechanism 12 is a wheel provided on the bottom of the device housing 2, and is composed of brake casters 12a equipped with a braking mechanism and path setting casters 12b equipped with a swivel mechanism that allows the direction of the wheels to be freely changed. In this embodiment, a pair of brake casters 12a is provided on the bottom on the control box side, and a pair of path setting casters 12b is provided on the bottom on the opposite side from the control box, and these caster mechanism 12 allow the waterproof testing device 1 to be moved and placed in any position.

[0027] The turntable 4 is a disk-shaped table for rotating the rolling bearing B, which is the test object, on a horizontal plane, and is attached to the tip of a table rotation shaft 16. The table rotation shaft 16, together with a table drive motor 17 and an orthogonal axis reducer (not shown), constitutes the table drive means 8. The table drive motor 17 is composed of an electric motor that can be controlled by the control means 7, and is fixed inside the main body 10, with its output shaft connected to the base end of the table rotation shaft 16 via the orthogonal axis reducer.

[0028] The table rotation shaft 16 is arranged to rise vertically from the orthogonal axis reducer, and its tip penetrates the top panel of the main body 10 and protrudes above the collection tray 13. The tip of the table rotation shaft 16 is provided with a connector mechanism 18 (for example, a rotary continuous connector equipped with a slip ring) for supplying power and transmitting signals to the bearing drive motor 22 described below, and the tip of the table rotation shaft 16 is attached to the center of the underside of the turntable 4 via this connector mechanism 18. As a result, the turntable 4 is arranged above the top panel (collection tray 13) of the main body 10, and is configured to be rotatable in conjunction with the table drive motor 17.

[0029] 3 and 4, a bearing mounting portion 19 for detachably mounting a rolling bearing B is provided in the center of the upper surface of the turntable 4. In this embodiment, the bearing mounting portion 19 is in the form of a base that is compatible with mounting of an insert bearing, and a bearing housing BC of the insert bearing is detachably mounted to this base. Note that the bearing mounting portion 19 can be configured as any structure other than a base as long as it is capable of detachably fixing the rolling bearing B, and may be configured, for example, as a chucking mechanism that detachably grips the rolling bearing B.

[0030] The rotary table 4 is also equipped with bearing drive means 6 that puts the rolling bearing B mounted on the bearing mounting portion 19 into operation. The bearing drive means 6 is mainly composed of a bearing drive motor 22, a rotating shaft 23 one end of which is mounted on the inner ring of the rolling bearing B, a drive transmission mechanism 24 that transmits the rotation of the bearing drive motor 22 to the rotating shaft 23, and a rotating shaft support holder 25 that supports the other end of the rotating shaft 23.

[0031] The bearing drive motor 22 is an electric motor that can be controlled by the control means 7, and is attached to the underside of the turntable 4. The bearing drive motor 22 is electrically connected to the control means 7 via the connector mechanism 18 described above, and can be controlled by the control means 7 even while the turntable 4 is rotating. In this embodiment, the bearing drive motor 22 is attached to the underside of the turntable 4 to prevent the high-pressure water sprayed from the high-pressure water spray nozzle 5 from directly hitting the bearing drive motor 22, thereby preventing damage to the bearing drive motor 22 due to water intrusion. Also, reference numeral 26 in Figure 3 is a protective cover to keep out water droplets, and by enclosing the underside of the turntable 4 with the protective cover 26 in this way, it is possible to effectively prevent water droplets from adhering to the bearing drive motor 22.

[0032] The output shaft 22a of the bearing drive motor 22 is connected to the rotating shaft 23 via a transmission belt 27. Specifically, a driving pulley 28 is provided on the output shaft 22a, and a driven pulley 29 is provided on the rotating shaft 23, with the transmission belt 27 wound around them. In this case, the transmission belt 27 is wound around the driving pulley 28 and the driven pulley 29 through a through-hole formed in the rotary table 4.

[0033] One end of the rotating shaft 23 is attached to the inner ring of the rolling bearing B, and the other end is supported by a rotating shaft support holder 25. The rotating shaft support holder 25, which supports the other end of the rotating shaft 23, is provided with a bearing 30, and the rotating shaft 23 is rotatably supported by the rotating shaft support holder 25 via the bearing 30. A driven pulley 29 that rotates integrally with the rotating shaft 23 is provided in the center of the rotating shaft 23, and the power of the bearing drive motor 22 is transmitted to the rotating shaft 23 via a transmission belt 27, so that the rotating shaft 23 is driven to rotate. When the rotating shaft 23 is driven to rotate in this way, the inner ring of the rolling bearing B is driven to rotate, and the rolling bearing B is put into operation.

[0034] The high-pressure water jet nozzle 5 is a nozzle that jets high-pressure water supplied from the high-pressure water supply means 9, and is arranged at a position facing the rolling bearing B mounted on the turntable 4. In this embodiment, in order to comply with the above-mentioned IPX9K standard, a nozzle having a shape that complies with the IPX9K standard is used as the high-pressure water jet nozzle 5. Furthermore, a plurality of high-pressure water jet nozzles 5 (four in the illustrated example, corresponding to water jet angles of 0 degrees, 30 degrees, 60 degrees, and 90 degrees) are provided as the high-pressure water jet nozzle 5 so that water can be jetted at the predetermined water jetting angles stipulated by the IPX9K standard.

[0035] Each high-pressure water jet nozzle 5 is attached to a nozzle holder 31 that fixes the position of the nozzle. The nozzle holder 31 is provided upright on the top panel of the main body 10, and its tip side is curved so as to surround the rolling bearing B on the turntable 4. Four high-pressure water jet nozzles 5 are arranged in this curved portion with their tips facing the rolling bearing B, so that high-pressure water can be jetted (discharged) at a predetermined distance and at a predetermined water discharge angle toward the rolling bearing B mounted on the turntable 4.

[0036] The high-pressure water supply means 9 mainly comprises a hot water tank 32 for storing hot water, a high-pressure pump 33 whose suction side is connected to the hot water tank 32 and whose discharge side is connected to the high-pressure water injection nozzle 5 via an electromagnetic valve 39, and a high-pressure water pipe 34 connecting the high-pressure pump 33 and the high-pressure water injection nozzle 5.

[0037] The hot water tank 32 is a tank that stores high-pressure water to be sprayed from the high-pressure water spray nozzle 5, and is equipped with a heating means (not shown) for heating the water inside. This heating means is, for example, configured as an electric heater electrically connected to the control means 7, and is configured so that the temperature of the water in the hot water tank 32 can be controlled to a predetermined temperature.

[0038] The hot water tank 32 is equipped with a water inlet 32a and a water outlet 32b. One end of a return pipe 42, the other end of which is connected to the collection tray 13, is connected to the water inlet 32a, so that used high-pressure water collected in the collection tray 13 returns to the hot water tank 32 via the return pipe 42. That is, the waterproof testing apparatus 1 shown in this embodiment is equipped with a water replenishment mechanism that collects used high-pressure water sprayed from the high-pressure water spray nozzle 5 via the collection tray 13 and replenishes it in the hot water tank 32. This water replenishment mechanism circulates and reuses the water used in the waterproof testing within the apparatus. Therefore, the waterproof testing apparatus 1 shown in this embodiment can repeatedly perform waterproof testing using the water in the hot water tank 32, thereby suppressing an increase in the running costs of the waterproof testing.

[0039] The high-pressure pump 33 is a pump for supplying hot water stored in the hot water tank 32 to the high-pressure water injection nozzle 5 at a predetermined pressure, and as shown in Figure 5, is composed mainly of a pump body 35, an electric motor 36 that drives the pump body 35, and a transmission belt 37 that transmits the power of the electric motor 36 to the pump body 35.

[0040] The pump body 35 has an inlet and an outlet (not shown), and the inlet (suction side) is connected to the outlet 32b of the hot water tank 32, and the outlet (discharge side) is connected to the high-pressure water pipe 34 via a pressure regulating valve 38. The electric motor 36 is configured to be controllable by control means 7. A transmission belt 37 is wound around the output shaft of the electric motor 36, and rotation of the output shaft of the electric motor 36 is transmitted to the pump body 35 via the transmission belt 37. As a result, the pump body 35 is started by driving the electric motor 36, and the hot water in the hot water tank 32 is supplied to the high-pressure water pipe 34 as high-pressure water.

[0041] 6 shows a schematic configuration of the high-pressure water supply means 9. As shown in the figure, the high-pressure water supply means 9 is configured by connecting a hot water tank 32 and a high-pressure water injection nozzle 5 with a high-pressure water pipe 34. From the upstream side, the high-pressure water pipe 34 is equipped with a high-pressure pump 33, a pressure regulating valve 38 that maintains the discharge pressure of the high-pressure pump 33 constant, a solenoid valve 39 that opens and closes the water passage of the high-pressure water pipe 34, a pressure transmitter 40 that detects the water pressure of the high-pressure water flowing through the high-pressure water pipe 34, and a flow transmitter 41 that detects the flow rate of the high-pressure water flowing through the high-pressure water pipe 34.

[0042] In this embodiment, the high-pressure water pipe 34 is branched for each high-pressure water jet nozzle 5 between the pressure regulating valve 38 and the solenoid valve 39, and each branched high-pressure water pipe 34 is provided with a solenoid valve 39, a pressure transmitter 40, and a flow transmitter 41 (see FIG. 6). That is, the waterproof test device 1 shown in this embodiment is configured so that the solenoid valve 39 can be opened and closed and the water pressure and flow rate can be detected for each high-pressure water jet nozzle 5.

[0043] Here, each solenoid valve 39 is electrically connected to the control means 7, and the opening and closing of each valve is controlled by the control means 7. Furthermore, electrical signals corresponding to the pressure and flow rate detected by the pressure transmitter 40 and flow transmitter 41 provided in each high-pressure water pipe 34 are input to the control means 7, and the pressure and flow rate of the high-pressure water in each high-pressure water pipe 34 are monitored by the control means 7.

[0044] 6 shows a case where a solenoid valve 39 is provided for each high-pressure water injection nozzle 5, but it is also possible to configure the high-pressure water pipe 34 to branch downstream of the solenoid valve 39, so that one solenoid valve 39 collectively controls the opening and closing of all of the high-pressure water injection nozzles 5. It is also possible to configure the pressure transmitter 40 and flow transmitter 41 to be located upstream of the branching point of the high-pressure water pipe 34, so that the pressure and flow rate of the high-pressure water supplied to the high-pressure water injection nozzles 5 are collectively detected.

[0045] The waterproof cover 3 is a waterproof cover 3 that prevents the high-pressure water sprayed from the high-pressure water spray nozzle 5 from scattering, and as shown in Figures 1 and 2, it is placed above the device housing 2 (main body 10) and has a container-like shape that covers the periphery of the turntable 4 and the high-pressure water spray nozzle 5.

[0046] In this embodiment, the waterproof cover 3 is constructed by assembling panels made of transparent resin or glass, all or part of which are made into a box shape, so that the state of the waterproof test can be visually confirmed from the outside, and is arranged to house the turntable 4 and the high-pressure water jet nozzle 5 inside. Note that the specific configuration of the waterproof cover 3 can be changed as appropriate, as long as the state of the waterproof test can be visually confirmed from the outside and the high-pressure water jetted from the high-pressure water jet nozzle 5 does not leak to the outside.

[0047] 1, reference numeral 50 denotes a heat dissipation fan for dissipating heat inside the main body 10. Also, power sources for the control means 7, display unit 15, table drive motor 17, bearing drive motor 22, heating means for the hot water tank 32, electric motor 36 for the high-pressure pump 33, etc. are not shown in FIG.

[0048] Thus, in the waterproof testing apparatus 1 configured as above, when a waterproof test is performed on a rolling bearing B, the control means 7 operates the table driving means 8 to rotate the turntable 4 and also operates the bearing driving means 6 to put the rolling bearing B into operation in response to operation of the operating unit 14. Then, the high-pressure water supply means 9 is operated to spray high-pressure water from the high-pressure water spray nozzle 5 towards the rolling bearing B being tested. In this way, the rolling bearing B on the rotating turntable 4 is put into operation, and in this state high-pressure water is sprayed onto the rolling bearing B, exposing the rolling bearing B to a high-pressure water spray environment, and a waterproof test is performed on the rolling bearing B.

[0049] At this time, the control means 7 can adjust the rotation speed of the turntable 4 by controlling the table drive motor 17. The control means 7 can also adjust the temperature (water temperature) of the high-pressure water sprayed from the high-pressure water spray nozzle 5 by controlling the heating means of the hot water tank 32. Furthermore, the control means 7 can adjust the water pressure and amount of high-pressure water sprayed from the high-pressure water spray nozzle 5 by controlling the electric motor 36 of the high-pressure pump 33. In addition, the control means 7 can adjust the operating state of the rolling bearing B, which is the test subject, by controlling the bearing drive motor 22. Therefore, in the waterproof test apparatus 1 shown in this embodiment, by performing these controls using the control means 7, it is possible to set an environment specified for the desired waterproof test (for example, IPX9K) and perform the waterproof test.

[0050] As described above, the waterproof test apparatus 1 according to the present invention makes it possible to carry out a desired waterproof test while the rolling bearing B is in operation, and therefore to carry out a waterproof test on the rolling bearing B while reproducing a condition close to an actual usage environment. Therefore, according to the present invention, it is possible to evaluate the practical waterproof performance of the rolling bearing.

[0051] The above-described embodiments are merely preferred embodiments of the present invention, and the present invention is not limited to these, and various design modifications are possible within the scope of the present invention.

[0052] For example, although the above-described embodiment shows the configuration of the waterproof test device 1 compatible with waterproof testing of the IPX9K standard, the waterproof test device 1 according to the present invention can also be compatible with standards other than IPX9K. That is, the waterproof test device 1 according to the present invention can change the shape of the high-pressure water jet nozzle 5 according to the waterproof test standard, and can also appropriately change, for example, the high-pressure water discharge distance, water discharge angle, water discharge pressure, etc.

[0053] In addition, in the above-described embodiment, the nozzle holder 31 equipped with the high-pressure water spray nozzle 5 is fixedly attached to the upper panel of the main body 10, but it is also possible to configure the nozzle holder 31 to be movable horizontally, or to configure the nozzle holder 31 to be extendable and retractable so that the height position of the high-pressure water spray nozzle 5 can be freely adjusted. [Explanation of symbols]

[0054] 1. Waterproof test equipment 2. Device housing 3 Waterproof cover 4 Rotating table 5 High-pressure water jet nozzle 6 Bearing drive means 7 Control Measures 8. Table driving means 9 High-pressure water supply means 10 Main body 11 Control box section 12 Caster mechanism 13 Collection tray 16 Table rotation axis 17 Table drive motor 19 Bearing mounting part 22 Bearing drive motor 23 Rotation axis 24 Drive transmission mechanism 25 Rotating shaft support holder 31 Nozzle holder 32 Hot water tank 33 High-pressure pump 34 High-pressure water pipe 35 Pump body 38 Pressure Regulating Valve 39 Solenoid valve 40 Pressure Transmitter 41 Flow Transmitter 42 Return pipe B. Rolling bearing (subject) BC bearing box

Claims

1. A waterproof test device for testing the waterproof performance of a sealed rolling bearing, a rotary table on which a rolling bearing to be inspected is mounted; a table driving means for driving the rotary table to rotate; a plurality of high-pressure water jet nozzles arranged facing the test object mounted on the rotary table; a high-pressure water supply means for supplying high-pressure water to the high-pressure water jet nozzle; a bearing driving means provided on the rotary table for driving the rolling bearing; a control means; The control means has a control configuration for activating the table driving means to rotate the rotary table, activating the bearing driving means to put the rolling bearings into operation, and activating the high-pressure water supply means to spray high-pressure water from the high-pressure water spray nozzle toward the test object, thereby exposing the test object to a high-pressure water spray environment. A waterproof testing device characterized by:

2. The device has a housing and a waterproof cover. the device housing accommodates the table driving means, the high-pressure water supply means, and the control means, and the rotary table and the high-pressure water jet nozzles are disposed above an upper panel having a collection tray for collecting used high-pressure water; The waterproof cover is disposed above the device housing and has a container-like shape that covers the periphery of the rotary table and the high-pressure water jet nozzle.

2. The waterproof testing device according to claim 1.

3. The device housing has wheels with a swivel mechanism and wheels with a braking mechanism at its bottom.

3. The waterproof testing device according to claim 2.

4. the high-pressure water supply means includes a hot water tank for storing hot water, and a high-pressure pump having a suction side connected to the hot water tank and a discharge side connected to the high-pressure water injection nozzle via an electromagnetic valve; The hot water tank has a water replenishment mechanism that recovers used high-pressure water sprayed from the high-pressure water spray nozzle through the recovery tray and replenishes the water.

4. The waterproof testing device according to claim 2 or 3.

5. The bearing driving means has a rotation shaft that rotates and drives the inner ring of the rolling bearing to be inspected.

4. The waterproof testing device according to claim 2 or 3.

Images