JPS5826992B2 - Rolling bearing cleaning equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention mainly relates to a cleaning device for a bearing attached to a shaft end of a rotating machine such as a main electric motor of a railway vehicle.

Vehicles on electric railways are inspected and repaired at various stages every time they travel a certain distance based on the distance they have traveled, but the focus is placed on the area around the bogies. The parts are carefully inspected.

Since the work required for critical inspections must be carried out quickly so as not to interfere with the operation of the vehicle, we use reasonable work methods for each part, and therefore we especially take care of parts that do not require disassembly. The trend is to treat the combination as it is.

For example, in a bearing part of a rotating machine such as a main electric motor, where inspection or other measures can be performed without removing the bearing from the shaft, it would be convenient if the bearing part could be processed with the bearing part attached to the shaft.

In view of this situation, the present invention cleans the bearing while it is attached to the shaft neck or by supporting the bearing (rolling bearing) at the end of the shaft and injects cleaning oil warm air gas while rotating the bearing. The purpose of the cleaning device is to switch to pressurized air injection to atomize and eliminate cleaning oil, and to properly perform cleaning operations.

Another object of the present invention is to apply rotational motion to the bearing supported on the shaft by pneumatic pressure so that an even cleaning action is performed, and this operation is carried out in the exhaust duct. This is done in a connected casing.

Another object of the present invention is to simultaneously supply pressurized oil and pressurized air to an injection nozzle to maintain a mixed state when cleaning oil is injected onto a bearing to be cleaned in a cleaning chamber in a casing connected to an exhaust duct. The air-fuel mixture is sprayed onto a bearing to be cleaned that rotates at a close distance, and the air-fuel mixture collides with the part to be cleaned, and the shock wave generated by the expansion of the air-fuel mixture as the pressure decreases is used to release deposits. The aim is to improve the

Another object of the present invention is to arrange a cleaning injection nozzle in a cleaning chamber inside a closed casing so as to face the object to be treated, so that the object to be treated can enter and exit the cleaning chamber from behind. The casing is made movable, the cleaning exhaust gas is guided and discharged through a duct connected to the side of the cleaning chamber, and the cleaning oil is collected into the oil tank from the bottom of the casing through a conduit. .

Another object of the present invention is that the casing having the above-mentioned cleaning chamber and its support mechanism are mounted on a base having an oil tank inside so that the whole can be easily handled. .

According to the present invention, the bearing is mounted equiaxially on the shaft neck or at the end of the shaft and is housed in a holder and supported, and this is inserted into the casing and the rolling bearing is injected with a pressure oil mixture. Cleaning oil is penetrated into the interior and collided with it, and the shock waves generated by the expansion as the pressure of the air-fuel mixture recovers are used to release and simultaneously wash away the deposits on the surface to be cleaned, and this operation is performed continuously for one hour. This provides the effect of rapid cleaning, allowing for effective cleaning without immersing the object in the cleaning oil, and removing adhering cleaning oil by switching to spraying only pressurized air after cleaning. All of these direct operations are carried out within the casing, allowing effective treatment and rational work without damaging the working environment.

Therefore, it is very effective for cleaning the bearings of rotating machines such as electric motors for electric railway vehicles, as described above, and can be used effectively for cleaning other rolling bearings without damaging the working environment, and the device can also be used for various purposes. It can be applied to either a stationary or portable system depending on the situation, making it an extremely excellent device.

Hereinafter, one embodiment of the present invention will be described in detail with reference to the drawings.

The one shown in FIGS. 1 and 2 is a stationary cleaning device, and 1 has a clean cleaning oil tank 3 and a cleaning oil reservoir tank 4 in use divided by a partition plate 2. It is the base.

Reference numeral 5 denotes an oil receiving tray for returning oil to the washing oil reservoir, and 6 a filter.The interior of the cylinder 6' is partitioned into two stages by filter plates 6' and 6'' to separate solid foreign matter.

Reference numeral 10 denotes a bearing cleaning mechanism, which is installed upright on a support mechanism 30 provided on the base 1 and movable back and forth and left and right. A base 31 is movable on a rail 32 via a roller 33, and a base 31 is movably supported via a rotor 34 along a plurality of longitudinal movement rails 38 arranged vertically on the base 31. The base 31 includes an operating lever 35 provided on the side of the base 1 and the end of a link mechanism 36 connected thereto is connected with a pin to a vertical member 31' fixed to the board, so that lateral movement can be performed to a set position. It is configured so that it can be fixed with a support stand 40.
is provided with a vertically moving trochanter 34 on the lower side, and is supported by a lower plate 41 with an upright internally threaded cylinder 42 at the center of the upper surface, and extensible struts 43 at the four corners of this lower plate 41, and is provided in the center. The screw shaft 44 is screwed into the female threaded tube 42, and the screw shaft 44 is rotated by operating the bundle 44' at the upper end, so that the upper plate 45 can be raised and lowered. A compression spring 46 is inserted between the upper and lower drawing boards, and a lever 31 is attached to one side of the support base 40 with a fixing operation release mechanism that can be fixed at any position. 31 against the lever 37
The attached fixing mechanism is activated.

The cleaning mechanism 10 surrounds a ball bearing 8 mounted on the shaft neck I of an electric motor, which is mounted on an evaporator conveyor (not shown) and is sent, and its housing 9, which is separately arranged on the side. The inlet/outlet 12 is opened on the rear surface, and the exhaust port 13 is provided on the peripheral side to form an exhaust duct 13'.
a cylindrical main body casing 11 connected to the main body 11;
a lid body 14 removably fixed to the front surface of the lid body 14;
A plurality of injection nozzles 15 are installed in an appropriate arrangement in the center of the
and an air injection nozzle 1 attached to the top of the main body 11.
5, a pressurized oil supply mechanism, and a pressurized air supply mechanism, the inside of the main body casing 11 is used as a washing chamber 17, and the support cylinder 18 attached to the lower part of the main body is erected and supported on the support stand 40 of the support mechanism 30. has been done.

A fitting 15' is attached to the injection nozzle 15 so that pressurized oil and air are supplied respectively, and the pressurized air is supplied to the fitting 15' via a pressure hose 21 via a supply branch 20.
A valve such as an electromagnetic on-off valve is interposed between the pressure air supply source and the branch.

Further, the pressure oil supply side to the fitting 15' is connected to the supply branch 23 by a pressure hose 24' as described above, and the oil supply pipe 26 is connected to the supply branch 23 from a hydraulic pump 24 via a switching valve 25. The suction side of the pump 24 is connected to the cleaning oil reservoir tank 4.

A flexible oil drain pipe 27 is connected from the lower discharge port 19 of the main body casing 11 through the support tube 18 to the saucer 5 in the cleaning oil reservoir tank 4. The housing 9 is attached with an annular body 28' of an appropriate width that fits around the outer periphery of the housing 9 so that the bearing 8 to be treated rotates on the shaft when the air injection nozzle 16 is attached and the jet from the tip comes in contact with the air injection nozzle 16. A large number of slats 28 are divided equally into
The rotating blade ring 28, which is configured to be tilted and fixed, is attached to the object to be processed.

To describe the operation of the apparatus of the present invention constructed as described above, first, a rotary machine is conveyed to the apparatus of the present invention with the bearing 8 to be treated and its housing 9 attached to the shaft neck 7 in a previous process by a conveyor or the like. The rotating blade ring 28 prepared in advance is fitted onto the outer periphery of the bearing . The support base 40 or the base 31 of the support mechanism 30 is moved so as to fit the casing 11 into the washing chamber 17, and the casing 11 is adjusted to be concentric with the bearing.

Next, the valve in the pressurized air supply path is first opened to inject pressurized air from each of the injection nozzles 15 and 16, and the pressurized air is injected from the injection nozzle 16 to the vane plate 28' of the rotary vane ring 28, so that the bearing housing 9 and the bearing are 8 rotates at high speed.

Then, when the valve 25 in the piping that supplies cleaning oil from the oil supply pump 24 is opened and pressure oil is sent to each injection nozzle 15, the pressure air and pressure oil are mixed in the nozzle 15, and the cleaning chamber 1 is mixed.
The air-fuel mixture is injected to a bearing 8 to be treated rotating within the bearing 7 .

Then, the mixture of cleaning oil becomes fine particles while being pressurized and is sprayed onto the bearing surface in the vicinity, so the fine particles of cleaning oil and the pressurized air are not separated and are integrally sprayed onto the surface to be cleaned. When the pressurized air-fuel mixture collides with the air-fuel mixture, its pressure is released and it rapidly expands.The expansion reaction force of this pressurized air is directly transmitted to the collided particulate cleaning oil, and this action continues. As a result, the cleaning oil is subjected to intense vibrations, and the deposits on the cleaning surface of the object to be treated are quickly released due to the synergistic effect of the impact force and the vibration force that accompanies it. The kimono, along with the washing oil flowing down, is passed through the discharge pipe 27 from the saucer 5 to the filter 6 to filter out solid matter, and only the washing oil is returned to the oil reservoir tank 4.

At this time, the bearing 8 to be treated is uniformly treated as a whole by applying rotational force via the vane ring 28 as described above.

After the cleaning operation is completed, the valve 225 on the oil supply side is closed by a preset timer, etc., and only pressurized air is sent to the injection nozzle 15 to blow away the cleaning oil that has adhered to and remains on the object to be treated, and the pressurized air cleans the object. Finish it.

After the adhered oil and fat are completely removed by cleaning with pressurized air for the required time, the pressurized air supply is cut off to stop the operation of the cleaning mechanism 10, and the support mechanism 30 is released from being fixed by the lever 37 for vertical feeding operation. If the support stand 40 is moved forward, the washed bearing 8 will be located outside the washing chamber 17.

Therefore, the motor, etc. on the side with the bearing is transferred to the next process by a conveyor, etc., and a new untreated bearing is sent to the cleaning position in the same manner as above, and the above operation is repeated again.

Then, the blade ring 28 that is fitted onto the bearing of the work cylinder and the housing can be removed and used for the next work.The above explanation has been about a stationary type, but these devices can be mounted on a trolley. Alternatively, it can be made portable by attaching wheels directly to the bottom of the base.

Furthermore, the casing of the cleaning mechanism is not limited to the above specific example, but can be changed as necessary, and other supporting mechanisms and mechanisms for moving the same may also be modified using any convenient means as necessary. can.

Furthermore, the bearing to be treated is not limited to the one attached to the rotating machine shaft as shown in the above specific example, but may be a stand-alone bearing. In such a case, a support shaft is provided as a part of the device of the present invention, By attaching the bearing to be treated and a housing for applying a preset rotational force to the shaft end of this, and allowing the bearing to be treated to be received in this housing, even ordinary bearings can be effectively cleaned. It is possible.

[Brief explanation of drawings]

The drawing shows an embodiment of the cleaning device of the present invention,
FIG. 1 is a front view of a stationary type with a portion cut away, and FIG. 2 is a side view with a portion cut away. 1...Base, 4...Washing oil reservoir, 6
... Filter, 7 ... Shaft neck, 8 ...
... Bearing to be treated, 9 ... Housing, 10 ... Washing mechanism, 11 ... Main body casing, 12 ... Entrance/exit, 13 ... ...
Exhaust port, 13'...Exhaust duct, 14...
... Lid body, 15 ... Injection nozzle, 16 ...
... Pressure air injection nozzle, 17 ... Washing chamber, 18.
...Support tube, 19...Discharge port, 20.2
3... Turnout, 21.24'... Pressure resistant hose, 24... Pump, 27... Discharge pipe, 28... Rotation Feather ring, 30...
Support mechanism, 31... Base, 32... Lateral movement rail 33... Roller, 34...
... Trochanter, 38 ... Vertical movement rail, 40 ...
... Support stand, 41 ... Lower plate, 42 ...
...Femally threaded tube, 43... Support column, 44...
・Screw shaft.

Claims (1)

[Claims] 1 A device for cleaning a rolling bearing to be treated in a state where it is fitted into a housing or a similar holding body and received at the shaft end, and which has an appropriately sized housing at the rear to receive the bearing in such a state. The main casing has a cleaning chamber inside with an inlet and an outlet for the processing body, an exhaust port connected to an exhaust duct on the side, and a cleaning oil return outlet at the bottom, and a plurality of cleaning injection nozzles configured to selectively inject a mixture of cleaning oil and pressurized air or pressurized air to the rolling bearing to be treated; and a pressurized air injection nozzle for rotating the object to be treated attached to an appropriate position on the periphery of the casing; A cleaning mechanism consisting of the following is installed on a box-shaped base, branch piping from a pressure air source is connected to each injection nozzle, and branch piping from a cleaning oil supply source is also connected to the cleaning injection nozzle, and these are controlled as appropriate. 1. A cleaning device for a rolling bearing, characterized in that a rotating blade ring having a large number of blades around the outer periphery of a holder of a bearing to be treated is attached to the outer periphery of a holding body of the bearing to be treated during cleaning.