JPH0427479A - Apparatus for washing bearing - Google Patents

Abstract

PURPOSE:To keep the performance of a rust preventing liquid for a long term by keeping a bearing after executing hot water washing treatment only for shorter time than the fixed period to pull up above the hot water surface together with a basket. CONSTITUTION:The bearing 1 as material to be washed is incorporated into the basket 2 and carried into a first chemical washing vessel 3, a second chemical washing vessel 4, hot water washing vessel 5 and rust preventing liquid vessel 6 in that order and washed. Further, at upper part of the hot water washing vessel 5, a covering body 27 opening/closing the hot water vessel 5 by linking to movement of an air injection nozzle 26, is arranged. On the upper part of hot water washing vessel 5, one pair of the air injection nozzles 26 at front and rear parts are arranged at side part and dried air is blasted toward the basket 2 and the bearing 1 incorporated in the basket 2 from plural small holes along the nozzle 26 to blow off the stuck moisture. At opening part of the hot water washing vessel 5, the covering body 27 as shakingly openable/ closable is provided and this is closed during treating to prevent spattering of water drips to outside the vessel.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a bearing cleaning device that is used, for example, during periodic maintenance of large bearings installed in railway vehicles and the like.

(Conventional technology) During periodic maintenance, bearings used in railway vehicles, etc., are cleaned to remove deteriorated grease and filled with new grease before being used again. ,
It is stored in a basket-like basket. The product is first transported to a chemical washing tank where a chemical solution such as alkaline solution is stored, where the grease is dissolved and removed, and then transported to a hot water washing tank where hot water heated to an appropriate temperature is stored to remove the chemical solution. completely washed away. Next, the bearings are carried in and immersed in a rust prevention tank in which a temporary rust prevention liquid such as kerosene is stored for rust prevention treatment, and then the bearings are taken out and filled with new grease. Batch-type conveyance is performed such that each of the above steps is sequentially applied to each of the plurality of baskets in set layers.

(Problem to be Solved by the Invention) In the conventional device that performs the above treatment, when the basket is carried into the rust prevention tank after being washed with hot water, residual moisture attached to the basket and bearings is carried into the rust prevention tank. Since the rust preventive liquid is diluted with water in a relatively short period of time, its rust preventive performance deteriorates, and the rust preventive liquid must be replaced frequently.

Of course, if you take a longer time to drain and dry by slowing down the transport speed of the basket, etc., the amount of moisture carried into the rust prevention tank can be suppressed to some extent, but if the bearing is exposed to air for a long time after the oil film has been removed and the bearing has been washed in hot water, (Particularly unfavorable in terms of rust prevention, and also problematic in terms of work efficiency.

In addition, in the past, baskets and bearings whose temperature rose due to hot water washing were immediately immersed in the rust preventive solution, which caused problems such as the rust preventive solution being heated and evaporating, resulting in performance deterioration.

The present invention has been developed in view of these circumstances, and eliminates the need to take a particularly long time to drain the water and eliminates moisture from being brought into the rust prevention tank after washing with hot water. This makes it possible to maintain performance, reduce the frequency of replacing the rust preventive solution, and perform appropriate temporary rust preventive treatment on the bearing after washing with hot water.

(Means for Solving the Problem) In order to achieve the above object, in the present invention, a chemical washing tank (3), (4), a hot water washing tank (5) and a rust prevention tank (6) are installed in parallel. The cleaning apparatus employs the following configuration for bearings, which are arranged in sequence and are equipped with a plurality of baskets (2) containing bearings (1) or a batch-type conveying means for sequentially transporting the bearings (1) into these various baskets at regular intervals.

In other words, the bearing of the present invention is used in the cleaning device in the hot water bath (
5), a maintenance means for lifting and maintaining the bearing (1) which has been subjected to the hot water washing treatment on the hot water surface together with the basket (2) for a time shorter than the predetermined period; an air jet nozzle (26) for draining and drying which blows air to the bearing (1); and an air jet nozzle (26) at the upper part of the hot water washing tank.
The lid body (27) opens and closes the hot water bath in conjunction with the operation of the hot water bath.

(Function) According to the configuration of the present invention, the basket carried into the hot water washing tank is subjected to the hot water washing process for a time shorter than a certain process cycle, and then is lifted above the liquid surface and transported after the process cycle has expired. It will be on standby until it starts. During this time, the hot water washing tank is closed by the lid, and dry air is blown from the air jet nozzle toward the bearing held in the basket to blow off moisture adhering to the bearing. At the same time, the bearings, whose temperature had risen due to hot water washing, are cooled by the jetted air. .

Thereafter, the drained and dried basket is transported to a rust prevention tank and undergoes temporary rust prevention treatment.

(Embodiment) FIG. 1 shows an entire longitudinal sectional front view of a cleaning device for a bearing according to an embodiment of the present invention, and FIG. 2 shows a longitudinal sectional side view of a part thereof.

A plurality of bearings 1, which are objects to be cleaned, are housed in a basket-shaped basket 2 made of a corrosion-resistant metal material. Then, the grease is sequentially transported to a rust prevention tank 6, where the deteriorated grease is cleaned.

The above-mentioned various types 3.4.5.6 are arranged in parallel in the basket transport direction, the first and second chemical washing tanks 3.4 contain a chemical solution 7 such as alkaline solution, and the hot water washing tank 5 contains hot water 8. However, the rust prevention tank 6 also stores a rust prevention liquid 9 such as kerosene or light oil at a predetermined level.

Further, a transport table 10 is provided at the upper end where the cleaning process is started to lift the basket 2 from the floor to the transport level, and a transport table 11 for taking out is provided at the lower end where the cleaning process ends. Then, both conveyance tables 10.
A metering feed device 12 is equipped to horizontally feed a plurality of baskets 2 at a constant pitch in a batch manner over a period of 11, and each of the above-mentioned 3.4.5.6 is equipped with a lift that lifts and lowers the baskets 2 that have been brought in. A device 13 is provided.

The quantitative feeding device 12 has a pair of front and rear support frames 14.
A guide rail 15 is supported horizontally through the guide rail 15, a long carrier 17 is guided and supported by the guide rail 15 via rollers 16, and can run over various distances. An air cylinder 18 that reciprocates back and forth with a constant stroke, five sets of bushing arms 19 hanging downward from the carrier 17, and a bushing arm 19 at the lower end of each bushing arm 19 that is swingable only forward from a vertical position and clockwise in FIG. The pusher 19a is pivotally connected to the pusher 19a (which can swing freely only in the direction of the push button). Further, the lift device 13 includes a free roller 2 that supports the basket 2 in a removable manner at the lower part of the receiving frame 20 located in the tank.
Two groups are arranged side by side.

Therefore, the receiving frame 20 of each lift device 13 is
．． 5. By moving the carrier 17 forward while raised to the upper end opening level of 6, the basket 2 is pushed from behind by each pusher 19a, and the basket 2 located on the conveyance table 10 is moved to the first chemical washing tank 3. To the top of receiving frame 20,
The basket 2 on the first chemical washing tank 3 is placed on the receiving frame 20 of the second chemical washing tank 4, and the basket 2 on the second chemical washing tank 4 is placed on the receiving frame 20 of the hot water washing tank 5. The basket 2 on the rust prevention tank 6 is placed on the receiving frame 20 of the rust prevention tank 6, and the basket 2 on the rust prevention tank 6 is
are adapted to be transferred onto a conveyance table Il. Then, as the carrier 17 returns to the rear, each pusher 19a swings backward due to contact with the succeeding basket 2, passes through each basket 2, returns to its rear side, and prepares for the next conveyance. Next, the lift device 13 is lowered, and the basket 2 placed on the receiving frame 20 is immersed in the treatment liquid, and a predetermined treatment is performed.

Each type of processing is set in advance for a certain period of time (for example, 10 minutes), and the transport operation is performed every time this certain period of time elapses, and the basket 2 is sequentially processed by each type and transferred to the transport table 1! It is sent upward.

Furthermore, a lid 27 is provided at the top of the hot water washing tank 5 to open and close the hot water washing tank 5 in conjunction with the operation of the air jet nozzle 26.

Next, various processing operations will be explained.

(2) In the first chemical washing tank 3, the basket 2 is repeatedly immersed in the chemical liquid 7 and lifted up to the liquid surface to wash off the grease.

Note that this chemical solution 7 is heated by the heater 23 to a temperature of, for example, 50 to
It is heated to 60°C.

(2) In the second chemical washing tank 4, the basket 2 is moved up and down in the chemical solution 7 to wash away grease from small areas. Similarly, this chemical solution 7 is also heated to 50 to 60
It is heated to 0°C.

- In the hot water washing tank 5, the basket 2 is repeatedly immersed in the hot water 8 heated by the heater 24 and thrown onto the hot water surface for a slightly shorter time than the above-mentioned fixed time (for example, 7 minutes). , the remaining processing time (for example, 3 minutes) is lifted and held above the hot water surface. Positioning in this case is detected by maintaining the support member 20a of the receiving frame 20 between the pair of upper and lower optical sensors 25, as shown in FIG.

Additionally, a pair of front and rear air jet nozzles 26 are installed horizontally at the top of the hot water washing tank 5, and dry air is ejected from a large number of small holes (not shown) formed along the nozzles 26 to the basket above the scene. 2 and the bearing 1 housed therein, the water is sprayed diagonally downward, and the water adhering to them is blown off. In this case, basket 2 and bearing l are 1i
Since the temperature has increased due to immersion in h8, water droplets are removed and air is blown to dry the basket in a short time, and both the basket 2 and the bearing 1 are cooled.

In addition, the opening of the hot water washing tank 5 has a lid 2 that can be opened and closed by swinging.
7 is provided, and the lid 27 is closed during processing to prevent water droplets from scattering outside the tank. In addition, an exhaust pipe 28 is provided at the upper part of the hot water washing tank 5 so that the tank 127 is not lifted up due to the increase in the internal pressure of the tank due to the supply of air.

Note that the drying time and amount of air by this air blowing are adjusted as appropriate depending on the size and type of the bearing l.

(2) In the anti-rust tank 6, the basket 2 is once immersed in the anti-rust liquid 9 and then held on standby until it is lifted out and filled with grease.

In the above-mentioned embodiment, a bush-type quantitative conveyance device [12] and a lift device [13 for each type] are used as a conveyance means for carrying the baskets 2 in and out of each type at regular intervals for batch processing. However, there is a method of transporting the baskets 2, such as by suspending and supporting a receiving frame 20 that can be driven up and down on a circulating chain conveyor that travels above each type in fixed quantities at regular intervals, and carrying the baskets 2 into each type one by one. can be selected arbitrarily. In addition, air jet nozzle 2 for draining and drying
The form of the basket 6 can also be arbitrarily changed, such as by enclosing the basket 2 from the entire circumference.

(Effect of the invention) The bearing cleaning device of the present invention has the following effects.

(1) The bearing and basket can be reliably drained and dried while maintaining a constant transport cycle before being transported to the rust prevention tank, which prevents the rust prevention solution from deteriorating in a short period of time due to water brought in as in the past. It can be prevented.

Therefore, the frequency of replacing the rust preventive liquid is reduced, and the efficiency of treatment work can be improved.

(2) After washing with hot water, the basket and bearings are cooled with draining and drying air, making it possible to prevent the rust preventive liquid from heating up and evaporating, as well as from deteriorating its performance.

(3) When dry air is blown from the air jet nozzle toward the bearing, the lid at the top of the hot water washing tank is closed, so the hot water does not scatter to the outside of the tank.
Safety is also sufficiently ensured.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a longitudinal sectional front view of a bearing according to the invention and a washing device, and FIG. 2 is a longitudinal sectional side view of a washing tank portion. 1... Bearing, 2... Basket, 3.4... Chemical washing tank, 5... Hot water washing tank, 6... Rust prevention tank, 26... Air jet nozzle, 27... Lid body.

Claims (1)

[Claims] A chemical washing tank (3), (4), a hot water washing tank (5), and a rust prevention tank (6) are arranged in sequence, and a plurality of baskets (1) containing bearings (1) are arranged in parallel. 2) is a bearing cleaning device equipped with a batch-type conveying means for sequentially carrying the bearings into each of these tanks at a fixed cycle, wherein the bearing (1) is subjected to a hot water washing process in the hot water washing tank (5) for a time shorter than the fixed cycle. and a bearing (1) housed in the lifted basket (2).
) Air jet nozzle for draining and drying (2)
6), and the air jet nozzle (26) at the upper part of the hot water washing tank.
A bearing cleaning device comprising: a lid body (27) that opens and closes a hot water washing tank in conjunction with the operation of the bearing cleaning device.