JPH04173453A - Car washing device for construction machine - Google Patents

Abstract

PURPOSE:To facilitate the recovery/removal of washed-off sediment by precipitating/separating sediment in wash water after washing a crawler type construction machine, inside a precipitator, then collecting the sediment along the inclination of an oblique line, and discharging it into a sediment pit by a carry-out conveyor. CONSTITUTION:Below a latticed car washing base 1, there is provided a sediment precipitator 2 with the base 2a thereof inclined to one side, and a sediment carry-out conveyor 3 is disposed along this base 2a. The discharge end 3a of this conveyor 3 is positioned on a sediment pit 4 adjacent to one side of the precipitator 2. A wash water reservoir 6 is provided in line on the other side of the precipitator 2 through a partition wall 5, and the height (h) of this partition wall 5 is made lower than the depth H of the reservoir 6. The upper end of the partition wall 5 is formed into an overflow weir 5a, and when water in the precipitator 2 becomes full, supernatant water can overflow into the reservoir 6. A filtering screen 7 is provided on the overflow weir 5a provided at the upper end of the partition wall 5, and water flowing into the reservoir 6 to stay therein after being filtered by the screen 7 is pumped by a pump so as to be circulated and reused as car washing water.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a cleaning device for heavily soiled tracked vehicles used for excavating and removing earth, such as construction machines, especially shovels and bulldozers. .

[Prior Art] Various car washing devices have been known in the past, and they can be roughly divided into those that wash by spraying pressure water, and those that wash mechanically using a brush or the like in addition to washing water. There is.

Items belonging to the former category include those in which the injection direction of the injection nozzle is variable and those in which the injection nozzle can be raised and lowered (for example, Japanese Patent Laid-Open No. 61
-18174-7 and 181748 Publications) or in which the bogie is moved in the longitudinal direction of the vehicle while turning the nozzle (for example, see Japanese Patent Laid-Open No. 62-71747 and Japanese Patent Publication No. 11-501654) are known. be.

Those belonging to the latter category are not related to the present invention, so illustrations thereof will be omitted.

By the way, unlike general vehicles, construction machinery has a complicated shape, so it is difficult to clean it mechanically with brushes, etc., and the only way to clean it is by spraying pressure water. For heavily soiled tracked vehicles that are used for earth excavation and earth removal work such as bulldozers, it is not enough to simply clean the outer surface of the vehicle body; The attached soil must be washed off, and a large amount of pressurized water must be used, which poses a problem in that it is difficult to obtain washing water and treat wastewater.

In order to solve this problem, the applicant has devised a method of circulating and reusing car wash water by installing multiple pits in series, and is currently applying for a separate patent. A new problem arose in that it contained soil and sand, which settled and accumulated in the pit, making it difficult to remove by dredging.

[Problem M to be solved by this invention] The object of this invention is to solve the above-mentioned problems.By circulating the washing water, the amount of make-up water can be reduced while using a large amount of washing water. At the same time, it also reduces the amount of wastewater discharged outside the site.
The object of the present invention is to provide a car washing device for construction machinery that saves the amount of water used and facilitates the collection and removal of washed-off earth and sand.

[Means for Solving the Problems] The present invention aims to provide means for solving the problems described above, and the invention of claim 1) includes a base 2a below the lattice-shaped car wash table 1.
An earth and sand sedimentation tank 2 is provided which is inclined to one side and both left and right sides 2b are inclined towards the bottom side 2a, and an earth and sand transport conveyor 3 is arranged along the bottom side 2a of the sedimentation tank 2, and a discharge end 3a of the conveyor 3 is provided. The sediment pit 4 adjacent to one side of the sedimentation tank 2
At the same time, a washing water storage tank 6 is connected to the other side of the sedimentation tank 2 via a partition wall 5, and the upper part of the partition wall 5 is communicated to prevent water from overflowing from the sedimentation tank 2 to the storage tank 6. possible,
The gist of this invention is a car washing device for construction machinery, characterized in that water stagnant in a storage tank 6 is pumped up and recycled for circulation and reuse as car washing water.

The invention of claim 2) provides an overflow weir 5a at the upper end of the partition wall 5.
The invention according to claim 3) is characterized in that a filtering agent screen 7 is disposed on the top, and the invention according to claim 4) is characterized in that the water pump is a submersible pump 8 and is installed at the bottom of the storage tank 6. The invention according to claim 5 is characterized in that a level switch 9 is installed near the bottom of the storage tank 6, and the pump 8 is stopped when a drop in the water level is detected. conveyor 3, horizontal bar 3b
It is characterized by having an attached belt conveyor.

[Function] When a tracked construction machine such as a shovel or a bulldozer enters the grid-shaped car washing direction 1 and sprays pressure water to wash the car, the washing water containing earth and sand after washing flows down into the settling tank 2.

Sediment with high specific gravity settles in the sedimentation tank 2, and the left and right hypotenuses 2b
, 2b are sequentially collected at the bottom 2a along the slopes, and are discharged into the sediment pit 4 adjacent to one side of the sedimentation tank 2 by the conveyor 3.

The supernatant water of the settling tank 2 flows into the adjacent storage tank 6 over the overflow weir 5a at the upper end of the partition wall 5.

The water that flows into the storage tank 6 and is stored is pumped up by a pump and is circulated and reused as water for car washing.

When flowing from the upstream pit to the downstream pit over the overflow weir 5a at the upper end of the partition wall 5, it is filtered by the filter agent screen 7 disposed on the overflow weir 5a, and floating impurities are removed. Ru.

The pump for pumping up water can be of a ground-mounted type, but if it is installed as a submersible pump 8 at the bottom of the storage tank 6, it will be pumped out from the bottom of the water instead of being sucked in from the ground, so fine mud particles, etc. Cleaning water can be pumped up smoothly even if foreign matter remains.

Further, a level switch 9 similarly installed near the bottom of the storage tank 6 can detect the water level in the storage tank 6, and can stop the pump 6 when the water level falls below a certain value.

Although the structure of the earth and sand carrying conveyor 3 is arbitrary, if it is a belt conveyor with a horizontal bar 3b, even highly fluid earth and sand can be easily carried out and removed.

[Example] In the figure, reference numeral 1 denotes a lattice-shaped car wash platform, and the load support portion that supports wheels or endless tracks is a vertical and horizontal double lattice 1a.

Below the lattice-shaped car wash table 1, the bottom side 2a is inclined to one side,
Further, a sediment settling tank 2 is provided with both left and right sides 2b inclined toward the bottom side 2a.

Reference numeral 3 denotes an earth and sand conveyor disposed along the bottom side 2a of the sedimentation tank 2, and the discharge end 3a of the conveyor 3 is located above the earth and sand pit 4 adjacent to one side of the sedimentation tank 2. .

A cleaning water storage tank 6 is connected to the other side of the settling tank 2 via a partition wall 5 . The height h of the partition wall 5 is lower than the depth H of the storage tank 6, and the upper end of the partition wall 5 is connected to the overflow weir 5.
a, and when the sedimentation tank 2 becomes full of water, the supernatant water can overflow into the storage tank 6.

A filter agent screen 7 is provided on the overflow weir 5a at the upper end of the partition wall 5. Although the material and shape of the filter agent screen 7 are arbitrary, it is preferable to use an iron grid-like bar screen or a wire mesh-like net screen so that it can be cleaned with pressure water.

The washing water flowing into the sedimentation tank 2 contains a large amount of washed-off earth and sand, but since these earth and sand have a high specific gravity, they settle in the sedimentation tank 2 and are successively deposited on the bottom side 2a along the slopes of the left and right hypotenuses 2b and 2b. are collected and discharged into a soil pit 4 adjacent to one side of the sedimentation tank 2 by a carry-out conveyor 3.

The earth and sand carrying-out conveyor 3 is a belt conveyor with a horizontal bar 3b, so that earth and sand that easily flow down can be easily carried away.

In this way, the sediment is precipitated in the sedimentation tank 2 and discharged into the sediment pit 4 by the carry-out conveyor 3, and the supernatant water overflows into the storage tank 6, but when it overflows, it is filtered by the screen 7. Therefore, the water that flows into the storage tank 6 and remains there is not completely settled, and although fine mud particles that could not be filtered by the screen 7 remain, the water is still sufficiently usable for cleaning heavily soiled construction machinery. The water will be of the highest possible quality.

Therefore, this water can be pumped up and circulated and reused as car wash water.

Although a ground-mounted pump may be used as the pump for pumping up water, in this embodiment, the submersible pump 8 is used in the storage tank 6.
A level switch 9, also installed near the bottom, detects the water level in the storage tank 6 and stops the pump 8 when the water level drops below a certain value. .

Washing water pumped up by the pump 6 is supplied via piping 10 to pressure water injection nozzles installed on the left, right, and lower portions of the car wash platform 1 .

[Effect] According to the present invention, the sediment settling tank 2 is provided below the lattice-shaped car wash platform 1, and the bottom side 2a is inclined to one side, and both left and right sides 2b are inclined toward the bottom side 2a, and the bottom side 2a of the settling tank 2 is An earth and sand carrying conveyor 3 is disposed along the sediment tank 2, with the discharge end 3a of the conveyor 3 facing above the earth and sand pit 4 adjacent to one side of the sedimentation tank 2, and a partition wall 5 on the other side of the sedimentation tank 2. A washing water storage tank 6 is connected through the partition wall 5, and the upper part of the partition wall 5 is communicated to allow overflow from the sedimentation tank 2 to the storage tank 6, and the water stagnant in the storage tank 6 is pumped up to wash the car. By circulating and reusing the water, circulating water can be used for washing off soil and sand, which requires large amounts of washing water.
It is sufficient to use fresh make-up water only for finishing.
It is possible to reduce the amount of make-up water while using a large amount of washing water, and at the same time reduce the amount of wastewater discharged outside the site, saving the amount of water used. Since it is precipitated and discharged to the earth and sand pit 4 by the carry-out conveyor 3, it is easy to collect and remove it, and since only one storage 1'lt6 is sufficient, the installation area can be reduced.

Further, according to the invention of claim 2), by disposing the filtering screen 7 on the overflow weir 5a at the upper end of the partition wall 5, impurities in the circulating water flowing from the settling tank 2 to the storage tank 6 are removed. According to the invention of claim 3, by using the submersible pump 8 as the lifting pump, it is possible to save ground space and to prevent foreign substances such as fine mud particles from remaining in the washing water. Furthermore, according to the invention of claim 4, the level switch 9 detects the water level in the storage tank 6, and when the water level decreases, the pump 8 is turned on. The vehicle can be stopped and the danger of dry running can be prevented, as claimed in claim 5.
According to the invention, since the carrying-out conveyor 3 is a belt conveyor with a horizontal bar 3a, highly fluid earth and sand can be easily carried out and removed.

[Brief explanation of drawings]

FIG. 1 is a plan view of a car wash apparatus according to the present invention, FIG. 2 is a side sectional view, and FIG. 3 is a sectional view taken along line 4-N in FIG. 1: Grid-shaped car wash platform 2: Sediment settling tank 2a: Bottom side of the settling tank 2b: Diagonal side 3: Sediment carry-out conveyor 3a: Discharge end 3b: Lli crosspiece 4: Sediment pit 5: Partition wall 5a: Overflow weir 6: Storage Tank 7: Screen 8: Submersible pump 9 Level switch 10: Piping patent applicant Shin Nippon Machinery Co., Ltd. Komatsu Ltd.

Claims (1)

[Scope of Claims] 1) Below the lattice-shaped car wash platform (1), there is provided a sediment settling tank (2) with the bottom (2a) inclined to one side and both left and right sides (2b) inclined toward the bottom (2a). a sediment transport conveyor (3) is provided along the bottom (2a) of the sedimentation tank (2);
The discharge end (3a) of the conveyor (3) is connected to the settling tank (2).
A washing water storage tank (6) is provided on one side of the sedimentation tank (2), facing onto the adjacent earth and sand pit (4), and connected to the other side of the settling tank (2) via a partition wall (5). The upper part of (5) is connected to allow overflow from the settling tank (2) to the storage tank (6), and the water stagnant in the storage tank (6) is pumped up and circulated and reused as car wash water. A car wash device for construction machinery that is characterized by: 2) Claim 1) characterized in that a filtration screen (7) is disposed on the overflow weir (5a) at the upper end of the partition wall (5).
The car wash equipment described. 3) Use the water pump as a submersible pump (8) to pump the water into the storage tank (
6) The car wash device according to claim 1) or 2), wherein the car wash device is installed at the bottom of the car wash device. 4) A level switch (9) is installed near the bottom of the storage tank (6), and the pump (8) is stopped when a drop in the water level of the storage tank (6) is detected. The car washing device according to claim 3). 5) Claims 1 to 4) characterized in that the earth and sand carrying conveyor (3) is a belt conveyor with a horizontal bar (3a).
The car wash equipment described.