JP2023149125A - Construction machine underbody washing device - Google Patents

Abstract

To provide a construction machine washing device capable of securing a wide work space around a construction machine to be washed, with a small installation space of a floor face of a car washing station, and preventing touch of washing fluid, washed surplus soil or the like to a component of the device.SOLUTION: A construction machine washing device 1 comprises: a washing unit 20 suspended from a guide rail 12 is caused to travel along the guide rail 12 in a cross direction for washing an underbody part of the construction machine from both sides, the guide rail 12 being arranged above a floor face 3a of a car washing station. An installation space of the washing device on a floor face of the car washing station can be reduced. Since an operator can pass under the guide rail 12, work such as manual car washing work, can be performed by the operator without being disturbed by components of the underbody washing device 1. Washing water does not contact the guide rail 12, the washing unit 20 and the like, so that, maintenance properties of the underbody washing device 1 can be also enhanced.SELECTED DRAWING: Figure 1

Description

The present invention relates to a construction machine cleaning device, and more particularly to a construction machine undercarriage cleaning device that cleans a traveling device of a construction machine, such as a crawler of a crawler-type traveling crane.

A track-type vehicle cleaning device described in Patent Document 1 is known as an underbody cleaning device for construction machinery. This cleaning device has a nozzle for spraying cleaning liquid that is mounted in a movable state on a trolley that runs along guide rails located on both sides of a tracked vehicle that has entered a car wash. During the cleaning process, a nozzle is moved up and down while the truck is running to spray cleaning fluid onto the tracked vehicle to remove dirt.

Patent No. 4621556

In a conventional construction machine undercarriage cleaning device, as described in Patent Document 1, the cleaning device is installed on the floor of a car wash. That is, a rail that defines the traveling route of the traveling unit on which the cleaning liquid spray nozzle is mounted is directly installed on the floor surface. A portion of the floor space secured for the car wash area is occupied as installation space for these cleaning equipment components, so the space that must be secured for the car wash area increases accordingly, making it difficult to secure enough space. If this cannot be secured, the work space at the car wash will become narrower.

In addition, in cleaning work for the undercarriage of a crawler or the like of a construction machine, a manual car wash process may be performed as a final wash after a cleaning process using a cleaning device. In manual car washing, the person sprays cleaning water onto the vehicle while walking with a hose in hand. The components of the car wash equipment (rails, traveling units that run on the rails, etc.) are placed on both sides of the vehicle being brought into the car wash, so the car wash work can be carried out in the narrow space between these parts. It is necessary to do this, and the workability is poor. Furthermore, when moving around the vehicle to be cleaned during work, the user may trip over components of the cleaning device installed on the floor.

Furthermore, when washing away the remaining soil on the floor of a car wash after the cleaning of crawlers, etc. is completed, foreign matter such as residual soil gets caught on the rails and other components of the cleaning equipment that are placed flat on the floor. In some cases, it may be difficult to wash away such substances.

In addition, with existing cleaning equipment that is placed flat on the floor of a car wash, cleaning water splashes on moving parts such as the rails and chains of the traveling mechanism, causing the grease applied to these parts to be washed away by the cleaning water. It will be done. Therefore, there are problems such as increased frequency of maintenance such as reapplication of grease.

In view of these points, an object of the present invention is to reduce the installation space, secure a large working space around the construction machine to be cleaned, and prevent cleaning liquid, washed-off soil, etc. from coming into contact with equipment components. An object of the present invention is to provide an undercarriage cleaning device for construction machinery.

The construction machine undercarriage cleaning device of the present invention includes:
On the floor of the car wash, where construction machinery to be washed can be brought in and taken out from the front and rear directions, left and right columns erected on both sides in the width direction,
left and right guide rails supported by each of the pillars and extending in the front-rear direction at a predetermined height from the floor surface;
left and right cleaning units suspended from each of the guide rails in a state where they can run along the guide rails;
left and right cleaning liquid spray nozzles that are mounted on each of the cleaning units in a vertically movable state and spray cleaning liquid toward the inside in the width direction;
a traveling drive mechanism mounted on the guide rail for causing each of the cleaning units to travel along the guide rail;
an elevating drive mechanism mounted on each of the cleaning units for elevating and lowering each of the cleaning liquid injection nozzles;
a jetting direction switching mechanism mounted on each of the cleaning units for rotating each of the cleaning liquid jetting nozzles and switching the jetting direction;
It is equipped with
The height dimension from the floor surface to the guide rail is set so that a person can pass under the guide rail.

In the construction machine undercarriage cleaning device of the present invention, a guide rail for moving the cleaning unit is disposed above the floor surface of a car wash, and the cleaning unit is attached to the guide rail in a suspended state. Since the components other than the pillars of the washing device are arranged above the floor of the car wash, the washing device occupies less space on the floor of the car wash. Further, since the worker can pass under the components of the car wash device, he can perform manual car wash operations without being obstructed by the components of the car wash device, improving work efficiency. Furthermore, parts such as the guide rail and the cleaning unit of the cleaning device are not placed on the floor surface onto which the cleaning liquid flows, but are placed above the floor surface. Cleaning liquid is not directly sprayed onto these parts, and foreign matter such as mud that has been washed away does not clog them. Therefore, the maintainability of the cleaning device is also improved.

(A) is a plan view showing an example of an underbody cleaning device for construction machinery to which the present invention is applied, and (B) is a left side view thereof. (A) is a plan view showing the left side cleaning section of the construction machine undercarriage cleaning device of FIG. 1, (B) is its side view, and (c) is its end view. (A) is an explanatory diagram showing the movement of the cleaning liquid spray nozzle, and (B) is an explanatory diagram showing the flow of the cleaning liquid.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of an underbody cleaning device for construction machinery to which the present invention is applied will be described below with reference to the drawings. The embodiments described below relate to an underbody cleaning device for cleaning the underbody portion of a crawler-type traveling device of a construction machine, but the present invention is not limited to the embodiments, and the present invention is not limited to the embodiments. It can also be applied to a cleaning device for the undercarriage of a construction machine equipped with a traveling device other than a traveling device.

As shown in FIG. 1, the construction machine underbody cleaning device 1 of this example (hereinafter simply referred to as "underbody cleaning device 1") is capable of carrying in and out of the construction machine 2 to be cleaned from the front and rear directions Y. It is installed at car wash lot 3. The cleaning device 1 includes a left side cleaning section 4L and a right side cleaning section 4R, which have a symmetrical structure and are installed on both sides in the width direction X on the floor surface 3a of the car wash 3. The left side cleaning section 4L mainly cleans the left side surface of the underbody of the construction machine 2, and the right side cleaning section 4R mainly cleans the right side surface of the underbody of the construction machine 2. Further, the cleaning device 1 is provided with a circulating type cleaning water supply/recovery section 5 that supplies cleaning liquid, in this example, cleaning water, to the left side cleaning section 4L and the right side cleaning section 4R, respectively. Further, the cleaning device 1 includes a control panel 6 that controls the driving of each part. Note that the left side cleaning section 4L and the right side cleaning section 4R have a symmetrical structure, so the structure of the left side cleaning section 4L will be explained, and the explanation of the right side cleaning section 4R will be omitted.

Explaining with reference to FIG. 2, the left side washing section 4L includes front and rear support frames 11F and 11R vertically erected at regular intervals in the front-rear direction Y on the floor 3a of the car wash 3. A guide rail 12 extending horizontally in the front-rear direction Y is spanned over the upper end portions of these support frames 11F and 11R. The guide rail 12 is made of, for example, H-shaped steel, and is located at a height that allows the worker P to pass under it, for example, at a height that creates a gap H of 2 m or more between it and the floor surface 3a of the car wash 3. It is installed in the same position. A cleaning unit 20 is suspended from the guide rail 12 so as to be movable in the front-rear direction Y along the guide rail 12 . Further, a traveling drive mechanism 30 for causing the cleaning unit 20 to travel in the front-back direction is attached to the guide rail 12.

The traveling drive mechanism 30 of the cleaning unit 20 includes a driving sprocket 31 attached to the rear end of the guide rail 12, a traveling motor 32 that rotationally drives the driving sprocket 31, and a driven sprocket attached to the front end of the guide rail 12. It is provided with a sprocket 33, a driving chain 34 that is stretched between these sprockets 31, 33, and a guide roller. The cleaning unit 20 is connected to the drive chain 34.

The cleaning unit 20 includes a traveling platform 21 to which a driving chain 34 of a traveling drive mechanism 30 is connected, a lifting guide rail 22 extending vertically downward from the lower surface of the traveling platform 21, and a lifting guide rail 22. It is provided with an elevating table 23 attached to the elevating table 23 so as to be movable up and down, and an elevating drive mechanism 24 for elevating and lowering the elevating table 23. A cleaning water spray nozzle 26 and a spray direction switching mechanism 27 are mounted on the lifting platform 23 . Furthermore, a flexible hose 28 for supplying cleaning water is connected to the cleaning water injection nozzle 26 . The hose 28 is held with sufficient slack (excess length) at multiple locations by a hose support 29 that is movable along the guide rail 12, and is held in a state with sufficient slack (excess length) at multiple locations, so that the hose 28 can be easily moved when the traveling platform 21 runs and when the lifting platform 23 is raised and lowered. It is possible to follow.

The elevating drive mechanism 24 of the cleaning unit 20 includes sprockets 24a and 24b attached to the upper and lower ends of the elevating guide rail 22, a driving chain 24c vertically strung between these sprockets, and a drive chain 24c mounted on the traveling platform 21. It is equipped with a lifting motor 24d. The elevating table 23 is connected to a drive chain 24c, and is moved up and down along the elevating guide rail 22 by an elevating motor 24d. Note that, as shown in FIG. 3(A), the cleaning water jetting nozzle 26 of this example can switch the jetting direction of the cleaning water by a jetting direction switching mechanism (rotation drive mechanism) 27.

Next, as shown in FIG. 1, the wash water supply/recovery section 5 includes a mud basin 51, a primary sedimentation tank 52, and a secondary A sedimentation tank 53 is provided. Submersible pumps 54L and 54R are arranged in the secondary sedimentation tank 53. The cleaning water stored in the secondary sedimentation tank 53 is supplied from the submersible pumps 54L and 54R to the left and right piping passages 55L and 55R, and through the hoses 28 of the left side cleaning section 4L and right side cleaning section 4R, respectively, for left and right cleaning. The water is supplied to each of the water injection nozzles 26.

As shown by the bold line arrows in FIG. 3(B), the wash water sprayed from the left and right wash water injection nozzles 26 toward the crawlers 2L and 2R of the construction machine 2 to be washed is directed to the floor surface 3a of the car wash 3. flowing down. The floor surface 3a has a water slope toward the front, and the washing water that has fallen onto the floor surface 3a flows forward along the floor surface 3a together with dirt such as mud, and drains (not shown) formed at a predetermined location. From the mouth, it flows into the mud storage tank 51, and foreign matter such as mud settles therein. The supernatant water of the mud storage tank 51 is collected from the mud storage tank 51 to the secondary sedimentation tank 53 via the primary sedimentation tank 52. The cleaning water collected in the secondary sedimentation tank 53 is again supplied to the left cleaning section 4L and the right cleaning section 4R via the submersible pumps 54L, 54R and piping lines 55L, 55R.

(Effects of undercarriage cleaning equipment)
In the undercarriage cleaning device 1 of this example, four support frames 11F and 11R are erected from the floor 3a of the car wash 3, and cleaning water injection nozzles are ejected from the left and right guide rails 12 horizontally supported upward by these support frames 11F and 11R. The cleaning unit 20 on which the cleaning unit 26 is mounted is suspended, and there are no components of the cleaning device that are placed flat on the floor 3a. Moreover, the height position of the guide rail 12 from the floor surface 3a is set so that the worker P can pass under it with plenty of time.

Therefore, the space that the undercarriage cleaning device 1 occupies on the floor 3a of the car wash 3 can be reduced. In addition, as shown in FIG. 2(B), the worker P can pass under the components of the underbody cleaning device 1, and the cleaning unit 20 is waiting at the origin position on the front end side, so the underbody A worker can perform manual car washing work or the like without being obstructed by the components of the washing device 1. For example, when cleaning the crawlers 2L and 2R of the construction machine 2, the undercarriage cleaning device 1 performs automatic cleaning, and then a worker generally performs manual cleaning as a final cleaning. During manual cleaning work, if the guide rail 12, cleaning unit 20, etc., which are components of the undercarriage cleaning device 1, are placed on the sides of the crawlers 2L and 2R, they will get in the way and reduce the workability of manual cleaning. decreases. In the case of the undercarriage cleaning device 1 of this example, the sides of the crawlers 2L and 2R are in an open state through which the worker P can freely pass, so that the workability of manual cleaning is improved.

Further, the cleaning water injected from the cleaning water injection nozzle 26 to the crawlers 2L and 2R flows down onto the floor surface 3a together with foreign matter such as mud that has been washed off. Since the guide rail 12 of the undercarriage cleaning device 1, the cleaning unit 20, and other component parts are not arranged on the floor surface 3a, the dirty cleaning water that has flowed down from the crawlers 2L and 2R flows into these parts. , no harmful effects such as clogging inside these parts occur. In addition, the grease applied to the driving parts of these parts will not be washed away by the cleaning water. Therefore, the maintainability of the undercarriage cleaning device 1 is also improved.

1 Underbody cleaning device for construction machinery (underbody cleaning device)
2 Construction machinery 2L, 2R Crawler 3 Car wash 3a Floor surface 4L Left side washing section 4R Right side washing section 5 Washing water supply/recovery section 6 Control panel 11F, 11R Support frame 12 Guide rail 20 Washing unit 21 Travel platform 22 Elevating guide rail 23 Elevating table 24 Elevating drive mechanism 24a, 24b Sprocket 24c Drive chain 24d Elevating motor 26 Cleaning water injection nozzle 27 Injection direction switching mechanism (rotation drive mechanism)
28 Hose 29 Hose support 30 Traveling drive mechanism 31 Drive side sprocket 32 Traveling motor 33 Driven side sprocket 34 Drive chain 51 Mud tank 52 Primary sedimentation tank 53 Secondary sedimentation tank 54L, 54R Submersible pump 55L, 55R Piping line H Gap P Worker Y Front-rear direction X Width direction

Claims (1)

On the floor of the car wash, where construction machinery to be washed can be brought in and taken out from the front and rear directions, left and right columns erected on both sides in the width direction,
left and right guide rails supported by each of the pillars and extending in the front-rear direction at a predetermined height from the floor surface;
left and right cleaning units suspended from each of the guide rails in a state where they can run along the guide rails;
left and right cleaning liquid spray nozzles that are mounted on each of the cleaning units in a vertically movable state and spray cleaning liquid toward the inside in the width direction;
a traveling drive mechanism mounted on the guide rail for causing each of the cleaning units to travel along the guide rail;
an elevating drive mechanism mounted on each of the cleaning units for elevating and lowering each of the cleaning liquid injection nozzles;
a rotation drive mechanism mounted on each of the cleaning units for rotating each of the cleaning liquid injection nozzles and switching the injection direction;
It is equipped with
An undercarriage cleaning device for construction machinery, wherein a height dimension from the floor surface to the guide rail is set so that a person can pass under the guide rail.