JPS6137384Y2 - - Google Patents

Description

[Detailed explanation of the invention] This invention is equipped with a trackless roof car that runs on the roof of a building such as a building, and an elevating body consisting of an automatic cleaning unit or a work floor that is suspended by the roof car. This invention relates to improvements to building cleaning machines for cleaning and maintaining buildings.

First, a conventional building cleaning machine will be explained with reference to FIGS. 1 and 2. In Figures 1 and 2, 1 is the rooftop of a building such as a building, 2 is a parapet provided along the outer edge of the rooftop 1, 3 is the outer wall surface of the building, and 3a is the vertical direction of the outer wall surface 3. 4 is a roof car of a building cleaning machine; 5 is an elevating body consisting of an automatic cleaning unit or a work floor suspended from the roof car 4 with a wire rope 6; 5a is a guide wheel attached to the elevating body 4; It is. Also,
7 is a drive wheel for traveling driven by the prime mover 8; 9 is a steering wheel; 10 is a steering handle; 11
is a retainer for keeping the handle 10 in a straight state; 12;
a, 12b are front and rear guide wheels rolling on the inner wall surface of the parapet 2; 13 is the main body 4a of the roof car 4;
14 is an arm for suspending the elevating body 5, and 15 is a hoisting device for the wire rope 6.

With the building cleaning machine configured as described above,
To clean and maintain the exterior of the building, the roof car 4 is operated using the steering handle 10 to bring the guide wheels 12a and 12b into contact with the inner wall surface of the parapet 2, and then the roof car 4 is steered so as to keep traveling straight. Fix the handle 10 with the fixing device 11, move the roof car 4 parallel to the parapet 2, stop it when it reaches the required row of windows, operate the hoist 15, and move the roof car 4 to the raised position. The body 5 is lowered via the wire rope 6, the guide wheels 5a are engaged with the guide grooves 3a of the building, and the elevating body 5 is lowered along the outer wall surface 3 of the building and then raised again for cleaning and maintenance work. I do.

However, in the conventional building cleaning machine, even if the steering handle 10 is fixed with the fixing device 11, the roof car 4 is not necessarily fixed due to mechanical rattling or the condition of the floor surface of the rooftop 1 on which the roof car runs. , because the guide wheels 12a and 12b do not travel parallel to the parapet 2, as shown in FIG. When the hoisting machine 15 is operated to lower the elevating body 5, the guide wheels 5a provided thereon
However, there is a drawback that the guide wheel 5a or the wall of the guide groove 3a may be damaged if the guide wheel 5a is not properly inserted into the guide groove 3a of the building.

This invention is an attempt to solve the above-mentioned drawbacks, and when the roof car is running and stopped at a desired row of windows, it is checked whether the roof car remains parallel to the roof parapet or not. A building cleaning system that prevents the elevating body from moving up and down without the roof car being parallel to the parapet by detecting it with a rolling element installed on the roof car and activating a detection means such as a limit switch. The purpose is to provide an opportunity.

An embodiment of this invention will be explained below with reference to FIGS. 3 to 5.

3 and 4, the same reference numerals as in FIGS. 1 and 2 indicate the same parts, and 16a and 16b are arm-operated limit switches, which are supported by front and rear supports fixed to the main body 4a of the roof car 4. Ingredients 13,
13 via brackets 18a and 18b. The above limit switches 16a, 16b
The front and rear guide wheels 12a, 12b are respectively equipped with rollers 17a, 17b arranged close to each other at the tips of the arms 19a, 19b.
When the limit switches 2b abut against the inner wall surface of the parapet 2, they abut against the inner wall surface of the parapet 2, and in this state, the arms 19a, 19b of the limit switches 16a, 16b are configured to have a constant operating angle. In addition, as shown in FIG.
The normally open contacts 20a and 20b of a and 16b, the contact 21 of the travel stop switch, and the elevation control circuit 22 are connected in series, and the indicator light 23 is provided in parallel with the contact 21 of the travel stop switch and the elevation control circuit 22. . In addition, in FIG. 5, 24 is a control power source.

In the building cleaning machine configured as described above, when the roof car 4 is operated to bring the guide wheels 12a, 12b into contact with the inner wall surface of the parapet 2, the rolling element 1 is simultaneously moved.
7a and 17b are also in contact with the inner wall surface of the parapet 2,
Normally open contacts 20 of limit switches 16a, 16b
a, 20b are closed, and the indicator light 23 is lit. Next, the operating handle 10 is fixed with a fixture 11, the roof car 4 is moved in parallel along the parapet 2, and the roof car 4 is stopped when it reaches a required window row. At this stop, the front and rear guide wheels 12
When both a and 12b are in contact with the inner wall surface of the parapet 2, the travel stop switch contact 21
By closing, the elevation control circuit 22 is energized, and the elevation operation of the elevation body 5 becomes possible. However, if for some reason at least one of the guide wheels 12a is separated from the inner wall surface of the parapet 2, as shown in FIG. Since the operating angle is out of the range, the contact 20a of the limit switch 16a opens and the indicator light 23
goes out, and the lift control circuit 22 is also not energized.

Therefore, when the parallelism between the roof car 4 and the inner wall surface of the parapet 2 is not maintained, the elevating body 5 is not lowered, and its guide wheels 5a and 5b collide with the upper part of the parapet 2, causing damage. The danger is gone. Further, by turning off the indicator light 23, the operator can know that at least one of the guide wheels 12a, 12b is away from the inner wall surface of the parapet 2, so that the steering of the roof car 4 can be quickly corrected. , you won't have to waste time.

6 and 7 show other embodiments of this invention.

In FIGS. 6 and 7, the same reference numerals as in FIGS. 3 and 4 indicate the same parts, 25 is an arm-operated travel stop limit switch, and 26 is provided at the tip of the arm 27 of this limit switch 26. A rolling element 28 is a detector fixed to the inner wall surface of the parapet 2, and this detector 28 is arranged so that the rolling element 26 of the travel stop limit switch 27 faces when the roof car 4 is located at the center of the window row of the building. It is located. Although not shown, the travel stop limit switch 27 has a normally open contact. and,
Roof car 4 traveling along parapet 2
stops at the center of the window row of the building, and guide wheels 12
Only when both a and 12b are in contact with the inner wall surface of the parapet 2, the elevation control circuit is energized.

Therefore, in the building cleaning machine of the embodiment shown in FIGS. 6 and 7, the elevating body 5 is raised and lowered only when the roof car 4 is parallel to the inner wall surface of the parapet 2 at the center of the window row of the building. Similar to the embodiments shown in FIGS. 3 to 5, there is no fear that the guide wheels 5a of the elevating body 5 will interfere with the upper part of the parapet 2 or be damaged.

As explained above, in the building cleaning machine of this invention, the roof car is provided with rolling elements that roll on the inner wall of the parapet on the roof of the building in close proximity to the front and rear guide wheels, respectively. However, a detection means such as a limit switch is connected to these rolling elements, and when the guide wheel is separated from the inner wall surface of the parapet, the rollers are also separated from the inner wall surface and the detection means is activated. By preventing the elevating object from being lifted or lowered without being parallel to the inner wall surface of the roof car's parapet, the elevating object can be lowered from the roof car stopped at a position corresponding to the required window row. It is possible to prevent parts such as guide wheels from interfering with parts of buildings such as parapets, thereby preventing damage to elevating bodies and buildings, and also preventing the roof car from adjusting its position while it is running. By noticing the need early, work efficiency can be improved.

[Brief explanation of drawings]

Fig. 1 is a partially sectional front view showing the relationship between a conventional building cleaning machine and a building, Fig. 2 is a plan view of the same, and Fig. 3 shows the main parts of a building cleaning machine according to an embodiment of this invention and the building. FIG. 4 is a plan view of the same, FIG. 5 is a diagram showing the main part of the electrical circuit of a building cleaning machine according to an embodiment of this invention, and FIG. FIG. 7 is a partially sectional front view showing the relationship between the building cleaning machine and the building according to the embodiment, and FIG. 7 is a plan view thereof. 1... Roof of a building, 2... Parapet, 4...
Roof car, 5... Elevating body, 12a, 12b...
Guide wheels, 16a, 16b...limit switches, 17a, 17b...rollers. Note that the same reference numerals in the figures indicate the same or corresponding parts.

Claims (1)

[Scope of utility model registration request] A building cleaning machine comprising a trackless roof car 4 having wheels 7 and 9 that runs on the floor of the roof 1 of a building, and an elevator 5 consisting of an automatic cleaning unit 5 or a work floor suspended by the roof car 4. Before rolling the inner wall surface of the parapet 2 on the rooftop 1, the roof car 4 is provided with rolling elements 17a and 17b that roll on the inner wall surface of the parapet 2 in proximity to the rear guide wheels 12a and 12b, respectively. The rollers 17a, 17b of the limit switches 16a, 1
The guide wheel 1 is connected to a detection means such as 6b.
A building cleaning machine characterized in that a detecting means is operated by detecting contact and separation of the parapet 2 with rollers 17a and 17b.