JPS6137402Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to an automatic cleaning device for buildings such as buildings, and in particular to an automatic cleaning device equipped with a device that prevents wire rope from being wound around the hoisting drum. .

First, a conventional automatic building cleaning device will be explained with reference to FIGS. 1 and 2.

In FIGS. 1 and 2, 1 is the rooftop of the building, 2 is the roof car that runs on the rooftop 1, 3 is the frame of the roof car 2, 4 is the traveling device attached to the frame 3, and 5 is the vehicle mounted on the frame 3. 6 is a sheave pivotally supported on the frame 3; 7 is a hoisting machine;
8 is a lifting device such as a cleaning unit or a work floor; 8 is a hanging tool fixed to the lifting device 7; 9 is a hanging tool 8 whose tip is fixed to the hoisting drum 12 of the hoisting machine 5 via a sheave 6; 10 is a guide wheel attached to the elevating body 7, and 11 is a guide wheel 1 installed on the building.
0 is the guide rail to be engaged.

In the automatic cleaning device as described above, when the elevating body 7 is suspended by the wire rope 9 as shown in FIG. 1, there is no problem because the wire rope 9 is sufficiently tensioned. However, as shown in FIG. 2, when replacing the lifting body 7 consisting of a cleaning unit with another lifting body (not shown) such as a work floor, the lifting body 7 is supported on the rooftop 1. However, in order to facilitate the replacement of the elevating body 7, etc.
When the hoisting machine 5 is further rotated in the direction in which the wire rope 9 is paid out, and when the tip of the wire rope 9 is moved upward when replacing the elevating body 7, etc., the wire rope 9 is paid out from the hoisting machine 5. Sagging occurs in the area where it is. When the hoisting machine 5 is rotated in this state to lift the elevating body 7, several turns of the wire rope 9 come off the grooves (not shown) in the hoisting drum of the hoisting machine 5, and as a result, the two wire ropes 9 have different lengths at the ends, making it impossible to lift the lifting body 7, or suspending the lifting body 7 in an inclined state.
There is a drawback that the guide wheels 10 are difficult to engage with the guide rails 11 when the elevating body 7 is lowered, and there is a risk of the wheels coming off.

This invention is an attempt to eliminate the drawbacks of the conventional devices mentioned above. After the lifting body is removed from the wire rope during the replacement work of the lifting body, when the lifting body is reconnected to the wire rope and wound up, etc. An object of the present invention is to provide an automatic building cleaning device which prevents a wire rope from being randomly wound around a hoisting drum of an upper machine.

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

3 and 4 show the hoisting machine part, and FIG. 5 shows the main part thereof. In these figures, the same reference numerals as in FIGS. 1 and 2 indicate the same parts, 12 is a hoisting drum, 13 is a frame that rotatably supports the hoisting drum 12, and 14 is a frame fixed to the frame 13. A driving section 15 rotates the winding drum 12, a column 15 is fixed to the frame 13, and 16 is a winding prevention device fixed to the column 15. This irregular winding prevention device 16
The plate spring 17 has one end fixed to the tip of the support column 15, the bracket 18 fixed to the other end of the plate spring 17, a roller 19 made of a material with a large coefficient of elastic friction such as rubber, and a roller. 19 and a shaft 20 which is pivotally connected to the bracket 18. The roller 19 and the hoisting drum 12 are arranged so that their axial directions are parallel to each other, and the roller 19 is arranged so that the elevating body 7 of the two wire ropes 9, 9 located at the axial center of the hoisting drum 12 is hoisted up. Pressure P is applied to part of the winding drum circumferential direction of the unwinding start ends 9a, 9a and at least one or more turns of parts 9b, 9b continuously wound on the winding drum 12. .

Note that the configuration and basic operation of this embodiment other than those described above are the same as those of the conventional system shown in FIGS. 1 and 2, so illustration and description thereof will be omitted.

In this embodiment configured as described above,
When replacing the elevating body 7, the wire ropes 9, 9
By moving the wire rope 9 upward,
A force F is generated in the axial direction of wire rope 9, 9
Due to the frictional force between the wire ropes 9, 9, and the roller 19, even if a torque is generated to rotate the roller 19, the wire ropes 9, 9 are not continuously wound around the wire ropes 9, 9, at the wire ropes 9, 9, at the wire ropes 9, 9, 9, The frictional force between the portions 9b, 9b wound around the upper drum 12 and the roller 19 generates a torque that prevents the wire ropes 9 from rotating as shown in FIG.
The wire ropes 9 do not sag at the lower part of the hoisting drum 12, and the wire ropes 9, 9 can be prevented from winding irregularly around the drum 12. Also,
In order to facilitate the replacement work of the elevating body 7, even if the wire ropes 9, 9 are further unwound while the elevating body 7 has landed on a rooftop etc., the roller 19 always rotates together with the hoisting drum 12, and the wire rope 9 ,9
By reliably letting out the wire ropes 9, the wire ropes 9, 9 will not become slack and no irregular winding will occur, as described above.

In this embodiment, since both ends of the roller 19 are tapered, the wire ropes 9 can be smoothly mounted on the ends of the roller 19. Further, since the roller 19 is pressed against the hoisting drum 12 using the leaf spring 17, the material of the roller 19 can be made hard and has a large coefficient of friction, and the wire ropes 9, 9 of the roller 19 can be made of a hard material. This has the advantage that permanent deformation of the roller 19 can be prevented by reducing the elastic deformation at the contact surface of the roller 19, and that the roller 19 can be used for a long period of time.

In addition, since the replacement work of the elevating body 7 is performed while it is hoisted up to the roof car 2 on the rooftop 1,
The positions of the feeding start ends 9a, 9a of the wire ropes 9, 9 are at the center or both ends of the hoisting drum 12 in the axial direction as in this embodiment, so that the roller 19 is located at the center of the hoisting drum 12. Alternatively, if it is provided only in the portions facing both ends, it will work satisfactorily, and there is no need to provide it over the entire length of the hoisting drum 12.

FIG. 6 shows another embodiment of this invention. In FIG. 6, the same reference numerals as in FIG. A roller 19 formed by fixing a material with a large friction coefficient in a band shape around the entire circumference of the drum 12.
This contact portion 21 and the contact portion 21
The feeding start ends 9a, 9a of the wire ropes 9, 9 located on both sides of the wire ropes 9, 9 are brought into contact with a roller 19. It is clear that with this configuration, the rotation transmission between the hoisting drum 12 and the roller 19 is ensured, and the same effect as the embodiment shown in FIGS. 3 to 5 can be obtained.

As explained above, this invention is based on a plate spring whose one end is fixed to a column fixed to a frame that pivotally supports the hoisting drum, and whose axial direction is arranged parallel to the axial direction of the hoisting drum and whose both ends are A rotatable roller with a tapered portion is installed, and the roller is connected to the end of the wire rope from which the wire rope starts to be fed out to the hoisting drum when the elevating body is hoisted, and at least one end of the wire rope wound around the hoisting drum. Since the wire rope is pressed into contact with a part of the circumferential direction of the hoisting drum or the outer circumferential surface of the hoisting drum, after removing the wire rope and the elevating body when replacing the elevating body, etc. It is possible to prevent the wire rope from winding irregularly on the hoisting drum, which occurs when the same or other elevating bodies are connected to the hoisting drum, and the taper formed on both ends of the roller allows the wire rope to be easily wound at the end of the roller. can be smoothly boarded. Therefore, the time and number of workers required to replace the elevating body can be reduced, and safe and reliable operation of the elevating body can be expected.

[Brief explanation of the drawing]

Fig. 1 is a side view showing a conventional automatic building cleaning device, Fig. 2 is a side view for explaining the same operation, Fig. 3 is a perspective view showing the hoisting machine portion of the automatic building cleaning device according to this invention, and Fig. 4 The figure is a sectional view taken along the - line in FIG. 3, FIG. 5 is a view taken along the V arrow in FIG. 4, and FIG. 6 is a view corresponding to FIG. 5 showing another embodiment of this invention. 5...Hoisting machine, 7...Elevating body, 9...Wire rope, 9a...Feeding start end, 12...Hoisting drum, 19...Roller. In addition, the same parts or corresponding parts in the figures are indicated by the same reference numerals.

Claims (1)

[Scope of utility model registration request] A hoisting drum 12 that winds up and lets out a wire rope 9 for suspending the elevating body 7, and a support 1 fixed to a frame 13 that pivotally supports this hoisting drum 12.
5, one end of a leaf spring 17 is fixed to the leaf spring, and a rotatable roller 19 whose axial direction is arranged parallel to the axial direction of the hoisting drum 12 and has tapers at both ends is installed on the leaf spring, When the elevating body 7 is rolled up, the roller 19 is moved to the winding drum 12 at the end 9 at which the wire rope 9 starts to be fed out.
(a) and a hoisting machine 5 which is brought into pressure contact with a part of the circumferential direction of at least one or more winding drums wound on the hoisting drum 12 or the outer peripheral surface of the hoisting drum of the wire rope 9. An automatic building cleaning device featuring: