JP2538229Y2 - Tension device for skew elevator - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a tensioning device for applying tension to a governor rope of a skew elevator running on an inclined hoistway.

[0002]

2. Description of the Related Art An example of a conventional oblique elevator pulley device will be described with reference to the drawings. FIG. 7 is an overall schematic view of a skew elevator, 1 is a machine room installed at the top of the hoistway 2,
3 is a pit formed at the bottom of the hoistway 2, 4 is a car traveling in the hoistway 2, 5 is a counterweight, and 6 is a sheave of a hoist installed in the machine room 1. A main rope 7 is connected to the car 4 at one end, and is connected to the counterweight 5 at the other end via a deflecting wheel 8, a hoisting sheave 6, and deflecting wheels 9 and 10, and the main rope 7 , The car 4 and the counterweight 5 alternately move up and down in the hoistway 2 along a pair of guide rails (not shown).
2a is a ceiling surface of the hoistway 2 and 2b is a floor surface of the hoistway 2.

[0003] Reference numeral 20 denotes a governor pulley, and 21 denotes a governor rope fixed at both ends to the car 4 by a rope connecting portion 22. A deflector wheel 23, a governor pulley 20, and a deflector wheel 2
4, 25, a tension sheave 26, and a deflector sheave 27. 28 is a weight connected to the tensioning wheel 26,
, A constant tension is always applied to the governor rope 21. However, in this conventional example, it is necessary to dig deep into the pit portion 3 in order to dispose the stretcher 26, the weight 28, and the like, so that there is a problem that a long construction period of the elevator and an increase in installation cost are caused. .

In order to solve this problem, FIG.
An apparatus as shown in FIG. Figure 8 shows hoistway 2
30 shows one side of a pair of guide rails, and the upper surface thereof (the ceiling surface 2a of the hoistway 2).
Side), the car 4 travels. 31a, 3
1b is a guide rail fixed to the upper surface of the guide rail 30 by the support bracket 32. Numeral 33 denotes a tensioner device, which is a tensioner 26 of the speed governor rope 21, a weight 28 connected to the tensioner 26, a frame 34 to which the weight 28 is fixed, and running these along guide rails 31a and 31b. It comprises guide shoes 35a and 35b for guiding.

In the case of this conventional example, the guide shoe 3
5a only functions as a stopper for the sheave device 33, and the load of the sheave device 33 is applied to the guide shoe 35b. Therefore, the guide shoe 35
In some cases, a guide roller is used instead of b.
With this conventional device, it is not necessary to dig deep into the pit portion 3, so that space can be saved and the installation work of the elevator becomes easy.

[0006]

However, in the case of this conventional example, since the tensioning device 33 and the like are installed on the upper surface of the guide rail 30 on which the car 4 travels, interference with equipment on the side of the car 4 is prevented. In order to avoid this, it is necessary that the mounting position of the tensioning device 33 and the like be much closer to the bottom of the hoistway than when the car 4 is at the lowest floor. Therefore, there was a problem that the hoistway 2 had to be long. Further, since the support bracket 32 for supporting loads such as the tensioning device 33 and the guide rails 31a and 31b is fixed to the upper surface of the guide rail 30, the support bracket 32 becomes longer, so that its strength must be increased. There was also a problem.

[0007]

SUMMARY OF THE INVENTION The present invention provides a structure in which the moving locus of the weight of a tensioner is shifted downward (toward the floor 2b of the hoistway 2) from the motion locus of the tensioner, and the guide is provided. The mounting position of the rail is set from the upper surface of the conventional guide rail to the outer side surface of the guide rail, that is, the side surface opposite to the car.

[0008]

According to the present invention, since the car and the car do not interfere with each other, the installation position of the sheave device can be closer to the top than in the prior art, so that the hoistway length can be shortened. Also,
By attaching the guide rail to the side surface of the guide rail, the size of the support bracket can be reduced.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to the drawings. FIG.
FIG. 2 is a view corresponding to FIG. 8, FIG.
FIG. 4 is a left side view of FIG.
In the figure, reference numeral 40 denotes a tensioning device, which includes a tensioning wheel 26, a weight 28, a bracket 41 connecting the tensioning wheel 26 and the weight 28, a stopper 42 for the governor rope 21, and a guide roller 43. Reference numerals 44a and 44b denote a pair of guide rails, each of which is provided with a total of four guide rails. Reference numeral 4a denotes traveling wheels of the car 4, which travel on the upper surface of the guide rail 30. In this embodiment, normally, the load of the sheave device 40 is supported by the guide rail 44b, and the guide rail 44a only functions as a stopper for the sheave device 40. The guide rail 44a is installed to such an extent that a slight gap is formed between the guide rails 44a.

As shown in FIG. 2, in the present embodiment, the car 4
And the tensioning device 40 do not interfere. Therefore, the attachment position of the tensioning device 40 to the guide rail 30 is the same as that of the car 4
Can be raised closer to the top of the hoistway than before in a range where the rope connecting portion 22 (FIG. 7) does not hit the tensioning device 40, so that the length of the hoistway 2 can be shorter than in the conventional case. . Further, by shifting the movement locus of the guide roller 43 downward from the movement locus of the sheave 26, the guide rails 44a, 44b can be maintained without changing the position of the sheave 26.
Is shifted to the floor surface 2b side, the downsizing of the support bracket 45 is realized, and the installation work and the like are facilitated.

Although the spacer 46 is used in the above embodiment, it may be omitted if the support bracket 45 can be firmly fixed to the guide rail 30. Guide rail 4
The guide rails 4a and 44b are provided below the upper surface of the guide rail 30, but if they do not interfere with the governor rope 21 and the flange portion of the guide rail 30, the guide rail 3
0 may be located above the upper surface. Further, the tensioning device 40
Is configured without using a frame, but a frame for fixing the weight 28 and the like can also be used.

Next, another embodiment of the present invention will be described with reference to the drawings. In this embodiment, the number of guide rails is reduced to a pair. FIG. 5 is a view corresponding to FIG. 1, and FIG. In the figure, 44 is a pair of guide rails,
Similarly to the above-described embodiment, it is fixed to the guide rail 30 by the support bracket 45. Reference numeral 43a denotes a guide roller, which is disposed so as to sandwich the guide rail 44 with the guide roller 43. In the case of the present embodiment, the guide roller 43 normally supports the load of the sheave device 40, and the guide roller 43a only functions as a stopper for the sheave device 40. 43
“a” is arranged at a position where a slight gap is formed between the guide rail 44 and the guide rail 44. 1 and 2 indicate the same components.

In this embodiment, compared to the embodiment shown in FIG. 1, the number of long and heavy guide rails is reduced by one pair (two), and instead, the number of small and light guide rollers is increased by two (two). Therefore, there is an effect that the production, installation, and the like become easier as compared with the embodiment of FIG. The guide roller 43a is a roller for preventing the pulling wheel device 40 from coming off, and usually has a slight gap between the guide rail 30 and the guide roller 43a. Such a thing can also be used.

[0014]

[Effects of the Invention] As described above, according to the present invention,
It is possible to install the tensioning device of the speed governor without requiring a deep pit portion and without increasing the length of the hoistway.

[Brief description of the drawings]

FIG. 1 is a diagram showing an embodiment of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a diagram illustrating the tensioning device according to one embodiment of the present invention;

FIG. 4 is a left side view of FIG. 3;

FIG. 5 is a view showing another embodiment of the present invention.

FIG. 6 is a sectional view taken along line BB of FIG. 5;

FIG. 7 is an overall schematic view of a conventional skewing elevator.

FIG. 8 is an explanatory view showing a conventional tensioning device.

[Explanation of symbols]

 2 Hoistway 4 Car 21 Governor rope 26 Tensioner 28 Weight 30 Guide rail 31a, 31b, 44, 44a, 44b Guide rail 33, 40 Tensioner device 43, 43a Guide roller

Claims (1)

(57) [Scope of request for utility model registration] 1. An endless speed governor rope is disposed in a hoistway inclined with respect to a vertical line, and a tension pulley device for applying tension to the governor rope is provided on a hoistway bottom side.
In the oblique elevator provided with the guide rail for guiding the movement of the tensioning device, the guide rail is disposed on the opposite side of the guide rail for guiding the traveling of the car, and the tensioning device is provided with a weight. , is wound around the speed governor rope and the tension pulley located outside the side surface of the car, the moving track is arranged such that the hoistway floor closer than the movement locus of the tension wheel, the upper Symbol And a guide roller for guiding the movement of the sheave device along the guide rail.