JPH0428687A - Elevator tall cord wiring structure - Google Patents

Abstract

PURPOSE:To prevent a spindle side tail cord from being caught by equipment in an elevation passage and improve the safety and reliability by connecting the other end side of the spindle side tail cord with a basket side tail cord in an middle relay box in the elevation passage from the lower part of a basket where it is connected in the form of a U-letter avoiding the bottom surface of an elevation passage lower end pit. CONSTITUTION:For a spindle side tail cord 30, one end side is connected with a balance spindle 6, so it is connected with a stator 7, and the other end side is guided the center in an elevation passage 1, so it is fixed to a stopping part 31 at a lower part of a basket 5 leaving a U-letter shaped allowance in such a range that it will not get in contact with a lower end pit bottom surface 1a in the elevation passage 1. An extended part is then connected with a connection box 32 under the basket 5. In addition, the other end side of the cord 30 is integrated with a basket side tail cord 33 from the connection box 32, and it is connected with a middle relay box 12 at one side part of elevation from a stopping part 34 at a lower part of the basket to be connected with an external power source. The balance spindle 6 and the basket 5 can thus be moved to the uppermost floor or the lowest floor without stretching the cord 30, so U-letter shaped suspended parts 30a, 33a in the middle are kept in a length having such an allowance that they will not get in contact with the bottom surface 1a.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention mainly relates to a wiring structure of a tail cord connected to a counterweight side of a linear motor-driven elevator.

(Prior Art) FIGS. 4 and 5 show a linear motor-driven elevator. A deflection sheave 2.3 is provided in the upper part of the hoistway 1, and a main rope 4 is wound around the deflection sheave 2, 3 so that both ends hang down inside the hoistway 1, and a car 5 is attached to one end of the main rope 4.
A counterweight 6 is connected to the other end, and the car 5 and the counterweight 6 are suspended via the main rope 4 so as to be able to move up and down.

For driving the car 5 and counterweight 6 up and down,
A stator 7 of the linear motor is provided on the counterweight 6, and a reaction plate 8 of the linear motor is attached vertically to the inner wall surface of the hoistway that closely opposes the side surface of the counterweight 6 opposite to the car. By supplying power to the stator 7, a magnetic thrust is generated between the stator 7 and the reaction plate 8, and this thrust causes the counterweight 6 and the car 5 to move up and down relative to each other via the main rope 4. There is.

Power is supplied to the stator 7 of the linear motor using a tail cord (power supply cable) 9. This tail code (
The wiring 9 (hereinafter referred to as the weight side tail cord) has one end connected to the counterweight 6 and connected to the stator 7, and the other end connected to the intermediate wire installed at a height approximately midway between the inside of the hoistway 1 and the side wall. It is connected to the joint box 10 and connected to an external power source.

Furthermore, a tail cord 11 for illumination, transmission and reception of control signals, and communication is also provided on the side of the car 5. This car-side tail cord 11 is connected at one end to the lower part of the car 5 and at the other end to an intermediate joint box 12 installed at approximately the mid-height in front of the side wall of the hoistway l and connected to an external power source. etc. are connected.

The weight side tail cord 9 and the car side tail cord 1
1, the counterweight 6 and the car 5 should not be strained even when they move to the top floor or the bottom floor, and the intermediate U-shaped hanging portions 9a, lla should have a margin so that they do not come into contact with the bottom surface 1a of the pit portion at the lower end of the hoistway 1. It is said to have the same length.

As shown in FIG. 5, a pair of left and right guide rails 13.14 are attached to the inner wall of the hoistway 1 via rail brackets 15.16, and these left and right guide rails 13.14 balance the car. The weights 6 are guided via respective guide shoes 17,18.

In addition, in the figure, 19 is a landing switch provided at each floor position in the hoistway 1, 20 is a limit switch provided at the upper and lower terminal floor positions in the hoistway 1, and 21 is a governor rope 22.
It is a steady rest device.

(Problem to be Solved by the Invention) By the way, in the above-mentioned conventional elevator, even if the car side tail cord 11 sways during ascending and descending operation, there is no problem because the area around the wiring is a wide space as shown in Fig. 5. However, when the weight side tail cord 9 swings, the rail bracket 16 and the landing switch 1 at each floor position are placed near this wiring.
9 and limit switches 20 at the upper and lower terminal floor positions, the intermediate U-shaped hanging portion 9a of the weight-side tail cord 9 is likely to be caught by these devices. Even if the weight-side tail cord 9 is wired to the other side wall of the hoistway in the opposite direction to that shown in FIG. 5, it is likely to get caught on equipment such as the rail bracket 16 and the governor rope steadying device 21. For this reason, there is a problem in that the weight-side tail cord 9 gets caught in the equipment, causing damage to the cord 9 itself, breakage, or damage to the equipment, causing the elevator to stop.

The present invention was developed in view of the above circumstances, and provides a safe and reliable elevator tail cord wiring structure that prevents the weight side tail cord connected to the counterweight side from getting caught on various equipment in the hoistway due to sway. The purpose is to provide.

[Structure of the invention]

(Means for Solving the Problems) In order to achieve the above object, the present invention connects a car to one end of a main rope wound around a sheave on the hoistway, a counterweight to the other end, and balances these cars. The elevator raises and lowers a weight in a hanging manner, and the other end of the weight side tail cord, one end of which is connected to the counterweight, is formed in a U-shape with a margin so that it does not touch the bottom of the pit at the lower end of the hoistway. The car is connected to the lower part of the car, and the lower part of the car is connected to the hoistway intermediate joint box either integrally with the car side tail cord or separately.

(Function) With the elevator tail cord wiring structure configured as described above, the weight side tail cord, which has one end connected to the counterweight, can avoid passing through the inner side of the hoistway, which is spatially narrow and where various equipment is arranged. , guided toward the center of the hoistway, connected to the bottom of the car in a U-shape with enough room to avoid touching the bottom of the bottom pit, and connected from the bottom of the car to the car side tail cord, either integrally or separately, to the car side. The cable is connected to the intermediate joint box on the inner wall of the hoistway through a wide space near the front of the hoistway, so even if the tail cord on the car side or the tail cord on the weight side shakes during lifting operation, various equipment in the hoistway will be protected. This prevents the tail cord from getting caught, preventing damage to the tail cord, disconnection, and damage to equipment.

(Example) An example of the present invention will be described below with reference to FIGS. 1 and 2. Components in the figure that overlap with those shown in FIGS. 4 and 5 are given the same reference numerals to simplify the explanation.

The elevator shown in FIGS. 1 and 2 is of the linear motor drive type as described above, and the stator 7 of the linear motor is provided on the counterweight 6, and the stator 7 of the linear motor is installed on the inner wall surface of the hoistway 1 that is close to and opposite to the side surface of the counterweight 6 opposite to the car. A reaction plate 8 of a linear motor is attached above and below, and when power is supplied to the stator 7, the thrust generated by the magnetic force between the stator 7 and the reaction plate 8 moves the balance weight 6 and the car 5 to the main lobe 4. It is configured to move up and down relative to each other.

Here, a tail cord on the weight side (
A power supply cable) 30 is provided.

This weight side tail cord 30 has one end connected to the counterweight 6 and connected to the stator 7, and the other end guided toward the center of the hoistway 1, and is connected to the lower end of the hoistway 1 on the pit bottom surface 1a.
Connect it to the locking part 31 at the bottom of the car 5 with a margin in a U-shape so that it does not touch the car 5, and connect the extension part to the connection box 32 provided at the bottom of the car 5. There is. Further, the other end of the weight side tail cord 30 is connected to the connection box 3.
2 to the car side tail cord (cable for sending/receiving lighting and control signals, and communication) 33 (-Tohoku), and from the locking part 34 at the bottom of the car 5 to the inside of the hoistway 1 - approximately mid-height in front of the side wall part. It is connected to an intermediate joint box 12 installed in the center and connected to an external power source and the like.

The weight-side tail cord 30 and the car-side tail cord 33 integrated with this other end do not become strained even when the counterweight 6 and the car 5 move to the top or bottom floor, and the intermediate U-shaped hanging portion The lengths 30a and 33a are set to have a sufficient length so that they do not come into contact with the bottom surface 1a of the pit portion at the lower end of the hoistway 1.

Accordingly, with the tail cord wiring structure having the above configuration, the weight side tail cord 30 whose one end is connected to the counterweight 6 does not pass through the inner side of the hoistway 1, which is spatially narrow and where various types of equipment are arranged. without being guided towards the center of hoistway 1,
It is connected to the lower part of the car in a U-shape without touching the lower end pit bottom surface 1a, and is passed from the lower part of the car 5 together with the car side tail cord 33 through a wide space near the front of the car side. Since it is connected to the intermediate joint box 12 at approximately the middle height in front of the inner wall of the hoistway 1, the car side tail cord 3
3, of course, connect the weight side tail cord 30 to the equipment in the hoistway 1 (the rail bracket 16, the landing switch 19 at each floor position, and the limit switch 2 at the upper and lower terminal floor positions).
0, governor lobe steady rest device 21, etc.), and these tail cords 30.33
Even if the tail cord 30.3 shakes during lifting operation, it will not get caught on various equipment in the hoistway 1, and the tail cord 30.3
3. There is no need to worry about damage or disconnection of wires or damage to equipment.

Next, another embodiment of the present invention will be described with reference to FIG. In this case, a weight-side tail cord (power feeding cable) 40 is provided on the counterweight 6 or for feeding power to the stator 7 of the near motor. This weight side tail cord 40 has one end connected to the counterweight 6 as described above. The other end is connected to the stator 7, and the other end is guided toward the center of the hoistway 1, and the lower end of the hoistway 1 is connected to the lower part of the car 5 in a U-shape so that it does not touch the pit bottom surface 1a. It is connected to the stop part 41. Then, the other end extension part 40A of the weight side tail cord 40 is lengthened and connected to the locking part 42 at the lower part of the car 5, and then the weight side tail cord 40 is not integrated with the car side tail cord 43 but is connected to the car side tail cord 43 as a separate body. They are connected to an intermediate joint box 12 which is installed in parallel at approximately the mid-height in front of the side wall of the hoistway 1, and is connected to an external power source or the like.

In this case as well, the weight-side tail cord 40, the other end-side extension 40A, and the car-side tail coat 43 are not stretched even when the counterweight 6 and the car 5 move to the top or bottom floor, and moreover, Letter-shaped hanging parts 40a, 40
b, 43a is set to have a sufficient length so as not to contact the bottom surface 1a of the pit portion at the lower end of the hoistway 1.

Even with such a tail cord wiring structure, as in the above embodiment, not only the car side tail cord 43 but also the weight side tail cord 40 and the other end side extension portion 40
A can be sufficiently separated from the equipment in the hoistway 1 in plan view, and even if these tail cords 40 and 43 shake during lifting operation, they will not get caught in the various equipment in the hoistway 1. There is no need to worry about damage or breakage of the tail cords 40, 43 or damage to equipment.

〔Effect of the invention〕

Since the present invention is configured as described above, the weight-side tail cord, which is connected at one end to the counterweight, can be moved closer to the center of the hoistway without passing through the inner side of the hoistway, which is spatially narrow and where various types of equipment are arranged. The lower end is connected to the bottom of the car in a U-shape without touching the bottom of the pit, and connected to the bottom of the car, either integrally or separately with the tail cord on the car side, to a wide space near the front of the car side. Since it is connected to the intermediate joint box on the inner wall of the hoistway, even if the tail cord on the weight side as well as the tail cord on the car side swings during hoisting operation, it will not get caught on various equipment in the hoistway. It is possible to prevent damage to the tail cord, breakage of the wire, and damage to equipment, thereby providing a safe and highly reliable elevator tail cord wiring structure.

[Brief explanation of drawings]

Figures 1 and 2 show an embodiment of the present invention; Figure 1 is a schematic configuration diagram of an elevator with a tail cord wired, Figure 2 is a plan view, and Figure 3 is a diagram of the present invention. FIG. 4 is a schematic configuration diagram of an elevator with a tail cord wired showing another embodiment of the invention, FIG. 4 is a schematic configuration diagram of an elevator with a tail cord wired showing a conventional example, and FIG. 5 is a plan view of the conventional example. be. 1...Hoistway, 1a...Bottom surface of the pit at the lower end of the hoistway, 2
゜3...sheave, 4...main robe, 5...basket,
6... Counterweight, 12... Hoistway intermediate joint box, 30° 40... Weight side tail cord, 33.34
... Car side tail cord. Applicant's agent Patent attorney Takehiko Suzue

Claims (1)

[Claims] An elevator in which a car is connected to one end of a main rope wound around a sheave at the top of the hoistway and a counterweight is connected to the other end, and the car and the counterweight are raised and lowered in a hanging manner, and one end is connected to the counterweight. Connect the other end of the connected weight-side tail cord to the lower part of the car in a U-shape with a margin so that it does not touch the bottom of the pit at the lower end of the hoistway, and then connect it to the lower part of the car from the bottom of the car, either integrally or separately with the car-side tail cord. An elevator tail cord wiring structure characterized by being connected to a hoistway intermediate joint box at the body.