JPS629517B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an elevator derailment detection device.

First, a conventional elevator derailment detection device will be explained with reference to FIGS. 1 to 3.

In the figure, 1 is a hoistway, 2 is a fixed body made of the wall of the hoistway, and 3 is a guide rail made of steel with a T-shaped cross section, which is erected facing each other in the hoistway 1. It is fixed to the fixed body 2 by a plurality of brackets 4 arranged at appropriate intervals. Reference numeral 5 indicates an elevating body consisting of an elevator counterweight, and numeral 6 indicates guide shoes provided at each of the four corners of the elevating member 5 and facing the guide rail 3. These are the tips of the T-shaped legs of the guide rail 3. The elevating body 5 is movably engaged with and guided by the guide rail 3 by a guide shoe 6 and moves up and down. Reference numeral 7 denotes a contact body made of a conductive material and placed between the elevating body 5 and the elevator car 8. One end of this is fixed to the four corners of the elevating body 5, and the tip of the other end is made of a conductive material. A U-shaped contact 9 is fixed thereto. The contactor 9 is configured to move up and down within the hoistway 1 as the elevating body 5 moves. Reference numeral 10 denotes a conductive wire inserted through the center of the U-shape of the contactor 9 and arranged along the ascending and descending path of the elevating body 5; 11 a clip for fixing the conductive wire 10 to the rod 12 at the upper and lower ends; 13; 16 is a spring seat for the spring 15, and 17 is a support for pulling the rod 12 through the insulator 14 by the spring 15, which is fixed to the guide rail 3.
2, and both are tensioning devices for tensioning the conductive wire 10 in the hoistway 1.

Reference numeral 18 indicates a linear spring in which an elastic material such as a piano wire is bent to form a hole at one end through which the conductive wire 10 is inserted, and the other end is fixed to an insulator 19; 20 is a linear spring to which the linear spring 18 is fixed. This is a fixture for fixing the insulator 19 to the guide rail 3. 21 is a detection relay electrically connected to the conductive wire 10 at one end and the battery 22 at the other end.

That is, when the elevating body 5 is subjected to an earthquake force and the guide shoe 6 disengages from the guide rail 3 and comes off the rail, the contactor 9, that is, the contact body 7 comes into contact with the conductive wire 10, and the negative of the elevating body 5 and the battery 22 is removed. Since the side is grounded, the current from the battery 22 flows to the detection relay 21, the conductive wire 10, the contact body 7, and the elevating body 5, and the detection relay 21 is activated. The operation of the detection relay 21 causes the elevator control device (not shown) to operate, and so-called controlled operation such as sudden stop and landing on the nearest floor is performed. In general, in such controlled operation, after the elevator is suddenly stopped with the activation of the detection relay 21, the car 8 is run at low speed in a direction where the car 8 and the elevator 5 do not collide, and is brought to the nearest floor. . In order to drive the car 8 and the elevator 5 in a direction in which they are separated, it is necessary to recognize the relative positional relationship between the car 8 and the elevator 5 in the height direction of the hoistway 1 when the car 8 and elevator 5 suddenly stop. Contacts of a floor selector (not shown) provided in the control device were used. However, this floor selector generally has contact points that are spaced apart and has poor accuracy in recognizing the relative position of the car 8 and the elevator 5. Also, when the elevator suddenly stops, the hoisting rope and the hoisting machine's net (not shown), there is a risk that the correct relative positional relationship cannot be recognized, especially in places where the car 8 and the lifting body 5 intersect, resulting in driving in a direction where the car 8 and the lifting body 5 collide. It was hot.

The present invention solves the above-mentioned drawbacks, and aims to provide an elevator off-rail detection device that accurately detects the relative positional relationship between the elevator car and the elevating body when the elevator car comes off the rail.

An embodiment of this invention will be described below with reference to FIGS. 4 to 6.

In the figure, the same reference numerals as in FIGS. 1 to 3 indicate corresponding parts, 10a is an upper conductive wire, 10b is a lower conductive wire arranged in series therewith, and 23 is a machine for connecting the upper and lower conductive wires 10a and 10b. 24 is a clip for hooking the upper and lower conductive wires 10a, 10b to the insulating connector 23, and 21a is an upper conductive wire 1
The upper detector consists of an electromagnetic relay with one end electrically connected to 0a and the other end connected to the battery 22.
1b is similarly provided and lower conductive wire 1
The lower detector is connected to 0b.

That is, the elevating body 5 comes off the rail and the contact body 7 is connected to the upper conductive wire 10a or the lower conductive wire 10.
Upon contact with b, the upper detector 21a or the lower detector 21b is activated, respectively. Therefore, if the insulating connection body 23 of a size that allows the U-shaped contact 9 to pass is located approximately in the middle of the hoistway 1 in the height direction, the hoisting body 5 will not come off at the top or bottom of the hoistway 1. It becomes possible to directly recognize whether or not the vehicle has hit the rail. As a result, in an elevator, for example, when the elevator 5 comes off the rail at the upper part and the upper detector 21a is activated, in order to prevent the car 8 and the elevator 5 from colliding, it is sufficient to lower the car 8 after stopping. ,
Conversely, if the lower detection relay 22b is activated, it is sufficient to raise it. Further, while the elevator 5 is descending, the upper detector 21a is activated and the elevator suddenly stops, but if the elevator further rushes and the lower detector 21b is also activated, the car 8 and the elevator 5 will not collide if the car 8 is raised.

In this way, the off-rail position of the elevating body 5 can be recognized as an absolute position by the off-rail detection itself, so it is accurate, and it is possible to ensure the safety of the passengers in the car 8 when the elevator operates after coming off the rail. . Furthermore, since the conductive wire 10 can be divided into at least two parts in the middle by an insulator, the number of electromagnetic relays can be reduced compared to the use of conventional floor selectors, making it possible to reduce the cost.

FIG. 7 shows another embodiment of this invention,
In the figure, the same symbols as in Figures 4 to 6 indicate corresponding parts,
23 is an insulated connection body having holes 25 for inserting the upper and lower conductive wires 10a and 10b, respectively;
24 is the upper conductive wire 10a, 10b is the hole 2
Clip to prevent you from falling out of 5, 2
6 has one end fixed to the insulating connection body 23 with a bolt 27, and the other end movably guided in the vertical direction by the bolt 28 and a clamping plate 30 to the elongated hole 29a of the guide plate 29. A guide arm 31 that also prevents horizontal shaking is attached to the guide plate 2 together with the bolt 32.
9 to the guide rail 3. In this embodiment as well, since the conductive wire 10 is electrically insulated from the upper and lower conductive wires 10a and 10b, it is possible to perform the same function as in the embodiments shown in FIGS. 4 to 6. , since the guide 26 is guided and can move in the vertical direction against the aging of the lower conductive wires 10a, 10b, the upper and lower conductive wires 10a, 10b
It is possible to prevent horizontal shaking without compromising verticality. Furthermore, since the insulating connection body 23 is plate-shaped, the thickness can be kept thin so that the U-shaped contact 9 can pass through, and the width can be made wide, so that the tension of the upper and lower conductive wires 10a and 10b can be increased. However, sufficient mechanical strength can be ensured.

In addition, in the above embodiment, an example was shown in which the conductive wire 10 was divided into two parts, but in an elevator with an express zone, the conductive wire 10 is divided into three or four parts in series and divided into three or four parts in order to recognize that it is in an express zone. each conductive wire 10
It is clear that the same effect can be obtained even if the detector is placed at

As explained above, the present invention is such that when an elevating body moving up and down a predetermined path deviates from this path, a contact body provided on the elevating body comes into contact with a stretched conductive wire. The area is electrically insulated and divided into a plurality of areas in series along a predetermined route. This makes it possible to detect the position at which the elevating body has come off the rails as an absolute position, thereby realizing an elevator off-the-rails detection device that allows recovery work to be carried out safely and easily.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal cross-sectional view of a hoistway showing a conventional elevator derailment detection device, Fig. 2 is a sectional view taken along the line - - in Fig. 1, and Fig. 3 is a main electrical circuit of the elevator derailment detection device shown in Fig. 1. 4 is a diagram corresponding to FIG. 1 showing an embodiment of the elevator derailment detection device according to the present invention, FIG. 5 is an enlarged view of a portion of FIG. 2, and FIG. 6 is a diagram corresponding to FIG. FIG. 7 is a diagram corresponding to FIG. 5 showing another embodiment of the elevator derailment detection device according to the present invention. 2... Fixed body, 5... Lifting body, 7... Contact body,
10a... Upper conductive wire, 10b... Lower conductive wire, 21a... Upper detector, 21b... Lower detector. In the drawings, the same or equivalent parts are indicated by the same reference numerals.

Claims (1)

[Claims] 1. An elevating body that moves up and down along a predetermined route along a fixed body;
A plurality of conductive wires are stretched along the predetermined route and are electrically insulated from each other and arranged in series, and a contact body is provided on the elevating body and comes into contact with the conductive wire when the elevating body deviates from the predetermined route. and a detector disposed corresponding to the conductive wire and activated when the contact body comes into contact with the conductive wire.