JPH10297840A - Speed governor for elevator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To install a speed governer on a car without using a special equipment, and normalize the installation position of a rope for speed governer, by suspending the rope for speed governer from a side face of a hoistway. SOLUTION: An upper part of a rope 7 for speed governer is suspended by a rope bracket 15 for speed governer to an upper part of a rail for car 11. The tension of the rope 7 for speed governer is adjusted by the weight of a weight 9 for speed governer mounted on a lower part of a hoistway 8. Whereby it becomes unnecessary to install a speed governer 1 in an engine room, on a lower part of the hoistway or the like. That is, the installation of the speed governer 1 is not limited by the equipment of the engine room, the shape of a top part of the hoistway, and the length of an interval, and the installation of the rope 7 for speed governer can be normalized. Further the length of the rope 7 for speed governer is half of that of a conventional one, so that the cost can be reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a governor for an elevator.

[0002]

2. Description of the Related Art Elevators automatically turn off power at a set speed when the speed of a car increases abnormally, and mechanically lower the car when the lowering speed of the car exceeds a specified value. It is required by law to install a device that stops the operation. For this reason, a governor for mechanically detecting the speed of the car is provided, and the governor is operated using a governor rope installed in the hoistway. The governor rope is driven by a car. An elevator using a system in which this governor is installed above the hoistway, for example, a system disclosed in Japanese Utility Model Laid-Open No. 3-49271 is generally used.

As a method without using a governor rope, Japanese Patent Application Laid-Open No. 5-262472 discloses a method of directly contacting a governor with a guide rail and detecting the speed.

On the other hand, Japanese Utility Model Laid-Open Publication No. 60-193373 discloses a method in which a governor rope is suspended from the top of a hoistway and the governor body is fixed to a car.

[0005]

In a conventional system in which a governor rope is installed in a hoistway and a governor is driven in a machine room, the installation location of the governor is equal to that of the governor rope. Limited by location. Since the governor rope is driven by the car, the position of the governor rope and the car is limited due to the shape of the governor rope and the car engaging device. This is because the machine rope must be installed in the entire hoistway, so that it does not interfere with other equipment in the hoistway.

At the same time, in the machine room where the governor is installed, a device for controlling the elevator, including the traction machine, must be installed. Although the shape and size of the machine room vary depending on the building, the machine room for elevators is generally narrow, and the arrangement of devices in the machine room is limited. Depending on the property, the traction machine or the traction machine platform and the governor interfere with each other. To avoid this, the traction machine platform and the governor platform are specially manufactured, equipment on the hoistway, cars, etc. Must be reconsidered.

[0007] However, designing and manufacturing a stand for each property with respect to a standard traction machine stand causes an increase in cost.

[0008] In addition, a property that cannot be handled by this method may be provided with a second machine room in addition to a machine room in which a traction machine is installed.

To solve these problems, Japanese Patent Application Laid-Open No. 5-262472
In Japanese Patent Application Laid-Open Publication No. H10-209, the problem can be solved by not using a governor rope, but in this system, a slip occurs between the rail and the governor, and there is a problem in reliability as a safety device.

[0010] To solve these problems, Japanese Utility Model Application Laid-Open No. 60-193373 discloses that the speed governor is fixed to the car and the speed governor rope is fixed to the top of the hoistway, so that the location of the machine room equipment is reduced. This shows a reliable mechanism similar to the conventional one, without being affected by a problem. However, the gap between the top of the hoistway and the top of the car is not always constant. Even if the car is on the top floor, the machine room is too high to reach the hoistway from the top of the car. In this case, it is necessary to provide a special scaffold for maintenance such as installation and adjustment of the governor rope, and the workability is poor.

Further, in many cases, it is not possible to suspend the governor rope at an arbitrary position on the top of the hoistway. This is because there are often irregularities at the top of the hoistway because of the traction machine in the machine room on the hoistway and the provision of beams to support other heavy objects. In terms of strength, in order to suspend the governor rope, a site having sufficient strength to support the weight of the governor rope and the load during operation must be selected.

However, due to the structure of the car, there are restrictions on the position where the governor is fixed. Also, in order to standardize elevator parts, it is better to fix the installation position of the governor rope.

As described above, when the speed governor rope is suspended from the upper part of the hoistway, the position is restricted by both the building and the elevator, and it is difficult to install many properties. Takes time and increases costs.

An object of the present invention is to provide an elevator in which a governor is fixed to a car and which is standardized and inexpensive.

[0015]

A feature of the present invention is that, in an elevator in which a speed governor is fixed to a car, a governor rope is attached to a car rail, a counterweight rail, a hoistway wall, etc. other than at the top of the hoistway. Is fixed to the part.

By hanging the governor rope from the side of the hoistway, the governor rope can be hung without being affected by the shape of the top of the hoistway or the length of the gap. This solves the above problem.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will now be described with reference to FIGS.
FIG.

The car 5 and the counterweight 10 suspended by the main rope 2 are respectively provided with car rails 11,
It is supported by a counterweight rail 12. Driven by the traction machine 14, the car 5 and the counterweight 10 move up and down in the hoistway 8.

When the car 5 descends and reaches the first set speed A of the governor 1, the switch of the governor 1 is activated and the traction machine 14 automatically stops. Further, when the car 5 exceeds the set speed A and descends at the second set speed B, the weight of the governor 1 grips the governor rope 7 and operates the safety gear 13. Thus, the car 5 is forcibly stopped.

The upper part of the governor rope 7 is fixed to the upper part of the car rail 11 by a governor rope bracket 15a.
To hang. The tension of the governor rope 7 can be adjusted by the weight of the governor weight 9 installed below the hoistway 8. This eliminates the need to dispose the governor in the machine room, the lower part of the hoistway, or the like as in the related art. For this reason, the arrangement of the governor is not limited by the equipment in the machine room, the shape of the top of the hoistway, and the length of the gap, and the arrangement of the governor rope can be standardized.

FIG. 3 shows another embodiment according to the present invention. The governor rope 7 is suspended from above the hoistway 8 by a hoistway fixing bracket 15b installed on the side surface of the hoistway.

FIG. 5 shows an example of the arrangement of a governor 1 according to the prior art. The governor rope 7 is wound around the governor 1 arranged in the machine room 6 and the governor pulley 17 arranged below the hoistway 8, and is engaged with the car 5. The governor rope 7 moves together with the car 5 to drive the governor 1. Here, since the speed governor 1 is arranged in the machine room 6, the installation position is restricted by the traction machine 14 or other machine room equipment. This is the same when the governor pulley 15 is arranged in the machine room and the governor 1 is arranged below the hoistway 8. According to the present invention, the installation of the governor is not affected by the equipment in the machine room.

In the present invention, the length of the governor rope 7 may be half the length of the conventional art. Therefore, costs can be reduced.

[0024]

As described above, according to the present invention, the governor can be arranged in the car, and the arrangement position of the governor rope can be standardized. Therefore, the arrangement of the governor is not affected by the equipment in the machine room, and the degree of freedom in designing the elevator is increased, so that an elevator having a higher degree of freedom in designing the building can be obtained at low cost.

[Brief description of the drawings]

FIG. 1 is an explanatory view in which a governor rope according to the present invention is fixed to a car rail.

FIG. 2 is an explanatory view of an elevator according to the present invention.

FIG. 3 is an explanatory view of another embodiment in which the governor rope according to the present invention is fixed to the hoistway side surface.

FIG. 4 is an explanatory view of a method of fixing the lower side of the governor rope according to the present invention.

FIG. 5 is an explanatory view of an elevator according to a conventional technique.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... governor, 2 ... main rope, 5 ... car, 6 ... machine room, 7 ... governor rope, 8 ... hoistway, 9 ... governor rope weight, 10 ... counterweight, 11 ... Cage guide rail, 12 ... counterweight rail, 13 ... emergency stop,
14: Traction machine, 15: Bracket for governor rope.

Claims (5)

[Claims] A car, a hoistway on which the car moves up and down, a car rail for guiding the car, a counterweight for balancing the weight of the car in a certain range when the weight of the car is heavy, When the above-mentioned counterweight is attached, the counterweight rail that guides the above-mentioned counterweight, the emergency stop to stop the above-mentioned car when the descending speed of the car exceeds the specified value, the abnormal speed of the above-mentioned car A speed governor that detects and operates an emergency stop, a rope for a speed governor that is installed in the elevating direction of the car in the hoistway where the car rises and lowers and transmits the speed of the car to the governor, An elevator provided with a governor guide for guiding the governor rope, wherein the governor rope is fixed to a side portion in the hoistway. 2. The elevator according to claim 1, wherein the governor rope is suspended by a governor rope bracket attached to the car rail. 3. The elevator according to claim 1, wherein the governor rope is suspended by a governor rope bracket attached to a side surface of the hoistway. 4. A speed governor rope comprising the governor provided in both the rider and the counterweight, and a governor rope for driving the counterweight attached to a side portion of the hoistway. The elevator of claim 1, wherein the elevator is suspended by a bracket. 5. A speed governor rope comprising the governor provided on both the rider and the counterweight, and the governor rope for driving the counterweight attached to the counterweight guide rail. The elevator of claim 1, wherein the elevator is suspended by a bracket.