CN101024465A - Elevator testing method and its assistant device and elevator device - Google Patents

Abstract

The present invention provides an elevator device, a test method, and the like capable of easily checking the operation of an emergency braking device. In the elevator test method of the present invention, the elevator car (2) can be suppressed from falling even when the driving sheave (5) of the hoisting machine is in a rotating state, thus the emergency control of the elevator car (2) Check the operation of the moving device (23), wherein the drive sheave (5) of the winch is moved toward the counterweight (7) in a state where the restoring force generating mechanism is deformed due to the fall of the counterweight (7). ) to rotate in the upward direction.

Description

Elevator test method and its auxiliary device and elevator device

technical field

The present invention relates to an elevator having an elevator car and a counterweight, and particularly relates to a technique suitable for confirming the action of an emergency braking device.

Background technique

In many elevator systems, the elevator car and the counterweight are connected by a main rope, and a hoist is provided, and the hoist is equipped with a drive sheave near the middle of the elevator car and the counterweight. In addition, the elevator system is configured such that the main rope is wound around the drive sheave, and the elevator car and the counterweight are moved up and down by rotating the drive sheave. Therefore, an emergency braking device is installed in the elevator car in order to be prepared in the event of an abnormal situation such as the breakage of the main rope.

In the above-mentioned elevator system, when checking the operation of the installed elevator emergency braking device, the test is carried out under the same conditions as the actual situation, such as dropping the elevator car, so it may cause local damage to the equipment. Therefore, Not an appropriate test method. For this reason, as a generally accepted simple test method, first consciously activate the emergency braking device of the elevator car, and at the same time drive it to raise the counterweight. The test was conducted to suppress the descent of the elevator car even when the sheave was rotating.

For example, the following Patent Document 1 discloses an elevator apparatus that reduces the torque of the hoisting machine required to idle the driving sheave by separating the counterweight when checking the operation of the emergency braking device. , thereby preventing the hoist from being enlarged.

Patent Document 1 JP-A-2003-2564 (Abstract etc.)

However, in the elevator apparatus disclosed in the above-mentioned Patent Document 1, since the structure of the counterweight is complicated, it is difficult to manufacture, and if a plurality of elevators are to be installed, a special counterweight must be attached to each elevator. Furthermore, it is difficult to apply the special counterweight of the said patent document 1 to the conventional elevator which has a normal counterweight.

Contents of the invention

An object of the present invention is to provide an elevator device, a test method, and the like that can easily check the operation of an emergency braking device.

In order to achieve the above object, in the elevator test method of the present invention, by confirming that the elevator car can be suppressed from falling even when the driving sheave of the hoisting machine is in a rotating state, the emergency braking device of the elevator car An operation check was performed in which the driving sheave of the hoist was rotated in a direction in which the counterweight was raised in a state where the restoring force generating mechanism was deformed by the lowering of the counterweight.

(invention effect)

According to the present invention, it is possible to provide an elevator device, a test method, and the like that can easily check the operation of an emergency braking device.

Description of drawings

Fig. 1 is a plan sectional view of a hoistway of an elevator apparatus in a first embodiment of the present invention.

Fig. 2 is a diagram showing an elevator test assisting device in the first embodiment of the present invention.

Fig. 3 is a diagram showing an elevator test assisting device in a second embodiment of the present invention.

Fig. 4 is a diagram showing an elevator test assisting device in a third embodiment of the present invention.

Fig. 5 is a diagram showing an elevator test assisting device in a fourth embodiment of the present invention.

Symbol Description

1 lifting channel

2 elevator cars

3.8 main sling fixing parts

4 main slings

5 driving sheave

6 guide pulley

7 balance weight

9 balanced reuse buffer table

9a Balanced reuse buffer guide

10 balanced reuse buffers

11 Regulatory Department

11a, 11b, 18, 18a base

Guide for 11c Restoration Department

11d Guide for auxiliary device installation

12 Department of Rehabilitation

13 Buffer table for elevator car

14 Buffer for elevator car

15 The floor slab of the elevator lobby on the lowest level

16 Floor slab of the elevator lobby on the top floor

17Top floor entrance

19 guide for auxiliary device

20 oil-immersed buffers for heavy balance

21 oil-immersed buffer table for heavy balance

22 oil-immersed buffer bearing seat for heavy balance

23 emergency braking device

24 pits

25 counterweight frame

26 buffer receiver

27a, 27b base mounting bolts

Detailed ways

Embodiments of the present invention will be described below with reference to the drawings.

Fig. 1 is a plan sectional view of a hoistway 1 of an elevator apparatus in a first embodiment of the present invention. The elevator device of the present embodiment is constituted such that there are an elevator car 2, a counterweight 7, and a winch (not shown) in the hoistway 1, the elevator car 2 and the counterweight 7 are suspended by the main rope 4, relying on the hoist The driving force of the drive sheave 5 moves up and down.

Here, the main rope 4 is configured to extend upward from the main rope fixture 3 provided on the elevator car 2 , pass through the drive sheave 5 , be wound around the guide pulley 6 and extend downward to reach the Main sling fixture 8 on counterweight 7. In addition, as the main rope 4 or the driving sheave 5 in this embodiment, a material covered with resin may be used, for example, other than steel. In addition, the elevator car 2 is configured to be raised and lowered along unshown elevator car guide rails, and the counterweight 7 is configured to be raised and lowered along unshown counterweight guide rails.

Furthermore, an emergency braking device 23 is provided in the elevator car 2, and a speed governor (not shown) is provided near the upper portion of the hoistway 1 . And, as the elevator car 2 moves, when the speed governor rotates and reaches an abnormal speed, the rope gripping mechanism of the speed governor acts to hold the speed governor rope, and through the connecting parts of the elevator car 2, it can be mechanically The emergency braking device 23 is activated to stop the elevator car 2 with a strong frictional force. And, in order to be prepared when the elevator car 2 descends at a speed that will not cause the emergency braking device 23 to act, at the pit 24 at the bottom of the hoistway 1, a buffer table 13 for the elevator car is installed. Buffer 14 for elevator car.

Similarly, on the counterweight 7, an emergency braking device (not shown) that acts against the overspeed of the counterweight 7 to prevent the counterweight 7 from falling is provided. Below the counterweight 7, the counterweight uses a buffer The stage 9 is provided with a balanced reuse buffer 10 .

In addition, in this embodiment, in addition to the balance weight buffer 10, a test auxiliary device is provided below the balance weight 7. The test auxiliary device has a base placed on the balance weight buffer 10, and is relatively The base has a guide extended in the vertical direction and a restoration part inserted into the guide. Hereinafter, details of the test support device will be described with reference to FIG. 2 .

As shown in FIG. 2 , the test auxiliary device of this embodiment was installed using the tubular counterweight buffer guide 9 a provided on the counterweight buffer 10 . In addition, this test auxiliary device specifically includes: an auxiliary device installation guide 11d inserted into the counterweight buffer guide 9a; The height adjusting part 11 of the device, the restoring part 12 formed of a coil spring or the like, the restoring part guide 11c inserted into the restoring part 12, and the base 11a on which the restoring part guide 11c is fixed. Here, the auxiliary device installation guide 11d, the bases 11a, 11b, the adjustment unit 11, and the restoration unit guide 11c are integrally formed.

Normally, this test auxiliary device is located in a place that does not form an obstacle in the recess 24, but in the test, first insert the auxiliary device installation guide 11d into the balance weight buffer guide 9a, and then insert the restoration part 12 To the guide 11c for the restoration part to be installed on the buffer 10 for balance and reuse.

Hereinafter, the method of the operation confirmation test of the emergency braking device 23 installed on the elevator car 2 according to the present embodiment will be described. In the first step, as described above, the test auxiliary device is arranged under the counterweight 7 . In the second step, the balance weight 7 is lowered until the lower end of the balance weight 7 reaches a position near the upper end of the test auxiliary device. In the third step, the governor is tripped by means of remote operation, etc., so that the rope holding mechanism is actuated. In the fourth step, the balance weight 7 is further lowered to compress the recovery part 12 of the test auxiliary device. The fifth step is to make the driving sheave 5 of the winch rotate towards the direction that the balance weight 7 rises. In the sixth step, a tester or the like confirms that the descent of the elevator car 2 is suppressed even when the drive sheave 5 is in a rotating state by visual inspection or the like. For example, when the main rope 4 on the side of the elevator car 2 is loose, or the driving sheave 5 is idling, it can be considered that the emergency braking device 23 of the elevator car 2 has operated.

According to the above-mentioned present embodiment, by utilizing the restoring force of the restoring force generating mechanism compressed in advance, even if the torque of the hoisting machine and the capability of the control device are not improved, the emergency braking device 23 of the elevator car 2 can be operated. Next, the balance weight 7 is easily lifted by itself. As a result, the operation test of the emergency braking device 23 can be easily performed without using a large hoist or the like. In addition, even when the coefficient of friction between the main rope 4 and the drive sheave 5 increases due to the use of a resin-coated rope or the like as the main rope 4, the balance weight 7 itself can be easily lifted, so that Phenomena such as idling of the driving sheave 5 are likely to occur.

Furthermore, according to the present embodiment, even if it is an existing elevator, it is not necessary to specially improve the counterweight 7 or the like, and the operation of the emergency braking device 23 can be checked. Furthermore, by adjusting the height dimension BH of the adjustment part 11, the stop position of the elevator car 2 can be adjusted to the front of the floor 16 of the elevator hall of the uppermost floor. Therefore, the gap A can be arbitrarily ensured between the upper part of the elevator car 2 and the upper frame of the uppermost doorway 17, and it is also expected that the operation of the driving sheave 5 can be easily confirmed when performing the operation confirmation test of the emergency braking device 23. The effect of the swivel condition and the slack condition of the main sling 4.

Fig. 3 is a diagram showing an elevator test assisting device in a second embodiment of the present invention. As shown in FIG. 3 , the counterweight 7 is accommodated in a counterweight frame 25 , and a buffer receiving member 26 is installed near the center of the bottom of the counterweight frame 25 , and a counterweight buffer 10 is provided in a recess 24 below it. In addition, a test auxiliary device including an adjusting part 11 and a restoring part 12 is provided in a recess 24 on the side of the balance weight buffer 10 . And, like a normal elevator, when the load of the elevator car 2 reaches 1/2 of the rated load, the mass of the counterweight 7 and the mass of the elevator car 2 are balanced.

Here, the restoring portion 12 is set so that its deflection amount reaches δ when a mass corresponding to about 1/2 of the rated load of the elevator car 2 is applied. On the other hand, the height of the adjustment part 11 is adjusted so that the shock absorber 26 reaches the upper surface of the balance weight shock absorber 10 when the deflection amount of the restoration part 12 reaches δ. Therefore, in order to confirm the operation of the emergency braking device 23, when the lower end of the counterweight 7 is lowered to the upper end of the counterweight buffer 10, the mass of the elevator car 2 side and the counterweight will The mass of the 7 sides is balanced.

And, in this embodiment, the restoration part 12 is deformed by the descent of the balance weight 7 to reduce the frictional force between the driving sheave 5 and the main rope 4. In this state, the driving sheave 5 is moved toward Since it rotates in the direction in which the counterweight 7 rises, it is possible to easily cause the driving sheave 5 to spin idle or the like. As a result, the operation confirmation test of the emergency brake device 23 can be easily performed with a small number of components without using a large hoist or the like, and without requiring major changes to the elevator equipment or its structure.

Fig. 4 is a diagram showing an elevator test assisting device in a third embodiment of the present invention. The test auxiliary device in this embodiment is also the same as that of the first embodiment, and it is installed on the buffer 10 for balance and reuse. The difference between it and the first embodiment is that a hole is provided at the center of the base 18. The auxiliary device guide 19 to be inserted into the restoration part 12 passes through this hole, and is inserted into the balance weight buffer guide 9a. And, as the installation method of the test auxiliary device of this embodiment, first, the guide 19 for the auxiliary device is inserted into the buffer guide 9a for the balance weight, and the base 18 is placed on the upper surface of the buffer 10 for the balance weight, and then, The restoration unit 12 is inserted into the base 18 . Therefore, according to this embodiment, like the first embodiment, the installation time of the test auxiliary device can be shortened, and since the buffer 10 for balance weight can also expect a certain amount of deflection δ1, the deflection of the restoring part 12 can be reduced. The amount of curvature δ, that is, it is possible to reduce the size of the restoration unit 12 .

Fig. 5 is a diagram showing an elevator test assisting device in a fourth embodiment of the present invention. This embodiment differs from the above-described embodiments in that an oil-immersed shock absorber is used instead of a spring-type shock absorber as the balance weight shock absorber. And, when installing this test auxiliary device, first, the base 18a to which the guide 11c for the restoration part is fixed is placed on the oil-immersed buffer receiving seat 22 for the counterweight on the upper part of the oil-immersed buffer 20 for the counterweight, and After fixing with the base mounting bolts 27a and 27b, the restoration part 12 is inserted into the restoration part guide 11c.

In addition, in the above-mentioned first to fourth embodiments, the operation confirmation method of the emergency braking device 23 installed on the elevator car 2 side has been described, but the operation confirmation method of the emergency braking device installed on the counterweight 7 side The operation confirmation method is also the same, and the same effect as that of the emergency braking device 23 installed on the elevator car 2 side can be expected by utilizing the energy previously stored in the restoring force generating mechanism.

In addition, in the above-mentioned first to fourth embodiments, the case where the mechanism using the elastic force of the coil spring is used as the restoring force generation mechanism has been described, however, as long as the deformed mechanism has a restoring force, it is It can be used as a resilience generating mechanism.

Claims (9)

1. A test method for an elevator, which confirms that the descent of the elevator car can be suppressed even when the drive sheave of the hoist is in a rotating state, thereby confirming the operation of the emergency braking device of the elevator car, which characterized in that, The drive sheave of the hoist is rotated in a direction in which the counterweight rises while the restoring force generating mechanism is deformed by the fall of the counterweight. 2. the test method of elevator as claimed in claim 1 is characterized in that, The restoring force generating mechanism is arranged below the balance weight, and after the speed governor is tripped, the balancing weight is lowered to compress the restoring force generating mechanism, and then the drive sheave of the winch is moved toward Rotate in the direction in which the counterweight rises. 3. A test method for an elevator, which confirms that the fall of the counterweight can be suppressed even when the driving sheave of the hoist is in a rotating state, thereby confirming the operation of the emergency braking device of the counterweight, characterized in that , The driving sheave of the hoist is rotated in a direction in which the elevator car rises in a state where the restoring force generating mechanism is deformed by the descent of the elevator car. 4. An elevator device comprising: a hoist that drives an elevator car suspended by a main sling and a counterweight; a buffer that is respectively arranged below the elevator car and the counterweight; and an emergency stop A moving device, which responds to the overspeed of the elevator car and acts to prevent the falling of the elevator car, the elevator device is characterized in that, In addition to the shock absorber, a restoring force generating mechanism is provided for causing deformation in advance due to the lowering of the counterweight when checking the operation of the emergency braking device. 5. An elevator device comprising: a hoist that drives an elevator car suspended by a main sling and a counterweight; a buffer that is respectively arranged below the elevator car and the counterweight; and an emergency stop A moving device, which operates in response to the overspeed of the counterweight to prevent the fall of the counterweight, the elevator device is characterized in that, In addition to the shock absorber, a restoring force generating mechanism is provided for causing deformation in advance due to the descent of the elevator car when checking the operation of the emergency braking device. 6. Elevator installation according to claim 4 or 5, characterized in that The restoring force generating mechanism includes: a base placed on the upper surface of the shock absorber; a guide extending in a vertical direction relative to the base; and a restoring portion inserted into the guide. 7. A test auxiliary device, which is installed on the counterweight of an elevator or a buffer arranged below an elevator car, and is used when checking the operation of an emergency brake device, characterized in that, It includes: a base placed on the upper surface of the shock absorber; a guide extending in a vertical direction relative to the base; and a restoration portion inserted into the guide. 8. The test aid of claim 7, wherein: The base has a hole through which the guide passes and is also inserted into the bumper. 9. The test aid of claim 7, wherein: The base, the guide, other guides for insertion into the buffer, and an adjustment portion for adjusting the height of the test auxiliary device are integrally formed.

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