KR101564880B1

KR101564880B1 - Landing level holding apparatus for elevator

Info

Publication number: KR101564880B1
Application number: KR1020150067424A
Authority: KR
Inventors: 이창근
Original assignee: 이창근
Priority date: 2015-05-14
Filing date: 2015-05-14
Publication date: 2015-10-30

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an elevator level holding apparatus for an elevator, and more particularly to an elevator level holding apparatus for elevators in which a platform of a floor and a bottom surface of a elevator car are kept parallel when the elevator car stops on each floor .
Particularly, the present invention relates to an elevator level holding apparatus for an elevator that smoothly performs a conception operation and a concealment releasing operation, and minimizes the shaking even when the elevation car is unloaded while the elevation is canceled.

Description

[0001] The present invention relates to elevation level holding apparatuses,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an elevation level maintenance apparatus for an elevator, and more particularly to an elevation level maintenance apparatus for an elevator in which a platform of a floor and a floor of a lift car are kept parallel when the elevator car stops on each floor .

Particularly, the present invention relates to an elevator level holding apparatus for an elevator that smoothly performs a conception operation and a concealment releasing operation, and minimizes the shaking even when the elevation car is unloaded while the elevation is canceled.

Generally, an elevator system is installed in a high-rise building or a cargo transportation route, and is used to transport a passenger or cargo between a low-rise building and a high-rise building, and is installed so that the elevation car rises and falls along an elevator hoistway.

In this elevator system, when the elevator car arrives at each floor, the elevator car is stopped at a predetermined position of each floor using a sensor so that the floor of the elevator car and the platform (or floor bottom) Is applied.

However, even if the elevator car is stopped at the right position of each floor by the elevation level control technique, when the passenger is aboard a large number of passengers or loads a heavy cargo, the elevator car sinks due to elongation of the rope or the like.

Especially, in the case of the cargo elevator, when the cargo moves into the elevator car, a step is generated between the elevator car and the platform by the stretching of the rope or the like, so that it is difficult to keep the cargo horizontally.

Korean Unexamined Patent Publication No. 1997-0026871 and Korean Unexamined Patent Publication No. 1997-0026859 and the like disclose a concealment level holding device and a locking operation is performed so that the elevator car does not move when the elevator car reaches each floor.

For example, as shown in FIG. 1, Korean Patent Laid-Open Publication No. 1997-0026871 has lugs 32 and 48 on the elevator car and the elevator shaft, respectively, and lugs 32 and 48 are fastened by the bolts 35 of the elevator car. The locking movement was caused by penetrating completely.

Therefore, after the elevating car stopped at the right position of each layer, the bolts 35 were moved to the hoistway side and inserted into the lugs 32 and 48, and the elevating car was not moved thereafter and maintained the elevation level.

However, if the load is significantly increased by loading passengers or cargo in the elevator car, the frictional force between the bolts 35 and the lugs 32, 48 becomes too large to unlock the bolts 35 in the opposite direction. It is difficult to move to the other side.

Further, when the bolt 35 is operated by using a hydraulic cylinder or the like, a larger force can be applied to the bolt 35. However, even in this case, unlocking is difficult, and even if possible, There is a problem to lose.

Further, when the passenger and the cargo are loaded in a state in which the conception level is fixed, the bolt 35 is pulled in the opposite direction and the force supported by the bolt 35 instantaneously disappears at the time of freeing the conception, There is a problem of clattering.

Accordingly, there is a problem in safety of passengers in the past, and there is a great possibility that the cargo is damaged due to the impact or the cargo is collapsed, leading to a secondary accident.

These problems are caused by the fact that the fixing rod such as the bolt 35 is completely inserted into the fitting hole of the lugs 32 and 48. In particular, The problem is serious at the moment of getting out.

Korea Patent Publication No. 1997-0026871 Korean Patent Publication No. 1997-0026859

SUMMARY OF THE INVENTION Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and an object of the present invention is to provide an elevating level maintenance apparatus for an elevator that maintains a platform of a floor and a floor of a lift car in parallel when the elevator car stops on each floor.

Particularly, the present invention intends to provide an elevator level holding apparatus for an elevator which smoothly performs a elevating operation during stopping and a elevating and lowering operation in elevating and lowering, and minimizes the shaking even when the elevation car is unloaded while the elevation car is unloaded.

To this end, the elevation level maintenance apparatus for an elevator according to the present invention is provided with an elevator elevator car, comprising: a first level elevator having a cylinder and a fixed rod reciprocating horizontally by the cylinder; A second level fixing device provided in the elevator hoistway, wherein the elevation car stops at a predetermined position and engages with the fixing rod when the elevation car is concealed; And a controller controlling the cylinder to control the drawing or drawing of the stationary rod, wherein an end of the stationary rod is formed with a slanting projection having a smaller diameter toward an end portion thereof, And the inclined projections engage with the inclined projections so that when the elevator car stops on each layer, the inclined projections come into surface contact with the inclined grooves and the first level fixture is fixed to the second level fixture, .

At this time, the inclined projections of the first level fixing device have inclined surfaces which are symmetrical to the upper and lower sides with respect to the center, respectively, so that the inclined grooves of the second level fixing device form a & It is preferable to form the " > " -shaped groove having the inclined surfaces symmetrical to the upper and lower sides.

It is preferable that an angle between the center of the slant projection and the slant face of the slant projection is 30 to 60 degrees.

The second level fixture may include a fixed block having the inclined grooves on the front surface thereof; And a reinforcing block inserted into the fixed block, the reinforcing block supporting the bottom portion of the inclined groove and the top and bottom portions of the fixed block.

In the present invention as described above, the first level fixture and the second level fixture provided on the elevator car and the hoistway are coupled in a surface contact manner by a rod and a groove having an inclined shape.

Therefore, according to the present invention, the elevating and lowering car can maintain the level of the landing level at the time of stopping on each layer, and the landing operation and the landing cancellation operation are smoothly performed.

In addition, the tilt-like rod comes into surface contact with the inclined grooves to release the sliding movement while maintaining the state of providing the supporting force, so that the shaking of the elevator car is minimized.

1 is a front sectional view showing a concealment level maintenance apparatus according to the prior art.
2 is a schematic block diagram showing an elevator system including an elevation level maintenance apparatus for an elevator according to the present invention.
3 is a configuration diagram showing an elevation level maintenance apparatus for an elevator according to the present invention.
4 is a view showing a fixing rod of an elevation level holding device for an elevator according to the present invention.
5 is an operational state diagram of the elevation level maintenance apparatus for an elevator according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an elevation level maintenance apparatus for an elevator according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

As shown in FIG. 2, the elevator system includes, for example, an elevator car 100 such as a passenger or a freight for the elevator HW formed in a vertical direction, and the elevator car 100 includes a hoistway HW It goes up and down between low and high.

The elevator car 100 usually includes an upper frame 111_T and a lower frame 111_B and a guide shoe or the like is provided on the upper frame 111_T and the lower frame 111_B, And is reinforced with a side brace 112 or the like.

A door D such as a left / right opening / closing type or a vertical opening / closing type door is provided in the direction toward each floor floor FL. The door D is opened / closed by the motor driving unit 120. The motor driving unit 120 is controlled by the controller 231.

The elevation level holding apparatus 200 for an elevator according to the present invention is applied to the elevator system as described above. When the elevator car 100 arrives at each floor, the floor level of the elevator car 100 and the platform Bottom surface) in parallel with each other.

To this end, the present invention includes a first level fixing device 210 installed on the elevator elevator car 100 and a second level fixing device 220 installed on the elevator elevator car HW, and the first level fixing device 210 And is coupled to the second level fixture 220 to maintain the implantation level.

In this case, the first level fixing device 210 may be installed at a lower end or an upper end of the elevator car 100, or may be installed at an intermediate portion of the elevator car 100 if only an operating space is provided. In addition, two or more pieces may be provided for each surface of the elevating car 100 and operated simultaneously.

2, a first level fixing device 210 is installed at the lower end of the elevator car 100, and a plurality of the first level fixing devices 210 are horizontally installed to face the front side and the rear side, and connected to the controller 231 ) As an example.

When the installation position of the first level fixing device 210 is determined, the installation position of the second level fixing device 220 is also determined, and the second level fixing device 220 determines the installation position of the first level fixing device 210, The same number and the same height as the period 210 are provided.

The emergency manual handle 232 provided at the upper portion of the elevator car 100 is manually operated to manually operate the cylinder 211 of the first level fixing device 210 in an emergency such as a power failure or a failure, do.

3, the first level fixing device 210 is fixedly mounted on the elevator elevator car 100 and is supported by the cylinder 211 and the cylinder 211 in the horizontal direction, (Not shown).

The second level fixing device 220 is provided in the elevator hoistway HW and is fixed to the wall of the hoistway HW (WL of FIG. 2), the platform (PF of FIG. 3) Is configured to stop at a predetermined position of each layer so as to be coupled with the fixing rod 212 at the time of implantation.

The second level fixture 220 may include a fixed block 221 having an inclined groove 221a at a front portion thereof and a lower portion of the inclined groove 221a inserted into the fixed block 221, And a reinforcing block 222 for supporting the top and bottom portions of the bottom plate 221.

The controller 231 controls the cylinder 211 to control the insertion or withdrawal of the stationary rod 212. When a hydraulic or pneumatic cylinder 211 is used, the cylinder 211 is connected to the cylinder 211 via the pressure hose 211a. And controls the supplied pressure.

The fixing rod 212 of the first level fixing device 210 is assembled through a guide G fixed to a lower portion of the elevating car 100 so that the horizontal reciprocating motion is guided. At the same time, Thereby supporting the load exerted on the arm 212.

In addition, a drawing sensor S1 for detecting the drawing state of the fixing rod 212 is provided in a direction in which the fixing rod 212 is drawn out, a drawing sensor S2 is provided at the rear of the fixing rod 212, And S2 transmit a sensing signal to the controller 231. [

Therefore, after the elevator car 100 arrives at the target floor and stops at the correct position, the controller 231 pulls the fixed rod 212 of the first level fixture 210 out of the second level fixture 210, (220) and the elevation level of the elevator car (100) is maintained and fixed.

After that, after the passenger is loaded on the passenger or cargo in the elevator car 100, the controller 231 pulls the fixed rod 212 of the first level fixing device 210 into the cylinder 211 to release the engagement The elevator car 100 moves to the next floor.

Particularly, the present invention is different from the conventional art in that the landing operation at the time of stopping and the landing unlocking operation at the time of landing and descent are smoothly performed, and the shaking is minimized even if the lift of the landing car 100 is changed while the landing is canceled.

To this end, the end of the fixing rod 212 constituting the first level fixing device 210 is provided with a slanting protrusion 212a whose diameter decreases toward the end portion. The second level fixing device 220 is provided with a slope And an inclined groove 221a into which the projection 212a engages is formed.

Therefore, when the leveling level is fixed, the first level fixing device 210 is brought into contact with the second level fixing device 220 in such a manner that the slanting protrusion 212a of the fixing rod 212 is strongly in surface contact with the slanting groove 221a of the second level fixing device 220 And is fixed to the level fixture 220.

The present invention's surface contact leveling level fixing technique is quite different from the prior art but provides a superior effect that allows the bolt 35 to pass completely through the fitting hole of the lugs 32 and 48 There is a big difference from what is configured.

When the slanting protrusion 212a of the first level fixing device 210 is configured to be in surface contact with the slanting groove 221a of the second level fixing device 220 as in the present invention, Is inserted into the inclined grooves (221a) of the level fixing device (220), collision noise is prevented during insertion.

Even if the load is increased by loading passengers or cargo in the elevator car 100, the fixing rod 212 slidably slides out of the inclined grooves 221a when the fixing rod 212 is removed to release the leveling level No noise and no malfunction.

That is, conventionally, it is difficult to unlock the bolt 35 in the opposite direction due to the large frictional force between the bolt 35 and the lugs 32, 48 due to the load of the elevator car, and the elevator car 100 moves to the next floor However, the present invention solves this problem.

The present invention is not limited to dismounting the fixed rod 212 at a time in a discrete manner while the fixed rod 212 is pulled out of the inclined groove 221a but may be continuously and continuously maintained in a state in which the inclined projection 212a is supported by the inclined groove 221a Thereby preventing the raising and lowering car 100 from jolting and swaying.

4, the fixed rod 212 of the present invention is shown as an example. 4 (a) and 4 (b), the inclined projections 212a of the first level fixing device 210 preferably have inclined surfaces symmetrical to the upper and lower sides with respect to the center O, As shown in Fig.

The inclined grooves 221a of the second level fixture 220 in which the inclined projections 212a of the fixed rod 212 are engaged with each other in a surface contact manner also have inclined surfaces symmetrical to the upper and lower sides with respect to the center, '>' Forms a groove of shape.

However, the inclined projection 212a of the first level fixing device 210 may have a circular cross-section as shown in FIG. 4 (a) and a rectangular cross-section as shown in FIG. 4 (b) Various shapes can be applied simply by having a slope to achieve the purpose.

As shown in the drawing, the inclined projection 212a of the fixed rod 212 preferably has an inclination angle of 30 to 60 degrees between the center O of the fixed rod 212 and the inclined surface of the inclined projection 212a Do.

If the inclined surface angle? Is less than 30, the surface contact surface area between the inclined projection 212a and the inclined groove 221a becomes small and the supporting force is insufficient. On the other hand, if the inclination angle? Is more than 60, the supporting force is also insufficient due to the slip phenomenon during surface contact, and the abutting level is released somewhat abruptly, so that the inclined surface is preferably 30 to 60 degrees.

The diameter D of the fixed rod 212 and the protruding length L of the inclined projection 212a (the length of the base of the inclined surface) can be adjusted in accordance with the rated load of the elevator car 100, The diameter D of the fixing rod 212 and the protruding length L of the slanting protrusion 212a increase (or become longer) as the loading load of the main body 100 increases.

Hereinafter, the operation state of the elevation level maintenance apparatus for elevators as described above will be described.

5 (a), when the elevator elevator car 100 arrives at a target floor and stops at a predetermined position, the controller 231 controls the cylinder 211 to control the elevator elevator car 210 In the horizontal direction.

Therefore, when the fixed rod 212 is drawn out to the end in the horizontal direction so that the inclined projection 212a of the fixed rod 212 is fitted into the inclined groove 221a of the second level fixing device 220 and the inclined projection 212a And supports the elevating car 100 with strong force while being in surface contact with the inclined grooves 221a.

That is, the leveling level is maintained by the surface contact between the inclined projections 212a and the inclined grooves 221a. Even if a passenger is loaded on or loaded on the elevator car 100, the elevator car 100 descends downward, Prevent occurrence and maintain parallelism.

5 (b), the controller 231 controls the cylinder 211 to move to the next layer by pressing an operation button inside the elevator car 100, thereby moving the fixed rod 212 of the first level fixing device 210 ) In the horizontal direction.

At this time, the controller 231 gradually removes the fixed rod 212 from the inclined groove 221a through the linear control to prevent the elevator car 100 from being abruptly lowered. When the fixed rod 212 is fixed by the load of the elevator car 100, A force is applied to the rod 212 in the downward direction.

Therefore, even while the fusing level is released, the fixing rod 212 maintains the engagement in a state slightly deviated from the inclined grooves 221a of the second level fixing device 220, and continues to receive the supporting force.

5 (c), when the fixing rod 212 of the first level fixing device 210 is continuously drawn out in the horizontal direction by the controller 231, until the fixing rod 212 completely comes out The operation as shown in FIG. 5 (b) is continued.

Accordingly, the present invention can separate the fixed rod 212 from the conventional art shown in FIG. 1, and also allows the fixed rod 212 to move freely without giving a load to the cylinder 211.

Even when the elevating rope is extended by the load of the elevating car 100 when the elevating level is released, the fixing rod 212 is held in the inclined groove 221a of the second level fixing device 220, (100) is prevented from abruptly sinking.

The specific embodiments of the present invention have been described above. It is to be understood, however, that the scope and spirit of the present invention is not limited to these specific embodiments, and that various modifications and changes may be made without departing from the spirit of the present invention. If you have, you will understand.

Therefore, it should be understood that the above-described embodiments are provided so that those skilled in the art can fully understand the scope of the present invention. Therefore, it should be understood that the embodiments are to be considered in all respects as illustrative and not restrictive, The invention is only defined by the scope of the claims.

100: Lift Car
210: first level fixing device
211: Cylinder
212: Fixed rod
212a: oblique projection
220: Second level fixing device
221: fixed block
221a: inclined groove
222: reinforcing block
231:
232: Emergency manual handle
HW: hoistway
FL: floor (floor)
PF: platform

Claims

A first level fixing device 210 provided in the elevator car 100 and having a cylinder 211 and a fixed rod 212 reciprocating horizontally by the cylinder 211;
A second level fixture 220 provided on the elevator hoistway HW and coupled to the fixed rod 212 when the elevator car 100 stops at a predetermined position and is conceived; And
And a controller (231) for controlling the cylinder (211) to control the entry or withdrawal of the fixed rod (212)
A slanting protrusion 212a is formed at an end of the fixed rod 212 so that the diameter of the slanting protrusion 212a decreases toward the end of the fixed rod 212. The slanting protrusion 212a is engaged with the slanting groove 221a ) Is formed,
When the elevator car 100 stops on each floor, the slanting protrusion 212a comes into surface contact with the slanting groove 221a and the first level fixing device 210 is fixed to the second level fixing device 220 The implantation level is maintained,
The oblique protrusions 212a of the first level fixture 210 have a slope that is symmetrical to the upper and lower sides with respect to the center O to form protrusions having a shape of ' 220 have an inclined surface symmetrical to the upper and lower sides with respect to the center O to form a groove having a ">" shape,
The angle? Between the center O of the slanting projection 212a and the inclined plane of the slanting projection 212a is 30 to 60 占,
And an emergency manual handle 232 provided in the elevator car 100 and forcibly releasing the fixed level fixing state by manually actuating the cylinder 211 of the first level fixing device 210 in an emergency And the elevation level holding device for the elevator.

delete

The method according to claim 1,
The second level fixture 220 may include:
A fixing block 221 having the inclined groove 221a on the front surface thereof; And
And a reinforcing block (222) inserted into the fixed block (221) and supporting the lowest portion of the inclined groove (221a) and the upper and lower surfaces of the fixed block (221) A fusing level maintenance device.