CN111573471A - A device for stopping an elevator car - Google Patents

Abstract

The invention discloses a device for stopping a lift car of an elevator, which relates to the field of stopping devices and adopts the technical scheme that the device comprises a bottom plate, a stand column and a driving rod; the bottom plate is horizontally positioned at the bottom of the well, a threaded through hole is formed in the bottom plate, external threads matched with the threaded through hole are formed in the outer portion of the upright column, and an internal spline hole is formed in the upright column; the lower extreme of screw thread through-hole corresponds the shrink hole that is equipped with of stand, the vertical actuating lever that is equipped with in the shrink hole, the actuating lever be equipped with the external splines that the internal spline hole was equipped with, can be when needs use the stand, upwards stretch out well ground with the stand through servo motor, in retrieving the shrink hole with the stand through the actuating lever when not needing the stand, it is higher to well inner space utilization.

Description

A device for stopping an elevator car

technical field

The invention relates to a device for stopping an elevator car, and mainly relates to the field of stopping devices.

Background technique

In the prior art, in order to meet the safety maintenance space of the pit, a stop device needs to be installed in the pit of the elevator shaft to prevent the car from squatting to the bottom. Usually the stop device is located directly below the car, so the depth of the pit needs to be deep enough to have enough space to install the stop device. However, with the popularity of elevators, more and more low-rise buildings have begun to install elevators. During the renovation of the old community, elevators need to be installed for the old buildings, and the depth of the pit should not be too deep, otherwise the cables buried in the ground will be dug. Therefore, there is an urgent need to develop a stopping device that can meet the requirements of shallow pits and will not block the bottom of the car when the car is running normally.

SUMMARY OF THE INVENTION

In view of the above deficiencies of the prior art, the present invention proposes a device for stopping the elevator car, which can push the column upwards out of the hoistway ground through the servo motor when the column needs to be used, and push the column up through the drive rod when the column is not needed. When retracted into the shrinkage hole, the space provided by the column to provide support is changed from the original fixed long-term use to the temporary use when needed, which has a higher utilization rate of the space in the hoistway.

In order to achieve the above purpose, the technical scheme of the present invention is: comprising a bottom plate, a column and a drive rod; the bottom plate is horizontally located at the bottom of the hoistway, the bottom plate is provided with threaded through holes, and the outside of the column is provided with the An external thread adapted to a threaded through hole, an internal spline hole is arranged in the column; a shrinking hole is arranged at the lower end of the threaded through hole corresponding to the column, and a driving rod is vertically arranged in the shrinking hole, so The drive rod is provided with external splines arranged with the internal spline holes, the bottom of the shrinkage hole is provided with a servo motor, and the output end of the servo motor is coaxially fixed with the lower end of the drive rod.

The technical principle and beneficial effect of the present invention are as follows:

The column is threaded with the bottom plate, so when the column is rotated, the column will move up and down relative to the bottom plate, and there is an inner spline hole in the column, and the inner spline hole is matched with the spline of the drive rod. The column will be driven to rotate together, and the column can also slide axially relative to the driving rod, so when the driving rod is rotated, the column can be driven to slide up or down.

Through the above scheme, when the vertical column needs to be used, the vertical column can be extended upwards out of the hoistway ground through the servo motor, and when the vertical column is not needed, the vertical column can be retracted into the shrinkage hole by the driving rod, and the space provided by the vertical column can be used by the original fixed for a long time. It can be used temporarily when needed, and the space utilization rate in the hoistway is higher.

Preferably, the upper end of the column is provided with a buffer head, which is convenient to improve the supporting and buffering effect on the car.

Preferably, the upper end of the inner spline hole is provided with a counterbore, the buffer head includes a sliding rod, a support plate and a spring, the lower end of the sliding rod is slidably fitted into the inner spline hole, and the spring is fitted to the inner spline hole. In the counterbore, the upper and lower ends of the spring abut against the support plate and the bottom of the counterbore respectively, the support plate is horizontally fixed to the upper end of the sliding rod, and the spring can provide buffering for the support plate As a result, it is more convenient to guide the up and down sliding of the support plate through the sliding bar.

Preferably, a rubber pad is provided on the upper surface of the support plate, and the rubber pad is used to improve the buffering effect and avoid rigid contact with the bottom of the car.

Preferably, a cylinder is embedded in the side wall of the shrinking hole, and a more closed and stable shrinking space is provided through the cylinder.

Preferably, the upper side wall of the inner spline hole is provided with an air pressure balance hole, and the key teeth of the outer spline corresponding to the inner spline hole have a number of missing healthy teeth, and the missing healthy teeth form a connected inner spline The channel of the key hole and the shrink hole, the air pressure of the shrink hole and the inner spline hole will change during the expansion and contraction of the column. The hole can keep the inner spline hole and the shrink hole in communication with the external air pressure, which is more convenient for the telescopic action of the column. At the same time, since the internal air pressure enters and exits through a hole, when the column is impacted, the internal gas can also be lifted. to a certain buffering effect.

Description of drawings

In order to illustrate the embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings used in the description of the embodiments. Obviously, the drawings in the following description are only for the present invention. For two of the drawings, for those of ordinary skill in the art, other drawings can also be obtained from these drawings without any creative effort.

1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is a cross-sectional view of the cooperation between a column and a driving rod according to an embodiment of the present invention.

Among them, the bottom plate 1, the driving rod 2, the column 3, the missing teeth 4, the sliding rod 5, the rubber pad 6, the supporting plate 7, the spring 8, the air pressure balance hole 9, the inner spline hole 10, the shrinking hole 11, the servo motor 12 .

Detailed ways

The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only preferred embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

Example

As shown in FIG. 1 , the embodiment of the present invention includes a base plate 1 , a column 3 and a driving rod 2 .

The bottom plate 1 is horizontally located at the bottom of the hoistway, the bottom plate 1 is provided with a threaded through hole, the outside of the column 3 is provided with an external thread adapted to the threaded through hole, and the column 3 is provided with an inner thread. Spline hole 10.

The lower end of the threaded through hole is provided with a shrinking hole 11 corresponding to the column 3 , and a cylinder is embedded in the side wall of the shrinking hole 11 , and a more closed and stable shrinking space is provided through the cylinder. A drive rod 2 is vertically arranged in the shrink hole 11 , and the drive rod 2 is provided with an external spline arranged with the internal spline hole 10 , and a servo motor 12 is provided at the bottom of the shrink hole 11 . The output end of the servo motor 12 is coaxially fixed with the lower end of the drive rod 2 .

The upper end of the upright column 3 is provided with a buffer head, which is convenient to improve the supporting and buffering effect on the car. The upper end of the inner spline hole 10 is provided with a counterbore. The buffer head includes a sliding rod 5, a support plate 7 and a spring 8. The lower end of the sliding rod 5 is slidably fitted into the inner spline hole 10. The spring 8 is fitted in the counterbore, and the upper and lower ends of the spring 8 abut against the support plate 7 and the bottom of the counterbore respectively, and the support plate 7 is horizontally fixed to the upper end of the sliding rod 5 . The spring 8 can provide a buffer effect for the support plate 7 , and the sliding rod 5 is more convenient to guide the support plate 7 to slide up and down. The upper surface of the support plate 7 is provided with a rubber pad 6, and the rubber pad 6 improves the buffering effect and avoids rigid contact with the bottom of the car.

The upper side wall of the inner spline hole 10 is provided with an air pressure balance hole 9, and the key teeth of the outer spline corresponding to the inner spline hole 10 have a number of missing teeth 4, and the missing teeth 4 are connected. The passage of the inner spline hole 10 and the shrink hole, the air pressure of the shrink hole and the inner spline hole 10 will change during the expansion and contraction of the column 3. By missing the teeth 4, the gap between the inner spline hole 10 and the shrink hole can be made. The air pressure is kept connected. Through the air pressure balance hole 9, the inner spline hole 10 and the shrinking hole 11 can be kept in communication with the external air pressure, which is more convenient for the telescopic action of the column 3. 3 When receiving an impact, the internal gas can also play a certain buffering role.

The upright column 3 is screwed with the bottom plate 1, so when the upright column 3 is rotated, the upright column 3 will move up and down relative to the bottom plate 1, and the upright column 3 is provided with an inner spline hole 10, and the inner spline hole 10 is splined with the driving rod 2, so When the drive rod 2 is rotated by the servo motor 12, the column 3 is driven to rotate together, and the column 3 can also slide axially relative to the drive rod 2, so when the drive rod 2 is rotated, the column 3 can be driven to slide up or down.

In this solution, the motor only provides a driving function for the upright column 3, but does not play a supporting role, and the support is all provided by the bottom plate 1.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the scope of the present invention. within the scope of protection.

Claims (6)

1. A device for stopping an elevator car is characterized by comprising a bottom plate (1), a stand column (3) and a driving rod (2);

the bottom plate (1) is horizontally positioned at the bottom of the hoistway, a threaded through hole is formed in the bottom plate (1), external threads matched with the threaded through hole are formed in the outer portion of the upright post (3), and an internal spline hole (10) is formed in the upright post (3);

the lower end of the threaded through hole corresponds to a shrinkage hole (11) formed in the upright column (3), a driving rod (2) is vertically arranged in the shrinkage hole (11), an external spline matched with the internal spline hole (10) is arranged on the driving rod (2), a servo motor (12) is arranged at the bottom of the shrinkage hole (11), and the output end of the servo motor (12) is coaxially fixed with the lower end of the driving rod (2).

2. A device for stopping an elevator car as claimed in claim 1, wherein: the upper end of the upright post (3) is provided with a buffer head.

3. A device for stopping an elevator car according to claim 2, characterized in that: the upper end of the inner spline hole (10) is provided with a counter bore, the buffer head comprises a sliding rod (5), a supporting plate (7) and a spring (8), the lower end of the sliding rod (5) is in sliding fit with the inner spline hole (10), the spring (8) is matched with the counter bore, the upper end and the lower end of the spring (8) are respectively abutted to the bottom of the supporting plate (7) and the counter bore, and the supporting plate (7) is horizontally fixed at the upper end of the sliding rod (5).

4. A device for stopping an elevator car according to claim 3, characterized in that: the upper surface of the supporting plate (7) is provided with a rubber pad (6).

5. A device for stopping an elevator car as claimed in claim 1, wherein: a cylinder is embedded in the side wall of the contraction hole (11).

6. A device for stopping an elevator car as claimed in claim 1, wherein: the side wall of the upper portion of the inner spline hole (10) is provided with an air pressure balance hole (9), a plurality of missing healthy teeth (4) are arranged on the key teeth of the outer spline corresponding to the inner spline hole (10), and the missing healthy teeth (4) form a channel for communicating the inner spline hole (10) with the retraction hole.

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