ELEVATOR AND METHOD FOR CONTROLLING ELEVATOR

Abstract

An elevator and an elevator control method are provided. The elevator includes a car (4) and counterweights (10); the elevator includes posts (2), a steel frame structure (13), and a power device (7), where the steel frame structure (13) is fixed on the top of the elevator, and the power device (7) is fixedly installed on the steel frame structure (13); and the counterweights (10) are disposed in the posts (2).

Claims

1. An elevator, comprising a car and counterweights, wherein the elevator comprises posts, a steel frame structure, and a power device, wherein the steel frame structure is fixed on the top of the elevator, and the power device is fixedly installed on the steel frame structure; and the counterweights are disposed in the posts; further, the elevator is provided with a weight balancing device, the weight balancing device comprises guide wheels, steel wire ropes, and the counterweights, and the counterweights are connected to the car through the steel wire ropes and the guide wheels, and used for balancing the car and a part of a weight of a load; and the power device comprises a motor speed reducer equipped with a frequency converter and an encoder, and the frequency converter and the encoder are used for changing a rotational speed of a motor to control an ascending or descending speed of the elevator, wherein two output shafts are disposed on the motor speed reducer, and the two output shafts are the same in rotational speed and opposite in direction; and two sprockets and two chains connected to the two output shafts are disposed in the power device, and the two output shafts are driven by the motor to work simultaneously, so that the two output shafts simultaneously drive the two chains and the two sprockets to drive the car and the counterweights to move up or down.

2. The elevator according to claim 1, wherein the elevator is provided with two posts and two counterweights, and the two counterweights are installed in the two posts respectively.

3. The elevator according to claim 1, wherein the elevator is provided with four posts and four counterweights, and the four counterweights are installed in the four posts respectively.

4. The elevator according to claim 3, wherein the elevator is provided with a hatchway, and a bottom layer of the hatchway of the elevator comprises four working faces, wherein three working faces are each provided with a hatchway guardrail, used for preventing a walker from accidentally entering the hatchway, and one remaining working face is provided with an electric fence lift door, used by a person taking the elevator to get in or out.

5. The elevator according to claim 1, wherein the top of the elevator is provided with a metal protective cover, and the metal protective cover is used for covering the power device, to prevent the power device from being exposed to the sun and rain.

6. The elevator according to claim 1, wherein the bottom of the car is provided with a pressure sensor, an ultrasonic radar sensor, and a camera that are used for monitoring the elevator.

7. A method for controlling an elevator, wherein the elevator comprises: a car and counterweights; and posts, a steel frame structure, and a power device, wherein the steel frame structure is fixed on the top of the elevator, and the power device is fixedly installed on the steel frame structure; and the counterweights are disposed in the posts; further, the elevator is provided with a weight balancing device, the weight balancing device comprises guide wheels, steel wire ropes, and the counterweights, and the counterweights are connected to the car through the steel wire ropes and the guide wheels, and used for balancing the car and a part of a weight of a load; and further, the power device comprises a motor speed reducer equipped with a frequency converter and an encoder, wherein two output shafts are disposed on the motor speed reducer, and two sprockets and two chains connected to the two output shafts are disposed in the power device; the two output shafts are set the same in rotational speed and opposite in direction; and the two output shafts are driven by a motor to work simultaneously, so that the two output shafts of the speed reducer simultaneously drive the two chains and the two sprockets to drive the car and the counterweights to move up or down.

8. The method for controlling an elevator according to claim 7, wherein the counterweights are installed in the posts and hidden by disposing the posts.

9. The method for controlling an elevator according to claim 7, wherein a walker is prevented from accidentally entering a hatchway by disposing the hatchway, hatchway guardrails, and an electric fence lift door.

10. The method for controlling an elevator according to claim 7, wherein a metal protective cover is disposed on the top of the elevator, and the power device is installed in the metal protective cover, to protect the power device.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0033] FIG. 1 is a schematic diagram of an integral structure of a four-post elevator according to Embodiment 1 of the present invention;

[0034] FIG. 2 is a schematic structural diagram of a power device of the four-post elevator according to Embodiment 1 of the present invention;

[0035] FIG. 3 is a schematic diagram of an internal structure of a four-post elevator cut along a diagonal line according to Embodiment 1 of the present invention;

[0036] FIG. 4 is a schematic diagram of an integral structure of a two-post elevator according to Embodiment 2 of the present invention; and

[0037] FIG. 5 is a schematic diagram of a cross-sectional structure of a two-post elevator according to Embodiment 2 of the present invention.

[0038] In the figures: 1, metal protective cover; 2, post; 3, beam; 4, car; 5, hatchway guardrail; 6, electric fence retractable door (unidirectional or bidirectional); 7, power device; 8, chain; 9, sprocket; 10, counterweight; 11, guide wheel; 12, steel wire rope; 13, steel frame structure; 14, simple equipment room.

DETAILED DESCRIPTION

[0039] The following describes the technical solutions of the present invention in detail with reference to accompanying drawings and embodiments.

[0040] In Embodiment 1 shown in FIG. 1, FIG. 2, and FIG. 3, a four-post elevator includes a hatchway, beams (3), a car (4), counterweights (10), four posts (2), a steel frame structure (13), and a power device (7), where the steel frame structure is fixed on the top of the elevator, and the power device is fixedly installed on the steel frame structure; and the counterweights are disposed in the posts.

[0041] The top of the four-post elevator is provided with a metal protective cover (1), and the power device is installed in the metal protective cover, to prevent the power device from being exposed to rain. The power device includes a motor speed reducer (or servo motor) equipped with an encoder and a frequency converter, sprockets (9), a driving shaft, a coupling, and a mounted bearing, and a rotational speed of a motor may be changed through the frequency converter and the encoder to control an ascending or descending speed of the elevator. When the elevator works, the motor on the power device drives two output shafts on the dual-output-shaft speed reducer to work simultaneously. The two output shafts on the speed reducer are the same in rotational speed and opposite in direction. Chains (8) and the sprockets (9) are driven simultaneously through two sprockets installed on the two output shafts of the speed reducer to drive the car (4) and the counterweights (10) installed in the two posts (2) to move up or down. Moreover, the four counterweights 10 are connected to the car through steel wire ropes 12 and guide wheels 11, and may balance the car and a part of a weight of a load, thereby reducing power consumption of the motor. The four counterweights 10 are respectively installed in the four posts 2. To prevent a walker from accidentally entering the hatchway of the elevator, at a bottom layer of the hatchway, three faces are each provided with a hatchway guardrail (5), and one face is provided with an electric fence lift door (6), for a person taking the elevator to get in or out.

[0042] In Embodiment 2 shown in FIG. 4 and FIG. 5, a two-post elevator includes a top simple equipment room (14) with a sheet metal structure, a car (4), counterweights (10), two posts (2), and a power device (7). When the elevator works, a motor on the power device drives two output shafts on a dual-output-shaft speed reducer to work simultaneously.

[0043] The two output shafts on the speed reducer are the same in rotational speed and opposite in direction. Chains 8 and the sprockets 9 are driven simultaneously through two sprockets installed on the two output shafts of the speed reducer to drive the car 4 and the two counterweights 10 to move up or down. The two counterweights 10 are respectively installed in the two posts 2. The bottom of the car is provided with safety facilities such as a pressure sensor, an ultrasonic radar sensor, and a camera, to ensure that the elevator can stop in time when a person or an animal and a foreign matter abnormally enter the elevator at the bottom layer, to avoid damaging the person or animal, and the elevator.

[0044] A method for controlling an elevator is provided, where the elevator includes: a car and counterweights; and posts, a steel frame structure, and a power device, where the steel frame structure is fixed on the top of the elevator, and the power device is fixedly installed on the steel frame structure; and the counterweights are disposed in the posts;

[0045] further, the elevator is provided with a weight balancing device, the weight balancing device includes guide wheels, steel wire ropes, and the counterweights, and the counterweights are connected to the car through the steel wire ropes and the guide wheels, and used for balancing the car and a part of a weight of a load; and

[0046] further, the power device includes a motor speed reducer (or servo motor) equipped with a frequency converter and an encoder, where two output shafts are disposed on the motor speed reducer, and two sprockets and two chains connected to the two output shafts are disposed in the power device; the two output shafts are set the same in rotational speed and opposite in direction; and the two output shafts are driven by a motor to work simultaneously, so that the two output shafts of the speed reducer simultaneously drive the two chains and the two sprockets to drive the car and the counterweights to move up or down.

[0047] Preferably, the counterweights are installed in the posts and hidden by disposing the posts (or circular posts or square posts).

[0048] Preferably, a walker is prevented from accidentally entering a hatchway by disposing the hatchway, hatchway guardrails, and an electric fence lift door.

[0049] Preferably, a metal protective cover is disposed on the top of the elevator, and the power device is installed in the metal protective cover, to protect the power device.

[0050] The foregoing descriptions involve only some specific embodiments of the present invention, and each replacement or improvement made by any person skilled in the art based on the spirit of the present invention should fall within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the claims.