CN110642125A

CN110642125A - Cam driving system for elevator

Info

Publication number: CN110642125A
Application number: CN201910921213.0A
Authority: CN
Inventors: 薄国荣; 沈娟娟; 施云秋; 钱玉良; 薄彩红
Original assignee: Belfast Elevator Co Ltd
Current assignee: Belfast Elevator Co Ltd
Priority date: 2019-09-27
Filing date: 2019-09-27
Publication date: 2020-01-03
Anticipated expiration: 2039-09-27
Also published as: CN110642125B

Abstract

The invention discloses a cam driving system for an elevator, which comprises a cam car, a driving mechanism and four car positioning blocks, wherein one side of the cam car is protruded, the protruded part forms a slide way, the driving mechanism is positioned on one side of the cam car slide way, the driving mechanism comprises a positioning mechanism, an ejection device, a moving shaft and a rotating wheel, one side of the ejection device is connected with the moving shaft, the other side of the ejection device is connected with the positioning mechanism, the rotating wheel is arranged on the moving shaft on one side of the cam car slide way, the driving mechanism enables the moving shaft to move left and right under the combined action of a motor and the ejection device, and the rotating wheel is contacted with the cam car to enable the cam car to move up and down. The cam-type elevator car has the advantages that the cam-type elevator car is suitable for small-sized household double-deck elevators, the cam-type elevator car is simple in structure, the shape of the car is in a cam shape, and the cam car can move up and down under the action of force generated between the rotating wheel and the cam car through the left-right movement of the moving shaft in the driving mechanism.

Description

Cam driving system for elevator

Technical Field

The present invention relates to a drive system, and more particularly to a cam drive system for an elevator.

Background

The drive system of an elevator has various drive modes such as traction drive, forced drive, drum drive, hydraulic drive and the like. The most used at present is traction drive, which consists of a traction machine, a steel wire rope and the like, wherein one end of the traction steel wire rope positioned in a traction groove is connected with a lift car, and the other end is connected with a counterweight. When the motor rotates, the car and the counterweight of the elevator are driven to move up and down along the track through the friction force (commonly called traction force) between the rope groove of the traction sheave and the traction steel wire rope. The traction drive structure is complex, if the requirement of the elevator with the machine room on the structure of the house is high, the top of the house has enough space for arranging the machine room, and if the elevator without the machine room has no high requirement on the space, the cost is high. The traction driving mode has the characteristics of safety, reliability and almost unlimited lifting height, the traction driving cost is high in the current household elevator with only two-layer height, the steel wire rope is easy to loosen or break, and the complex traction driving mode is not needed.

Disclosure of Invention

The present invention has been made to solve the above-mentioned problems occurring in the prior art, and the present invention provides a cam driving system for an elevator.

The technical scheme adopted by the invention is as follows:

the utility model provides a cam drive system for elevator, cam drive system includes cam car, actuating mechanism, four car locating pieces, cam car one side is protruding, and the bulge forms the slide, and actuating mechanism is located one side of cam car slide, actuating mechanism includes positioning mechanism, pops out device, motion axle and runner, pop out device one side and be connected with the motion axle, the opposite side is connected with positioning mechanism, and the runner is installed on the motion axle of cam car slide one side, and actuating mechanism makes motion axle side-to-side movement under motor and the device combined action that pops out to runner and cam car contact make cam car along slide up-and-down motion.

Furthermore, a brush layer, a rubber layer and a positioning mechanism positioning block are sequentially arranged on two sides of the moving shaft from inside to outside respectively, and the brush layer, the rubber layer and the positioning mechanism positioning block form a positioning mechanism. The rubber layer and the hairbrush layer can increase the friction force between the moving shaft and the hairbrush layer and the rubber layer, so that the moving speed of the moving shaft is reduced under the action of the motor, the excessive force of the moving shaft is avoided, the excessive force between the rotating wheel and the cam car cannot be generated at one stroke, and the upward movement of the cam car is gentle.

Furthermore, the popping device comprises two springs and a connecting plate, one end of each spring is fixedly connected with the positioning mechanism positioning block, the other end of each spring is fixedly connected with the connecting plate, the connecting plate penetrates through the moving shaft and is fixed with the moving shaft, and the springs are further provided with an electric coupling lock catch. The connecting plate and the moving shaft are fixed together, the moving shaft drives the connecting plate to move leftwards under the action of the motor, the distance of leftward movement of the moving shaft is limited due to the limited stretched length of the spring, and when the spring is stretched to the limit position, the spring is locked by the lock catch, so that the spring is fixed at the stretched position. When the motion shaft needs to move rightwards, the lock catch is unlocked, the spring is reset, and the connecting plate and the motion shaft move rightwards.

Further, the car locating piece is installed on the well, and two car locating pieces are a set of, and four car locating pieces can divide into two sets ofly, and two sets of car locating pieces are located the left and right sides of cam car respectively. The car locating piece can fix the position of cam car.

Furthermore, the rotating wheel is connected with one end of the moving shaft through a rotating shaft. The runner can rotate under the effect of pivot, and when the motion axis moved left, the runner contacted with the cam car, the runner anticlockwise rotation, the upward motion of cam car. When the moving shaft moves rightwards, the rotating wheel is contacted with the cam car, the rotating wheel rotates clockwise, and the cam car moves downwards.

Further, cam car's bottom installation spring mechanism, spring mechanism includes base and supporting spring, the base is cylindric, the pedestal mounting is on the pit, supporting spring one end winding is on the base. The spring mechanism can have an upward acting force when the cam car moves upwards, and can play a role in buffering when the cam car moves downwards, so that the cam car is prevented from being weightless due to overlarge downward force of the cam car.

Further, the hairbrush of the hairbrush layer is soft hair. The friction force added by the soft hair is not too large, and the moving shaft cannot move left and right easily due to the excessive friction force.

The invention has the following beneficial effects: the cam-type elevator car is suitable for a small household double-layer elevator, the cam-type elevator car is simple in structure, the car is in a cam shape, the moving shaft in the driving mechanism moves left and right, and the cam car moves up and down under the action of force generated between the rotating wheel and the cam car.

Drawings

FIG. 1 is a schematic diagram of the structure of the apparatus of the present invention;

fig. 2 is an enlarged view of the positioning mechanism of fig. 1.

In the figure, 1 is a moving shaft, 2 is a positioning mechanism positioning block, 3 is a spring, 4 is a connecting plate, 5 is a rotating wheel, 6 is a base, 7 is a supporting spring, 8 is a car positioning block, 9 is a rotating shaft, 10 is a rubber layer, 11 is a brush layer, and 12 is a cam car.

Detailed Description

The invention is explained in detail below with reference to the figures and examples.

Example (b): as shown in fig. 1 and 2, a cam driving system for an elevator, the cam driving system includes a cam car 12, a driving mechanism, and four car positioning blocks 8, one side of the cam car 12 is convex, the convex part forms a slide way, the driving mechanism is located on one side of the slide way of the cam car 12, the driving mechanism includes a positioning mechanism, a pop-up device, a moving shaft 1 and a rotating wheel 5, one side of the pop-up device is connected with the moving shaft 1, the other side of the pop-up device is connected with the positioning mechanism, the rotating wheel 5 is installed on the moving shaft 1 on one side of the slide way of the cam car 12, the driving mechanism moves the moving shaft 1 left and right under the combined action of a motor and the pop-up device, and the rotating wheel 5 and the cam car.

The two sides of the moving shaft 1 are respectively and sequentially provided with a brush layer 11, a rubber layer 10 and a positioning mechanism positioning block 2 from inside to outside, and the brush layer 11, the rubber layer 10 and the positioning mechanism positioning block 2 form a positioning mechanism. The rubber layer 10 and the brush layer 11 can increase the friction force between the moving shaft 1, the brush layer 11 and the rubber layer 10, so that the moving speed of the moving shaft 1 is reduced under the action of the motor, the excessive force of the moving shaft 1 is avoided, the excessive force between the rotating wheel 5 and the cam car 12 is avoided, and the upward movement of the cam car 12 is smooth.

The popping device comprises two springs 3 and a connecting plate 4, one end of each spring 3 is fixedly connected with the positioning mechanism positioning block 2, the other end of each spring is fixedly connected with the connecting plate 4, the connecting plate 4 penetrates through the moving shaft 1 and is fixed with the moving shaft 1, and the spring 3 is further provided with an electric coupler lock catch. The connecting plate 4 and the moving shaft 1 are fixed together, under the action of the motor, the moving shaft 1 drives the connecting plate 4 to move leftwards, the distance of leftward movement of the moving shaft 1 is limited due to the limited stretched length of the spring 3, and when the spring 3 is stretched to the limit position, the spring 3 is locked by the lock catch, so that the spring 3 is fixed at the stretched position. When the moving shaft 1 needs to move rightwards, the lock catch is unlocked, the spring 3 is reset, and the connecting plate 4 and the moving shaft 1 move rightwards.

Car locating piece 8 installs on the well, and two car locating pieces 8 are a set of, and four car locating pieces 8 can divide into two sets ofly, and two sets of car locating pieces 8 are located the left and right sides of cam car 12 respectively. The car positioning block 8 may fix the position of the cam car 12.

The rotating wheel 5 is connected with one end of the moving shaft 1 through a rotating shaft 9. The runner 5 can be rotated by the rotating shaft 9, when the moving shaft 1 moves leftward when the cam car 12 is going to move upward, the runner 5 contacts the cam car 12, the runner 5 rotates counterclockwise, and the cam car 12 moves upward. When the moving shaft 1 moves rightward when the cam car 12 is going to run downward, the runner 5 contacts the cam car 12, the runner rotates clockwise, and the cam car 12 moves downward.

Cam car 12's bottom installation spring mechanism, spring mechanism includes base 6 and supporting spring 7, base 6 is cylindric, base 6 installs on the pit, supporting spring 7 one end winding is on base 6. The spring mechanism can have an upward acting force when the cam car 12 moves upwards, and can play a role in buffering when the cam car 12 moves downwards, so that the cam car 12 is prevented from being weightless due to overlarge downward force of the cam car 12.

The brush of the brush layer 11 is soft hair. The friction force added by the soft hair is not too large, and the moving shaft cannot move left and right easily due to the excessive friction force.

Claims

1. The utility model provides a cam drive system for elevator, its characterized in that, cam drive system includes cam car (12), actuating mechanism, four car locating pieces (8), cam car (12) one side is protruding, and the bulge forms the slide, and actuating mechanism is located one side of cam car (12) slide, actuating mechanism includes positioning mechanism, pop out device, motion axle (1) and runner (5), pop out device one side and be connected with motion axle (1), the opposite side is connected with positioning mechanism, and runner (5) are installed on motion axle (1) of cam car (12) slide one side, and actuating mechanism makes motion axle (1) side-to-side motion under motor and pop out device combined action to runner (5) and cam car (12) contact make cam car (12) along the slide up-and-down motion.

2. The cam driving system for the elevator according to claim 1, wherein a brush layer (11), a rubber layer (10) and a positioning mechanism positioning block (2) are respectively provided on both sides of the moving shaft (1) from inside to outside in sequence, and the brush layer (11), the rubber layer (10) and the positioning mechanism positioning block (2) constitute a positioning mechanism.

3. Cam driving system for elevator according to claim 1, characterized in that the ejecting means comprises two springs (3) and a connecting plate (4), each spring (3) has one end fixedly connected to the positioning mechanism positioning block (2) and the other end fixedly connected to the connecting plate (4), the connecting plate (4) passes through the moving shaft (1) and is fixed to the moving shaft (1), and the spring (3) is further provided with an electric coupler lock.

4. The cam driving system for the elevator as claimed in claim 1, wherein the car positioning blocks (8) are installed on the hoistway, two car positioning blocks (8) are one set, four car positioning blocks (8) are divided into two sets, and two sets of car positioning blocks (8) are respectively located at the left and right sides of the cam car (12).

5. Cam drive system for an elevator according to claim 1, characterized in that the wheel (5) is connected to one end of the moving shaft (1) by means of a rotating shaft (9).

6. Cam drive system for an elevator according to claim 1, characterized in that the bottom of the cam car (12) is fitted with a spring mechanism comprising a base (6) and a support spring (7), the base (6) being cylindrical, the base (6) being mounted on the pit, the support spring (7) being wound at one end on the base (6).

7. A cam drive system for an elevator according to claim 2, characterized in that the brushes of the brush layer (11) are soft bristles.