CN220787756U - Driving device for opening and closing door of lifting cage of construction elevator - Google Patents

Abstract

The utility model discloses a driving device for opening and closing a cage door of a construction elevator, which belongs to the field of construction machinery. The utility model adopts the chain wheel, the chain and the counterweight as main components, and drives the chain to lift by the positive and negative rotation of the motor when the door is opened and closed, so that the opening and closing of the cage door are realized, the counterweight can ensure that the chain is always in a straight state in the lifting process of the cage door, the whole driving device operates stably, and the counterweight can provide a certain acting force in the door opening process, thereby reducing the driving force of the motor, reducing the requirements on the motor and the speed reducer, and being beneficial to saving the cost, reducing the failure rate and prolonging the service life of equipment.

Description

Driving device for opening and closing door of lifting cage of construction elevator

Technical Field

The utility model relates to the field of construction machinery, in particular to a driving device for opening and closing a cage door of a construction elevator.

Background

The working principle of the construction elevator is similar to that of a common elevator, and the motor at the top drives the elevator car to lift along the elevator frame, so that the difference of the doors is larger. The elevator for construction generally adopts a cage door structure, is similar to a roller shutter door, and is opened and closed along the up-down direction, so that the door opening size can be increased as much as possible, and the cargo transportation is facilitated. However, the cage door of the existing construction elevator is not provided with a driving device, the cage door needs to be manually lifted upwards when the door is opened, and the cage needs to be manually pulled down when the door is closed. Therefore, the door opening and closing process is time-consuming and labor-consuming, the door opening and closing process is inconvenient to operate when an object is carried on the hand, the door closing forgetting condition often occurs, and certain potential safety hazards exist.

Disclosure of Invention

In order to overcome the defects of inconvenient door opening and closing and the like of the existing construction elevator, the utility model aims to solve the technical problems that: the driving device for opening and closing the door of the lifting cage of the construction elevator can realize electric opening and closing of the door.

The technical scheme adopted for solving the technical problems is as follows:

a drive arrangement for construction elevator cage door switching, including actuating mechanism, chain and counter weight, actuating mechanism is located construction elevator top, including accessible motor drive pivoted sprocket, chain one end links to each other with the cage door, and the other end walks around the sprocket and links to each other with the counter weight.

Further, two chains are respectively connected to the left side and the right side of the cage door, and the two chains are respectively connected with two counterweights after bypassing the two chain wheels on the driving mechanism.

Further, one end of the chain connected with the cage door is arranged at the bottom of the cage door, and the moving direction of the chain is parallel to the lifting direction of the cage door.

Further, a chain hook is arranged at the bottom of the cage door, a guide block which is in sliding connection with a door frame of the cage door is arranged on the chain hook, and one end of the chain connected with the cage door is fixed on the chain hook.

Further, the counterweight is provided with a roller which can be clamped on a vertical sliding rail to slide.

Further, the driving mechanism comprises a mounting bracket, a motor and a speed reducer, wherein the motor and the speed reducer are positioned in the middle of the mounting bracket, the speed reducer is a worm gear speed reducer with a self-locking function, the speed reducer comprises a left output shaft and a right output shaft, and the two output shafts are respectively connected with two chain wheels at two ends of the mounting bracket through a transmission rod.

Further, two ends of the mounting bracket are respectively provided with a bearing seat, the chain wheel is rotationally connected with the bearing seat through a rotating shaft, and two ends of the transmission rod are respectively connected with the output shaft and the rotating shaft through a coupling.

Further, a spacer bush is sleeved on the rotating shaft, and two ends of the spacer bush are respectively abutted with the bearing seat and the end part of the coupling.

The beneficial effects of the utility model are as follows: adopt sprocket, chain and counter weight as main component, drive the chain through the motor positive and negative rotation when opening and shutting the door and lift, realize hanging cage door's switching, the counter weight can ensure that the chain is in the state of stretching all the time in the lift process of hanging cage door, makes whole drive arrangement steady operation, and the counter weight can provide certain effort in the in-process of opening the door simultaneously to reduce the driving force of motor, reduced the requirement to motor and reduction gear, be favorable to saving cost, reduction fault rate and extension equipment life.

Drawings

FIG. 1 is a schematic view of the overall structure of the present utility model;

FIG. 2 is a front view of the drive mechanism of the present utility model;

FIG. 3 is a top view of FIG. 2;

the device is characterized by comprising a 1-driving mechanism, a 2-chain, a 3-counterweight, a 4-chain wheel, a 5-cage door, an 11-motor, a 12-mounting bracket, a 13-speed reducer, a 14-output shaft, a 15-transmission rod, a 16-bearing seat, a 17-coupling, an 18-spacer bush, a 31-roller, a 41-rotating shaft, a 51-chain hook and a 52-guide block.

Detailed Description

The utility model is further described below with reference to the accompanying drawings.

In the present utility model, directional terms such as up, down, left, right, front, rear, and azimuth are used to facilitate the description of the relative positional relationship between the members, and are not meant to refer specifically to the absolute position of the relative member or the inter-member relationship, but are used only to explain the relative positional relationship, movement, and the like between the members in a specific posture, and if the specific posture is changed, the directional terms are changed accordingly. In the present utility model, the terms "plurality", "a plurality" and the like refer to two or more.

As shown in fig. 1, the driving device for opening and closing the cage door of the construction elevator comprises a driving mechanism 1, a chain 2 and a counterweight 3, wherein the driving mechanism 1 is positioned at the top of the elevator and comprises a chain wheel 4 which can be driven to rotate by a motor 11, one end of the chain 2 is connected with the cage door 5, and the other end of the chain 2 is connected with the counterweight 3 after bypassing the chain wheel 4. The working process of the utility model is as follows: when the door is opened, the motor 11 drives the chain wheel 4 to rotate forward, so that the chain 2 moves upwards, and the cage door 5 is driven to open upwards; when the door is closed, the motor 11 drives the chain wheel 4 to rotate reversely, so that the chain 2 moves downwards, and the hanging cage door 5 is driven to close downwards. The counterweight 3 can ensure that the chain 2 is always in a straight state in the process, so that the whole driving device operates stably, and meanwhile, the counterweight 3 can provide a certain acting force in the door opening process, thereby reducing the driving force of the motor 11. The installation position of the driving mechanism 1 and the connection position of the chain 2 and the cage door 5 need to ensure that the cage door 5 can be completely lifted when the door is opened. In addition, the utility model only provides a specific driving device, and needs the cooperation of a plurality of existing position sensors, switches, PLC control programs and the like to ensure the stable operation of the cage door 5, so that the functions of reducing the speed and the slow motion before the cage door 5 reaches the end of the stroke, reducing the operation impact, such as stopping the switch position through the sensors, fixing the cage door 5 through a positioning mechanism and the like can be realized.

Because the cage door 5 is slidingly connected with the sliding grooves on the door frame through the rollers at two sides, if the stress at two sides is unbalanced, the sliding stability of the cage door 5 can be affected, therefore, the preferred scheme is that the two chains 2 are respectively connected at the left side and the right side of the cage door 5, and the two chains 2 are respectively connected with the two counterweights 3 after bypassing the two chain wheels 4 on the driving mechanism 1. The two sprockets 4 are preferably driven by the same motor 11, ensuring synchronous operation. The lifting cage door 5 is lifted by arranging the left chain 2 and the right chain 2, so that acting force can be dispersed, and the lifting cage door 5 can run more stably.

In order to increase the opening height of the cage door 5, one end of the chain 2 connected to the cage door 5 may be provided at the bottom of the cage door 5. In addition, in order to avoid the dispersion and waste of the lifting force, it is preferable that the moving direction of the chain 2 is parallel to the lifting direction of the cage door 5.

For the connection mode of the chain 2 and the cage door 5, the utility model adopts the structure that the bottom of the cage door 5 is provided with a chain hook 51, the chain hook 51 is provided with a guide block 52 which is in sliding connection with the door frame of the cage door 5, and one end of the chain 2 connected with the cage door 5 is fixed on the chain hook 51. The chain hook 51 and the guide block 52 can ensure that the acting point of the chain 2 slides along the door frame sliding groove, thereby further improving the running stability of the suspended cage door 5.

Further, a roller 31 is provided on the counterweight 3 so as to be capable of sliding on a vertical rail. The slide rail can be arranged on the existing elevator frame, the running of the counterweight 3 is restrained through the slide rail, the shaking in the running process is avoided, and the noise generated by shaking of the chain 2 is reduced.

As shown in fig. 2 and 3, the driving mechanism 1 adopts the scheme that the driving mechanism 1 comprises a mounting bracket 12, a motor 11 and a speed reducer 13 which are positioned in the middle of the mounting bracket 12, wherein the speed reducer 13 is a worm gear speed reducer with a self-locking function, and comprises a left output shaft 14 and a right output shaft 14, and the two output shafts 14 are respectively connected with two chain wheels 4 at two ends of the mounting bracket 12 through a transmission rod 15. The entire drive mechanism 1 is fixed on top of the construction elevator by means of a mounting bracket 12. The worm and gear reducer with the self-locking function is adopted, so that the sprocket 4 can be prevented from rotating under the condition that the motor 11 is stopped, and the cage door 5 is positioned.

For facilitating the installation of the sprocket 4, two ends of the installation support 12 are respectively provided with a bearing seat 16, the sprocket 4 is rotationally connected with the bearing seat 16 through a rotating shaft 41, and two ends of the transmission rod 15 are respectively connected with the output shaft 14 and the rotating shaft 41 through a coupling 17. Because the construction elevator is wide, a drive rod 15 and a coupling 17 are required to drive the sprocket 4 in rotation. The bearing blocks 16 ensure a supporting effect on the sprocket 4.

Since the reducer 13 is far away from the sprocket 4, the axial position may be inaccurate during the installation process, and the sprocket 4 may axially shift, so further, a spacer 18 is further sleeved on the rotating shaft 41, and two ends of the spacer 18 are respectively abutted with the bearing seat 16 and the end of the coupling 17. Through the contact of the spacer bush 18 and the bearing seat 16, the axial movement of the transmission rod 15 can be avoided, and the running stability of the driving mechanism 1 is improved.

Claims (4)

1. A drive arrangement for construction elevator cage door switching, characterized by: the elevator comprises a driving mechanism (1), a chain (2) and a counterweight (3), wherein the driving mechanism (1) is positioned at the top of an elevator and comprises a sprocket (4) which can be driven to rotate by a motor (11), one end of the chain (2) is connected with a cage door (5), the other end of the chain bypasses the sprocket (4) and then is connected with the counterweight (3), and a roller (31) which can be clamped on a vertical sliding rail to slide is arranged on the counterweight (3); the driving mechanism (1) comprises a mounting support (12) and a motor (11) and a speed reducer (13) which are positioned in the middle of the mounting support (12), the speed reducer (13) is a worm gear speed reducer with a self-locking function, the speed reducer comprises a left output shaft and a right output shaft (14), the two output shafts (14) are respectively connected with two chain wheels (4) at two ends of the mounting support (12) through a transmission rod (15), two ends of the mounting support (12) are respectively provided with a bearing seat (16), the chain wheels (4) are rotationally connected with the bearing seats (16) through rotating shafts (41), two ends of the transmission rod (15) are respectively connected with the output shafts (14) and the rotating shafts (41) through a coupling (17), spacer sleeves (18) are further sleeved on the rotating shafts (41), and two ends of each spacer sleeve (18) are respectively in butt joint with the bearing seats (16) and the end parts of the coupling (17).

2. The driving device for opening and closing a door of a cage of a construction elevator as claimed in claim 1, wherein: the two chains (2) are respectively connected to the left side and the right side of the cage door (5), and the two chains (2) are respectively connected with the two counterweights (3) after bypassing the two chain wheels (4) on the driving mechanism (1).

3. The driving device for opening and closing a door of a cage of a construction elevator as claimed in claim 2, wherein: one end of the chain (2) connected with the cage door (5) is arranged at the bottom of the cage door (5), and the movement direction of the chain (2) is parallel to the lifting direction of the cage door (5).

4. A driving device for opening and closing a door of a cage of a construction elevator as claimed in claim 3, wherein: the bottom of the cage door (5) is provided with a chain hook (51), the chain hook (51) is provided with a guide block (52) which is in sliding connection with a door frame of the cage door (5), and one end of the chain (2) connected with the cage door (5) is fixed on the chain hook (51).