Novel automatic double door of construction hoist

Abstract

The utility model discloses a novel automatic double door of a construction hoist, which is applied to a hoist cage and comprises an upper double door, a lower double door, a door transmission mechanism, a chain wheel and a chain. The door transmission mechanism is arranged on the top of the side wall, provided with the upper double door and the lower double door, of the cage, the chain wheel is installed on the door transmission mechanism, the chain is wound around the chain wheel, and the two ends of the chain are connected with the upper double door and the lower double door respectively. Compared with a traditional double door, the double door has the advantages that automatic opening and closing can be achieved, the automation degree is improved, compared with the traditional double door, an auxiliary roller is additionally arranged, door opening is smoother, abrasion of a roller rubber material to a door frame is small, economical efficiency is good, and the design link is convenient and fast; the work efficiency is improved, and the double doors are fastened and reliable through chain wheel and chain transmission and chain connection.

Description

Technical Field

[0001] The utility model relates to an automatic double-opening door of a lift, in particular to a novel automatic double-opening door of a construction lift. Background Art

[0002] The double doors of construction elevators are divided into upper double doors and lower double doors, which are used to close the cage structure and are often used as the discharge doors of the cage. The advantage of double doors is that the door stroke is smaller when opening. Compared with the large up and down stroke of single doors, the smaller stroke of double doors can be better utilized in complex working conditions, which is conducive to the arrangement of walls on site. The double doors can open faster at the same speed, thereby improving the efficiency of on-site personnel in transporting goods.

[0003] The traditional double doors of the cage are connected by wire ropes, which has low reliability and low degree of automation for manual opening. Figure 1 As shown; the double-door structure of an ordinary elevator includes: an upper double-door, a lower double-door, and a wire rope. The wire rope connects the upper double-door and the lower double-door through a pulley. When opening, the staff needs to push the upper double-door upward. After the upper double-door is opened upward, through the fixed pulley principle, the two ends are subjected to the same force but in opposite directions, so that the lower double-door is opened downward, achieving the effect of opening the discharge door; when closing, the staff also pulls down the upper double-door to close it; such a design will cause workers to use manpower to open and close manually, with a low degree of automation, and the pulley and the double-door are not on the same vertical line. Due to the increased distance of the pulley, the lower double-door connecting plate is longer than the upper double-door connecting plate, and the lower double-door is obliquely pulled by the wire rope, resulting in it being subjected to a force toward the inside of the cage, so that the lower double-door is close to the door frame, and the lower double-door has no pulley assistance, and only relies on the sliding groove and the door frame for sliding friction, which will wear the surface of the door frame for a long time, and the door will not be opened and closed smoothly.

[0004] This type of ordinary double door needs to be opened and closed manually, and manpower is needed to overcome the weight of the door, making it inconvenient to open the door and having a low degree of automation. In addition, there is no pulley assistance, and only sliding friction between the slide groove and the door frame is used. The surface of the door frame will be worn over a long period of time, and the door will not be opened and closed smoothly. Utility Model Content

[0005] In view of the problems existing in the above-mentioned prior art, the utility model provides a new type of automatic double-opening door for a construction elevator. The discharging door of the cage is often set as a double-opening door. Because the door opening stroke of the double-opening door is shortened by half compared with the single-opening door, the time required for opening the door is short, and the efficiency of on-site personnel is improved; on this basis, an automatic double-opening door is designed, and a central motor, an intermediate connecting shaft, a chain and a sprocket are arranged on the cage top for coordinated output. One end of the chain is connected to the upper double-opening door, and the other end is connected to the lower double-opening door. The intermediate connecting shaft is driven to rotate by the central motor shaft, and the rotation is transmitted to the sprocket. The chain bypasses the sprocket to form two different movement directions, which cooperate to lift the upper double-opening door. When the upper double-opening door is lifted upward, the chain bypasses the sprocket in the opposite direction to open the lower double-opening door downward, thereby opening the entire double-opening door; the lower double-opening door is often subjected to a pulling force toward the inner side of the cage due to its gravity and the fact that it is farther away from the chain. This pulling force makes the lower double-opening door close to the door frame to generate a large friction force, so it is designed to set an auxiliary roller on the outer side of the lower double-opening door to assist the lower double-opening door in opening and closing to reduce friction.

[0006] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a new type of automatic double-opening door for construction elevators, applied to the elevator cage, including: an upper double-opening door, a lower double-opening door, a door transmission mechanism, a sprocket, and a chain. The upper double-opening door and the lower double-opening door are respectively installed in the upper opening and lower opening slide grooves of the cage side walls, and the door transmission mechanism is arranged at the top of the side walls of the cage where the upper double doors and the lower double doors are installed. The sprocket is installed on the door transmission mechanism, and the chain is wound around the sprocket, and its two ends are respectively connected to the upper double door and the lower double door.

[0007] Furthermore, one end of the chain is connected to the lower end of the upper double door, and the other end of the chain is connected to the upper end of the lower double door.

[0008] Furthermore, the door transmission mechanism includes: a bearing seat, a central motor, an intermediate connecting shaft, and a linkage mechanism. The intermediate connecting shaft is installed on the top of the cage through the bearing seat, the central motor is arranged on one side of the intermediate connecting shaft, the central motor is connected to the intermediate connecting shaft through the linkage mechanism, and the sprocket is arranged at the end of the intermediate shaft.

[0009] Furthermore, the linkage mechanism is a sprocket chain linkage mechanism or a gear linkage mechanism.

[0010] Furthermore, a reducer is also provided on the output shaft of the central motor.

[0011] Furthermore, the end of the intermediate connecting shaft on which the sprocket is mounted extends out of the side wall of the cage.

[0012] Furthermore, the sprockets and chains are provided in two groups, and the sprockets are respectively installed at both ends of the middle connecting shaft.

[0013] Furthermore, it also includes an auxiliary roller, which is arranged between the lower double door and the side wall of the cage.

[0014] Furthermore, the auxiliary roller includes: a roller, a bolt, a large washer, and a sleeve. The roller is installed on the screw rod of the bolt through the sleeve. The large washer is installed in the bolt and is located on one side of the roller and the sleeve.

[0015] Furthermore, the central motor is electrically connected to the elevator control system, and the operation of the central motor is controlled by the elevator control system.

[0016] The beneficial effects of the utility model are as follows: the double door thereof is different from the traditional double door in that it can be opened and closed automatically, the degree of automation is improved, and compared with the traditional double door, the auxiliary roller is added to open the door more smoothly, the rubber material of the roller causes less wear to the door frame, the economy is better, the design link is more convenient, the on-site personnel can use it more conveniently and improve work efficiency, the sprocket chain transmission, the chain connection double door is fastened and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a common elevator double door in the background technology;

[0018] Figure 2 A schematic diagram of the structure of a cage for installing the utility model;

[0019] Figure 3 A schematic diagram of the structure of the cage of the utility model for removing the protective cover and installing the cage;

[0020] Figure 4 for Figure 3 Schematic diagram of partial enlarged structure;

[0021] Figure 5 is a schematic diagram of the auxiliary roller structure;

[0022] In the figure: 1. upper double door; 2. lower double door; 3. door transmission mechanism; 4. sprocket; 5. chain; 6. auxiliary roller; 61. roller; 62; bolt; 63. large gasket; 64. bushing. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail through the accompanying drawings and embodiments. However, it should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the scope of the utility model.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meanings as those commonly understood by technicians in the technical field to which the present invention belongs. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0025] like Figure 2-5 As shown, a new type of automatic double-opening door for a construction elevator is used on an elevator cage, comprising: an upper double-opening door 1, a lower double-opening door 2, a door transmission mechanism 3, a sprocket 4, and a chain 5. The upper double-opening door 1 and the lower double-opening door 2 are respectively installed in the upper opening and lower opening slide grooves of the cage side wall, the door transmission mechanism 3 is arranged on the top of the side wall of the cage where the upper double door 1 and the lower double door 2 are installed, the sprocket 4 is installed on the door transmission mechanism 3, the chain 5 is wound on the sprocket 4, and its two ends are respectively connected to the upper double door 1 and the lower double door 2, and the door transmission mechanism 3 is electrically connected to the elevator control system.

[0026] like Figure 2-3 As shown, one end of the chain 5 is connected to the lower end of the upper double door 1, and the other end of the chain 5 is connected to the upper end of the lower double door 2.

[0027] like Figure 3 As shown, the door transmission mechanism 3 includes: a bearing seat, a central motor, an intermediate connecting shaft, and a linkage mechanism. The intermediate connecting shaft is installed on the top of the cage through the bearing seat, the central motor is arranged on one side of the intermediate connecting shaft, and the central motor is connected to the intermediate connecting shaft through the linkage mechanism. The sprocket 4 is arranged at the end of the intermediate shaft.

[0028] Furthermore, the linkage mechanism is a sprocket 4 chain 5 linkage mechanism or a gear linkage mechanism.

[0029] Furthermore, a reducer is also provided on the output shaft of the central motor.

[0030] like Figure 3 As shown, the end of the intermediate connecting shaft on which the sprocket 4 is mounted extends out of the side wall of the cage, so that the sprocket 4 and the chain 5 are located in the same straight line, and the sliding is smoother.

[0031] Furthermore, the sprocket 4 and the chain 5 are provided in two groups, and the sprocket 4 is respectively installed at both ends of the middle connecting shaft.

[0032] like Figure 3-5 As shown, it also includes an auxiliary roller 616, which is arranged between the lower double door 2 and the side wall of the cage. The double door and the door frame are prone to wear due to sliding friction. The lower double door 2 is provided with an auxiliary roller 616 to make the double door open and close more smoothly.

[0033] like Figure 5As shown, the auxiliary roller 616 includes: a roller 61, a bolt, a large gasket 63, and a sleeve 64. The roller 61 is installed on the screw of the bolt through the sleeve 64. The large gasket 63 is installed in the bolt and is located on one side of the roller 61 and the sleeve 64. The sleeve is longer than the roller, so that a gap is maintained between the roller 61 and the large gasket 63, so that the roller 61 can roll smoothly. The auxiliary roller 6 can change the movement friction of the lower double door 2 from sliding friction to rolling friction and the roller can effectively offset the force toward the inside of the cage brought by the oblique pull of the chain 5, so that the door can be opened and closed more smoothly.

[0034] Furthermore, the central motor is electrically connected to the elevator control system, and the central motor is controlled by the elevator control system. The elevator control system controls the cage to automatically open and close when it reaches a designated position. For example, when the 12th floor is selected in the control system, the elevator control system controls the cage to open after it reaches the 12th floor.

[0035] The automatic double door of the elevator is driven by the door transmission mechanism 3, so that the sprocket 4 and the chain 5 move and output from this part. The central motor in the door transmission mechanism 3 transmits the rotation to the sprocket 4 by controlling the intermediate connecting shaft. The sprocket 4 is meshed with the chain 3. The two ends of the chain 5 are connected to the upper double door 1 and the lower double door 2. Its working principle is that when it is opened, the chain drives the upper double door to move upward to open, and at the same time changes direction through the sprocket to open the lower double door downward. Since the distance between the sprocket and the connecting plate of the lower double door is increased, the distance between the chain and the connecting plate is relatively large, so that the chain is inclined. After being inclined, it will give the lower double door a force toward the inside of the cage so that it has a tendency to be close to the door frame; therefore, auxiliary rollers (6) are added and installed on both sides of the lower double door to reduce friction.

[0036] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modification, equivalent substitution or improvement made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A new type of automatic double-door construction elevator, applied to the elevator cage, characterized in that: include: An upper double door, a lower double door, a door transmission mechanism, a sprocket, and a chain. The upper double door and the lower double door are respectively installed in the upper opening and lower opening slide grooves of the side walls of the cage. The door transmission mechanism is arranged on the top of the side walls of the cage where the upper double door and the lower double door are installed. The sprocket is installed on the door transmission mechanism. The chain is wound on the sprocket, and its two ends are respectively connected to the upper double door and the lower double door.

2. A new type of automatic double-opening door for construction hoist according to claim 1, characterized in that: One end of the chain is connected to the lower end of the upper double door, and the other end of the chain is connected to the upper end of the lower double door.

3. A new type of automatic double-opening door for construction hoist according to claim 1, characterized in that: The door transmission mechanism includes: a bearing seat, a central motor, an intermediate connecting shaft, and a linkage mechanism. The intermediate connecting shaft is installed on the top of the cage through the bearing seat. The central motor is arranged on one side of the intermediate connecting shaft. The central motor is connected to the intermediate connecting shaft through the linkage mechanism. The sprocket is arranged at the end of the intermediate shaft.

4. A new type of automatic double-opening door for construction hoist according to claim 3, characterized in that: The linkage mechanism is a sprocket chain linkage mechanism or a gear linkage mechanism.

5. A new type of automatic double-opening door for construction hoist according to claim 3, characterized in that: A reducer is also arranged on the output shaft of the central motor.

6. A new type of automatic double-opening door for construction hoist according to claim 3, characterized in that: The end of the intermediate connecting shaft on which the sprocket is mounted extends out of the side wall of the cage.

7. A new type of automatic double-opening door for construction hoist according to claim 3, characterized in that: The sprockets and chains are provided in two groups, and the sprockets are respectively installed at the two ends of the middle connecting shaft.

8. A new type of automatic double-opening door for construction hoist according to claim 1, characterized in that: It also includes an auxiliary roller, which is arranged between the lower double door and the side wall of the cage.

9. A new type of automatic double-opening door for construction hoist according to claim 8, characterized in that: The auxiliary roller comprises: a roller, a bolt, a large gasket, and a shaft sleeve. The roller is installed on the screw rod of the bolt through the shaft sleeve. The large gasket is installed in the bolt and is located on one side of the roller and the shaft sleeve.

10. A new type of automatic double-opening door for construction hoist according to claim 3, characterized in that: The central motor is electrically connected to the elevator control system, and the operation of the central motor is controlled by the elevator control system.

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