CN220336717U - Lifting device for double safety doors of lifting machine - Google Patents

Abstract

The utility model discloses a lifting device for a double safety door of a lifting machine, which comprises an upper door assembly, a lower door assembly, a door hanger assembly, a driving motor assembly, a door guide rail, a counterweight assembly, a counterweight guide rail and a transmission chain, wherein two fixed chain wheels are arranged at the upper end of the upper door assembly; two chain connecting bolts are fixedly perforated at the upper end of the lower door assembly; the door hanging frame assembly is provided with three chain wheels and a chain fixing plate; the door guide rail guide sliding block slides up and down on the surface of the door guide rail guide sliding block; the counterweight component is a door counterweight; the counterweight assembly slides up and down on the surface of the counterweight guide rail through the guide plate; the transmission chain is connected with the counterweight component, the upper door component and the lower door component, and is meshed with the driving motor gear to drive the door to act. The utility model has simple structure and ingenious design, can realize the synchronous and different-speed actions of two safety doors positioned on different tracks by using one motor, and can reduce the power required by the selective driving motor in the form of hanging and pulling the counterweight.

Description

Lifting device for double safety doors of lifting machine

Technical Field

The utility model relates to the technical field of elevators, in particular to a double-safety-door elevator device of an elevator.

Background

Hoists are large lifting devices commonly used for vertical cargo handling. The elevator safety door is usually installed at the loading and unloading entrance of each floor of the elevator, and is a safety protection device. When no carrying task is carried, the double safety doors are in a falling state, the double doors are staggered up and down to seal the whole entrance side by side, and operators or cargoes are prevented from falling down due to improper operation or unexpected entering the hoistway; when a carrying task exists, the double safety doors are opened, so that goods can enter and exit normally, and the safety doors fall down again after the carrying task is completed.

The double-safety-door lifting device of the elevator on the market is complex in structure, and needs to meet the requirements of different speeds and different reaching positions of two doors, two motors are generally needed, and each motor and one door independently correspond to realize lifting action, so that cost waste is caused, and electric energy is consumed.

Disclosure of Invention

The utility model aims to solve the problems in the prior art and provides a lifting device for a double safety door of a lifting machine.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

the double-safety-door lifting device of the elevator comprises an upper door assembly, a lower door assembly, a door hanger assembly, a driving motor assembly, a door guide rail, a counterweight assembly, a counterweight guide rail and a transmission chain, wherein two fixed chain wheels are arranged at the upper end of the upper door assembly; two chain connecting bolts are fixedly perforated at the upper end of the lower door assembly; the door hanging frame assembly is provided with three chain wheels and a chain fixing plate; the door guide rail guide sliding block slides up and down on the surface of the door guide rail guide sliding block; the counterweight component is a door counterweight; the counterweight assembly slides up and down on the surface of the counterweight guide rail through the guide plate; the transmission chain is connected with the counterweight component, the upper door component and the lower door component, and is meshed with the driving motor gear to drive the door to act.

Preferably, the upper door assembly is provided with two chain wheels at the upper end, and guide sliding blocks are arranged at two sides of the upper door assembly; the upper end of the lower door assembly is perforated and connected with two bolts, the bolts are provided with chain connecting holes, and the two sides of the bolts are provided with guide sliding blocks; the door hanger assembly is provided with three chain wheels; the driving motor assembly comprises a motor fixing seat and a three-phase asynchronous motor; the upper door assembly and the lower door assembly slide up and down on the surfaces of the upper door assembly and the lower door assembly through guide sliding blocks; the upper end of the counterweight component is connected with three bolts, the bolts are provided with chain connecting holes, and the lower end face of the counterweight component is provided with a guide plate; a counterweight guide rail, the counterweight assembly sliding up and down on its surface through a guide plate; and one end of the transmission chain is connected with the counterweight assembly, and the other end of the transmission chain is connected with the upper door assembly and the lower door assembly and meshed with the driving motor assembly to realize up-and-down movement.

Preferably, a sprocket fixing seat is welded at the upper part of the upper door assembly, a sprocket with a bearing is arranged on the sprocket fixing seat, and the upper door assembly is driven by a transmission chain to realize up-and-down motion.

Preferably, the upper end surface of the lower door assembly is provided with two bolts, and the head of each bolt is provided with a through hole for connecting a transmission chain, so that the lower door assembly is driven to realize up-and-down motion.

Preferably, 3 chain wheels are arranged on the door hanger assembly, a chain fixing plate is welded on one side close to the chain wheel 3, wherein the chain wheel 1 and the chain wheel 3 are used for realizing the up-and-down motion of the lower door assembly, the chain wheel 2 and the chain fixing plate are used for realizing the up-and-down motion of the upper door assembly, the chain wheel 1 and the chain wheel 3 are positioned in the same plane, the chain wheel 2 and the chain fixing plate are positioned in another plane, and the up-and-down motion of the two safety doors is ensured not to interfere with each other.

The utility model has the following beneficial effects:

1. through the design of the upper door assembly similar to the movable pulley, the synchronous different-speed actions of two doors driven by one motor are realized, the hardware cost is saved, the electric energy is consumed, the structure is simplified, and the installation is convenient.

2. Through the form of open-loop chain hanging and pulling counter weight, can reduce the power that the selection was joined in marriage driving motor and need, compare closed-loop chain structure simultaneously, the fault rate is low, easy maintenance.

Drawings

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

FIG. 2 is a schematic view of the security door with the double door fully lifted and folded;

FIG. 3 is a schematic view of a top door assembly;

FIG. 4 is a schematic view of a lower door assembly;

FIG. 5 is a schematic view of a door hanger assembly;

FIG. 6 is a schematic diagram of a drive motor assembly;

the marks in the figure: the door comprises an upper door assembly, a 1-1 fixed sprocket, a 1-2 guide slide block, a 2 lower door assembly, a 2-1 chain connecting bolt, a 2-2 guide slide block, a 3 door hanger assembly, a 3-1 sprocket 1, a 3-2 sprocket 2, a 3-3 sprocket 3, a 3-4 chain fixing plate, a 4 driving motor assembly, a 4-1 motor fixing seat, a 4-2 three-phase asynchronous motor, a 5 door guide rail, a 6 counterweight assembly, a 6-1 chain connecting bolt, a 6-2 guide plate, a 7 counterweight guide rail and an 8 transmission chain.

Detailed Description

The present utility model will be described in detail with reference to the accompanying drawings.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "provided," "connected," and the like are to be construed broadly, and may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to specific circumstances.

As shown in fig. 1, as a specific embodiment of the present utility model, a lifting device for a double safety door of a lifting machine is disclosed, which can be used in the fields of lifting machines, logistics automation and the like, and comprises an upper door assembly 1, a lower door assembly 2, a door hanger assembly 3, a driving motor assembly 4, a door guide rail 5, a counterweight assembly 6, a counterweight guide rail 7 and a transmission chain 8.

As shown in figure 1, the door hanger assembly 3, the driving motor assembly 4, the door guide rail 5 and the counterweight guide rail 7 are fixedly connected with the elevator frame by bolts, and are fixed parts without degrees of freedom and are immovable. The driving motor assembly 4 is connected with the upper door assembly and the lower door assembly through a transmission chain 8, one end of the driving motor assembly is connected with the counterweight assembly 6, and the driving motor assembly drives the safety door and the counterweight to slide up and down in respective tracks through meshing of the gear chains.

In a preferred embodiment, as shown in fig. 3, the door hanger assembly 3 is provided with three shaft holes, a shaft penetrates through the holes, a chain wheel with a bearing is sleeved on the shaft, and the chain wheel is driven by a transmission chain 8 to rotate freely. The chain wheel 1 and the chain wheel 3 are lower door driving parts, chains meshed with the chain wheel 1 and the chain wheel 3 are arranged, one end of each chain is connected with a chain connecting bolt 2-1 on the lower door assembly 2, the other end of each chain is matched with a driving motor assembly 4 and then connected with a chain connecting bolt 6-1 on the counterweight assembly 6, and the lower door assembly 2 can slide up and down under the driving of the three-phase asynchronous motor 4-2. The chain wheel 2 is an upper door driving part, a chain meshed with the chain wheel 2, one end of the chain is connected with the counterweight component 6, the other end of the chain is meshed with the chain wheel 2 after passing through the driving motor component 4, and the chain is vertically and fixedly connected with the chain fixing plate 3-4 on the door hanger component 3 upwards after passing through two fixed chain wheels 1-1 at the upper end of the upper door component 1. When the driving motor assembly 4 rotates, the two fixed chain wheels 1-1 on the upper door assembly 1 are equivalent to a movable pulley block, so that the function of simultaneously driving the two doors to rise and fall at different speeds through one motor and stopping after reaching different positions is realized.

Claims (4)

1. The double-safety-door lifting device of the elevator comprises an upper door assembly (1), a lower door assembly (2), a door hanger assembly (3), a driving motor assembly (4), a door guide rail (5), a counterweight assembly (6), a counterweight guide rail (7) and a transmission chain (8), and is characterized in that two fixed chain wheels (1-1) are arranged at the upper end of the upper door assembly (1); two chain connecting bolts (2-1) are fixedly perforated at the upper end of the lower door assembly (2); the door hanging frame assembly (3) is provided with three chain wheels (3-1, 3-2, 3-3) and a chain fixing plate (3-4); the door guide rail (5) guides the sliding blocks (1-2, 2-2) to slide up and down on the surfaces of the sliding blocks; the counterweight component (6) is a door counterweight; the counterweight guide rail (7) is characterized in that the counterweight assembly (6) slides up and down on the surface of the counterweight guide rail through the guide plate (6-2); the transmission chain (8) is connected with the counterweight component (6) and the upper and lower door components (1, 2) and meshed with the driving motor component (4) by gears to drive the door to act.

2. The lifting device for the double safety doors of the elevator according to claim 1, wherein two fixed chain wheels (1-1) are arranged on the upper part of the upper door assembly (1), and the upper door assembly (1) is driven to act through a transmission chain (8).

3. The lifting device for the double safety door of the elevator according to claim 1, wherein two chain connecting bolts (2-1) are fixedly arranged on the holes on the upper end face of the lower door assembly (2), and through holes are formed in the head portions of the bolts and used for connecting a transmission chain (8) to drive the lower door assembly (2) to act.

4. The lifting device for the double safety door of the elevator according to claim 1, wherein 3 chain wheels (3-1, 3-2, 3-3) are arranged on the door hanger assembly (3), a chain fixing plate (3-4) is welded on one side, close to the chain wheels (3-3), of the door hanger assembly (3), wherein the chain wheels (1, 3-1) and the chain wheels (3-3) are used for the action of the lower door assembly (2), the chain wheels (2, 3-2) and the chain fixing plate (3-4) are used for the action of the upper door assembly (1), the chain wheels (1, 3-1) and the chain wheels (3-3) are located in the same plane, and the chain wheels (2, 3-2) and the chain fixing plate (3-4) are located in the same plane, so that the simultaneous actions of two doors are guaranteed not to interfere with each other.