Construction hoist cage door opening and closing device

Abstract

The application provides a construction hoist cage door opening and closing device, which comprises a cage door, a cage frame and two groups of lifting assemblies, the two sides of the cage frame are respectively provided with slide rails, the cage door can reciprocate up and down along the slide rails on the two sides of the cage frame, the two groups of lifting assemblies are located on the two sides of the cage frame, the lifting assembly comprises a counterweight and a steel wire rope; a driving assembly is arranged on the upper side of the cage frame, the output shaft of the driving motor of the driving assembly is connected with the input shaft of the speed reducer, the two output shafts of the speed reducer respectively extend to the upper sides of the two slide rails, two driving wheels are respectively arranged on the two output shaft ends of the speed reducer, one end of the steel wire rope is fixed with the counterweight, and the other end of the steel wire rope is wound around the driving wheels of the driving assembly and is fixed with the bottom of the cage door. The beneficial technical effects are that the driving assembly is added, the driving motor and the speed reducer are used in cooperation to change the opening and closing mode of the cage door, the proximity switch, the pulley and the slow descent assembly are added, and the automatic opening and closing of the construction hoist cage door is achieved and the safety is ensured.

Description

Technical Field

[0001] This invention relates to a construction equipment, and more particularly to a cage door opening and closing device for a construction hoist. Background Technology

[0002] Construction hoists are lifting cage devices used in building construction. They are commonly used personnel and cargo transport machines, primarily for interior and exterior decoration of high-rise buildings. Their unique box-like structure provides both comfort and safety for construction workers. Existing construction hoists consist of a cage frame and two cage doors on either side. The cage doors are suspended from the cage frame by steel wire ropes, with counterweights attached to the other end of the ropes. Operators manually open and close the cage doors. However, due to manual control, opening and closing these hoists is time-consuming and labor-intensive, and lacks a slowing mechanism. When the cage closes, the inertia generates significant kinetic energy, which may damage the cage frame and affect the hoist's lifespan. Furthermore, if personnel or cargo are not fully inside the cage, the closing action of the cage doors can injure or damage the cargo.

[0003] Chinese Patent CN202483308U discloses a mechanical lock for a construction hoist cage door, relating to construction hoists. It provides a simple, easy-to-install, and relatively safe mechanical lock for a construction hoist cage door. The lock includes a cage door, a counterweight pulley, clamps, a cage frame, a counterweight block, and a wire rope. The cage door is mounted on the cage frame via a pulley guide. The wire rope passes over the counterweight pulley, with one end connected to the counterweight block and the other end connected to the cage door. When the cage door is pushed upwards, the counterweight block descends, opening the cage door. When the cage door is pulled downwards, the counterweight block rises, closing the cage door. The clamps are mounted on the cage frame. When the cage door is closed, pulling the clamp handle downwards causes the top post on the clamp to extend and press against the bottom of the counterweight block, preventing it from descending and thus preventing the cage door from opening. Pulling the clamp handle upwards causes the top post on the clamp to retract, allowing the counterweight block to descend and the cage door to open. However, the aforementioned patent-described technical solution still relies on manual operation to open and close the cage door, which fails to solve the technical problems existing in the prior art. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a construction hoist cage door opening and closing device that is easy to use and has a slowing function when the cage door descends.

[0005] To solve the above technical problems, the present invention provides a construction hoist cage door opening and closing device, including a cage door, a cage frame and two sets of lifting components. The cage frame is provided with slide rails on both sides, and the cage door can move up and down along the slide rails on both sides of the cage frame. The two sets of lifting components are located on both sides of the cage frame. The lifting components include counterweights and steel wire ropes.

[0006] The upper side of the cage is equipped with a drive assembly, which includes a drive motor, a reducer and two drive wheels. The output shaft of the drive motor is connected to the input shaft of the reducer. The two output shafts of the reducer extend to the upper side of the slide rails on both sides. The two drive wheels are respectively installed at the ends of the two output shafts of the reducer. The two drive wheels correspond one-to-one with the two sets of lifting assemblies. One end of the wire rope is fixed to the counterweight, and the other end of the wire rope passes around the drive wheel of the drive assembly and is fixed to the bottom of the cage door.

[0007] As a preferred embodiment of the cage door opening and closing device of this construction hoist, the drive motor and reducer of the drive assembly are respectively fixed on the upper end face of the cage frame.

[0008] As a preferred embodiment of the cage door opening and closing device of this construction hoist, the cage frame is also provided with two sets of slow-descent components. The two sets of slow-descent components correspond one-to-one with the slide rails on both sides. The slow-descent components include at least guide wheels, which are installed inside the slide rails and abut against the side wall of the cage door.

[0009] As a preferred embodiment of the cage door opening and closing device of this construction hoist, the slow descent assembly further includes a swing seat and a swing arm. The swing seat is located on the upper part of the inner side of the slide rail. The swing seat is hinged to the side walls of the slide rail by a rotating pin. The pulley is supported on the swing seat. The upper end of the swing arm is fixedly connected to the swing seat, and the lower end of the swing arm extends into the direction of the cage door.

[0010] As a preferred option for the opening and closing device of the cage door of this construction hoist, a proximity switch is also provided on the inner side of the cage frame, and a sensing block that cooperates with the proximity switch is provided on the inner side wall of the bottom of the cage door.

[0011] As a preferred embodiment of the cage door opening and closing device of this construction hoist, the drive motor is a variable frequency servo motor.

[0012] This construction hoist's cage door opening and closing device improves upon the traditional manual switch by adding a proximity switch and drive components, enabling the construction hoist to automatically open and close the cage door and adjust the variable frequency motor speed, ensuring safety and improving passenger comfort.

[0013] The beneficial technical effects of this construction hoist cage door opening and closing device are as follows:

[0014] 1. Add a drive component and use a drive motor and reducer to change the opening and closing method of the cage door. The drive motor adopts a servo motor with frequency conversion function to solve the needs of passengers for safety, comfort and convenience.

[0015] 2. Add proximity switches, pulleys, and slow-descent components to achieve automatic opening and closing of the construction hoist cage door and ensure safety. Attached Figure Description

[0016] Figure 1 This is a front view of an embodiment of the cage door opening and closing device of this construction hoist.

[0017] Figure 2 yes Figure 1 Top view.

[0018] Figure 3 yes Figure 1 The right view.

[0019] Figure 4 yes Figure 3 A cross-sectional view of enlarged section A.

[0020] Figure 5 yes Figure 3 A sectional view along the BB direction. Detailed Implementation

[0021] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0022] The terms “vertical,” “horizontal,” “left,” “right,” and similar expressions used in this document are for illustrative purposes only and do not represent the only possible implementation.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0024] Please see Figures 1 to 5 .

[0025] The cage door opening and closing device of this construction hoist includes a cage door 2, a cage frame 1, two sets of lifting components and two sets of drive components.

[0026] The cage frame 1 is provided with slide rails 21 on both sides. The cage door 2 can move up and down along the slide rails 21 on both sides of the cage frame 1. Two sets of lifting components are located on both sides of the cage frame 1. The lifting components include counterweights 31 and steel wire ropes 32.

[0027] The upper side of the cage 1 is provided with a drive assembly, which includes a drive motor 41, a reducer 42 and two drive wheels 43.

[0028] The drive motor 41 is a variable frequency servo motor. By utilizing the drive motor 41's motion transmission method and motor frequency conversion function, and in conjunction with the servo motor encoder, the opening and closing device can be controlled by both limit sensing and button methods, thereby achieving automation.

[0029] The drive motor 41 and the reducer 42 are respectively fixed on the upper surface of the cage frame 1. The output shaft of the drive motor 41 is connected to the input shaft of the reducer 42. The two output shafts of the reducer 42 extend to the upper side of the slide rails 21 on both sides. The two drive wheels 43 are respectively installed at the ends of the two output shafts of the reducer 42. The two drive wheels 43 correspond one-to-one with the two sets of lifting components. One end of the wire rope 32 is fixed to the counterweight 31, and the other end of the wire rope 32 passes around the drive wheel 43 of the drive component and is fixed to the bottom of the cage door 2.

[0030] Two sets of slow-descent components correspond one-to-one with the slide rails 21 on both sides. The slow-descent components are all located in the corresponding slide rails 21. The slow-descent components include guide wheels 51, swing seats 52 and swing arms 53. The guide wheels 51 abut against the side wall of the cage door 2. The swing seats 52 and guide wheels 51 are located on the upper part of the inner side of the slide rails 21. The swing seats 52 are hinged to the side walls of the slide rails 21 by rotating pins 54. The pulleys are supported on the swing seats 52. The upper end of the swing arm 53 is fixedly connected to the swing seats 52. The lower end of the swing arm 53 extends into the direction of the cage door 2. The rotating pins 54 are the fulcrum. The distance between the rotating pins 54 and the guide wheels 51 is much smaller than the distance between the lower end of the swing arm 53 and the rotating pins 54.

[0031] A proximity switch 11 is also provided inside the cage frame 1. The proximity switch 11 is located on the upper part of the cage frame 1. A sensing block 12 that cooperates with the proximity switch 11 is provided on the inner side wall of the bottom of the cage door 2. When the proximity switch 11 senses the sensing block 12, the drive motor 41 stops working. The proximity switch 11 can ensure the upward opening stroke of the cage door 2.

[0032] In use, the opening and closing of the cage door 2 can be powered by the drive motor 41. The drive motor 41 drives the drive wheel 43 to rotate synchronously through the reducer 42, which can realize the synchronous lifting and lowering of both sides of the cage door 2 and ensure the normal operation of the cage door 2.

[0033] When the cage door 2 closes, the guide wheel 51 of the slow-descent assembly first contacts the cage door 2, and the cage door 2 descends along the guide wheel 51. After the cage door 2 gradually descends, it contacts the lower end of the swing arm 53. The swing arm 53 acts on the swing seat 52, and the guide wheel 51 rotates along the rotating pin 54. The guide wheel 51 gradually presses against the cage door 2. The slow-descent assemblies on both sides act simultaneously, which reduces the descent speed of the cage door 2. However, the friction between the guide wheel 51 and the side wall of the cage door 2 is not enough to stop the cage door 2 from falling.

[0034] In addition, the cage door opening and closing device of this construction hoist is driven by a variable frequency motor and is powered by a push-button electric mechanism. To enhance safety, a proximity switch 11 is added to realize the automation performance of the equipment, improve the safety performance of the cage door 2 and the comfort of the passengers. From the perspective of equipment automation development, there is a large market space, which can increase equipment sales and meet customers' needs for safety and convenience.

[0035] The above description is only one embodiment of the present invention. It should be noted that those skilled in the art can make several modifications and improvements without departing from the principle of the present invention, and these should also be considered to fall within the protection scope of the present invention.

Claims

1. A construction hoist cage door opening and closing device, comprising a cage door, a cage frame and two groups of lifting assemblies, the cage frame is provided with slide rails on both sides, the cage door can move up and down along the slide rails on both sides of the cage frame, and the two groups of lifting assemblies are arranged on both sides of the cage frame; the lifting assembly comprises a counterweight and a steel wire rope; characterized in that: the upper side of the cage frame is provided with a driving assembly, the driving assembly comprises a driving motor, a speed reducer and two driving wheels, the output shaft of the driving motor is connected with the input shaft of the speed reducer, the two output shafts of the speed reducer extend to the upper sides of the slide rails on both sides, the two driving wheels are respectively installed at the end portions of the two output shafts of the speed reducer, the two driving wheels correspond to the two groups of lifting assemblies one by one, one end of the steel wire rope is fixed with the counterweight, and the other end of the steel wire rope is wound around the driving wheels of the driving assembly and is fixed with the bottom of the cage door; the driving motor and the speed reducer of the driving assembly are fixed on the upper end face of the cage frame; the cage frame is further provided with two groups of slow descent assemblies, the two groups of slow descent assemblies correspond to the slide rails on both sides one by one, the slow descent assembly at least comprises a guide wheel, and the guide wheel is arranged in the slide rail and abuts against the side wall of the cage door; the slow descent assembly further comprises a swing seat and a swing arm, the swing seat is arranged on the inner side of the slide rail, the swing seat is hinged to the side walls on both sides of the slide rail through a rotating pin shaft, a pulley is supported on the swing seat, the swing arm is fixedly connected with the swing seat at the upper end, and the lower end of the swing arm extends to the side of the cage door; the inner side of the cage frame is further provided with a proximity switch, and the inner side wall of the bottom of the cage door is provided with a sensing block matched with the proximity switch; and the driving motor is a variable frequency servo motor.

2. The construction hoist cage door opening and closing device according to claim 1, wherein the driving motor is a variable frequency servo motor.

3. The construction hoist cage door opening and closing device according to claim 1, wherein the driving motor is a variable frequency servo motor.

4. The construction hoist cage door opening and closing device according to claim 1, wherein the driving motor is a variable frequency servo motor.

5. The construction hoist cage door opening and closing device according to claim 1, wherein the driving motor is a variable frequency servo motor.

6. The construction hoist cage door opening and closing device according to claim 1, wherein the driving motor is a variable frequency servo motor.

7. The construction hoist cage door opening and closing device according to claim 1, wherein the driving motor is a variable frequency servo motor.

8. The construction hoist cage door opening and closing device according to claim 1, wherein the driving motor is a variable frequency servo motor.

9. The construction hoist cage door opening and closing device according to claim 1, wherein the driving motor is a variable frequency servo motor.

10. The construction hoist cage door opening and closing device according to claim 1, wherein the driving motor is a variable frequency servo motor.

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