Intelligent anti-pinch device on construction elevator

Abstract

The utility model discloses an intelligent anti -pinch device on construction hoist, including compartment, protective door and protective door installation border, the protective door installation border is fixed at the import and export department of compartment, the protective door liftable is installed on protective door installation border, the utility model discloses the below inside installation of protective door installation border has a plurality of anti -pinch monitoring unit, and it is under the action of spring when operating, the force block is extruded to the touch switch upwards, makes the touch switch keep closed state, and the protective door will make all touch switch open after closing, and the protective door will make all touch switch close after opening, if one or more anti -pinch monitoring unit's touch switch is opened, then explain that there is object and presses on protective door installation border, will hinder the closing of protective door, a plurality of anti -pinch monitoring unit and grating receiving end can form grating curtain, and when the grating receiving unit at certain position can not receive grating, then explain that there is object and hinder the closing of protective door.

Description

Technical Field

[0001] This utility model relates to the field of construction hoist technology, specifically an intelligent anti-pinch device for construction hoists. Background Technology

[0002] Construction hoists are common equipment on construction sites, mainly used for vertical or inclined transportation of personnel and materials to improve construction efficiency and safety. Construction hoists are used to transport workers and materials to different floors, saving time and labor costs.

[0003] The working environment of construction hoists is relatively harsh, resulting in relatively low safety performance. Their safety doors lack necessary protective mechanisms, making it easy for people to be pinched when the safety doors close. Therefore, it is necessary to check whether there are any objects obstructing the closing of the safety doors before closing them. Utility Model Content

[0004] The purpose of this invention is to provide an intelligent anti-pinch device for construction hoists to solve the problems in the prior art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an intelligent anti-pinch device for a construction hoist, comprising a car body, a protective door, and a protective door mounting frame. The protective door mounting frame is fixed to the entrance and exit of the car body. The protective door is movably mounted on the protective door mounting frame. A protective door brake mechanism is installed on each of the upper sides of the protective door mounting frame. Multiple anti-pinch monitoring units are installed on the lower inner side of the protective door mounting frame. Each anti-pinch monitoring unit includes a force-bearing block, a touch switch, a spring, and a grating transmitter. The grating transmitter is installed at the bottom of the lower inner side of the protective door mounting frame. The spring is located on the top surface of the grating transmitter. The force-bearing block is sleeved on the spring and positioned above the spring. The touch switch is installed at the top of the lower inner side of the protective door mounting frame. The force-bearing block has a grating transmitter adapter hole covered with tempered glass. A grating receiver is installed at the bottom of the protective door. The grating receiver has grating receiver units corresponding to the grating transmitters.

[0006] Preferably, an air pump is installed on each of the lower outer sides of the protective door mounting frame, and the air outlet of the air pump faces the anti-pinch monitoring unit.

[0007] Preferably, a transmission module is embedded in the middle of the protective door. The transmission module contains a lithium battery for power supply, a receiving coil for wirelessly charging the lithium battery, and a wireless data transmission module for transmitting signals from the grating receiver. A receiving control module is installed on the inner side of the compartment. The receiving control module contains a power supply coil for wirelessly charging the lithium battery, a signal receiving module for receiving signals from the wireless data transmission module, and a PLC controller for controlling the braking mechanism of the protective door.

[0008] Preferably, the protective door braking mechanism consists of an electric push rod mounting base, an electric push rod, and a brake pad. The electric push rod mounting base is fixed to the body, the electric push rod is fixed to the electric push rod mounting base, and the brake pad is fixed to the telescopic end of the electric push rod.

[0009] Preferably, the lower inner side of the protective door mounting frame has multiple equally spaced grating transmitter mounting slots, and the lower inner side of the protective door mounting frame has a force-bearing block limiting slot. Each grating transmitter mounting slot corresponds to two touch switches. Each side of the force-bearing block has a limiting edge that cooperates with the force-bearing block limiting slot.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows: Multiple anti-pinch monitoring units are installed on the lower inner side of the protective door mounting frame. Each anti-pinch monitoring unit consists of a force-bearing block, a touch switch, a spring, and a grating transmitter. When in operation, the force-bearing block presses the touch switch upward under the action of the spring, keeping the touch switch closed. When the protective door is closed, all the touch switches will be opened, and when the protective door is opened, all the touch switches will be closed. If the touch switch on one or more anti-pinch monitoring units is opened, it indicates that an object is pressing on the protective door mounting frame, which will hinder the closing of the protective door. The multiple anti-pinch monitoring units can make the monitoring more sensitive. In addition, the multiple anti-pinch monitoring units and the grating receiver can form a grating screen. When the grating receiver at a certain position cannot receive the grating, it indicates that an object is obstructing the closing of the protective door.

[0011] To prevent dust from obscuring the grating transmitter adapter hole on the stress block, an air pump is installed on each of the lower outer sides of the protective door mounting frame. The air pump can blow away the dust on the anti-pinch monitoring unit. Attached Figure Description

[0012] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a structural schematic diagram of the protective door mounting frame of this utility model;

[0015] Figure 3 This is a schematic diagram of the installation structure of the protective door frame and the anti-pinch monitoring unit of this utility model;

[0016] Figure 4 This is a schematic diagram of the structure of the lower inner side of the protective door mounting frame of this utility model;

[0017] Figure 5 This is a structural schematic diagram of the force-bearing block of this utility model.

[0018] In the diagram: 1. Body; 2. Transmission module; 3. Protective door; 4. Grating receiver; 5. Receiver control module; 6. Protective door mounting frame; 7. Electric push rod mounting base; 8. Electric push rod; 9. Brake pad; 10. Air pump; 11. Anti-pinch monitoring unit; 12. Grating transmitter; 13. Spring; 14. Force block; 15. Touch switch; 16. Grating transmitter mounting slot; 17. Limiting edge; 18. Force block limiting slot; 19. Grating transmitter adapter hole. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely represents selected embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0020] Please see Figure 1-5In this embodiment of the present invention, an intelligent anti-pinch device for a construction hoist includes a car body 1, a protective door 3, and a protective door mounting frame 6. The protective door mounting frame 6 is fixed to the entrance and exit of the car body 1. The protective door 3 is movably mounted on the protective door mounting frame 6. A protective door brake mechanism is installed on each of the upper sides of the protective door mounting frame 6. Multiple anti-pinch monitoring units 11 are installed on the lower inner side of the protective door mounting frame 6. Each anti-pinch monitoring unit 11 includes a force-bearing block 14, a touch switch 15, a spring 13, and a grating sensor. The grating transmitter 12 is installed on the bottom inner side of the protective door mounting frame 6. The spring 13 is set on the top surface of the grating transmitter 12. The force block 14 is sleeved on the spring 13 and located above the spring 13. The touch switch 15 is installed on the top inner side of the protective door mounting frame 6. The force block 14 is provided with a grating transmitter adapter hole 19 covered with tempered glass. The bottom of the protective door 3 is equipped with a grating receiver 4. The grating receiver 4 is provided with a grating receiver unit that corresponds one-to-one with the grating transmitter 12.

[0021] An air pump 10 is installed on each of the lower outer sides of the protective door mounting frame 6. The air outlet of the air pump 10 faces the anti-pinch monitoring unit 11. The anti-pinch monitoring unit 11 consists of a force-bearing block 14, a touch switch 15, a spring 13, and a grating transmitter 12. When it is running, the force-bearing block 14 presses the touch switch 15 upward under the action of the spring 13, keeping the touch switch 15 in a closed state. When the protective door 3 is closed, all the touch switches 15 will be opened. When the protective door 3 is opened, all the touch switches 15 will be closed. If the touch switch 15 on one or more anti-pinch monitoring units 11 is opened, it means that an object is pressing on the protective door mounting frame 6, which will hinder the closing of the protective door 3. The multiple anti-pinch monitoring units 11 can make the monitoring more sensitive. In addition, the multiple anti-pinch monitoring units 11 and the grating receiver 4 can form a grating screen. When the grating receiver at a certain position cannot receive the grating, it means that an object is obstructing the closing of the protective door 3.

[0022] The protective door 3 has a transmission module 2 embedded in its middle. The transmission module 2 contains a lithium battery for power supply, a receiving coil for wireless charging of the lithium battery, and a wireless data transmission module for transmitting signals from the grating receiver 4. The receiving control module 5 is installed on the inner side of the compartment 1. The receiving control module 5 contains a power supply coil for wireless charging of the lithium battery, a signal receiving module for receiving signals from the wireless data transmission module, and a PLC controller for controlling the braking mechanism of the protective door. The PLC controller is electrically connected to the anti-pinch monitoring unit 11 and the air pump 10.

[0023] The protective door braking mechanism consists of an electric push rod mounting base 7, an electric push rod 8, and a brake pad 9. The electric push rod mounting base 7 is fixed on the body 1, the electric push rod 8 is fixed on the electric push rod mounting base 7, and the brake pad 9 is fixed on the telescopic end of the electric push rod 8.

[0024] Multiple grating transmitter mounting slots 16 are evenly spaced on the bottom inner side of the protective door mounting frame 6. A force-bearing block limiting slot 18 is provided on the bottom inner side of the protective door mounting frame 6. Each grating transmitter mounting slot 16 corresponds to two touch switches 15. A limiting edge 17 that cooperates with the force-bearing block limiting slot 18 is provided on each of the two sides below the force-bearing block 14.

[0025] The working principle of this utility model is as follows: Multiple anti-pinch monitoring units 11 are installed on the lower inner side of the protective door mounting frame 6. Each anti-pinch monitoring unit 11 consists of a force-bearing block 14, a touch switch 15, a spring 13, and a grating transmitter 12. When it is running, the force-bearing block 14 presses the touch switch 15 upward under the action of the spring 13, keeping the touch switch 15 closed. When the protective door 3 is closed, all the touch switches 15 will be disconnected. When the protective door 3 is opened, all the touch switches 15 will be closed. If the touch switch 15 on one or more anti-pinch monitoring units 11 is disconnected, it means that an object is pressing on the protective door mounting frame 6, which will hinder the closing of the protective door 3. The multiple anti-pinch monitoring units 11 can make the monitoring more sensitive. In addition, the multiple anti-pinch monitoring units 11 and the grating receiver 4 can form a grating screen. When the grating receiver unit at a certain position cannot receive the grating, it means that an object is obstructing the closing of the protective door 3.

[0026] To prevent dust from obscuring the grating transmitter adapter hole 19 on the force-bearing block 14, an air pump 10 is installed on each of the lower outer sides of the protective door mounting frame 6. The air pump 10 can blow away the dust on the anti-pinch monitoring unit 11.

[0027] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An intelligent anti-pinch device for a construction hoist, comprising a car body (1), a protective door (3), and a protective door mounting frame (6), wherein the protective door mounting frame (6) is fixed to the entrance and exit of the car body (1), the protective door (3) is movably mounted on the protective door mounting frame (6), and a protective door braking mechanism is installed on each of the upper sides of the protective door mounting frame (6), characterized in that: Multiple anti-pinch monitoring units (11) are installed on the lower inner side of the protective door mounting frame (6). Each anti-pinch monitoring unit (11) includes a force block (14), a touch switch (15), a spring (13), and a grating transmitter (12). The grating transmitter (12) is installed on the lower inner bottom of the protective door mounting frame (6). The spring (13) is located on the top surface of the grating transmitter (12). The force block (14) is sleeved on the spring (13) and located above the spring (13). The touch switch (15) is installed on the lower inner top of the protective door mounting frame (6). The force block (14) is provided with a grating transmitter adapter hole (19) covered with tempered glass. A grating receiver (4) is installed at the bottom of the protective door (3). The grating receiver (4) is provided with a grating receiver unit that corresponds one-to-one with the grating transmitter (12).

2. The intelligent anti-pinch device for a construction hoist according to claim 1, characterized in that: An air pump (10) is installed on each of the lower outer sides of the protective door mounting frame (6), and the air outlet of the air pump (10) faces the anti-pinch monitoring unit (11).

3. The intelligent anti-pinch device for a construction hoist according to claim 1, characterized in that: The protective door (3) has a transmission module (2) embedded in its middle. The transmission module (2) is equipped with a lithium battery for power supply, a receiving coil for wireless charging of the lithium battery, and a wireless data transmission module for transmitting signals from the grating receiver (4). The inner side of the compartment (1) is equipped with a receiving control module (5). The receiving control module (5) is equipped with a power supply coil for wireless charging of the lithium battery, a signal receiving module for receiving signals from the wireless data transmission module, and a PLC controller for controlling the braking mechanism of the protective door.

4. The intelligent anti-pinch device for a construction hoist according to claim 1, characterized in that: The protective door braking mechanism consists of an electric push rod mounting base (7), an electric push rod (8), and a brake pad (9). The electric push rod mounting base (7) is fixed on the body (1), the electric push rod (8) is fixed on the electric push rod mounting base (7), and the brake pad (9) is fixed on the telescopic end of the electric push rod (8).

5. The intelligent anti-pinch device for a construction hoist according to claim 1, characterized in that: The lower inner side of the protective door mounting frame (6) has multiple equally spaced grating transmitter mounting slots (16), and the lower inner side of the protective door mounting frame (6) has a force-bearing block limiting slot (18). Each grating transmitter mounting slot (16) corresponds to two touch switches (15). Each side of the force-bearing block (14) has a limiting edge (17) that cooperates with the force-bearing block limiting slot (18).

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