A material hoist protection door with automatic opening and closing device

Abstract

The application provides a material hoist protection door with an automatic switch device, which comprises a support seat, the support seat comprises a first support column, a protection plate, a first bottom plate, a connecting plate, a second bottom plate, a connecting block and a second support column, the first bottom plate is slidably connected with the second bottom plate through the connecting plate, the protection plate is arranged on the upper end faces of the first bottom plate and the second bottom plate, the first support column is rotatably connected to the upper end face of the first bottom plate away from the second bottom plate, the connecting block is fixedly connected to the upper end face of the second bottom plate away from the first bottom plate, the second support column is rotatably connected to the upper end face of the connecting block, and the upper end face of the support seat is fixedly connected with a control seat, the control seat comprises a control seat body, an infrared monitor, a servo motor, a rotating connecting head, a belt, a support groove, a main shaft and a storage groove. The application effectively reduces the safety ability of the protection door, the device can be stored, and the protection door is convenient to disassemble and assemble.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of construction safety protection, in particular to a material hoist protection door with automatic opening and closing device. BACKGROUND

[0002] The material loading port of the gantry and wellhead material hoist commonly used in construction sites in China has certain risks, mainly due to falling objects at the basket or other floor unloading ports, which can easily cause personal injury accidents. With the continuous expansion of urban building development, safety production accidents often occur at construction sites, and serious accidents even result in personal injury and death. Among many accidents, safety accidents often occur at the unloading platform of the upper and lower frames. However, the existing safety protection doors of the unloading platform of the upper and lower frames are difficult to solve this problem due to their own structure.

[0003] The overall structure of the existing material hoist protection door adopts square steel pipe welding, and the device cannot be recycled. The installation and removal are very inconvenient. At the same time, the existing material hoist protection door is mostly opened and closed manually. When the basket rises to the floor where the material is to be carried, the worker needs to open the protection door, and after the material is unloaded, the protection door is closed. Manual opening and closing is very troublesome, which seriously reduces the working efficiency of the material hoist. Moreover, the existing material hoist protection door is welded from square steel pipe and steel mesh. When the material hoist and the protection door fail to operate, violent destruction of the protection door is required during rescue, which seriously prolongs the rescue time. SUMMARY

[0004] (I) Technical solution

[0005] To achieve the above object, the present application is realized by the following technical scheme: A material hoist protection door with automatic opening and closing device, comprising a support seat, the support seat comprises a first support column, a protection plate, a first bottom plate, a connecting plate, a second bottom plate, a connecting block and a second support column, the first bottom plate is slidably connected with the second bottom plate through the connecting plate, the protection plate is arranged on the upper end face of the first bottom plate and the second bottom plate, the first support column is rotatably connected on the upper end face of the first bottom plate away from the second bottom plate, the connecting block is fixedly connected on the upper end face of the second bottom plate away from the first bottom plate, and the second support column is rotatably connected on the upper end face of the connecting block; the upper end face of the support seat is fixedly connected with a control seat, the control seat comprises a control seat body, an infrared monitor, a servo motor, a rotating connecting head, a belt, a support groove, a main shaft and a storage groove, the infrared monitor is fixedly connected on one side of the upper end face of the control seat body, the servo motor is fixedly connected on the other side of the upper end face of the control seat body, the rotating connecting head is fixedly connected on the output end of the servo motor, the support groove is arranged on the side end face of the control seat body, the storage groove is arranged on the lower end face of the control seat body, the main shaft is rotatably connected on the inner wall of the storage groove, the belt is installed on the rotating connecting head and the main shaft, and the fixed groove is arranged on the side end face of the main shaft; the lower end face of the control seat is provided with a protection door, the control seat comprises a protection door body, a barrier net fixing groove, a barrier net, a tear opening and a dotted line opening, the barrier net fixing groove is arranged on the front end face of the protection door body, the barrier net is fixedly connected on the inner wall of the barrier net fixing groove, the tear opening is symmetrically arranged on both sides of the front end face of the protection door body, and the dotted line opening is arranged on the front end face of the protection door body; one group of fixed triangular columns is fixedly connected on the front end face and the rear end face of the control seat.

[0006] As a further preferred, at least one group of threaded holes are arranged on the front end face of the protection plate, the first bottom plate and the second bottom plate, the fixed triangular columns are fixedly connected with the protection plate, the first bottom plate and the second bottom plate through bolts, and the protection plate is slidably connected on the upper end face of the first bottom plate and the second bottom plate, and the upper end face of the protection plate is flush with the highest point of the fixed triangular column.

[0007] As a further preferred, the height of the connecting block is equal to the thickness of the first support column, and the upper end faces of the first support column and the second support column are on the same horizontal plane.

[0008] As a further preferred, the support grooves are symmetrically arranged on both sides of the control seat body, the two groups of support grooves are respectively fixedly connected with the first support column and the second support column, and the first support column and the second support column are fixedly connected in the support grooves through long bolts.

[0009] As a further preferred, the infrared monitor is electrically connected with the servo motor, and the servo motor is controlled to start after the infrared monitor detects the material hoist for 30 seconds.

[0010] As a further optimization, the main shaft is fixedly connected with the support base through a fixing groove, which is a triangular groove.

[0011] As a further optimization, the blocking net is fixedly connected to the inner wall of the blocking net fixing groove, and the blocking net is embedded in the inner wall of the blocking net fixing groove by 5 cm.

[0012] As a further optimization, the tear opening is symmetrically provided in two groups on both sides of the front end face of the protective door body.

[0013] As a further optimization, the at least one group of dotted lines is uniformly provided on the front end face of the protective door body, and the at least one group of dotted lines forms a "U" shape on the front end face of the protective door body, the two ends of the "U" shape are adjacent to the two groups of tear openings respectively, and the height of the "U" shape is 1-1.5 m.

[0014] As a further optimization, the distance between the at least one group of dotted lines is 0.2-0.4 mm.

[0015] (B) Beneficial effects

[0016] The present application provides a material lifting machine protective door with automatic opening and closing device and its use method, which has the following beneficial effects:

[0017] 1. The device is slidably connected by the first bottom plate and the second bottom plate through the connecting plate, so that the distance between the first bottom plate and the second bottom plate can be adjusted, the first support column is rotatably connected to the upper end face of the first bottom plate away from the second bottom plate, the connecting block is fixedly connected to the upper end face of the second bottom plate away from the first bottom plate, the second support column is rotatably connected to the upper end face of the connecting block, the height of the connecting block is equal to the thickness of the first support column, and the upper end faces of the first support column and the second support column are on the same horizontal plane. The first support column and the second support column are accommodated in the upper end faces of the first bottom plate and the second bottom plate by rotating, so that the support base can be accommodated, and the device is very convenient for recycling installation, removal and transfer, solving the problem that the overall structure of the existing material lifting machine protective door adopts square steel pipe welding, the device cannot be recycled, and the installation and removal are very inconvenient.

[0018] 2、Through the fixed connection of infrared monitor and servo motor on the upper end surface of control seat body, the output end of servo motor is fixedly connected with a rotating connector, a storage groove is opened on the lower end surface of control seat body, a main shaft is rotatably connected to the inner wall of storage groove, a belt is installed between rotating connector and main shaft, the main shaft can be rotated through rotating connector by servo motor, a fixed groove is opened on the side end surface of main shaft, the protective door is fixedly connected to the fixed groove through the main shaft, so that the servo motor can control the lifting of protective door, the infrared monitor is electrically connected with servo motor, and the servo motor is controlled to start after the infrared monitor detects the material lifting machine for 30 seconds, and then the servo motor controls the main shaft to roll up the protective door when the material lifting machine lifts the material in front of the infrared monitor for 30 seconds, thereby effectively improving the use efficiency of material lifting machine, solving the problem that the opening of protective door of existing material lifting machine is mostly manual, when the basket rises to the floor where the material is to be carried, the worker needs to open the protective door, and after unloading the material, the protective door is closed, which is very troublesome and seriously reduces the working efficiency of material lifting machine.

[0019] 3、Through the opening of fixed groove on the side end surface of main shaft, the fixed groove is fixedly connected with protective door, and the fixed groove makes the rolling of main shaft on protective door more smooth.

[0020] 4、Through the opening of barrier net fixed groove on the front end surface of protective door body, the barrier net is fixedly connected to the inner wall of barrier net fixed groove, the barrier net is embedded in the inner wall of barrier net fixed groove by 5 cm, so that the barrier net is fixedly connected to the barrier net fixed groove, a group of tear openings are opened on both sides of the front end surface of protective door body, at least one group of dotted openings are evenly opened on the front end surface of protective door body, at least one group of dotted openings are evenly opened on the front end surface of protective door body, and the height of the "U" type is 1-1.5 m, the distance between at least one group of dotted openings is 0.2-0.4 mm, so that the protective door body can be torn along the trajectory of dotted openings through tear openings, thereby avoiding danger through tearing dotted openings in emergency, solving the problem that the protective door of existing material lifting machine is made of square steel pipe and steel net welding, when the material lifting machine and protective door fail to operate, the protective door needs to be violently destroyed during rescue, which seriously prolongs the rescue time. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is the overall structure schematic diagram of the device body of the application;

[0022] Figure 2 It is the support seat structure schematic diagram of the device of the application;

[0023] Figure 3 It is the control seat structure schematic diagram of the device of the application;

[0024] Figure 4 Fig. 2 is a sectional view of the control seat of the device of the present application;

[0025] Figure 5 Fig. 3 is a schematic view of the main shaft structure of the device of the present application;

[0026] Figure 6 Fig. 4 is a schematic view of the protective door structure of the device of the present application.

[0027] In the figure: 1 control seat, 2 protective door, 3 support seat, 4 fixed triangular column, 5 first support column, 6 protective plate, 7 first bottom plate, 8 connecting plate, 9 second bottom plate, 10 connecting block, 11 second support column, 12 control seat body, 13 infrared monitor, 14 servo motor, 15 rotating connecting head, 16 belt, 17 support groove, 18 main shaft, 19 storage groove, 20 fixed groove, 21 protective door body, 22 barrier net fixed groove, 23 barrier net, 24 tear opening, 25 dotted line opening. DETAILED DESCRIPTION

[0028] Embodiments of the present application are described in detail below with reference to the attached drawings, which show by way of example embodiments in which like numerals indicate like elements or elements having the same or similar function. The embodiments described below are examples only, and are not to be construed as limiting the present application.

[0029] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be construed as limiting the present application. In addition, the terms "first", "second" are only for the purpose of description, and cannot be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0030] In the description of the application, it is necessary to point out that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "linking" should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integral connection; it can be mechanical connection, or electrical connection or can communicate with each other; it can be directly connected, or indirectly connected through intermediate medium, it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0031] In the present application, unless otherwise explicitly specified and limited, the "upper" or "lower" of the first feature to the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the "upper", "above" and "on" of the first feature to the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The "below", "under" and "under" of the first feature to the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0032] The following disclosure provides many different embodiments or examples for implementing different structures of the application. In order to simplify the disclosure of the application, the components and settings of specific examples are described in the following. Of course, they are only examples, and the purpose is not to limit the application. In addition, the application can repeatedly refer to numbers and / or letters in different examples. Such repetition is for the purpose of simplification and clarity, and in itself does not indicate the relationship between the various embodiments and / or settings discussed. In addition, the application provides examples of various specific processes and materials, but those skilled in the art can realize the application of other processes and / or the use of other materials.

[0033] The embodiment of the present application provides a material hoist protection door with an automatic opening and closing device, which comprises a support base 3, the support base 3 comprises a first support column 5, a protection plate 6, a first bottom plate 7, a connecting plate 8, a second bottom plate 9, a connecting block 10 and a second support column 11, the first bottom plate 7 is slidably connected with the second bottom plate 9 through the connecting plate 8, the protection plate 6 is arranged on the upper end faces of the first bottom plate 7 and the second bottom plate 9, the first support column 5 is rotatably connected to the upper end face of the first bottom plate 7 away from the second bottom plate 9, the connecting block 10 is fixedly connected to the upper end face of the second bottom plate 9 away from the first bottom plate 7, and the second support column 11 is rotatably connected to the upper end face of the connecting block 10, and the upper end face of the support base 3 is fixedly connected with a control base 1, the control base 1 comprises a control base body 12, an infrared monitor 13, a servo motor 14, a rotating connecting head 15, a belt 16, a support groove 17, a main shaft 18 and a storage groove 19, the infrared monitor 13 is fixedly connected to one side of the upper end face of the control base body 12, the servo motor 14 is fixedly connected to the other side of the upper end face of the control base body 12, the rotating connecting head 15 is fixedly connected to the output end of the servo motor 14, the support groove 17 is arranged on the side end face of the control base body 12, the storage groove 19 is arranged on the lower end face of the control base body 12, the main shaft 18 is rotatably connected to the inner wall of the storage groove 19, the belt 16 is installed on the rotating connecting head 15 and the main shaft 18, and the fixed groove 20 is arranged on the side end face of the main shaft 18, and the lower end face of the control base 1 is provided with a protection door 2, the control base 1 comprises a protection door body 21, a barrier net fixing groove 22, a barrier net 23, a tearing opening 24 and a dotted line opening 25, the barrier net fixing groove 22 is arranged on the front end face of the protection door body 21, the barrier net 23 is fixedly connected to the inner wall of the barrier net fixing groove 22, the tearing opening 24 is symmetrically arranged on the two sides of the front end face of the protection door body 21, the dotted line opening 25 is arranged on the front end face of the protection door body 21, and one group of fixed triangular columns 4 is fixedly connected to the front end face and the rear end face of the control base 1.

[0034] In the embodiment, at least one group of threaded holes are arranged on the front end faces of the protection plate 6, the first bottom plate 7 and the second bottom plate 9, the fixed triangular columns 4 are fixedly connected with the protection plate 6, the first bottom plate 7 and the second bottom plate 9 through bolts, the protection plate 6 is slidably connected to the upper end faces of the first bottom plate 7 and the second bottom plate 9, the upper end face of the protection plate 6 is flush with the highest point of the fixed triangular column 4, so that the support base 3 and the fixed triangular column 4 are simple to disassemble and assemble, and the protection plate 6 can effectively prevent the fixed triangular column 4 from being damaged due to pressure.

[0035] Specifically, the height of the connecting block 10 is equal to the thickness of the first support column 5, so that the first support column 5 and the second support column 11 can be stored on the upper end faces of the first bottom plate 7 and the second bottom plate 9 after being rotated, and the upper end faces of the first support column 5 and the second support column 11 are on the same horizontal plane, and the control base 1 is supported by the first support column 5 and the second support column 11.

[0036] In the embodiment, the support grooves 17 are symmetrically arranged on both sides of the control seat body 12, and the two groups of support grooves 17 are fixedly connected with the first support column 5 and the second support column 11 respectively, and the first support column 5 and the second support column 11 are fixedly connected in the support grooves 17 by long bolts.

[0037] Specifically, the infrared monitor 13 is electrically connected with the servo motor 14, and after the infrared monitor 13 detects the existence of the material lifting machine for 30 seconds, the servo motor 14 is controlled to start, and the lifting of the protective door 2 can be controlled through the servo motor 14.

[0038] Further, the main shaft 18 is fixedly connected with the support seat 3 through the fixing groove 20, and the fixing groove 20 is a triangular groove, and the rolling of the protective door 2 is smoother through the main shaft 18.

[0039] In the embodiment, the blocking net 23 is fixedly connected to the inner wall of the blocking net fixing groove 22, and the blocking net 23 is embedded in the inner wall of the blocking net fixing groove 22 by 5 cm, so as to ensure the close fixing of the blocking net 23 and the blocking net fixing groove 22.

[0040] Specifically, the tear opening 24 is symmetrically arranged on both sides of the front end face of the protective door body 21.

[0041] Further, at least one group of dotted line openings 25 are evenly arranged on the front end face of the protective door body 21, and at least one group of dotted line openings 25 form a "U" shape on the front end face of the protective door body 21, the two ends of the "U" shape are adjacent to the two groups of tear openings 24 respectively, and the height of the "U" shape is 1-1.5 m, and a crack can be torn on the protective door body 21 through the dotted line opening 25.

[0042] Further, the distance between the at least one group of dotted line openings 25 is 0.2-0.4 mm, which can ensure that the dotted line opening 25 will not be easily torn open in normal use, but the tearing will not be too difficult.

[0043] Working principle: when using, move the device parts to the appropriate place, pull the first bottom plate 7 and the second bottom plate 9 apart through the connecting plate 8, then expand the first support column 5 and the second support column 11 by rotating, place the protection plate 6 on the end face of the first bottom plate 7, fix the triangular column 4 with the protection plate 6, the first bottom plate 7 and the second bottom plate 9 through bolts, fix the first support column 5, the second support column 11 and the support groove 17 through long bolts, so that the control seat 1 is above the support seat 3, fix the main shaft 18 and the protective door 2 through the fixing groove 20, complete the assembly of the device, the infrared monitor 13 detects the existence of the material lifting machine for 30s, the servo motor 14 controls the main shaft 18 to roll up the protective door 2, which is convenient for the transportation of materials, after the materials are removed, the servo motor 14 controls the main shaft 18 to put down the protective door 2 and close the protective door, in case of emergency, the personnel tear the protective door body 21 through the tear 24 and the trace of the virtual line 25, which is convenient for the emergency of personnel.

[0044] In summary, the material lifting machine protective door with automatic opening and closing device, first, the device is connected through the first bottom plate 7 and the second bottom plate 9 through the connecting plate 8, so that the distance between the first bottom plate 7 and the second bottom plate 9 can be adjusted, the first support column 5 is rotatably connected to the end face of the first bottom plate 7 away from the second bottom plate 9, the connecting block 10 is fixedly connected to the end face of the second bottom plate 9 away from the first bottom plate 7, the second support column 11 is rotatably connected to the end face of the connecting block 10, the height of the connecting block 10 is equal to the thickness of the first support column 5, the upper end faces of the first support column 5 and the second support column 11 are in the same horizontal plane, the first support column 5 and the second support column 11 are accommodated in the upper end faces of the first bottom plate 7 and the second bottom plate 9 by rotating, so that the support seat 3 can be accommodated, and the device is convenient for recycling, installation and removal.

[0045] Secondly, an infrared monitor 13 and a servo motor 14 are fixedly connected to the upper end face of the control base body 12. A rotating connector 15 is fixedly connected to the output end of the servo motor 14. A storage groove 19 is opened on the lower end face of the control base body 12. A main shaft 18 is rotatably connected to the inner wall of the storage groove 19. A belt 16 is installed between the rotating connector 15 and the main shaft 18. The servo motor 14 can rotate the main shaft 18 through the rotating connector 15. At the same time, a fixing groove 20 is opened on the side end face of the main shaft 18. A protective door 2 is fixedly connected to the main shaft 18 through the fixing groove 20, so that the servo motor 14 can control the raising and lowering of the protective door 2, and the infrared monitor... The device 13 is electrically connected to the servo motor 14. After the infrared monitor 13 detects the presence of the material hoist for 30 seconds, it controls the servo motor 14 to start. Then, after the material hoist lifts the material to the front of the infrared monitor 13 for 30 seconds, the servo motor 14 controls the main shaft 18 to rewind the protective door 2. This effectively improves the efficiency of the material hoist and solves the problem that the opening and closing of the protective door of the existing material hoist is mostly done manually. When the basket rises to the floor where the material is to be transported, the worker needs to open the protective door, unload the material, and then close the protective door. Manual opening and closing is very troublesome and seriously reduces the working efficiency of the material hoist.

[0046] Furthermore, by opening a fixing groove 20 on the side end face of the main shaft 18, the main shaft 18 is raised to fix the fixing groove 20 to the protective door 2, and the fixing groove 20 is raised to make the main shaft 18 roll up the protective door 2 more smoothly.

[0047] Furthermore, by opening a mesh fixing groove 22 on the front face of the protective door body 21, a mesh 23 is fixedly connected to the inner wall of the mesh fixing groove 22, with the mesh 23 embedded 5cm into the inner wall of the mesh fixing groove 22, ensuring a tight fixation between the mesh 23 and the mesh fixing groove 22. Simultaneously, a set of tear-out openings 24 are provided on each side of the front face of the protective door body 21, and at least one set of dotted lines 25 are also evenly provided on the front face of the protective door body 21. At least one set of dotted lines 25 is evenly provided on the front face of the protective door body 21, and at least one set of dotted lines 25 forms a "..." on the front face of the protective door body 21. The U-shaped structure has two ends adjacent to two sets of tear openings 24, and the height of the U-shape is 1-1.5m. The spacing between at least one set of dotted openings 25 is 0.2-0.4mm, which allows the protective door body 21 to be torn open along the trajectory of the dotted openings 25 through the tear openings 24. In case of emergency, the body can be evacuated by tearing open the dotted openings 25. This solves the problem that the existing material hoist protective door is made of square steel pipe and steel mesh welded together. When the material hoist and protective door malfunction and cannot operate, the protective door needs to be forcibly destroyed during rescue, which seriously prolongs the rescue time.

[0048] While embodiments of the application have been shown and described, it is to be understood that the embodiments described are merely exemplary of the principles and application of the present application. Numerous modifications and adaptions can be effected without departing from the spirit and scope of the present application, which is not limited to the exact construction and arrangement described. It is intended, therefore, to cover all modifications and adaptions that fall within the scope of the claims and their equivalents.

Claims

1. A protective door for a material hoist with an automatic opening and closing device, comprising a support base (3), characterized in that: The support base (3) includes a first support column (5), a protective plate (6), a first base plate (7), a connecting plate (8), a second base plate (9), a connecting block (10), and a second support column (11). The first base plate (7) is slidably connected to the second base plate (9) through the connecting plate (8). The protective plate (6) is disposed on the upper end face of the first base plate (7) and the second base plate (9). The first support column (5) is rotatably connected to the side of the upper end face of the first base plate (7) away from the second base plate (9). The connecting block (10) is fixedly connected to the upper end face of the second base plate (9). On the side away from the first base plate (7), the second support column (11) is rotatably connected to the upper end face of the connecting block (10). The upper end face of the support base (3) is fixedly connected to the control base (1). The control base (1) includes a control base body (12), an infrared monitor (13), a servo motor (14), a rotating connector (15), a belt (16), a support groove (17), a main shaft (18), and a storage groove (19). The infrared monitor (13) is fixedly connected to one side of the upper end face of the control base body (12), and the servo motor (14) is fixedly connected to the control base. On the other side of the upper end face of the main body (12), the rotating connector (15) is fixedly connected to the output end of the servo motor (14). The support groove (17) is opened on the side end face of the control seat main body (12). The storage groove (19) is opened on the lower end face of the control seat main body (12). The main shaft (18) is rotatably connected to the inner wall of the storage groove (19). The belt (16) is installed on the rotating connector (15) and the main shaft (18). The fixing groove (20) is opened on the side end face of the main shaft (18). A protective door (2) is provided on the lower end face of the control seat (1). The control base (1) includes a protective door body (21), a net fixing groove (22), a net (23), a tear opening (24), and a dotted line opening (25). The net fixing groove (22) is opened on the front end face of the protective door body (21). The net (23) is fixedly connected to the inner wall of the net fixing groove (22). Two sets of tear openings (24) are symmetrically opened on both sides of the front end face of the protective door body (21). The dotted line opening (25) is opened on the front end face of the protective door body (21). A set of fixed triangular pillars (4) are fixedly connected to the front end face and the rear end face of the control base (1).

2. A material hoist protective door with an automatic opening and closing device according to claim 1, characterized in that: The front end faces of the protective plate (6), the first base plate (7), and the second base plate (9) are each provided with at least one set of threaded holes. The fixed triangular prism (4) is fixedly connected to the protective plate (6), the first base plate (7), and the second base plate (9) by bolts. The protective plate (6) is slidably connected to the upper end faces of the first base plate (7) and the second base plate (9). The upper end face of the protective plate (6) is flush with the highest point of the fixed triangular prism (4).

3. A material hoist protective door with an automatic opening and closing device according to claim 1, characterized in that: The height of the connecting block (10) is equal to the thickness of the first support column (5), and the upper surfaces of the first support column (5) and the second support column (11) are on the same horizontal plane.

4. A material hoist protective door with an automatic opening and closing device according to claim 1, characterized in that: The support grooves (17) are symmetrically arranged on both sides of the control seat body (12) in two sets. The two sets of support grooves (17) are fixedly connected to the first support column (5) and the second support column (11) respectively. The first support column (5) and the second support column (11) are both fixedly connected to the inside of the support grooves (17) by long bolts.

5. A material hoist protective door with an automatic opening and closing device according to claim 1, characterized in that: The infrared monitor (13) is electrically connected to the servo motor (14), and the infrared monitor (13) controls the servo motor (14) to start after detecting the presence of the material elevator for 30 seconds.

6. A material hoist protective door with an automatic opening and closing device according to claim 1, characterized in that: The main shaft (18) is fixedly connected to the support base (3) through a fixing groove (20), and the fixing groove (20) is a triangular groove.

7. A material hoist protective door with an automatic opening and closing device according to claim 1, characterized in that: The main body (21) of the protective door is made of flexible material, and the net (23) is specifically a metal mesh. The net (23) is fixedly connected to the inner wall of the net fixing groove (22), and the net (23) is embedded 5cm into the inner wall of the net fixing groove (22).

8. A material hoist protective door with an automatic opening and closing device according to claim 1, characterized in that: The tear (24) is symmetrically opened in two sets on both sides of the front end face of the main body of the protective door (21).

9. A material hoist protective door with an automatic opening and closing device according to claim 8, characterized in that: At least one set of the dotted openings (25) are evenly opened on the front end face of the protective door body (21), and at least one set of dotted openings (25) forms a "U" shape on the front end face of the protective door body (21). The two ends of the "U" shape are adjacent to two sets of tear openings (24), and the height of the "U" shape is 1-1.5m.

10. A material hoist protective door with an automatic opening and closing device according to claim 9, characterized in that: The spacing between the at least one set of dashed openings (25) is 0.2-0.4 mm.

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