阅读说明：本技术 一种具有自动开关装置的物料提升机防护门 (Material hoist guard gate with automatic switching device ) 是由 王金龙 韦佑鑫 杨方杰 史文杰 殷志鹏 周姗姗 程光辉 高雅 韩超 马延恒 于 2021-09-09 设计创作，主要内容包括：本发明提供一种具有自动开关装置的物料提升机防护门,包括支撑座,所述支撑座包括第一支撑柱、保护板、第一底板、连接板、第二底板、连接块和第二支撑柱,所述第一底板通过连接板与第二底板滑动连接,所述保护板设置在第一底板和第二底板的上端面,所述第一支撑柱转动连接在第一底板上端面背离第二底板一侧,所述连接块固定连接在第二底板上端面背离第一底板一侧,所述第二支撑柱转动连接在连接块上端面,所述支撑座上端面固定连接有控制座,所述控制座包括控制座主体、红外监控器、伺服电机、转动连接头、皮带、支撑槽、主轴和收纳槽,该发明有效降低了防护门的避险能力,同时装置可收纳,也使得防护门拆装方便。(The invention provides a material hoister protective door with an automatic switch device, which comprises a supporting seat, wherein the supporting seat comprises a first supporting column, a protective plate, a first bottom plate, a connecting plate, a second bottom plate, a connecting block and a second supporting column, the first bottom plate is connected with the second bottom plate in a sliding way through the connecting plate, the protective plate is arranged on the upper end surfaces of the first bottom plate and the second bottom plate, the first supporting column is rotatably connected to one side, away from the second bottom plate, of the upper end surface of the first bottom plate, the connecting block is fixedly connected to one side, away from the first bottom plate, of the upper end surface of the second bottom plate, the second supporting column is rotatably connected to the upper end surface of the connecting block, a control seat is fixedly connected to the upper end surface of the supporting seat, the control seat comprises a control seat main body, an infrared monitor, a servo motor, a rotary connecting head, a belt, a supporting groove, a main shaft and a containing groove, the invention effectively reduces the risk avoiding capability of the protective door, meanwhile, the device can be stored, so that the protective door is convenient to disassemble and assemble.)

1. The utility model provides a material hoist guard gate with automatic switching device, includes supporting seat (3), its characterized in that: supporting seat (3) includes first support column (5), protection shield (6), first bottom plate (7), connecting plate (8), second bottom plate (9), connecting block (10) and second support column (11), first bottom plate (7) pass through connecting plate (8) and second bottom plate (9) sliding connection, protection shield (6) set up the up end at first bottom plate (7) and second bottom plate (9), first support column (5) rotate to be connected and deviate from second bottom plate (9) one side at first bottom plate (7) up end, connecting block (10) fixed connection deviates from first bottom plate (7) one side at second bottom plate (9) up end, second support column (11) rotate to be connected at connecting block (10) up end, supporting seat (3) up end fixedly connected with control seat (1), control seat (1) are including control seat main part (12), Infrared monitor (13), servo motor (14), rotation connector (15), belt (16), support groove (17), main shaft (18) and accomodate groove (19), infrared monitor (13) fixed connection is in control seat main part (12) up end one side, servo motor (14) fixed connection is at control seat main part (12) up end opposite side, rotation connector (15) fixed connection is in servo motor (14) output, support groove (17) and set up in control seat main part (12) side end face, accomodate groove (19) and set up terminal surface under control seat main part (12), main shaft (18) rotate to be connected and accomodate groove (19) inner wall, belt (16) are installed on rotation connector (15) and main shaft (18), fixed slot (20) are seted up in main shaft (18) side end face, terminal surface is provided with guard gate (2) under control seat (1), control seat (1) is including protection door main part (21), block fixed slot (22), block (23), tear notch (24) and virtual line mouth (25), the terminal surface before protection door main part (21) is seted up in block fixed slot (22), block (23) fixed connection is in block fixed slot (22) inner wall, tear notch (24) two sets of symmetries altogether are seted up in protection door main part (21) preceding terminal surface both sides, the terminal surface before protection door main part (21) is seted up in virtual line mouth (25), a set of fixed triangular prism (4) of each fixed connection of terminal surface and rear end face before control seat (1).

2. The material hoist guard door with automatic opening and closing device of claim 1, characterized in that: at least one group of threaded holes are formed in the front end face of the protection plate (6), the first base plate (7) and the second base plate (9), the fixed triangular column (4) is fixedly connected with the protection plate (6), the first base plate (7) and the second base plate (9) through bolts, the protection plate (6) is connected to the upper end face of the first base plate (7) and the second base plate (9) in a sliding mode, and the upper end face of the protection plate (6) is flush with the highest point of the fixed triangular column (4).

3. The material hoist guard door with automatic opening and closing device of claim 1, characterized in that: the height of connecting block (10) equals with the thickness of first support column (5), the up end of first support column (5) and second support column (11) is at same horizontal plane.

4. The material hoist guard door with automatic opening and closing device of claim 1, characterized in that: the supporting grooves (17) are symmetrically arranged on two sides of the control seat main body (12), the two groups of supporting grooves (17) are fixedly connected with the first supporting column (5) and the second supporting column (11) respectively, and the first supporting column (5) and the second supporting column (11) are fixedly connected inside the supporting grooves (17) through long bolts.

5. The material hoist guard door with automatic opening and closing device of claim 1, characterized in that: the infrared monitor (13) is electrically connected with the servo motor (14), and the infrared monitor (13) controls the servo motor (14) to start after detecting that the material lifting machine exists for 30 s.

6. The material hoist guard door with automatic opening and closing device of claim 1, characterized in that: the main shaft (18) is fixedly connected with the supporting seat (3) through a fixing groove (20), and the fixing groove (20) is a triangular groove.

7. The material hoist guard door with automatic opening and closing device of claim 1, characterized in that: the protective door is characterized in that the protective door main body (21) is made of flexible materials, the blocking net (23) is specifically a metal net, 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 into the inner wall of the blocking net fixing groove (22) by 5 cm.

8. The material hoist guard door with automatic opening and closing device of claim 1, characterized in that: two groups of tearing openings (24) are symmetrically arranged on two sides of the front end surface of the protective door main body (21).

9. The material hoist guard door with automatic opening and closing device of claim 8, characterized in that: at least one group of the virtual line ports (25) are uniformly arranged on the front end surface of the protective door main body (21), at least one group of the virtual line ports (25) is enclosed into a U shape on the front end surface of the protective door main body (21), two ends of the U shape are respectively adjacent to the two groups of tearing ports (24), and the height of the U shape is 1-1.5 m.

10. The material hoist guard door with automatic opening and closing device of claim 9, characterized in that: the spacing between the at least one group of the dotted line ports (25) is 0.2-0.4 mm.

Technical Field

The invention relates to the technical field of safety protection of constructional engineering, in particular to a material hoist protective door with an automatic opening and closing device.

Background

The portal frame and the material feeding port of a derrick material hoister which are commonly adopted in the construction site of China have certain dangerousness, and the falling object at the discharging port of a hanging basket or other floors is mainly caused, so that personal injury accidents are easily caused along with the continuous expansion of urban building development, safety production accidents at the construction site frequently occur, and personal injury accidents also occur seriously. And in many accidents, the number of safety accidents occurring on the discharging platform of the upper and lower racks is large. However, the existing safety protection door for the discharging platform of the upper drop frame is difficult to solve due to the structure of the safety protection door.

Present material lifting machine guard gate overall structure adopts square steel tube welded, the unable recycling of device, and install and demolish all very inconvenience, the opening of present material lifting machine guard gate adopts manual opening and closing mostly simultaneously, when the hanging flower basket rises to the floor that will carry the material, need the workman to open the guard gate, close the guard gate after the uninstallation material again, manual switch is very troublesome, seriously reduce material lifting machine's work efficiency, and present material lifting machine guard gate belongs to square steel tube and adds steel mesh welding and forms, when material lifting machine and guard gate break down unable the operation, need destroy the guard gate violence during the rescue, the rescue time has seriously lengthened.

Disclosure of Invention

Technical scheme (I)

In order to achieve the purpose, the invention is realized by the following technical scheme: a material hoist guard gate with automatic switching device, includes the supporting seat, the supporting seat includes first support column, protection shield, first bottom plate, connecting plate, second bottom plate, connecting block and second support column, the first bottom plate passes through connecting plate and second bottom plate sliding connection, the protection shield sets up the up end at first bottom plate and second bottom plate, first support column rotates to be connected and deviates from second bottom plate one side at first bottom plate up end, the connecting block is fixed to be connected and deviates from first bottom plate one side at second bottom plate up end, the second support column rotates to be connected and connects at the connecting block up end, the supporting seat up end fixedly connected with control box, control box includes control box main part, infrared monitor, servo motor, rotates connector, belt, support groove, main shaft and accomodates the groove, infrared monitor fixed connection is in control box main part up end one side, the servo motor is fixedly connected with the other side of the upper end surface of the control seat main body, the rotary connector is fixedly connected with the output end of the servo motor, the supporting groove is arranged on the side end surface of the control seat main body, the accommodating groove is arranged on the lower end surface of the control seat main body, the main shaft is rotationally connected with the inner wall of the accommodating groove, the belt is arranged on the rotary connector and the main shaft, the fixing groove is arranged on the end face of the side of the main shaft, the lower end face of the control seat is provided with a protective door, the control seat comprises a protective door main body, a blocking net fixing groove, a blocking net, a tearing opening and a dotted line opening, the barrier fixing groove is arranged on the front end surface of the protective door main body, the barrier is fixedly connected with the inner wall of the barrier fixing groove, two groups of tearing openings are symmetrically arranged on two sides of the front end face of the protective door main body, the virtual line opening is arranged on the front end face of the protective door main body, and the front end face and the rear end face of the control seat are respectively and fixedly connected with a group of fixed triangular columns.

Preferably, at least one group of threaded holes are formed in the front end faces of the protection plate, the first base plate and the second base plate, the fixed triangular column is fixedly connected with the protection plate, the first base plate and the second base plate through bolts, the protection plate is connected to the upper end faces of the first base plate and the second base plate in a sliding mode, and the upper end face of the protection plate is flush with the highest point of the fixed triangular column.

Preferably, the height of the connecting block is equal to the thickness of the first supporting column, and the upper end surfaces of the first supporting column and the second supporting column are on the same horizontal plane.

Preferably, the support grooves are symmetrically arranged on two sides of the control seat main body in two groups, the two groups of support grooves are fixedly connected with the first support column and the second support column respectively, and the first support column and the second support column are fixedly connected inside the support grooves through long bolts.

Preferably, the infrared monitor is electrically connected with the servo motor, and the infrared monitor controls the servo motor to start after detecting that the material lifting machine exists for 30 s.

More preferably, the main shaft is fixedly connected with the supporting seat through a fixing groove, and the fixing groove is a triangular groove.

Preferably, the barrier net is fixedly connected to the inner wall of the barrier net fixing groove, and the barrier net is embedded into the inner wall of the barrier net fixing groove by 5 cm.

More preferably, the two tear ports are symmetrically formed on both sides of the front end surface of the protective door main body.

Preferably, at least one group of the dotted line openings are uniformly formed in the front end face of the protective door main body, the at least one group of the dotted line openings form a U shape on the front end face of the protective door main body, two ends of the U shape are adjacent to the two groups of tearing openings respectively, and the height of the U shape is 1-1.5 m.

As a further preference, the spacing between the at least one set of dashed ports is 0.2-0.4 mm.

(II) advantageous effects

The invention provides a material hoister protective door with an automatic opening and closing device and a using method thereof, and the material hoister protective door has the following beneficial effects:

1. the device is connected with the second bottom plate through the connecting plate in a sliding way through the first bottom plate, so that the distance between the first bottom plate and the second bottom plate can be adjusted, a first supporting column is rotatably connected to one side of the upper end surface of the first bottom plate, which is far away from the second bottom plate, a connecting block is fixedly connected to one side of the upper end surface of the second bottom plate, which is far away from the first bottom plate, a second supporting column is rotatably connected to the upper end surface of the connecting block, the height of the connecting block is equal to the thickness of the first supporting column, the upper end surfaces of the first supporting column and the second supporting column are on the same horizontal plane, the first supporting column and the second supporting column are accommodated in the upper end surfaces of the first base plate and the second base plate through rotation, so that the supporting seat can be accommodated, and then the device recycles the installation and demolishs and shift all very conveniently, has solved current material hoist guard gate overall structure and has adopted square steel tube welding, the unable recycles of device, and installs and demolishs all very inconvenience.

2. The infrared monitor and the servo motor are fixedly connected with the upper end face of the control seat main body, the output end of the servo motor is fixedly connected with the rotating connector, the lower end face of the control seat main body is provided with the accommodating groove, the inner wall of the accommodating groove is rotatably connected with the main shaft, a belt is arranged between the rotating connector and the main shaft, the main shaft can be rotated through the rotating connector by the servo motor, meanwhile, the side end face of the main shaft is provided with the fixed groove, the main shaft is fixedly connected with the protective door through the fixed groove, so that the servo motor can control the lifting of the protective door, the infrared monitor is electrically connected with the servo motor, and the servo motor is controlled to start after the infrared monitor detects that the material lifting machine exists for 30s, and then the servo motor controls the main shaft to roll the protective door after the material is lifted to the front of the infrared monitor by the material lifting machine for 30s, thereby effectively improving the use efficiency of the material lifting machine, the problem of current material hoist guard gate open adopt manual opening and closing mostly, when the hanging flower basket rises to the floor that will carry the material, need the workman to open the guard gate, has closed the guard gate again after the uninstallation material, and manual switch is very troublesome, seriously reduces material hoist's work efficiency.

3. Through set up the fixed slot at main shaft side end face, the main shaft improves fixed slot and guard gate fixed connection, improves the fixed slot and makes the main shaft more level and more smooth when carrying out the rolling to the guard gate.

4. The barrier net is embedded into the inner wall of the barrier net fixing groove by 5cm, so that the barrier net and the barrier net fixing groove are fixed tightly, two sides of the front end face of the protective door main body are respectively provided with a group of tearing openings, the front end face of the protective door main body is also uniformly provided with at least one group of virtual line openings, at least one group of virtual line openings are uniformly arranged on the front end face of the protective door main body, the at least one group of virtual line openings surround a U-shaped front end face of the protective door main body, two ends of the U-shaped front end face are respectively adjacent to two groups of tearing openings, the height of the U-shaped front end face is 1-1.5m, the distance between at least one group of virtual line openings is 0.2-0.4mm, so that the protective door main body can be torn along the track of the virtual line openings through the tearing openings, and danger avoidance can be completed by tearing the virtual line openings when an emergency situation occurs, the problem of current material lifting machine guard gate belong to the square steel pipe and add the welding of steel mesh and form, when material lifting machine and guard gate broke down unable the operation, need during the rescue violently destroy the guard gate, seriously lengthened rescue time.

Drawings

FIG. 1 is a schematic view of the overall structure of the device body of the present invention;

FIG. 2 is a schematic view of a supporting base structure of the device of the present invention;

FIG. 3 is a schematic view of a control seat of the apparatus of the present invention;

FIG. 4 is a schematic cross-sectional view of a control seat of the apparatus of the present invention;

FIG. 5 is a schematic view of the spindle structure of the apparatus of the present invention;

FIG. 6 is a schematic view of a protective door of the device of the present invention.

In the figure: the protective door comprises a control seat 1, a protective door 2, a support seat 3, a triangular fixed column 4, 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, a second support column 11, a control seat main body 12, an infrared monitor 13, a servo motor 14, a rotary connector 15, a belt 16, a support groove 17, a main shaft 18, a holding groove 19, a fixing groove 20, a protective door main body 21, a blocking fixing groove 22, a blocking net 23, a tearing opening 24 and a virtual line opening 25.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means 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 with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The following disclosure provides many different embodiments or examples for implementing different features of the invention. To simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, the present invention provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize applications of other processes and/or uses of other materials.

The embodiment of the invention provides a material hoister protective door with an automatic switching device, which comprises a supporting seat 3, wherein the supporting seat 3 comprises a first supporting column 5, a protective plate 6, a first bottom plate 7, a connecting plate 8, a second bottom plate 9, a connecting block 10 and a second supporting column 11, the first bottom plate 7 is slidably connected with the second bottom plate 9 through the connecting plate 8, the protective plate 6 is arranged on the upper end surfaces of the first bottom plate 7 and the second bottom plate 9, the first supporting column 5 is rotatably connected to the side, away from the second bottom plate 9, of the upper end surface of the first bottom plate 7, the connecting block 10 is fixedly connected to the side, away from the first bottom plate 7, of the upper end surface of the second bottom plate 9, the second supporting column 11 is rotatably connected to the upper end surface of the connecting block 10, the upper end surface of the supporting seat 3 is fixedly connected with a control seat 1, and the control seat 1 comprises a control seat main body 12, an infrared monitor 13, a servo motor 14, Rotate connector 15, belt 16, support groove 17, main shaft 18 and accomodate groove 19, infrared monitor 13 fixed connection is in control seat main part 12 up end one side, servo motor 14 fixed connection is in control seat main part 12 up end opposite side, rotate connector 15 fixed connection at servo motor 14 output, support groove 17 and set up at control seat main part 12 side end face, accomodate groove 19 and set up terminal surface under control seat main part 12, main shaft 18 rotates and connects at accomodating groove 19 inner wall, belt 16 installs on rotating connector 15 and main shaft 18, fixed slot 20 is seted up at main shaft 18 side end face, terminal surface is provided with guard gate 2 under control seat 1, control seat 1 includes guard gate main part 21, block fixed slot 22, block 23, tears mouth 24 and dotted line mouth 25, block fixed slot 22 is seted up at guard gate main part 21 front end face, the barrier net 23 is fixedly connected to the inner wall of the barrier net fixing groove 22, two groups of tearing openings 24 are symmetrically formed in two sides of the front end face of the protective door main body 21, the dotted line opening 25 is formed in the front end face of the protective door main body 21, and the front end face and the rear end face of the control seat 1 are respectively and fixedly connected with one group of fixing triangular columns 4.

In this embodiment, at least one set of screw hole has all been seted up to protection shield 6, first bottom plate 7 and preceding terminal surface of second bottom plate 9, fixed triangular prism 4 passes through bolt and protection shield 6, first bottom plate 7 and second bottom plate 9 fixed connection, 6 sliding connection of protection shield is at the up end of first bottom plate 7 and second bottom plate 9, 6 up end of protection shield flushes with the peak of fixed triangular prism 4 for supporting seat 3 is simple with the dismouting of fixed triangular prism 4, and protection shield 6 can effectively avoid fixed triangular prism 4 to receive pressure and damage simultaneously.

Specifically, the height of connecting block 10 equals with first support column 5's thickness for first support column 5 and second support column 11 can accomodate the up end of first bottom plate 7 and second bottom plate 9 after rotating, the up end of first support column 5 and second support column 11 supports control cabinet 1 through first support column 5 and second support column 11 jointly at same horizontal plane.

In this embodiment, two sets of the supporting grooves 17 are symmetrically formed on two sides of the control seat body 12, the two sets of the supporting grooves 17 are respectively fixedly connected with the first supporting column 5 and the second supporting column 11, and the first supporting column 5 and the second supporting column 11 are both fixedly connected inside the supporting grooves 17 through long bolts.

Specifically, the infrared monitor 13 is electrically connected with the servo motor 14, and after the infrared monitor 13 detects that the material lifting machine exists for 30s, the servo motor 14 is controlled to be started, and the lifting of the protective door 2 can be controlled through the servo motor 14.

Further, the spindle 18 is fixedly connected with the support base 3 through a fixing groove 20, the fixing groove 20 is a triangular groove, and when the protective door 2 is rolled through the spindle 18, rolling is smoother.

In this embodiment, the barrier net 23 is fixedly connected to the inner wall of the barrier net fixing groove 22, and the barrier net 23 is embedded into the inner wall of the barrier net fixing groove 22 by 5cm, so as to ensure that the barrier net 23 is tightly fixed to the barrier net fixing groove 22.

Specifically, the tearing slits 24 are symmetrically formed on both sides of the front end surface of the protective door main body 21 in two sets.

Furthermore, at least one group of the virtual line ports 25 is uniformly arranged on the front end surface of the protective door main body 21, the at least one group of the virtual line ports 25 forms a U shape on the front end surface of the protective door main body 21, two ends of the U shape are respectively adjacent to the two groups of tearing ports 24, the height of the U shape is 1-1.5m, and the protective door main body 21 can be torn out of a crack through the virtual line ports 25.

Furthermore, the spacing between the at least one group of the dashed openings 25 is 0.2-0.4mm, which ensures that the dashed openings 25 are not easily torn in normal use, but are not too difficult to tear.

The working principle is as follows: when the device is used, parts of the device are moved to a suitable place, the first bottom plate 7 and the second bottom plate 9 are pulled open through the connecting plate 8, then the first supporting column 5 and the second supporting column 11 are unfolded through rotation, the protecting plate 6 is placed on the upper end face of the first bottom plate 7, the fixed triangular column 4 is fixedly connected with the protecting plate 6 and the first bottom plate 7 and the second bottom plate 9 through bolts, the first supporting column 5, the second supporting column 11 and the supporting groove 17 are fixed through long bolts, the control base 1 is arranged above the supporting base 3, the spindle 18 is fixedly connected with the protecting door 2 through the fixing groove 20, the device is assembled, after the infrared monitor 13 detects that the material hoister exists for 30s, the servo motor 14 controls the spindle 18 to roll the protecting door 2, the transportation of materials is convenient, after the materials are removed, the servo motor 14 controls the spindle 18 to put down the protecting door 2 to close the protecting door, when an emergency occurs, personnel tear the protective door main body 21 along the trace of the dotted line port 25 through the tearing port 24, so that the emergency danger avoidance of the personnel is facilitated.

To sum up, the protective door with the automatic opening and closing device for the material hoist comprises a first bottom plate 7 and a second bottom plate 9 which are slidably connected through a connecting plate 8, wherein the distance between the first bottom plate 7 and the second bottom plate 9 is adjustable, a first supporting column 5 is rotatably connected to one side of the upper end surface of the first bottom plate 7, which is far away from the second bottom plate 9, a connecting block 10 is fixedly connected to one side of the upper end surface of the second bottom plate 9, which is far away from the first bottom plate 7, a second supporting column 11 is rotatably connected to the upper end surface of the connecting block 10, the height of the connecting block 10 is equal to the thickness of the first supporting column 5, the upper end surfaces of the first supporting column 5 and the second supporting column 11 are in the same horizontal plane, the first supporting column 5 and the second supporting column 11 are rotatably accommodated in the upper end surfaces of the first bottom plate 7 and the second bottom plate 9, so that the supporting seat 3 can be accommodated, and the device is very convenient to be recycled, installed, disassembled and transferred, the problem of current material hoist guard gate overall structure adopt square steel tube welding, the unable recycle of device, and install and demolish all very inconvenience is solved.

Secondly, an infrared monitor 13 and a servo motor 14 are fixedly connected with the upper end face of the control seat main body 12, a rotary connector 15 is fixedly connected with the output end of the servo motor 14, a containing groove 19 is formed in the lower end face of the control seat main body 12, a main shaft 18 is rotatably connected with the inner wall of the containing groove 19, a belt 16 is installed between the rotary connector 15 and the main shaft 18, the main shaft 18 can rotate through the rotary connector 15 by the servo motor 14, a fixing groove 20 is formed in the end face of the main shaft 18, the main shaft 18 is fixedly connected with a protection door 2 through the fixing groove 20, so that the servo motor 14 can control the lifting of the protection door 2, the infrared monitor 13 is electrically connected with the servo motor 14, the infrared monitor 13 controls the servo motor 14 to be started after the infrared monitor 13 detects that a material lifter exists for 30s, and then when the material lifter lifts the material to the front of the infrared monitor 13 for 30s, servo motor 14 will control main shaft 18 and will protect door 2 rolling, has effectively improved material elevator's availability factor, has solved opening of current material elevator protection door and has mostly adopted manual opening and closing, when the hanging flower basket rises to the floor that will carry the material, needs the workman to open the protection door, closes the protection door after the uninstallation material again, and manual switch is very troublesome, seriously reduces material elevator's work efficiency.

In addition, the fixing groove 20 is formed in the end face of the main shaft 18, so that the main shaft 18 is fixedly connected with the protection door 2 by the fixing groove 20, and the protection door 2 is more flat when the main shaft 18 is wound by the fixing groove 20.

Moreover, the front end face of the protective door main body 21 is provided with a barrier fixing groove 22, the inner wall of the barrier fixing groove 22 is fixedly connected with a barrier 23, the barrier 23 is embedded into the inner wall of the barrier fixing groove 22 by 5cm, so that the barrier 23 and the barrier fixing groove 22 are fixed tightly, meanwhile, two sides of the front end face of the protective door main body 21 are respectively provided with a group of tearing openings 24, the front end face of the protective door main body 21 is also uniformly provided with at least one group of virtual line openings 25, at least one group of virtual line openings 25 are uniformly arranged on the front end face of the protective door main body 21, at least one group of virtual line openings 25 enclose a 'U' shape, two ends of the 'U' shape are respectively adjacent to two groups of tearing openings 24, the height of the 'U' shape is 1-1.5m, the distance between at least one group of virtual line openings 25 is 0.2-0.4mm, so that the protective door main body 21 can be torn along the track of the virtual line openings 25 through the tearing openings 24, and then the accessible tears dotted line mouth 25 when meetting emergency and accomplishes keeping away the danger, has solved current material lifting machine guard gate and has belong to square steel pipe and add steel mesh welding and form, when material lifting machine and guard gate broke down unable the operation, need during the rescue with guard gate violent destruction, seriously lengthened rescue time.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.