CN115749221A - House construction erecting frame with anti-falling function and use method thereof - Google Patents

Abstract

The invention is suitable for the technical field of building construction, and provides a building construction carrying frame with an anti-falling function, which comprises a base, wherein two supporting columns are arranged at the top of the base, a protection assembly is arranged between the two supporting columns, a lifting mechanism is arranged between the protection assembly and the base, and a moving assembly is arranged in the base; the protective assembly comprises a guardrail assembly and an adjusting assembly for adjusting the transverse position of the guardrail assembly, the adjusting assembly is arranged on the lifting mechanism, and the guardrail assembly is arranged on the adjusting assembly; the moving assembly comprises a moving wheel and a telescopic mechanism for driving the moving wheel to stretch and retract; the protective assembly can enclose a protective environment, so that workers are prevented from directly falling off the carrying frame; the arrangement of the guardrail component and the adjusting component can adjust the positions of the two protective nets in the horizontal direction, so that workers can conveniently enter and exit; the setting of electromagnetic lock and iron plate is then convenient for fix two protection networks to improve safety protection nature.

Description

House construction erecting frame with anti-falling function and use method thereof

Technical Field

The invention belongs to the technical field of house construction, and particularly relates to a house construction erecting frame with an anti-falling function and a using method thereof.

Background

The building construction refers to production activities in the engineering construction implementation stage, is the construction process of various buildings, and also can be a process of changing various lines on a design drawing into a real object in a specified place, and comprises foundation engineering construction, main structure construction, roofing engineering construction, decoration engineering construction and the like.

The utility model discloses a chinese utility model patent of publication number CN211341673U discloses a carriage for building construction, including support bearing structure and carriage functional structure, support bearing structure includes carriage roof, fixed horizontal pole, fixed down tube and vertical pole setting, fixed horizontal pole and fixed down tube all weld the intermediate position in vertical pole setting, and fixed horizontal pole is located the top of fixed down tube, carriage roof sets up at the top of vertical pole setting, carriage functional structure includes standing groove and simple stool, the standing groove sets up the below at carriage roof, simple stool sets up the inside at carriage roof; above-mentioned patent is through being provided with the standing groove and after its inside instrument placement box structure, at first increased fine functionality for the carrier to in the use, the instrument placement box that divides three grades can place many rooms and build the instrument, and the direction of placing is for downwards, can not influence the removal of carrier and workman's construction.

However, the above patents have the following disadvantages:

1. above-mentioned patent can provide the environment of standing for the staff through the setting of carrying frame roof and pole setting, and the convenience is under construction to the building, and foretell carrying frame structure is comparatively simple, does not set up the rail on every side, and it is not good to staff's protecting effect, takes place easily and falls the accident.

2. The wheels are installed at the bottom of the vertical rod, so that the carrying frame can be moved conveniently, the wheels can not be folded and unfolded although the carrying frame can be moved by a worker conveniently, the site environment is severe, and the wheels are exposed outside for a long time and are easy to corrode.

Disclosure of Invention

The invention provides a building construction carrying frame with an anti-falling function and a using method thereof, aiming at solving the problems that the existing carrying frame has a simple structure, no fence is arranged around the carrying frame, the protection effect on workers is poor, and falling accidents are easy to happen; and the wheel on the prior carrying frame is exposed outside for a long time, so that the corrosion phenomenon is easy to occur.

In order to achieve the purpose, the invention adopts the following technical scheme:

the building construction carrying frame with the anti-falling function comprises a base, wherein two supporting columns are mounted at the top of the base, a protection assembly is arranged between the two supporting columns, a lifting mechanism is arranged between the protection assembly and the base and used for adjusting the height of the protection assembly in the vertical direction, and a moving assembly is mounted inside the base; the protection assembly comprises a guardrail assembly and an adjusting assembly for adjusting the transverse position of the guardrail assembly, the adjusting assembly is installed on the lifting mechanism, and the guardrail assembly is installed on the adjusting assembly; the movable assembly comprises a movable wheel and a telescopic mechanism used for driving the movable wheel to stretch, the telescopic mechanism is installed inside the base, and the movable wheel is installed on the telescopic mechanism.

Preferably, the adjusting assembly comprises a housing, a motor is installed inside the housing, a first supporting plate is arranged on one side of the motor, the first supporting plate is fixedly connected with the housing, and an opening is formed in the top of the housing; a first screw rod is mounted on an output shaft of the motor and is rotationally connected with a first support plate, a first nut is screwed on the outer wall of the first screw rod, and the first nut is slidably connected with the shell; a second supporting plate is arranged on one side, away from the motor, of the first supporting plate, and the second supporting plate is fixedly connected with the shell; a second screw rod is rotatably connected to the side wall of the second support plate, a second nut is screwed on the side wall of the second screw rod and is in sliding connection with the shell, the second screw rod is connected with the first screw rod through a coupler, and the second screw rod and the first screw rod are symmetrically distributed along the coupler; through setting up the motor in this scheme, because screw rod two with screw rod one is along shaft coupling symmetric distribution, when motor during operation, the output shaft of motor drives screw rod one and two synchronous rotations of screw rod, and two nuts are or are close to each other this moment, or keep away from each other to realize the lock door and the door that open of protection network one and protection network two.

Preferably, the guardrail assembly comprises a first protective net, the first protective net is positioned at the top of the first nut, and the first protective net is fixedly connected with the first nut; a second protective net is mounted at the top of the second nut, and the first protective net is detachably connected with the second protective net; the guardrail assembly further comprises a guardrail body, and the guardrail body is located at the top of the shell and fixedly connected with the shell.

Preferably, at least one electromagnetic lock is installed on the side wall of the first protection net; an iron block corresponding to the electromagnetic lock is installed on the side wall of the first protective net and detachably connected with the iron block through the electromagnetic lock; in the scheme, by arranging the electromagnetic lock, when the electromagnetic lock is electrified, the electromagnetic lock can generate strong suction to tightly suck the iron block, so that the door locking effect is achieved; when the electromagnetic lock is powered off, the electromagnetic lock loses the suction force and can open the door.

Preferably, the telescopic mechanism comprises a motor, the motor is positioned inside the base, and the motor is fixedly connected with the base; a gear is arranged below the motor and is rotationally connected with the base through a rotating shaft, an output shaft of the motor is in transmission connection with the rotating shaft, and a rack is meshed on the outer wall of the gear; one end of the rack is connected with the base in a sliding mode, and the other end of the rack is fixedly connected with the moving wheel; through setting up the motor in this scheme, when the motor during operation, the output shaft of motor drives gear revolve, and gear engagement rack this moment to make the rack drive and remove the wheel and move on vertical direction, thereby realize removing taking in and out of wheel.

Preferably, a vertical column is arranged on the top wall in the base; the inner part of the upright post is provided with a sliding chute, a sliding block is arranged in the sliding chute, the sliding block is fixedly connected with the rack, and the rack is connected with the upright post in a sliding manner through the sliding block and the sliding chute; through setting up slider and spout in this scheme, when the rack moved on vertical direction, the rack drove the slider and slides in the spout to for the rack provides the direction in the ascending removal of vertical direction.

Preferably, the bottoms of the first nut and the second nut are both provided with a guide block; guide rails are horizontally arranged in the two guide blocks, and each guide rail is fixedly connected with the shell; in the scheme, the guide block and the guide rail are arranged, so that the freedom degree of the rotation of the nut can be limited.

Preferably, a storage box is mounted on the side wall of the supporting column; the solar panel is mounted at the top of the storage box, the storage battery is further mounted at the top of the base, and the solar panel is electrically connected with the storage battery; the storage battery is used for supplying power to the protection assembly, the lifting mechanism and the moving assembly.

A use method of a building construction carrying frame with an anti-falling function comprises the following steps:

s1, firstly, a worker disconnects a power supply of the electromagnetic lock, then the motor is started, an output shaft of the motor drives the first screw rod and the second screw rod to rotate, at the moment, the first nut and the second nut slide on the guide rail through the guide block, so that the first protective net and the second protective net are unlocked, and then the worker climbs onto the shell through the base;

s2, after the worker arrives, the motor is turned on again, the output shaft of the motor drives the first screw rod and the second screw rod to rotate, the first nut and the second nut slide on the guide rail through the guide block until the electromagnetic lock on the first protective net is in contact with the iron block on the second protective net, and finally the power supply of the electromagnetic lock is switched on, and the electromagnetic lock can generate strong suction force to tightly suck the iron block to achieve the door locking effect

Compared with the prior art, the invention has the beneficial effects that:

1. by arranging the protection assembly, a protection environment can be enclosed by the protection assembly, so that workers are prevented from directly falling off the carrying frame; the arrangement of the guardrail component and the adjusting component can adjust the positions of the two protective nets in the horizontal direction, so that workers can conveniently enter and exit; the setting of electromagnetic lock and iron plate is then convenient for fix two protection networks to improve safety protection nature.

2. Through setting up telescopic machanism, when the motor during operation in the telescopic machanism, the output shaft of motor drives the epaxial gear revolve of commentaries on classics, gear engagement rack this moment to the drive removes the wheel and moves on vertical direction, thereby realizes removing receiving and releasing of wheel, and this device can avoid the wheel to expose outside for a long time, leads to the wheel to take place corrosion.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a front view of the present invention in its entirety;

FIG. 2 is an enlarged view of the results at A on the adjustment assembly of FIG. 1;

FIG. 3 is a cross-sectional view of the adjustment assembly of the present invention;

FIG. 4 is a cross-sectional view of the base of the present invention;

FIG. 5 is a cross-sectional view of a column of the present invention;

in the figure:

1. a base; 2. a support pillar; 3. a guard assembly; 4. a lifting mechanism; 5. a moving assembly; 6. a storage box; 7. a solar panel; 8. a storage battery;

31. a guardrail assembly; 32. an adjustment assembly;

41. a hydraulic cylinder; 42. a reinforcing block;

51. a moving wheel; 52. a telescoping mechanism;

311. a first protective net; 312. a second protective net; 313. a guardrail body; 314. an electromagnetic lock; 315. an iron block;

321. a housing; 322. a motor; 323. a first support plate; 324. a first screw rod; 325. a first nut; 326. a second support plate; 327. a second screw; 328. a second nut; 329. a coupling;

521. a motor; 522. a gear; 523. a rack; 524. a column; 525. a chute; 526. a slider; 3211. an opening; 3212. a guide block; 3213. a guide rail.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention.

The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention.

All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but 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 construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

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 and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1 and 4, the building construction erection support with the anti-falling function comprises a base 1, two support columns 2 are mounted at the top of the base 1, a protection component 3 is arranged between the two support columns 2, a lifting mechanism 4 is arranged between the protection component 3 and the base 1, the lifting mechanism 4 is used for adjusting the height of the protection component 3 in the vertical direction, and a moving component 5 is mounted inside the base 1; the protection assembly 3 comprises a guardrail assembly 31 and an adjusting assembly 32 for adjusting the transverse position of the guardrail assembly 31, the adjusting assembly 32 is installed on the lifting mechanism 4, and the guardrail assembly 31 is installed on the adjusting assembly 32; the moving assembly 5 includes a moving wheel 51 and a telescopic mechanism 52 for driving the moving wheel 51 to extend and retract, the telescopic mechanism 52 is installed inside the base 1, and the moving wheel 51 is installed on the telescopic mechanism 52.

Specifically, the lifting mechanism 4 comprises a plurality of hydraulic cylinders 41, the bottom of each hydraulic cylinder 41 is fixedly connected with the base 1, and an output shaft of each hydraulic cylinder 41 is fixedly connected with the shell 321; a reinforcing block 42 is arranged on the side wall of each hydraulic cylinder 41, and the reinforcing block 42 is fixedly connected with the base 1; when the hydraulic cylinder 41 works, the output shaft of the hydraulic cylinder 41 extends out, so that the protection component 3 is driven to move in the vertical direction. Still install the supporting leg on base 1's the outer wall, the block rubber is installed to the bottom of this supporting leg, and when removing in wheel 51 takes in base 1, the supporting leg passes through the block rubber increase and the frictional force on ground.

Further, referring to fig. 3, the adjusting assembly 32 includes a housing 321, a motor 322 is installed inside the housing 321, a first supporting plate 323 is disposed on one side of the motor 322, the first supporting plate 323 is fixedly connected to the housing 321, and an opening 3211 is formed at the top of the housing 321; the output shaft of the motor 322 is provided with a first screw 324, the first screw 324 is rotatably connected with a first support plate 323, the outer wall of the first screw 324 is screwed with a first nut 325, and the first nut 325 is slidably connected with the shell 321.

Specifically, the bottom at both ends of the housing 321 is provided with a supporting member, the two supporting members are respectively fixedly connected with the two supporting columns 2, and the supporting member is arranged to provide an auxiliary support for the housing 321.

Further, referring to fig. 3, a second supporting plate 326 is disposed on a side of the first supporting plate 323 away from the motor 322, and the second supporting plate 326 is fixedly connected to the housing 321; the side wall of the second support plate 326 is rotatably connected with a second screw 327, the side wall of the second screw 327 is screwed with a second nut 328, the second nut 328 is in sliding connection with the shell 321, the second screw 327 is connected with the first screw 324 through a coupling 329, and the second screw 327 and the first screw 324 are symmetrically distributed along the coupling 329.

Further, referring to fig. 1 and 2, the guardrail assembly 31 includes a first protection net 311, the first protection net 311 is located on the top of the first nut 325, and the first protection net 311 is fixedly connected with the first nut 325; the top of the nut II 328 is provided with a protective net II 312, and the protective net I311 is detachably connected with the protective net II 312; guardrail assembly 31 further includes a guardrail body 313, guardrail body 313 being positioned on top of housing 321 and fixedly connected to housing 321.

Specifically, the first protection net 311 and the second protection net 312 are both positioned in front of the guardrail body 313, and the arrangement mode can prevent the first protection net 311 and the second protection net 312 from impacting the outer wall of the guardrail body 313 when moving in the horizontal direction.

Further, referring to fig. 2, at least one electromagnetic lock 314 is installed on the sidewall of the first protection net 311; an iron block 315 corresponding to the electromagnetic lock 314 is installed on the side wall of the second protection net 312, and the first protection net 311 and the second protection net 312 are detachably connected through the electromagnetic lock 314 and the iron block 315.

Further, referring to fig. 4, the telescoping mechanism 52 includes a motor 521, the motor 521 is located inside the base 1, and the motor 521 is fixedly connected to the base 1; a gear 522 is arranged below the motor 521, the gear 522 is rotatably connected with the base 1 through a rotating shaft, an output shaft of the motor 521 is in transmission connection with the rotating shaft, and a rack 523 is meshed on the outer wall of the gear 522; one end of the rack 523 is slidably connected to the base 1, and the other end of the rack 523 is fixedly connected to the moving wheel 51.

Further, referring to fig. 5, a vertical column 524 is installed on the top wall inside the base 1; the inside of stand 524 has a spout 525, is provided with slider 526 in the spout 525, and slider 526 and rack 523 fixed connection, rack 523 pass through slider 526 and spout 525 and stand 524 sliding connection.

Further, referring to fig. 3, the bottoms of the first nut 325 and the second nut 328 are both provided with a guide block 3212; the inside of two guide blocks 3212 all is provided with the guide rail 3213 horizontally, and each guide rail 3213 all with shell 321 fixed connection.

Further, referring to fig. 1, a storage box 6 is mounted on the side wall of the support column 2; the solar panel 7 is installed at the top of the storage box 6, the storage battery 8 is also installed at the top of the base 1, and the solar panel 7 is electrically connected with the storage battery 8; the storage battery 8 is used for supplying power to the protection component 3, the lifting mechanism 4 and the moving component 5.

A use method of a building construction erecting frame with an anti-falling function comprises the following steps:

s1, firstly, a worker disconnects the power supply of the electromagnetic lock 314, then, the motor 322 is started, an output shaft of the motor 322 drives the first screw rod 324 and the second screw rod 325 to rotate, at the moment, the first nut 325 and the second nut 328 slide on the guide rail 3213 through the guide block 3212, so that the first protective net 311 and the second protective net 312 are unlocked, and then, the worker climbs onto the shell 321 through the base 1;

s2, after the staff arrives, the motor 322 is started again, the output shaft of the motor 322 drives the first screw rod 324 and the second screw rod 325 to rotate, at the moment, the first nut 325 and the second nut 328 slide on the guide rail 3213 through the guide block 3212 until the electromagnetic lock 324 on the first protective net 311 is in contact with the iron block 315 on the second protective net 312, and finally, the power supply of the electromagnetic lock 324 is switched on, at the moment, the electromagnetic lock 324 can generate strong suction to tightly suck the iron block 315 to achieve the door locking effect.

The working principle of the invention is as follows:

referring to fig. 1-5, if a worker needs to construct a construction, the worker first disconnects the power supply of the electromagnetic lock 314, at this time, the electromagnetic lock 314 loses the suction force and is not attracted to the iron block 315, and then starts the motor 322, so that the output shaft of the motor 322 drives the screw rod one 324 and the screw rod two 327 to rotate, at this time, the two nuts respectively drive the protection net one 311 and the protection net two 312 to move towards two sides, and then the worker carries goods onto the shell 321 and climbs onto the shell 321 through the base 1; then the motor 322 is turned on again, the output shaft of the motor 322 drives the first screw 324 and the second screw 327 to rotate, at this time, the two nuts respectively drive the first protective net 311 and the second protective net 312 to approach each other until the electromagnetic lock 324 contacts with the iron block 315, then the electromagnetic valve 314 is electrified, so that the electromagnetic lock 324 generates strong suction to tightly suck the iron block 315 to achieve the door locking effect, meanwhile, the worker turns on the hydraulic cylinder 41 again to extend the output shaft of the hydraulic cylinder 41, thereby adjusting the height of the shell 321, and facilitating the worker to work on buildings with different heights.

The previous description is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. Building construction is built and is put up frame with prevent weighing down function, including base (1), its characterized in that: the top of the base (1) is provided with two supporting columns (2), a protection component (3) is arranged between the two supporting columns (2), a lifting mechanism (4) is arranged between the protection component (3) and the base (1), the lifting mechanism (4) is used for adjusting the height of the protection component (3) in the vertical direction, and a moving component (5) is arranged in the base (1);

the protection assembly (3) comprises a guardrail assembly (31) and an adjusting assembly (32) for adjusting the transverse position of the guardrail assembly (31), the adjusting assembly (32) is installed on the lifting mechanism (4), and the guardrail assembly (31) is installed on the adjusting assembly (32);

the moving assembly (5) comprises a moving wheel (51) and a telescopic mechanism (52) used for driving the moving wheel (51) to stretch, the telescopic mechanism (52) is installed inside the base (1), and the moving wheel (51) is installed on the telescopic mechanism (52).

2. The building construction carrying frame with the anti-falling function according to claim 1, characterized in that:

the adjusting assembly (32) comprises a shell (321), a motor (322) is installed inside the shell (321), a first supporting plate (323) is arranged on one side of the motor (322), the first supporting plate (323) is fixedly connected with the shell (321), and an opening (3211) is formed in the top of the shell (321);

a first screw rod (324) is mounted on an output shaft of the motor (322), the first screw rod (324) is rotatably connected with the first support plate (323), a first nut (325) is screwed on the outer wall of the first screw rod (324), and the first nut (325) is slidably connected with the shell (321).

3. The building construction carrying frame with the anti-falling function according to claim 2, characterized in that:

a second supporting plate (326) is arranged on one side, away from the motor (322), of the first supporting plate (323), and the second supporting plate (326) is fixedly connected with the shell (321);

the side wall of the second support plate (326) is rotatably connected with a second screw rod (327), the side wall of the second screw rod (327) is connected with a second nut (328) in a threaded mode, the second nut (328) is connected with the shell (321) in a sliding mode, the second screw rod (327) is connected with the first screw rod (324) through a coupler (329), and the second screw rod (327) and the first screw rod (324) are symmetrically distributed along the coupler (329).

4. The building construction erection frame with the anti-falling function as claimed in claim 3, wherein:

the guardrail assembly (31) comprises a first protective net (311), the first protective net (311) is positioned at the top of the first nut (325), and the first protective net (311) is fixedly connected with the first nut (325);

a second protective net (312) is installed at the top of the second nut (328), and the first protective net (311) is detachably connected with the second protective net (312);

the guardrail assembly (31) further comprises a guardrail body (313), and the guardrail body (313) is located at the top of the shell (321) and fixedly connected with the shell (321).

5. The building construction carrying frame with the anti-falling function according to claim 4, characterized in that:

at least one electromagnetic lock (314) is installed on the side wall of the first protection net (311);

and an iron block (315) corresponding to the electromagnetic lock (314) is installed on the side wall of the second protective net (312), and the first protective net (311) and the second protective net (312) are detachably connected through the electromagnetic lock (314) and the iron block (315).

6. The building construction carrying frame with the anti-falling function according to claim 1, characterized in that:

the telescopic mechanism (52) comprises a motor (521), the motor (521) is positioned in the base (1), and the motor (521) is fixedly connected with the base (1);

a gear (522) is arranged below the motor (521), the gear (522) is rotatably connected with the base (1) through a rotating shaft, an output shaft of the motor (521) is in transmission connection with the rotating shaft, and a rack (523) is meshed on the outer wall of the gear (522);

one end of the rack (523) is connected with the base (1) in a sliding mode, and the other end of the rack (523) is fixedly connected with the moving wheel (51).

7. The building construction carrying frame with the anti-falling function according to claim 6, characterized in that:

the top wall in the base (1) is provided with an upright post (524);

the inside of stand (524) has a spout (525), be provided with slider (526) in spout (525), slider (526) with rack (523) fixed connection, rack (523) pass through slider (526) with spout (525) with stand (524) sliding connection.

8. The building construction carrying frame with the anti-falling function according to claim 3, characterized in that:

the bottoms of the first nut (325) and the second nut (328) are respectively provided with a guide block (3212);

guide rails (3213) are horizontally arranged inside the two guide blocks (3212), and each guide rail (3213) is fixedly connected with the shell (321).

9. The building construction carrying frame with the anti-falling function according to claim 1, characterized in that:

a storage box (6) is arranged on the side wall of the supporting column (2);

a solar panel (7) is installed at the top of the storage box (6), a storage battery (8) is further installed at the top of the base (1), and the solar panel (7) is electrically connected with the storage battery (8);

the storage battery (8) is used for supplying power to the protection assembly (3), the lifting mechanism (4) and the moving assembly (5).

10. A method for using the building construction carrying frame with the anti-falling function according to any one of claims 1 to 9, wherein the method comprises the following steps:

the method comprises the following steps:

s1, firstly, a worker disconnects the power supply of the electromagnetic lock (314), then the motor (322) is started, an output shaft of the motor (322) drives the screw rod I (324) and the screw rod II (325) to rotate, at the moment, the nut I (325) and the nut II (328) slide on the guide rail (3213) through the guide block (3212), so that the protection net I (311) and the protection net II (312) are unlocked, and then the worker climbs onto the shell (321) through the base (1);

s2, after the arrival of workers is finished, the motor (322) is started again, the output shaft of the motor (322) drives the screw rod I (324) and the screw rod II (325) to rotate, at the moment, the nut I (325) and the nut II (328) slide on the guide rail (3213) through the guide block (3212), until the electromagnetic lock (324) on the protective net I (311) is contacted with the iron block (315) on the protective net II (312), and finally the power supply of the electromagnetic lock (324) is switched on, at the moment, the electromagnetic lock (324) can generate strong suction to tightly suck the iron block (315) to achieve the door locking effect.

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