Anti-falling device for steel structure construction

Abstract

The utility model relates to the technical field of steel structure construction, and discloses a steel structure construction anti-falling device which comprises a base and a top plate, an elevator is arranged between the base and the top plate, and an anti-falling mechanism is fixedly installed at the top of the top plate. The anti-falling mechanism comprises a sliding rod and a first rotating shaft, the sliding rod is fixedly installed at the top of the top plate, the bottom end of the first rotating shaft is rotationally connected with the top of the top plate through a bearing, the whole guardrail is designed into three separated guardrails including the first guardrail, the second guardrail and the third guardrail, and the height of the whole guardrail can be conveniently adjusted; when a worker goes up and down the top plate, the first guardrail, the second guardrail and the third guardrail are moved downwards to get close, after the worker stands on the top plate, the first guardrail, the second guardrail and the third guardrail are moved upwards and pulled up, the worker is prevented from falling, the telescopic function of the folding cover is achieved, and enough strength is provided for supporting impact and pressure when the worker topples over.

Description

Technical Field

[0001] The utility model relates to the technical field of steel structure construction, in particular to a steel structure construction anti-falling device. Background Art

[0002] Scaffolding is used in steel structure construction, but the current scaffolding is not equipped with a corresponding anti-fall mechanism, and workers are prone to falling from the scaffolding;

[0003] The existing Chinese patent CN211369458U discloses a steel structure construction anti-fall device, which is arranged on the top of the top plate by setting a folding cover. When the construction personnel reach the top of the plate, the top block is pushed by the output end of the electric push rod to lift the guardrail upward, and the folding cover is stretched at the bottom of the guardrail to effectively protect the construction personnel standing on the top plate and effectively prevent the construction personnel from accidentally falling during construction.

[0004] However, compared with guardrails with high rigidity and support strength, the protective performance of the folding cover is poor. When a worker loses his center of gravity and falls on the folding cover, the folding cover is easily crushed, causing the folding cover to lose its protective effect on the worker. Utility Model Content

[0005] The purpose of the utility model is to provide a steel structure construction anti-falling device to solve the problems raised in the above background technology.

[0006] To achieve the above object, the utility model provides the following technical solutions: a steel structure construction anti-falling device, comprising a base and a top plate, a lift is arranged between the base and the top plate, and an anti-falling mechanism is fixedly installed on the top of the top plate;

[0007] The anti-fall mechanism includes a slide bar and a rotating shaft 1. The slide bar is fixedly installed on the top of the top plate. The bottom end of the rotating shaft 1 is rotatably connected to the top of the top plate through a bearing. The outer wall of the slide bar is slidably sleeved with guardrail 1, guardrail 2, and guardrail 3 in sequence from bottom to top. Sliding seat 1 is fixedly installed at the four corners of guardrail 1, sliding seat 2 is fixedly installed at the four corners of guardrail 2, and sliding seat 3 is fixedly installed at the four corners of guardrail 3. Sliding seat 1, sliding seat 2, and sliding seat 3 in contact with rotating shaft 1 The inner wall of seat three is respectively threadedly connected with screw rod one, screw rod two, and screw rod three, which are all fixedly sleeved on rotating shaft one, the outer wall of rotating shaft one is fixedly installed with bevel gear one, bevel gear one is meshed with bevel gear two, rotating shaft two is fixedly installed on the inner wall of bevel gear two, a double-axis motor is fixedly installed at one end of rotating shaft two away from bevel gear two, and the double-axis motor is fixedly installed on the top of the top plate, and revolving doors are arranged on the front of guardrail two and guardrail three.

[0008] Furthermore, the revolving door includes a door body, which is rotatably connected to the outer walls of guardrail two and guardrail three through hinges. A slot is provided on the outer wall of one end of the door body away from the hinge, and a block is clamped on the inner wall of the slot. The block is fixedly mounted on sliding seat two and sliding seat three. A magnetic pin is inserted on the top of the door body, and the magnetic pin passes through the center of the block.

[0009] Furthermore, the thread pitch on screw rod one is half of the thread pitch on screw rod two, and the thread pitch on screw rod one is one third of the thread pitch on screw rod three.

[0010] Furthermore, a protective shell is fixedly installed on the top of the top plate, and the protective shell covers the dual-axis motor and the second rotating shaft.

[0011] Furthermore, a fixing plate is fixedly mounted on the side outer wall of the base, a threaded rod is threadedly connected to the inner wall of the fixing plate, and a pressure plate is rotatably connected to the bottom end of the threaded rod via a bearing.

[0012] Furthermore, two fixing plates are provided and are respectively located on the left and right outer walls of the base. A rubber pad is fixedly installed on the bottom of the pressure plate, and a turning handle is fixedly installed on the top of the threaded rod.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. The entire guardrail is designed to be three separate guardrails, namely, guardrail 1, guardrail 2, and guardrail 3, so as to facilitate the adjustment of the height of the entire guardrail. That is, when the workers go up and down the roof, guardrails 1, 2, and 3 are moved downward and close together. After the workers stand on the roof, guardrails 1, 2, and 3 are moved upward and pulled up to prevent the workers from falling. That is, the folding cover has the function of being retractable, and has sufficient strength to support the impact and pressure when the workers fall.

[0015] 2. Utilizing the difference in thread pitch on screw rod 1, screw rod 2, and screw rod 3, when screw rod 1, screw rod 2, and screw rod 3 rotate the same number of circles, the lifting distance of sliding seat 1, sliding seat 2, and sliding seat 3 increases successively, that is, after guardrail 1, guardrail 2, and guardrail 3 are raised, the distances between the top plate, guardrail 1, guardrail 2, and guardrail 3 remain consistent, which is not only more beautiful, but also can avoid the appearance of large exposed space. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 It is a structural schematic diagram of the anti-falling mechanism and the top plate of the utility model;

[0018] Figure 3This is a structural schematic diagram of the bottom upward view of the anti-falling mechanism of the utility model;

[0019] Figure 4 For this utility model Figure 3 A is an enlarged structural diagram;

[0020] Figure 5 It is a structural schematic diagram of an exploded view of a revolving door of the utility model.

[0021] In the figure: 1. base; 2. lift; 3. top plate; 4. anti-fall mechanism; 401. slide bar; 402. shaft 1; 403. guardrail 1; 4031. sliding seat 1; 4032. screw rod 1; 404. guardrail 2; 4041. sliding seat 2; 4042. screw rod 2; 405. guardrail 3; 4051. sliding seat 3; 4052. screw rod 3; 406. revolving door; 4061. door body; 4062. block; 4063. slot; 4064. magnetic latch; 407. dual-axis motor; 408. shaft 2; 409. bevel gear 1; 4010. bevel gear 2; 5. fixing plate; 6. threaded rod; 7. pressure plate; 8. rubber pad; 9. protective shell. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0023] See also Figure 1-Figure 5 The utility model provides a technical solution: a steel structure construction anti-falling device, comprising a base 1 and a top plate 3, a lift 2 is arranged between the base 1 and the top plate 3, and an anti-falling mechanism 4 is fixedly installed on the top of the top plate 3;

[0024] The anti-fall mechanism 4 includes a slide bar 401 and a rotating shaft 402. The slide bar 401 is fixedly installed on the top of the top plate 3. The bottom end of the rotating shaft 402 is rotatably connected to the top of the top plate 3 through a bearing. The outer wall of the slide bar 401 is slidably sleeved with a guardrail 1 403, a guardrail 2 404, and a guardrail 3 405 in sequence from bottom to top. A sliding seat 1 4031 is fixedly installed at the four corners of the guardrail 1 403, a sliding seat 2 4041 is fixedly installed at the four corners of the guardrail 2 404, and a sliding seat 3 4051 is fixedly installed at the four corners of the guardrail 3 405. The sliding seats 1 4031, ... The inner walls of the sliding seat 2 4041 and the sliding seat 3 4051 are respectively threadedly connected with the screw rod 1 4032, the screw rod 2 4042, and the screw rod 3 4052. The screw rod 1 4032, the screw rod 2 4042, and the screw rod 3 4052 are all fixedly sleeved on the rotating shaft 1 402. The outer wall of the rotating shaft 1 402 is fixedly installed with the bevel gear 1 409. The bevel gear 1 409 is meshed with the bevel gear 2 4010. The inner wall of the bevel gear 2 4010 is fixedly installed with the rotating shaft 2 408. The end of the rotating shaft 2 408 away from the bevel gear 2 4010 is fixedly installed with a dual-axis motor 407. The dual-axis motor 407 is fixedly installed. It is installed on the top of the top plate 3, and the front of the guardrail 2 404 and the guardrail 3 405 is provided with a rotating door 406, and the whole guardrail is designed as three separate guardrails, namely, the guardrail 1 403, the guardrail 2 404, and the guardrail 3 405, so that the height of the whole guardrail can be adjusted. That is, when the workers go up and down the top plate 3, the guardrail 1 403, the guardrail 2 404, and the guardrail 3 405 are moved downward and close together. After the workers stand on the top plate 3, the guardrail 1 403, the guardrail 2 404, and the guardrail 3 405 are moved upward and pulled up to prevent the workers from falling, that is, the retractable function of the folding cover is realized, and it is also strong enough. In order to support the impact and pressure of workers when they fall, a rotating door 406 is set to allow workers to enter and exit the guardrail. Through the transmission of bevel gear 1 409 and bevel gear 2 4010, when the dual-axis motor 407 drives the rotating shaft 2 408 to rotate, it can synchronously drive the rotating shaft 1 402 to rotate. The rotation of the rotating shaft 1 402 drives the screw rod 1 4032, the screw rod 2 4042, and the screw rod 3 4052 to rotate, and then adjust the height of the sliding seat 1 4031, the sliding seat 2 4041, and the sliding seat 3 4051, so as to realize the lifting and lowering of the height of the guardrail 1 403, the guardrail 2 404, and the guardrail 3 405;

[0025] The revolving door 406 comprises a door body 4061, which is rotatably connected to the outer wall of the second guardrail 404 and the third guardrail 405 through a hinge. A slot 4063 is provided on the outer wall of the door body 4061 at one end away from the hinge. A block 4062 is clamped on the inner wall of the slot 4063. The block 4062 is fixedly mounted on the second sliding seat 4041 and the third sliding seat 4051. A magnetic latch 4064 is inserted on the top of the door body 4061. The magnetic latch 4064 passes through the center of the block 4062. When entering or exiting the guardrail, the door body 4061 is rotated to open a gap on the second guardrail 404 and the third guardrail 405. When preventing falling, the door body 4061 is rotated until the block 4062 is clamped in the slot 4063, and then the magnetic latch 4064 is inserted from the top of the door body 4061 into the block 4062 to fix the door body 4061.

[0026] The thread pitch on screw rod 1 4032 is half of the thread pitch on screw rod 2 4042, and the thread pitch on screw rod 1 4032 is one third of the thread pitch on screw rod 3 4052. By utilizing the thread pitch difference on screw rod 1 4032, screw rod 2 4042, and screw rod 3 4052, when screw rod 1 4032, screw rod 2 4042, and screw rod 3 4052 rotate the same number of circles, the lifting distances of sliding seat 1 4031, sliding seat 2 4041, and sliding seat 3 4051 increase in sequence, that is, after guardrail 1 403, guardrail 2 404, and guardrail 3 405 are lifted, the spacings between top plate 3, guardrail 1 403, guardrail 2 404, and guardrail 3 405 are kept consistent, which is not only more beautiful, but also avoids the appearance of a large exposed space.

[0027] A protective shell 9 is fixedly installed on the top of the top plate 3, and the protective shell 9 covers the dual-axis motor 407 and the second rotating shaft 408 to prevent workers from stepping on the dual-axis motor 407 and the second rotating shaft 408;

[0028] A fixing plate 5 is fixedly installed on the side outer wall of the base 1, and a threaded rod 6 is threadedly connected to the inner wall of the fixing plate 5. The bottom end of the threaded rod 6 is rotatably connected to a pressure plate 7 through a bearing. Two fixing plates 5 are provided, and are respectively located on the left and right outer walls of the base 1. A rubber pad 8 is fixedly installed on the bottom of the pressure plate 7, and a turning handle is fixedly installed on the top of the threaded rod 6. The threaded rod 6 is rotated by turning the turning handle, so that the threaded rod 6 drives the pressure plate 7 to move downward, and then drives the rubber pad 8 to move downward and contact the ground, thereby increasing the resistance of the base 1 and preventing the base 1 from sliding when the worker stands on the top plate 3.

[0029] Working principle: When in use, after the worker stands on the top plate 3, he turns on the dual-axis motor 407 to drive the rotating shaft 2 408 to rotate, and then drives the bevel gear 2 4010 to rotate. The rotation of the bevel gear 2 4010 drives the bevel gear 1 409 to rotate, and then drives the rotating shaft 1 402 to rotate. The rotation of the rotating shaft 1 402 drives the screw rod 1 4032, the screw rod 2 4042, and the screw rod 3 4052 to rotate, so that the sliding seat 1 4031, the sliding seat 2 4041, and the sliding seat 3 4051 move up, and the guardrail 1 403, the guardrail 2 404, and the guardrail 3 405 are raised to prevent the worker from falling.

[0030] Based on the embodiments of the present utility model, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present utility model.

Claims

1. A falling prevention device for steel structure construction, comprising a base (1) and a top plate (3), wherein a lift (2) is arranged between the base (1) and the top plate (3), characterized in that: An anti-falling mechanism (4) is fixedly mounted on the top of the top plate (3); The anti-fall mechanism (4) comprises a slide bar (401) and a rotating shaft (402). The slide bar (401) is fixedly mounted on the top of the top plate (3). The bottom end of the rotating shaft (402) is rotatably connected to the top of the top plate (3) via a bearing. The outer wall of the slide bar (401) is slidably sleeved with a guardrail (403), a guardrail (404) and a guardrail (405) in sequence from bottom to top. A sliding seat (4031) is fixedly mounted at the four corners of the guardrail (403). A sliding seat (4041) is fixedly mounted at the four corners of the guardrail (404). A sliding seat (4051) is fixedly mounted at the four corners of the guardrail (405). The sliding seats (4031), (4041) and (4051) in contact with the rotating shaft (402) are arranged on the outer wall of the slide bar (401). The inner wall is respectively threadedly connected with a screw rod 1 (4032), a screw rod 2 (4042), and a screw rod 3 (4052); the screw rod 1 (4032), the screw rod 2 (4042), and the screw rod 3 (4052) are all fixedly sleeved on the rotating shaft 1 (402); the outer wall of the rotating shaft 1 (402) is fixedly installed with a bevel gear 1 (409); the bevel gear 1 (409) is meshed with a bevel gear 2 (4010); the inner wall of the bevel gear 2 (4010) is fixedly installed with a rotating shaft 2 (408); the end of the rotating shaft 2 (408) away from the bevel gear 2 (4010) is fixedly installed with a double-axis motor (407); the double-axis motor (407) is fixedly installed on the top of the top plate (3); and the front of the guardrail 2 (404) and the guardrail 3 (405) is provided with a rotating door (406).

2. A steel structure construction anti-falling device according to claim 1, characterized in that: The rotating door (406) comprises a door body (4061), wherein the door body (4061) is rotatably connected to the outer walls of guardrail 2 (404) and guardrail 3 (405) through hinges, a slot (4063) is provided on the outer wall of the door body (4061) at one end away from the hinge, a block (4062) is clamped on the inner wall of the slot (4063), and the block (4062) is fixedly mounted on sliding seat 2 (4041) and sliding seat 3 (4051), and a magnetic latch (4064) is inserted at the top of the door body (4061), and the magnetic latch (4064) passes through the center of the block (4062).

3. A steel structure construction anti-falling device according to claim 1, characterized in that: The thread pitch on the screw rod one (4032) is half of the thread pitch on the screw rod two (4042), and the thread pitch on the screw rod one (4032) is one third of the thread pitch on the screw rod three (4052).

4. A steel structure construction anti-falling device according to claim 1, characterized in that: A protective shell (9) is fixedly mounted on the top of the top plate (3), and the protective shell (9) covers the dual-axis motor (407) and the second rotating shaft (408).

5. The anti-falling device for steel structure construction according to claim 1, characterized in that: A fixing plate (5) is fixedly mounted on the side outer wall of the base (1), a threaded rod (6) is threadedly connected to the inner wall of the fixing plate (5), and a pressing plate (7) is rotatably connected to the bottom end of the threaded rod (6) via a bearing.

6. A steel structure construction anti-falling device according to claim 5, characterized in that: Two fixing plates (5) are provided and are respectively located on the left and right outer walls of the base (1); a rubber pad (8) is fixedly installed on the bottom of the pressing plate (7); and a turning handle is fixedly installed on the top of the threaded rod (6).

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