Anti-falling device

Abstract

The utility model relates to the technical field of building construction, in particular to an anti-falling device which comprises a bottom plate, four stand columns are fixed to the top face of the bottom plate, a rectangular bin is fixed to the top faces of the four stand columns, a lifting plate is slidably connected between the four stand columns, and anti-falling assemblies used for preventing the lifting plate from falling are arranged on the four stand columns. A driving assembly used for driving the lifting plate to move up and down is arranged in the rectangular bin, and the anti-falling assembly comprises an anti-falling bin slidably connected to the peripheral wall of the stand column. According to the anti-falling device, when the anti-falling device is used, the lifting plate can slide up and down along the four stand columns, so that workers can conveniently ascend and descend to different heights for building construction, and anti-falling assemblies are arranged on the stand columns; when the lifting plate falls down, the four anti-falling assemblies can be automatically driven to clamp the connecting positions of the four stand columns and the lifting plate to form movement obstacles, then the effect of preventing the lifting plate from falling down rapidly is achieved, the safety of the device is improved, practicability is better, and application and popularization are more convenient.

Description

Technical Field

[0001] The present application relates to the technical field of building construction, and in particular to a fall prevention device. Background Art

[0002] Buildings are constructed of steel structures and concrete. During the construction process, due to the high height of the buildings, construction workers usually need to perform high-altitude operations. When performing high-altitude operations, they will use scaffolding, construction platforms and other devices.

[0003] For example, a Chinese patent (publication number: CN218508972U) discloses a construction lifting platform, including a horizontal base plate, a lead screw is vertically arranged on the horizontal base plate, a lead screw nut is screwed on the lead screw, a storage plate is provided above the horizontal base plate, one side end of the storage plate is fixedly connected to the lead screw nut, two columns are vertically arranged on both sides of the lead screw on the horizontal base plate, a motor seat is connected to the top of the two columns, a drive motor is installed on the motor seat, and the drive motor is used to drive the lead screw to rotate.

[0004] The above-mentioned search patent still has some shortcomings. The storage plate is driven up and down by a single screw and a screw nut fixed on one side of the storage plate, and lacks other safety anti-fall structures. When the storage plate rises with heavy objects, the screw nut drives the storage plate to move up. The connection between the screw nut and the storage plate is subject to great force. Long-term use can easily cause metal fatigue, resulting in disconnection between the screw nut and the storage plate, making the storage plate prone to rapid falling and causing danger. The safety is relatively low, so an anti-fall device is proposed to solve the above problems. Utility Model Content

[0005] In response to the shortcomings of the prior art, the present application provides an anti-fall device with the advantages of good anti-fall effect and high safety. It solves the problem that the device disclosed in the above-mentioned search patent, when in use, drives the storage plate to move up through a single screw and a screw nut, which is prone to malfunction and causes the storage plate to fall rapidly, resulting in low safety.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical solutions: an anti-falling device, comprising a bottom plate, four columns are fixed on the top surface of the bottom plate, rectangular bins are fixed on the top surfaces of the four columns, a lifting plate is slidably connected between the four columns, an anti-falling component for preventing the lifting plate from falling is provided on the four columns, and a driving component for driving the lifting plate to move up and down is provided in the rectangular bin;

[0007] The anti-falling assembly includes an anti-falling bin slidably connected to the outer peripheral wall of the column, the top surface of the anti-falling bin is fixed to the bottom surface of the lifting plate, the front side of the column is provided with a T-slot, the front side of the inner cavity of the anti-falling bin is rotatably connected with a rotating rod whose rear end extends to the inside of the T-slot, a gear is fixed to the rear end of the rotating rod, a rack meshing with the gear is fixed on the inner wall of the T-slot, a plurality of sliding cylinders are fixed on the outer peripheral wall of the rotating rod, a slider is slidably connected in the sliding cylinder, a connecting rod is fixed on the side of the slider away from the rotating rod, a spring is mounted on the outer peripheral wall of the connecting rod, an arc-shaped toothed plate is fixed on the end of the connecting rod away from the slider, and an annular toothed plate is fixed on the front side of the inner cavity of the anti-falling bin.

[0008] By adopting the above technical solution, the lifting plate can slide up and down along the four columns, which makes it convenient for workers to lift to different heights for construction. Anti-fall components are provided on the columns. When the lifting plate suddenly falls rapidly, the four anti-fall components will be automatically driven to jam the connection between the four columns and the lifting plate to form a movement obstacle, thereby achieving the effect of preventing the lifting plate from falling rapidly, improving the safety of the device, being more practical, and being easier to promote and use.

[0009] Furthermore, the driving assembly includes a double-axis motor fixed on the inner bottom wall of the rectangular bin, circular rods are fixed on the output shafts on the left and right sides of the double-axis motor, two rotating shafts distributed on the left and right are rotatably connected between the front and rear inner walls of the rectangular bin, worms are fixed on the opposite ends of the two circular rods, worm wheels meshing with the worms are fixed on the outer peripheral walls of the rotating shafts, winding drums are fixed on the outer peripheral walls of the circular rods and the outer peripheral walls of the rotating shafts, two steel ropes whose bottom ends pass through the rectangular bin and are fixed to the top surface of the lifting plate are fixed to the bottom surface of the winding drum, and a protective net is fixed between the two steel ropes on the same winding drum.

[0010] By adopting the above technical solution, the lifting plate is driven by the set driving assembly to complete the up and down movement. The driving assembly and the lifting plate are connected by multiple steel ropes. There are multiple stress points, so that the lifting plate is subjected to more balanced stress, avoiding single stress point increase wear and reducing the service life of the device. At the same time, even if one of the stress points is disconnected, the lifting plate will not lose driving force instantly and fall, thereby reducing the probability of the lifting plate falling and further improving the practicality and safety of the device.

[0011] Furthermore, the bottom plate is vertically opposite to the rectangular warehouse, the four columns are respectively close to the four corners of the top surface of the bottom plate, and the top surface of the lifting plate is provided with four sliding holes for the columns to pass through and be slidably connected thereto.

[0012] The adoption of the technical solution facilitates the lifting plate to stably slide up and down between the four columns.

[0013] Furthermore, the top surface of the anti-falling bin is formed with an opening connected to the interior thereof, and the bottom surface of the anti-falling bin is provided with a through hole for the column to pass through and be slidably connected thereto.

[0014] By adopting the above technical solution, the lifting plate can also synchronously drive the anti-fall bin to slide up and down when sliding up and down.

[0015] Furthermore, the T-shaped groove is used for the rotating rod and the gear to move up and down inside it, and the end of the slide cylinder away from the rotating rod is provided with a connecting hole for the connecting rod to pass through and be slidably connected with it, and the spring is located on the inner side of the slide cylinder.

[0016] The above technical solution makes it easy for the slider to slide inside the slide tube and compress the spring, while pushing the connecting rod to move.

[0017] Furthermore, the annular tooth plate and the rotating rod are located on the same central axis, the arc-shaped tooth plate is located on the inner side of the annular tooth plate, and the opposing surfaces of the two are tooth surfaces, and the plurality of slide cylinders are equidistantly distributed along the circumferential direction of the rotating rod.

[0018] By adopting the above technical solution, when the rotating rod rotates, the multiple arc-shaped tooth plates are moved toward the annular tooth plate and then meshed with the annular tooth plate to form a limit, thereby preventing the lifting plate from falling rapidly.

[0019] Furthermore, a long hole is provided on the bottom surface of the rectangular bin and below the winding drum, and the opposite ends of the two worms are rotatably connected to the inner wall of the rectangular bin.

[0020] By adopting the above technical solution, the long holes are provided to facilitate the steel wire rope and the protective net to pass through the rectangular bin for movement, and the rotational connection between the worm and the rectangular bin is beneficial to improving the stability during rotation.

[0021] Furthermore, the two steel wire ropes on the same winding drum are distributed along the axial direction of the winding drum, so that the protective net is arranged at the bottom of the winding drum along the axial direction thereof.

[0022] The above technical solution makes it easy to set up multiple protective nets on the left and right sides of the top surface of the lifting platform and near the front side. Together with the wire rope, this can serve as a protective fence to prevent workers from accidentally falling from the lifting platform.

[0023] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0024] 1. When the anti-fall device is in use, the lifting plate can slide up and down along the four columns, so that workers can be lifted to different heights for construction. The columns are provided with anti-fall components. When the lifting plate suddenly falls rapidly, the four anti-fall components will be automatically driven to jam the connection between the four columns and the lifting plate to form a movement obstacle, thereby preventing the lifting plate from falling rapidly, improving the safety of the device, being more practical, and being more convenient for promotion and use.

[0025] 2. In the anti-fall device, the lifting plate is driven by a set driving assembly to complete the up and down movement. There are multiple force points between the driving assembly and the lifting plate, so that the force on the lifting plate is more balanced, avoiding the increase of wear and reducing the service life of the device due to single force. At the same time, even if one of the force points is disconnected, the lifting plate will not lose the driving force instantly and fall, thereby reducing the probability of the lifting plate falling and further improving the practicality and safety of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A three-dimensional schematic diagram of the present application;

[0027] Figure 2 A schematic top view of the anti-fall assembly of the present application;

[0028] Figure 3 This is a top view schematic diagram of the drive assembly of this application.

[0029] In the figure: 1. bottom plate; 2. column; 3. rectangular bin; 4. lifting plate; 5. anti-fall assembly; 501. anti-fall bin; 502. T-slot; 503. rotating rod; 504. gear; 505. rack; 506. slide; 507. slider; 508. connecting rod; 509. spring; 510. arc gear plate; 511. annular gear plate; 6. driving assembly; 601. dual-axis motor; 602. circular rod; 603. rotating shaft; 604. worm; 605. worm wheel; 606. winding drum; 607. wire rope; 608. protective net. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present application.

[0031] See also Figure 1-2The anti-falling device in this embodiment includes a bottom plate 1, four columns 2 are fixed on the top surface of the bottom plate 1, rectangular bins 3 are fixed on the top surfaces of the four columns 2, and a lifting plate 4 is slidably connected between the four columns 2. The bottom plate 1 and the rectangular bin 3 are opposite to each other up and down, and the four columns 2 are respectively close to the four corners of the top surface of the bottom plate 1. Four sliding holes for the columns 2 to penetrate and be slidably connected thereto are opened on the top surface of the lifting plate 4. When in use, the lifting plate 4 can slide up and down along the four columns 2 through the set lifting plate 4, so as to facilitate workers to lift to different heights for construction. The four columns 2 are all provided with anti-falling components 5 for preventing the lifting plate 4 from falling. The anti-falling components 5 are provided on the columns 2. When the lifting plate 4 suddenly falls rapidly, it will automatically drive the four The anti-fall component 5 jams the connection between the four columns 2 and the lifting plate 4 to form a movement obstacle, thereby achieving the effect of preventing the lifting plate 4 from falling rapidly, improving the safety of the lifting device, improving practicality, and being more convenient for promotion and use. A driving component 6 for driving the lifting plate 4 to move up and down is provided in the rectangular warehouse 3. The lifting plate 4 is driven by the set driving component 6 to complete the up and down movement. There are multiple force points between the driving component 6 and the lifting plate 4, so that the force on the lifting plate 4 is more balanced, avoiding single-point force to increase wear and reduce the service life of the device. At the same time, multiple force points are set. Even if a certain force point is disconnected, the lifting plate 4 will not lose driving force instantly and fall, thereby reducing the probability of the lifting plate 4 falling, further improving the practicality and safety of the device.

[0032] See also Figure 1-2The anti-fall component 5 includes an anti-fall bin 501 slidably connected to the outer peripheral wall of the column 2, the top surface of the anti-fall bin 501 is formed with an opening connected to the interior thereof, the bottom surface of the anti-fall bin 501 is provided with a through hole for the column 2 to penetrate and be slidably connected thereto, the top surface of the anti-fall bin 501 is fixed to the bottom surface of the lifting plate 4, a T-slot 502 is provided on the front side of the column 2, the front side of the inner cavity of the anti-fall bin 501 is rotatably connected with a rotating rod 503 whose rear end extends to the interior of the T-slot 502, a gear 504 is fixed to the rear end of the rotating rod 503, the T-slot 502 is used for the rotating rod 503 and the gear 504 to move up and down therein, and a rack 505 meshing with the gear 504 is fixed on the inner wall of the T-slot 502. When in use, the lifting plate 4 drives the anti-fall bin 501 to move along the column 2 slides up and down. When the lifting plate 4 falls rapidly, the anti-falling bin 501 also falls rapidly, thereby driving the rotating rod 503 and the gear 504 to move downward. The gear 504 meshes with the rack 505. When moving downward, the gear 504 is driven to rotate through the rack 505, and the gear 504 drives the rotating rod 503 to rotate. A plurality of slide cylinders 506 are fixed on the outer peripheral wall of the rotating rod 503. A slider 507 is slidably connected inside the slide cylinder 506. Further, the rotating rod 503 drives the plurality of slide cylinders 506 to revolve around the rotating rod 503, so that the slider 507 inside the slide cylinder 506 also revolves around the rotating rod 503. Since the lifting plate 4 falls rapidly, the rotating rod 503 has a certain rotation speed, and the slider 507 slides inside the slide cylinder 506 to the side away from the rotating rod 503 under the centrifugal force.

[0033] See also Figure 1-2 A connecting rod 508 is fixed to the side of the slider 507 away from the rotating rod 503, and a connecting hole for the connecting rod 508 to pass through and be slidably connected to the sliding cylinder 506 is provided at one end of the sliding cylinder 506 away from the rotating rod 503. A spring 509 is mounted on the outer peripheral wall of the connecting rod 508, and an arc-shaped tooth plate 510 is fixed to the end of the connecting rod 508 away from the slider 507. An annular tooth plate 511 is fixed to the front of the inner cavity of the anti-fall warehouse 501. The spring 509 is located on the inner side of the sliding cylinder 506, and the annular tooth plate 511 and the rotating rod 503 are located on the same central axis. The arc-shaped tooth plate 510 is located on the inner side of the annular tooth plate 511 , and the opposing surfaces of the two are tooth surfaces, and multiple slide cylinders 506 are equidistantly distributed along the circumferential direction of the rotating rod 503. Further, the slider 507 slides to push the connecting rod 508 and compress the spring 509, and the connecting rod 508 pushes the arc-shaped tooth plate 510 to move away from the rotating rod 503 and meshes with the annular tooth plate 511. The tooth surfaces of the arc-shaped tooth plate 510 and the annular tooth plate 511 mesh with each other to form a movement obstacle, and the rotating rod 503 is stuck and cannot rotate, thereby making the gear 504 unable to rotate, and the lifting plate 4 cannot continue to fall, thereby achieving the effect of preventing the lifting plate 4 from falling rapidly due to an accident.

[0034] It should be noted that the elastic force of the spring 509 needs to be greater than the gravity of the slider 507 itself. In this way, when the lifting plate 4 slides up and down normally, the rotation speed of the rotating rod 503 is relatively low. When the slider 507 rotates to the top of the connecting rod 508, it will not slide down due to the action of gravity, causing the arc-shaped tooth plate 510 to engage with the annular tooth plate 511.

[0035] See also Figure 1 and Figure 3 In this embodiment, the driving assembly 6 includes a double-axis motor 601 fixed on the inner bottom wall of the rectangular warehouse 3, and circular rods 602 are fixed on the output shafts on the left and right sides of the double-axis motor 601. Two rotating shafts 603 distributed on the left and right are rotatably connected between the front and rear inner walls of the rectangular warehouse 3. Worm 604 is fixed on the opposite ends of the two circular rods 602. A worm wheel 605 meshing with the worm 604 is fixed on the outer peripheral wall of the rotating shaft 603. When it is necessary to control the lifting plate 4 to move up and down so that workers can construct buildings at different heights, the double-axis motor 601 is started, and the double-axis motor 601 drives the two circular rods 602 to stop rotating, and the two circular rods 602 drive the two worms 604 rotates, and the worm 604 rotates through the worm gear 605, and the two rotating shafts 603 are electrically conductive. A winding drum 606 is fixed on the outer peripheral wall of the circular rod 602 and the outer peripheral wall of the rotating shaft 603. Two steel wire ropes 607 with bottom ends passing through the rectangular bin 3 and fixed to the top surface of the lifting plate 4 are fixed on the bottom surface of the winding drum 606. A protective net 608 is fixed between the two steel wire ropes 607 on the same winding drum 606. Further, the circular rod 602 and the rotating shaft 603 drive the winding drum 606 to rotate, and wind up the steel wire ropes 607 and the protective net 608, and the lifting plate 4 can be pulled up by the steel wire ropes 607, and the lifting plate 4 can be moved down by reversing the dual-axis motor 601.

[0036] It should be noted that the control method of the dual-axis motor 601 mentioned in the present application is controlled by a controller. The control circuit of the controller can be implemented by simple programming by technicians in this field. The provision of power is also common knowledge in this field. This application is mainly used to protect mechanical devices, so this application will no longer explain the control method and circuit connection in detail.

[0037] See also Figure 1 and Figure 3In this embodiment, a long hole is opened on the bottom surface of the rectangular bin 3 and below the winding drum 606. The opposite ends of the two worms 604 are rotatably connected to the inner wall of the rectangular bin 3. The circular rod 602 and the rotating shaft 603 are transmitted through the worm 604 and the worm wheel 605. The self-locking characteristics of the worm wheel 605 and the worm 604 can effectively improve the control of the dual-axis motor 601 over the rotating shaft 603 and increase the stability of the equipment operation. The two steel wire ropes 607 on the same winding drum 606 are distributed along the axial direction of the winding drum 606, so that the protective net 608 is arranged at the bottom of the winding drum 606 along the axial direction thereof. The protective net 608 and the steel wire rope 607 can act as a protective fence to prevent workers from falling from the lifting platform 4 due to accidents.

[0038] The working principle of the above embodiment is:

[0039] (1) When in use, the lifting plate 4 drives the anti-falling bin 501 to slide up and down along the column 2. When the lifting plate 4 falls rapidly, the anti-falling bin 501 will also fall rapidly, thereby driving the rotating rod 503 and the gear 504 to move downward. The gear 504 is meshed with the rack 505. When moving downward, the gear 504 is driven to rotate through the rack 505, and the gear 504 drives the rotating rod 503 to rotate. Further, the rotating rod 503 drives multiple slides 506 to revolve around the rotating rod 503, so that the slider 507 inside the slide 506 also revolves around the rotating rod 503. As the lifting plate 4 falls rapidly, the rotating rod 503 has At a certain rotation speed, the slider 507 slides inside the slide tube 506 to the side away from the rotating rod 503 due to the centrifugal force. Further, the slider 507 slides to push the connecting rod 508 and compress the spring 509. The connecting rod 508 pushes the arc gear plate 510 to move away from the rotating rod 503 and meshes with the annular gear plate 511. The meshing of the tooth surfaces of the arc gear plate 510 and the annular gear plate 511 forms a motion obstacle, and the rotating rod 503 is stuck and cannot rotate, thereby making the gear 504 unable to rotate, and the lifting plate 4 cannot continue to fall, thereby achieving the effect of preventing the lifting plate 4 from falling rapidly due to an accident.

[0040] (2) When it is necessary to control the lifting plate 4 to move up and down so that workers can construct buildings at different heights, the dual-axis motor 601 is started. The dual-axis motor 601 drives the two circular rods 602 to rotate. The two circular rods 602 drive the two worms 604 to rotate. The worms 604 conduct electricity through the worm gear 605 to rotate the two rotating shafts 603. Further, the circular rods 602 and the rotating shaft 603 drive the winding drum 606 to rotate and wind up the wire rope 607 and the protective net 608. The wire rope 607 can pull the lifting plate 4 up, and the dual-axis motor 601 can be reversed to move the lifting plate 4 down.

Claims

1. An anti-fall device, comprising a base plate (1), characterized in that: Four columns (2) are fixed on the top surface of the bottom plate (1), a rectangular bin (3) is fixed on the top surface of the four columns (2), a lifting plate (4) is slidably connected between the four columns (2), an anti-falling component (5) for preventing the lifting plate (4) from falling is provided on each of the four columns (2), and a driving component (6) for driving the lifting plate (4) to move up and down is provided in the rectangular bin (3); The anti-falling assembly (5) comprises an anti-falling bin (501) slidably connected to the outer peripheral wall of the column (2); the top surface of the anti-falling bin (501) is fixed to the bottom surface of the lifting plate (4); the front surface of the column (2) is provided with a T-shaped slot (502); the front surface of the inner cavity of the anti-falling bin (501) is rotatably connected to a rotating rod (503) whose rear end extends into the interior of the T-shaped slot (502); a gear (504) is fixed to the rear end of the rotating rod (503); and a gear (504) is fixed to the inner wall of the T-shaped slot (502). A rack (505), a plurality of slide cylinders (506) are fixed on the outer peripheral wall of the rotating rod (503), a slider (507) is slidably connected inside the slide cylinder (506), a connecting rod (508) is fixed on the side of the slider (507) away from the rotating rod (503), a spring (509) is sleeved on the outer peripheral wall of the connecting rod (508), an arc-shaped tooth plate (510) is fixed on the end of the connecting rod (508) away from the slider (507), and an annular tooth plate (511) is fixed on the front side of the inner cavity of the anti-falling bin (501).

2. The anti-falling device according to claim 1, characterized in that: The driving assembly (6) comprises a double-axis motor (601) fixed on the inner bottom wall of the rectangular bin (3), circular rods (602) are fixed on the output shafts on the left and right sides of the double-axis motor (601), two rotating shafts (603) distributed on the left and right sides are rotatably connected between the front and rear inner walls of the rectangular bin (3), worms (604) are fixed on the opposite ends of the two circular rods (602), a worm wheel (605) meshing with the worms (604) is fixed on the outer peripheral wall of the rotating shaft (603), a winding drum (606) is fixed on the outer peripheral wall of the circular rod (602) and the outer peripheral wall of the rotating shaft (603), two steel wire ropes (607) whose bottom ends penetrate the rectangular bin (3) and are fixed to the top surface of the lifting plate (4) are fixed on the bottom surface of the winding drum (606), and a protective net (608) is fixed between the two steel wire ropes (607) on the same winding drum (606).

3. The anti-falling device according to claim 1, characterized in that: The bottom plate (1) and the rectangular bin (3) are vertically opposed to each other, the four upright posts (2) are respectively close to the four corners of the top surface of the bottom plate (1), and the top surface of the lifting plate (4) is provided with four sliding holes for the upright posts (2) to pass through and be slidably connected thereto.

4. The anti-falling device according to claim 1, characterized in that: The top surface of the anti-falling bin (501) is formed with an opening communicating with the interior thereof, and the bottom surface of the anti-falling bin (501) is provided with a through hole for the column (2) to pass through and be slidably connected thereto.

5. The anti-falling device according to claim 1, characterized in that: The T-slot (502) is used for allowing the rotating rod (503) and the gear (504) to move up and down inside the T-slot. The end of the slide cylinder (506) away from the rotating rod (503) is provided with a connecting hole for allowing the connecting rod (508) to pass through and be slidably connected thereto. The spring (509) is located on the inner side of the slide cylinder (506).

6. The anti-falling device according to claim 1, characterized in that: The annular tooth plate (511) and the rotating rod (503) are located on the same central axis, the arc-shaped tooth plate (510) is located on the inner side of the annular tooth plate (511), and the opposing surfaces of the two are tooth surfaces, and the plurality of slide cylinders (506) are equidistantly distributed along the circumferential direction of the rotating rod (503).

7. The anti-falling device according to claim 2, characterized in that: A long hole is provided on the bottom surface of the rectangular bin (3) and below the winding drum (606), and the opposite ends of the two worms (604) are rotatably connected to the inner wall of the rectangular bin (3).

8. The anti-falling device according to claim 2, characterized in that: The two steel wire ropes (607) on the same winding drum (606) are distributed along the axial direction of the winding drum (606), so that the protective net (608) is arranged at the bottom of the winding drum (606) along the axial direction thereof.

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