CN214034707U - Mechanical anti-falling device - Google Patents
Mechanical anti-falling device Download PDFInfo
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- CN214034707U CN214034707U CN202022581070.4U CN202022581070U CN214034707U CN 214034707 U CN214034707 U CN 214034707U CN 202022581070 U CN202022581070 U CN 202022581070U CN 214034707 U CN214034707 U CN 214034707U
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- 238000004080 punching Methods 0.000 claims description 3
- 230000033001 locomotion Effects 0.000 description 6
- 230000009194 climbing Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model relates to a scaffold frame safety device field especially relates to a machinery anti-falling device. The mechanical anti-falling device comprises a guide rail and a guide seat moving along the guide rail, wherein cross rods are uniformly arranged on the guide rail at intervals, the guide seat is provided with a rotating wheel which is rotatably meshed with the cross rods, one side of the rotating wheel is coaxially provided with a first gear which follows the rotating wheel, and the first gear is an incomplete gear; and a second gear meshed with the first gear is further arranged on the guide seat, and the second gear is fixedly connected with a naturally drooping rod. Through the technical scheme, the mechanical anti-falling device with the simple structure is provided, components such as springs are not needed, and the purpose of controlling the falling speed of the guide seat is achieved by utilizing the self weight and inertia of the vertical rod.
Description
Technical Field
The utility model relates to a scaffold frame safety device field especially relates to a machinery anti-falling device.
Background
A large amount of lifting equipment is used in the existing construction, and the lifting equipment is used as a safety guarantee on the premise of ensuring normal lifting. Generally, a lifting device includes a lifting system, a control system, a lifting rail, a guide base moving along the rail, and the like.
The spring used on the climbing scaffold of the existing building realizes the anti-falling effect. For example, the Chinese patent publication Nos. CN 101519910A and CN 101302890A. However, the mechanical device is still for a long time and is easy to rust and block in rainy days. Or the scaffold can not be lifted normally. Or even more so, the failure of the fall arrest device.
SUMMERY OF THE UTILITY MODEL
The utility model discloses mechanical anti-falling device.
The technical problem to be solved is that: the existing anti-falling device taking the spring as the reset driving force is easy to lose efficacy and clamp after experiencing overcast and rainy days, so that potential safety hazards are caused.
In order to solve the technical problem, the utility model discloses mechanical anti-falling device adopts following scheme.
The mechanical anti-falling device comprises a guide rail and a guide seat moving along the guide rail, wherein cross rods are uniformly arranged on the guide rail at intervals, the guide seat is provided with a rotating wheel which is rotatably meshed with the cross rods, one side of the rotating wheel is coaxially provided with a first gear which follows the rotating wheel, and the first gear is an incomplete gear; and a second gear meshed with the first gear is further arranged on the guide seat, and the second gear is fixedly connected with a naturally drooping rod.
Further, the second gear is arranged on one side, away from the guide rail, of the first gear.
Further, the drop rod extends downwards from the middle of the second gear, and the length of the drop rod is larger than the center distance between the first gear and the second gear.
Further, the diameter of the rotating wheel is larger than that of the first gear, so that the first gear is prevented from interfering with the guide rail.
Further, the cross bars arranged at uniform intervals are rack-shaped cross bars, or are latticed blocks left after punching on the long plate, or are rod-shaped objects arranged at intervals.
Further, a plurality of rotating teeth are formed on the outer circumferential surface of the rotating wheel, and the rotating teeth are inserted into the gaps between the cross bars.
Further, the cross bars arranged at even intervals are racks, and the rotating wheels are gears matched with the racks.
Furthermore, the rotating wheel and the first gear are arranged on the guide seat through the same rotating shaft; the rotating shaft of the second gear is parallel to the rotating shaft of the first gear.
Compared with the prior art, the utility model, the mechanical falling-proof device has the following beneficial effects:
the same with the prior art, the utility model discloses also have the guide rail and along the guide bracket of guide rail motion, even interval is provided with the horizontal pole on the guide rail, then install on the guide bracket with horizontal pole meshed runner, the relative motion of guide bracket and guide rail can be controlled in the rotation of control runner. When the anti-falling device is arranged, the guide rail and the climbing frame are parallel and level, and then the guide seat is fixed on equipment needing anti-falling safety.
The utility model discloses changed and realized preventing that the saddle from descending too fast technical scheme through the spring drive brake card commonly used among the prior art, driven incomplete gear through the gyro wheel also be exactly first gear revolve, then first gear and second gear engagement, fixed the flagging pole that hangs down of nature that sets up on the second gear.
When the guide seat descends, the rotating wheel on the guide seat is meshed with the cross rod of the guide rail in a rotating mode, so that the rotating wheel can rotate to drive the first gear to rotate, and further the second gear and the vertical rod fixed on the second gear are driven to rotate.
When the descending speed of the guide seat is low, the first gear is an incomplete gear, firstly, the toothed part of the first gear drives the second gear to rotate, after the vertical rod rotates for an angle smaller than 180 degrees, the non-toothed part of the first gear meets the second gear, at the moment, the vertical rod returns to a vertical drooping natural state due to self weight, and then, the toothed part of the first gear meets the second gear again to repeat the process. At the moment, the second gear and the drop rod only swing repeatedly and cannot influence the descending of the guide seat along the guide rail.
When the guide seat surpassed the regulation speed and descended fast, the slew velocity of runner can be fast, the speed of first gear will also be fast like this, when the toothed part of first gear drove the rotation of second gear, second gear and drop rod will obtain bigger initial velocity, the drop rod can't in time get back to perpendicular decurrent position owing to inertia and time are too short when the toothless part of second gear meets with first gear, will be driven constantly upward movement by first gear until meeting and blocking with pivot or the horizontal pole of first finger wheel, can't continue the motion again when the toothed part of first gear drives the second gear again, thereby lock the second gear. Thereby realizing the problem of preventing the guide seat from descending too fast.
Through the technical scheme, the mechanical anti-falling device with the simple structure is provided, components such as springs are not needed, and the purpose of controlling the falling speed of the guide seat is achieved by utilizing the self weight and inertia of the vertical rod.
Drawings
Fig. 1 is a perspective view of the mechanical fall-preventing device of the present invention;
fig. 2 is a top view of the mechanical fall-preventing device of the present invention;
fig. 3 is a side view of the mechanical fall-preventing device of the present invention when the vertical rod naturally droops;
fig. 4 is a side view of the mechanical fall-preventing device of the present invention when the rod is stuck.
Description of reference numerals: the device comprises a guide rail 1, a cross bar 2, a guide seat 3, a rotating wheel 4, a first gear 5, a second gear 6 and a vertical rod 7.
Detailed Description
The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings. It is to be understood that the description of the embodiments herein is for purposes of illustration and explanation only and is not intended to limit the invention.
In the present invention, unless otherwise specified, the use of directional terms such as "upper, lower, left, and right" generally means upper, lower, left, and right as illustrated with reference to fig. 1; "inner and outer" refer to the inner and outer relative to the profile of the components themselves. The present invention will be described in detail with reference to the accompanying drawings in conjunction with embodiments.
In order to solve the problem that the spring is easy to lose efficacy and block after experiencing overcast and rainy days in the existing anti-falling device taking the spring as the reset driving force, so as to cause potential safety hazard, the utility model provides a mechanical anti-falling device, as shown in figures 1-4:
the mechanical anti-falling device comprises a guide rail 1 and a guide seat 3 moving along the guide rail 1, wherein cross rods 2 are uniformly arranged on the guide rail 1 at intervals, a rotating wheel 4 which is rotatably meshed with the cross rods 2 is installed on the guide seat 3, a first gear 5 which follows the rotating wheel 4 is coaxially arranged on one side of the rotating wheel 4, and the first gear 5 is an incomplete gear; the guide seat 3 is also provided with a second gear 6 meshed with the first gear 5, and the second gear 6 is fixedly connected with a naturally drooping rod 7.
The same with the prior art, the utility model discloses also have guide rail 1 and guide holder 3 along the motion of guide rail 1, even interval is provided with horizontal pole 2 on guide rail 1, then install on guide holder 3 with the runner 4 of horizontal pole 2 meshing, the relative motion of guide holder 3 and guide rail 1 can be controlled to the rotation of control runner 4. When the anti-falling device is arranged, the guide rail 1 and the climbing frame are parallel and level, and then the guide seat 3 is fixed on equipment needing anti-falling safety.
The utility model discloses changed the technical scheme who drives the brake card through the spring and realize preventing that guide holder 3 from descending too fast commonly used among the prior art, driven incomplete gear through the gyro wheel and also be exactly first gear 5 and rotate, then first gear 5 and the meshing of second gear 6, fixed the flagging pole 7 that hangs down of nature that sets up on second gear 6.
When the guide seat 3 descends, the rotating wheel 4 on the guide seat 3 is rotationally meshed with the cross rod 2 of the guide rail 1, so that the rotating wheel 4 can rotate to drive the first gear 5 to rotate, and further drive the second gear 6 and the vertical rod 7 fixed on the second gear 6 to rotate.
When the descending speed of the guide seat 3 is low, because the first gear 5 is an incomplete gear, firstly the toothed part of the first gear 5 drives the second gear 6 to rotate, after the drop rod 7 rotates for an angle less than 180 degrees, the non-toothed part of the first gear 5 meets the second gear 6, at the moment, the drop rod 7 returns to a natural vertically-drooping state due to self weight, and then the toothed part of the first gear 5 meets the second gear 6 again to repeat the process. The second gear 6 and the drop rod 7 only swing repeatedly at this time, and the guide base 3 does not influence the descending along the guide rail 1.
When the guide seat 3 is rapidly lowered beyond a specified speed, the rotating speed of the rotating wheel 4 is increased, so that the speed of the first gear 5 is increased, when the toothed part of the first gear 5 drives the second gear 6 to rotate, the second gear 6 and the vertical rod 7 obtain a larger initial speed, when the non-toothed part of the second gear 6 meets the first gear 5, the vertical rod 7 cannot timely return to a vertical downward position due to inertia and too short time, the vertical rod is driven by the first gear 5 to continuously move upwards until meeting and being clamped with the rotating shaft of the first finger wheel or the cross rod 2, and when the toothed part of the first gear 5 drives the second gear 6 again, the vertical rod cannot continuously move, so that the second gear 6 is locked. This prevents the guide base 3 from descending too fast.
Through the technical scheme, the mechanical anti-falling device with the simple structure is provided, components such as springs are not needed, and the purpose of controlling the falling speed of the guide seat 3 is achieved by utilizing the self weight and inertia of the vertical rod 7.
As shown in fig. 1, the guide rail 1 is a rail installed to be attached to a building or a climbing frame, or the climbing frame itself. The guide base 3 is fitted with the guide rail 1 to be movable along the guide rail 1, and the guide rail 1 is provided with cross bars 2 arranged at uniform intervals, and the cross bars 2 are mainly used for being meshed with the rotating wheel 4 in the prior art. The cross bars 2 arranged at uniform intervals are lattice blocks left after punching on the long plate or rod-shaped objects arranged at intervals. A plurality of rotating teeth are radially distributed on the outer circumferential surface of the runner 4, and the rotating teeth are inserted into the gaps between the rails 2 so as to be rotatably engaged with the guide rail 1 when the runner 4 moves up and down and to be caught on the guide rail 1 when the runner 4 is locked. Meanwhile, the cross bars 2 can also be replaced by racks, and the rotating wheel 4 is changed into a gear matched with the racks, and the rotating teeth are the teeth distributed on the gear.
The first gear 5 is an incomplete gear, and teeth on the first gear 5 are distributed on the first gear 5 in a sector shape. At the same time it is necessary to ensure that the toothed part of the first gear wheel 5 cannot drive the drop leg 7 from the natural downwardly hanging state to the blocking position or that the drop leg 7 is rotated over 180 ° at a time. The arc occupied by the toothless part of the first gear wheel 5 needs to be large enough to ensure that the drop rod 7 has time to fall back to the initial state. Specifically, it is necessary to specifically calculate the maximum falling speed, the gear ratio, the length position of the drop rod 7, and the like.
As shown in fig. 1, the second gear 6 is arranged on the side of the first gear 5 remote from the guide rail 1. Thus, the bar 7 must first be turned over 180 ° beyond the highest point in order to jam. The drop rod 7 extends downwards from the middle of the second gear 6, and the length of the drop rod 7 is larger than the center distance between the first gear 5 and the second gear 6. At the same time the drop leg 7 needs to be driven by gravity to return spontaneously to the initial position, so the entire second gear 6 together with the centre of gravity of the drop leg 7 needs to be offset from the axis of rotation of the second gear 6. The wheel 4 is larger in diameter than the first gear 5 as shown in fig. 2 to avoid interference of the first gear 5 with the guide rail 1.
The utility model discloses a working method: when the guide seat 3 descends, the rotating wheel 4 on the guide seat 3 is rotationally meshed with the cross rod 2 of the guide rail 1, so that the rotating wheel 4 can rotate to drive the first gear 5 to rotate, and further drive the second gear 6 and the vertical rod 7 fixed on the second gear 6 to rotate. When the descending speed of the guide seat 3 is low, because the first gear 5 is an incomplete gear, firstly the toothed part of the first gear 5 drives the second gear 6 to rotate, after the drop rod 7 rotates for an angle less than 180 degrees, the non-toothed part of the first gear 5 meets the second gear 6, at the moment, the drop rod 7 returns to a natural vertically-drooping state due to self weight, and then the toothed part of the first gear 5 meets the second gear 6 again to repeat the process. The second gear 6 and the drop rod 7 only swing repeatedly at this time, and the guide base 3 does not influence the descending along the guide rail 1.
When the guide seat 3 is rapidly lowered beyond a specified speed, the rotating speed of the rotating wheel 4 is increased, so that the speed of the first gear 5 is increased, when the toothed part of the first gear 5 drives the second gear 6 to rotate, the second gear 6 and the vertical rod 7 obtain a larger initial speed, when the non-toothed part of the second gear 6 meets the first gear 5, the vertical rod 7 cannot timely return to a vertical downward position due to inertia and too short time, the vertical rod is driven by the first gear 5 to continuously move upwards until meeting and being clamped with the rotating shaft of the first finger wheel or the cross rod 2, and when the toothed part of the first gear 5 drives the second gear 6 again, the vertical rod cannot continuously move, so that the second gear 6 is locked. This prevents the guide base 3 from descending too fast.
The above-mentioned embodiments are only described for the preferred embodiments of the present invention, and are not limited to the scope of the present invention, and the ordinary skilled person in the art can modify and improve the technical solution of the present invention without departing from the design spirit of the present invention, including using the present invention in old house decoration, and all should fall into the protection scope defined by the claims of the present invention.
Claims (8)
1. The mechanical anti-falling device comprises a guide rail (1) and a guide seat (3) moving along the guide rail (1), wherein cross rods (2) are uniformly arranged on the guide rail (1) at intervals, a rotating wheel (4) rotatably meshed with the cross rods (2) is arranged on the guide seat (3), and the mechanical anti-falling device is characterized in that,
a first gear (5) which follows the rotating wheel (4) is coaxially arranged on one side of the rotating wheel (4), and the first gear (5) is an incomplete gear; the guide seat (3) is also provided with a second gear (6) meshed with the first gear (5), and the second gear (6) is fixedly connected with a naturally drooping rod (7).
2. Mechanical fall arrest device according to claim 1, characterized in that the second gear wheel (6) is arranged on the side of the first gear wheel (5) facing away from the guide rail (1).
3. Mechanical fall arrest device according to claim 2, characterized in that the drop rod (7) extends downwards from the middle of the second gear wheel (6), the length of the drop rod (7) being greater than the centre distance between the first (5) and second (6) gear wheels.
4. Mechanical fall arrest device according to claim 1, characterized in that the diameter of the wheel (4) is larger than the first gear (5) to avoid that the first gear (5) interferes with the guide rail (1).
5. Mechanical fall arrest device according to claim 1, characterized in that the evenly spaced cross bars (2) are lattice blocks left after punching on long plates or are rod-like objects arranged at intervals.
6. Mechanical fall arrest device according to claim 5, characterized in that the outer circumference of the wheel (4) is formed with a number of rotating teeth which are inserted into the gaps between the bars (2).
7. Mechanical fall arrest device according to claim 1, characterized in that the evenly spaced cross bars (2) are racks and the wheels (4) are gears cooperating with the racks.
8. Mechanical fall arrest device according to claim 1, characterized in that the wheel (4) and the first gear (5) are mounted on the guide (3) by means of the same axis of rotation; the rotating shaft of the second gear (6) is parallel to the rotating shaft of the first gear (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022581070.4U CN214034707U (en) | 2020-11-10 | 2020-11-10 | Mechanical anti-falling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022581070.4U CN214034707U (en) | 2020-11-10 | 2020-11-10 | Mechanical anti-falling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214034707U true CN214034707U (en) | 2021-08-24 |
Family
ID=77357772
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022581070.4U Active CN214034707U (en) | 2020-11-10 | 2020-11-10 | Mechanical anti-falling device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214034707U (en) |
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2020
- 2020-11-10 CN CN202022581070.4U patent/CN214034707U/en active Active
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