CN102303801B - Super low speed anti-falling safety device - Google Patents
Super low speed anti-falling safety device Download PDFInfo
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Abstract
The invention relates to a super low speed anti-falling safety device. The device comprises a safety device shell, a braking gear, a gear ring, a large bearing, a centrifugal block seat and a centrifugal block which are arranged in the shell, and a planetary gear acceleration mechanism which is arranged between the braking gear and a centrifugal speed control mechanism of the safety device. A sun wheel shaft in the planetary gear acceleration mechanism and a central gear shaft form a whole body; a planetary carrier is borne on a rolling bearing and the large bearing; and a planetary wheel is connected with the gear ring in an internal meshing mode and connected with the sun wheel shaft in an external meshing mode. The braking gear is connected with the planetary carrier and drives the planetary carrier to rotate in the same direction, and is axially fixed with the planetary carrier by a check ring; the planetary carrier drives the planetary wheel to rotate by a planetary wheel shaft; and the planetary wheel drives the sun wheel shaft to rotate in an accelerating mode. By adding the planetary gear acceleration mechanism, the low speed rotation of the braking gear is converted into high speed rotation, and the super low speed anti-falling safety device is used for constructing lifting platforms or low speed lifters, is stable in acting speed and convenient to arrange and disassemble, and has a rational structure and light self weight.
Description
Technical field
The present invention relates to vertical transportation machinery falling-proof safety device, particularly the anti-falling safety device of a kind of Ultra-Low Speed gear-and-rack type construction lifter or construction lift work platform.
Background technology
Along with the development of buildings decoration operating technique, occurred a kind ofly for replacing the building operation lifting table of scaffold, the use of lifting table greatly reduces the transportation of scaffold and the work capacity of setting up, and has larger future develop.But the safe operation of platform is related to personnel's security of the lives and property.Because the running velocity of platform is very low, according to the requirement of GB paper for approval < < lifting working platform for construction > >, the running velocity of lifting table is no more than 0.2m/s, the responsiveness of stipulating thus safety must not surpass 0.5m/s, and its desirable responsiveness should be within the scope of 0.25m/s ~ 0.30m/s.Traditional anti-falling safety device is subject to the impact of centrifugal-block deadweight; minimum stable running velocity is in 0.8m/s left and right; the needs that cannot meet lifting table protection, affect the development of lifting table and relevant operating technique, are therefore necessary to research and develop a kind of anti-falling safety device of low velocity.
In addition, similar anti-falling safety device have at present a kind of window cleaning machine hanging basket quincunx overspeed governor used, the defects such as volume is large, cost is high owing to there is, poor reliability, the more difficult verification experimental verification in scene, can not be applicable to gear-and-rack type construction lifter or construction lift work platform.
Summary of the invention
Task of the present invention is to provide a kind of super low speed anti-falling safety device; its responsiveness is stable, rational in infrastructure, deadweight is light, be applicable to low speed and Ultra-Low Speed work, has solved existing all kinds of gear-rack type lifter, construction lifting platform falling-proof safety technology and the problem of installing disappearance.
Technical solution of the present invention is as follows:
A kind of super low speed anti-falling safety device, comprise safety body skin, the spragging gear that enclosure interior is settled outside, gear ring, large bearing, centrifugal block and centrifugal-block, also comprise planetary wheel speed increasing mechanism, sets up between safety spragging gear and centrifugal speed control mechanism;
Described planetary wheel speed increasing mechanism comprises sun wheel shaft, antifriction-bearing box, pinion carrier, planet wheel spindle and satellite gear, sun wheel shaft is placed in the center in body skin, sun wheel shaft and sun gear shaft form one, pinion carrier is bearing on antifriction-bearing box and large bearing, in satellite gear and gear ring, be connected with a joggle, satellite gear is also connected with sun wheel shaft external toothing;
Described spragging gear is connected with pinion carrier and drives it to do equidirectional rotation, spragging gear and pinion carrier back-up ring axial restraint, and pinion carrier drives satellite gear to rotate by planet wheel spindle, and satellite gear drives sun wheel shaft speedup to rotate;
Described centrifugal block is arranged on sun gear shaft with axial back-up ring, sun gear shaft is one end that sun wheel shaft is arranged on centrifugal speed control mechanism, by bearing, be bearing in taper brake wheel and it is circumferentially free to rotate, centrifugal-block is bearing on centrifugal block and with sun wheel shaft and is together rotated by drag hook, between drag hook and centrifugal block, speed regulating spring is installed;
The described body skin inner side gummed corresponding with taper brake wheel lateral surface is provided with friction lining;
The end face of described taper brake wheel is with screw rod, centrifugal block and centrifugal-block are arranged on the inner side of taper brake wheel, on the end face screw rod of taper brake wheel, be equipped with by the connected pressurizing nut of resistance change, between pressurizing nut and body skin, disk spring is housed, predetermincd tension by disk spring makes taper brake wheel contact with friction lining, and resistance change is provided with long handle.
Described spragging gear is connected with pinion carrier by spline or flat key.
Described centrifugal block is arranged on sun gear shaft by flat key and axial back-up ring.
The long handle of described resistance change is partly provided with a set screw.
The planar section of described body skin small end is equipped with margin microswich.
Between described centrifugal-block and centrifugal block, by spring, be connected with drag hook.
The present invention is a kind of gradual anti-falling safety device for construction lifting platform or low speed elevation machine.When the running velocity of construction lifting platform or low speed elevation machine reaches the protection speed of safety device, safety action, lock torque is along with the increase of Brake displacement increases to reach the object of gradual braking gradually.
Super low speed anti-falling safety device of the present invention is to set up planetary wheel speed increasing mechanism between common safety spragging gear and centrifugal speed control mechanism, and the low speed rotation of spragging gear is converted into High Rotation Speed.The brake portion of safety has suitably reduced volume, uses original small dimension safety simultaneously, suitably lengthens brake screw part.Mounting flange is used common safety flange, and the installation dimension of original safety is remained unchanged.
Super low speed anti-falling safety device of the present invention is applicable to the anti-falling safe protection of Ultra-Low Speed gear-rack type lifter, construction lifting platform or window cleaning machine hanging basket; When being applied to window cleaning machine hanging basket overspeed protection, the more original quincunx overspeed governor of its performance is good.Super low speed anti-falling safety device of the present invention is applicable to multiple use.
Super low speed anti-falling safety device responsiveness of the present invention is stable, rational in infrastructure, deadweight is light, be applicable to low speed and Ultra-Low Speed work, and concrete advantage is as follows:
1, Ultra-Low Speed safety precaution successful, low speed responsiveness is stable.
2, installation dimension is identical with former common safety, is convenient to production and application unit and uses flexibly.
3, brake portion volume is little, lightweight, installation and removal convenient, and the deadweight that has alleviated cage or platform.
4, the Series Design of modularization, has reduced the quantity of part, is convenient to manufacture.
Accompanying drawing explanation
Fig. 1 is the axial cutaway view of a kind of super low speed anti-falling safety device of the present invention, is gear ring and housing one-piece construction form.
Fig. 2 is the A-A cutaway view in Fig. 1.
Fig. 3 is the schematic diagram of the another kind of version of safety profile of the present invention and housing.
Fig. 4 is that C in Fig. 3 is to view.
Fig. 5 is the schematic diagram of the another kind of version of safety spragging gear of the present invention and pinion carrier.
Reference numeral:
1 is back-up ring, and 2 is spragging gear, and 3 is gear ring, 4 is satellite gear, and 5 is planet wheel spindle, and 6 is body skin, 7 is taper brake wheel, and 8 is pressurizing nut, and 9 is resistance change, 10 is disk spring, and 11 is bearing, and 12 is friction lining, 13 for sun wheel shaft is sun gear shaft, and 14 is antifriction-bearing box, and 15 is pinion carrier, 16 is large bearing, and 17 is centrifugal block, and 18 is flat key, 19 is speed regulating spring, 20 is axial back-up ring, and 21 is drag hook, and 22 is centrifugal-block, 23 is screw, 24 is insurance reed, and 25 is set screw, and 26 is margin microswich.
The specific embodiment
Referring to Fig. 1 and Fig. 2, the invention provides a kind of super low speed anti-falling safety device, mainly by parts such as safety body skin 6, spragging gear 2, gear ring 3, large bearing 16, the centrifugal speed control mechanism that comprises centrifugal block 17, centrifugal-block 22 and planetary wheel speed increasing mechanisms, formed, spragging gear 2 is placed in pinion carrier 15, and planetary wheel speed increasing mechanism is set up between safety spragging gear 2 and centrifugal speed control mechanism.What in figure, show is gear ring and housing one-piece construction form.
Planetary wheel speed increasing mechanism is mainly comprised of sun wheel shaft 13, antifriction-bearing box 14, pinion carrier 15, planet wheel spindle 5 and satellite gear 4, sun wheel shaft 13 is placed in the center in body skin 6, sun wheel shaft 13 forms one with sun gear shaft, pinion carrier 15 is bearing on antifriction-bearing box 14 and large bearing 16, in satellite gear 4 and gear ring 3, be connected with a joggle, satellite gear 4 is also connected with sun wheel shaft 13 external toothings.Satellite gear 4 drives sun wheel shaft 13 speedups to rotate by the interior engagement with gear ring 3 and with the external toothing of sun wheel shaft 13.
Spragging gear 2 is connected with pinion carrier 15 by spline and drives it to do equidirectional rotation, spragging gear 2 and pinion carrier 15 use back-up ring 1 axial restraints, and pinion carrier 15 drives satellite gear 4 to rotate by planet wheel spindle 5, and satellite gear 4 drives sun wheel shaft 13 speedups to rotate.
At body skin 6 inner side corresponding with taper brake wheel 7 lateral surfaces, gummed is provided with friction lining 12.
The end face of taper brake wheel 7 is with screw rod.Centrifugal block 17 and centrifugal-block 22 are arranged on the inner side of taper brake wheel 7.On the end face screw rod of taper brake wheel 7, be equipped with and the pressurizing nut 8 that hinders change 9 and be connected, between pressurizing nut 8 and body skin 6, disk spring 10 be installed, the predetermincd tension by disk spring 10 makes taper brake wheel 7 contact with friction lining 12.Resistance change 9 is provided with long handle, and the long handle of resistance change 9 partly stops pressurizing nut 8 to rotate by safety housing.
Referring to Fig. 3, in figure, shown the another kind of version of safety profile of the present invention and housing, wherein gear ring embeds in safety housing, and sun wheel shaft is unsteady version.
Referring to Fig. 4, the long handle of resistance change 9 is partly provided with a set screw 25, and the planar section of body skin 6 small ends is equipped with margin microswich 26, when resistance change 9 is moved, can disconnect limit switch 26.
Referring to Fig. 5, in figure, shown the another kind of version of safety spragging gear of the present invention and pinion carrier, wherein spragging gear and sun gear shaft are integrated, and pinion carrier is connected with sun gear shaft by spline or flat key.
Actual installation use and the working process of super low speed anti-falling safety device of the present invention are as follows:
(1), in building hoist operational process, spragging gear 2 meshes with the tooth bar on building hoist guide rail, and rotates with elevator craning cage operation.Spragging gear 2 is connected and drives it to do equidirectional rotation with the pinion carrier 15 being bearing on antifriction-bearing box 14 and large bearing 16 by spline.Spragging gear 2 and pinion carrier 15 use back-up ring 1 axial restraints.Pinion carrier 15 drives satellite gear 4 to rotate by planet wheel spindle 5, and satellite gear 4 drives sun wheel shaft 13 speedups to rotate by the interior engagement with gear ring 3 and with the external toothing of sun wheel shaft 13.Centrifugal block 17 is arranged on the sun gear shaft being integrated with sun wheel shaft 13 by flat key 18 and axial back-up ring 20, and one end that centrifugal speed control mechanism is housed of sun gear shaft is bearing in taper brake wheel 7 by bearing 11 and it circumferentially can freely rotate.Centrifugal-block 22 is supported on centrifugal block 17 and is together rotated with sun wheel shaft 13 by drag hook 21.Between drag hook 21 and centrifugal block 17, speed regulating spring 19 is installed, for regulating the size of the power being thrown out of.Centrifugal block 17 and centrifugal-block 22 are arranged on end face with screw rod and are bearing in the inner side of the taper brake wheel 7 on the friction lining 12 with body skin 6 gummeds.On the end face screw rod of taper brake wheel 7, be equipped with bolt and the pressurizing nut 8 that is connected of resistance change 9, between pressurizing nut 8 and body skin 6, disk spring 10 be installed, the predetermincd tension taper brake wheel 7 by disk spring 10 contacts with friction lining 12.The long handle of resistance change 9 partly stops pressurizing nut 8 to rotate by safety housing.Long handle in resistance change 9 partly has a set screw 25, at the planar section of body skin small end, margin microswich 26 is installed, and when resistance change 9 is moved, can disconnect limit switch 26.
(2) when the downstream rate of building hoist surpasses the responsiveness of safety demarcation, the outpace pulling force of regulating spring 19 of the centnifugal force that centrifugal-block 22 rotation produces, centrifugal-block 22 is thrown out of, the front end of centrifugal-block 22 outwards opens in the double wedge that snaps in taper brake wheel 7 medial surfaces, drive taper brake wheel 7 rotation together, the screw 23 that is simultaneously arranged on insurance reed 24 ends withstands centrifugal-block, prevents that it from returning voluntarily after Speed Reduction.Because pressurizing nut 8 is connected with resistance change 9 use bolts, can not rotate and can only move axially, in braking procedure, the movement of pressurizing nut 8 has further increased the thrust of disk spring 10, make taper brake wheel 7 and the positive pressure of friction lining 12 continue further to increase, realize the gradual braking that brake torque increases along with the increase of Brake displacement.The set screw 25 being arranged in resistance change 9 quits work driver train along with resistance change 9 longitudinal travels touch micro limit switch 26 when braking, completes thus whole braking procedure.
In the specific implementation, the version of safety can have multiple.What Fig. 1 provided is gear ring and housing one-piece construction.What Fig. 4 provided is that gear ring embeds in safety housing, and the unsteady version of sun wheel shaft.What Fig. 1 provided is the version that spragging gear is connected with pinion carrier by spline.Shown in Fig. 5 is that spragging gear and sun gear shaft are integrated, the version that pinion carrier is connected with sun gear shaft by spline or flat key.
In sum, the present invention is a kind of gradual anti-falling safety device for construction lifting platform or low speed elevation machine, it is to set up planetary wheel speed increasing mechanism between common safety spragging gear and centrifugal speed control mechanism, and the low speed rotation of spragging gear is converted into High Rotation Speed.When the running velocity of construction lifting platform or low speed elevation machine reaches the protection speed of safety device, safety action, lock torque is along with the increase of Brake displacement increases to reach the object of gradual braking gradually.
Super low speed anti-falling safety device of the present invention is applicable to multiple use, and its responsiveness is stable, rational in infrastructure, conducts oneself with dignity lighter, is applicable to low speed and Ultra-Low Speed work, and installation and removal are convenient.
Certainly, those skilled in the art in the art will be appreciated that, above-described embodiment is only for the present invention is described, and not as limitation of the invention, as long as within the scope of connotation of the present invention, the variation of above-described embodiment, modification etc. all will be dropped in the scope of the claims in the present invention.
Claims (1)
1. a super low speed anti-falling safety device, comprise safety body skin, the spragging gear that enclosure interior is settled outside, gear ring, large bearing, centrifugal block and centrifugal-block, is characterized in that: also comprise planetary wheel speed increasing mechanism, set up between safety spragging gear and centrifugal speed control mechanism;
Described planetary wheel speed increasing mechanism comprises sun wheel shaft, antifriction-bearing box, pinion carrier, planet wheel spindle and satellite gear, sun wheel shaft is placed in the center in body skin, sun wheel shaft and sun gear shaft form one, pinion carrier is bearing on antifriction-bearing box and large bearing, in satellite gear and gear ring, be connected with a joggle, satellite gear is also connected with sun wheel shaft external toothing;
Described spragging gear is connected with pinion carrier and is driven it to do equidirectional rotation by spline or flat key, spragging gear and pinion carrier back-up ring axial restraint, and pinion carrier drives satellite gear to rotate by planet wheel spindle, and satellite gear drives sun wheel shaft speedup to rotate;
Described centrifugal block is arranged on sun gear shaft by flat key and axial back-up ring, sun gear shaft is one end that sun wheel shaft is arranged on centrifugal speed control mechanism, by bearing, be bearing in taper brake wheel and it is circumferentially free to rotate, centrifugal-block is bearing on centrifugal block and with sun wheel shaft and is together rotated by drag hook, between drag hook and centrifugal block, speed regulating spring is installed; Between described centrifugal-block and centrifugal block, by spring, be connected with drag hook;
The described body skin inner side gummed corresponding with taper brake wheel lateral surface is provided with friction lining;
The end face of described taper brake wheel is with screw rod, centrifugal block and centrifugal-block are arranged on the inner side of taper brake wheel, on the end face screw rod of taper brake wheel, be equipped with by the connected pressurizing nut of resistance change, between pressurizing nut and body skin, disk spring is housed, predetermincd tension by disk spring makes taper brake wheel contact with friction lining, and resistance change is provided with long handle;
In building hoist operational process, spragging gear (2) meshes with the tooth bar on building hoist guide rail, and rotates with elevator craning cage operation; Spragging gear (2) is connected and drives it to do equidirectional rotation with the pinion carrier (15) being bearing on antifriction-bearing box (14) and large bearing (16) by spline; Spragging gear (2) and back-up ring (1) axial restraint for pinion carrier (15); Pinion carrier (15) drives satellite gear (4) to rotate by planet wheel spindle (5), and satellite gear (4) drives sun wheel shaft (13) speedup to rotate by the interior engagement with gear ring (3) and with the external toothing of sun wheel shaft (13); Centrifugal block (17) is arranged on the sun gear shaft being integrated with sun wheel shaft (13) by flat key (18) and axial back-up ring (20), and one end that centrifugal speed control mechanism is housed of sun gear shaft is bearing in by bearing (11) that taper brake wheel (7) is interior and it circumferentially can freely rotate; Centrifugal-block (22) is supported in centrifugal block (17) by drag hook (21) and above with sun wheel shaft (13), together rotates; Between drag hook (21) and centrifugal block (17), speed regulating spring (19) is installed, for regulating the size of the power being thrown out of; Centrifugal block (17) and centrifugal-block (22) are arranged on end face with screw rod and are bearing in the inner side of the taper brake wheel (7) on the friction lining (12) with body skin (6) gummed; The pressurizing nut (8) being connected with resistance change (9) with bolt is housed on the end face screw rod of taper brake wheel (7), between pressurizing nut (8) and body skin (6), disk spring (10) is installed, the predetermincd tension taper brake wheel (7) by disk spring (10) contacts with friction lining (12); The long handle of resistance change (9) partly stops pressurizing nut (8) to rotate by safety housing; Long handle in resistance change (9) partly has a set screw (25), at the planar section of body skin small end, margin microswich (26) is installed, and when resistance change (9) is mobile, disconnects limit switch (26).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010591906.7A CN102303801B (en) | 2010-12-16 | 2010-12-16 | Super low speed anti-falling safety device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010591906.7A CN102303801B (en) | 2010-12-16 | 2010-12-16 | Super low speed anti-falling safety device |
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| CN102303801A CN102303801A (en) | 2012-01-04 |
| CN102303801B true CN102303801B (en) | 2014-04-30 |
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| CN201010591906.7A Active CN102303801B (en) | 2010-12-16 | 2010-12-16 | Super low speed anti-falling safety device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11691848B2 (en) | 2017-09-07 | 2023-07-04 | Alimak Group Sweden Ab | Safely brake for an elevator |
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| CN112723090B (en) * | 2020-12-03 | 2022-03-15 | 安徽中旭机械科技有限公司 | Auxiliary device convenient to change construction elevator and prevent weighing down breaker |
| CN113443532B (en) * | 2021-07-29 | 2022-10-25 | 阿克陶县诚鑫路桥有限责任公司 | Anti-falling safety device of construction elevator |
| CN115626544B (en) * | 2022-12-01 | 2023-04-18 | 江苏驰昇建筑工程设备有限公司 | Prevent weighing down guide rail with additional strengthening |
| CN118220945A (en) * | 2024-01-05 | 2024-06-21 | 上海市建筑科学研究院有限公司 | Overspeed protection safety device and construction hoist |
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| US6116380A (en) * | 1998-12-08 | 2000-09-12 | Wang; Chiu Nan | Elevator provided with emergency escape |
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| CN101618796A (en) * | 2009-07-21 | 2010-01-06 | 太原理工大学 | Frequency conversion type automatic tension device of extension band type conveyor |
| CN201400496Y (en) * | 2009-03-24 | 2010-02-10 | 中国建筑科学研究院建筑机械化研究分院 | Low Excitation Velocity Safety Device |
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| CN2079613U (en) * | 1990-02-05 | 1991-06-26 | 中国建筑科学研究院建筑机械化研究所 | Safety device of pinion-and-rack type lifter for construction lift |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US11691848B2 (en) | 2017-09-07 | 2023-07-04 | Alimak Group Sweden Ab | Safely brake for an elevator |
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| CN102303801A (en) | 2012-01-04 |
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Address after: 200032 Shanghai city Xuhui District Wanping Road No. 75 Patentee after: Shanghai Research Institute of Building Sciences (Group) Co., Ltd. Patentee after: Science and Technology Development Company of SRIBS Address before: 200032 Shanghai city Xuhui District Wanping Road No. 75 Patentee before: Shanghai Research Institute of Building Sciences (Group) Co., Ltd. Patentee before: Sci-Tech Development Corp., Shanghai City Inst. of Building Science |
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