CN204980709U - Fall -preventing elevator - Google Patents
Fall -preventing elevator Download PDFInfo
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- CN204980709U CN204980709U CN201520563325.0U CN201520563325U CN204980709U CN 204980709 U CN204980709 U CN 204980709U CN 201520563325 U CN201520563325 U CN 201520563325U CN 204980709 U CN204980709 U CN 204980709U
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- force
- arm
- ratchet
- guide rail
- end device
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Abstract
The utility model provides a fall -preventing elevator, includes, the car, and trapped orbit and fag end device, its characterized in that: one prevents falling system configuration on this car, a ratchet guide rail sets up on this trapped orbit to length direction along this trapped orbit extends, and one side of this installation space of this ratchet guide rail orientation has the ratchet that a plurality of intervals set up, and these a little ratchets extend along the side top of this ratchet guide rail, a fag end device sets up in the top of this car, when this fag end device production effort is on this prevents the system of falling, should prevent the system of falling and this ratchet track contactless, it on this guide bar the time, should prevent falling system's chucking on the orbital ratchet of this ratchet not produce the effort when this fag end device. The utility model discloses other provides a method of preventing that the elevator falls. By this the utility model discloses prevent that the system of falling is simple mechanical structure, need not control the motion between each unit through control signal at the in -process of preventing falling, improved entire system's reliability and stability.
Description
Technical field
The utility model relates to a kind of elevator, particularly a kind of method of fall arrest elevator and anti-used during elevator falling.
Background technology
Along with the develop rapidly of elevator technology, make the building height of skyscraper more and more higher, also because the field of application of elevator like this is also more and more extensive, in our life at ordinary times, play more and more indispensable role.But, the wide and frequency of utilization of the change of elevator fitting limit increase the probability of occurrence that all improve safety misadventure, consequence can cause more serious passenger's injures and deaths and property damage usually.We should not ignore it.Therefore, huge research and development strength and substantial contribution are dropped in each large elevator originating firm commercial city on guarantee elevator use safety, are ensured the safe operation of elevator by modes such as machinery and electrical controls.Chinese patent CN201410034390 discloses so a kind of elevator fall protection equipment.This patent is provided with the monitoring sensor of normal acceleration at the top of lift car, controller also has accumulator plant.Then the sidewall of car is provided with fixed link and telescope motor.Also be provided with trapped orbit in the both sides of elevator, track be also evenly distributed with the fixed orifice that number is even number.Controller mentioned above adopts Single-chip Controlling, is connected respectively with acceleration pick-up, storage battery and telescope motor.One end of fixed link is connected with telescope motor, and the other end is then corresponding with the fixed orifice arranged in orbit.The operation of whole device is, when acceleration pick-up detects the rated value that the acceleration/accel of elevator vertical direction exceedes designed by elevator, the controller of micro controller system is adopted to send electric signal to telescope motor, triggering telescope motor works, fixed link is pushed to track, be inserted in designed fixed orifice, elevator is stuck in elevator.The elevator fall protection equipment with said structure due to the control signal of links be electric signal; therefore the stability of whole system is not high; easily be subject to the impact of other factors; once control signal is disturbed by other electric signal; cause telescope motor cisco unity malfunction; fixed link can not be pushed to track, then whole elevator fall protection equipment can be caused to lose efficacy, and consequence is hardly imaginable.
For the problem points at above-mentioned conventional construction place, how to develop a kind of reliability higher, more stable fall arrest elevator, for relevant dealer makes great efforts target and the direction of researching and developing breakthrough.
Utility model content
In order to overcome above-mentioned the deficiencies in the prior art, the utility model improves a kind of fall arrest elevator, comprises, car, and trapped orbit and fag end device, is characterized in that: the top of this car defines an installing space; One drop preventer is arranged on this car, and is arranged in this installing space; One ratchet guide rail is arranged on this trapped orbit, and extends along the length direction of this trapped orbit, and this ratchet guide rail has multiple spaced ratchet towards the side of this installing space, and those ratchets extend above the side of this ratchet guide rail; One fag end device is arranged at the top of this car, and when this fag end device generation application force is on this drop preventer, this drop preventer does not contact with this ratchet track; When this fag end device do not produce application force on this drop preventer time, this drop preventer is clamped on the ratchet of this ratchet track.
In a preferred embodiment, this installing space comprises a upper beam portion and a underbeam portion; This drop preventer comprises further, and a supporting seat is arranged in this underbeam portion, and is positioned in the middle part of this installing space, has been disposed radially a guided way in this supporting seat; Arrange an arm of force, it is sequentially provided with one first section along length bearing of trend, a linkage section and a latter end, this first section offers the arm of force guide rail of a horizontally set relative to this guided way; Plug a pilot bar in this guided way and this arm of force guide rail; One hinged seat is set in this underbeam portion, and hinged with the linkage section of this arm of force; Wherein, when this fag end device generation application force is on this pilot bar, this pilot bar drives first section of this arm of force top being positioned at this guided way; The latter end of this arm of force does not contact with this ratchet track; When this fag end device do not produce application force on this pilot bar time, this pilot bar drives first section of this arm of force bottom moving to this guided way; The linkage section of this arm of force rotates relative to this hinged seat, and the latter end of this arm of force is clamped on the ratchet of this ratchet track.
In a preferred embodiment, the midline position of this guided way and the midline position direction of this car consistent.
In a preferred embodiment, this arm of force is bent rod, has an angle α between first section of this arm of force and the latter end of this arm of force, and the angular range of this angle α is 0 ° of < α < 180 °.
In a preferred embodiment, sleeve is provided with between the arm of force guide rail of first section of this arm of force and pilot bar; One end cap, is fixedly connected on this pilot bar evagination in one end of this arm of force guide rail.
In a preferred embodiment, the latter end of this arm of force has an acute angle tip, and this acute angle is most advanced and sophisticated to be extended top left relative to this acute angle tip away from the side in the middle part of this installing space.
In a preferred embodiment, comprise an extension spring further and be arranged between this hinged seat and this supporting seat, this extension spring one end is connected to this underbeam portion, and the other end is connected to this arm of force.
In a preferred embodiment, this upper beam portion comprises two upper beams, and this fag end device is arranged at the top in this upper beam portion; One little rope hitch plate is connected to the afterbody of this fag end device, and between two upper beams; One stay bearing plate, is arranged between this little rope hitch plate and this pilot bar, and this stay bearing plate is near this little rope hitch plate side for having a bearing surface, and this bearing surface is in order to connect this little rope hitch plate; One end of one strut bar to be positioned in the middle part of this stay bearing plate and to extend along the direction away from this little rope hitch plate, and the other end of this strut bar has a connecting bore, and this pilot bar is arranged in this connecting bore.
Owing to have employed above technical scheme, the utility model at least has following Advantageous Effects:
1, because arm of force unit design is bent rod structure, there is certain angle, when used during elevator falling, make the arm of force softened by the turning effort of the arm of force, elevator can be stuck on trapped orbit on ratchet guide rail, thus play the effect preventing used during elevator falling.And when elevator normal operation, the arm of force can not produce with ratchet guide rail again interferes, thus ensure the normal smooth running of elevator.
2, ratchet guide rail structure is adopted, by arranging the ratchet that extends above the side of this ratchet guide rail in order to block the arm of force on ratchet guide rail, because ratchet is outwardly, the mode of fixed orifice is set on trapped orbit relative to prior art, better can block the arm of force, effectively stop effect is played to the elevator fallen.It also avoid fixed link and fixed orifice in prior art simultaneously and also need the problem of exactitude position, improve stability and the safety of fall arrest elevator entirety.
3, between hinged seat and supporting seat, set up extension spring, and extension spring one end is connected to underbeam portion, the other end is connected to the arm of force.When elevator normal operation time, extension spring is stretched, and the whole arm of force is brought up, and the arm of force can not produce with ratchet guide rail interferes, the normal smooth running of elevator.When unexpected situation occurs, such as the fracture of steel rope generation unknown cause ground, loses pulling force instantaneously, and extension spring is shunk, and the arm of force struts rapidly and snaps on ratchet guide rail.Therefore mainly playing in drop preventer of extension spring improves the speed of response of whole system and the effect of stability.
4, whole drop preventer is simple physical construction, and in fall arrest process, do not need the motion controlling between unit by control signal, avoid easily disturbed due to control signal in prior art and problem that is that cause drop preventer to lose efficacy, improve the reliability and stability of whole system.
Accompanying drawing explanation
Integral structure schematic diagram when Fig. 1 is the normal work of the fall arrest elevator of the utility model;
Fig. 2 is the structural representation of the supporting seat of the fall arrest elevator of the utility model;
Fig. 3 is the structural representation of the arm of force of the fall arrest elevator of the utility model;
Fig. 4 is the structural representation of the guide rail of the fall arrest elevator of the utility model;
Integral structure schematic diagram when Fig. 5 is falling of the fall arrest elevator of the utility model;
Fig. 6 is the structural representation of the stay bearing plate of the fall arrest elevator of the utility model;
Fig. 7 is the method flow diagram of the used during elevator falling of the utility model.
Detailed description of the invention
In details hereafter describes, element numbers can be indicated in the diagram of enclosing the some become wherein, and represents with the particular example describing mode of this embodiment practicable.This kind of embodiment can illustrate that enough details are able to tool to implement in order to do making the general skill personage in this field.The person of readding must recognize in the utility model the embodiment that also can utilize other or make under the prerequisite not departing from described embodiment structural, logicality and electrically on change.Therefore, details hereafter describes and will not limit for being considered to be one, otherwise wherein comprised embodiment will be defined by right.
As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4, Fig. 5, fall arrest elevator 1 comprises: the trapped orbit 10 being arranged on elevator (not shown) both sides, be located in order to carry the car 20 of personnel and goods and materials and the fag end device 40 in order to provide application force on car 20 in elevator, wherein fag end device 40 is arranged on the top of car 20.The top of car 20 defines installing space S, and installing space S comprises upper beam portion 21 and underbeam portion 22.Wherein, car 20 can adopt opposite side shape car of the prior art or diagonal form car, and the utility model is not as limit.
Drop preventer 30 to be arranged on this car 10 and to be positioned at the installing space S at its top, and it mainly comprises: to be arranged in underbeam portion 22 and the supporting seat 31 be positioned in the middle part of installing space S.Guided way 311 has been disposed radially in supporting seat 31.The midline position of guided way 311 is consistent with the center line direction of this car 20.The arm of force 32 entirety is for being rendered as bent rod, and it is sequentially provided with first section 321 along length bearing of trend, linkage section 322 and latter end 323.Wherein, first section 321 offers the arm of force guide rail 3211 of horizontally set relative to guided way 311.Pilot bar 33 is inserted in guided way 311 with arm of force guide rail 3211.Pilot bar 33 slides along guided way 311, thus guide whole drop preventer 30 guide rail 311 restriction directions move up and down.Hinged seat 34 is arranged in this underbeam portion 22, and hinged with the hinge hole 3221 on the linkage section 322 of the arm of force 32.It should be noted that, although in the present embodiment, drop preventer 30 comprises the arm of force 32 being symmetrical set two, but the utility model is not as limit, in other embodiments, drop preventer 30 also can only include an arm of force 32(as, only retain the arm of force 32 Fig. 1 being positioned at left side, or only retain the arm of force 32 Fig. 1 being positioned at right side), so also can reach the effect preventing used during elevator falling.
In a preferred embodiment, for reducing the friction force between arm of force guide rail 3211 and guide rod 33, sleeve (not shown) can be set up between the arm of force guide rail 3211 of first section 321 of this arm of force 32 and pilot bar 33, thus change cliding friction into friction of rolling, improve service life and the traveling comfort of drop preventer 30.Meanwhile, for reducing rocking and the axial motion of restricted guidance bar 33 of the arm of force 32, an end cap (not shown) can also be fixedly connected with in this pilot bar 33 evagination in one end of this arm of force guide rail 3211, thus improve the stability of whole drop preventer 30 work.
Ratchet guide rail 50 is arranged on trapped orbit 10, and extends along the length direction of trapped orbit 10, and ratchet guide rail 50 has multiple spaced ratchet 51 towards the side of installing space S, and those ratchets 51 extend above the side of ratchet guide rail 50.Because ratchet 51 is outwardly, the mode of fixed orifice is set relative to prior art on trapped orbit, can better blocks the arm of force 32, effectively stop effect is played to the elevator fallen.Wherein ratchet guide rail 50 is formed by casting, which is provided with the porose (not shown) of processing, and fixed by the fastening means such as bolt and trapped orbit 10.It should be noted that, although only show the situation that ratchet guide rail 50 is arranged on the right side of trapped orbit 10 in Fig. 1 and Fig. 5, but be understandable that, it is corresponding that the quantity of ratchet guide rail 50 is actually with the quantity of the arm of force 32, in other words, a ratchet guide rail 50 be arranged on the left of trapped orbit 10 is also comprised in Fig. 1 and Fig. 5, and symmetrical between two ratchet guide rails 50.In addition, in a preferred embodiment, the magnitude setting of the arm of force 32 also can be one, and now, the magnitude setting of ratchet guide rail 50 also can be one, and the position arranged is corresponding with the arm of force 32, as being all positioned at the right side of car 20.
As shown in Fig. 1, Fig. 2, when fag end device 40 produce application force on pilot bar 33 time, pilot bar 33 drives first section 321 of the arm of force 32 top 3111 being positioned at guided way 311.The latter end 323 of the arm of force 32 does not contact with ratchet track 50, avoids the arm of force 32 and ratchet guide rail 50 to produce and interferes, thus ensure the normal smooth running of elevator.
As shown in Fig. 2, Fig. 5, when this fag end device 40 do not produce application force on this pilot bar 33 time, this pilot bar 33 drives first section 321 of this arm of force 32 bottom 3112 moving to this guided way 311.First section 321 of this arm of force 32 rotates relative to this supporting seat 31, and the arm of force 32 entirety struts and close to ratchet track 50, and its latter end 323 is clamped on the ratchet 51 of this ratchet track 50.
As shown in Fig. 1, Fig. 3 and Fig. 5, have an angle α between first section 321 of this arm of force 32 and the latter end 323 of this arm of force 32, the angular range of this angle α is 0 ° of < α < 180 °, and preferably, angle α is 170 °.The object of design angle is the angle variation range increasing the arm of force 32, when used during elevator falling, first section 321 of this arm of force 32 rotates relative to this supporting seat 31 thus drives the latter end 323 of the arm of force 32 to obtain larger angle change, makes the arm of force 32 entirety strut thus extend to the position of the ratchet 51 outside car 20.And when elevator normally runs, the arm of force 32 overall shrinkage thus can not contact with ratchet track 50, the normal operation of the elevator of interference.The latter end 323 of the arm of force 32 has an acute angle tip, and this acute angle is most advanced and sophisticated to be extended top left relative to this acute angle tip away from the side in the middle part of this installing space S.Wherein acute angle tip angle design select be need advised, angle is too little or too large, all can out of reach expection object.Angle is too little, and the change distance that the whole arm of force 32 struts is large, and the length be stuck on ratchet 51 is just long, and the area of contact like this will be relatively large, but latter end 323 can be more crisp, and be in operation the risk that may have and break.Angle is too large, although the mechanical property of wedge angle is better, due to dangerous situation occurs time, the area that acute angle tip contact with ratchet 51 is less, and the arm of force 32 card may be made not live ratchet 51, and such words does not have effect completely yet.So will in the assembling of reality, the angle general control at acute angle tip between 15 ° to 60 °, specifically depending on different utilization demands.
As shown in Figure 1, Figure 4 and Figure 5, the spacing distance that ratchet 51 distributes also is need to consider, interval can not be too large, can not be too little.Interval is too large, can not play the effect of stop elevator at short notice, and the impact load that ratchet 51 bears simultaneously also can be very large.Interval is too little, the arm of force 32 can not be made to be stuck on ratchet 51 completely, equally also do not have stop effect.So in practical set, the distance general control between ratchet 51 and ratchet between 100mm to 200mm, specifically depending on different utilization demands.
As shown in Figure 1 and Figure 5, comprise an extension spring 35 further and be arranged between this hinged seat 34 and this supporting seat 31, this extension spring 34 one end is connected to this underbeam portion 22, and the other end is connected on the connecting portion 35 on this arm of force 32.By this, the speed of response and stability that can improve whole drop preventer 30 are set by extension spring 35, are specially, when elevator normal operation time, extension spring 35 is stretched, and the whole arm of force 32 can be brought up, the arm of force 32 can not be produced with ratchet guide rail 50 interfere, the normal smooth running of elevator.When unexpected situation occurs, such as fag end device 40 ruptures while unknown cause occurs, and loses pulling force instantaneously, and extension spring 35 is shunk, the arm of force 32 is promptly strutted, latter end 323 is snapped on the ratchet 51 of ratchet guide rail 50, and at this moment pilot bar 33 also runs on the bottom 3112 of guided way 311, adds the pulling force of extension spring 35, the arm of force 32 is fixed, make it not continue to strut, prevent it from coming off from ratchet 51, thus make drop preventer 30 ineffective.
As shown in Fig. 1, Fig. 5 and Fig. 6, this upper beam portion 21 comprises two upper beam (not shown), and this fag end device 40 is arranged at the top in this upper beam portion 21.One little rope hitch plate 41 is connected to the afterbody of this fag end device 40, and between two upper beams.The layout in the hole on little rope hitch plate 41 is consistent with the layout of fag end combination 40, but its area is less than fag end combination 40 thus it can be moved up and down backlash freedom between two upper beams, so that promptly triggering drop preventer 30.One stay bearing plate 42, is arranged between this little rope hitch plate 41 and this pilot bar 33, and this stay bearing plate 42 is near this little rope hitch plate 41 side for having a bearing surface 421, and this bearing surface 421 is in order to connect this little rope hitch plate 41.One end of one strut bar 422 to be positioned in the middle part of this stay bearing plate 42 and to extend along the direction away from this little rope hitch plate 41, and the other end of this strut bar 422 has a connecting bore 423, and this pilot bar 33 is arranged in this connecting bore 423.In a preferred embodiment, between pilot bar and stay bearing plate 42, counterweight (not shown) is also housed, weight is approximately five kilograms to 20 kilograms, and the effect of counterweight is the speed of response in order to accelerate whole dress falling proof device 30, thus improves its stability.
As shown in Figure 7, the method for the fall arrest used during elevator falling of the utility model comprises the following steps, and is specially: S1, provides a car 20, defines an installing space S in the top of this car 20.S2, arranges a drop preventer 30 on this car 20, and is arranged in this installing space S.S3, one ratchet guide rail 50 is set on trapped orbit 10, and extend along the length direction of this trapped orbit 10, this ratchet guide rail 50 has multiple spaced ratchet 51 towards the side of this installing space S, and those ratchets 51 extend above the side of this ratchet guide rail 50.S4, arranges a fag end device 40 in the top of this car 20.S5, when this fag end device 40 produce application force on this drop preventer 30 time, this drop preventer 30 does not contact with this ratchet track 50.S6, when this fag end device 40 do not produce application force on this drop preventer 30 time, this drop preventer 30 is clamped on the ratchet 51 of this ratchet track 50.
This installing space S comprises upper beam portion 21 and a underbeam portion 22; Step S2 comprises further, S21, arranges a supporting seat 31 in this underbeam portion 22, and is positioned in the middle part of this installing space S, has been disposed radially a guided way 311 in this supporting seat 31.S22, arrange an arm of force 32, it is sequentially provided with one first section 321 along length bearing of trend, and linkage section 322 and a latter end 323, this first section 321 offers the arm of force guide rail 321 of a horizontally set relative to this guided way 311.S23, plugs a pilot bar 33 in this guided way 311 with this arm of force guide rail 3211.S24, arranges a hinged seat 34 in this underbeam portion 22, and hinged with the linkage section 322 of this arm of force 32; S25, when this fag end device 40 produce application force on this pilot bar 33 time, this pilot bar 33 drives first section 321 of this arm of force 32 top 3111 being positioned at this guided way 311; The latter end 323 of this arm of force 32 does not contact with this ratchet track 50.S26, when this fag end device 40 do not produce application force on this pilot bar 33 time, this pilot bar 33 drives first section 321 of this arm of force 32 bottom 3112 moving to this guided way 311; First section 321 of this this arm of force 32 rotates relative to this supporting seat 31, and the latter end 323 of this arm of force 32 is clamped on the ratchet 51 of this ratchet track 50.
To sum up, the whole drop preventer of the fall arrest elevator of the utility model is simple physical construction, and in fall arrest process, do not need the motion controlling between unit by control signal, avoid easily disturbed due to control signal in prior art and problem that is that cause drop preventer to lose efficacy, improve the reliability and stability of whole system.
The foregoing is only embodiment of the present utility model, it is also not used to limit scope of patent protection of the present utility model.Anyly have the knack of alike those skilled in the art, not departing from spirit of the present utility model and scope, the equivalence of the change done and retouching is replaced, and is still in scope of patent protection of the present utility model.
Claims (8)
1. a fall arrest elevator, comprises, car, and trapped orbit and fag end device, is characterized in that:
The top of this car defines an installing space;
One drop preventer is arranged on this car, and is arranged in this installing space;
One ratchet guide rail is arranged on this trapped orbit, and extends along the length direction of this trapped orbit, and this ratchet guide rail has multiple spaced ratchet towards the side of this installing space, and those ratchets extend above the side of this ratchet guide rail;
One fag end device is arranged at the top of this car, and when this fag end device generation application force is on this drop preventer, this drop preventer does not contact with this ratchet track;
When this fag end device do not produce application force on this drop preventer time, this drop preventer is clamped on the ratchet of this ratchet track.
2. fall arrest elevator according to claim 1, is characterized in that: this installing space comprises a upper beam portion and a underbeam portion; This drop preventer comprises further,
One supporting seat is arranged in this underbeam portion, and is positioned in the middle part of this installing space, has been disposed radially a guided way in this supporting seat;
Arrange an arm of force, it is sequentially provided with one first section along length bearing of trend, a linkage section and a latter end, this first section offers the arm of force guide rail of a horizontally set relative to this guided way;
One pilot bar is inserted in this guided way and this arm of force guide rail;
One hinged seat is set in this underbeam portion, and hinged with the linkage section of this arm of force; Wherein,
When this fag end device generation application force is on this pilot bar, this pilot bar drives first section of this arm of force top being positioned at this guided way; The latter end of this arm of force does not contact with this ratchet track;
When this fag end device do not produce application force on this pilot bar time, this pilot bar drives first section of this arm of force bottom moving to this guided way; First section of this arm of force rotates relative to this supporting seat, and the latter end of this arm of force is clamped on the ratchet of this ratchet track.
3. the fall arrest elevator according to any one in claim 2, is characterized in that: the midline position of this guided way is consistent with the midline position direction of this car.
4. fall arrest elevator according to claim 2, it is characterized in that: this arm of force is bent rod, have an angle α between first section of this arm of force and the latter end of this arm of force, the angular range of this angle α is 0 ° of < α < 180 °.
5. fall arrest elevator according to claim 2, is characterized in that: be provided with sleeve between the arm of force guide rail of first section of this arm of force and pilot bar;
One end cap, is fixedly connected on this pilot bar evagination in one end of this arm of force guide rail.
6. fall arrest elevator according to claim 2, is characterized in that: the latter end of this arm of force has an acute angle tip, and this acute angle is most advanced and sophisticated to be extended top left relative to this acute angle tip away from the side in the middle part of this installing space.
7. the fall arrest elevator according to claim 2 or 4, is characterized in that: comprise an extension spring further and be arranged between this hinged seat and this supporting seat, this extension spring one end is connected to this underbeam portion, and the other end is connected to this arm of force.
8. fall arrest elevator according to claim 2, is characterized in that: this upper beam portion comprises two upper beams, and this fag end device is arranged at the top in this upper beam portion;
One little rope hitch plate is connected to the afterbody of this fag end device, and between two upper beams;
One stay bearing plate, is arranged between this little rope hitch plate and this pilot bar, and this stay bearing plate is near this little rope hitch plate side for having a bearing surface, and this bearing surface is in order to connect this little rope hitch plate;
One end of one strut bar to be positioned in the middle part of this stay bearing plate and to extend along the direction away from this little rope hitch plate, and the other end of this strut bar has a connecting bore, and this pilot bar is arranged in this connecting bore.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520563325.0U CN204980709U (en) | 2015-07-30 | 2015-07-30 | Fall -preventing elevator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520563325.0U CN204980709U (en) | 2015-07-30 | 2015-07-30 | Fall -preventing elevator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204980709U true CN204980709U (en) | 2016-01-20 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520563325.0U Withdrawn - After Issue CN204980709U (en) | 2015-07-30 | 2015-07-30 | Fall -preventing elevator |
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| Country | Link |
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| CN (1) | CN204980709U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105129570A (en) * | 2015-07-30 | 2015-12-09 | 厦门理工学院 | Fall protection elevator and method for preventing elevator from falling |
| CN107826930A (en) * | 2017-12-05 | 2018-03-23 | 余廷栋 | A kind of elevator drop preventer |
-
2015
- 2015-07-30 CN CN201520563325.0U patent/CN204980709U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105129570A (en) * | 2015-07-30 | 2015-12-09 | 厦门理工学院 | Fall protection elevator and method for preventing elevator from falling |
| CN107826930A (en) * | 2017-12-05 | 2018-03-23 | 余廷栋 | A kind of elevator drop preventer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160120 Effective date of abandoning: 20170811 |