CN104724570B - Overload protecting device for pneumatic elevator and pneumatic elevator - Google Patents
Overload protecting device for pneumatic elevator and pneumatic elevator Download PDFInfo
- Publication number
- CN104724570B CN104724570B CN201510149557.6A CN201510149557A CN104724570B CN 104724570 B CN104724570 B CN 104724570B CN 201510149557 A CN201510149557 A CN 201510149557A CN 104724570 B CN104724570 B CN 104724570B
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- Prior art keywords
- pneumatic elevator
- plate
- protecting device
- spring
- overload protecting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
- B66B5/14—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions in case of excessive loads
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- Cage And Drive Apparatuses For Elevators (AREA)
Abstract
The invention relates to an overload protecting device for a pneumatic elevator and the pneumatic elevator. The overload protecting device comprises a weighing plate, a deflating plate, a bolt, a nut and a spring. One end of the bolt is fixedly connected with the weighing plate, and sequentially penetrates through the deflating plate and the spring. The other end of the bolt is screwed with the nut in a matched mode. Multiple air leaking holes are formed in the deflating plate. According to the overload protecting device for the pneumatic elevator and the pneumatic elevator, the principle that air pressure difference exists between an enclosed space inside the hatchway and the external atmospheric pressure is utilized, by using the combined effect of the air pressure difference and elasticity of the spring, opening and closing of the overload protecting device are achieved, when the overload protecting device is opened, the enclosed space is communicated with the external atmospheric pressure, and a lift car is prevented from moving under the air pressure difference effect, so that a lifting system of the elevator loses the capability to lift the lift car, and the safety and the reliability are higher.
Description
Technical field
The present invention relates to elevators field, more particularly to a kind of pneumatic elevator overload protecting device and pneumatic elevator.
Background technology
Pneumatic elevator is novel elevator technology of the counterweightless without steel wire rope that a kind of utilization gas pressure difference is lifted.Such as
Shown in Fig. 1 and Fig. 2, it is mainly made up of hoistway 1, guide rail 2, car 3 and vacuum motor 6, and car sealing ring 4 is sealed with top layer
The side wall of ring 5 and hoistway 1 forms confined space, is evacuated using the vacuum motor 6 at the top of hoistway 1, makes in the confined space
Pressure reduce, the bottom of car 3 connected by bottom inflow hole 7 with external atmosphere pressure, can thus utilize vacuum motor 6 pairs
Pressure difference is formed at the car top top of car 3 and car floor bottom, and car 3 is lifted using the effect of the pressure difference；Lower depression of order
Section, by the self gravitation of car 3 decline transport, energy-conserving and environment-protective are carried out.Because safe each time lifting and decline are all to set up
On the basis of within elevator design load-carrying scope, so, detect whether the live load of car 3 overloads during to running each time
Just seem extremely important.The overweight protection device for using at present is typically carried out elevator and is claimed using rubber blanket and microswitch cooperation
Weight, when overload, microswitch action simultaneously feeds back signal to main controller, and then makes main frame quit work and send overload police
Report.Weighing for this mode is that one kind indirectly provides signal, and main frame obtains signal and quits work, be not it is overweight under the conditions of it is main
Machine does not lift the ability of car 3, once abnormal signal, main frame equally has the possibility for lifting car 3, and such lifting belongs to
, there is potential safety hazard in unsafe condition；In addition, using rubber blanket can reduce or fail in cold district its performance.
The content of the invention
The present invention provides a kind of pneumatic elevator overload protecting device and pneumatic elevator, to solve above-mentioned technical problem.
To solve above-mentioned technical problem, the present invention provides a kind of pneumatic elevator overload protecting device, including weighing plate, deflation
Plate, bolt, nut and spring, one end of the bolt is fixedly connected with the weighing plate, and sequentially passes through the deflation plate
And spring, the other end screws with the nut, and the deflation plate is provided with some leakage holes, the position of the leakage hole with it is described
Weighing plate correspondence.
It is preferred that the quantity of the leakage hole is 6.
It is preferred that the leakage hole is distributed on the deflation plate, and symmetrically enclose around the bolt.
It is preferred that the leakage hole is circle.
Present invention also offers a kind of pneumatic elevator, using pneumatic elevator overload protecting device as above, the title
Weight plate is connected near one end of the spring with outside air, and the opposite side of the heavy plate is connected with the confined space in elevator.
It is preferred that the deflation plate is fixedly installed on the top layer sealing ring of the pneumatic elevator.
It is preferred that when car is not overweight, the draught head in atmospheric pressure and the confined space is to produced by weighing plate
Elastic force of the active force less than the spring；When car is overweight, the draught head in atmospheric pressure and the confined space is to weighing plate
Elastic force of the produced active force more than or equal to the spring.
It is preferred that the elastic force of the spring can be adjusted according to the dead weight of the car.
Compared with prior art, a kind of pneumatic elevator overload protecting device and pneumatic elevator that the present invention is provided has as follows
Advantage：
1st, there is the principle of draught head using the confined space and external atmosphere pressure in hoistway in the present invention, realize mechanical type
The elevator hoisting systems that actively cause lose the ability for lifting car, it is to avoid mistake when car overloads is run, and the party
Case is a kind of independent mechanical solution, is independent of electrical equipment, there is very high reliability；
2nd, the principle of this utilization draught head realizes the scheme that elevator overload is protected, and solves conventional rubber blanket and weighs by ring
The shortcoming of border temperature limiting, with the bigger scope of application.
Description of the drawings
Fig. 1 is the structural representation of existing pneumatic elevator；
Fig. 2 is the top view of pneumatic elevator shown in Fig. 1；
Fig. 3 is the structural representation (closed mode) of the pneumatic elevator overload protecting device of an embodiment of the present invention；
Fig. 4 is the structural representation (open mode) of the pneumatic elevator overload protecting device of an embodiment of the present invention；
Fig. 5 for an embodiment of the present invention pneumatic elevator overload protecting device in deflation plate top view；
Fig. 6 is applied to the structural representation in pneumatic elevator for the pneumatic elevator overload protecting device of an embodiment of the present invention
Figure.
In Fig. 1 and 2：1- hoistways, 2- guide rails, 3- cars, 4- car sealing rings, 5- top layer sealing rings, 6- vacuum motors, 7-
Bottom inflow hole；
In Fig. 3-6：8- overweight protection devices, 10- weighing plates, 20- deflation plates, 21- leakage holes, 30- bolts, 40- nuts,
50- springs, 60- top layer sealing rings.
Specific embodiment
For the technical scheme for stating foregoing invention more in detail, being exemplified below specific embodiment proves that technology is imitated
Really；It is emphasized that these embodiments are used to illustrate the present invention and be not limited to limit the scope of the present invention.
A kind of pneumatic elevator overload protecting device 8 that the present invention is provided, as shown in Figure 3 and Figure 4, including weighing plate 10, puts
Gas plate 20, bolt 30, nut 40 and spring 50, one end of the bolt 30 is fixedly connected with the weighing plate 10, and successively
Through the deflation plate 20 and spring 50, the other end screws fixation with the nut 40, and in the present embodiment, the deflation plate 20 is consolidated
It is connected on the top layer sealing ring 60, the deflation plate 20 is provided with some leakage holes 21, the position of the leakage hole 21 and institute
State the correspondence of weighing plate 10.There is the principle of draught head using the confined space in hoistway and external atmosphere pressure in the present invention, by gas
The synergy of body pressure differential and the elastic force of spring 50 realizes the opening of overload protection device 8 and closes, when overload protection device 8 dozens
When opening, confined space is connected with external atmosphere pressure, it is therefore prevented that motion of the car under gas pressure difference effect, makes elevator hoist system
System loses the ability for lifting car, and the present invention is not affected by circuit system and local temperature, and security reliability is higher.
It is preferred that asking emphasis to refer to Fig. 5, the quantity of the leakage hole 21 is 6, in the present embodiment, the leakage hole 21
For circle, the leakage hole 21 is distributed on the deflation plate 20, and is symmetrically enclosed around the bolt 30 so that described
Atmospheric pressure suffered by weighing plate 10 keeps uniform.
Please emphasis refer to Fig. 6, and with reference to Fig. 3 and Fig. 4, present invention also offers a kind of pneumatic elevator, using as described above
Pneumatic elevator overload protecting device 8, the weighing plate 10 connects near one end of the spring 50 with outside air, the title
The opposite side of weight plate 10 is connected with the confined space in elevator.
Specifically, the startup each time of pneumatic elevator, no matter target zone is, on the top or bottom of current layer, to be required for
One car runs up the start-up course of certain distance.
In the startup stage of car, if car is in when allowing in the range of carrying, vacuum motor work is close in hoistway
Close space pressure reduce, pressure reduce to a certain extent when, car thereon low pressure difference in the presence of start to transport upwards
OK, now, the weighing plate 10 of the overload protection device 8 is subject to the active force (gas i.e. in atmospheric pressure and the confined space
Pressure reduction) less than the elastic force of the spring 50, therefore, overload protection device 8 is closed, and car normally runs.
In the startup stage of car, if car overloads, vacuum motor work, the pressure of hoistway confined space subtracts
It is little, when pressure reduces to a certain extent, active force that the weighing plate 10 of the overload protection device 8 is subject to (i.e. atmospheric pressure and institute
State the draught head in confined space) more than or equal to the elastic force of the spring 50, weighing plate 10 is moved downward, overload protection device 8
In open mode, and the pressure difference that now car is subject to also is insufficient to allow car to run up, but overload protection device 8
Deflation plate 20 has begun to gas leakage so that ambient atmosphere is entered in the confined space of hoistway, and the pressure of confined space reduces, so as to
Prevent the motion of car so that elevator hoisting systems lose the ability for lifting car.
After overweight protection act, with the reduction of car weight, overload protection device 8 can automatically be realized resetting
Function (closed mode), ease for use is very high.
It is preferred that the elastic force of the spring 50 can be adjusted according to the dead weight of the car, and in other words, pin
To different elevators, the dead weight of the car of setting is different, now only need to correspondingly change the different spring 50 of elastic force
.
In sum, the present invention is provided a kind of pneumatic elevator overload protecting device and pneumatic elevator, the overload protection dress
Putting 8 includes weighing plate 10, deflation plate 20, bolt 30, nut 40 and spring 50, one end of the bolt 30 and the weighing plate
10 are fixedly connected, and sequentially pass through the deflation plate 20 and spring 50, and the other end is screwed with the nut 40, the deflation plate 20
Some leakage holes 21 are provided with, the position of the leakage hole 21 is corresponding with the weighing plate 10.The present invention is using close in hoistway
Close space and there is the principle of draught head with external atmosphere pressure, realized by the synergy of gas pressure difference and the elastic force of spring 50 super
Carry the opening of protection device 8 and close, when overload protection device 8 is opened, confined space is connected with external atmosphere pressure, it is therefore prevented that
Motion of the car under gas pressure difference effect, makes elevator hoisting systems lose the ability for lifting car, and security reliability is higher.
Obviously, those skilled in the art can carry out the spirit of various changes and modification without deviating from the present invention to invention
And scope.So, if these modifications of the present invention and modification belong to the claims in the present invention and its equivalent technologies scope it
Interior, then the present invention is also intended to including including these changes and modification.
Claims (8)
1. a kind of pneumatic elevator overload protecting device, it is characterised in that including weighing plate, deflation plate, bolt, nut and bullet
Spring, one end of the bolt is fixedly connected with the weighing plate, and sequentially passes through the deflation plate and spring, and the other end is with described
Nut is screwed, and the deflation plate is provided with some leakage holes, and the position of the leakage hole is corresponding with the weighing plate.
2. pneumatic elevator overload protecting device as claimed in claim 1, it is characterised in that the quantity of the leakage hole is 6.
3. pneumatic elevator overload protecting device as claimed in claim 2, it is characterised in that the leakage hole is distributed in described putting
On gas plate, and symmetrically enclose around the bolt.
4. pneumatic elevator overload protecting device as claimed in claim 1, it is characterised in that the leakage hole is circle.
5. a kind of pneumatic elevator, adopts the pneumatic elevator overload protecting device as described in any one in Claims 1-4, its
It is characterised by, the weighing plate is connected near one end of the spring with outside air, the opposite side and elevator of the weighing plate
In confined space connection.
6. pneumatic elevator as claimed in claim 5, it is characterised in that the deflation plate is fixedly installed in the pneumatic elevator
On top layer sealing ring.
7. pneumatic elevator as claimed in claim 5, it is characterised in that when car is not overweight, atmospheric pressure and the confined air
Interior draught head is less than the elastic force of the spring to the active force produced by weighing plate；When car is overweight, atmospheric pressure and institute
State the elastic force that the draught head in confined space is more than or equal to the spring to the active force produced by weighing plate.
8. pneumatic elevator as claimed in claim 7, it is characterised in that the elastic force of the spring can be according to the maximum of the car
Loading capacity is adjusted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510149557.6A CN104724570B (en) | 2015-03-31 | 2015-03-31 | Overload protecting device for pneumatic elevator and pneumatic elevator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510149557.6A CN104724570B (en) | 2015-03-31 | 2015-03-31 | Overload protecting device for pneumatic elevator and pneumatic elevator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104724570A CN104724570A (en) | 2015-06-24 |
| CN104724570B true CN104724570B (en) | 2017-04-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510149557.6A Active CN104724570B (en) | 2015-03-31 | 2015-03-31 | Overload protecting device for pneumatic elevator and pneumatic elevator |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11845633B2 (en) * | 2020-06-02 | 2023-12-19 | Killakathu Ramanathan Babu | Overload valve assembly for a pneumatic vacuum elevator |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1092124A1 (en) * | 1982-12-08 | 1984-05-15 | Войсковая Часть 44526 | Pneumatic hoist |
| CN102642753A (en) * | 2012-04-16 | 2012-08-22 | 如东宏信机械制造有限公司 | Pneumatic elevator |
| CN204162243U (en) * | 2014-09-04 | 2015-02-18 | 杭州佰诚电梯配件有限公司 | A kind of electronics sedan-chair top Weighing type overload protection device |
| CN204162227U (en) * | 2014-09-04 | 2015-02-18 | 杭州佰诚电梯配件有限公司 | A kind of elevator car top wheel construction with overload protection |
| CN204549709U (en) * | 2015-03-31 | 2015-08-12 | 昆山通祐电梯有限公司 | Pneumatic elevator overload protecting device and pneumatic elevator |
-
2015
- 2015-03-31 CN CN201510149557.6A patent/CN104724570B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1092124A1 (en) * | 1982-12-08 | 1984-05-15 | Войсковая Часть 44526 | Pneumatic hoist |
| CN102642753A (en) * | 2012-04-16 | 2012-08-22 | 如东宏信机械制造有限公司 | Pneumatic elevator |
| CN204162243U (en) * | 2014-09-04 | 2015-02-18 | 杭州佰诚电梯配件有限公司 | A kind of electronics sedan-chair top Weighing type overload protection device |
| CN204162227U (en) * | 2014-09-04 | 2015-02-18 | 杭州佰诚电梯配件有限公司 | A kind of elevator car top wheel construction with overload protection |
| CN204549709U (en) * | 2015-03-31 | 2015-08-12 | 昆山通祐电梯有限公司 | Pneumatic elevator overload protecting device and pneumatic elevator |
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| Publication number | Publication date |
|---|---|
| CN104724570A (en) | 2015-06-24 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Ren Weian Inventor after: Cai Gan Inventor after: Zhang Li Inventor after: Wang Yan Inventor after: Xu Jing Inventor before: Ren Weian Inventor before: Cai Gan Inventor before: Zhang Li Inventor before: Wang Yan |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: REN WEIAN CAI GAN ZHANG LI WANG YAN TO: REN WEIAN CAI GAN ZHANG LI WANG YAN XU JING |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 215300 No. 368, Dongrong Road, Bacheng Town, Kunshan City, Suzhou City, Jiangsu Province Patentee after: Tongyou Elevator Co., Ltd Address before: Suzhou City, Kunshan City, Jiangsu province 215313 Caimao Zhou Zhen Lu Yang supporting District Road No. 3 Patentee before: KUNSHAN KOYO ELEVATOR Co.,Ltd. |
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| CP03 | Change of name, title or address |