CN104724570A - Overload protecting device for pneumatic elevator and pneumatic elevator - Google Patents
Overload protecting device for pneumatic elevator and pneumatic elevator Download PDFInfo
- Publication number
- CN104724570A CN104724570A CN201510149557.6A CN201510149557A CN104724570A CN 104724570 A CN104724570 A CN 104724570A CN 201510149557 A CN201510149557 A CN 201510149557A CN 104724570 A CN104724570 A CN 104724570A
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- China
- Prior art keywords
- pneumatic elevator
- protecting device
- plate
- overload protecting
- spring
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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, particularly relate to a kind of pneumatic elevator overload protecting device and pneumatic elevator.
Background technology
Pneumatic elevator is the novel elevator technology of a kind of counterweightless utilizing gas pressure difference to carry out promoting without steel rope.As depicted in figs. 1 and 2, it forms primarily of hoistway 1, guide rail 2, car 3 and vacuum motor 6, car seal ring 4 forms confined space with the sidewall of top layer seal ring 5 and hoistway 1, the vacuum motor 6 at hoistway 1 top is utilized to bleed, pressure in described confined space is reduced, be communicated with external atmosphere pressure by bottom inflow hole 7 bottom car 3, the top, sedan-chair top of vacuum motor 6 pairs of cars 3 and sedan-chair bottom so just can be utilized to form pressure difference, utilize the effect of this pressure difference to promote car 3; Decline stage, car 3 self gravitation is relied on to carry out decline transport, energy-conserving and environment-protective.Because lifting safe each time and decline are all be based upon on the basis within elevator design load-carrying scope, so, whether the live load detecting car 3 when running each time is overloaded and just seems extremely important.The overweight protection device of current use normally utilizes rubber pad to coordinate with micro-switch to carry out elevator weighing, and when overloading, micro-switch action also feeds back signal to primary controller, and then main frame is quit work and sends overload alarm.Weighing of this mode is that one indirectly provides signal, and main frame obtains signal and quits work, and is not the ability that under overweight condition, main frame does not promote car 3, once abnormal signal, main frame has the possibility promoting car 3 equally, and such lifting belongs to unsafe condition, there is potential safety hazard; In addition, the rubber pad of employing can reduce or lose efficacy in its performance of cold district.
Summary of the invention
The invention provides a kind of pneumatic elevator overload protecting device and pneumatic elevator, to solve the problems of the technologies described above.
For solving the problems of the technologies described above; the invention provides a kind of pneumatic elevator overload protecting device; comprise weighing plate, venting plate, bolt, nut and spring; one end of described bolt is fixedly connected with described weighing plate; and successively through described venting plate and spring; the other end screws with described nut, and described venting plate is provided with some leakage holes, and the position of described leakage hole is corresponding with described weighing plate.
Preferably, the quantity of described leakage hole is 6.
Preferably, described leakage hole is distributed on described venting plate, and symmetry is located in around described bolt.
Preferably, described leakage hole is circular.
Present invention also offers a kind of pneumatic elevator, adopt pneumatic elevator overload protecting device as above, described weighing plate is communicated with outside air near one end of described spring, and the described opposite side of heavy plate is communicated with the confined space in elevator.
Preferably, described venting plate is fixedly installed on the top layer seal ring of described pneumatic elevator.
Preferably, when car is not overweight, the draught head in barometric pressure and described confined space is less than the elastic force of described spring to the application force that weighing plate produces; When car is overweight, the draught head in barometric pressure and described confined space is more than or equal to the elastic force of described spring to the application force that weighing plate produces.
Preferably, the elastic force of described spring can regulate according to the Maximum Loading Capacity of described car.
Compared with prior art, the pneumatic elevator overload protecting device of one provided by the invention and pneumatic elevator tool have the following advantages:
There is the principle of draught head in the confined space 1, in the present invention's application hoistway and external atmosphere pressure, achieve the mechanical elevator hoisting systems that initiatively makes and lose the ability promoting car, mistake when avoiding car generation overload is run, and the program is one independently mechanical solution, do not rely on electric elements, have very high reliability;
2, this scheme utilizing the principle of draught head to realize elevator overload protection, solves rubber pad in the past and weighs by the shortcoming of ambient temperature restriction, have larger Applicable scope.
Accompanying drawing explanation
Fig. 1 is the structural representation of existing pneumatic elevator;
Fig. 2 is the birds-eye view of elevator pneumatic shown in Fig. 1;
Fig. 3 is the structural representation (closed condition) 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 is the birds-eye view of plate of exitting in the pneumatic elevator overload protecting device of an embodiment of the present invention;
Fig. 6 is the structural representation that the pneumatic elevator overload protecting device of an embodiment of the present invention is applied in pneumatic elevator.
In Fig. 1 and 2: 1-hoistway, 2-guide rail, 3-car, 4-car seal ring, 5-top layer seal ring, 6-vacuum motor, 7-bottom inflow hole;
In Fig. 3-6: 8-overweight protection device, 10-weighing plate, 20-exit plate, 21-leakage hole, 30-bolt, 40-nut, 50-spring, 60-top layer seal ring.
Detailed description of the invention
In order to the technical scheme of more detailed statement foregoing invention, below list specific embodiment and carry out Proof Technology effect; It is emphasized that these embodiments are not limited to for illustration of the present invention limit the scope of the invention.
The pneumatic elevator overload protecting device 8 of one provided by the invention; as shown in Figure 3 and Figure 4; comprise weighing plate 10, venting plate 20, bolt 30, nut 40 and spring 50; one end of described bolt 30 is fixedly connected with described weighing plate 10; and successively through described venting plate 20 and spring 50; the other end screws fixing with described nut 40; in the present embodiment; described venting plate 20 is fixed on described top layer seal ring 60; described venting plate 20 is provided with some leakage holes 21, and the position of described leakage hole 21 is corresponding with described weighing plate 10.There is the principle of draught head in the confined space in the present invention's application hoistway and external atmosphere pressure; opening and closedown of overload protection device 8 is realized by the synergy of gas pressure difference and spring 50 elastic force; when overload protection device 8 is opened; confined space is communicated with external atmosphere pressure; prevent the motion of car under gas pressure difference effect; make elevator hoisting systems lose the ability promoting car, the present invention is not subject to the impact of Circuits System and local temperature, and safe reliability is higher.
Preferably, ask emphasis with reference to figure 5, the quantity of described leakage hole 21 is 6, in the present embodiment, described leakage hole 21 is circular, and described leakage hole 21 is distributed on described venting plate 20, and symmetry is located in described bolt 30 around, the bar pressure suffered by described weighing plate 10 is kept evenly.
Please emphasis with reference to figure 6; and composition graphs 3 and Fig. 4; present invention also offers a kind of pneumatic elevator; adopt pneumatic elevator overload protecting device 8 as above; described weighing plate 10 is communicated with outside air near one end of described spring 50, and the described opposite side of weighing plate 10 is communicated with the confined space in elevator.
Particularly, the startup each time of pneumatic elevator, no matter bed of interest is in the top of current layer or bottom, all needs a car upwards to run the start-up course of certain distance.
Car unloading phase; if when car is in and allows within the scope of carrying; vacuum motor works; the pressure of the confined space in hoistway reduces; when pressure is reduced to a certain degree; start upwards to run under the effect of car low pressure difference thereon; now; application force that the weighing plate 10 of described overload protection device 8 is subject to (draught head namely in barometric pressure and described confined space) is less than the elastic force of described spring 50; therefore; overload protection device 8 is in closed condition, and car normally runs.
Car unloading phase, if car overloads, vacuum motor works, the pressure of hoistway confined space reduces, when pressure is reduced to a certain degree, application force that the weighing plate 10 of described overload protection device 8 is subject to (draught head namely in barometric pressure and described confined space) is more than or equal to the elastic force of described spring 50, weighing plate 10 moves downward, overload protection device 8 is in open mode, and the pressure difference that now car is subject to also is not enough to make car upwards run, but the venting plate 20 of overload protection device 8 has started gas leakage, ambient atmosphere is made to enter in the confined space of hoistway, the pressure of confined space reduces, thus prevent the motion of car, elevator hoisting systems is made to lose the ability promoting car.
After overweight protection act, along with the reduction of car weight, overload protection device 8 can realize reset function (closed condition) automatically, and ease for use is very high.
Preferably, the elastic force of described spring 50 can regulate according to the Maximum Loading Capacity of described car, and in other words, for different elevators, the Maximum Loading Capacity of the car of setting is different, now only needs the spring 50 that corresponding replacing elastic force is different.
In sum; the pneumatic elevator overload protecting device of one provided by the invention and pneumatic elevator; this overload protection device 8 comprises weighing plate 10, venting plate 20, bolt 30, nut 40 and spring 50; one end of described bolt 30 is fixedly connected with described weighing plate 10; and successively through described venting plate 20 and spring 50; the other end screws with described nut 40, and described venting plate 20 is provided with some leakage holes 21, and the position of described leakage hole 21 is corresponding with described weighing plate 10.There is the principle of draught head in the confined space in the present invention's application hoistway and external atmosphere pressure; opening and closedown of overload protection device 8 is realized by the synergy of gas pressure difference and spring 50 elastic force; when overload protection device 8 is opened; confined space is communicated with external atmosphere pressure; prevent the motion of car under gas pressure difference effect; make elevator hoisting systems lose the ability promoting car, safe reliability is higher.
Obviously, those skilled in the art can carry out various change and modification to invention and not depart from the spirit and scope of the present invention.Like this, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.
Claims (8)
1. a pneumatic elevator overload protecting device; it is characterized in that; comprise weighing plate, venting plate, bolt, nut and spring; one end of described bolt is fixedly connected with described weighing plate; and successively through described venting plate and spring; the other end screws with described nut, and described venting plate is provided with some leakage holes, and the position of described leakage hole is corresponding with described weighing plate.
2. pneumatic elevator overload protecting device as claimed in claim 1, is characterized in that, the quantity of described leakage hole is 6.
3. pneumatic elevator overload protecting device as claimed in claim 2, is characterized in that, described leakage hole is distributed on described venting plate, and symmetry is located in around described bolt.
4. pneumatic elevator overload protecting device as claimed in claim 1, is characterized in that, described leakage hole is circular.
5. a pneumatic elevator; adopt as the pneumatic elevator overload protecting device in Claims 1-4 as described in any one; it is characterized in that, described weighing plate is communicated with outside air near one end of described spring, and the opposite side of described weighing plate is communicated with the confined space in elevator.
6. pneumatic elevator as claimed in claim 5, is characterized in that, described venting plate is fixedly installed on the top layer seal ring of described pneumatic elevator.
7. pneumatic elevator as claimed in claim 5, is characterized in that, when car is not overweight, the draught head in barometric pressure and described confined space is less than the elastic force of described spring to the application force that weighing plate produces; When car is overweight, the draught head in barometric pressure and described confined space is more than or equal to the elastic force of described spring to the application force that weighing plate produces.
8. pneumatic elevator as claimed in claim 7, is characterized in that, the elastic force of described spring can regulate according to the Maximum Loading Capacity of described car.
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 true CN104724570A (en) | 2015-06-24 |
| CN104724570B CN104724570B (en) | 2017-04-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510149557.6A Active CN104724570B (en) | 2015-03-31 | 2015-03-31 | Overload protecting device for pneumatic elevator and pneumatic elevator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021245537A1 (en) * | 2020-06-02 | 2021-12-09 | 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 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021245537A1 (en) * | 2020-06-02 | 2021-12-09 | Killakathu Ramanathan Babu | Overload valve assembly for a pneumatic vacuum elevator |
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| Publication number | Publication date |
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| CN104724570B (en) | 2017-04-26 |
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| C53 | Correction of patent of 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 |
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| 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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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. |