CN202038785U - Air pressure buffer of elevator - Google Patents
Air pressure buffer of elevator Download PDFInfo
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- CN202038785U CN202038785U CN2011201071449U CN201120107144U CN202038785U CN 202038785 U CN202038785 U CN 202038785U CN 2011201071449 U CN2011201071449 U CN 2011201071449U CN 201120107144 U CN201120107144 U CN 201120107144U CN 202038785 U CN202038785 U CN 202038785U
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Abstract
The utility model relates to an air pressure buffer of an elevator, which mainly solves the problems of long reset time and easy pollution brought by a hydraulic buffer. The air pressure buffer of the elevator comprises a cylinder body, wherein the cylinder body is provided with a cylinder cover, a piston is arranged in the cylinder body, the piston is connected with a piston rod, the piston rod penetrates through the cylinder cover, mixed inert gas is filled in the cylinder body, and the piston is provided with a plurality of unevenly distributed orifices with wide tops and narrow bottoms. The air pressure buffer of the elevator has the advantages that the required reset time is short, and the risk that a secondary drop buffer can not effectively protect a car platform sill is greatly reduced; the air pressure buffer is easy to install on a construction site, and has a low requirement on installation workers, the air pressure buffer does not need maintenance and protection in addition to regular detection, and the maintenance and protection work hour and the maintenance and protection cost are saved; and the air pressure buffer has no environment pollution and meets the requirement of environmental protection.
Description
Technical field
The utility model relates to a kind of buffer of elevator, relates in particular to the elevator pneumatic buffer that a kind of reset time is short, easy for installation, need not repair and maintenance, non-environmental-pollution.
Background technology
Energy disperser is an important step in the elevator safety protection system, play the effect of buffering when elevator is squatted the end, thereby the people of alleviating in elevator or the elevator avoids direct bump.
At present, energy disperser mainly is divided into two kinds of spring buffer and hydraulic buffers.Common spring bumper and polyurethane bumper absorber all belong to spring buffer, because there is buffering back rebound phenomenon in such energy disperser and cushions characteristics such as not steady, so can only be used for the elevator that command speed is no more than 1.0m/s.Hydraulic buffer is water bumper commonly, because it has characteristics such as stable buffering, so applicable to the elevator of any command speed.Though the structure of water bumper is different, groundwork is identical, all is the shock damping action that utilizes flow of liquid in the cylinder body, cushion the impact of car or counterweight, so the state of hydraulic oil is most important to cushion characteristic.And, exist many risks because water bumper self design-calculated reason is all restricted in all many-sides.
As shown in Figure 1, the principle of work of general water bumper is: when water bumper is subjected to the impact of car or counterweight, hydraulic oil 5 in plunger 1 ' the move downward compression cylinder ', hydraulic oil 5 ' spray to plunger cavity by torus knot discharge orifice (plunger 1 ' bottom preformed hole and control stalk 4 ' cross section product moment), in stop car or counterweight process, kinetic energy is changed into the heat energy of oil, thereby consumed the kinetic energy of elevator, elevator is stopped gradually with certain deceleration/decel.When car or counterweight leave energy disperser, plunger 1 ' retracing spring 2 ' effect under upwards reset, hydraulic oil 5 ' flow back to again cylinder body 3 ' in, energy disperser recovers normal condition.
Common water bumper is not a complete closed, when plunger 1 ' move downward hydraulic oil by compression, overwhelming majority air passes through the air extractor vent of plunger 1 ' top at a high speed to external diffusion, a small amount of simultaneously hydraulic oil 5 that gasifies ' also thereupon overflow, the hydraulic oil that overflows has just become the source of pollution of environmental pollution.In addition the small part air that has little time to overflow will be compressed to hydraulic oil 5 ' in, make the temperature build-up of hydraulic oil, viscosity changes.Hydraulic oil 5 ' from pressurized is reduced to that finally to return to initial condition relevant with the structure of energy disperser, and national Specification should be greater than 30 minutes.This that is to say that the time gap between secondary falls should be less than 30 minutes.And at the building-site of reality, the possibility that secondary falls took place within 30 minutes exist.Could check oil level and water bumper needs to wait for the time about at least 30 minutes after moving, increase repair and maintenance man-hours.Simultaneously because the highly volatile characteristics of hydraulic oil self, in the repair and maintenance work in energy disperser later stage, the repair and maintenance worker also need regularly to confirm cylinder body 3 ' interior hydraulic oil 5 ' the oil level position, if there be not enough the needs to replenish hydraulic oil, increased maintenance expense.In addition, except that the above risk that causes because of self design-calculated reason, in the system applies of reality, also exist some to use restriction or risks.Traffic limitation: conditional during transportation because of hydraulic oil belongs to combustible liquid, restriction is more obvious when particularly exporting.The packing cost risk: common water bumper is not a complete closed, and in order to prevent leaking of hydraulic oil in the transportation, generally speaking, hydraulic oil all is packing separately, and this has increased the packing cost of product undoubtedly.Installation risk: generally speaking, all be after energy disperser installs again by the on-the-spot hydraulic oil that adds of installation personnel.Because the building-site situation is more abominable, the installation personnel flowing power is bigger, and quality is uneven, and the control of hydraulic pressure oil mass is difficult to accurately, so exist bigger potential safety hazard.
As Granted publication number is CN201217591Y, name is called the Chinese utility model patent of oleo gear, it comprises pressure cylinder, orienting sleeve, plunger barrel, screw collar, upper spring lid, end cap, deflation hole, this utility model is provided with the structure of downward unidirectional air inlet at end cap deflation hole place, make fluid can not spray, cause damage, but this utility model still has above-mentioned shortcoming: energy disperser can not reset at short notice, and there are problems such as traffic limitation, packing cost height, installation risk height in hydraulic oil simultaneously.
Summary of the invention
The utility model has mainly solved the problem that the reset time that adopts water bumper to bring is long, pollute easily, and the elevator pneumatic buffer that a kind of reset time is short, can not pollute is provided.
Another goal of the invention of the present utility model is to have solved the hydraulic oil traffic limitation that water bumper brings, packing cost height, the high problem of installation risk, and a kind of easy for installation, elevator pneumatic buffer that installation requirement is low is provided.
The technical scheme that its technical matters that solves the utility model adopts is: a kind of elevator pneumatic buffer, comprise cylinder body, cylinder body is provided with cylinder cap, in cylinder body, be provided with piston, be connected with piston rod on the piston, piston rod passes cylinder cap, is filled with mixed inert gas in the described cylinder body, and described piston is provided with several cutoff ports wide at the top and narrow at the bottom, pockety.Cylinder body in the utility model, cylinder cap, piston, piston rod and mixed inert gas have constituted a gas spring structure, adopt the gas spring structure to replace traditional fluid pressure type structure, the feasible required time that resets becomes very short, greatly reduces secondary and falls the risk that energy disperser can not effectively be protected car; Gas spring structure energy disperser building site is installed simple, the erector is required low, maintenance free, has saved repair and maintenance man-hour and maintenance expense; Gas spring structure energy disperser non-environmental-pollution has satisfied environmental demands.Cutoff port wide at the top and narrow at the bottom, pockety is set on piston, these apertures form damp channel, to reach the purpose of control gaseous flow, gas is by in the process of cutoff port, suddenly reduce because flow interface is long-pending, will form eddy current, the particle of gas is clashed into mutually, rub, meanwhile, make the difference of pressure of piston upper and lower be close to maintenance all the time necessarily, so just produce the cushion effect of a fixed size, just so-called linear the deceleration, the kinetic energy of car or counterweight all transfers heat energy in this process, in the environment arround being distributed to.Through this linear moderating process, car or Beijing South Maxpower Technology Co. Ltd steadily and undisturbedly stopped with the strength of minimum.The mixed inert gas and the ambient atmosphere of filling in the cylinder body are pressed with certain pressure reduction, when reseting procedure, utilize the difference of pressure that acts on the piston rod cross section to finish the piston homing.
As a kind of preferred version, described cutoff port is crooked hole.Reach the purpose of control gaseous flow by the curve design of cutoff port passage.
As a kind of preferred version, be provided with cushion rubber bumper on described piston rod top, described cushion rubber bumper comprises the hard cushion rubber bumper that is arranged on lower floor and is arranged on the soft erase head on upper strata.This cushion rubber bumper can consume car or a fraction of kinetic energy of counterweight in the process of bump, can also absorb the noise that bump produces simultaneously, improves the traveling comfort of passenger in the car.
As a kind of preferred version, described hard cushion rubber bumper and soft erase head are formed by rubber or polyurethane manufacturing.
As a kind of preferred version, link to each other by orienting sleeve between described piston rod and the cylinder cap, the inner surface of orienting sleeve is provided with some seal rings.Seal ring is arranged between orienting sleeve and the piston rod, makes whole cylinder body airtight fully, and mixed inert gas can not spill cylinder body.
As a kind of preferred version, described cylinder cap is provided with air pressure monitoring device, and described air pressure monitoring device is connected in the elevator safety loop.Air pressure monitoring device is used to monitor the air pressure in the cylinder, if the air pressure in the cylinder is lower than setting value, air pressure monitoring device will cut off safety return circuit immediately, guarantees the safety of elevator.
As a kind of preferred version, on described piston rod, be horizontally disposed with connecting rod, on connecting rod, be vertically installed with switch and play rod, safety switch is installed on cylinder cap, when piston rod moved down, described switch was beaten excellent lower end and is contacted with safety switch, and described safety switch and elevator safety loop are in series.When energy disperser was subjected to the impact of car or counterweight, piston rod drove the switch be attached thereto together and plays rod and move downward simultaneously, and switch is played rod and triggered safety switch, disconnects safety return circuit, has guaranteed the safety of elevator.
The utility model has the advantages that: 1. the required time that resets is very short, greatly reduces secondary and falls the risk that energy disperser can not effectively be protected car; The building site install simple, the erector is required very low, need not repair and maintenance, saved repair and maintenance man-hour and maintenance expense; 3. non-environmental-pollution satisfies environmental demands.
Description of drawings
Fig. 1 is a kind of structural representation of water bumper;
Fig. 2 is a kind of structural representation of the present utility model;
Fig. 3 is a kind of structural representation of piston in the utility model;
Fig. 4 be among Fig. 3 A to a kind of structural representation at visual angle;
Fig. 5 be among Fig. 3 B to a kind of structural representation at visual angle;
Fig. 6 is the structural profile scheme drawing at C place among Fig. 2;
Fig. 7 is the structural profile scheme drawing at D place among Fig. 2.
The specific embodiment:
Below by embodiment, and in conjunction with the accompanying drawings, the technical solution of the utility model is further described.
Embodiment:
A kind of elevator pneumatic buffer of present embodiment as shown in Figure 2, comprises cylinder body 6, is provided with cylinder cap 4 in the cylinder body upper end, and cylinder body and cylinder cap are fixed by bolt seal.In cylinder body, be provided with piston 5, piston side wall is provided with seal ring, make piston and inboard wall of cylinder block form sealing, be connected with piston rod 2 on piston 5, piston rod passes cylinder cap 4, as shown in Figure 6, link to each other by orienting sleeve 3 between piston rod 2 and the cylinder cap 4, this orienting sleeve is buckled on the through hole at cylinder cap center, and piston rod is through in the orienting sleeve, on the inwall of orienting sleeve, be equipped with seal ring 12, between piston rod and orienting sleeve, form sealing.As Fig. 3, Fig. 4 and shown in Figure 5, that piston is provided with is wide at the top and narrow at the bottom, the cutoff port 11 heterogeneous that distributes, and this cutoff port be the hole of bending.In cylinder body, be filled with mixed inert gas 7.Top at piston rod 2 is provided with cushion rubber bumper, this cushion rubber bumper comprises hard cushion rubber bumper 14 and soft erase head 13, the hard cushion rubber bumper is arranged on lower floor, and soft erase head is arranged on the hard cushion rubber bumper, and hard cushion rubber bumper and soft erase head are made by rubber.Also be horizontally disposed with pipe link 8 at piston rod part, this pipe link one end is nested with between piston rod part and soft erase head, on the pipe link other end, be connected with vertically disposed switch and play rod 9, safety switch 10 is installed on cylinder cap, when piston rod moves down, switch is beaten excellent 9 lower ends and is contacted with safety switch 10, and safety switch and elevator safety loop are in series.Also be provided with air pressure monitoring device on cylinder cap 4, this air pressure monitoring device and elevator safety loop are in series.
When this pneumatic buffer was subjected to the impact of car or counterweight, piston rod 2 drove the switch that is attached thereto together and plays rod 9 and move downward simultaneously, and switch is played rod 9 and triggered safety switchs 10, disconnects safety return circuit.Piston rod 2 is in the process that descends simultaneously, and the mixed inert gas 7 in the cylinder body 6 is compressed, and the mixed inert gas compression produces the cushion effect of a fixed size, and car or counterweight are slowed down until finally stopping.When impact stroke finishes, piston rod 2 a bottom piston both sides force balance, but the pressure in the lower space is far longer than the pressure of upper space.When danger is removed, after car or counterweight break away from energy disperser, piston rod 2 bottom piston 5 upper and lower spaces are because difference of pressure is very big, piston rod 2 can rapid (in theory less than 10s) reset under the effect of air pressure, simultaneously in piston rod 2 resets the short time, cylinder body 6 pressure inside also return to initial condition, prepare to bear the impact of next time.
Specific embodiment described herein only is that spirit of the present invention is made casehistory.The technical personnel of the technical field of the invention can be made various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present invention or surmount the defined scope of appended claims.
Although this paper has used terms such as cylinder body, cylinder cap, piston, piston rod morely, do not get rid of the possibility of using other term.Using these terms only is in order to describe and explain essence of the present invention more easily; They are construed to any additional restriction all is contrary with spirit of the present invention.
Claims (7)
1. elevator pneumatic buffer, comprise cylinder body, cylinder body is provided with cylinder cap, in cylinder body, be provided with piston, be connected with piston rod on the piston, piston rod passes cylinder cap, it is characterized in that: be filled with mixed inert gas (7) in the described cylinder body (6), described piston (5) is provided with several cutoff ports wide at the top and narrow at the bottom, pockety (11).
2. a kind of elevator pneumatic buffer according to claim 1 is characterized in that described cutoff port (11) is crooked hole.
3. a kind of elevator pneumatic buffer according to claim 1, it is characterized in that being provided with cushion rubber bumper on described piston rod (2) top, described cushion rubber bumper comprises hard cushion rubber bumper (14) that is arranged on lower floor and the soft erase head (13) that is arranged on the upper strata.
4. a kind of elevator pneumatic buffer according to claim 3 is characterized in that described hard cushion rubber bumper (14) and soft erase head (13) are formed by rubber or polyurethane manufacturing.
5. a kind of elevator pneumatic buffer according to claim 1 is characterized in that linking to each other by orienting sleeve (3) between described piston rod (2) and the cylinder cap (4), and the inner surface of orienting sleeve is provided with some seal rings (12).
6. a kind of according to claim 1 or 5 elevator pneumatic buffer is characterized in that described cylinder cap (4) is provided with air pressure monitoring device, and described air pressure monitoring device is connected in the elevator safety loop.
7. a kind of elevator pneumatic buffer according to claim 1, it is characterized in that on described piston rod (2), being horizontally disposed with connecting rod (8), on connecting rod, be vertically installed with switch and play rod (9), safety switch (10) is installed on cylinder cap (4), when piston rod moves down, described switch is beaten excellent lower end and is contacted with safety switch (10), and described safety switch and elevator safety loop are in series.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201071449U CN202038785U (en) | 2011-04-13 | 2011-04-13 | Air pressure buffer of elevator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201071449U CN202038785U (en) | 2011-04-13 | 2011-04-13 | Air pressure buffer of elevator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202038785U true CN202038785U (en) | 2011-11-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201071449U Expired - Fee Related CN202038785U (en) | 2011-04-13 | 2011-04-13 | Air pressure buffer of elevator |
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| Country | Link |
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| CN (1) | CN202038785U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105253729A (en) * | 2015-10-21 | 2016-01-20 | 日立电梯（中国）有限公司 | Lift car roof colliding reset device and lift car roof colliding reset method |
| CN108996360A (en) * | 2018-08-28 | 2018-12-14 | 凯斯博电梯有限公司 | A kind of hydraulic bjuffer device for oblique elevator |
| CN112707264A (en) * | 2021-01-27 | 2021-04-27 | 陕西省特种设备检验检测研究院 | Elevator accidental impact damping method based on gas-liquid mixing |
-
2011
- 2011-04-13 CN CN2011201071449U patent/CN202038785U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105253729A (en) * | 2015-10-21 | 2016-01-20 | 日立电梯（中国）有限公司 | Lift car roof colliding reset device and lift car roof colliding reset method |
| CN108996360A (en) * | 2018-08-28 | 2018-12-14 | 凯斯博电梯有限公司 | A kind of hydraulic bjuffer device for oblique elevator |
| CN112707264A (en) * | 2021-01-27 | 2021-04-27 | 陕西省特种设备检验检测研究院 | Elevator accidental impact damping method based on gas-liquid mixing |
| CN112707264B (en) * | 2021-01-27 | 2022-04-05 | 陕西省特种设备检验检测研究院 | Elevator accidental impact damping method based on gas-liquid mixing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111116 Termination date: 20170413 |