CN100333988C - Small-size hydraulic buffer for elevator - Google Patents
Small-size hydraulic buffer for elevator Download PDFInfo
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- CN100333988C CN100333988C CNB2004100847315A CN200410084731A CN100333988C CN 100333988 C CN100333988 C CN 100333988C CN B2004100847315 A CNB2004100847315 A CN B2004100847315A CN 200410084731 A CN200410084731 A CN 200410084731A CN 100333988 C CN100333988 C CN 100333988C
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- cylinder body
- outer cylinder
- small
- buffering
- energy storage
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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
- B66B5/28—Buffer-stops for cars, cages, or skips
- B66B5/282—Structure thereof
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Abstract
The present invention relates to a small size hydraulic buffer for elevators with ultra high speed, which comprises a piston subassembly, an outer cylinder body subassembly, a cylinder cover, an inner cylinder body with a radial throttling hole, a lower base, an inner cylinder base, a butterfly spring and an energy accumulator, wherein the inner cylinder body is provided with the radial throttling hole; the energy accumulator is connected with the outer cylinder body subassembly; the inner cylinder body is fixed with the lower base by being positioned and sealed by the inner cylinder base and forms a closed inner cavity with the piston subassembly in a sealing method; the cylinder cover is fixed to the outer cylinder body subassembly; the butterfly spring is fixed to the inner cylinder base. The present invention omits original springs used for restoring position; when objects impact the buffer, the present invention realizes buffering and position restoring through the throttling of the throttling hole and the energy storage function of the energy accumulator and by using the compressed and expanded gas in the energy accumulator; when the present invention is used for buffering, the energy accumulator stores pressure energy for buffering and absorbing impact; when the present invention used for restoring position, the present invention realizing position restoring through the energy accumulator which releases pressure energy for push the piston subassembly to move. The present invention has the characteristics of small structure size, light weight, convenient installation, small buffering impact, stable buffering process and large buffering mass range.
Description
Technical field
The present invention relates to a kind of device of buffering, especially a kind of small-size hydraulic buffer for elevator.Be used for field of mechanical technique.
Background technology
At present, water bumper is mainly realized the buffering and the two kinds of functions that reset, and all is the mode that adopts throttling at buffering course, realizes resetting with spring.When swiftly passing object impacts energy disperser suddenly, by the effect of throttling action and spring, control its deceleration/decel, reset after stop mobile and the realization buffering gradually.According to European standard EN81-1:1998 " elevator manufacturing and installation safety standard ", during when the car free fall that nominal payload is housed and with 115% command speed bump car buffer, the mean deceleration of energy disperser between action period should be not more than 1g; 2.5g above deceleration/decel in-service time should be not more than 0.04s, just can reach the elevator standard requirement.And the velocity of impact of the piston spring homing position type oleo gear that adopts at present generally all≤2.5m/s.
Find through literature search prior art, " elevator principle, use, maintenance " book (press: Electronic Industry Press of Wu Guozheng chief editor, date of publication: June in 1996 the 1st edition), chapter 6 the 5th joint the 180th page buffer of this book has partly been introduced the constructional feature of Buffer for elevator, circular thin-wall crevice throttle formula energy disperser to the adjusting of variable axle, its buffering minimax mass ratio be 3-5 times time ratio be easier to make its deceleration to reach standard-required, if mass range has just enlarged difficulty.According to its described retracing spring that is equipped with, for super high speed elevator, calculating its stop distance by the elevator standard requirement is 0.135v
2(v is the command speed m/s of elevator), add the used spring that resets, energy disperser just can't reduce its free height, must bring the waste of space, simultaneously under high speed impact, former piston spring homing position type is impacted comparatively obvious under the situation of big quality, and cushion characteristic and structure can not satisfy the needs of super high speed elevator development.
Summary of the invention
The objective of the invention is to overcome deficiency of the prior art, a kind of small-size hydraulic buffer for elevator is provided, make it solve the hyper-speed buffering course.Can't reduce height with existing piston spring homing position type oleo gear, reduce size, problem such as the buffering course performance is undesirable, damper mass is range limited.This design is not only simple in structure, scantling of structure is little, the damper mass scope big, cushion characteristic is better than spring reset formula.
The present invention is achieved by the following technical solutions, the present invention includes: piston component, cylinder cap, which is provided with radially inner cylinder body, outer cylinder body assembly, lower bottom base, inner casing base, belleville spring and the energy storage of cutoff port.Its annexation is: energy storage is connected with the outer cylinder body assembly, and inner cylinder body forms the osed top inner chamber by the location sealing of inner casing base and fixing of lower bottom base with the piston component sealing, and cylinder cap is fixed on the outer cylinder body assembly, and belleville spring is fixed on the inner casing base.
The outer cylinder body assembly is made up of outer cylinder head, outer shell, oil nozzle, upper bed-plate.Outer shell is welded on the upper bed-plate, and outer cylinder head is welded on the outer shell, and oil nozzle is welded on the outer shell, forms outer cylinder body, plays fixedly inner cylinder body, and itself and lower bottom base seal, and forms the osed top exocoel by cylinder cap and outer cylinder head sealing again.The air venting plug assembly is installed on the cylinder head outside, is used for oiling and buffering final vacuum.
Piston component keeps its perpendicular movement by piston, piston rod, piston rod head, Rubber end component movement parts by orienting sleeve.Wherein piston rod must satisfy stability and requirement of strength, and the sealing of piston and inner cylinder body must be taked combination sealing because of the reason of cutoff port, guarantees the life requirements of its work.
Have the cutoff port that changes by rule on the inner cylinder body, it is the key of whole buffering course throttling, its structure is concentric step aperture or thin-walled aperture, the diameter of aperture is to determine according to the relation between buffering minimax quality and area and the displacement, the design-calculated cutoff port is to have 2 to 3 apertures of rule by vertically and circumferentially distributing, and makes it satisfy the requirement of thin-walled aperture.Because the requirement of manufacturing process, cutoff port can be concentric step aperture.
Energy storage is a kind of energy storage equipment with certain air chamber functional structure, and it links to each other with outer cylinder body, and make it be fixed on outer cylinder body by anchor fitting by filling with inert gas.In buffering course, the effect by energy storage absorbs to be impacted and stored energy, reaches the fast Absorption energy, increases the effect of accumulation of energy, can reduce the cylinder body size of energy disperser like this, and after buffering finished, the energy by energy storage discharges to be realized resetting.
Belleville spring is fixed on the inner casing base in advance tightly by being threaded, and plays safety damped towards the end and reset function.When being buffered to end, the piston that prevents to move is directly the end of towards, and the requirement of the lowest section discharge orifice of considering simultaneously to reset when resetting, by the effect of belleville spring, makes the pressure oil in the energy storage enter inner chamber of cylinder block, guarantees normally to reset.
The present invention adopts radially cutoff port and energy storage to realize buffering and reset, the cutoff port that on inner cylinder body, distributes and change by rule, and the advantage that adopts this cutoff port is the influence that braking force and stop deceleration/decel are not subjected to oil viscosity.When the high speed object impacted energy disperser, the liquid inside and outside cylinder body had formed difference of pressure, by cutoff port and energy storage effect, changed difference of pressure, thereby realized slowing down, and reached the purpose of buffering.Structurally realize small size, cancelled former retracing spring, adopt the energy storage hold-off pressure can realize resetting, it is little that such structural shape has size, in light weight, easy for installation, and inertia is little, is quick on the draw, and can effectively absorb features such as initial impact energy.Energy storage is installed on outer cylinder body, and energy storage charges into the gas of certain pressure in advance, when buffering, outer cavity pressure is increased, gas in the energy storage by compression, thereby its pressure is increased, on function, have " air bellow " effect, behind the buffering result, when energy disperser is left in the bridge railway carriage or compartment, the pressure in the energy storage can be released, because the difference of pressure in the interior outer cylinder body promotes the piston upward movement, thereby realize resetting, whole return stroke can be very long.In buffering course, energy storage performance accumulation of energy effect, in the store buffer process in the energy, absorb the impact in the buffering course, make the maximum deceleration of buffering course not occur in the moment of impact, reduce the temperature rise of fluid simultaneously, improved damping characteristics, reduce the scantling of structure of energy disperser, reached the buffering purpose.
The present invention can not only improve damping characteristics, and has structurally reduced overall dimensions, saves the building and installation space.Consider that energy disperser mainly realizes the buffering and two functions that reset, in order to reduce shock absorbing, realize the buffering reset function, energy disperser is to adopt energy storage to come part kinetic energy in the store buffer process, and realizes plunger return.Cushion stroke of the present invention is short, and a large amount of pressure can store by energy storage by after the throttling, and keeps certain pressure, absorbs oil shock and pressure pulsation, the held stationary stop.External reset spring of the present invention has been cancelled, and the whole buffer height problem that causes owing to spring just can solve like this; Because the outside has added energy storage, total system can be held more hydraulic oil, and the too high problem of so oily temperature rise just can overcome; Energy storage can absorb pulsating pressure, can reduce to impact; The inertia of energy storage is little, and response is fast, has overcome the shortcoming of spring accumul ator well.
Description of drawings
Fig. 1 is a section of structure of the present invention
Fig. 2 is an outer cylinder body constructional drawing of the present invention
Among the figure: 1 piston component, 2 outer cylinder body assemblies, 3 piston rods, 4 cylinder caps, 5 orienting sleeves, 6 outer cylinder heads, 7 outer shells, 8 pistons, 9 inner cylinder bodies, 10 control cock, 11 upper bed-plates, 12 lower bottom bases, 13 inner casing bases, 14 belleville springs, 15 energy storages, 16 oil nozzles, 17 air venting plug assemblies, 18 Rubber ends, 19 piston rod heads
The specific embodiment
As shown in Figure 1, 2, the present invention includes: piston component 1, outer cylinder body assembly 2, cylinder cap 4, inner cylinder body 9, lower bottom base 12, inner casing base 13, belleville spring 14 and energy storage 15.Its annexation is: energy storage 15 is connected with outer cylinder body assembly 2, inner cylinder body 9 is by the location sealing of inner casing base 13 and fixing of lower bottom base 12, form the osed top inner chamber with piston component 1 sealing, cylinder cap 4 is fixed on the outer cylinder body assembly 2, and belleville spring 14 is fixed on the inner casing base 13.
Outer cylinder body assembly 2 is made up of outer cylinder head 6, outer shell 7, upper bed-plate 11, oil nozzle 16.Outer shell 7 is welded on the upper bed-plate 11, and outer cylinder head 6 is welded on the outer shell 7, and oil nozzle 16 is welded on the outer shell 7, forms outer cylinder body, and itself and lower bottom base 12 seal, and forms the osed top exocoel by cylinder cap 4 and outer cylinder head 6 sealings again.On the cylinder head 6 the air venting plug assembly is installed outside.
Piston component 1 is made up of piston rod 3, piston 8, Rubber end 18, piston rod head 19, and Rubber end 18, piston rod head 19 connect by screw, and piston rod 3 is connected with piston 8, is linked as a movable parts by back-up ring and jam nut; Orienting sleeve 5 is fixed on the cylinder cap 4 by trip ring, and piston rod passes the orienting sleeve 5 that play the guiding role, and guarantees the perpendicular movement of piston component 1.
Cylinder cap 4 is fixed on the outer cylinder head 6 by screw, packing ring, and by the sealing of seal ring realization axle, outer cylinder head 6 is provided with orienting sleeve 5, and 5 pairs of piston rods 3 of orienting sleeve play the guiding role.
Be welded with oil nozzle 16 on the outer shell 7, air venting plug assembly 17 is by the outer shell 7 that is threaded.
The present invention realizes the buffering and the two kinds of working processs that reset.When heavy impact arrives Rubber end 18,18 buffer actions of Rubber end, prevent that metal from directly impacting, then, promote 8 times motions of piston by piston rod 3, compressed liquid is along with the rising of chamber pressure, between interior exocoel, formed difference of pressure, by the liquid of cutoff port, a part is returned from return port, and a part flows into energy storage 15 by pipe and realized buffering and accumulation of energy process, behind the buffering result, weight leaves, and belleville spring 14 by compression promotes piston 8 upward movements, when to the lowest section discharge orifice, pressure in the energy storage 15 promotes piston 8 upward movements by liquid, realizes resetting.
Claims (8)
1, a kind of small-size hydraulic buffer for elevator, comprise: piston component (1), outer cylinder body assembly (2), cylinder cap (4), which is provided with the radially inner cylinder body of cutoff port (9), lower bottom base (12), inner casing base (13), it is characterized in that, also comprise: belleville spring (14) and energy storage (15), omit former resetting and used spring, its annexation is: energy storage (15) is connected with outer cylinder body assembly (2), inner cylinder body (9) is by the location sealing of inner casing base (13) and fixing of lower bottom base (12), form the osed top inner chamber with piston component (1) sealing, cylinder cap (4) is fixed on the outer cylinder body assembly (2), and belleville spring (14) is fixed on the inner casing base (13).
2, small-size hydraulic buffer for elevator according to claim 1, it is characterized in that, outer cylinder body assembly (2) is made up of outer cylinder head (6), outer shell (7), upper bed-plate (11), oil nozzle (16), outer shell (7) is welded on the upper bed-plate (11), outer cylinder head (6) is welded on the outer shell (7), oil nozzle (16) is welded on the outer shell (7), form outer cylinder body, itself and lower bottom base (12) seal, form the osed top exocoel by cylinder cap (4) and outer cylinder head (6) sealing again, cylinder head (6) is provided with the air venting plug assembly outside.
3, small-size hydraulic buffer for elevator according to claim 1, it is characterized in that, piston component (1) is made up of piston rod (3), piston (8), Rubber end (18), piston rod head (19), Rubber end (18) is connected by screw with piston rod head (19), piston rod (3) is connected with piston (8), is linked as a movable parts by back-up ring and jam nut.
4, small-size hydraulic buffer for elevator according to claim 1, it is characterized in that, inner cylinder body (9) is by the location sealing of inner casing base (13) and fixing of lower bottom base (12), form the osed top inner chamber with piston component (1) sealing, its structure of radially cutoff port on the inner cylinder body (9) is concentric stepped hole, the diameter in hole is to determine according to the relation between buffering minimax quality and area and the displacement, and satisfies the requirement of thin-walled aperture.
5, elevator according to claim 1 small size hydraulic cushion, it is characterized in that, energy storage (15) is connected to form outer energy storage equipment by connection pipe, control cock (10) and adapter substitute and outer shell (7), energy storage (15) is to have " air bellow " of initial pressure or have the air chamber function, can charge into the constructional device of unreactable gas, level or vertically arranged leather bag or plunger tpe energy storage.
6, small-size hydraulic buffer for elevator according to claim 1, it is characterized in that cylinder cap (4) is fixed on the outer cylinder head 6 by screw, packing ring, realize the sealing of axle by seal ring, outer cylinder head (6) is provided with orienting sleeve (5), and orienting sleeve (5) play the guiding role to piston rod (3).
7, elevator according to claim 1 small size hydraulic cushion is characterized in that, is welded with oil nozzle (16) on the outer shell (7), and air venting plug assembly (17) is by the outer shell that is threaded (7).
8, small-size hydraulic buffer for elevator according to claim 1 is characterized in that, belleville spring (14) is fixed on the inner casing base (13) in advance tightly by being threaded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100847315A CN100333988C (en) | 2004-12-02 | 2004-12-02 | Small-size hydraulic buffer for elevator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100847315A CN100333988C (en) | 2004-12-02 | 2004-12-02 | Small-size hydraulic buffer for elevator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1613741A CN1613741A (en) | 2005-05-11 |
| CN100333988C true CN100333988C (en) | 2007-08-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100847315A Expired - Fee Related CN100333988C (en) | 2004-12-02 | 2004-12-02 | Small-size hydraulic buffer for elevator |
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| CN (1) | CN100333988C (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100447443C (en) * | 2006-12-07 | 2008-12-31 | 佛山市南海华捷五金制品有限公司 | Durable automatic resetting oil pressure damper |
| CN103449278A (en) * | 2012-05-30 | 2013-12-18 | 欧姆尼机电科技（昆山）有限公司 | Hydraulic buffer |
| CN104165204B (en) * | 2014-07-25 | 2016-05-18 | 华侨大学 | The energy damper of piezoelectric ceramics and magnetic flow liquid combination |
| CN105668377A (en) * | 2015-08-06 | 2016-06-15 | 郭社星 | Elevator falling damping buffer device and installation method thereof |
| CN105600641A (en) * | 2015-12-01 | 2016-05-25 | 佛山市欧汇电梯配件有限公司 | Hydraulic buffer |
| CN107686076A (en) * | 2017-09-26 | 2018-02-13 | 苏州西捷克缓冲科技有限公司 | The gas mixed oil buffer of liquid |
| CN108100810A (en) * | 2017-12-19 | 2018-06-01 | 苏州市远极智能科技有限公司 | A kind of buffer of elevator |
| CN108116960A (en) * | 2017-12-19 | 2018-06-05 | 苏州市远极智能科技有限公司 | A kind of elevator |
| CN109027096B (en) * | 2018-09-04 | 2020-06-19 | 上海理工大学 | Thin-wall small-hole type hydraulic buffer |
| CN110002318B (en) * | 2019-04-26 | 2020-06-23 | 康达电梯有限公司 | Elevator tunnel buffer device |
| CN109987475A (en) * | 2019-04-29 | 2019-07-09 | 福州快科电梯工业有限公司 | Embedded multistage buffer of elevator and its working method |
| CN111322344A (en) * | 2020-04-26 | 2020-06-23 | 中国工程物理研究院总体工程研究所 | Gradual change throttle formula buffer suitable for direction drop test |
-
2004
- 2004-12-02 CN CNB2004100847315A patent/CN100333988C/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN1613741A (en) | 2005-05-11 |
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Granted publication date: 20070829 Termination date: 20100104 |