CN102777530A - Stepless speed-governing gas spring - Google Patents
Stepless speed-governing gas spring Download PDFInfo
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- CN102777530A CN102777530A CN2012102700574A CN201210270057A CN102777530A CN 102777530 A CN102777530 A CN 102777530A CN 2012102700574 A CN2012102700574 A CN 2012102700574A CN 201210270057 A CN201210270057 A CN 201210270057A CN 102777530 A CN102777530 A CN 102777530A
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Abstract
The invention relates to a stepless speed-governing gas spring. A rear plug is installed at the outer end of an inner cylinder sleeve in a sealed mode, the inner cylinder sleeve is connected with a connecting seat, a piston is arranged in the inner cylinder sleeve and divides the inner cylinder sleeve into a front cavity and a rear cavity, a seal ring is installed in a radial chute of the piston, a piston air-returning hole axially arranged on the piston is communicated with the radial chute and the front cavity, a piston rod connected with the piston penetrates from a guiding sealing assembly, and the inner cylinder sleeve is provided with an air hole communicated with the front cavity and an outer cavity and located on the front side of the front cavity. An outer air-returning hole and an inner air-returning hole which are positioned on the rear plug are communicated with the rear cavity, a speed-governing screw is installed in a screwed hole of the rear plug, a valve rod positioned on the upper portion of the speed-governing screw penetrates through a gasket and the seal ring which are installed in a valve rod guiding hole, the end face of the valve rod and an orifice of the outer air-returning hole form a damping flow channel, and a cavity positioned on the upper portion of the valve rod guiding hole is communicated with the outer air-returning hole and the inner air-returning hole. The stepless speed-governing gas spring is reasonable in structure and is installed on a device, and the running speed of the gas spring can be adjusted conveniently.
Description
Technical field
The present invention relates to a kind of stepless time adjustment air spring, belong to the air spring technical field.
Background technique
Air spring mainly is made up of the piston in cylinder barrel, the cylinder barrel, piston rod and valve rod etc., contain gas or contain gas mixture in the cylinder barrel.Because piston has been occupied the volume in the cylinder barrel, thereby so utilize the cross-section area of piston rod to realize the motion of piston rod less than the pressure difference of the cross-section area generation of piston.But present disclosed air spring is welded on the back plug rear portion of cylinder barrel earlier, in cylinder barrel, charges into the gas and the gas mixture of certain pressure again, in case after in cylinder barrel, charging into gas and gas mixture; Air spring has certain pressure; And piston is provided with damping hole usually, so the air spring motion speed is to rely on this damping hole size to control, in case after the damping hole size on the piston is confirmed; The movement velocity of its air spring is also just confirmed thereupon; When air spring is installed on the required apparatus,, and can not reach best utilization efficiency owing to the speed of air spring can't be regulated.Though present disclosed can regulate pressure release air spring, can after air spring is installed on the apparatus, can reach required using effect through pressure regulation again after can realizing installing through regulating the pressure release screw on the rear head.But the said structure air spring, owing to can only carry out reaching the pressure release adjusting through getting rid of the cylinder barrel internal pressure, and can not carry out speed governing to air spring.
Summary of the invention
The purpose of this invention is to provide a kind of rational in infrastructurely, be installed on the apparatus, can conveniently regulate the stepless time adjustment air spring of air spring motion speed at air spring.
The present invention is that the technological scheme that achieves the above object is: a kind of stepless time adjustment air spring; Comprise cylinder barrel, piston rod and back plug and pilot seal assembly; Said pilot seal assembly comprises preceding guide sleeve, pilot seal part and the connecting base that is installed in the cylinder barrel front side and joins successively; Back plug is fixed on the rear side of cylinder barrel, it is characterized in that: the plug sealing of said back is installed in the inner cylinder liner outer end, and inner cylinder liner is connected with connecting base; Cavity between inner cylinder liner and the cylinder barrel forms outer chamber; Piston is arranged in the inner cylinder liner and with inner cylinder liner and is divided into preceding cavity and rear chamber, in the footpath down fold of piston seal ring is installed, and the piston return-air hole that axially is provided with on the piston communicates with footpath down fold and preceding cavity; The piston rod that is connected with piston passes the pilot seal assembly, and the front side of cavity was provided with the pore that communicates with preceding cavity and outer chamber before inner cylinder liner was positioned at; Described back plug is provided with mounting hole, outer return-air hole and inner return-air hole; Outer return-air hole communicates with rear chamber; The inner return-air hole communicates with rear chamber, and mounting hole has the stem guiding hole on tapped hole and tapped hole top, and pad and seal ring are installed in the stem guiding hole; Droop adjustment screw is installed in the tapped hole of back plug; The valve rod on droop adjustment screw top passes pad and seal ring, and the valve rod end face forms damping flow channel with the aperture of outer return-air hole, and the cavity on top, stem guiding hole communicates with outer return-air hole and inner return-air hole.
The valve rod of said droop adjustment screw is provided with relief hole, and the import of relief hole communicates with cavity, and the outlet of relief hole is corresponding to seal ring.
The present invention is provided with inner cylinder liner in cylinder barrel; The front end of inner cylinder liner and connecting base, and the rear end is tightly connected with the back plug, piston is arranged on and in the inner sleeve inner sleeve is separated into preceding cavity and rear chamber; Owing to be provided with outer chamber between cylinder barrel and the inner cylinder liner; And only be provided with footpath down fold and the piston return-air hole that gas or gas mixture are passed through on the piston, so preceding cavity is communicated with outer chamber through being arranged on the anterior pore of inner cylinder liner, and communicate with rear chamber and outer chamber respectively with outer return-air hole through the inner return-air hole on the plug of back; Because the aperture of outer return-air hole and the valve rod end face on the droop adjustment screw form the damping flow channel that distance can change; So the damping force in the time of changing gas or gas mixture through damping flow channel therefore can be through the spacing between the aperture of valve rod end face on the adjusting droop adjustment screw and outer return-air hole, to change the cross-section area of damping flow channel; Simultaneously with piston on the piston return-air hole match, can realize that air spring stretches or speed regulation during compression.The present invention adopts droop adjustment screw to come the spacing between modulating valve rod end and the outer return-air hole aperture to come arbitrarily to change into the cross-section area of damping flow channel, so realizes air spring stepless speed regulation.The present invention is rational in infrastructure, after air spring is being installed on the apparatus, need not to pull down air spring and just can regulate conveniently that air spring stretches or compression speed is very easy to use.
The present invention is provided with relief hole on the valve rod of droop adjustment screw; Therefore also can realize the pressure release adjusting, when the exit position of relief hole on the valve rod is positioned at the bottom, sealing position of seal ring through regulating the axial position of droop adjustment screw; Can realize the pressure release adjusting; When the exit position of relief hole on the valve rod is positioned at the top, sealing position of seal ring, realizes sealing and can carry out speed governing, the convenient required working pressure of air spring of regulating.
Description of drawings
Below in conjunction with accompanying drawing embodiments of the invention are done further to describe in detail.
Fig. 1 is the structural representation of the air spring of stepless time adjustment of the present invention.
Fig. 2 is the I place structure for amplifying schematic representation of Fig. 1.
Fig. 3 is the I place structure for amplifying schematic representation of droop adjustment screw when pressure release of Fig. 1.
Wherein: 1-back plug, 1-1-damping flow channel, 1-2-outer return-air hole, 1-3-inner return-air hole, 1-4-stem guiding hole, 1-5-mounting hole, 1-6-cavity; 2-pad, 3-seal ring, 4-cylinder barrel, 5-inner cylinder liner, 5-1-pore, 6-piston; 6-1-footpath down fold, 6-2-piston return-air hole, 7-connecting base, 8-pilot seal part, 9-guide sleeve, 10-piston rod; 11-droop adjustment screw, 11-1-valve rod, 11-2-relief hole, 12-rear chamber, 13-outer chamber, 14-preceding cavity.
Embodiment
See shown in Fig. 1～3; Stepless time adjustment air spring of the present invention comprises cylinder barrel 4, piston rod 10 and back plug 1 and pilot seal assembly, and pilot seal assembly of the present invention comprises preceding guide sleeve 9, pilot seal part 8 and the connecting base 7 that is installed in cylinder barrel 4 front sides and joins successively; The pilot seal assembly is fixed in the cylinder barrel 4; Through the pilot seal assembly piston rod 10 is carried out pilot seal, back plug 1 is fixed on the rear side of cylinder barrel 4, can back plug 1 be welded on cylinder barrel 4 rear sides.See shown in Fig. 1～3 that plug 1 sealing is installed in inner cylinder liner 5 outer ends behind the present invention, the front portion of back plug 1 is provided with seal groove; Seal ring 3 is installed in the seal groove; Be tightly connected through seal ring 3 and inner cylinder liner 5, and inner cylinder liner 5 is connected with connecting base 7, the cavity between inner cylinder liner 5 and the cylinder barrel 4 forms outer chamber 13; Piston 6 is arranged in the inner cylinder liner 5 and with inner cylinder liner 5 and is divided into preceding cavity 14 and rear chamber 12; In the footpath down fold 6-1 of piston 6 seal ring 3 is installed, the bottom land of this footpath down fold 6-1 is cavity 14 lopsidedness forward, and the piston return-air hole 6-2 that axially is provided with on the piston 6 communicates with footpath down fold 6-1 and preceding cavity 14; Realize sealing through moving axially of piston 6 is unidirectional with inner cylinder liner 5; The piston rod 10 that is connected with piston 6 passes the pilot seal assembly, and the front end of back plug 1 and piston rod 10 can be installed on the apparatus, drives the apparatus action through moving axially of piston rod 10; The front side of cavity 14 was provided with and preceding cavity 14 and the pore 5-1 that outer chamber 13 communicates before inner cylinder liner 5 was positioned at, and cavity 14 communicates with outer chamber 13 before making.
See shown in Fig. 1～3 that plug 1 is provided with mounting hole 1-5, outer return-air hole 1-2 and inner return-air hole 1-3 behind the present invention, outer return-air hole 1-2 communicates with rear chamber 12; Inner return-air hole 1-3 communicates with rear chamber 12; Mounting hole 1-5 has the stem guiding hole 1-4 on tapped hole and tapped hole top, and pad 2 and seal ring 3 are installed in the 1-4 of stem guiding hole, and droop adjustment screw 11 is contained in plug 1 tapped hole of back; The valve rod 11-1 on droop adjustment screw 11 tops passes pad 2 and seal ring 3; Form damping flow channel 1-1 between valve rod 11-1 end face and the outer return-air hole 1-2 aperture, therefore can be through the distance between regulating valve stem 11-1 end face and the outer return-air hole 1-2 aperture, and the cross-section area that changes damping flow channel 1-1 into changes the damping force of fluid; 2 couples of valve rod 11-1 of pad of the present invention have certain guidance quality; While also carries out spacing to seal ring 3,3 couples of valve rod 11-1 seal through seal ring, and the cavity 1-6 on 1-4 top, stem guiding hole communicates with outer return-air hole 1-2 and inner return-air hole 1-3.
See shown in Fig. 1～3 that the valve rod 11-1 top of droop adjustment screw 11 of the present invention is provided with the awl post, the awl post is positioned at the outlet top of relief hole 11-2; In speed regulation process; Make air-flow or gas mixture can steadily pass through damping flow channel 1-1, the place, aperture of outer return-air hole 1-2 is provided with the inclined-plane, aperture, and the awl cylinder of valve rod 11-1 is parallel with the inclined-plane, aperture; Also can increase simultaneously the length of damping flow channel 1-1, further improve damping.
See shown in Fig. 1～3; The valve rod 11-1 of droop adjustment screw 11 of the present invention is provided with relief hole 11-2, and the import of relief hole 11-2 communicates with cavity 1-6, and the outlet of relief hole 11-2 is corresponding to seal ring 3; The import of relief hole 11-2 be positioned at the awl cylinder on and with communicate with cavity 1-6; And the outlet of relief hole 11-2 be positioned on the cylndrical surface of valve rod, through valve rod 11-1 different axial positions, realize pressure release pressure regulation and speed governing.
See Fig. 1, shown in 2; The present invention is positioned at the outlet of the relief hole 11-2 on the droop adjustment screw 11 on the center seal line top of seal ring 3; 3 couples of valve rod 11-1 of seal ring are sealed; Distance between this moment regulating valve stem 11-1 end face and the outer return-air hole 1-2 aperture is amassed and change air-flow or the gas mixture cross sections through damping flow channel 1-1, and the stepless speed regulation of realization air spring.When piston 6 is pressed into inner cylinder liner 5; Seal ring 3 is blocked piston return-air hole 6-2; Gas or gas mixture get in the cavity 1-6 on 1-4 top, stem guiding hole in the rear chamber 12 through inner return-air hole 1-3; Get into outer chamber 13 after getting into outer return-air hole 1-2 through damping flow channel 1-1 again, owing to outer chamber 13 communicates with preceding cavity 14, so the compression speed of can regulate air spring; And piston 6 is moved forward when pulling out piston rod 10; Seal ring 3 is positioned at big footpath one side of footpath down fold 6-1 and seals with inner cylinder liner 5; Gas in the preceding cavity 14 or air-flow mixtures get in the outer chamber 13 through pore 5-1; Get in the cavity 1-6 through damping flow channel 1-1 again, get into rear chamber 12 from cavity 1-6 again, reach and regulate the air spring rate of stretch.
See shown in Figure 3ly, invention is outwards regulated droop adjustment screw 11, makes the outlet of relief hole 11-2 on it be positioned at the close envelope center line bottom of seal ring 3; Because seal ring 3 can not seal the relief hole 11-2 on the valve rod 11-1, at this moment, can gas in the cavity 1-6 or gas mixture be discharged from mounting hole 1-5; Reach pressure release and regulate the pressure of air spring; Satisfy usage requirement, rapidly with droop adjustment screw 11 outer interior adjustings, reach required motion speed and get final product again.
Claims (4)
1. stepless time adjustment air spring; Comprise cylinder barrel (4), piston rod (10) and back plug (1) and pilot seal assembly; Said pilot seal assembly comprises preceding guide sleeve (9), pilot seal part (8) and the connecting base (7) that is installed in cylinder barrel (4) front side and joins successively; Back plug (1) is fixed on the rear side of cylinder barrel (4); It is characterized in that: said back plug (1) sealing is installed in the outer end of inner cylinder liner (5); Inner cylinder liner (5) is connected with connecting base (7), and the cavity between inner cylinder liner (5) and the cylinder barrel (4) forms outer chamber (13), and piston (6) is arranged in the inner cylinder liner (5) and with inner cylinder liner (5) and is divided into preceding cavity (14) and rear chamber (12); In the footpath down fold (6-1) of piston (6) seal ring (3) is installed; The piston return-air hole (6-2) that piston (6) axially is provided with communicates with footpath down fold (6-1) and preceding cavity (14), and the piston rod (10) that is connected with piston (6) passes the pilot seal assembly, and the front side that inner cylinder liner (5) is positioned at preceding cavity (14) is provided with the pore (5-1) that communicates with preceding cavity (14) and outer chamber (13); Described back plug (1) is provided with mounting hole (1-5), outer return-air hole (1-2) and inner return-air hole (1-3); Outer return-air hole (1-2) communicates with rear chamber (12); Inner return-air hole (1-3) communicates with rear chamber (12); Mounting hole (1-5) has the stem guiding hole (1-4) on tapped hole and tapped hole top; Pad (2) and seal ring (3) are installed in the stem guiding hole (1-4), and droop adjustment screw (11) is installed in the tapped hole of back plug (1), and the valve rod (11-1) on droop adjustment screw (11) top passes pad (2) and seal ring (3); Valve rod (11-1) end face forms damping flow channel (1-1) with the aperture of outer return-air hole (1-2), and the cavity (1-6) on top, stem guiding hole (1-4) communicates with outer return-air hole (1-2) and inner return-air hole (1-3).
2. stepless time adjustment air spring according to claim 1; It is characterized in that: the valve rod (11-1) of said droop adjustment screw (11) is provided with relief hole (11-2); The import of relief hole (11-2) communicates with cavity (1-6), and the outlet of relief hole (11-2) is corresponding to seal ring (3).
3. stepless time adjustment air spring according to claim 1; It is characterized in that: the outlet top that said valve rod (11-1) is positioned at relief hole (11-2) is provided with the awl post; The place, aperture of outer return-air hole (1-2) is provided with the inclined-plane, aperture, and the awl cylinder of valve rod (11-1) is parallel with the inclined-plane, aperture.
4. stepless time adjustment air spring according to claim 1 is characterized in that: the front portion of said back plug (1) is provided with seal groove, and seal ring (3) is installed in the seal groove and seals with inner cylinder liner (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210270057.4A CN102777530B (en) | 2012-07-31 | 2012-07-31 | Stepless speed-governing gas spring |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210270057.4A CN102777530B (en) | 2012-07-31 | 2012-07-31 | Stepless speed-governing gas spring |
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| Publication Number | Publication Date |
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| CN102777530A true CN102777530A (en) | 2012-11-14 |
| CN102777530B CN102777530B (en) | 2015-02-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210270057.4A Active CN102777530B (en) | 2012-07-31 | 2012-07-31 | Stepless speed-governing gas spring |
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| CN (1) | CN102777530B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105221637A (en) * | 2015-09-30 | 2016-01-06 | 福建明佳机械科技股份有限公司 | Bidirectional damper adjustable damper |
| CN105673758A (en) * | 2016-04-11 | 2016-06-15 | 常州气弹簧有限公司 | Gas supplementing type gas spring |
| CN106122336A (en) * | 2016-08-26 | 2016-11-16 | 常州市莱特气弹簧有限公司 | Compression air-leg |
| CN109268341A (en) * | 2017-10-30 | 2019-01-25 | 中日龙(襄阳)机电技术开发有限公司 | Bounce cylinder |
| WO2020096544A3 (en) * | 2018-11-07 | 2020-07-16 | İnsu Tekni̇k Maki̇na Sanayi̇ Ve Ti̇caret Anoni̇m Şi̇rketi̇ | Gas spring configuration that enables discharge via gas spring rod |
| CN112360910A (en) * | 2020-10-30 | 2021-02-12 | 丁金念 | Stepless speed regulation air spring |
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| CN201953891U (en) * | 2011-01-12 | 2011-08-31 | 吴金钟 | Damping-adjustable anti-whip balancer for vehicle |
| CN102367857A (en) * | 2011-09-20 | 2012-03-07 | 宁波一力减震器有限公司 | Adjustable force type hydraulic damper |
| CN202251603U (en) * | 2011-07-18 | 2012-05-30 | 奉化市仁龙机械有限公司 | Adjustable-speed gas spring |
| CN202719067U (en) * | 2012-07-31 | 2013-02-06 | 常州气弹簧有限公司 | Stepless speed regulation air spring |
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2012
- 2012-07-31 CN CN201210270057.4A patent/CN102777530B/en active Active
Patent Citations (6)
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| ES2195763A1 (en) * | 2002-01-28 | 2003-12-01 | Nitrogas S L | Gas cylinder. |
| CN201202761Y (en) * | 2008-01-14 | 2009-03-04 | 南通金桑机械精密部件有限公司 | Air spring capable of adjusting relief pressure |
| CN201953891U (en) * | 2011-01-12 | 2011-08-31 | 吴金钟 | Damping-adjustable anti-whip balancer for vehicle |
| CN202251603U (en) * | 2011-07-18 | 2012-05-30 | 奉化市仁龙机械有限公司 | Adjustable-speed gas spring |
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| CN202719067U (en) * | 2012-07-31 | 2013-02-06 | 常州气弹簧有限公司 | Stepless speed regulation air spring |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105221637A (en) * | 2015-09-30 | 2016-01-06 | 福建明佳机械科技股份有限公司 | Bidirectional damper adjustable damper |
| CN105673758A (en) * | 2016-04-11 | 2016-06-15 | 常州气弹簧有限公司 | Gas supplementing type gas spring |
| CN106122336A (en) * | 2016-08-26 | 2016-11-16 | 常州市莱特气弹簧有限公司 | Compression air-leg |
| CN109268341A (en) * | 2017-10-30 | 2019-01-25 | 中日龙(襄阳)机电技术开发有限公司 | Bounce cylinder |
| WO2020096544A3 (en) * | 2018-11-07 | 2020-07-16 | İnsu Tekni̇k Maki̇na Sanayi̇ Ve Ti̇caret Anoni̇m Şi̇rketi̇ | Gas spring configuration that enables discharge via gas spring rod |
| CN112360910A (en) * | 2020-10-30 | 2021-02-12 | 丁金念 | Stepless speed regulation air spring |
| CN112360910B (en) * | 2020-10-30 | 2022-07-19 | 江西力环弹簧有限公司 | Stepless speed regulation air spring |
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| Publication number | Publication date |
|---|---|
| CN102777530B (en) | 2015-02-04 |
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| PB01 | Publication | ||
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Stepless speed-governing gas spring Effective date of registration: 20190902 Granted publication date: 20150204 Pledgee: Bank of China Limited by Share Ltd Changzhou Wujin branch Pledgor: Changzhou gas spring Co., Ltd. Registration number: Y2019320000099 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20200903 Granted publication date: 20150204 Pledgee: Bank of China Limited by Share Ltd. Changzhou Wujin branch Pledgor: CHANGZHOU GAS SPRING Co.,Ltd. Registration number: Y2019320000099 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Stepless speed regulating gas spring Effective date of registration: 20200908 Granted publication date: 20150204 Pledgee: Bank of China Limited by Share Ltd. Changzhou Wujin branch Pledgor: CHANGZHOU GAS SPRING Co.,Ltd. Registration number: Y2020980005808 |