一級代理力士樂REXROTH比例減壓閥
Rexroth力士樂電磁閥原理:通電時,電磁力驅動先導閥打開先導閥,主閥上腔壓力迅速下降,在主閥上下腔內形成壓差,依靠介質壓力推動主閥關閉件上移,閥門開啟;斷電時,彈簧力把先導閥關閉,入口介質壓力通過先導孔迅速進入主閥上腔在上腔內形成壓差,從而使主閥關閉。
特點:體積小,功率低,但介質壓差范圍受限,必須滿足壓差條件。
一級代理力士樂REXROTH比例減壓閥
4WE6M62/EG24N9K4
4WE6Q6X/EG24N9K4+Z5L
4WE6Q6X/EG24N9K4+Z5L
4WE6Y61/EW110N9Z5L
4WE6Y6X/EG24N9K4
4WE6Y6X/EG24N9K4+Z5L
4WEH10D3X/HG24N9K4+Z5L
4WEH10J3X/HG24N9K4+Z5L
4WEH10J4X/6AG24N9ETS2K4
4WEH10J4X/6EG24N9ETS
4WEH10J-50/6AG24NETS2Z5L
4WEH10J73-3X/OFCG24N9K4+Z5L
4WEH10J73-3X/OFCG24N9K4+Z5L
4WEH16D63/0F6AW110-50NS
4WEH16D-7X/6EG24N9ETK4+R
4WEH16D7X/6EW230N9K4
4WEH16E7X/6AG24NETS2Z5L
4WEH16EB7X/6EG24N9EK4/B10D3
4WEH16HD72/OFGEG24N9ETS2K4
4WEH16HD7X/OF6EG24N9K4+Z5L
4WEH16J6X/6AG24N9ET-S2K4+Z5L
4WEH16J6X/6AG24N9ETS2Z4
4WEH16J6X/6AG24N9ETZ5L
4WEH16J-7X/6AG24N9EK4
4WEH16J7X/6AG24N9ETS2K4
4WE6162/EG24N9K4
4WEH16J7X/6AG24NETK9
4WEH16J-7X/6EG24N9ETK4+R
4WEH16J7X/6EG24N9ETS2K4/B10+Z4
4WEH16J7X/6HG24N9ES2K4
4WEH16Q7X/6EG24N9K4+Z5L
4WEH16Q7X/6EG24N9K4+Z5L(帶燈插頭)
4WEH16Q7X/6EG24N9K4+Z5L(帶燈插頭)
4WEH16Q7X/6EG24N9K4+Z5L(帶燈插頭)
4WEH22J6X/6HG24N9ES2K4
4WEH25E6X/6EG24N9ETK4+Z4
4WEH25E6X/6EG24N9ETK4+Z4
A4VG125HD1D1/32R-NSF02F011S
A4FM28/32W-NTC02
A2VK28MAOR1G0PE1-SO
A2FO250/60R-VPB05
A2FO160/61R-PPB05
A2FO160/61L-NPB05
A2FM90/61W-VBB010
A2FM63/61W-VBB010
A2FM32/61W-VAB020
AGEVAA/G24N9K4M/J31
AGEVAA/G24N9K4M
ABZFD-SO080-10N-100-1X/M-A
ABZEK-V1-280M-4-B1-90.00/108.00-HK SIE
ABZASG-P-1X/M
ABZASG-1X/M
ABZASG-P-1X/M
ABZASG-P-1X/M
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4WE6D7X/HG24N9K4
4WE6C7X/HG24N9K4
4WE6E7X/HG24N9K4
4WE6J7X/HG24N9K4
4WE6M7X/HG24N9K4
4WE6HB7X/HG24N9K4
4WE6JA7X/HG24N9K4
4E6EA7X/HG24N9K4
4E6EB7X/HG24N9K4
4E6L7X/HG24N9K4
4WE6Y7X/HG24N9K4
4WE6D6X/EG24N9K4
4WE6C6X/EG24N9K4
4WE6E6X/EG24N9K4
4WE6J6X/EG24N9K4
4WE6Y6X/EG24N9K4
4E6G6X/EG24N9K4
4WE6H6X/EG24N9K4
4WE6U6X/EG24N9K4
4WE6D/OFEG24N9K4
4WE6EA6X/EG24N9K4
4WE6EB6X/EG24N9K4
4WE6HB6X/EG24N9K4
4WE6HA6X/EG24N9K4
4WE6U6X/EG24N9K4
4WE6R73-6X/EG24N9K4/A12
3WE6A6X/EG24N9K4
4WE10Y3X/CG24N9K4
4E10D3X/CG24N9K4
4WE10EA3X/CG24N9K4
4WE10EB3X/CG24N9K4
4WE10E3X/CG24N9K4
4E10J3X/CG24N9K4
4WE10L3/CG24N9K4
4WE10U3X/CG24N9K4
4WE10G3X/CG24N9K4
4WE10F3X/CG24N9K4
4WE10M3X/CG24N9K4
4WE6D6X/EW230N9K4
4WE6E6X/EW230N9K4
4WE6J6X/EW230N9K4
4WE10D3X/CW230N9K4
4WE10E3X/CW230N9K4
4WE10J3X/CW230N9K4
4WEH10D4X/HG24N9K4
4WEH10E4X/HG24N9K4
4WEH16E7X/6HG24N9ETK4
4WEH16J7X/6HG24N9ETK4
4WEH16L7X/6HG24N9ETK4
4WEH16U7X/6HG24N9ETK4
4WEH16Y7X/6HG24N9ETK4
4WEH16D7X/6HG24N9ETK4
4WEH16E7X/6EG24N9ETK4
4WEH16J7X/6EG24N9ETK4
4WEH16L7X/6EG24N9ETK4
4WEH16U7X/6EG24N9ETK4
4WEH16Y7X/6EG24N9ETK4
4WEH16C7X/6EG24N9ETK4
4WEH22E7X/6HG24N9ETK4
4WEH22J7X/6HG24N9ETK4
4WEH22L7X/6HG24N9ETK4
4WEH22U7X/6HG24N9ETK4
4WEH25E6X/6HG24N9ETK4
4WEH25EA6X/6HG24N9ETK4
4WEH32E7X/6HG249K4
4WEH32J7X/6HG249K4
4WEJ32L6X/6HG249ETK4
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Z1S6PO5-4V/V
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Z2S6B-1-6X
Z2S10-1-3X
Z2S10A1-1-3X
Z2S10A2-1-3X
Z2FS10-5-3X/V
Z2FS6-2-4X/2QV
ZDB6VP2-4X/200V
ZDB6VP1-4X/315V
ZDB6VB2-4X/200V
ZDB6VC2-4X/315
ZDB10VA2-4X/100V
ZDR6DA2-4X/75YM
ZDR6DA2-4X/75Y
ZDR6DA2-4X/150Y
ZDR6DP2-4X/75YM
ZDR6DP2-4X/150YM
ZDR6DP2-4X/210YM
ZDR10DP2-5X/150YM
ZDR10DP2-5X/210YM
Z1S6D2-3X
DBDS6P1X/25
DBDH6P1X/200
DBDS10K1X/315
DBDS20K1X/315
DBDS30K1X/315
DB10-1-4X/50UW65
DB20-1-4X/50UW65
DB10-1-4X/200UW65
DB20-1-4X/200UW65
DB10-1-5X/200
DB20-1-5X/200
DB10-1-5X/315
DB20-1-5X/315
DR10-4-4X/100YM
DR10-4-4X/200YM
DR10-5-5X/100YM
DR10-5-5X/200YM
DR20-4-4X/200YM
DZ20-1-5X/200YM
DZC20-1-5X/200XY
DZC30-1-5X/200
DB20-1-4X/200UW65
4WE6D62/EG24N9K4
4WE6Y62/EG24N9K4
4WE6C62/EG24N9K4
4WE6A62/EG24N9K4
4WE6B62/EG24N9K4
4WE6J62/EG24N9K4
4WE6E62/EG24N9K4
4WE6M62/EG24N9K4
4WE6H62/EG24N9K4
4WE6HA62/EG24N9K4
4WE6G62/EG24N9K4
4WE6U62/EG24N9K5
4WE6L62/EG24N9K6
4WE10Y33/CG24N9K4
4WE10D33/CG24N9K4
4WE10C33/CG24N9K4
4WE10L33/CG24N9K4
4WE10U33/CG24N9K4
4WE10J33/CG24N9K4
4WE10E33/CG24N9K4
4WE10G33/CG24N9K4
4WE10H33/CG24N9K4
4WE6D62/EW230N9K4
4WE6Y62/EW230N9K4
4WE6J62/EW230N9K4
4WE6E62/EW230N9K4
4WE6G62/EW230N9K4
4WE6G62/EW110N9K4
4WE10D33/CW230N9K4
4WE10E33/CW230N9K4
4WE10J33/CW230N9K4
4WE10H33/CW230N9K4
4WE10G33/CW230N9K4
4WE6C6X/SG24
4WE6D6X/SG24
4WE6J6X/SG24
4WE6Y6X/SG24
4WE6H6X/SG24
4WE6E6X/SG24
4WE6EA6X/SG24
4WE6EB6X/SG24
4WE6G6X/SG24
DB10-1-4X/50UW65
DB20-1-4X/50UW65
DB10-1-5X/200
DB10-1-5X/315
DB20-1-5X/200
4WE6D6X/OFEG24N9K4
ZDR6DP2-4X/75YM
ZDR6DP2-4X/150YM
ZDR6DP2-4X/210YM
ZDR10DP2-5X/150YM
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4WEH16J7X/6EG24
4WEH16D7X/6EG24
4WEH16EA7X/6EG24
4WEH16EB7X/6EG24
4WEH22E(D,J)7X/6AG24
4WEH22E(D,J)7X/6EG24
4WEH22E(D,J)7X/6EW230
DBW10B1-5X/200-6SG24N9K4
DBW10B1-5X/200-6EG24N9K
DBW10B1-5X/200-6EW230
DBW20B1-5X/350-6SG24N9K4
DBW20B1-5X/350-6EG24N9K4
DBW20B1-5X/350-6EW230
DR10-5-5X/200YM
DR10-5-5X/100YM
DR10-4-4X/100YM
LC32A-20D-7X
LC40A-20D-7X
LC40A-20E-7X
LC50A-20D-7X
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Z2FS6-2-4X/2QV
Z2S10-2-3X
Z2S6-2-6X
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4WRKE16E-200L3X/6EG24EK31/A1D3M
4WRKE25E350L3X/6EG24EK31/A1D3M
4WRKE25E500L3XH/6EG24EK31/A1D3M
4WREE10E50-2X/G24K31/A1V
4WREE10E75-2X/G24K31/A1V
A10VSO18DFR1/31R-PPA12N00
A10VSO28DFR1/31R-PPA12N00
A10VSO45DFR1/31R-PPA12N00
A10VSO58DFR1/31R-PPA12N00
A10VSO71DFR1/32R-VPB22U99
A10VSO71DFR1/31R-PPA12N00
A10VSO100DFR1/32R-PPB12N00
A10VSO140DFR1/31R-PPB12N00
A2F010/61R-PPB05 A2F010/61L-VAB05
A2F012/61R-PPB05 A2F012/61L-VAB05
A2F016/61R-PPB05 A2F016/61R-VPB05
A2F023/61R-PPB05 A2F016/61R-VPB06
A2F028/61R-PPB05 E-A2F032/61R-PPZ05
A2F032/61R-PPB05 E-A2F032/61R-PPB05
A2F045/61R-PPB05 A2F0250/61R-PPB05
A2F056/61R-PPB05 A2F0200/61R-PPB05
A2F063/61R-PPB05 A2F0180/61R-PPB05
A2F080/61R-PPB05 A2F0160/61R-PPB05
A2F090/61R-PPB05 A2F0125/61R-PPB05
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A4VSG71EM/10R-PPB10N00 A4VSG40EM/10R-VPB10N00
A4VSG125EM/10R-PPB10N00 A4VSG40EM/10R-VZB10N00
A4VSG180EM/10R-PPB10N00 A4VSG40EM/10R-VZH10N00
A4VSG250EM/10R-PPB10N00 A4VSG40EM/10R-VZH10K31
A4VSG125HM/10R-PPB10N00 A4VSG40EM/10R-VZH10K35
A4VSG40HM/10R-PPB10N00
A4VSG250HS/10R-PPB10N0
4WE10D33/CG110N9K4
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4WRZ16W150-7X/6EG24N9ETK4/D3M
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M-35ED10CK13/350CG24N9K4
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4WRA6W1-30-2X/G24K4V
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DBETE-6X/100G 24K 31 A1Y
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4WRAE10E1-60-2X/G24N9K31/F1-V
4WRZE16W8-100-7X/6EG24N9ETK31/F1D3M
4WRZE16W8-150-7X/6EG24N9ETK31/F1D3M
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A2FM80/61W-VAB010
A11V0190RS/11R-NZD12K84
A10VS028DR/30R-PPA12N00
A10VS028DR/31R-PPA12K01
A10VS028DR/31R-PPA12K01
A10VS028DR/31R-PPA12N00
A10VSO100DR/31RPPA12OO
A10VSO18DR/31R-VPA12N00
A10VSO18DR/31R-VPA12N00
A10VSO71DFR1/31R-PPA12NOO
A10VSO71DR/31RPPA12N00
A4VSO125DR/22RPPB13NOO
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A4VSO250DR/30RPPB13N00
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1PF1R4-1X/6.30-500RA01M01
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DB10-1-50/100
DB10-1-5X/200
DB10W10 GX/
DB10W-2-5X/200
DB30-2-5x/200
DBDH10G-1X/315
DBDS10G10/100
DBDS10K1X/200
DBDS10K1X/50
DBDS10P1X/200
DBDS20G1X/100
DBDS20P1X/100
DBDS20P-1X/100
DBDS30K1X/100
DBDS30K1X/100
DBDS30K1X/100
DBDS30K1X/100
DBDS30K1X/200
DBDS30K1X/200
DBDS30K1X/200
DBDS30K1X/200
DBDS6K1X/20
DBDS6P10/20
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DBE10-5X/100YG24K4M
DBE10-5X/200YG24K4M
DBW10A2-5X/200-6AG24N9K4+Z5L
DBW10A2-5X/200-6AG24N9K4+Z5L
DBW10B 25X/200-6EG24N9K4A08V
DBW10B 25X/200-6EG24N9K4A08V
DBW10B-1-5X/315U6EW230N9K4
DBW10B2-5X/200G24NZ5L
DBW10B-2-5X/200U6EG24N9K4
DBW10B2-5X/315-6EG24N9K4
DBW20A2-52/315-6EG24N9K4
DBW25J-5X/315G24N9K4
DBW30A1-5X/2006EG24N9K4+Z5L
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DR10-5-45/100YM
DR10DP1-4X/150YM
DR20-5-5X/200Y
DR20-5-5X/200Y
DR20-5-5X/200Y
DR20-5-5X/200Y
DR20-5-5X/200Y
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DR30-5-5X/50Y
DR6DP1-5X/75Y
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DRE10-5X/100YMG24K4M
DZ20-2-5X/315Y
DZ6DP2-5X/75
DZ6DP2-5X/75
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FD12KA2X/B03V
FD12PA2X/B03V
FD16KA2X/B03V
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M-SR15KE05-1X/V
M-SR20KE02X/6EG24N9ETK4/B10+Z4
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Z2FS10-3 4X
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Z2FS16-31/S
Z2FS16-3X/S2
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Z2FS22-3X/S2
Z2FS6
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Z2FS6-2-43/1QV
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Z2FS6-2-4X/2Q
Z2FS6-2-4x/2QV
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ZDB10VA1-4X/200
ZDB10VA2-4X/100V
ZDB10VB2-41/100V
ZDB10VB2-4X/200V
ZDB6VA1-4X/50V
ZDB6VB2-42/100V
ZDB6VP2.4X/200
ZDB6VP2-40/315
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ZDB6VP2-4X/200
ZDR10DA-1-5X/210Y
ZDR10DA2-5X/150Y
ZDR10DB2-5X/210YM
ZDR10DP1-5X/150YM
ZDR10DP-1-5X/210Y
ZDR10DP2-5X/210YM
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ZDR6DA2-4X/150Y
ZDR6DA2-4X/210YM
ZDR6DAZ-4X/75YM
ZDR6DP2.1X/150YM
ZDR6DP2-43/75YM
ZDR6DP2-4X/150YM
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4WE6162/EG24N9K4
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DBDS20G-1X/315
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LC-25-A20E7X-2BAR-GN25
LC-40-DB20E7X-2BAR-GN40
LFA 16 D-7X/F
LFA-16-WEA-7X-GN16
LFA25E-7X/CA40DQMG24F
M-3SED-6-U-K-1X/350CG24NK4
M-3SED-6-U-K-1X/350CG24N9K4
DBDS-20-K1X/200-GN20-200
DBDS-30-K1X/315-GN30-315
DBDS-6-K1X/50-GN6-50BAR
4WRZ10E85-7X/6EG24N9ETK4/D3M
:唐玙昺
:
上海穎哲工業自動化設備有限公司
上海市黃浦區北京東路668號上海科技京城東樓20C2
德國力士樂REXROTH比例閥包括比例流量閥、比例壓力閥、比例換向閥。工程機械液壓操作特點,以結構形式劃分電液比例閥主要有兩類:一類是螺旋插裝式比例閥(screwin cartridge proportional valve),另一類是滑閥式比例閥(spool proportional valve)。
德國力士樂REXROTH比例閥是螺紋將電磁比例插裝件固定油路集成塊上元件,螺旋插裝閥具有應用靈活、節省管路和成本低廉等特點,近年來工程機械上應用越來越廣泛。常用螺旋插裝式比例閥有二通、三通、四通和多通等形式,二通式比例閥主比例節流閥,它常它元件一起構成復合閥,對流量、壓力進行控制;三通式比例閥主比例減壓閥,也是移動式機械液壓系統中應用較多比例閥,它主對液動操作多路閥先導油路進行操作。利用三通式比例減壓閥可以代替傳統手動減壓式先導閥,它比手動先導閥具有更多靈活性和更高控制精度。可以制成如圖1所示比例伺服控制手動多路閥,不同輸入信號,減壓閥使輸出活塞具有不同壓力或流量進而實現對多路閥閥芯位移進行比例控制。四通或多通螺旋插裝式比例閥可以對工作裝置實現單獨控制。
德國力士樂REXROTH比例閥一種是開關控制:要么全開、要么全關,流量要么zui大、要么zui小,沒有中間狀態,如普通的電磁直通閥、電磁換向閥、電液換向閥。
德國力士樂REXROTH比例閥另一種是連續控制:閥口可以根據需要打開任意一個開度,由此控制通過流量的大小,這類閥有手動控制的,如節流閥,也有電控的,如比例閥、伺服閥。
REXROTH力士樂比例閥比例閥或伺服閥的目的就是:以電控方式實現對流量的節流控制(當然經過結構上的改動也可實現壓力控制等),既然是節流控制,就必然有能量損失,伺服閥和其它閥不同的是,它的能量損失更大一些,因為它需要一定的流量來維持前置級控制油路的工作。
德國力士樂REXROTH比例閥一般來說和換向閥一樣是滑閥結構,只不過閥芯的換向不是靠電磁鐵來推動,而是靠前置級閥輸出的液壓力來推動,這一點和電液換向閥比較相似,只不過電液換向閥的前置級閥是電磁換向閥,而伺服閥的前置級閥是動態特性比較好的噴嘴擋板閥或射流管閥。
德國力士樂REXROTH比例閥也就是說,伺服閥的主閥是靠前置級閥的輸出壓力來控制的,而前置級閥的壓力則來自于伺服閥的入口p,假如p口的壓力不足,前置級閥就不能輸出足夠的壓力來推動主閥芯動作。
德國力士樂REXROTH比例閥其實缺點極多:能耗浪費大、容易出故障、抗污染能力差、價格昂貴等等等等,好處只有一個:動態性能是所有液壓閥中zui高的。就憑著這一個優點,在很多對動態特性要求高的場合不得不使用伺服閥,如飛機火箭的舵機控制、汽輪機調速等等。動態要求低一點的,基本上都是比例閥的天下了。一般說來,好像伺服系統都是閉環控制,比例多用于開環控制;其次比例閥類型要多,有比例壓力、流量控制閥等,控制比伺服藥靈活一些。從他們內部結構看,伺服閥多是零遮蓋,比例閥則有一定的死區,控制精度要低,向應要慢。但從發展趨勢看,特別在比例方向流量控制閥和伺服閥方面,兩者性能差別逐漸在縮小,另外比例閥的成本比伺服閥要低許多,抗污染能力也強!
德國REXROTH力士樂比例閥的輸入壓力為零.即.;時,輸出腔的壓力通過比例閥皮圈凸筋間空酸從唇口泄去高壓,同時,當比例閥芯所受的彈簧力大于向右的液壓力時,比例閥彈簧將比例閥芯推回原始位置,使比例閥芯與比例閥皮圈內孔*分離而*泄壓.此時輸入輸出壓力為零.隨著輸入壓力.增大,即左增大,使比例滑閥單向力平衡遭破壞.當6-時,比例閥芯左移與比例閥皮圈產生間隙形成節流并混合比倒閥常見的故障為:1,輸入輸出壓力同步.2,低壓時輔人輸出壓力同步,高壓時輸入輸出壓力正常.3,低壓時輸入輸出壓力正常,高壓時輸入輸出壓力不正常.,輸入壓力1994.№為零時(不制動時),輸出壓力不為零等等.為混合比倒圉工作性能試驗示意圖.試驗時,先將管內的空氣排凈,然后分別取低,中,高三個壓力進行試驗,輸入輔出壓力符合表1所示即為合格.表混合比例閥試驗參數表單位:表2為混合比例悶常見故障和處理方法.混合比例向在拆卸維修過程中,若污染嚴重,可用變性酒精清詵,然后烘干后裝配.橡膠件裝配時表面需涂上清潔的制動液,橡膠件不允許被機油,汽油等污染.表2混合比例閥常見故障和處理故障現象對制動性的膨響常見故障處理方法輸入輸出空載制動時汽車沒有.點,比髑閥油封唇口,更換比例悶油封
(1)頭"的感覺.有效制動距開裂,破損壓力同步2,正確裝配離加長2,維修時裝配錯誤低壓時輸入輸出,比例閥芯(2)事動卡,檢查比例悶芯表而是壓力同步,高壓影響不太明顯滯否碰傷2,比例閥皮圈侶1邊過時正常2更換比倒閥皮圈人低壓時輸入輸出緊急制動時汽車沒有.點壓力正常,高壓頭"的感覺.有效制動距混合閥堵(6)膨脹變形童換混合閥堵麗×如)時異常離加大.,檢查比倒悶彈簧是否1,比倒閥芯不回位已失效,比仞閥芯小頭表輸入壓力回零時兩后輪制動鼓過熱,后制2,混合比例閥殼體盯肭面是否碰傷動蹄早期磨損,油耗增比例閥腔小端盲孔臟堵2,清洗干凈混合比仞闊輸出壓力不回加3,比倒悶皮圈國)膨脹失殼體效3,更換比例悶皮囤國)如圖6)制動力不夠,制動距離過1,檢查進出油管接頭輸出壓力低滲漏2,檢查混合悶堵塞火3,檢查比例閻端塞目枷雌。