CN109140016A - A kind of screw thread inserting type rotation with spur gear speed reducer is straight to drive electrohydraulic servo valve - Google Patents
A kind of screw thread inserting type rotation with spur gear speed reducer is straight to drive electrohydraulic servo valve Download PDFInfo
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- CN109140016A CN109140016A CN201811206850.1A CN201811206850A CN109140016A CN 109140016 A CN109140016 A CN 109140016A CN 201811206850 A CN201811206850 A CN 201811206850A CN 109140016 A CN109140016 A CN 109140016A
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- speed reducer
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- spur gear
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- 238000010276 construction Methods 0.000 claims description 32
- 230000000712 assembly Effects 0.000 claims description 14
- 238000000429 assembly Methods 0.000 claims description 14
- 238000009434 installation Methods 0.000 claims description 5
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000009510 drug design Methods 0.000 description 3
- 239000004744 fabric Substances 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
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- 230000005611 electricity Effects 0.000 description 1
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/04—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor
- F16K31/047—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor characterised by mechanical means between the motor and the valve, e.g. lost motion means reducing backlash, clutches, brakes or return means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
- F16K31/53—Mechanical actuating means with toothed gearing
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Electrically Driven Valve-Operating Means (AREA)
Abstract
The screw thread inserting type rotation with spur gear speed reducer that the present invention provides a kind of is straight to drive electrohydraulic servo valve, the starting torque requirement of reduction servo motor, to enhance the adaptability that servo motor externally loads variation；It enhances electrohydraulic servo valve in the stability of zero-bit.It includes direct current brushless servo motor, valve component, spur gear speed reducer, and the output end of the direct current brushless servo motor connects the input terminal of the spur gear speed reducer, and the output end of the spur gear speed reducer connects the spool of the hair body component.
Description
Technical field
The present invention relates to the technical field of electrohydraulic servo valve, specially a kind of screw thread inserting type rotation with spur gear speed reducer
Turn straight and drives electrohydraulic servo valve.
Background technique
Key element of the electrohydraulic servo valve as electrohydraulic servo-controlling system, it is both electro-hydraulic converting element and power
Amplifier element, it connects electric part and hydraulic part, realizes the conversion and amplification of electro-hydraulic signal, performance is very big
The performance of entire electrohydraulic servo-controlling system is determined in degree, the feature high with its precision, response is fast is widely used in machine
The fields such as tool, automobile, ship, Aeronautics and Astronautics and robot.
Currently, widening with electrohydraulic servo system application field, the application of robot also mentions electrohydraulic servo valve
Gone out higher requirement: high frequency sound, high reliability, contamination resistance are strong, structure is simple, small in size, working service is convenient, it is low at
And this is convenient for integrated etc., and traditional electrohydraulic servo valve has been difficult to reach above-mentioned requirements again, existing market mainstream it is miniature electro-hydraulic
Servo valve product is 30 series of Moog, E024 is serial and 242 etc. do not design miniature screw thread plugged electric hydraulic servo, and
The inner elastomeric element of electrohydraulic servo valve makes its service life not be able to satisfy the application of robot at present, and most micro-
The electro-hydraulic electrohydraulic servo valve product of type is not all sold towards China, therefore is badly in need of a volume of independent development in robot field
Electrohydraulic servo valve small, light-weight, convenient for the extremely reliable high frequency sound of integrated and service life, especially screw thread inserting type rotate
It is straight to drive electrohydraulic servo valve.And DC servo motor rotates in the straight application field for driving electrohydraulic servo valve in screw thread inserting type and requires it
Has the function of the frequent start-stop of low-angle, this also belongs to application of the DC servo motor in the servomechanism of frequent start-stop, then
It is required that DC servo motor starting torque is big, therefore cause DC servo motor structure size bigger than normal.
Summary of the invention
In view of the above-mentioned problems, the present invention provides a kind of, electro-hydraulic watch directly is driven in the screw thread inserting type rotation with spur gear speed reducer
Valve is taken, reduces the starting torque requirement of servo motor, to enhance the adaptability that servo motor externally loads variation；Reduction is watched
The shake of motor zero-bit due to caused by mechanical property is taken, to enhance electrohydraulic servo valve in the stability of zero-bit；By suitably prolonging
The time of long servo motor frequent start-stop, to enhance servo motor in the controllability of zero-bit attachment；By using servo motor
In the input terminal use of the output end and spool of the rational design and spur gear speed reducer and servo motor of spur gear speed reducer
The locking of hexagonal holding screw, makes this electrohydraulic servo valve have overall compact space structure.
A kind of screw thread inserting type rotation with spur gear speed reducer is straight to drive electrohydraulic servo valve, it is characterised in that: it includes straight
Brushless servo motor, valve component, spur gear speed reducer are flowed, the output end of the direct current brushless servo motor connects the straight-tooth
The input terminal of speed reducer is taken turns, the output end of the spur gear speed reducer connects the spool of the hair body component.
It is further characterized by: the spur gear speed reducer includes box body of speed reducer, input straight-tooth wheel construction, output
Straight-tooth wheel construction, the cavity arrangements of the box body of speed reducer have in parallel to the input shaft of arrangement, output shaft, cover on the input shaft
Equipped with the input straight-tooth wheel construction, output straight-tooth wheel construction is set on the output shaft, the input straight-tooth wheel construction is nibbled
The output straight-tooth wheel construction of corresponding position is closed, the output par, c of the direct current brushless servo motor is inserted from top to bottom into institute
The part for stating inner cavity is the input shaft, and the shell of direct current brushless servo motor is fixed in the top cloth of the box body of speed reducer
It sets, it is the output that the convex part of the central axis of the spool of the valve component inserts the part into the inner cavity from bottom to top
Axis, the valve component are installed in the lower part of the box body of speed reducer；
The valve component includes spool, valve pocket, lower end cap assemblies, and the upper end anchor ring of the valve pocket is installed in described subtract
The corresponding position of the lower output side of fast box body, the convex part of the central axis of the spool are defeated through the box body of speed reducer
It is stretched to after outlet lower case described interior intracavitary；
The box body of speed reducer includes upper box, lower box, is fixedly mounted with after the upper box, lower box split, the top box
The upper surface of body is provided with input shaft location hole, the input shaft run through the input shaft location hole after, its bottom end be plugged in the
One installs bearing, and input straight-tooth wheel construction, the lower end surface setting of the lower box are set on the length direction of the input shaft
There is perforative output shaft mounting hole, the output shaft is after the output shaft mounting hole, its top is plugged in the second installation axle
It holds, the output straight-tooth wheel construction is set on the length direction of the output shaft；
The input straight-tooth wheel construction includes upper input gear, lower input gear, and the output straight-tooth wheel construction includes upper
Output gear, lower output gear, the upper input gear, lower input gear are set in the length direction of the input shaft,
The upper output gear, lower output gear are set in the length direction of the output shaft, and the upper input gear engagement connects
The upper output gear is connect, the lower input gear engagement connects the lower output gear, and two groups of spur gear engagements ensure to be driven
It is accurate and reliable, drive gap will not be generated；
The upper input gear, lower input gear pass through flat key respectively and are placed on the input shaft admittedly, the upper output gear,
Lower output gear passes through flat key respectively and is placed on the output shaft admittedly；
The position upper position that the lower box corresponds to the output shaft mounting hole is provided with concave hole, the nowel
The position lower position that body corresponds to the output shaft mounting hole is provided with lower concave hole, and sheeting nip is coupled on lower box
In in the upper concave hole, the lower surface of tabletting is bonded the bottom face arrangement of the upper concave hole, lower box on the lower box
Lower sheeting clearance fit is installed in the lower concave hole, and the upper surface of the lower box lower sheeting is bonded the lower concave hole
Top end face arrangement, screw connect tabletting, lower cover, lower box lower sheeting on lower box to form overall structure, the spool
Integrally-built corresponding position is run through in the convex part of central axis, and the upper end anchor ring of the valve pocket is close to the lower box lower sheeting
Lower end surface arrangement；
First fastening screw is fastenedly connected the correspondence upper surface of overall structure, valve pocket, it is ensured that easy to assembly reliable；
The part that tabletting corresponds to the output shaft on the lower box is provided with stepped hole, is disposed in the stepped hole
Glais ring；
The lower end cap assemblies include valve pocket lower cover, valve pocket lower cover pressing plate, the center of the lower valve sleeve end cap pressing plate
It is provided with a center hole, the circumferencial direction setting of the center hole is there are two oil return hole, and screw is by valve pocket lower cover, valve pocket
The affixed formation lower end cap assemblies of lower cover pressing plate, the centre bore of the valve pocket lower cover pressing plate center hole and valve pocket lower cover are same
Axis arrangement, the oil return hole of the valve pocket lower cover pressing plate and the channel the arc-shaped T alignment of valve pocket lower cover；
Second fastening screw is fastenedly connected the correspondence lower end surface of the lower end cap assemblies, valve pocket, it is ensured that easy to assembly reliable；
Lower convex ring shape positioning step is arranged in the convex annular positioning step of the upper axial end setting of the valve pocket, lower axial end,
The flat recess of the spool bottom end setting indent, the lower surface of the lower box lower sheeting is provided with the first positioning concave ring
Slot, the convex annular positioning step are plugged in the first positioning concave ring groove, and the upper surface of the valve pocket lower cover is provided with
Second positioning concave ring groove, the lower convex ring shape positioning step are plugged in the second positioning concave ring groove, ensure that overall structure is pacified
It fills efficient and convenient.
After applying the present invention, it is directly driven using DC servo motor plus spur gear speed reducer as screw thread inserting type rotation electro-hydraulic
The electro-hydraulic conversion portion of servo valve can be conducive to the starting torque requirement for reducing servo motor, so that it is external to enhance servo motor
Load the adaptability of variation；Reduce the shake of servo motor zero-bit due to caused by mechanical property, exists to enhance electrohydraulic servo valve
The stability of zero-bit；By the way that the time of servo motor frequent start-stop is appropriately extended, to enhance servo motor in zero-bit attachment
Controllability；By using the output of servo motor and the rational design and spur gear speed reducer and servo motor of spur gear speed reducer
The input terminal of end and spool is locked using interior hexagonal holding screw, this electrohydraulic servo valve is made to have overall compact space structure；
By the improvement of technological design, make this electrohydraulic servo valve that there is better processing technology and assembly technology.
Detailed description of the invention
Fig. 1 is main view schematic cross-sectional view of the invention；
Fig. 2 is the assembling schematic cross-sectional view of the specific embodiment of valve component of the invention；
Title corresponding to serial number is as follows in figure:
Direct current brushless servo motor 1, shell 101
Valve component 2, spool 21, flat recess 211, valve pocket 22, lower end cap assemblies 23, valve pocket lower cover 231, valve pocket lower end
Lid pressing plate 232
Spur gear speed reducer 3, box body of speed reducer 4, upper box 41, lower box 42, upper concave hole 421, lower concave hole 422,
Input shaft location hole 43, output shaft mounting hole 44, tabletting 45, stepped hole 451, lower box lower sheeting 46, Glais ring on lower box
47
Straight-tooth wheel construction 5 is inputted, upper input gear 51, lower input gear 52, flat key 53, straight-tooth wheel construction 6 is exported, is upper defeated
Gear 61, lower output gear 62, flat key 63, inner cavity 7, input shaft 8, output shaft 9, first install bearing 10, the second installation axle out
Hold the 11, first fastening screw 12, the second fastening screw 13.
Specific embodiment
A kind of screw thread inserting type rotation with spur gear speed reducer is straight to drive electrohydraulic servo valve, and seeing Fig. 1, it includes brush DC
The output end of servo motor 1, valve component 2, spur gear speed reducer 3, the direct current brushless servo motor 1 connects the spur gear
The input terminal of speed reducer 3, the output end of the spur gear speed reducer 3 connect the spool 21 of the hair body component 2.
Spur gear speed reducer 3 includes box body of speed reducer 4, input straight-tooth wheel construction 5, output straight-tooth wheel construction 6, speed reducer
The inner cavity 7 of cabinet 4 is disposed in parallel to the input shaft of arrangement 8, output shaft 9, and input straight-tooth wheel construction 5 is set on input shaft 8,
Output straight-tooth wheel construction 6 is set on output shaft 9, input straight-tooth wheel construction 5 engages the output straight-tooth wheel construction 6 of corresponding position,
It is input shaft 8, brush DC servo electricity that the output par, c of direct current brushless servo motor 1 inserts the part into inner cavity from top to bottom
The shell 101 of machine 1 is fixed in the top arrangement of box body of speed reducer 4, and the convex part of central axis of the spool 21 of valve component 2 is under
The part inserted on and into inner cavity 7 is output shaft 9, and valve component 2 is installed in the lower part of box body of speed reducer 4.
Specific embodiment is shown in Fig. 1 and Fig. 2: valve component 2 includes spool 21, valve pocket 22, lower end cap assemblies 23, valve pocket
22 upper end anchor ring is installed in the corresponding position of the lower output side of box body of speed reducer 4, and the convex part of the central axis of spool 21 is passed through
It is stretched in inner cavity 7 after wearing the output lower end shell of box body of speed reducer 4；
Box body of speed reducer 4 includes upper box 41, lower box 42, is fixedly mounted with after upper box 41,42 split of lower box, upper box 41
Upper surface be provided with input shaft location hole 43, input shaft 8 run through input shaft location hole 43 after, its bottom end be plugged in the first installation
Bearing 10 is set with input straight-tooth wheel construction 5 on the length direction of input shaft 8, and the lower end surface of lower box 42 is provided with perforative
Shaft mounting hole 44 is exported, output shaft 9 is after output shaft mounting hole 44, its top is plugged in the second installation bearing 11, output shaft 9
Length direction on be set with output straight-tooth wheel construction 6；
Inputting straight-tooth wheel construction 5 includes upper input gear 51, lower input gear 52, and output straight-tooth wheel construction 6 includes upper defeated
Gear 61, lower output gear 62 out, upper input gear 51, lower input gear 52 are set in the length direction of input shaft 8, on
Output gear 61, lower output gear 62 are set with to be exported on the length direction of output shaft 9, the upper engagement of input gear 51 connection
Gear 61, the lower engagement of input gear 52 connect lower output gear 62, and two groups of spur gear engagements ensure the accurate and reliable of transmission, will not
Generate drive gap；
Upper input gear 51, lower input gear 52 are placed on input shaft 8 by flat key 53 respectively admittedly, upper output gear 61, under
Output gear 62 is placed on output shaft 9 by flat key 63 respectively admittedly；
The position upper position that lower box 42 corresponds to output shaft mounting hole 44 is provided with concave hole 421, lower box 42
Position lower position corresponding to output shaft mounting hole 44 is provided with lower concave hole 422, and 45 clearance fit of tabletting is pacified on lower box
Loaded in upper concave hole 421, the bottom face that the lower surface of tabletting 45 on lower box is bonded upper concave hole 421 is arranged, under lower box
46 clearance fit of tabletting is installed in lower concave hole 422, and the upper surface of lower box lower sheeting 46 is bonded the top of lower concave hole 422
Tabletting 45, lower cover 42, the connection of lower box lower sheeting 46 on lower box are formed overall structure by face arrangement, screw, spool 21
Integrally-built corresponding position is run through in the convex part of central axis, and the upper end anchor ring of valve pocket 22 is close to the lower end of lower box lower sheeting 46
Face arrangement；
First fastening screw 12 is fastenedly connected the correspondence upper surface of overall structure, valve pocket 22, it is ensured that easy to assembly reliable；
The part that tabletting 45 corresponds to output shaft 9 on lower box is provided with stepped hole 451, is disposed with lattice in stepped hole 451
Lay circle 47；
Lower end cap assemblies 23 include valve pocket lower cover 231, valve pocket lower cover pressing plate 232, in lower valve sleeve end cap pressing plate 232
The heart is provided with a center hole, and the circumferencial direction setting of center hole is there are two oil return hole, and screw is by valve pocket lower cover 231, valve
Cover 232 affixed formation lower end cap assemblies 23 of lower cover pressing plate, 232 center hole of valve pocket lower cover pressing plate and valve pocket lower cover 231
Centre bore it is coaxially arranged, the oil return hole of valve pocket lower cover pressing plate 232 is aligned cloth with the channel arc-shaped T of valve pocket lower cover 231
It sets；
Second fastening screw 13 is fastenedly connected the correspondence lower end surface of lower end cap assemblies 23, valve pocket 22, it is ensured that it is easy to assembly can
It leans on；
Lower convex ring shape positioning step, valve is arranged in the convex annular positioning step of the upper axial end setting of valve pocket 22, lower axial end
The flat recess 211 of indent is arranged in 21 bottom end of core, and the lower surface of lower box lower sheeting 46 is provided with the first positioning concave ring groove, on
Bulge loop shape positioning step is plugged in the first positioning concave ring groove, and the upper surface of valve pocket lower cover 231 is provided with the second positioning concave ring groove,
Lower convex ring shape positioning step is plugged in the second positioning concave ring groove, ensures that overall structure is quickly and expediently installed (convex circular orientation
It is not drawn into step, lower convex ring shape positioning step figure, belongs to existing mature structure).
In the technical program, the assembled relation and valve pocket 22 of spool 21 and valve pocket 22, the channel of lower end cap assemblies 23 and
Oilhole is arranged and arrangement is identical with the straight drive electrohydraulic servo valve of existing screw thread inserting type rotation, and so it will not be repeated.
After applying the present invention, it is directly driven using DC servo motor plus spur gear speed reducer as screw thread inserting type rotation electro-hydraulic
The electro-hydraulic conversion portion of servo valve can be conducive to the starting torque requirement for reducing servo motor, so that it is external to enhance servo motor
Load the adaptability of variation；Reduce the shake of servo motor zero-bit due to caused by mechanical property, exists to enhance electrohydraulic servo valve
The stability of zero-bit；By the way that the time of servo motor frequent start-stop is appropriately extended, to enhance servo motor in zero-bit attachment
Controllability；By using the output of servo motor and the rational design and spur gear speed reducer and servo motor of spur gear speed reducer
The input terminal of end and spool is locked using interior hexagonal holding screw, this electrohydraulic servo valve is made to have overall compact space structure；
By the improvement of technological design, make this electrohydraulic servo valve that there is better processing technology and assembly technology.
Specific embodiments of the present invention are described in detail above, but content is only the preferable implementation of the invention
Example, should not be considered as limiting the invention the practical range of creation.It is all to become according to equalization made by the invention application range
Change and improve etc., it shall still fall within the scope of this patent.
Claims (10)
1. a kind of screw thread inserting type rotation with spur gear speed reducer is straight to drive electrohydraulic servo valve, it is characterised in that: it includes direct current
The output end of brushless servo motor, valve component, spur gear speed reducer, the direct current brushless servo motor connects the spur gear
The input terminal of speed reducer, the output end of the spur gear speed reducer connect the spool of the hair body component.
2. a kind of screw thread inserting type rotation with spur gear speed reducer as described in claim 1 is straight to drive electrohydraulic servo valve, spy
Sign is: the spur gear speed reducer includes box body of speed reducer, input straight-tooth wheel construction, exports straight-tooth wheel construction, described to subtract
The cavity arrangements of fast box body have in parallel to the input shaft of arrangement, output shaft, are set with the input straight-tooth on the input shaft
Wheel construction, is set with output straight-tooth wheel construction on the output shaft, the input straight-tooth wheel construction engagement corresponding position it is described
Straight-tooth wheel construction is exported, the output par, c of the direct current brushless servo motor inserts the part into the inner cavity from top to bottom and is
The input shaft, the shell of direct current brushless servo motor are fixed in the top arrangement of the box body of speed reducer, the valve component
To insert the part into the inner cavity from bottom to top be the output shaft, the valve component the convex part of central axis of spool
It is installed in the lower part of the box body of speed reducer.
3. a kind of screw thread inserting type rotation with spur gear speed reducer as claimed in claim 2 is straight to drive electrohydraulic servo valve, spy
Sign is: the valve component includes spool, valve pocket, lower end cap assemblies, and the upper end anchor ring of the valve pocket is installed in described subtract
The corresponding position of the lower output side of fast box body, the convex part of the central axis of the spool are defeated through the box body of speed reducer
It is stretched to after outlet lower case described interior intracavitary.
4. a kind of screw thread inserting type rotation with spur gear speed reducer as claimed in claim 2 is straight to drive electrohydraulic servo valve, spy
Sign is: the box body of speed reducer includes upper box, lower box, is fixedly mounted with after the upper box, lower box split, the upper box
Upper surface be provided with input shaft location hole, the input shaft run through the input shaft location hole after, its bottom end be plugged in first
Bearing is installed, input straight-tooth wheel construction is set on the length direction of the input shaft, the lower end surface of the lower box is provided with
Perforative output shaft mounting hole, the output shaft is after the output shaft mounting hole, its top is plugged in the second installation bearing,
The output straight-tooth wheel construction is set on the length direction of the output shaft.
5. a kind of screw thread inserting type rotation with spur gear speed reducer as claimed in claim 4 is straight to drive electrohydraulic servo valve, spy
Sign is: the input straight-tooth wheel construction includes upper input gear, lower input gear, and the output straight-tooth wheel construction includes upper defeated
Gear, lower output gear out, the upper input gear, lower input gear are set in the length direction of the input shaft, institute
State output gear, lower output gear is set in the length direction of the output shaft, the upper input gear engagement connection
The upper output gear, the lower input gear engagement connect the lower output gear.
6. a kind of screw thread inserting type rotation with spur gear speed reducer as claimed in claim 5 is straight to drive electrohydraulic servo valve, spy
Sign is: the upper input gear, lower input gear pass through flat key respectively and are placed on the input shaft admittedly, the upper output gear,
Lower output gear passes through flat key respectively and is placed on the output shaft admittedly.
7. a kind of screw thread inserting type rotation with spur gear speed reducer as claimed in claim 3 is straight to drive electrohydraulic servo valve, spy
Sign is: the position upper position that the lower box corresponds to the output shaft mounting hole is provided with concave hole, the nowel
The position lower position that body corresponds to the output shaft mounting hole is provided with lower concave hole, and sheeting nip is coupled on lower box
In in the upper concave hole, the lower surface of tabletting is bonded the bottom face arrangement of the upper concave hole, lower box on the lower box
Lower sheeting clearance fit is installed in the lower concave hole, and the upper surface of the lower box lower sheeting is bonded the lower concave hole
Top end face arrangement, screw connect tabletting, lower cover, lower box lower sheeting on lower box to form overall structure, the spool
Integrally-built corresponding position is run through in the convex part of central axis, and the upper end anchor ring of the valve pocket is close to the lower box lower sheeting
Lower end surface arrangement.
8. a kind of screw thread inserting type rotation with spur gear speed reducer as claimed in claim 7 is straight to drive electrohydraulic servo valve, spy
Sign is: the part that tabletting corresponds to the output shaft on the lower box is provided with stepped hole, is disposed in the stepped hole
Glais ring.
9. a kind of screw thread inserting type rotation with spur gear speed reducer as claimed in claim 7 is straight to drive electrohydraulic servo valve, spy
Sign is: the lower end cap assemblies include valve pocket lower cover, valve pocket lower cover pressing plate, and the center of the lower valve sleeve end cap pressing plate is set
It is equipped with a center hole, there are two oil return holes for the circumferencial direction setting of the center hole, and screw will be under valve pocket lower cover, valve pocket
The affixed formation lower end cap assemblies of end cap pressing plate, the centre bore of the valve pocket lower cover pressing plate center hole and valve pocket lower cover are coaxial
Arrangement, the oil return hole of the valve pocket lower cover pressing plate and the channel the arc-shaped T alignment of valve pocket lower cover；Second fastening screw
It is fastenedly connected the correspondence lower end surface of the lower end cap assemblies, valve pocket.
10. a kind of screw thread inserting type rotation with spur gear speed reducer as claimed in claim 9 is straight to drive electrohydraulic servo valve, spy
Sign is: lower convex ring shape positioning step, institute is arranged in the convex annular positioning step of the upper axial end setting of the valve pocket, lower axial end
The flat recess of spool bottom end setting indent is stated, the lower surface of the lower box lower sheeting is provided with the first positioning concave ring groove,
The convex annular positioning step is plugged in the first positioning concave ring groove, and the upper surface of the valve pocket lower cover is provided with second
Concave ring groove is positioned, the lower convex ring shape positioning step is plugged in the second positioning concave ring groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811206850.1A CN109140016A (en) | 2018-10-17 | 2018-10-17 | A kind of screw thread inserting type rotation with spur gear speed reducer is straight to drive electrohydraulic servo valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811206850.1A CN109140016A (en) | 2018-10-17 | 2018-10-17 | A kind of screw thread inserting type rotation with spur gear speed reducer is straight to drive electrohydraulic servo valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109140016A true CN109140016A (en) | 2019-01-04 |
Family
ID=64812231
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811206850.1A Withdrawn CN109140016A (en) | 2018-10-17 | 2018-10-17 | A kind of screw thread inserting type rotation with spur gear speed reducer is straight to drive electrohydraulic servo valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109140016A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109578361A (en) * | 2019-01-22 | 2019-04-05 | 江苏钧微动力科技有限公司 | A kind of Novel threaded plug-in rotation is straight to drive electrohydraulic servo valve |
| CN115890635A (en) * | 2023-01-09 | 2023-04-04 | 西北电子装备技术研究所(中国电子科技集团公司第二研究所) | Three-degree-of-freedom material box grabbing and lifting robot |
-
2018
- 2018-10-17 CN CN201811206850.1A patent/CN109140016A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109578361A (en) * | 2019-01-22 | 2019-04-05 | 江苏钧微动力科技有限公司 | A kind of Novel threaded plug-in rotation is straight to drive electrohydraulic servo valve |
| CN109578361B (en) * | 2019-01-22 | 2024-04-12 | 江苏钧微动力科技有限公司 | Novel screw thread cartridge formula rotatory electric liquid servo valve that directly drives |
| CN115890635A (en) * | 2023-01-09 | 2023-04-04 | 西北电子装备技术研究所(中国电子科技集团公司第二研究所) | Three-degree-of-freedom material box grabbing and lifting robot |
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Application publication date: 20190104 |