CN107339282B - A kind of electro-hydraulic actuator of valveless - Google Patents
A kind of electro-hydraulic actuator of valveless Download PDFInfo
- Publication number
- CN107339282B CN107339282B CN201710437836.1A CN201710437836A CN107339282B CN 107339282 B CN107339282 B CN 107339282B CN 201710437836 A CN201710437836 A CN 201710437836A CN 107339282 B CN107339282 B CN 107339282B
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- Prior art keywords
- taper pipe
- intellectual material
- hole
- material annular
- cylindrical
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/18—Combined units comprising both motor and pump
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/20—Other details, e.g. assembly with regulating devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/20—Other details, e.g. assembly with regulating devices
- F15B2015/206—Combined actuation, e.g. electric and fluid actuated
Abstract
The present invention discloses a kind of electro-hydraulic actuator of valveless, comprising: intellectual material drives electricity-machine converter, pump head, hydraulic cylinder, replaceable taper tube module；It includes shell that intellectual material, which drives electricity-machine converter, be installed on the preload end cap of upper shell, be installed on the pedestal of shell lower end, be installed on the output rod for pre-tightening cover internal, the guide plate being installed below output rod, be mounted on intellectual material annular stack with intellectual material annular stack between u-shaped sleeve, the test extension bar and measuring head that are mounted on output rod；Replaceable taper tube module includes oil path block, the first cylindrical Taper Pipe and the second cylindrical Taper Pipe, the first Taper Pipe lid and the second Taper Pipe lid.The present invention, which is suitable for improving intellectual material under the premise of equal volume, drives the displacement of electricity-machine converter, and actuator work while can synchronously tested output rod power and displacement, a kind of structure of novel convertible cone angle is proposed simultaneously, improves the interchangeability of different angle conical pipe.
Description
Technical field:
The present invention relates to a kind of electro-hydraulic actuator of valveless, belong to electric hydrostatic movement device technical field.
Background technique:
Actuator is a kind of executing agency for the power-by-wire being commonly used, due to the hair at full speed of unmanned air vehicle technique
Exhibition, it is desirable to which airborne actuator gradually develops towards the direction of small size, high frequency sound, high power density.Electric hydrostatic actuator is
A kind of executing agency realizing power-by-wire, intellectual material have the characteristics that small in size, energy density is high, response is fast, constantly quilt
Applied in the design and manufacture of actuator.But the shortcomings that intellectual material, is to be displaced too small, single displacement only micron order.Cause
How this, realize the displacement equations of intellectual material, is of great significance to the development of the electric hydrostatic actuator of intellectual material driving.
In electric hydrostatic actuator, passive type reversal valve is mostly used greatly, for example, using beam type valve block, valve block outlet is directly and liquid
Two hydraulic fluid ports of cylinder pressure are connected, and the folding of valve block is controlled by the pressure difference of two sides oil liquid.But passive valve type electricity hydrostatic actuator meeting
It is limited not accomplishing that high frequency, output flow are restricted by passive valve block switching frequency.
Pass in intellectual material electricity hydrostatic actuator, between the displacement of correct understanding input and the flow exported, pressure
System can preferably recognize the inside principle of actuator, therefore can be with synchronously tested intellectual material while actuator work
Displacement and power are of great significance to the inside principle of understanding actuator, the working performance of raising actuator.
Summary of the invention:
The present invention is to provide a kind of electro-hydraulic actuator of valveless to solve the above-mentioned problems of the prior art, Neng Gouti
The interchangeability of high output flow, the synchronism of test and conical pipe.
The technical solution adopted in the present invention has: a kind of electro-hydraulic actuator of valveless, including intellectual material driving electricity-machine turns
Parallel operation, pump head, hydraulic cylinder, replaceable taper tube module；
Intellectual material driving electricity-machine converter includes shell, is installed on the first intellectual material annular in shell and stacks
The preload end cap that upper shell is stacked, be installed on the second intellectual material annular, the pedestal for being installed on shell lower end, be installed on it is pre-
The output rod of tight cover internal, the guide plate being installed below output rod are mounted on the first intellectual material annular and stack and second
Intellectual material annular stack between u-shaped sleeve, be mounted on and pre-tighten precompressed disc spring between end cap and output rod, be mounted on output
Test extension bar and measuring head on bar；
The replaceable taper tube module includes oil path block, the cylindrical Taper Pipe and second of first be embedded in inside oil path block
Cylindrical Taper Pipe, the first Taper Pipe lid being connected with oil path block and the second Taper Pipe lid, the described first cylindrical Taper Pipe and the first Taper Pipe
Lid, the second cylindrical Taper Pipe compress respectively with the second Taper Pipe lid, and the oil path block lower end surface is connected with pump head, upper surface and liquid
Cylinder pressure is connected, and pump cover lower end inner wall surface is threadedly coupled with the upper shell outer wall surface of intellectual material motor converter, pumps
Cover upper end inner wall surface is connected with pump head lower end outer wall surface.
Further, the preload end cap is threadedly coupled with upper shell inner wall, guide plate and outer casing inner wall face screw thread
Connection, the pedestal are installed on shell lower end, output rod and guide plate inner wall surface face contact, the output by bolt mode
Bar lower end surface and the second intellectual material annular stack upper end plane-plane contact, and the second intellectual material annular stacks lower end surface and u-shaped set
Lower end plane-plane contact in cylinder, the outer upper surface of the u-shaped sleeve and the first intellectual material annular stack plane-plane contact, the first intelligence
Material annular is stacked to be contacted with base upper surface.
Further, the preload end cap, which compresses precompressed disc spring in the case where screwing, makes it generate precompression, and pressure passes
The output rod of lower end is passed, output rod stacks the second intellectual material annular that pressure passes to its lower end, makes the second intelligent material
Material annular is stacked with certain precompression, and the second intellectual material annular stacks the u-shaped sleeve that residual compression is passed to its underpart
Inside, the part of the upper-end contact that the u-shaped sleeve is stacked by its external margin and the first intellectual material annular is by pressure
It passes to the first intellectual material annular to stack, stacks the first intellectual material annular with certain precompression, the first intelligent material
Material annular stacks lower end and is in contact with pedestal, stacks simultaneously so that the first intellectual material annular is stacked with the second intellectual material annular
With precompression.
Further, the inner diameter that the first intellectual material annular stacks is outer than what the second intellectual material annular stacked
Wall diameter is big, and the first intellectual material annular, which is stacked, to be stacked with the second intellectual material annular in same-phase sine bias voltage
Under driving, the elongation that the first intellectual material annular stacks drives u-shaped sleeve to move upwards, the second intelligence in u-shaped sleeve inner
Energy material annular is stacked itself can also extend while following u-shaped sleeve to move upwards, and increase motor converter to reach
Displacement.
Further, in u-shaped sleeve lower end, there are two holes, and the hole of an arc-shaped is at the edge of u-shaped sleeve bottom end
On, in order to which the conducting wire that the second intellectual material annular stacks is drawn and then is connected to power supply；One circular hole is in centre, a circular hole
At the center of u-shaped sleeve bottom end, make to be connected to test of the test extension bar from the stretching of this circular hole and with outside on output rod
Head is connected
Further, it is equipped with threaded hole in the output rod lower end surface, the test extension bar upper and lower ends have rotation direction phase
The threaded hole of same screw thread, output rod lower end surface is connected with test extension bar threaded upper ends, the spiral shell of the measuring head upper end setting
Pit is connected with the screw thread of test extension bar lower end, and the displacement of the output rod output is identical as the displacement of measuring head, so that
In the state of actuator work the first intellectual material annular of synchronous detection stack stacked with the second intellectual material annular it is common defeated
Displacement out.
Further, the upper shell is equipped with pump cover, and pump cover upper end is equipped with pump head, pacifies between pump cover and pump head
Equipped with flexible sheet, piston and piston head are installed in the flexible sheet top and bottom respectively, stay between the pump head and piston
There is pump chamber；
The pump cover lower end inner wall surface is threadedly coupled with upper shell outer wall surface, pump cover upper end inner wall surface and pump head
Lower end outer wall surface face contact is simultaneously bolted, and the flexible sheet passes through interior hexagonal between piston and piston head
Screw links into an integrated entity with piston and piston head；
The right end of the oil path block is connected to accumulator, and pump head is connect with oil path block by hexagon socket head cap screw, pump head and oil circuit
The interface of the hydraulic fluid port communicated between block is equipped with sealing ring；
The oil path block lower end and pump head are fastened with 6 Allen bolts, and oil path block upper end and hydraulic cylinder are in 4 six
Hex bolt is connected, and the described first cylindrical Taper Pipe and the second cylindrical Taper Pipe are embedded in inside oil path block, first cylinder
Sealing ring, the first Taper Pipe lid and the second Taper Pipe lid are equipped between shape Taper Pipe and the upper end and oil path block of the second cylindrical Taper Pipe
It is connect with the lower end of oil path block by hexagon socket countersunk flat cap head screw, and the first Taper Pipe lid and the first cylindrical Taper Pipe, the second Taper Pipe
It is respectively formed pressing force between lid and the second cylindrical Taper Pipe, is equipped between the first Taper Pipe lid and the first cylindrical Taper Pipe close
Seal is equipped with sealing ring between the second Taper Pipe lid and the second cylindrical Taper Pipe.
Further, the hole at the described first cylindrical Taper Pipe center is divided into three sections, and upper hole is isodiametric hole, interlude
Hole is the hole that diameter linearly becomes larger from top to bottom, and lower hole is isodiametric hole, the upper hole of the first cylindrical Taper Pipe it is straight
Diameter is smaller than the diameter of the lower hole of the first cylindrical Taper Pipe.
Further, the hole at the described second cylindrical Taper Pipe center is divided into three sections, and upper hole is isodiametric hole, interlude
Hole is the hole that diameter linearly becomes smaller from top to bottom, and lower hole is isodiametric hole, the upper hole of the second cylindrical Taper Pipe it is straight
Diameter is bigger than the diameter of the lower hole of the second cylindrical Taper Pipe.
Further, the output rod upper part is cylindrical structure, and is drilled with threaded hole, and middle section is disc
Structure, and there are four cylindrical holes for brill around, lower part is cylindrical structure, and is drilled with screw thread in bottom cylindrical center
Hole, bores that there are two threaded holes on the guide plate.
It is stacked the invention has the following beneficial effects: the first intellectual material annular in the electro-hydraulic actuator of valveless of the present invention and moral
Auspicious intellectual material annular stacks when extending at the same time, and the elongation that the first intellectual material annular stacks will drive u-shaped sleeve and transport upwards
Dynamic, the second intellectual material annular in u-shaped sleeve inner is stacked itself can also stretch while following u-shaped sleeve to move upwards
Long, the second intellectual material annular, which is stacked, drives reciprocating motion of the pistons by output rod, to reach the position for increasing motor converter
The purpose of shifting；The electro-hydraulic actuator of valveless provided by the invention, the test extension bar that the lower end of output rod is connected through a screw thread with
And with the measuring head that is threadedly coupled of test extension bar lower end can while actuator works synchronously tested output rod position
It moves, to accurately understand the working condition of actuator, that is, improves the synchronism of test.
Detailed description of the invention:
It to describe the technical solutions in the embodiments of the present invention more clearly, below will be to needed in the embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for ability
For the those of ordinary skill of domain, without creative efforts, it can also be obtained according to these attached drawings other attached
Figure.
Fig. 1 is the structural schematic diagram of the electro-hydraulic actuator of valveless provided in an embodiment of the present invention.
Fig. 2 is the structural schematic diagram of output rod provided in an embodiment of the present invention and piston coupling structure.
Fig. 3 is the structural schematic diagram of replaceable taper tube module provided in an embodiment of the present invention.
Fig. 4 is the schematic three dimensional views of oil path block provided in an embodiment of the present invention.
Fig. 5 is the schematic three dimensional views of the first conical pipe and the second conical pipe provided in an embodiment of the present invention.
Fig. 6 is the schematic three dimensional views of sleeve provided in an embodiment of the present invention.
Fig. 7 is the structural schematic diagram of hydraulic cylinder provided in an embodiment of the present invention.
Fig. 8 is the schematic three dimensional views of pump head provided in an embodiment of the present invention.
Specific embodiment:
The present invention will be further described below with reference to the drawings.
As shown in Figure 1, the present invention provides a kind of electro-hydraulic actuator of valveless, comprising: intellectual material driving electricity-machine converter,
Pump head 19, hydraulic cylinder 18, replaceable taper tube module.
Intellectual material driving electricity-machine converter includes shell 5, is installed on the first intellectual material annular in shell 5 and stacks 2
3, the preload end cap 9 for being installed on 5 upper end of shell, the pedestal 1 for being installed on 5 lower end of shell, peace are stacked with the second intellectual material annular
Loaded on the output rod 7 pre-tightened inside end cap 9, the guide plate 6 being installed below output rod 7, it is mounted on the first intellectual material annular
Stack 2 and second intellectual material annular stack u-shaped sleeve 4 between 3, be mounted on the precompressed pre-tightened between end cap 9 and output rod 7
Disc spring 8, the test extension bar 21 being mounted on output rod 7 and measuring head 22.
Replaceable taper tube module includes oil path block 17, first be embedded in oil path block 17 inside cylinder Taper Pipe 14 and the
Two cylindrical Taper Pipes 16, the first Taper Pipe lid 13 and the second Taper Pipe lid 15 being connected with oil path block 17, the first cylinder Taper Pipe 14 and
First the 13, second cylindrical Taper Pipe 16 of Taper Pipe lid compresses respectively with the second Taper Pipe lid 15.The lower end surface of oil path block 17 and pump head 19
It is connected, upper surface is connected with hydraulic cylinder 18.
It pre-tightens end cap 9 to be threadedly coupled with 5 upper end inner wall of shell, guide plate 6 is threadedly coupled with 5 inner wall of shell, pedestal 1
5 lower end of shell is installed on by bolt mode, output rod 7 and 6 inner wall surface face contact of guide plate, 7 lower end surface of output rod and the
Two intellectual material annulars stack 3 upper end plane-plane contacts, and the second intellectual material annular stacks lower end surface in 3 lower end surfaces and u-shaped sleeve 4
Face contact, the outer upper surface of u-shaped sleeve 4 and the first intellectual material annular stack plane-plane contact on 2, and the first intellectual material annular stacks
2 contact with 1 upper surface of pedestal.
Preload end cap 9, which compresses precompressed disc spring 8 in the case where screwing, makes its generate precompression, and pressure passes to the defeated of lower end
The second intellectual material annular that pressure passes to its lower end is stacked 3, stacks the second intellectual material annular by rod 7, output rod 7
3 have certain precompression, and the second intellectual material annular stacks the inside for the u-shaped sleeve 4 that 3 pass to residual compression its underpart, u
Pressure is passed to first by the part for the upper-end contact that jacket cylinder 4 stacks 2 by its external margin and the first intellectual material annular
Intellectual material annular stacks 2, and so that the first intellectual material annular is stacked 2 has certain precompression, and the first intellectual material annular is folded
2 lower end of heap is in contact with pedestal 1, has simultaneously so that the first intellectual material annular be made to stack 2 and stack 3 with the second intellectual material annular
There is precompression.
It is equipped with threaded hole in 7 lower end surface of output rod, test 21 upper and lower ends of extension bar have the identical screw thread of rotation direction, output rod
7 lower end surfaces have threaded hole to be connected with test 21 threaded upper ends of extension bar, the threaded hole and test extension bar 21 of 22 upper end of measuring head
The screw thread of lower end is connected, and the displacement that output rod 7 exports is identical as the displacement of measuring head 22, can be in the state that actuator works
The first intellectual material annular of synchronous detection stack 2 and second intellectual material annular stack 3 displacements exported jointly.
5 upper end of shell is equipped with pump cover 20, and 20 upper ends of pump cover are equipped with pump head 19, install between pump cover 20 and pump head 19
Flexible diaphragm 10, piston 11 and piston head 12 are installed in 10 top and bottom of flexible sheet respectively, between pump head 19 and piston 11
There are pump chambers.
20 lower end inner wall surfaces of pump cover are threadedly coupled with 5 upper end outer wall surface of shell, pump 20 upper end inner wall surfaces of cover and pump
First 19 lower end outer wall surface face contact is simultaneously bolted, and flexible sheet 10 passes through between piston 11 and piston head 12
Soket head cap screw links into an integrated entity with piston 11 and piston head 12.
The right end of oil path block 17 is connected to accumulator, and pump head 19 is connect with oil path block 17 by hexagon socket head cap screw, pump head 19 with
The interface of the hydraulic fluid port communicated between oil path block 17 is equipped with sealing ring.
17 lower end of oil path block and pump head 19 are fastened with 6 Allen bolts, and 17 upper end of oil path block and hydraulic cylinder 18 are with 4
Allen bolt is connected, and the first cylindrical Taper Pipe 14 and the second cylindrical Taper Pipe 16 are embedded in inside oil path block 17, the first circle
Sealing ring, the first Taper Pipe lid 13 and second are equipped between cylindricality Taper Pipe 14 and the upper end and oil path block 17 of the second cylindrical Taper Pipe 16
Taper Pipe lid 15 is connect with the lower end of oil path block 17 by hexagon socket countersunk flat cap head screw, and the first Taper Pipe lid 13 and the first cylindrical cone
Pressing force, the first Taper Pipe lid 13 and the first cylinder are respectively formed between pipe 14, the second Taper Pipe lid 15 and the second cylindrical Taper Pipe 16
It is equipped with sealing ring between shape Taper Pipe 14, is equipped with sealing ring between the second Taper Pipe lid 15 and the second cylindrical Taper Pipe 16.
The hole at the first cylindrical 14 center of Taper Pipe is divided into three sections, and upper hole is isodiametric hole, intermediate hole be on to
The hole that lower diameter linearly becomes larger, lower hole are isodiametric holes, and the diameter of the upper hole of the first cylindrical Taper Pipe 14 is than first
The diameter of the lower hole of cylindrical Taper Pipe 14 is small.
The hole at the second cylindrical 16 center of Taper Pipe is divided into three sections, and upper hole is isodiametric hole, intermediate hole be on to
The hole that lower diameter linearly becomes smaller, lower hole are isodiametric holes, and the diameter of the upper hole of the second cylindrical Taper Pipe 16 is than second
The diameter of the lower hole of cylindrical Taper Pipe 16 is big.
7 upper part of output rod is cylindrical structure, and is drilled with threaded hole, and middle section is disc-shaped structure, and in week
Enclosing brill, there are four cylindrical holes, and lower part is cylindrical structure, and is drilled with threaded hole, guide plate 6 in bottom cylindrical center
There are two threaded holes for upper brill.
The electro-hydraulic actuator of valveless of the present invention, substantially working principle include: the first intellectual material annular stack 2 inner wall it is straight
Diameter is bigger than the outer diameter that the second intellectual material annular stacks 3, the first intellectual material annular stack 2 and second intellectual material annular
It stacks 3 to be installed in shell 5, be connected by u-shaped sleeve 4 therebetween, the first intellectual material annular stacks 2 and second intellectual material
Annular stacks 3 under the driving of same-phase sine bias voltage, and the first intellectual material annular is made to stack 2 and the second intellectual material ring
It is flexible by the variation of initial position of pre-stretched amount that shape stacks 3 generations.It, can band when the first intellectual material annular stacks 2 elongation
Dynamic u-shaped sleeve 4 moves upwards, and the second intellectual material annular inside u-shaped sleeve 4 stacks 3 and following u-shaped sleeve 4 upward
Itself can also be extended while movement, to achieve the purpose that displacement equations, it is defeated to stack 3 promotions for the second intellectual material annular at this time
Rod 7 moves up, and piston 11 compresses pump chamber, pushes oil liquid movement, the first cylindrical Taper Pipe 14 and the second cylindrical Taper Pipe 16 are simultaneously
It is fuel-displaced, but the two makes to enter due to flow resistance difference 18 inlet side of hydraulic cylinder than entering the outlet of hydraulic cylinder 18 side
Flow is more, and hydraulic cylinder 18 is moved toward side, and extra oil can be stored in the accumulator being connected with oil path block 17, when the first intelligence
When material annular stacks 2 shortening, since the pressure of precompressed disc spring 8 moves downward u-shaped sleeve 4, inside u-shaped sleeve 4
The second intellectual material annular stack 3 while follow u-shaped sleeve 4 to move downward under the pressure of precompressed disc spring 8 and itself also can
Shorten, achieve the purpose that displacement equations, output rod 7 is moved downward with piston 11 at this time, and pump chamber expands, and it is true to generate part
Sky makes oil liquid flow back to pump chamber, the first cylindrical Taper Pipe 14 and the second cylindrical oil return simultaneously of Taper Pipe 16, but the two is due to flowing resistance
Power difference is fewer than the flow that the outlet of hydraulic cylinder 18 side returns to pump chamber to 18 inlet side of hydraulic cylinder, thus in pump chamber oil return
The direction of motion of hydraulic cylinder 18 is identical as the direction of motion of hydraulic cylinder 18 when pump chamber pressure oil, be stored in accumulator oil while
Pump chamber is released back to, so that hydraulic cylinder 18 is moved to the same side always.
Precompression applies and adjustment structure: as shown in Fig. 2, rotation pre-tightens end cap 9 when mechanical adjustment, end cap passes through compression
Precompressed disc spring 8 generates precompression, and pressure passes to the output rod 7 of lower end, and pressure is passed to the second intelligence of its lower end by output rod 7
Energy material annular stacks 3, and so that the second intellectual material annular is stacked 3 has certain precompression, and the second intellectual material annular stacks 3 will
Residual compression passes to the inside of the u-shaped sleeve 4 of its underpart, and u-shaped sleeve 4 passes through its external margin and the first intellectual material annular
Pressure is passed to the first intellectual material annular and stacks 2 by the part for stacking 2 upper-end contact, stacks the first intellectual material annular
2 have certain precompression, and the first intellectual material annular stacks 2 lower ends and is in contact with pedestal 1, to make the first intellectual material ring
Shape stack 2 and second intellectual material annular stack 3 there is precompression simultaneously.
Increase motor converter displacement structure: as shown in Fig. 2, the first intellectual material annular stack 2 with second intelligence material
Material annular stacks 3 and is installed in shell 5, is connected by u-shaped sleeve 4 therebetween, and the first intellectual material annular stacks 2 and second intelligence
Energy material annular stacks 3 under the driving of same-phase sine bias voltage, and the elongation that the first intellectual material annular stacks 2 will drive
U-shaped sleeve 4 moves upwards, and the second intellectual material annular inside u-shaped sleeve 4 stacks 3 and u-shaped sleeve 4 is being followed to transport upwards
It itself can also be extended while dynamic, to achieve the purpose that the displacement for increasing motor converter.
Output rod and piston coupling structure: as shown in Fig. 2, by being drilled with threaded hole on output rod 7,12 lower end of piston head has
The positioning accuracy that can effectively ensure that piston 11 is bolted in positioning groove.Also, existing ultra-magnetic telescopic electricity is quiet
Its output rod of liquid actuator is with piston using being threadedly coupled, it cannot be guaranteed that the positioning accuracy of piston, the present invention bores on output rod 7
There is threaded hole, there is positioning groove in 11 lower end of piston, the positioning accuracy that can effectively ensure that piston 11 is bolted.
Synchronism detection structure: as shown in Figure 2 and Figure 6, in 4 lower end of u-shaped sleeve, there are two holes, and the hole of an arc-shaped is in u
It is that the conducting wire that the second intellectual material annular stacks 3 for convenience is drawn and then connected to power supply on the edge of type sleeve bottom end；One
A circular hole at the center of u-shaped sleeve bottom end, make the test extension bar 21 being connected on output rod 7 from this circular hole stretch out and with it is outer
The measuring head 22 in face is connected, and test extension bar 21 and measuring head 22 are mounted with below output rod 7, is realized through measuring head 22
The size of 11 output displacement of output rod 7 and piston can be known while actuator works, so that accurately understanding acts device
Working performance.
Replaceable tapered tube configuration: as seen in figures 3-5, having inside oil path block 17 shown in Fig. 4 can place first shown in Fig. 5
The square groove of cylindrical Taper Pipe 14 and the second cylindrical Taper Pipe 16, the shown in fig. 5 first cylindrical Taper Pipe 14 and second are cylindrical
The groove of 4 a quarter circles is arranged respectively at the bottom of Taper Pipe 16, this is for convenience by the first cylindrical Taper Pipe 14 and second
Cylindrical Taper Pipe 16 is disassembled from oil path block 17.Upper end and the oil of first cylindrical Taper Pipe 14 and the second cylindrical Taper Pipe 16
The lower end that sealing ring, the first Taper Pipe lid 13 and the second Taper Pipe lid 15 and oil path block 17 are equipped between road block 17 passes through interior hexagonal
Sunk screw connection, and the first Taper Pipe lid 13 and the first cylindrical Taper Pipe 14, the second Taper Pipe lid 15 and the second cylindrical Taper Pipe
It is respectively formed pressing force between 16, is equipped with sealing ring, the second Taper Pipe lid between the first Taper Pipe lid 13 and the first cylindrical Taper Pipe 14
15 and second are equipped with sealing ring between cylindrical Taper Pipe 16, the first cylindrical Taper Pipe 14 and the first cylindrical Taper Pipe 16 have it is multiple,
Its angle, length and opening diameter have multiple, can be substituted for it when removing the first Taper Pipe lid 13 and the second Taper Pipe lid 15
The conical pipe of his size, to improve cylindrical Taper Pipe interchangeability.
In electric hydrostatic actuator, passive type reversal valve is mostly used greatly, for example, using beam type valve block, valve block outlet
Directly it is connected with two hydraulic fluid ports of hydraulic cylinder, the folding of valve block is controlled by the pressure difference of two sides oil liquid.But passive valve type electricity hydrostatic
Actuator will receive the limitation of passive valve block switching frequency to accomplish that high frequency, output flow are restricted.And conical pipe
The structure of valveless can effectively avoid the limitation of valve block intrinsic frequency, improve the working frequency of actuator entirety.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
It for member, can also make several improvements without departing from the principle of the present invention, these improvement also should be regarded as of the invention
Protection scope.
Claims (9)
1. a kind of electro-hydraulic actuator of valveless, it is characterised in that: drive electricity-machine converter, pump head (19), liquid including intellectual material
Cylinder pressure (18), replaceable taper tube module；
Intellectual material driving electricity-machine converter includes shell (5), to be installed on the first intellectual material annular in shell (5) folded
Heap (2) and the second intellectual material annular stack (3), the preload end cap (9) for being installed on shell (5) upper end, are installed under shell (5)
The pedestal (1) at end, be installed on pre-tighten end cap (9) internal output rod (7), the guide plate (6) being installed below output rod (7),
It is mounted on that the first intellectual material annular stacks (2) and the second intellectual material annular stacks u-shaped sleeve (4) between (3), is mounted on
It pre-tightens the precompressed disc spring (8) between end cap (9) and output rod (7), the test extension bar (21) being mounted on output rod (7) and surveys
It tries head (22), the inner diameter that the first intellectual material annular stacks (2) stacks the outer wall of (3) than the second intellectual material annular
Diameter is big, and the first intellectual material annular stacks (2) and the second intellectual material annular stacks (3) in same-phase sine biased electrical
Under the driving of pressure, the elongation that the first intellectual material annular stacks (2) drives u-shaped sleeve (4) to move upwards, and is in u-shaped sleeve (4)
The second internal intellectual material annular stacks (3) and itself extends while following u-shaped sleeve (4) to move upwards；
The replaceable taper tube module includes oil path block (17), is embedded in the first internal cylindrical Taper Pipe of oil path block (17)
(14) and the second cylinder Taper Pipe (16), the first Taper Pipe lid (13) and the second Taper Pipe lid (15) that are connected with oil path block (17), institute
It states the first cylindrical Taper Pipe (14) and is pressed respectively with the first Taper Pipe lid (13), the second cylindrical Taper Pipe (16) with the second Taper Pipe lid (15)
Tightly, oil path block (17) lower end surface is connected with pump head (19), and upper surface is connected with hydraulic cylinder (18), pump cover (20) lower end
Inner wall surface is threadedly coupled with shell (5) upper end outer wall surface of intellectual material motor converter, pump cover (20) upper end inner wall table
Face is connected with pump head (19) lower end outer wall surface；
The first cylindrical Taper Pipe (14) is changed from small to big in aperture from top to bottom, and the described second cylindrical Taper Pipe (16) is from upper
It is from large to small to lower aperture.
2. the electro-hydraulic actuator of valveless as described in claim 1, it is characterised in that: the preload end cap (9) and shell (5) upper end
Inner wall is threadedly coupled, and guide plate (6) is threadedly coupled with shell (5) inner wall, and the pedestal (1) is installed on by bolt mode
Shell (5) lower end, output rod (7) and guide plate (6) inner wall surface face contact, output rod (7) lower end surface and the second intelligence
Material annular stacks (3) upper end plane-plane contact, and the second intellectual material annular stacks (3) lower end surface and u-shaped sleeve (4) interior lower end surface
Face contact, the outer upper surface of the u-shaped sleeve (4) and the first intellectual material annular stack plane-plane contact on (2), the first intellectual material
Annular stacks (2) and contacts with pedestal (1) upper surface.
3. the electro-hydraulic actuator of valveless as described in claim 1 or 2, it is characterised in that: the preload end cap (9) is what is screwed
In the case of compression precompressed disc spring (8) so that its is generated precompression, pressure passes to the output rod (7) of lower end, and output rod (7) is by pressure
The the second intellectual material annular for passing to its lower end stacks (3), and the second intellectual material annular is made to stack (3) with certain precompressed
Power, the second intellectual material annular stack the inside that residual compression is passed to the u-shaped sleeve (4) of its underpart by (3), the u-shaped set
Pressure is passed to first by the part for the upper-end contact that cylinder (4) stacks (2) by its external margin and the first intellectual material annular
Intellectual material annular stacks (2), and the first intellectual material annular is made to stack (2) with certain precompression, the first intellectual material ring
Shape stacks (2) lower end and is in contact with pedestal (1), so that the first intellectual material annular stacks (2) and the second intellectual material annular is folded
Heap (3) has precompression simultaneously.
4. the electro-hydraulic actuator of valveless as described in claim 1 or 2, it is characterised in that: have in u-shaped sleeve (4) lower end
Two holes, the hole of an arc-shaped is on the edge of u-shaped sleeve bottom end, in order to which the second intellectual material annular stacks leading for (3)
Line is drawn and then is connected to power supply；One circular hole stretches the test being connected on output rod (7) at the center of u-shaped sleeve bottom end
Rod (21) stretches out from this circular hole and is connected with the measuring head of outside (22).
5. the electro-hydraulic actuator of valveless as described in claim 1 or 2, it is characterised in that: set in the output rod (7) lower end surface
Have a threaded hole, test extension bar (21) upper and lower ends have an identical screw thread of rotation direction, the threaded hole of output rod (7) lower end surface with
It tests extension bar (21) threaded upper ends to be connected, the threaded hole of measuring head (22) the upper end setting and test extension bar (21) lower end
Screw thread be connected, the displacement of the output rod (7) output is identical with the displacement of measuring head (22), so that working in actuator
The first intellectual material annular of synchronous detection stacks (2) under state and the second intellectual material annular stacks the displacement that (3) export jointly.
6. the electro-hydraulic actuator of valveless as described in claim 1, it is characterised in that: shell (5) upper end is equipped with pump cover
(20), pump cover (20) upper end is equipped with pump head (19), is equipped with flexible sheet (10), institute between pump cover (20) and pump head (19)
State flexible sheet (10) top and bottom and piston (11) and piston head (12) be installed respectively, the pump head (19) and piston (11) it
Between there are pump chambers；
The pump cover (20) lower end inner wall surface is threadedly coupled with shell (5) upper end outer wall surface, pump cover (20) upper end inner wall table
Face and pump head (19) lower end outer wall surface face contact are simultaneously bolted, and the flexible sheet (10) is in piston (11) and piston
Between head (12), and linked into an integrated entity by soket head cap screw with piston (11) and piston head (12)；
The right end of the oil path block (17) is connected to accumulator, and pump head (19) is connect with oil path block (17) by hexagon socket head cap screw, pump
The interface of the hydraulic fluid port communicated between head (19) and oil path block (17) is equipped with sealing ring；
Oil path block (17) lower end and pump head (19) are fastened with 6 Allen bolts, oil path block (17) upper end and hydraulic cylinder
(18) it is connected with 4 Allen bolts, the described first cylindrical Taper Pipe (14) and the second cylindrical Taper Pipe (16) are embedded in oil
Road block (17) is internal, between the described first cylindrical Taper Pipe (14) and the upper end and oil path block (17) of the second cylindrical Taper Pipe (16)
Equipped with sealing ring, the first Taper Pipe lid (13) and the second Taper Pipe lid (15) and the lower end of oil path block (17) pass through interior hexagonal countersunk head
Screw connection, and the first Taper Pipe lid (13) is bored with the first cylindrical Taper Pipe (14), the second Taper Pipe lid (15) and the second cylinder
It is respectively formed pressing force between pipe (16), is equipped with sealing between the first Taper Pipe lid (13) and the first cylindrical Taper Pipe (14)
Circle is equipped with sealing ring between the second Taper Pipe lid (15) and the second cylindrical Taper Pipe (16).
7. the electro-hydraulic actuator of valveless as claimed in claim 6, it is characterised in that: described first cylindrical Taper Pipe (14) center
Hole is divided into three sections, and upper hole is isodiametric hole, and intermediate hole is the hole that diameter linearly becomes larger from top to bottom, and lower hole is
The hole of diameter, the diameter of the lower hole of the diameter of the upper hole of the first cylindrical Taper Pipe (14) Taper Pipe (14) more cylindrical than first
It is small.
8. the electro-hydraulic actuator of valveless as claimed in claim 7, it is characterised in that: described second cylindrical Taper Pipe (16) center
Hole is divided into three sections, and upper hole is isodiametric hole, and intermediate hole is the hole that diameter linearly becomes smaller from top to bottom, and lower hole is
The hole of diameter, the diameter of the lower hole of the diameter of the upper hole of the second cylindrical Taper Pipe (16) Taper Pipe (16) more cylindrical than second
Greatly.
9. the electro-hydraulic actuator of valveless as claimed in claim 8, it is characterised in that: output rod (7) upper part is cylinder
Type structure, and it is drilled with threaded hole, middle section is disc-shaped structure, and is bored around there are four cylindrical hole, and lower part is
Cylindrical structure, and it is drilled with threaded hole in bottom cylindrical center, there are two threaded holes for brill on the guide plate (6).
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| CN201710437836.1A CN107339282B (en) | 2017-06-12 | 2017-06-12 | A kind of electro-hydraulic actuator of valveless |
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| CN201710437836.1A CN107339282B (en) | 2017-06-12 | 2017-06-12 | A kind of electro-hydraulic actuator of valveless |
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| CN107339282B true CN107339282B (en) | 2019-06-04 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108984917A (en) * | 2018-07-20 | 2018-12-11 | 北京航空航天大学 | Large aircraft flies control actuating system intelligent design and evaluation method |
| CN110939632B (en) * | 2019-11-01 | 2021-09-14 | 北京自动化控制设备研究所 | Giant magnetostrictive electro-hydrostatic actuator |
| CN111779728B (en) * | 2020-06-04 | 2022-04-19 | 南京航空航天大学 | Bidirectional speed regulating system for stacked intelligent material driven electro-hydrostatic actuator and control method thereof |
| CN114321440B (en) * | 2021-12-30 | 2024-03-15 | 中航工业南京伺服控制系统有限公司 | Intelligent material driven differential redundancy servo valve and working method thereof |
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| CN202707664U (en) * | 2012-08-18 | 2013-01-30 | 山西金开源实业有限公司 | Ultrahigh pressure unloading speed regulation device |
| CN104755771A (en) * | 2012-11-05 | 2015-07-01 | 萱场工业株式会社 | Cylinder control device |
| CN105003494A (en) * | 2015-05-22 | 2015-10-28 | 南京航空航天大学 | Actuator |
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| EP3112699A1 (en) * | 2015-06-30 | 2017-01-04 | Goodrich Actuation Systems SAS | Electro hydrostatic actuators |
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| JP5214574B2 (en) * | 2009-10-20 | 2013-06-19 | カヤバ工業株式会社 | Electric hydraulic actuator |
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| CN202707664U (en) * | 2012-08-18 | 2013-01-30 | 山西金开源实业有限公司 | Ultrahigh pressure unloading speed regulation device |
| CN104755771A (en) * | 2012-11-05 | 2015-07-01 | 萱场工业株式会社 | Cylinder control device |
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