CN107339282A - A kind of electro-hydraulic actuator of valveless - Google Patents
A kind of electro-hydraulic actuator of valveless Download PDFInfo
- Publication number
- CN107339282A CN107339282A CN201710437836.1A CN201710437836A CN107339282A CN 107339282 A CN107339282 A CN 107339282A CN 201710437836 A CN201710437836 A CN 201710437836A CN 107339282 A CN107339282 A CN 107339282A
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- Prior art keywords
- taper pipe
- intellectual material
- material annular
- hole
- lever
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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
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Actuator (AREA)
Abstract
The present invention discloses a kind of electro-hydraulic actuator of valveless, including：Intellectual material driving electricity-machine converter, pump head, hydraulic cylinder, replaceable taper tube module；Intellectual material driving electricity-machine converter includes shell, be installed on the pretension end cap of shell upper end, be installed on the base of shell lower end, be installed on the take-off lever of pretension cover internal, the guide plate being installed on below take-off lever, installed in intellectual material annular stack with intellectual material annular stack between u-shaped sleeve, test extension bar and measuring head on take-off lever；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 is applied to improve the displacement of intellectual material driving electricity-machine converter on the premise of equal volume, and while actuator works can synchronously tested take-off lever power and displacement, a kind of structure of new 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, and it belongs to electric hydrostatic action device technical field.
Background technology：
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 for realizing power-by-wire, intellectual material have the characteristics that small volume, energy density are high, response is fast, constantly quilt
Applied in the design and manufacture of actuator.But the shortcomings that intellectual material is that displacement is too small, single displacement is only micron order.Cause
How this, realize the displacement equations of intellectual material, and the development to the electric hydrostatic actuator of intellectual material driving is significant.
In electric hydrostatic actuator, passive type reversal valve is used mostly, 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 both sides fluid.But passive valve type electricity hydrostatic actuator meeting
Limited by passive valve block switching frequency so as to which high frequency can not be accomplished, output flow is restricted.
In intellectual material electricity hydrostatic actuator, the pass between the displacement of correct understanding input and the flow of output, pressure
System can preferably recognize the inside principle of actuator, therefore can be with synchronously tested intellectual material while actuator works
Displacement is significant with power to the inside principle of understanding actuator, the service behaviour of raising actuator.
The content 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 height 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 turn
Parallel operation, pump head, hydraulic cylinder, replaceable taper tube module；
Intellectual material driving electricity-machine converter, which includes shell, is installed on the first intellectual material annular in shell stacks
With the second intellectual material annular stack, be installed on the pretension end cap of shell upper end, be installed on the base of shell lower end, be installed on it is pre-
The take-off lever of tight cover internal, the guide plate being installed on below take-off lever, stack and second installed in the first intellectual material annular
Intellectual material annular stack between u-shaped sleeve, the precompressed disc spring between pretension end cap and take-off lever, installed in output
Test extension bar and measuring head on bar；
The replaceable taper tube module includes oil path block, the first cylindrical Taper Pipe and second being 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 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 surface is connected with pump head, upper surface and liquid
Cylinder pressure is connected.
Further, the pretension end cap is threadedly coupled with shell upper end internal face, guide plate and outer casing inner wall face screw thread
Connection, the base are installed on shell lower end by bolt mode, and take-off lever contacts with guide plate inner wall surface face, the output
Bar lower surface stacks upper end plane-plane contact with the second intellectual material annular, and the second intellectual material annular stacks lower surface and u-shaped set
Lower end plane-plane contact in cylinder, the outer upper surface of the u-shaped sleeve stack plane-plane contact, the second intelligence with the second intellectual material annular
Material annular stacks to be contacted with base upper surface.
Further, the pretension end cap, which compresses precompressed disc spring in the case where screwing, makes it produce precompression, and pressure passes
The take-off lever of lower end is passed, take-off lever stacks second intellectual material annular of the pressure transmission to its lower end, makes the second intelligent material
Material annular stacks stacks the u-shaped sleeve that residual compression is passed to its underpart with certain precompression, the second intellectual material annular
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
Pass to the first intellectual material annular to stack, the first intellectual material annular is stacked with certain precompression, the first intelligent material
Material annular stacks lower end and is in contact with base, is stacked simultaneously with the second intellectual material annular so that the first intellectual material annular stacks
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 stacks to be stacked in same-phase sine bias voltage with the second intellectual material annular
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 stacks itself can also extend while following u-shaped sleeve to move upwards, to reach increase motor converter
Displacement.
Further, in the u-shaped sleeve lower end You Liangge holes, the hole of an arc-shaped is at the edge of u-shaped sleeve bottom end
On, in order to which the wire that the second intellectual material annular stacks is drawn and then is connected with power supply；One circular hole is in centre, a circular hole
At the center of u-shaped sleeve bottom end, make to be connected on take-off lever test extension bar from this circular hole stretch out and with the test of outside
Head is connected
Further, screwed hole is provided with the take-off lever lower surface, the test extension bar upper and lower ends have rotation direction phase
Same screw thread, the screwed hole of take-off lever lower surface are connected with test extension bar threaded upper ends, the spiral shell that the measuring head upper end is set
Pit is connected with the screw thread of test extension bar lower end, and the displacement of the take-off lever output is identical with the displacement of measuring head, to cause
Synchronously detected in the state of actuator work the first intellectual material annular stack stacked with the second intellectual material annular it is common defeated
The displacement gone out.
Further, the shell upper end is provided with pump cover, and pump cover upper end is provided with pump head, pacified between pump cover and pump head
Equipped with flexible sheet, piston and piston head are installed in the flexible sheet top and bottom respectively, are stayed between the pump head and piston
There is pump chamber；
The pump cover lower end inner wall surface is threadedly coupled with shell upper end outer wall surface, pump cover upper end inner wall surface and pump head
Lower end outer wall table plane-plane 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-hand member of the oil path block is connected to accumulator, and pump head is connected 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 provided with sealing ring；
The oil path block lower end and pump head fasten with 6 Allen bolts, and oil path block upper end and hydraulic cylinder are with 4 six
Hex bolt is connected, and the 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 provided between the upper end and oil path block of shape Taper Pipe and the second cylindrical Taper Pipe
It is connected 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
Thrust is formed respectively between lid and the second cylindrical Taper Pipe, is provided between the first Taper Pipe lid and the first cylindrical Taper Pipe close
Seal, sealing ring is provided 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 sector hole is isodiametric hole, interlude
Hole is the hole that diameter linearly diminishes from top to bottom, and lower sector hole is isodiametric hole, the upper sector hole of the first cylindrical Taper Pipe it is straight
Footpath is smaller than the diameter of the lower sector 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 sector hole is isodiametric hole, interlude
Hole is that diameter linearly becomes big hole from top to bottom, and lower sector hole is isodiametric hole, the upper sector hole of the second cylindrical Taper Pipe it is straight
Footpath is bigger than the diameter of the lower sector hole of the second cylindrical Taper Pipe.
Further, the take-off lever upper part is cylindrical structure, and is drilled with screwed hole, and center section is disc
Structure, and four cylindrical holes are drilled with around, lower part is cylindrical structural, and is drilled with screw thread in bottom cylindrical center
Hole, two screwed holes are drilled with the guide plate.
The present invention has the advantages that：First intellectual material annular stacks and moral in the electro-hydraulic actuator of valveless of the present invention
Auspicious intellectual material annular stacks when extending at the same time, and the elongation that the first intellectual material annular stacks can drive u-shaped sleeve to transport upwards
Dynamic, the second intellectual material annular in u-shaped sleeve inner stacks itself can also stretch while following u-shaped sleeve to move upwards
Long, the second intellectual material annular stacks drives reciprocating motion of the pistons by take-off lever, so as to reach the position of increase motor converter
The purpose of shifting；The electro-hydraulic actuator of valveless provided by the invention, the test extension bar being connected through a screw thread in the lower end of take-off lever with
And with test extension bar lower end with the measuring head being threadedly coupled can while actuator works synchronously tested take-off lever position
Move, so as to accurately understand the working condition of actuator, that is, improve the synchronism of test.
Brief description of the drawings：
Technical scheme in order to illustrate the embodiments of the present invention more clearly, it will use below required in embodiment
Accompanying drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for ability
For the those of ordinary skill of domain, on the premise of not paying creative work, it can also be obtained according to these accompanying drawings other attached
Figure.
Fig. 1 is the structural representation of the electro-hydraulic actuator of valveless provided in an embodiment of the present invention.
Fig. 2 is the structural representation of take-off lever provided in an embodiment of the present invention and piston coupling structure.
Fig. 3 is the structural representation 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 provided in an embodiment of the present invention and the second conical pipe.
Fig. 6 is the schematic three dimensional views of sleeve provided in an embodiment of the present invention.
Fig. 7 is the structural representation 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.
Embodiment：
The present invention is further illustrated below in conjunction with the accompanying drawings.
As shown in figure 1, the present invention provides a kind of electro-hydraulic actuator of valveless, including：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
The base 1 that stack 3 with the second intellectual material annular, is installed on the pretension end cap 9 of the upper end of shell 5, is installed on the lower end of shell 5, peace
Loaded on the take-off lever 7 inside pretension end cap 9, it is installed on the guide plate 6 of the lower section of take-off lever 7, installed in the first intellectual material annular
Stack 2 and second intellectual material annular stack the u-shaped sleeve 4 between 3, the precompressed between pretension end cap 9 and take-off lever 7
Disc spring 8, test extension bar 21 and measuring head 22 on take-off lever 7.
Replaceable taper tube module includes oil path block 17, the first cylindrical Taper Pipe 14 being embedded in inside oil path block 17 and the
Two cylindrical Taper Pipes 16, the first Taper Pipe lid 13 being connected with oil path block 17 and the second Taper Pipe lid 15, the first cylindrical Taper Pipe 14 with
First Taper Pipe lid 13, the second cylindrical Taper Pipe 16 compress respectively with the second Taper Pipe lid 15.The lower surface of oil path block 17 and pump head 19
It is connected, upper surface is connected with hydraulic cylinder 18.
Pretension end cap 9 is threadedly coupled with the upper end internal face of shell 5, and guide plate 6 is threadedly coupled with the internal face of shell 5, base 1
The lower end of shell 5 is installed on by bolt mode, take-off lever 7 contacts with the inner wall surface face of guide plate 6, the lower surface of take-off lever 7 and the
Two intellectual material annulars stack 3 upper end plane-plane contacts, and the second intellectual material annular stacks 3 lower surfaces and lower surface in u-shaped sleeve 4
Face contacts, and 4 outer upper surface of u-shaped sleeve stacks plane-plane contact on 3 with the second intellectual material annular, and the second intellectual material annular stacks
3 with the upper surface of base 1.
Pretension end cap 9, which compresses precompressed disc spring 8 in the case where screwing, makes it produce precompression, and pressure transmission is to the defeated of lower end
Second intellectual material annular of the pressure transmission to its lower end is stacked 3, stacks the second intellectual material annular by rod 7, take-off lever 7
3 have certain precompression, and the second intellectual material annular stacks the inside of the 3 u-shaped sleeves 4 that residual compression is passed to its underpart, u
Jacket cylinder 4 stacks the part of 2 upper-end contact by its external margin and the first intellectual material annular by pressure transmission to first
Intellectual material annular stacks 2, and the first intellectual material annular is stacked 2 has certain precompression, and the first intellectual material annular is folded
The lower end of heap 2 is in contact with base 1, stacks 3 so that the first intellectual material annular stacks 2 with the second intellectual material annular while has
There is precompression.
Screwed hole is provided with the lower surface of take-off lever 7, the test upper and lower ends of extension bar 21 have rotation direction identical screw thread, take-off lever
7 lower surfaces have screwed hole to be connected with the test threaded upper ends of extension bar 21, screwed hole and the test extension bar 21 of the upper end of measuring head 22
The screw thread of lower end is connected, and the displacement that take-off lever 7 exports is identical with the displacement of measuring head 22, can be in the state of actuator work
The first intellectual material annular of synchronous detection stack 2 and second intellectual material annular stack 3 displacements exported jointly.
The upper end of shell 5 is provided with pump cover 20, and the upper end of pump cover 20 is provided with pump head 19, is installed between pump cover 20 and pump head 19
Flexible diaphragm 10, piston 11 and piston head 12 are installed in the top and bottom of flexible sheet 10 respectively, between pump head 19 and piston 11
Leave pump chamber.
The lower end inner wall surface of pump cover 20 is threadedly coupled with the upper end outer wall surface of shell 5, the upper end inner wall surface of pump cover 20 and pump
First 19 lower end outer wall table plane-plane 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-hand member of oil path block 17 is connected to accumulator, and pump head 19 is connected 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 provided with sealing ring.
The lower end of oil path block 17 is fastened with pump head 19 with 6 Allen bolts, and the upper end of oil path block 17 is with hydraulic cylinder 18 with 4
Allen bolt is connected, and the first cylindrical 14 and second cylindrical Taper Pipe 16 of Taper Pipe is embedded in inside oil path block 17, the first circle
Sealing ring, the first Taper Pipe lid 13 and second are provided between the upper end of 14 and second cylindrical Taper Pipe 16 of cylindricality Taper Pipe and oil path block 17
Taper Pipe lid 15 is connected 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 cylinder are bored
Thrust, the first Taper Pipe lid 13 and the first cylinder are formed respectively between pipe 14, the second Taper Pipe lid 15 and the second cylindrical Taper Pipe 16
Sealing ring is provided between shape Taper Pipe 14, sealing ring is provided between the second Taper Pipe lid 15 and the second cylindrical Taper Pipe 16.
The hole at the first cylindrical center of Taper Pipe 14 is divided into three sections, and upper sector hole is isodiametric hole, middle sector hole be on to
The hole that lower diameter linearly diminishes, lower sector hole are isodiametric holes, and the diameter of the upper sector hole of the first cylindrical Taper Pipe 14 is than first
The diameter of the lower sector hole of cylindrical Taper Pipe 14 is small.
The hole at the second cylindrical center of Taper Pipe 16 is divided into three sections, and upper sector hole is isodiametric hole, middle sector hole be on to
Lower diameter linearly becomes big hole, and lower sector hole is isodiametric hole, and the diameter of the upper sector hole of the second cylindrical Taper Pipe 16 is than second
The diameter of the lower sector hole of cylindrical Taper Pipe 16 is big.
The upper part of take-off lever 7 is cylindrical structure, and is drilled with screwed hole, and center section is disc-shaped structure, and in week
Enclose and be drilled with four cylindrical holes, lower part is cylindrical structural, and is drilled with screwed hole, guide plate 6 in bottom cylindrical center
On be drilled with two screwed holes.
The electro-hydraulic actuator of valveless of the present invention, substantially operation principle include：The inwall that first intellectual material annular stacks 2 is straight
The outer diameter that footpath stacks 3 than the second intellectual material annular is big, the first intellectual material annular stack 2 and second intellectual material annular
Stack 3 to be installed in shell 5, 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, the first intellectual material annular is stacked 2 and the second intellectual material ring
Shape stacks change of 3 generations using pre-stretched amount as initial position and stretched., 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 extend while motion, and so as to reach the purpose of displacement equations, now it is defeated to stack 3 promotions for the second intellectual material annular
Rod 7 moves up, and piston 11 compresses pump chamber, promotes fluid motion, the first cylindrical 14 and second cylindrical Taper Pipe 16 of Taper Pipe is simultaneously
It is fuel-displaced, but the two due to flow resistance it is different so that exporting side than entering hydraulic cylinder 18 into the inlet side of hydraulic cylinder 18
Flow is more, and hydraulic cylinder 18 can be stored in the accumulator being connected with oil path block 17 toward a lateral movement, unnecessary oil, when the first intelligence
When material annular stacks 2 shortening, because 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 and follow u-shaped sleeve 4 itself also while moving downward under the pressure of precompressed disc spring 8
Shorten, reach the purpose of displacement equations, now take-off lever 7 moves downward with piston 11, and pump chamber expands, and produces local true
Sky, fluid is set to flow back to pump chamber, the oil return simultaneously of the first cylindrical 14 and second cylindrical Taper Pipe 16 of Taper Pipe, but the two hinders due to flowing
Power it is different so as to the inlet side of hydraulic cylinder 18 than hydraulic cylinder 18 export side return to pump chamber flow it is few, so as in pump chamber oil return
The direction of motion of hydraulic cylinder 18 is identical when the direction of motion of hydraulic cylinder 18 presses oil with pump chamber, be stored in accumulator oil while
Pump chamber is released back to, so as to which hydraulic cylinder 18 is always to same lateral movement.
Precompression applies and adjustment structure：As shown in Fig. 2 during mechanical adjustment, rotation pretension end cap 9, end cap passes through compression
Precompressed disc spring 8 produces precompression, take-off lever 7 of the pressure transmission to lower end, and take-off lever 7 gives pressure transmission the second intelligence of its lower end
Energy material annular stacks 3, and 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 transmission is stacked 2 by the part for stacking 2 upper-end contact to the first intellectual material annular, 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 base 1, so that the first intellectual material ring
Shape stack 2 and second intellectual material annular stack 3 while there is precompression.
Increase the displacement structure of motor converter：As shown in Fig. 2 the first intellectual material annular stacks 2 and the second intelligent 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 can drive
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 to transport upwards
Itself it can also be extended while dynamic, so as to reach the purpose of the displacement of increase motor converter.
Take-off lever and piston coupling structure：As shown in Fig. 2 by being drilled with screwed hole on take-off lever 7, the lower end of piston head 12 has
Detent, it is bolted the positioning precision that can effectively ensure that piston 11.Also, existing ultra-magnetic telescopic electricity is quiet
Its take-off lever of liquid actuator is used with piston and is threadedly coupled, it is impossible to ensures the positioning precision of piston, the present invention bores on take-off lever 7
There is screwed hole, there is detent the lower end of piston 11, is bolted the positioning precision that can effectively ensure that piston 11.
Synchronism detection structure：As shown in Figure 2 and Figure 6, in the lower end You Liangge holes of u-shaped sleeve 4, the hole of an arc-shaped is in u
On the edge of type sleeve bottom end, be for convenience the second intellectual material annular stack 3 wire draw so that be connected with power supply；One
Individual circular hole at the center of u-shaped sleeve bottom end, the test extension bar 21 for making to be connected on take-off lever 7 stretched out from this circular hole and with it is outer
The measuring head 22 in face is connected, and is mounted with to test extension bar 21 and measuring head 22 below take-off lever 7, realizes by measuring head 22
The size of take-off lever 7 and the output displacement of piston 11 can be known while actuator works, so as to which accurately understanding acts device
Service behaviour.
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 14 and second cylindrical Taper Pipe 16 of Taper Pipe, the first cylindrical cylinder of Taper Pipe 14 and second shown in Fig. 5
The circular groove of 4 a quarters is arranged respectively at the bottom of Taper Pipe 16, and this is for convenience by the first cylindrical Taper Pipe 14 and second
Cylindrical Taper Pipe 16 disassembles from oil path block 17.The upper end of first cylindrical 14 and second cylindrical Taper Pipe 16 of Taper Pipe and oil
Sealing ring is provided between road block 17, the first Taper Pipe lid 13 and the lower end of the second Taper Pipe lid 15 and oil path block 17 pass through interior hexagonal
Sunk screw connects, 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
Thrust is formed between 16 respectively, sealing ring, the second Taper Pipe lid are provided between the first Taper Pipe lid 13 and the first cylindrical Taper Pipe 14
15 and second are provided with sealing ring between cylindrical Taper Pipe 16, the first cylindrical 14 and first cylindrical Taper Pipe 16 of Taper Pipe have it is multiple,
Its angle, length and opening diameter have multiple, can be substituted for it when the first Taper Pipe lid 13 and the second Taper Pipe lid 15 are pulled down
The conical pipe of his size, so as to improve cylindrical Taper Pipe interchangeability.
In electric hydrostatic actuator, passive type reversal valve is used mostly, 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 both sides fluid.But passive valve type electricity hydrostatic
Actuator can be limited by passive valve block switching frequency so as to accomplish high frequency, and output flow is restricted.And conical pipe
The structure of valveless can effectively avoid the limitation of valve block intrinsic frequency, improve the overall working frequency of actuator.
Described above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, some improvement can also be made under the premise without departing from the principles of the invention, and these improvement also should be regarded as the present invention's
Protection domain.
Claims (10)
- A kind of 1. electro-hydraulic actuator of valveless, it is characterised in that：Including intellectual material driving electricity-machine converter, pump head (19), liquid 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 pretension end cap (9) for being installed on shell (5) upper end, are installed under shell (5) The base (1) at end, be installed on the internal take-off lever (7) of pretension end cap (9), the guide plate (6) being installed on below take-off lever (7), (2) are stacked installed in the first intellectual material annular and the second intellectual material annular stacks u-shaped sleeve (4) between (3), is arranged on Precompressed disc spring (8) between pretension end cap (9) and take-off lever (7), the test extension bar (21) on take-off lever (7) and survey Try head (22)；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 cylindrical 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 The first cylindrical Taper Pipe (14) is stated to press respectively with the second Taper Pipe lid (15) with the first Taper Pipe lid (13), the second cylindrical Taper Pipe (16) Tightly, oil path block (17) lower surface is connected with pump head (19), and upper surface is connected with hydraulic cylinder (18).
- 2. the electro-hydraulic actuator of valveless as claimed in claim 1, it is characterised in that：The pretension end cap (9) and shell (5) upper end Internal face is threadedly coupled, and guide plate (6) is threadedly coupled with shell (5) internal face, and the base (1) is installed on by bolt mode Shell (5) lower end, take-off lever (7) contact with guide plate (6) inner wall surface face, take-off lever (7) lower surface and the second intelligence Material annular stacks (3) upper end plane-plane contact, and the second intellectual material annular stacks (3) lower surface and u-shaped sleeve (4) interior lower surface Face contacts, and the outer upper surface of the u-shaped sleeve (4) stacks plane-plane contact on (3), the second intellectual material with the second intellectual material annular Annular stacks (3) and base (1) upper surface.
- 3. the electro-hydraulic actuator of valveless as described in claim 1 or 2, it is characterised in that：The pretension end cap (9) is what is screwed In the case of compress precompressed disc spring (8) and its is produced precompression, take-off lever (7) of the pressure transmission to lower end, take-off lever (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 stacked (3) has certain precompressed Power, the second intellectual material annular stack the inside that (3) pass to residual compression in the u-shaped sleeve (4) of its underpart, the u-shaped set Cylinder (4) stacks the part of the upper-end contact of (2) by its external margin and the first intellectual material annular by pressure transmission to first Intellectual material annular stacks (2), and the first intellectual material annular is stacked (2) has certain precompression, the first intellectual material ring Shape stacks (2) lower end and is in contact with base (1), so that the first intellectual material annular stacks (2) and the second intellectual material annular is folded Heap (3) while there is precompression.
- 4. the electro-hydraulic actuator of valveless as described in claim 1 or 2, it is characterised in that：The first intellectual material annular is folded The outer diameter that the inner diameter of heap (2) stacks (3) than the second intellectual material annular is big, and the first intellectual material annular stacks (2) (3) are stacked under the driving of same-phase sine bias voltage with the second intellectual material annular, the first intellectual material annular stacks (2) elongation drives u-shaped sleeve (4) to move upwards, and the second intellectual material annular internal in u-shaped sleeve (4) stacks (3) and existed Itself it can also be extended while following u-shaped sleeve (4) to move upwards, to reach the displacement of increase motor converter.
- 5. 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 with power supply；One circular hole is stretched in the center of u-shaped sleeve bottom end, the test for making to be connected on take-off lever (7) Rod (21) stretches out from this circular hole and is connected with the measuring head (22) of outside.
- 6. the electro-hydraulic actuator of valveless as described in claim 1 or 2, it is characterised in that：Set in the take-off lever (7) lower surface Have a screwed hole, described test extension bar (21) upper and lower ends have a rotation direction identical screw thread, the screwed hole of take-off lever (7) lower surface with Test extension bar (21) threaded upper ends are connected, the screwed hole that measuring head (22) upper end is set and test extension bar (21) lower end Screw thread be connected, the displacement of the take-off lever (7) output is identical with the displacement of measuring head (22), to cause what is worked in actuator The first intellectual material annular is synchronously detected under state stack (2) and the second intellectual material annular and stack the displacement that (3) export jointly.
- 7. the electro-hydraulic actuator of valveless as claimed in claim 1, it is characterised in that：Shell (5) upper end is provided with pump cover (20), pump cover (20) upper end is provided with pump head (19), and flexible sheet (10), institute are provided 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 leave pump chamber；Pump cover (20) the lower end inner wall surface is threadedly coupled with shell (5) upper end outer wall surface, pump cover (20) upper end inwall table Face and pump head (19) lower end outer wall table plane-plane 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 and piston (11) and piston head (12)；The right-hand member of the oil path block (17) is connected to accumulator, and pump head (19) is connected 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 provided with sealing ring；Oil path block (17) lower end is fastened with pump head (19) with 6 Allen bolts, oil path block (17) upper end and hydraulic cylinder (18) it is connected with 4 Allen bolts, the first cylindrical Taper Pipe (14) and the second cylindrical Taper Pipe (16) are embedded in oil Road block (17) is internal, between the first cylindrical Taper Pipe (14) and the upper end of the second cylindrical Taper Pipe (16) and oil path block (17) Provided with sealing ring, the lower end of the first Taper Pipe lid (13) and the second Taper Pipe lid (15) and oil path block (17) passes through interior hexagonal countersunk head Mode connects for screw, 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 Thrust is formed respectively between pipe (16), and sealing is provided between the first Taper Pipe lid (13) and the first cylindrical Taper Pipe (14) Circle, sealing ring is provided between the second Taper Pipe lid (15) and the second cylindrical Taper Pipe (16).
- 8. the electro-hydraulic actuator of valveless as claimed in claim 7, it is characterised in that：First cylindrical Taper Pipe (14) center Hole is divided into three sections, and upper sector hole is isodiametric hole, and middle sector hole is the hole that diameter linearly diminishes from top to bottom, and lower sector hole is The hole of diameter, the diameter of the diameter of the upper sector hole of the first cylindrical Taper Pipe (14) than the lower sector hole of the first cylindrical Taper Pipe (14) It is small.
- 9. the electro-hydraulic actuator of valveless as claimed in claim 8, it is characterised in that：Second cylindrical Taper Pipe (16) center Hole is divided into three sections, and upper sector hole is isodiametric hole, and middle sector hole is that diameter linearly becomes big hole from top to bottom, and lower sector hole is The hole of diameter, the diameter of the diameter of the upper sector hole of the second cylindrical Taper Pipe (16) than the lower sector hole of the second cylindrical Taper Pipe (16) Greatly.
- 10. the electro-hydraulic actuator of valveless as claimed in claim 9, it is characterised in that：Take-off lever (7) upper part is cylinder Type structure, and screwed hole is drilled with, center section is disc-shaped structure, and four cylindrical holes are drilled with around, and lower part is Cylindrical structural, and screwed hole is drilled with bottom cylindrical center, it is drilled with two screwed holes on the guide plate (6).
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| CN107339282B (en) | 2019-06-04 |
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