CN108071624A - A kind of integrated hydraulic cylinder - Google Patents
A kind of integrated hydraulic cylinder Download PDFInfo
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- CN108071624A CN108071624A CN201710735619.0A CN201710735619A CN108071624A CN 108071624 A CN108071624 A CN 108071624A CN 201710735619 A CN201710735619 A CN 201710735619A CN 108071624 A CN108071624 A CN 108071624A
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- hydraulic stem
- cylinder body
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- hydraulic
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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
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1409—Characterised by the construction of the motor unit of the straight-cylinder type with two or more independently movable working pistons
-
- 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
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
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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 invention belongs to hydraulic cylinder technical fields, provide a kind of integrated hydraulic cylinder, including：Cylinder body bottom offers the inlet and the cylinder body of liquid outlet that are connected with hydraulic pump；Cylinder end caps arranged on cylinder body openend；Hydraulic stem, hydraulic stem pass through end cap through hole, and hydraulic rod end is equipped with hydraulic stem disk, and hydraulic stem disk is arranged in cylinder body, and hydraulic stem disk through hole is offered on hydraulic stem disk；The first cavity is formed between cylinder end caps and hydraulic stem disk and the side wall of cylinder body；In cylinder body and arranged on the power piston between hydraulic stem disk and cylinder body bottom, central cavity is formed between power piston and hydraulic stem disk and the side wall of cylinder body, the 4th cavity is formed between power piston and cylinder body bottom and the side wall of cylinder body；First cavity, central cavity and the 4th cavity are filled with liquid.Integrated hydraulic cylinder can provide the driving force of active in dynamic state, and passive Telescopic can be realized in non-power state.
Description
Technical field
The invention belongs to hydraulic cylinder technical fields, are to be related to a kind of integrated hydraulic cylinder more specifically.
Background technology
During industrial control, hydraulic control system is largely used, and hydraulic cylinder is then hydraulic control system
The core element of system.Hydraulic cylinder is that a kind of hydraulic pressure that hydraulic energy is changed into mechanical energy, machinery is made to realize reciprocating motion performs member
Part, transmission stable working, reliability are high.Conventional cylinder includes cylinder body, piston and piston rod, is provided on cylinder body into fuel-displaced
Mouthful, by the disengaging of hydraulic oil, realize the movement of piston and piston rod, then control function is realized by external member, so as to
To provide the driving force of active.
In the actual production process, it usually needs the hydraulic cylinder of diversified forms is completed to move accordingly, however traditional liquid
The forms of motion of cylinder pressure is relatively simple, can not realize passive Telescopic while the driving force of active is provided.
More than deficiency, have much room for improvement.
The content of the invention
It is an object of the invention to provide a kind of integrated hydraulic cylinder, to solve conventional cylinder in the prior art
Forms of motion is relatively simple, the technical issues of can not realizing passive Telescopic while the driving force of active is provided.
To achieve the above object, the technical solution adopted by the present invention is：A kind of integrated hydraulic cylinder is provided, including：
Cylinder body, the cylinder body bottom of the cylinder body offer inlet and liquid outlet for being connected with hydraulic pump, the cylinder
The cylinder body openend of body is equipped with opening；
Cylinder end caps, the cylinder end caps are sealed in the cylinder body openend, and the cylinder end caps offer end cap through hole；
Hydraulic stem, the hydraulic stem pass through the end cap through hole, and end is equipped with hydraulic stem disk, the hydraulic stem disk
In the cylinder body, the hydraulic stem disk offers hydraulic stem disk through hole, the circumference of the hydraulic stem disk with it is described
The interior wall seamless of cylinder body is slidably connected；It is formed between the cylinder end caps and the hydraulic stem disk and the side wall of the cylinder body
First cavity；
Power piston, the power piston are arranged in the cylinder body and arranged on the hydraulic stem disk and the cylinder body bottom
Between, the circumference of the power piston and the interior wall seamless of the cylinder body are slidably connected, the power piston and the hydraulic stem
Central cavity, the power piston and the cylinder body bottom and the cylinder body are formed between the side wall of disk and the cylinder body
Side wall between formed the 4th cavity；
First cavity, the central cavity and the 4th cavity are filled with liquid.
Further, further include：
Motor, the hydraulic stem is hollow, and the motor is arranged in the hydraulic stem, and the motor is equipped with motor shaft；
Catch, the catch is arranged between the hydraulic stem disk and the power piston and the catch passes through the electricity
Arbor is connected with the motor, and the motor can drive the catch to rotate, and the catch leads to compared with the hydraulic stem disk
The position in hole offers catch through hole, and the registration of the catch through hole and the hydraulic stem disk through hole passes through the motor tune
Section.
Further, the catch through hole is identical with the size of the hydraulic stem disk through hole.
Further, the catch is equipped with catch flange, and the catch flange is arranged in the hydraulic stem.
Further, sliding bearing, the outer wall of the sliding bearing and the hydraulic stem are arranged on the catch flange
Interior wall seamless be slidably connected.
Further, one end that the hydraulic stem is arranged on outside the cylinder body is equipped with hydraulic pressure stem cover, the hydraulic pressure stem cover
It is equipped with the end cap connecting portion being attached with external equipment.
Further, further include：
Free-piston, the free-piston are arranged between the catch and the power piston, the circle of the free-piston
All interior wall seamless with the cylinder body are slidably connected；
The second cavity, second cavity are formed between the free-piston and the side wall of the catch and the cylinder body
It is interior filled with liquid；
The 3rd cavity of formation between the free-piston and the side wall of the power piston and the cylinder body, the described 3rd
Chamber is filled with air；
Bottom spring, the bottom spring be arranged on the 3rd cavity in, and the both ends of the bottom spring respectively with institute
Free-piston is stated to connect with the power piston.
Further, inner spring is further included, the inner spring is sheathed on the hydraulic stem, and the inner spring is arranged on institute
It states between cylinder end caps and the hydraulic stem disk.
Further, further include：
Adjusting nut, the adjusting nut are sheathed on the hydraulic stem and outside the cylinder bodies, the adjusting nut
It can be slided along the hydraulic stem；
Outer spring, the outer spring be sheathed on the hydraulic stem and arranged on the cylinder end caps and the adjusting nut it
Between.
Further, the cylinder body bottom is additionally provided with the bottom connecting portion being attached with external equipment.
A kind of advantageous effect of integrated hydraulic cylinder provided by the invention is：Due to cylinder body, hydraulic stem and power piston
It cooperates so that integrated hydraulic cylinder can provide the driving force of active, and the energy in non-power state in dynamic state
It realizes passive Telescopic, it is achieved thereby that same hydraulic cylinder can not only provide the driving force of active, but also can realize and passively stretch
Contracting function.
Description of the drawings
It to describe the technical solutions in the embodiments of the present invention more clearly, below will be to embodiment or description of the prior art
Needed in attached drawing be briefly described, it should be apparent that, the accompanying drawings in the following description be only the present invention some
Embodiment, for those of ordinary skill in the art, without creative efforts, can also be attached according to these
Figure obtains other attached drawings.
Fig. 1 is the cross-sectional view of integrated hydraulic cylinder provided in an embodiment of the present invention；
Fig. 2 is a kind of structure diagram of integrated hydraulic cylinder provided in an embodiment of the present invention；
Fig. 3 is another structure diagram of integrated hydraulic cylinder provided in an embodiment of the present invention；
Fig. 4 is the partial structural diagram of integrated hydraulic cylinder provided in an embodiment of the present invention；
Fig. 5 is the configuration schematic diagram of integrated hydraulic cylinder provided in an embodiment of the present invention.
Wherein, each reference numeral in figure：
11- cylinder bodies；111- cylinder bodies bottom；112- cylinder bodies openend；
113- inlets；114- liquid outlets；115- bottoms connecting portion；
12- cylinder end caps；121- end cap through holes；122- cover flanges；
21- hydraulic stems；211- hydraulic stem disks；2111- hydraulic stem disk through holes；
22- motors；221- motor shafts；222- catch；
2221- catch through holes；2222- catch flange 23- sliding bearings；
24- hydraulic pressure stem covers；241- end cap connecting portions；31- power pistons；
32- free-pistons；33- bottoms spring；34- inner springs；
35- outer springs；351- adjusting nuts；The first cavitys of 41-；
The second cavitys of 42-；The 3rd cavitys of 43-；The 4th cavitys of 44-.
Specific embodiment
In order to which technical problems, technical solutions and advantages to be solved are more clearly understood, tie below
Accompanying drawings and embodiments are closed, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only used
To explain the present invention, it is not intended to limit the present invention.
It should be noted that when element is referred to as " being arranged at " another element, it can be directly on another element
Or it is connected on another element.When an element is known as " being connected to " another element, it can directly be connected
It is connected to another element or is indirectly connected on another element.In addition, term " first ", " second " are only used for description mesh
, and it is not intended that instruction or hint relative importance or the implicit quantity for indicating indicated technical characteristic.It limits as a result,
Surely there is " first ", one or more this feature can be expressed or be implicitly included to the feature of " second ".The present invention's
In description, " multiple " are meant that two or more, unless otherwise specifically defined.
It please refers to Fig.1, Fig. 4 and Fig. 5, a kind of integrated hydraulic cylinder, including cylinder body 11, cylinder end caps 12, hydraulic stem 21 and dynamic
Power piston 31.The cylinder body bottom 111 of cylinder body 11 offers the inlet 113 being connected with hydraulic pump and liquid outlet 114, cylinder body
11 cylinder body openend 112 is equipped with opening；Cylinder end caps 12 are sealed in cylinder body openend 112, and cylinder end caps 12 offer end cap
Through hole 121；Hydraulic stem 21 passes through end cap through hole 121, and the outer diameter of hydraulic stem 21 matches with 121 diameter of end cap through hole, i.e. liquid
Compression bar 21 with end cap through hole 121 is seamless is slidably connected, the end of hydraulic stem 21 is equipped with hydraulic stem disk 211, hydraulic stem disk 211
In cylinder body 11, hydraulic stem disk 211 offers hydraulic stem disk through hole 2111, the circumference and cylinder body of hydraulic stem disk 211
11 interior wall seamless is slidably connected；The first chamber is formed between cylinder end caps 12 and the side wall of hydraulic stem disk 211 and cylinder body 11
Body 41；Power piston 31 is arranged in cylinder body 11 and is arranged between hydraulic stem disk 211 and cylinder body bottom 111, power piston 31
The interior wall seamless of circumference and cylinder body 11 is slidably connected, between power piston 31 and the side wall of hydraulic stem disk 211 and cylinder body 11
Central cavity is formed, the 4th cavity 44 is formed between power piston 31 and the side wall of cylinder body bottom 111 and cylinder body 11；First chamber
Body 41, central cavity and the 4th cavity 44 are filled with liquid.
The operation principle of integrated hydraulic cylinder provided in this embodiment is as follows：
It is hydraulically full in the first cavity 41, central cavity and the 4th cavity 44 first；
During non-power state, hydraulic pressure air pump inoperative, inlet 113 and liquid outlet 114 are closed completely, so that the 4th
Amount of liquid in cavity 44 is consistent, and with cylinder body 11 relative motion does not occur for power piston 31, when hydraulic stem 21 is pressed
During power, hydraulic stem 21 is moved to close to the direction of cylinder body bottom 111, so that hydraulic stem disk 211 is to close to power piston
31 direction movement, the volume of central cavity reduce, and the liquid in central cavity passes through hydraulic stem disk through hole 2111 to first
Cavity 41 flows, to adapt to the variation of the volume of central cavity；When 21 under tension of hydraulic stem, hydraulic stem 21 is to away from cylinder body bottom
The direction movement at end 111, so that hydraulic stem disk 211 is moved to the direction away from power piston 31, the appearance of central cavity
Product becomes larger, and the liquid in the first cavity 41 is flowed by hydraulic stem disk through hole 2111 to central cavity, to adapt to central cavity
Volume variation；
During dynamic state, hydraulic pump works, inlet 113 and liquid outlet 114 are opened and are connected with hydraulic pump, hydraulic pressure
Pump injects liquid by inlet 113 to the 4th cavity 44, and liquid increases the pressure of power piston 31 in the 4th cavity 44, into
And pressure of the power piston 31 to liquid in central cavity is increased, and then the in vivo liquid of center lumen is increased to hydraulic stem 21
Pressure, so as to which hydraulic stem 21 be promoted to be moved to the direction away from cylinder body bottom 111, the volume of the first cavity 41 becomes smaller, first
Liquid in cavity 41 is flowed by hydraulic stem disk through hole 2111 to central cavity, to adapt to the change of the volume of the first cavity 41
Change；When the liquid in the 4th cavity 44 flows out four cavitys 44 by liquid outlet 114, liquid lives to power in the 4th cavity 44
The pressure of plug 31 reduces, and then reduces pressure of the power piston 31 to liquid in central cavity, and then reduces central cavity
Interior liquid is to the pressure of hydraulic stem 21 so that liquid is more than liquid in central cavity to the pressure of hydraulic stem 21 in the first cavity 41
Body is to the pressure of hydraulic stem 21, so as to which hydraulic stem 21 be promoted to be moved to close to the direction of cylinder body bottom 111, the volume of central cavity
Become smaller, the liquid in central cavity is flowed by hydraulic stem disk through hole 2111 to the first cavity 41, to adapt to central cavity
Volume changes.
The advantageous effect so set is：Due to the mutual cooperation of cylinder body 11, hydraulic stem 21 and power piston 31 so that
Integrated hydraulic cylinder can provide the driving force of active in dynamic state, and passively flexible work(can be realized in non-power state
Can, it is achieved thereby that same hydraulic cylinder can not only provide the driving force of active, but also it can realize passive Telescopic.
Further, cylinder end caps 12 are equipped with cylinder end caps flange 122, when cylinder end caps 12 and cylinder body openend 112 are matched somebody with somebody
When closing connection, cylinder end caps flange 122 is placed in cylinder body 11, and the inner wall of the outer wall of cylinder end caps flange 122 and cylinder body 11 without
Seam is connected, and the diameter of cylinder end caps 12 is not less than the outer diameter of cylinder body 11.Cylinder body bottom 111, which is additionally provided with, to be used for and external equipment
The bottom connecting portion 115 of connection.
Further, integrated hydraulic cylinder provided in this embodiment further includes motor 22 and catch 222, and hydraulic stem 21 is hollow,
Motor 22 is arranged in hydraulic stem 21, and motor 22 is equipped with motor shaft 221；Catch 222 is arranged on hydraulic stem disk 211 and power piston 31
Between and catch 222 be connected by motor shaft 221 with motor 22, motor 22 can drive catch 222 to rotate, catch 222 compared with
The position of hydraulic stem disk through hole 2111 offers catch through hole 2221, catch through hole 2221 and hydraulic stem disk through hole 2111
Registration is adjusted by motor 22.The diameter of catch 222 is identical with the diameter of hydraulic stem disk 211, catch through hole 2221 and liquid
The size of compression bar disk through hole 2111 is identical.
It please refers to Fig.1 and Fig. 4, motor 22 can drive catch 222 rotate by motor shaft 221, so as to adjust catch
The registration of through hole 2221 and hydraulic stem disk through hole 2111, and then liquid is adjusted between the first cavity 41 and central cavity
Flowing velocity, and then the stretching speed of adjustable hydraulic stem 21, so as to play damping action：When catch through hole 2221 and hydraulic stem
When disk through hole 2111 is completely misaligned, the liquid in liquid and central cavity in the first cavity 41 can not mutually flow, from
And cause hydraulic stem 21 can not opposing cylinder 11 move；When catch through hole 2221 and hydraulic stem disk through hole 2111 are completely superposed
When, the resistance that the liquid in liquid and central cavity in the first cavity 41 mutually flows is minimum, when being moved so as to hydraulic stem 21
Resistance it is minimum, the stretching speed of hydraulic stem 21 is most fast；Catch through hole 2221 and the registration of hydraulic stem disk through hole 2111 are got over
Small, the resistance that the liquid in liquid and central cavity in the first cavity 41 mutually flows is bigger, the stretching speed of hydraulic stem 21
It is slower.
In the present embodiment, the identical hydraulic stem disk of 8 sizes is uniformly provided on the circumference of hydraulic stem disk 211 to lead to
Hole 2111, the circumference of catch 222 accordingly offer 8 identical catch of size compared with the position of hydraulic stem disk through hole 2111
Through hole 2221.
In other embodiments, the diameter of catch 222 can be slightly less than the diameter of hydraulic stem disk 211, on catch 222
Catch through hole 2221 is corresponding with the position of hydraulic stem disk through hole 2111.
Further, catch 222 is equipped with catch flange 2222, and catch flange 2222 is arranged in hydraulic stem 21, so that
Catch 222 can be preferably connected with hydraulic stem 21.Sliding bearing 23 is arranged on catch flange 2222, and sliding bearing 23 is interior
Footpath and the outer diameter of catch flange 2222 match, and the outer wall of sliding bearing 23 is arranged on the inner wall of hydraulic stem 21, and sliding bearing 23
The internal diameter of outer diameter and hydraulic stem 21 match.When opposing hydraulic bar 21 rotates under drive of the catch 222 in motor 22, slide
Bearing 23 can greatly reduce friction loss and surface abrasion, and stable working, reliable, noiseless.
Further, one end that hydraulic stem 21 is arranged on outside cylinder body 11 is equipped with hydraulic pressure stem cover 24, is set on hydraulic pressure stem cover 24
It is useful for the end cap connecting portion 241 being attached with external equipment.Motor 22 can be encapsulated in hydraulic stem by hydraulic pressure stem cover 24
In 21, on the one hand motor 22 can be protected, on the other hand but also integrated hydraulic cylinder appearance is more beautiful.
It please refers to Fig.1, Fig. 3 and Fig. 5, further, integrated hydraulic cylinder provided in this embodiment further includes free-piston 32
With bottom spring 33, free-piston 32 is arranged between catch 222 and power piston 31, circumference and the cylinder body 11 of free-piston 32
Interior wall seamless is slidably connected；The second cavity 42, the second chamber are formed between free-piston 32 and the side wall of catch 222 and cylinder body 11
Filled with liquid in body 42；The 3rd cavity 43 of formation between free-piston 32 and the side wall of power piston 31 and cylinder body 11, the 3rd
Filled with air in cavity 43；Bottom spring 33 be arranged on the 3rd cavity 43 in, and the both ends of bottom spring 33 respectively with free-piston
32 and power piston 31 connect.
The accumulation of energy of bottom spring 33 and the process to release energy are as follows：
Under non-power state, when hydraulic stem 21 is under pressure, hydraulic stem 21 is moved to close to the direction of cylinder body bottom 111
Dynamic, so that hydraulic stem disk 211 is moved to close to the direction of power piston 31,42 volume of the second cavity reduces, the
Pressure increase in two cavitys 42, so as to which free-piston 32 be promoted to be moved to the direction close to power piston 31, so as to compress bottom
Portion's spring 33, energy storage is in the bottom spring 33 compressed；When 21 under tension of hydraulic stem, hydraulic stem 21 is to away from cylinder
The direction movement of body bottom 111, so that hydraulic stem disk 211 is moved to the direction away from power piston 31, the second cavity
42 volume becomes larger, and the pressure in the second cavity 42 reduces, and bottom spring 33 is gradually replied, so as to which the energy that will be stored discharges,
Free-piston 32 is promoted to be moved to the direction away from power piston 31；
Under dynamic state, when hydraulic pump injects liquid by inlet 113 to the 4th cavity 44, in the 4th cavity 44
Liquid increases the pressure of power piston 31, and propulsion power piston 31 is moved to the direction away from cylinder body bottom 111, so as to compress
Bottom spring 33, energy storage is in the bottom spring 33 compressed；When the liquid in the 4th cavity 44 is flowed by liquid outlet 114
When going out four cavitys 44, liquid reduces the pressure of power piston 31 in the 4th cavity 44, and bottom spring 33 is gradually replied, so as to
The energy of storage is discharged, propulsion power piston 31 is moved to close to the direction of cylinder base 111.
Due to being full of air in the 3rd cavity 43, and telescopic bottom spring 33 is equipped in the 3rd cavity 43, therefore the
Three cavitys 43 are telescopic cavity, and the compression of one side bottom spring 33 and Recovery Process can play the role of accumulation of energy and release
The effect of energy, the compressibility of the 3rd cavity 43 of another aspect can solve hydraulic stem 21 to close to the side of cylinder body bottom 111
The problem of pressure caused by reducing to 42 volume of the second cavity during movement is excessive so that hydraulic stem 21 causes in telescopic process
Cylinder body 21 in the second cavity 42 variation it is adaptable, so as to play a protective role to integrated hydraulic cylinder.
Further, integrated hydraulic cylinder provided in this embodiment further includes inner spring 34, and inner spring 34 is sheathed on hydraulic stem
On 21, and inner spring 34 is arranged between cylinder end caps 12 and hydraulic stem disk 211.Since hydraulic stem 21 is to away from cylinder body bottom
Inner spring 34 can be compressed during 111 direction movement, energy storage is in the inner spring 34 compressed；Hydraulic stem 21 is to close to cylinder
Inner spring 34 is gradually replied during the direction movement of body bottom 111, so as to the energy release that will be stored, hydraulic stem 21 is promoted to move.
Therefore inner spring 34 can play the role of accumulation of energy and be released energy in the telescopic process of hydraulic stem 21.
It please refers to Fig.1, Fig. 2 and Fig. 5, further, integrated hydraulic cylinder provided in this embodiment further includes adjusting nut
351, adjusting nut 351 is sheathed on hydraulic stem 21 and outside cylinder body 11, adjusting nut 351 can be slided along hydraulic stem 21；Outside
Spring 35, outer spring 35 are sheathed on hydraulic stem 21 and arranged between cylinder end caps 12 and adjusting nuts 351.Due to adjusting nut
351 can slide along hydraulic stem 21, so as to adjust the initial compression length of outer spring 35, and then can adjust initial preload
Power.Since hydraulic stem 21 when being moved close to the direction of cylinder body bottom 111 to that can compress outer spring 35, energy storage is being compressed
Outer spring 35 in；The outer spring 35 when being moved to the direction away from cylinder body bottom 111 of hydraulic stem 21 is gradually replied, so as to store up
The energy release deposited, promotes hydraulic stem 21 to move.Therefore outer spring 35 can be played in the telescopic process of hydraulic stem 21 accumulation of energy and
The effect to release energy.
Integrated hydraulic cylinder provided in this embodiment can be used for the knee joint position of assistant robot, and integrated hydraulic cylinder can pass through
The flexible help user walking of hydraulic stem；Integrated hydraulic cylinder connection hydraulic pump can provide active drive power, so as to help to use
Person's stair activity or auxiliary user's walking；Simultaneously when user needs support, integrated hydraulic cylinder is alternatively user and carries
For larger support force.
Operation principle when integrated hydraulic cylinder provided in this embodiment is connected to the knee joint position of assistant robot is as follows：
It is hydraulically full in the first cavity 41, the second cavity 42 and the 4th cavity 44 first, and keep filling in the 3rd cavity
Full air.
During non-power state, hydraulic pressure air pump inoperative, inlet 113 and liquid outlet 114 are closed completely, so that the 4th
Amount of liquid in cavity 44 is consistent, and with cylinder body 11 relative motion does not occur for power piston 31；
When user goes down on one's knees, hydraulic stem 21 is under pressure, and hydraulic stem 21 is moved to close to the direction of cylinder body bottom 111,
So that hydraulic stem disk 211 is moved to close to the direction of power piston 31, outer spring 35 is compressed, and energy storage is being pressed
In the outer spring 35 of contracting, 42 volume of the second cavity reduces, the pressure increase in the second cavity 42, promote free-piston 32 to
It is moved close to the direction of power piston 31, so as to compress bottom spring 33, energy storage is in the bottom spring 33 compressed, and the
Liquid in two cavitys 42 is flowed by hydraulic stem disk through hole 2111 to the first cavity 41, to adapt to the volume of the second cavity 42
Variation, the volume of the first cavity 41 increase, and the inner spring 34 in the first cavity 41 is gradually replied, the energy being stored in inner spring 34
Amount release；
When user stretches knee, 21 under tension of hydraulic stem, hydraulic stem 21 is moved to the direction away from cylinder body bottom 111,
So that hydraulic stem disk 211 is moved to the direction away from power piston 31, outer spring 35 is gradually replied, and is stored in outer spring
Energy release in 35, the volume of the second cavity 42 become larger, and the pressure in the second cavity 42 reduces, and bottom spring 33 gradually returns
It is multiple, so as to the energy release that will be stored, free-piston 33 is promoted to be moved to the direction away from power piston 31, in the first cavity 41
Liquid flowed by hydraulic stem disk through hole 2111 to the second cavity 42, with adapt to the volume of the second cavity 42 variation, first
The volume of cavity 41 becomes smaller, and the inner spring 34 in the first cavity 41 is compressed, and energy storage is in the inner spring 34 compressed.
During dynamic state, hydraulic pump works, inlet 113 and liquid outlet 114 are opened and are connected with hydraulic pump completely；
Hydraulic pump by inlet 113 to the 4th cavity 44 inject liquid when, liquid is to power piston in the 4th cavity 44
31 pressure increase, propulsion power piston 31 is moved to the direction away from cylinder base 111, so as to compress bottom spring 33, energy
Amount is stored in the bottom spring 33 compressed, and free-piston 33 increases the pressure of the second cavity 42, so as to promote hydraulic stem
21 move to the direction away from cylinder body bottom 111, and the liquid in the first cavity 41 passes through hydraulic stem disk through hole 2111 to second
Cavity 42 flows, and the volume of the first cavity 41 becomes smaller, and the inner spring 34 in the first cavity 41 is compressed, and energy storage is being compressed
Inner spring 34 in, while outer spring 35 gradually reply, be stored in outer spring 35 energy release；
When the liquid in the 4th cavity 44 flows out four cavitys 44 by liquid outlet 114, liquid pair in the 4th cavity 44
The pressure of power piston 31 reduces, and bottom spring 33 is gradually replied, and so as to the energy release that will be stored, free-piston 33 is to second
The pressure of cavity 42 reduces, and the pressure that hydraulic stem 21 is subject to reduces, so as to promote hydraulic stem 21 to close to the side of cylinder body bottom 111
To movement, the liquid in the second cavity 42 is flowed by hydraulic stem disk through hole 2111 to the first cavity 41, the first cavity 41
Volume becomes larger, and the inner spring 34 in the first cavity 41 is gradually replied, the energy release being stored in inner spring 34,35 quilt of outer spring
Compression, energy storage is in outer spring 35.
It, can be by adjusting catch through hole 2221 and hydraulic stem either in dynamic state or non-power state
The registration of disk through hole 2111 adjusts flowing velocity of the liquid between the first cavity 41 and the second cavity 42, and then adjustable
The stretching speed of hydraulic stem 21 is saved, so as to play damping action, catch through hole 2221 is overlapped with hydraulic stem disk through hole 2111
Spend smaller, the resistance that the liquid in liquid and the second cavity 42 in the first cavity 41 mutually flows is relatively bigger, hydraulic stem 21
Stretching speed it is relatively slower.
When in holding state, catch through hole 2221 is completely misaligned with hydraulic stem disk through hole 2111, so that
The liquid in liquid and the second cavity 42 in first cavity 41 can not mutually flow, and hydraulic stem 21 is not sent out compared with hydraulic cylinder 11
Raw movement, therefore larger support force can be provided.
Integrated hydraulic cylinder provided in this embodiment has the beneficial effect that：
(1) mutual cooperation of cylinder body 11, hydraulic stem 21 and power piston 31 so that integrated hydraulic cylinder is in dynamic state
The driving force of active can be provided, passive Telescopic can be realized in non-power state, it is achieved thereby that same hydraulic cylinder
The driving force of active can be not only provided, but also can realize passive Telescopic；
(2) motor 22 can drive catch 222 to rotate by motor shaft 221, so as to adjust catch through hole 2221 and liquid
The registration of compression bar disk through hole 2111, and then flowing velocity of the liquid between the first cavity 41 and the second cavity 42 is adjusted,
And then the stretching speed of adjustable hydraulic stem 21, so as to play damping action；
Full of air in (3) the 3rd cavitys 43, and telescopic bottom spring 33, therefore the 3rd are equipped in the 3rd cavity 43
Cavity 43 is telescopic cavity, solves hydraulic stem 21 caused by 42 volume of the second cavity when being moved close to cylinder body 1 reduces
Pressure it is excessive the problem of so that the variation of second cavity 42 in caused cylinder body 11 in telescopic process of hydraulic stem 21 has suitable
Ying Xing, so as to play a protective role to integrated hydraulic cylinder；
(4) bottom spring 33, inner spring 34 and outer spring 35 can be with accumulation of energys, during reply during compression
It can release energy, not only save energy, but also cushioning effect is played in the compression of spring and Recovery Process, and under being
Action once provides power；
(5) it is in different convalescences according to user to be adjusted adjusting nut 351, so as to adjust just
Beginning pretightning force meets the requirement of different users；
(6) according to the curved maximum angle situation of user leg energy, adjusted by adjusting the length of the 4th cavity 44
The curved maximum angle of assistant robot knee joint energy, meets the requirement of different users.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
All any modification, equivalent and improvement made within refreshing and principle etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of integrated hydraulic cylinder, it is characterised in that：Including
Cylinder body, the cylinder body bottom of the cylinder body offer inlet and liquid outlet for being connected with hydraulic pump, the cylinder body
Cylinder body openend is equipped with opening；
Cylinder end caps, the cylinder end caps are sealed in the cylinder body openend, and the cylinder end caps offer end cap through hole；
Hydraulic stem, the hydraulic stem pass through the end cap through hole, and end is equipped with hydraulic stem disk, and the hydraulic stem disk is arranged on
In the cylinder body, the hydraulic stem disk offers hydraulic stem disk through hole, circumference and the cylinder body of the hydraulic stem disk
Interior wall seamless be slidably connected；First is formed between the cylinder end caps and the hydraulic stem disk and the side wall of the cylinder body
Cavity；
Power piston, the power piston be arranged in the cylinder body and arranged on the hydraulic stem disk and the cylinder body bottom it
Between, the circumference of the power piston and the interior wall seamless of the cylinder body are slidably connected, and the power piston is justified with the hydraulic stem
Form central cavity between the side wall of disk and the cylinder body, the power piston and the cylinder body bottom and the cylinder body
The 4th cavity is formed between side wall；
First cavity, the central cavity and the 4th cavity are filled with liquid.
2. integrated hydraulic cylinder as described in claim 1, it is characterised in that：It further includes
Motor, the hydraulic stem is hollow, and the motor is arranged in the hydraulic stem, and the motor is equipped with motor shaft；
Catch, the catch is arranged between the hydraulic stem disk and the power piston and the catch passes through the motor shaft
It is connected with the motor, the motor can drive the catch to rotate, and the catch is compared with the hydraulic stem disk through hole
Position offers catch through hole, and the registration of the catch through hole and the hydraulic stem disk through hole is adjusted by the motor.
3. integrated hydraulic cylinder as claimed in claim 2, it is characterised in that：The catch through hole and the hydraulic stem disk through hole
Size it is identical.
4. integrated hydraulic cylinder as claimed in claim 2, it is characterised in that：The catch is equipped with catch flange, and the catch is convex
Edge is arranged in the hydraulic stem.
5. integrated hydraulic cylinder as claimed in claim 4, it is characterised in that：Sliding bearing is arranged on the catch flange, institute
The interior wall seamless of the outer wall and the hydraulic stem of stating sliding bearing is slidably connected.
6. integrated hydraulic cylinder as claimed in claim 2, it is characterised in that：One end that the hydraulic stem is arranged on outside the cylinder body is set
There is hydraulic pressure stem cover, the hydraulic pressure stem cover is equipped with the end cap connecting portion being attached with external equipment.
7. integrated hydraulic cylinder as claimed in claim 2, it is characterised in that：It further includes
Free-piston, the free-piston be arranged between the catch and the power piston, the circumference of the free-piston with
The interior wall seamless of the cylinder body is slidably connected；
The second cavity is formed between the free-piston and the side wall of the catch and the cylinder body, is filled in second cavity
There is liquid；
The 3rd cavity, the 3rd cavity are formed between the free-piston and the side wall of the power piston and the cylinder body
It is interior filled with air；
Bottom spring, the bottom spring be arranged on the 3rd cavity in, and the both ends of the bottom spring respectively with it is described from
It is connected by piston with the power piston.
8. such as claim 1~7 any one of them integrated hydraulic cylinder, it is characterised in that：Further include inner spring, the inner spring
It is sheathed on the hydraulic stem, and the inner spring is arranged between the cylinder end caps and the hydraulic stem disk.
9. such as claim 1~7 any one of them integrated hydraulic cylinder, it is characterised in that：It further includes
Adjusting nut, the adjusting nut is sheathed on the hydraulic stem and outside the cylinder body, the adjusting nut can edge
The hydraulic stem slides；
Outer spring, the outer spring are sheathed on the hydraulic stem and arranged between the cylinder end caps and the adjusting nuts.
10. such as claim 1~7 any one of them integrated hydraulic cylinder, it is characterised in that：The cylinder body bottom, which is additionally provided with, to be used for
The bottom connecting portion being attached with external equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710735619.0A CN108071624B (en) | 2017-08-24 | 2017-08-24 | Integrated hydraulic cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710735619.0A CN108071624B (en) | 2017-08-24 | 2017-08-24 | Integrated hydraulic cylinder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108071624A true CN108071624A (en) | 2018-05-25 |
| CN108071624B CN108071624B (en) | 2020-03-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710735619.0A Active CN108071624B (en) | 2017-08-24 | 2017-08-24 | Integrated hydraulic cylinder |
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| Country | Link |
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| CN (1) | CN108071624B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111016245A (en) * | 2019-12-03 | 2020-04-17 | 合肥铭衡机械制造有限公司 | Hydraulic cylinder for punching machine with cooling function |
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|---|---|
| CN108071624B (en) | 2020-03-20 |
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