CN208040821U - A kind of hydraulic cylinder and the hydraulic test containing the hydraulic cylinder - Google Patents
A kind of hydraulic cylinder and the hydraulic test containing the hydraulic cylinder Download PDFInfo
- Publication number
- CN208040821U CN208040821U CN201820526368.5U CN201820526368U CN208040821U CN 208040821 U CN208040821 U CN 208040821U CN 201820526368 U CN201820526368 U CN 201820526368U CN 208040821 U CN208040821 U CN 208040821U
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- Prior art keywords
- cylinder
- hydraulic
- spool
- oil
- piston
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- 239000012530 fluid Substances 0.000 claims description 21
- 238000007789 sealing Methods 0.000 claims description 15
- 238000007667 floating Methods 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 2
- 238000004134 energy conservation Methods 0.000 abstract description 5
- 230000007613 environmental effect Effects 0.000 abstract description 5
- 239000003921 oil Substances 0.000 description 55
- 238000010586 diagram Methods 0.000 description 5
- 238000005381 potential energy Methods 0.000 description 5
- 238000005265 energy consumption Methods 0.000 description 3
- 239000010720 hydraulic oil Substances 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000009194 climbing Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 238000009415 formwork Methods 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Abstract
A kind of hydraulic cylinder and the hydraulic test containing the hydraulic cylinder, it is related to technical field of hydraulic pressure, including cylinder body, spool, piston component, power plant and oil inlet, cylinder body includes cylinder cap one and cylinder barrel, spool one end is taper, piston component includes piston, piston rod and oil duct, cylinder body inner carrier is rodless cavity on one side to cylinder cap one, the another side of piston is rod chamber, rodless cavity is communicated with oil inlet, in this structure, axial movement by controlling spool opens and closes oil duct, the servo-actuated of piston component can be achieved, collaboration digital control system can realize digital precision control, it is simple in structure, long lifespan and energy conservation and environmental protection.
Description
Technical field
A kind of hydraulic pressure the utility model is related to technical field of hydraulic pressure more particularly to hydraulic cylinder and containing the hydraulic cylinder is set
It is standby.
Background technology
Such as the hydraulic tests such as hydraulic forging press, hydraulic bending press, hydraulic plate shears, hydraulic injection molding machine and hydraulic climbing formwork are
Multiple hydraulic cylinders work asynchronously, and are related to multiple hydraulic cylinders stationary problem, such as vibration mechine, hydraulic robot and hydraulic numerical control
The hydraulic tests such as lathe are mostly high-precision machinery, are related to hydraulic cylinder precision problem, either multiple hydraulic cylinders stationary problem still
Hydraulic cylinder precision problem has higher requirement, existing servo-hydraulic to the stability, precision and capability of fast response of hydraulic cylinder
Although cylinder can meet requirements above, complicated, the cleannes of oil are required high, the shortcomings of energy consumption is big makes its application
Range is limited.
Number of patent application：201611000955.2 disclosing digital servo cylinder, which passes through control
Motor and ball-screw processed control spool, and frequency response is high, and initiation culture is high, and unit power is at low cost, but the program exist with
Lower disadvantage：
1. servo direction control spool one end described in the program is connect with limited block one end, the other end and axis of limited block
It is connected to lash compensation device one end, the other end of axial clearance compensation device is connected with the axis of control motor, and it is more that there are transmission chains, no
Easily ensure precision；
2. servo direction control spool rotates short life with motor；
3. rodless cavity piston variable area is twice of rod chamber piston face product, energy consumption is big；
4. the program does not disclose how feed screw nut engages with piston rod centre bore.
Said program there are complicated, short life, energy consumption very much not energy conservation and environmental protection the shortcomings of.
Utility model content
Technical solutions of the utility model one propose a kind of hydraulic cylinder, and hydraulic cylinder collaboration digital control system can realize digital precision
Control, simple in structure, long lifespan and energy conservation and environmental protection.
A kind of hydraulic cylinder, including cylinder body, spool, piston component, power plant and oil inlet, the cylinder body include cylinder cap
One and cylinder barrel, one center of cylinder cap have hole, there is spool in hole, have sealing element between spool and hole, spool one end is taper, and cylinder cap one is pacified
Mounted in cylinder barrel one end, piston component is installed in cylinder barrel, the piston component includes piston, piston rod and oil duct, is lived in cylinder body
Fill in cylinder cap one is rodless cavity on one side, and the another side of piston is rod chamber, and the power plant is connect with spool, rodless cavity and
Oil inlet communicates.
Preferably, the utility model further includes valve seat, and the valve seat is mounted on the end face of piston component, and valve seat center has
Hole, oil duct one end are communicated by the hole on valve seat with rodless cavity, and the other end is communicated with oil return circuit.
Preferably, the utility model can further include oil outlet and third hydraulic fluid port, the cylinder body further include oil returning tube and
Cylinder cap two, described oil returning tube one end have interval edge, one end of cylinder barrel to be equipped with cylinder cap one, and the other end, along installation, is returned with interval
The other end of oily cylinder is equipped with cylinder cap two, and there is hole at interval along center, there is sealing element, the piston rod of sealing element and piston component in hole
Cooperation, the third hydraulic fluid port is by closely spaced along position on cylinder barrel, and oil inlet is communicated with rodless cavity, and oil return opening is in oil returning tube
On, the third hydraulic fluid port is connect with accumulator.
Preferably, the utility model can further include oil outlet and third hydraulic fluid port, and the cylinder body further includes cylinder cap two, cylinder
The one end of cylinder far from cylinder cap one is equipped with cylinder cap two, and there is hole at two center of cylinder cap, there is sealing element, sealing element and piston in hole
The piston rod of component coordinates, and the third hydraulic fluid port is communicated close to the position of cylinder cap two, oil inlet with rodless cavity on cylinder barrel, returns
Hydraulic fluid port is arranged on the piston rod, is communicated with oil duct.
Preferably, the utility model can further include spring and oil return opening, and the spring is in rod chamber, the cylinder
There are oil return opening, oil return opening to be communicated with rod chamber on cylinder, the cylinder body further includes cylinder cap two, one end peace of the cylinder barrel far from cylinder cap one
Equipped with cylinder cap two.
Preferably, the spool includes valve core rod and valve core head, and valve core head one end is tapered, the other end and valve core rod one
Hold floating connection.
Preferably, the power plant includes fixed seat, motor, rack and idler wheel, and fixed seat is connect with cylinder body, motor
In fixed seat, motor output end is equipped with gear, wheel and rack engagement, and idler wheel is pressed in the side of the non-engagement of rack,
Idler wheel is connect with fixed seat, and rack is connect with spool, the preferred servo motor of the motor.
Preferably, the oil inlet is communicated by check valve with accumulator.
Technical solutions of the utility model two also propose that a kind of hydraulic test containing hydraulic cylinder, the hydraulic cylinder are technology
Any hydraulic cylinder described in scheme one, performance stabilization, precision height, fast response time and energy conservation and environmental protection.
Compared with prior art, the utility model has the beneficial effects that：In this structure, rodless cavity hydraulic pressure makes piston
The potential energy of the oriented separate spool direction movement of component, the pressure in rod chamber make the gesture that piston component is moved to spool direction
Can, it is static or oil inlet and oil return opening communicate when being moved to spool, the spool in piston component underrun in piston component
Can keep gap appropriate with valve seat, control the oil inlet quantity of oil duct, by control spool axial movement open and close oil duct, it can be achieved that
Piston component is servo-actuated, and collaboration digital control system can realize digital precision control, simple in structure, long lifespan and energy conservation and environmental protection.
Description of the drawings
Fig. 1 is a kind of structural schematic diagram of the utility model（One）.
Fig. 2 is a kind of structural schematic diagram of the utility model（Two）.
Fig. 3 is a kind of structural schematic diagram of the utility model（Three）.
Fig. 4 is a kind of structural schematic diagram of the utility model（Four）.
Fig. 5 is a kind of structural schematic diagram of the utility model（Five）.
In figure：
1 cylinder body, 101 cylinder caps one, 102 cylinder barrels, 103 cylinder caps two, 104 oil returning tubes, 105 interval edges, 2 spools, 201 spools
Bar, 202 valve core heads, 3 piston components, 301 pistons, 302 piston rods, 303 oil ducts, 4 valve seats, 5 power plants, 501 fixed seats,
502 motors, 503 racks, 6 springs, 7 oil inlets, 8 oil return openings, 9 third hydraulic fluid ports.
Specific implementation mode
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.
Embodiment one
A kind of hydraulic cylinder, as shown in Figure 1, including cylinder body 1, spool 2, piston component 3, valve seat 4, power plant 5 and oil inlet
Mouth 7, the cylinder body 1 include cylinder cap 1 and cylinder barrel 102, and there is hole at one 101 center of cylinder cap, there is spool 2, spool 2 and hole in hole
Between have a sealing element, 2 one end of spool is taper, and cylinder cap 1 is mounted on 102 one end of cylinder barrel, piston component is equipped in cylinder barrel 102
3, the piston component 3 includes piston 301, piston rod 302 and oil duct 303, and 1 inner carrier 301 of cylinder body arrives one side of cylinder cap 1
Another side for rodless cavity, piston 301 is rod chamber, and the valve seat 4 is mounted on the end face of piston component 3, and 4 center of valve seat has
Hole, 303 one end of oil duct are communicated by the hole on valve seat 4 with rodless cavity, and the other end is communicated with oil return circuit, rodless cavity and oil inlet
7 communicate, and the axial movement of spool 2 can open and close oil duct 303, and power plant 5 is connect with spool 2, and having in rod chamber makes piston component 3
The pressure moved to one 101 direction of cylinder cap（Spring force or fluid pressure）.
The operation principle of the embodiment is：Power plant 5 receive digital signal driving spool 2 move axially, when spool 2 to
3 direction of piston component is moved, and oil duct is closed when spool 2 is closed with valve seat 4, and the hydraulic oil conveyed at this time from oil inlet 7 makes piston
Component 3 is moved to far from 2 direction of spool；When 3 movement speed of piston component is faster than spool 2, spool 2 has gap, hydraulic pressure with valve seat 4
Oil is flowed out from oil duct 303, and the potential energy that the pressure in rod chamber is moved to piston component 3 to spool 2, piston component 3 follows
Spool 2 moves axially, and is servo-actuated the pressure equilibrium locations in rod chamber and rodless cavity.
Embodiment two
Further include oil return opening 8 and third hydraulic fluid port 9 as shown in Fig. 2, on the basis of embodiment one, the cylinder body 1 further includes
Cylinder cap 2 103 and oil returning tube 104, described 104 one end of oil returning tube have interval along 105, and one end of cylinder barrel 102 is equipped with cylinder cap one
101, the other end is with interval along 105 installations, and the other end of oil returning tube 104 is equipped with cylinder cap 2 103, and there is hole at interval along 105 centers,
There are sealing element, the piston rod 302 of sealing element and piston component 3 to coordinate in hole, the third hydraulic fluid port 9 is close on cylinder barrel 102
Interval is along 105 positions, and oil inlet 7 is communicated with rodless cavity, and on oil returning tube 104, third hydraulic fluid port 9 is connect oil return opening 8 with accumulator.
The embodiment operation principle is：When spool 2 is moved to 301 direction of piston, it is closed valve seat 4, hydraulic oil, which pushes, lives
Plug assembly 3 is moved to the direction far from spool 2, and the hydraulic oil in rod chamber is pressed into accumulator by third hydraulic fluid port 9, gives simultaneously
The potential energy that piston component 3 is moved to 2 direction of spool, when spool 2 is to far from the movement of 3 direction of piston component, the liquid in rod chamber
Pressure oil flows into oil return opening 8, and the potential energy that piston component 3 is moved to 2 direction of spool is more than to the potential energy moved far from 2 direction of spool,
To make piston component 3 that spool 2 be followed to move axially.
Embodiment three
Further include oil return opening 8 and third hydraulic fluid port 9 as shown in figure 3, on the basis of embodiment one, the cylinder body 1 further includes
Cylinder cap 2 103, the one end of cylinder barrel 102 far from cylinder cap 1 are equipped with cylinder cap 2 103, and there is hole at 2 103 center of cylinder cap,
There are sealing element, the piston rod 302 of sealing element and piston component 3 to coordinate in hole, the third hydraulic fluid port 9 is close on cylinder barrel 102
The position of cylinder cap 2 103, third hydraulic fluid port 9 are connect with accumulator, and oil inlet 7 is communicated with rodless cavity, and oil return opening 8 is arranged in piston rod
It on 302, is communicated with oil duct 303, the embodiment operation principle is identical as embodiment two.
Example IV
Further include spring 6 and oil return opening 8, the spring 6 is in rod chamber as shown in figure 4, on the basis of embodiment one
Interior, the cylinder body 1 further includes cylinder cap 2 103, and the one end of cylinder barrel 102 far from cylinder cap 1 is equipped with cylinder cap 2 103, described
Cylinder barrel 102 on there is oil return opening 8, oil return opening 8 to be communicated with rod chamber.
Embodiment five
As shown in figure 5, spool 2 described in the utility model includes valve core rod 201 and valve core head 202,202 one end of valve core head
To be tapered, the other end is connect with 201 one end of valve core rod, and valve core rod 201 and the valve core head 202 of spool 2 can be prevented with floating connection
4 position offset of spool 2 or valve seat, while being convenient for changing valve core head 202.
Embodiment six
As shown in Figure 3 and Figure 4, oil inlet 7 described in the utility model is communicated by check valve with accumulator, to energy storage
The device pressure loss compensates.
Embodiment seven
As shown in Fig. 2, power plant 5 described in the utility model includes fixed seat 501, motor 502, rack 503 and rolling
Wheel, fixed seat 501 are connect with cylinder body 1, and motor 502 is mounted in fixed seat 501, and 502 output end of motor is equipped with gear, gear
It is engaged with rack 503, idler wheel is pressed in the side of 503 non-engagement of rack, and idler wheel is connect with fixed seat 501, rack 503 and spool 2
Connection, the 502 preferred servo motor of motor, the embodiment operation principle：Motor 502 receives digital signal band moving gear and revolves
Turn, the engagement of wheel and rack 503 makes rack 503 move axially, and idler wheel plays guiding role.
In conclusion the only preferable specific implementation mode of the utility model, but the scope of protection of the utility model is not
Be confined to this, any one skilled in the art within the technical scope disclosed by the utility model, according to this practicality
Novel technical solution and its utility model design are subject to equivalent substitution or change, should all cover the protection model in the utility model
Within enclosing.
Claims (9)
1. a kind of hydraulic cylinder, cylinder body（1）, spool（2）, piston component（3）, power plant（5）And oil inlet（7）, feature exists
In the cylinder body（1）Including cylinder cap one（101）And cylinder barrel（102）, cylinder cap one（101）There is hole at center, has spool in hole（2）,
Spool（2）There are sealing element, spool between hole（2）One end is taper, cylinder cap one（101）Mounted on cylinder barrel（102）One end, cylinder barrel
（102）Piston component is inside installed（3）, the piston component（3）Including piston（301）, piston rod（302）And oil duct（303）,
Cylinder body（1）Inner carrier（301）To cylinder cap one（101）On one side be rodless cavity, piston（301）Another side be rod chamber, power
Device（5）With spool（2）Connection, rodless cavity and oil inlet（7）It communicates.
2. a kind of hydraulic cylinder as described in claim 1, further includes valve seat（4）, which is characterized in that the valve seat（4）It is mounted on
Piston component（3）End face on, valve seat（4）There are hole, oil duct in center（303）Valve seat is passed through in one end（4）On hole and rodless cavity phase
Logical, the other end is communicated with oil return circuit.
3. a kind of hydraulic cylinder as claimed in claim 2, further includes oil return opening（8）With third hydraulic fluid port（9）, which is characterized in that institute
The cylinder body stated（1）It further include cylinder cap two（103）And oil returning tube（104）, the oil returning tube（104）There is interval edge in one end（105）,
Cylinder barrel（102）One end cylinder cap one is installed（101）, the other end with interval edge（105）Installation, oil returning tube（104）The other end
Cylinder cap two is installed（103）, it is spaced edge（105）There is hole at center, there is sealing element, sealing element and piston component in hole（3）Piston
Bar（302）Cooperation, the third hydraulic fluid port（9）In cylinder barrel（102）It is upper to lean on closely spaced edge（105）Position, oil inlet（7）With no bar
Chamber communicates, oil return opening（8）In oil returning tube（104）On.
4. a kind of hydraulic cylinder as claimed in claim 2, further includes oil return opening（8）With third hydraulic fluid port（9）, which is characterized in that institute
The cylinder body stated（1）It further include cylinder cap two（103）, cylinder barrel（102）Far from cylinder cap one（101）One end cylinder cap two is installed（103）,
The cylinder cap two（103）There is hole at center, there is sealing element, sealing element and piston component in hole（3）Piston rod（302）Cooperation,
The third hydraulic fluid port（9）In cylinder barrel（102）Upper close cylinder cap two（103）Position, oil inlet（7）It communicates, returns with rodless cavity
Hydraulic fluid port（8）It is arranged in piston rod（302）On, with oil duct（303）It communicates.
5. a kind of hydraulic cylinder as claimed in claim 2, further includes spring（6）And oil return opening（8）, which is characterized in that it is described
Spring（6）In rod chamber, the cylinder body（1）It further include cylinder cap two（103）, cylinder barrel（102）Far from cylinder cap one（101）One
End is equipped with cylinder cap two（103）, the cylinder barrel（102）On have oil return opening（8）, oil return opening（8）It is communicated with rod chamber.
6. a kind of hydraulic cylinder as described in claim 1, which is characterized in that the spool（2）Including valve core rod（201）And valve
Core print（202）, valve core head（202）One end is tapered, the other end and valve core rod（201）One end floating connection.
7. a kind of hydraulic cylinder as described in claim 1, which is characterized in that the power plant（5）Including fixed seat
（501）, motor（502）, rack（503）And idler wheel, fixed seat（501）With cylinder body（1）Connection, motor（502）Mounted on fixation
Seat（501）On, motor（502）Output end is equipped with gear, wheel and rack（503）Engagement, idler wheel are pressed in rack（503）It is non-to nibble
The side of conjunction, idler wheel and fixed seat（501）Connection, rack（503）With spool（2）Connection.
8. a kind of hydraulic cylinder as claimed in claim 3, which is characterized in that the third hydraulic fluid port（9）It is connect with accumulator, it is described
Oil inlet（7）It is communicated with accumulator by check valve.
9. a kind of hydraulic test containing hydraulic cylinder, which is characterized in that the hydraulic cylinder is any liquid of claim 1 to 8
Cylinder pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820526368.5U CN208040821U (en) | 2018-04-13 | 2018-04-13 | A kind of hydraulic cylinder and the hydraulic test containing the hydraulic cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820526368.5U CN208040821U (en) | 2018-04-13 | 2018-04-13 | A kind of hydraulic cylinder and the hydraulic test containing the hydraulic cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208040821U true CN208040821U (en) | 2018-11-02 |
Family
ID=63943983
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820526368.5U Expired - Fee Related CN208040821U (en) | 2018-04-13 | 2018-04-13 | A kind of hydraulic cylinder and the hydraulic test containing the hydraulic cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208040821U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108331801A (en) * | 2018-04-13 | 2018-07-27 | 王志海 | A kind of hydraulic cylinder and the hydraulic test containing the hydraulic cylinder |
-
2018
- 2018-04-13 CN CN201820526368.5U patent/CN208040821U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108331801A (en) * | 2018-04-13 | 2018-07-27 | 王志海 | A kind of hydraulic cylinder and the hydraulic test containing the hydraulic cylinder |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181102 |