CN109404361A - A kind of hydraulic self-locking compression cylinder assembly - Google Patents
A kind of hydraulic self-locking compression cylinder assembly Download PDFInfo
- Publication number
- CN109404361A CN109404361A CN201811551391.0A CN201811551391A CN109404361A CN 109404361 A CN109404361 A CN 109404361A CN 201811551391 A CN201811551391 A CN 201811551391A CN 109404361 A CN109404361 A CN 109404361A
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- Prior art keywords
- transition plate
- pedestal
- drive shaft
- hydraulic
- plate
- Prior art date
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- Pending
Links
- 230000006835 compression Effects 0.000 title claims abstract description 12
- 238000007906 compression Methods 0.000 title claims abstract description 12
- 230000007704 transition Effects 0.000 claims abstract description 40
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 28
- 238000003825 pressing Methods 0.000 claims abstract description 22
- 229910000851 Alloy steel Inorganic materials 0.000 claims description 5
- 229910000831 Steel Inorganic materials 0.000 claims 1
- 239000010959 steel Substances 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 3
- 230000000712 assembly Effects 0.000 abstract 1
- 238000000429 assembly Methods 0.000 abstract 1
- 230000033001 locomotion Effects 0.000 description 17
- 239000007788 liquid Substances 0.000 description 13
- 239000003921 oil Substances 0.000 description 9
- 230000005540 biological transmission Effects 0.000 description 3
- 230000035939 shock Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000003628 erosive effect Effects 0.000 description 2
- 239000010720 hydraulic oil Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
Classifications
-
- 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
- F15B15/12—Characterised by the construction of the motor unit of the oscillating-vane or curved-cylinder type
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
- B23Q3/02—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
- B23Q3/06—Work-clamping means
- B23Q3/08—Work-clamping means other than mechanically-actuated
- B23Q3/082—Work-clamping means other than mechanically-actuated hydraulically actuated
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Engineering & Computer Science (AREA)
- Hydraulic Motors (AREA)
Abstract
The invention discloses the hydraulic self-locking compression cylinder assemblies of one kind of hydraulic device technical field, including pedestal, in the middle part of the outer wall of the pedestal and bottom is plugged with transition plate, two connection carrier bars are welded at the top of the pedestal, top of two connection carrier bars mutually depending on side is plugged with pressing plate by connecting pin, connecting column is bolted with by clamping screw on the right side of the intracavity bottom of the pedestal, transition plate is run through at the top of the connecting column, the transition plate and base inner wall junction are fixedly connected with fixing seat, the top center of transition plate described in bottom is equipped with drive shaft, the top center of the top transition plate is run through at the top of the drive shaft, the top junction outer wall of the drive shaft and the top transition plate is rotatably connected to bearing, pass through the combination of the devices such as the cycloid hydraulic motor and drive shaft that are arranged on device and rotary shaft, it is convenient Clamping force will not generate variation to device in an unstressed state, to improve the precision of work pieces process.
Description
Technical field
The present invention relates to hydraulic device technical field, specially a kind of hydraulic self-locking compression cylinder assembly.
Background technique
Hydraulic cylinder is that hydraulic energy is changed into mechanical energy, the hydraulic of straight reciprocating motion (or pendulum motion) is done and executes member
Part.Its structure is simple, reliable operation.Deceleration device when realizing reciprocating motion, can be removed from it, and do not have drive gap,
Movement is steady, therefore is used widely in the hydraulic system of various machinery.Hydraulic cylinder power output and piston effective area and
The pressure difference on its both sides is directly proportional；Hydraulic cylinder substantially by cylinder barrel and cylinder cap, piston and piston rod, sealing device, buffer unit with
Exhaust apparatus composition.Depending on concrete application occasion, other devices are then essential for buffer unit and exhaust apparatus.
The effect of hydraulic system is to increase active force by changing pressure.One complete hydraulic system is by five part groups
At i.e. dynamical element, executive component, control element, auxiliary element (attachment) and hydraulic oil.Hydraulic system can be divided into two classes: liquid
Press transmission system and hydraulic control system.Hydraulic Power Transmission System is to transmit power and movement as major function.Hydraulic control system
Hydraulic system output is then set to meet specific performance requirement (especially dynamic property), usually said hydraulic system refers mainly to
Hydraulic Power Transmission System.
The common failure behavior of current hydraulic cylinder has the following:
1, the pressure loss
Since liquid has stickiness, it is inevitably present frictional force again when flowing in pipeline, so liquid is flowing over
Part energy must be lost in journey.The loss of this portion of energy is mainly shown as the pressure loss.
The pressure loss has linear loss and two kinds of local losses.Linear loss is when liquid flows in the constant straight tube of diameter
When crossing a distance, the pressure loss that is generated by friction.Local losses is due to pipe section shape suddenly change, liquid stream side
To the pressure loss caused by the liquid flowing resistance of change or other forms.Total pressure loss is equal to linear loss and local losses
The sum of.Due to certainly existing for the pressure loss, so the rated pressure of pump is larger than maximum functional required when system work
Pressure, the maximum working pressure (MWP) needed for generally system can work are estimated multiplied by one 1.3 or so coefficient.
2, flow loss
In hydraulic system, respectively there is the surface of relative motion by pressure element, such as hydraulic cylinder inner surface and outer surface of piston, because
There is relative motion, so there is certain gap between them.If gap is on one side high pressure oil, another side is low pressure
Oil, then high pressure oil will flow to low-pressure area through gap to cause to leak.Simultaneously as Hydraulic Elements sealing is not perfect, one
Divide oil liquid that can also leak to the outside.Actual flow caused by this leakage is reduced, and here it is the flow loss described in us.
Flow loss influences movement velocity, and leaks and be difficult to be absolutely avoided, so the specified stream pumped in hydraulic system
Amount is larger than maximum stream flow required when system work.Maximum stream flow needed for can generally also being worked with system is multiplied by one
1.1 or so coefficient is estimated.
3, hydraulic shock
Executive component commutation and valve, which are closed, makes the liquid of flowing due to inertia and certain Hydraulic Elements reactions movement be not sensitive enough
Instantaneous pressure peak value is generated, hydraulic shock is claimed.Its peak value can be more than several times of operating pressure.
4, cavitation
If penetrating into air in hydraulic system, when higher to pressure with the liquid flow movement region of bubble in liquid, bubble exists
It will be ruptured rapidly under elevated pressures effect, and so as to cause local hydraulic shock, cause noise and vibration.In addition, since bubble is broken
It is broken the continuity of liquid stream, reduces the oil filling capacity of oil pipe, the fluctuation of flow and pressure is caused, absorbs impact Hydraulic Elements
Load influences its service life.
5, cavitation
Hole occurs along with cavitation erosion, and the oxygen in bubble generated in hole can also corrode the surface of hardware, we are this
Cavitation erosion is named in corrosion caused by planting due to cavitation occurs.
For current fixture hydraulic cylinder there is after without continuous pressure supply, no pressing force or oil pressure leakage reduce pressing force, oil pressure
Clamping force can there is the power that allows of elasticity, pressurize fixture hydraulic state time length can also have micro- leakage, add to influence workpiece
The precision of work.
Summary of the invention
It is mentioned above in the background art to solve the purpose of the present invention is to provide a kind of hydraulic self-locking compression cylinder assembly
Existing hydraulically operated fixture is easy to produce the problem of leakage is to influence Workpiece Machining Accuracy.
To achieve the above object, the invention provides the following technical scheme: a kind of hydraulic self-locking compression cylinder assembly, including bottom
Seat, in the middle part of the outer wall of the pedestal and bottom are plugged with transition plate, are welded with two connection carrier bars at the top of the pedestal, and two
The connection carrier bar is mutually plugged with pressing plate by connecting pin depending on the top of side, passes through locking on the right side of the intracavity bottom of the pedestal
Bolt is bolted with connecting column, and transition plate, the fixed company of the transition plate and base inner wall junction are run through in the top of the connecting column
It is connected to fixing seat, the top center of transition plate described in bottom is equipped with drive shaft, and the top of the drive shaft is through described in top
The top junction outer wall of the top center of transition plate, the drive shaft and the top transition plate is rotatably connected to bearing, pushes up
Transition plate described in portion is with transition plate described in bottom mutually depending on being equipped with cycloid hydraulic motor, the cycloid hydraulic motor on the right side of side
Power output end be fixedly connected with drive shaft, rotary shaft, the top of the rotary shaft are fixedly connected at the top of the drive shaft
Portion is fixedly connected with rotor connecting shaft, and the top of the rotor connecting shaft is connect by connecting pin with pressing plate.
Preferably, the quantity for the fixing seat installed on the transition plate of transition plate and top described in bottom is at least 2.
Preferably, the connection carrier bar includes the connecting bottom board connecting with pedestal and the connection top plate with pressing plate grafting, and is connected
Pass through connection pin connection between bottom plate and connection top plate.
Preferably, the pedestal is steel alloy seat.
Preferably, the transition plate is alloy-steel sheet.
Compared with prior art, the beneficial effects of the present invention are: by the hydraulic self-locking setting for compressing cylinder assembly of the one kind,
It is reasonable in design, the movement of cycloid hydraulic motor is driven by external hydraulic feedway, so that the rotation of drive shaft is driven,
Drive shaft is set to drive the rotation of rotary shaft, drive shaft is fixed in bearing, and rotor connecting shaft is driven while rotary shaft rotates
Spiral makes pressing plate workpiece pressing to drive the pressing plate at top mobile, due to being that rotary motion is converted to line thread company
Connect, will not decline rotor connecting shaft in an unstressed state, thus the clamping force of pressing plate due to mechanical force lock without
Variation can be generated, when needing to unclamp workpiece, external hydraulic feedway pressure release makes cycloid hydraulic motor counter motion, thus
Rotor connecting shaft is reversely rotated, unclamps clamping plate, it is therefore prevented that the generation for a possibility that clamping force can become smaller at any time conveniently makes
With.
Detailed description of the invention
Fig. 1 is schematic structural view of the invention；
Fig. 2 is schematic diagram of internal structure of the present invention；
Fig. 3 is overlooking structure diagram of the present invention.
In figure: 1 connection carrier bar, 2 connecting pins, 3 pressing plates, 4 pedestals, 5 rotor connecting shafts, 6 rotary shafts, 7 bearings, 8 transition plates,
9 drive shafts, 10 cycloid hydraulic motors, 11 fixing seats, 12 connecting columns, 13 clamping screws.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
The invention provides the following technical scheme: a kind of hydraulic self-locking compression cylinder assembly, leads to liquid for reducing overlong time
The case where pressure leakage reduces the clamping force of clamping plate, referring to Fig. 1, including pedestal 4, pedestal 4 is steel alloy seat, pedestal 4
Outer wall in the middle part of and bottom be plugged with transition plate 8, transition plate 8 is alloy-steel sheet, for drive shaft 9 and cycloid hydraulic motor 10
Fixation, the top of pedestal 4 is welded with two connection carrier bars 1, and the tops of two connection 1 phases of carrier bar view sides pass through connecting pin 2
Be plugged with pressing plate 3, for limiting the clamping direction of pressing plate 3, connection carrier bar 1 include the connecting bottom board being connect with pedestal 4 and with pressure
The connection top plate of 3 grafting of plate, and connected between connecting bottom board and connection top plate by connecting pin 2, referring to Fig. 2, pedestal 4 is interior
Chamber bottom right is bolted with connecting column 12 by clamping screw 13, and transition plate 8 is run through at the top of connecting column 12, for improving transition
The support performance of piece 8, transition plate 8 and 4 inner wall junction of pedestal are fixedly connected with fixing seat 11, bottom transition piece 8 and top mistake
The quantity for crossing the fixing seat 11 installed on piece 8 is at least 2, for improving the support performance of transition plate 8, bottom transition piece 8
Top center drive shaft 9 is installed, for linking to rotary shaft 6, the top of drive shaft 9 is through top transition plate 8
The top junction outer wall of top center, drive shaft 9 and top transition plate 8 is rotatably connected to bearing 7, for drive shaft 9 into
Row is fixed, and top transition plate 8, mutually depending on being equipped with cycloid hydraulic motor 10 on the right side of side, drives with bottom transition piece 8 for driving
The power output end of the rotation of moving axis 9, cycloid hydraulic motor 10 is fixedly connected with drive shaft 9, and the top of drive shaft 9 is fixedly connected
There is rotary shaft 6, the top of rotary shaft 6 is fixedly connected with rotor connecting shaft 5, and the top of rotor connecting shaft 5 passes through connecting pin 2 and pressure
Plate 3 connects, the lifting for linked clamping plate 3.
In the specific use process, hydraulic oil is injected by external hydraulic feedway from the hydraulic fluid port of cycloid hydraulic motor 10
The inside of cycloid hydraulic motor 10, and the rotor inside cycloid hydraulic motor 10 is pushed to click through around the center of cycloid hydraulic motor 10
Row revolution, to drive the movement of the power output end of cycloid hydraulic motor 10, to drive the rotation of drive shaft 9, makes to drive
Axis 9 drives the rotation of rotary shaft 6, and bearing 7 is fixed while rotation to drive shaft 9, while rotating rotary shaft 6
5 spiral of rotor connecting shaft is driven, to drive the pressing plate 3 at top mobile by connecting pin 2, makes 3 workpiece pressing of pressing plate, and
By connection carrier bar 1 in the connection of pressing plate 3, the direction that pressing plate 3 is clamped and unclamped is controlled, due to being to convert rotational motion into directly
Line be threadedly coupled, rotor connecting shaft 5 in an unstressed state will not straight line decline, thus the clamping force of pressing plate 3 due to
By the locking of mechanical force without generating variation, when needing to unclamp workpiece, external hydraulic feedway pressure release makes cycloid liquid
Oil discharge inside pressure motor 10, controls 10 rotor counter motion of cycloid hydraulic motor, to make the dynamic of cycloid hydraulic motor 10
Power output end drives 9 counter motion of drive shaft, and drives rotor connecting shaft 5 to reversely rotate by rotary shaft 6, to keep clamping plate loose
It opens, it is therefore prevented that the generation for a possibility that clamping force can become smaller at any time is easy to use.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (5)
1. a kind of hydraulic self-locking compression cylinder assembly, including pedestal (4), it is characterised in that: in the middle part of the outer wall of the pedestal (4) and bottom
Portion is plugged with transition plate (8), and two connection carrier bars (1), two connection carrier bars (1) are welded at the top of the pedestal (4)
Mutually the top depending on side is plugged with pressing plate (3) by connecting pin (2), passes through locking screw on the right side of the intracavity bottom of the pedestal (4)
Bolt (13) is bolted with connecting column (12), and transition plate (8), the transition plate (8) and pedestal are run through in the top of the connecting column (12)
(4) inner wall junction is fixedly connected with fixing seat (11), and the top center of transition plate (8) described in bottom is equipped with drive shaft (9),
The top center of the top transition plate (8), the drive shaft (9) and the top mistake are run through in the top of the drive shaft (9)
The top junction outer wall for crossing piece (8) is rotatably connected to bearing (7), transition plate (8) described in the top transition plate (8) and bottom
Mutually depending on being equipped on the right side of side cycloid hydraulic motor (10), the power output end and drive shaft of the cycloid hydraulic motor (10)
(9) it is fixedly connected, is fixedly connected with rotary shaft (6) at the top of the drive shaft (9), the top of the rotary shaft (6) is fixed to be connected
It is connected to rotor connecting shaft (5), the top of the rotor connecting shaft (5) is connect by connecting pin (2) with pressing plate (3).
2. the hydraulic self-locking compression cylinder assembly of one kind according to claim 1, it is characterised in that: transition plate described in bottom (8)
It is at least 2 with the quantity for the fixing seat (11) installed on the top transition plate (8).
3. the hydraulic self-locking compression cylinder assembly of one kind according to claim 1, it is characterised in that: connection carrier bar (1) packet
The connecting bottom board connecting with pedestal (4) and the connection top plate with pressing plate (3) grafting are included, and is led between connecting bottom board and connection top plate
Cross connecting pin (2) connection.
4. the hydraulic self-locking compression cylinder assembly of one kind according to claim 1, it is characterised in that: the pedestal (4) is alloy
Steel seat.
5. the hydraulic self-locking compression cylinder assembly of one kind according to claim 1, it is characterised in that: the transition plate (8) is to close
Golden steel disc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811551391.0A CN109404361A (en) | 2018-12-19 | 2018-12-19 | A kind of hydraulic self-locking compression cylinder assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811551391.0A CN109404361A (en) | 2018-12-19 | 2018-12-19 | A kind of hydraulic self-locking compression cylinder assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109404361A true CN109404361A (en) | 2019-03-01 |
Family
ID=65459760
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811551391.0A Pending CN109404361A (en) | 2018-12-19 | 2018-12-19 | A kind of hydraulic self-locking compression cylinder assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109404361A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4929165A (en) * | 1986-06-30 | 1990-05-29 | Yoshiharu Inaba | Direct-pressure mold clamping mechanism |
| CN201856102U (en) * | 2010-11-05 | 2011-06-08 | 山东普利森集团有限公司 | Self-centering fixture |
| CN104400509A (en) * | 2014-10-15 | 2015-03-11 | 陕西启源科技发展有限责任公司 | Automatic centering fixture |
| CN207564122U (en) * | 2017-07-31 | 2018-07-03 | 德州普利森机床有限公司 | It is a kind of can reinforcement clamp automatic self-centering fixture |
| CN209164227U (en) * | 2018-12-19 | 2019-07-26 | 上海正玄精密机械有限公司 | A kind of hydraulic self-locking compression cylinder assembly |
-
2018
- 2018-12-19 CN CN201811551391.0A patent/CN109404361A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4929165A (en) * | 1986-06-30 | 1990-05-29 | Yoshiharu Inaba | Direct-pressure mold clamping mechanism |
| CN201856102U (en) * | 2010-11-05 | 2011-06-08 | 山东普利森集团有限公司 | Self-centering fixture |
| CN104400509A (en) * | 2014-10-15 | 2015-03-11 | 陕西启源科技发展有限责任公司 | Automatic centering fixture |
| CN207564122U (en) * | 2017-07-31 | 2018-07-03 | 德州普利森机床有限公司 | It is a kind of can reinforcement clamp automatic self-centering fixture |
| CN209164227U (en) * | 2018-12-19 | 2019-07-26 | 上海正玄精密机械有限公司 | A kind of hydraulic self-locking compression cylinder assembly |
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