CN109026862A - The hydraulic device of pressure adjustable - Google Patents
The hydraulic device of pressure adjustable Download PDFInfo
- Publication number
- CN109026862A CN109026862A CN201811056073.7A CN201811056073A CN109026862A CN 109026862 A CN109026862 A CN 109026862A CN 201811056073 A CN201811056073 A CN 201811056073A CN 109026862 A CN109026862 A CN 109026862A
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- Prior art keywords
- oil
- assembly
- piston
- hydraulic cylinder
- 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
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/02—Systems essentially incorporating special features for controlling the speed or actuating force of an output member
- F15B11/028—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the actuating force
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D7/00—Bending rods, profiles, or tubes
- B21D7/06—Bending rods, profiles, or tubes in press brakes or between rams and anvils or abutments; Pliers with forming dies
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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
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/024—Pressure relief valves
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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
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
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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
- F15B15/1423—Component parts; Constructional details
- F15B15/1447—Pistons; Piston to piston rod assemblies
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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
- F15B20/00—Safety arrangements for fluid actuator systems; Applications of safety devices in fluid actuator systems; Emergency measures for fluid actuator systems
-
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/50—Pressure control
- F15B2211/55—Pressure control for limiting a pressure up to a maximum pressure, e.g. by using a pressure relief valve
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Actuator (AREA)
Abstract
The present invention provides a kind of hydraulic device of pressure adjustable, and the hydraulic device of the pressure adjustable includes motor assembly, pump oil assembly, hydraulic assembly, piston assembly and work head assembly.Pump oil assembly includes plunger assembly and oil bag, and plunger assembly is connected to the output shaft of motor assembly and connection oil bag.Hydraulic assembly includes hydraulic cylinder and manual relief valve, and hydraulic cylinder is connected with pump oil assembly and is arranged along the axial direction of motor assembly, has the fuel feed hole and oil return hole of connection pump oil assembly on hydraulic cylinder；Manual relief valve is fixed on the side of hydraulic cylinder and connection oil bag, passes through the connection of control relief valve core or the rod chamber and rodless cavity of disconnection hydraulic cylinder.Piston assembly is axially disposed in hydraulic cylinder, and the oil duct with connection hydraulic cylinder two sides oil pocket in piston assembly is with the safety valve for being connected to oil bag, oil duct opening after piston assembly reaches movement travel, and piston assembly resets；Or when oil pressure is more than the oil pressure bearing value of safety valve, safety valve is opened, piston assembly resets.
Description
Technical field
The present invention relates to technical field of hydraulic pressure, and in particular to a kind of hydraulic device of pressure adjustable.
Background technique
Under the rapid development of China's economy, people's lives level is continuously improved, to major infrastructure and building construction
Demand it is increasing, it is also higher and higher to the quality requirement of engineering.Steel form is the weight that concrete constructs in engineering construction
Component part is wanted, it has the advantages that reducing operating cost, easily operated, saving material, performance is good.With the industrial age
It arrives, for steel form as the pillar in construction material, its specification quality affects the construction success or failure of China's building.
The process equipment of steel form is hydraulic device at present, and the tonnage of most hydraulic device is non-adjustable, if
It is standby to be processed during use according to the stroke of setting.For example, existing bending machine is exported due to pump oil component
Pressure can not be adjusted, and the stroke of piston can not change, this will be entirely limited curved angle.User when in use can not be with
The bending angle of the adjustment material to be bent of meaning, flexibility are poor.In addition, existing hydraulic device can not be adjusted due to its pressure
Can generally also there are the security risks such as detonation.
Summary of the invention
The present invention for overcome the deficiencies in the prior art, provides a kind of hydraulic device of pressure adjustable.
To achieve the goals above, the present invention provides a kind of hydraulic device of pressure adjustable, and the hydraulic of the pressure adjustable is set
Standby includes motor assembly, pump oil assembly, hydraulic assembly, piston assembly and work head assembly.Pump oil assembly includes plunger assembly
And oil bag, plunger assembly are connected to the output shaft of motor assembly and connection oil bag.Hydraulic assembly includes hydraulic cylinder and manual pressure release
Valve, hydraulic cylinder are connected with pump oil assembly and are arranged along the axial direction of motor assembly, have along hydraulic cylinder connection pump oil assembly into
Oilhole and oil return hole；Manual relief valve be fixed on the side of hydraulic cylinder and connection oil bag, by control relief valve core connection or
Disconnect the rod chamber and rodless cavity of hydraulic cylinder.Piston assembly is axially disposed in hydraulic cylinder, has connection liquid in piston assembly
The oil duct of cylinder pressure two sides oil pocket is with the safety valve for being connected to oil bag, oil duct opening after piston assembly reaches movement travel, two sides oil
Chamber is connected, and piston assembly resets；Or when oil pressure is more than the oil pressure bearing value of safety valve, safety valve is opened, piston assembly
It resets.Work head assembly includes quiet head frame and dynamic head frame, and quiet head frame is fixed on hydraulic cylinder, has an axially extending bore on quiet head frame,
Piston assembly, which is worn, penetrates the dynamic head frame that axially extending bore connection is located in quiet head frame, and dynamic head frame is back and forth transported under the action of piston assembly
It is dynamic.
An embodiment according to the present invention, piston assembly include piston component, limit assembly and safety valve.Piston group
Part includes piston head, piston rod and the reset spring being sheathed on piston rod, has the length along piston rod on piston head
The piston hole that direction opens up has a radial oil leak hole on piston rod.Limit assembly includes spacing head and gag lever post, gag lever post
It wears and penetrates piston hole, spacing head blocks piston hole.Safety valve is installed on piston component and is connected to radial oil leak hole.Quiet head frame protrudes into
In hydraulic cylinder, when the end of gag lever post moves to the end face of quiet head frame, spacing head opens piston hole, forms connection piston rod
The oil duct of two sides oil pocket, oil liquid flow into oil return hole through oil duct.
An embodiment according to the present invention, safety valve include safety valve spring, plugging block, steel ball and valve body, piston head
Upper to have mounting hole, valve body, which is worn, penetrates mounting hole, and mounting hole is opened or blocked to valve end, has on piston rod and makes a concession hole, safety
The bottom for making a concession hole is fixed in valve spring one end, and the other end connects plugging block, and radial oil leak hole, steel are opened or blocked to plugging block
Pearl is connected to valve body and opposite with plugging block.
An embodiment according to the present invention, quiet head frame include head holder, interconnecting piece, mounting post and sleeve.Interconnecting piece is set
It is placed in head holder, interconnecting piece protrudes into hydraulic cylinder and is fixed on hydraulic cylinder, has the axial direction passed through for piston rod logical on interconnecting piece
Hole.Mounting post and interconnecting piece are relatively arranged on the other end of head holder.Sleeve is sheathed on mounting post and rotates relative to mounting post,
The middle part of sleeve has circumferentially arranged arc groove.
An embodiment according to the present invention, quiet head frame further include locating plate, and locating plate is set to the top of sleeve and fixation
In mounting post, locating plate clamp sleeve.
An embodiment according to the present invention, dynamic head frame include that two bend arms that horizontal symmetrical is arranged and connection two are curved
The circular sliding slopes portion cranked arm, two bend arms are in outer expanding shape.
An embodiment according to the present invention, each bend arm include first support arm, second support arm, positioning pin and prevent
Wear sleeve, first support arm and the vertically parallel setting of second support arm, positioning pin, which is worn, penetrates first support arm and second support arm,
Anti-wear sleeve is sheathed on positioning pin and the rotation of relative positioning pin.
An embodiment according to the present invention, quiet head frame further include that arc is shaken hands, and the arc, which is shaken hands, to be set in pressure
On position where the center of gravity of adjustable hydraulic device.
An embodiment according to the present invention, pump oil assembly include the oil bag of two accordions, and the oil bag of two accordions is set
It is placed in the circumferential direction of motor assembly and connection plunger assembly, folding flexible fold is all had on each oil bag.
An embodiment according to the present invention, the hydraulic device of pressure adjustable further include handle, and handle is connected to hydraulic cylinder,
There is the switch for being electrically connected motor assembly on handle.
In conclusion the hydraulic device of pressure adjustable provided by the invention is on hydraulic cylinder by being arranged manual relief valve,
Manual relief valve is connected to oil bag, and the relief valve core by controlling manual relief valve can realize in hydraulic cylinder rod chamber and without bar
The connection or disconnection of chamber, user can discharge the release of hydraulic cylinder internal pressure power by manual relief valve during use,
Any required pressure value is obtained in the pressure limit of setting, to realize the control of piston assembly stroke, flexibly control to
The processing stage of rapidoprint.By the way that oil duct and safety valve are arranged in piston assembly, after piston assembly reaches movement travel
Oil duct is opened, and piston assembly resets, and realizes the reciprocating motion of hydraulic device.The setting of safety valve is then when oil pressure is more than safety
When the oil pressure bearing value of valve, safety valve is opened, and piston assembly resets.The setting of safety valve effectively solves existing hydraulic set
The problem of standby easy detonation.By being arranged safety valve in piston assembly, which not only be can accurately reflect in hydraulic cylinder
Pressure, while the design of oil circuit is also very ingenious succinct, enormously simplifies the oil piping system of hydraulic device.
For above and other objects of the present invention, feature and advantage can be clearer and more comprehensible, preferable implementation is cited below particularly
Example, and cooperate attached drawing, it is described in detail below.
Detailed description of the invention
Figure 1A show structure of the hydraulic device of the pressure adjustable of one embodiment of the invention offer under initial station and shows
It is intended to.
Figure 1B show structural schematic diagram of the hydraulic device of pressure adjustable shown in FIG. 1 under machining state.
Fig. 2 show the cross-sectional view of the hydraulic device of pressure adjustable shown in figure 1A vertically.
Fig. 3 show the cross-sectional view of the hydraulic device of pressure adjustable shown in figure 1A transversely.
Fig. 4 show the structural schematic diagram of piston assembly in the adjustable hydraulic device of power shown in figure 1A.
Fig. 4 A show the cross-sectional view of Fig. 4.
The structural schematic diagram of manual relief valve in Fig. 1 shown in Fig. 5.
Fig. 5 A show structural schematic diagram of the Fig. 5 under another visual angle.
Fig. 6 show the partial schematic diagram of quiet head frame.
Fig. 7 show the partial schematic diagram of dynamic head frame.
Fig. 8 show the structural schematic diagram of the oil bag of accordion.
Fig. 9 show the structural schematic diagram of hydraulic cylinder.
Fig. 9 A show the structural schematic diagram at another visual angle of hydraulic cylinder in Fig. 9.
Cross-sectional view of Fig. 9 A along line A-A shown in Fig. 9 B.
Figure 10 show the turning with schematic diagram of motor assembly and hydraulic assembly.
Specific embodiment
As shown in Figure 1A to Fig. 3, the hydraulic device of pressure adjustable provided in this embodiment includes that motor assembly 1, pump oil are total
At 2, hydraulic assembly 3, piston assembly 4 and work head assembly 5.Pump oil assembly 2 includes plunger assembly 21 and oil bag 22, plunger
Component 21 is connected to the output shaft of motor assembly 1 and connection oil bag 22.Hydraulic assembly 3 includes hydraulic cylinder 31 and manual relief valve
32, hydraulic cylinder 31 is connected with pump oil assembly 2 and has connection pump oil total in the axial direction setting of motor assembly 1, hydraulic cylinder 31
At 2 fuel feed hole 311 and oil return hole 312.Manual relief valve 32 is fixed on the side of hydraulic cylinder 31 and connection oil bag 22, passes through
It controls relief valve core connection or disconnects the rod chamber and rodless cavity of hydraulic cylinder.Piston assembly 4 is axially disposed at hydraulic cylinder
The safety valve 43 that there is the oil duct of connection hydraulic cylinder two sides oil pocket in 31, in piston assembly 4 and be connected to oil bag 22, when piston is total
Oil duct is opened after reaching movement travel at 4, and piston assembly 4 resets；Or when oil pressure is more than the oil pressure bearing value of safety valve 43
When, safety valve 43 is opened, and hydraulic cylinder two sides oil pocket connection, piston assembly resets.Work head assembly 5 includes quiet head frame 51 and moves
Head frame 52, quiet head frame 51 are fixed on hydraulic cylinder 31, have an axially extending bore on quiet head frame 51, piston assembly 4, which is worn, penetrates axially extending bore
Connection is located at the dynamic head frame 52 in quiet head frame 51, and dynamic head frame 52 moves back and forth under the action of piston assembly 4.
In this present embodiment, the setting of manual relief valve 32 realizes in hydraulic cylinder 31 oil pressure in the oil pressure range of setting
Interior any control, user can control oil pressure according to demand when in use to reach the stroke of control piston total 4.Such as exist
In bending machine, the bending of reinforcing bar different angle can be realized by manual relief valve 32, using very flexibly.Pacified by setting
Full valve 43, when the oil pressure in hydraulic cylinder 31 is more than the setting value of safety valve 43, safety valve 43 is opened, oil pressure in hydraulic cylinder 31
Decline, effectively avoids the problem that detonation.
In this present embodiment, as shown in figs. 5 and 5, there is the first oilhole 321, the second oilhole on manual relief valve 32
322 and four fixation holes 323, hand-operated hydraulic valve 32 is fixed on hydraulic cylinder 31, the first oilhole 321 by four fixation holes 323
The rodless cavity being connected in hydraulic cylinder, the second oilhole 322 are connected to rod chamber, and rod chamber is connected to oil bag 22 through oil return hole 312, lets out
Pressure valve spool 325 blocks or the rod chamber and rodless cavity of connection hydraulic cylinder.User when in use, passes through pressing relief valve spanner
324 carry out pull-up relief valve core 325, and the rod chamber of hydraulic cylinder is connected to through the first oilhole 321 with the second oilhole 322 with rodless cavity,
Oil liquid in rodless cavity flows into rod chamber by the first oilhole 321 and the second oilhole 322 and flows back to oil bag 22 through oil return hole 312,
Pressure discharges in rodless cavity, and piston assembly 4 is retracted into initial position.In this present embodiment, as shown in Fig. 1 to Fig. 3, this implementation
The hydraulic device of the pressure adjustable of example is bending machine, can treat bend 100 by the manual relief valve 32 of control and carry out arbitrarily
The bending of angle, using very flexibly and conveniently.However, the present invention is not limited in any way the structure of manual relief valve 32.
As illustrated in figures 4 and 4, in this present embodiment, piston assembly 4 include piston component 41, limit assembly 42 and
Safety valve 43.Piston component 41 includes piston head 411, piston rod 412 and the reset spring being sheathed on piston rod 412
413, there is on piston head 411 piston hole 4111 opened up along the length direction of piston rod, there is a diameter on piston rod 412
To oil leak hole 4121.Limit assembly 42 includes spacing head 421 and gag lever post 422, and gag lever post 422, which is worn, penetrates piston hole 4111, limit
First 421 block piston hole 4111.Safety valve 43 is installed on piston component 41 and is connected to radial oil leak hole 4121.Quiet head frame 51 is stretched
Enter in hydraulic cylinder 31, when the end of gag lever post 422 moves to the end face of quiet head frame 51, spacing head 421 opens piston hole
4111, the oil duct of connection 41 two sides oil pocket of piston component is formed, oil liquid flows into oil return hole 312 through oil duct.
The release of oil liquid is by being arranged on piston component 41 in the hydraulic device of pressure adjustable provided in this embodiment
Limit assembly 42 realize.When end face of the limit assembly not in contact with quiet head frame 51, the oil pressure in rodless cavity constantly increases
Add, piston assembly 4 constantly moves ahead.When the end face of quiet head frame 51 is touched in the end of limit assembly 42, spacing head 421, which is opened, lives
Consent 4111, the oil liquid in rodless cavity enter in rod chamber through piston hole and flow into oil return hole 312, and oil pressure disappears, piston rod
412 reset under the action of reset spring 413, and dynamic head frame 52 is retracted with piston rod 412, realize the automatic reciprocating of dynamic head frame 52
Movement.The design of limit assembly 42 and its cooperation between work head assembly 5 are very exquisite, entire pressure relief and
Oil circuit is all very simple, efficiently solves at present hydraulic device detonation or oil leak etc. because caused by oil circuit is complicated on the market
Problem.In this present embodiment, the end face triggering gag lever post 422 that quiet head frame 51 protrudes into hydraulic cylinder moves, therefore in assembly, it can lead to
Cross adjust quiet head frame 51 protrude into distance to adjust the stroke of piston component 41, or can also be by adjusting the length of gag lever post 422
Degree is to adjust stroke.However, the present invention is not limited in any way this.In other embodiments, it can be set in the inner sidewall of hydraulic cylinder
Trigger board is set to trigger the movement of gag lever post 422, work head assembly can not need to protrude into hydraulic cylinder at this time.
In this present embodiment, as shown in Fig. 9 to Fig. 9 B, hydraulic cylinder 31 is in hollow tubular, multiple fuel feed holes 311 and is returned
Oilhole 312 is formed in the bottom of hydraulic cylinder 31, has the way to cycle oil 313 of connection oil return hole 312 in the side wall of hydraulic cylinder 31,
Have oil return into hole (due to visual angle, not shown go out) in the interior side-wall surface of hydraulic cylinder, opens and live when spacing head 421
When consent 4111, the oil liquid in rodless cavity enters oil return hole 312 into hole and way to cycle oil 313 through piston hole 4111, oil return.
However, the present invention is not limited in any way this.In other embodiments, way to cycle oil 313 may be provided at the outside of hydraulic cylinder.
In this present embodiment, oil return is set to the forward extreme position of piston component 41 into hole, and oil return at this time is distinguished into hole
It is connected with the oil pocket of 41 two sides of piston component, the hydraulic oil in the oil pocket of two sides can carry out quick draining into hole by oil return,
Improve the speed of draining.
In this present embodiment, safety valve 43 includes safety valve spring 431, plugging block 432, steel ball 433 and valve body 434,
There is mounting hole, valve body 434, which is worn, penetrates mounting hole, and mounting hole, piston rod are opened or blocked in 434 end of valve body on piston head 411
Have on 412 and make a concession hole 4122, the bottom for making a concession hole 4122 is fixed in 431 one end of safety valve spring, and the other end connects plugging block
432, radial oil leak hole 4121 is opened or blocked to plugging block 432, and steel ball 433 is connected to valve body 434 and opposite with plugging block 432.
When the pressure of rodless cavity is smaller and is less than the elastic force of safety valve spring 431, plugging block 432 blocks oil leak hole 4121, rodless cavity
Interior pressure gradually increases, and piston assembly 4 constantly moves ahead.When the pressure in rodless cavity is greater than the elastic force of safety valve spring 431
When, plugging block 432 opens radial oil leak hole 4121, and oil liquid enters in radial oil leak hole and push steel ball 433, makees in the pressure
Under, steel ball 433 and valve body 434 open mounting hole, and hydraulic cylinder two sides oil pocket is connected to, oil pressure decline in hydraulic cylinder.
The hydraulic device of pressure adjustable provided in this embodiment is a bending machine.However, the present invention does not make any limit to this
It is fixed.In other embodiments, the hydraulic device of pressure adjustable can be cutting nipper, cut and expand pincers or expander etc..
In this present embodiment, as shown in Figure 6 and Figure 7, quiet head frame 51 includes head holder 511, connection in work head assembly 5
Portion 512, mounting post 513, sleeve 514 and locating plate 515.Interconnecting piece 512 is set to head holder 511, and interconnecting piece 512 protrudes into
In hydraulic cylinder 31 and it is fixed on hydraulic cylinder 31, there is the axially extending bore 5121 passed through for piston rod 412 on interconnecting piece 512.Installation
Column 513 and interconnecting piece 512 are relatively arranged on the other end of head holder 511.Sleeve 514 is sheathed on mounting post 513 and opposite installation
Column 513 rotates, and the middle part of sleeve 514 has circumferentially arranged arc groove 5141.Locating plate 515 is set to the upper of sleeve
Mounting post 513 is simultaneously fixed in side, 515 clamp sleeve 514 of locating plate.Dynamic head frame 52 includes two bendings of horizontal symmetrical setting
The circular sliding slopes portion 522 of two bend arms of arm 521 and connection, two bend arms 521 are in outer expanding shape.Each bend arm 521 is
Including first support arm 5211, second support arm 5212, positioning pin 5213 and anti-wear sleeve 5214, first support arm 5211 and
The vertically parallel setting of two support arm 5212, positioning pin 5213, which is worn, penetrates first support arm 5211 and second support arm 5211, anti-wear
Sleeve 5214 is sheathed on positioning pin 5213 and relative positioning pin 5213 rotates.
In this present embodiment, in Fig. 1, material 100 to be bent is placed on the accommodating between quiet head frame 51 and dynamic head frame 52
In space, motor assembly 1 drives 2 pump oil of pump oil assembly, and the oil liquid pumped out enters in the hydraulic cylinder 31 of hydraulic assembly 3, rodless cavity
Inside there is pressure to increase, which pushes piston assembly 4 that dynamic head frame 52 is driven to move ahead, the anti-wear sleeve on two bend arms 521
5214 and 514 three's collective effect of sleeve in material 100 to be bent, material to be bent is bent.The angle of material bending
Flexible modulation can be carried out by manual relief valve 32.In this present embodiment, during bending, anti-wear sleeve 5214 and set
Cylinder 514 is in rotary state, which can greatly reduce the abrasion of dynamic head frame 52 and quiet head frame 51 during bending, prolong
The service life of long work head assembly 5.Further, anti-wear sleeve 5214 is fixed using positioning pin 5213, sleeve
514 are limited using locating plate 515, are replaced very convenient.
In this present embodiment, quiet head frame further includes that arc shakes hands 6, and arc, which is shaken hands, 6 to be set in the hydraulic of pressure adjustable
On position where the center of gravity of equipment, the hand-held use of user is greatly facilitated.Further, the hydraulic device of pressure adjustable
It further include handle 7, handle 7 is connected to hydraulic cylinder 31, has the switch 71 for being electrically connected motor assembly 1 on handle 7.
In this present embodiment, as shown in Figure 10, plunger assembly 21 is three plungers comprising plunger body 211 and insertion column
Three radial plungers 212 in plug body.Motor assembly 1 includes that driving motor 11 is exported with driving motor 11 is sequentially connected to
The eccentric shaft 12 and eccentric wheel 13 of axis, eccentric wheel 13 are in contact with three radial plungers 212, and driving radial plunger carries out pump oil.
In this present embodiment, pump oil assembly 2 further includes the back cavity 23 for wrapping up plunger body 211, and motor assembly 1 also includes package driving
The rear cover 14 of motor, eccentric shaft and eccentric wheel.In this present embodiment, motor assembly 1, pump oil assembly 2, hydraulic assembly 3, work
Plug assembly 4 and work head assembly 5 are sequentially connected along the axial direction of bending machine；It is corresponding, hydraulic cylinder 31, back cavity 23 and after
Lid 14 is successively axially connecting.The setting is so that the structure of whole equipment is very compact.
In this present embodiment, pump oil assembly 2 includes the oil bag 22 of two accordions, and the oil bag 22 of two accordions is arranged
In driving motor circumferential direction and be contained in rear cover 14, two oil bags 22 are connected to plunger bodies 211.As shown in figure 8, each oil
Folding flexible fold is all had on bag, the oil bag capacity large volume of this kind of structure is small, is highly advantageous to and reduces whole equipment
Volume.
In conclusion the hydraulic device of pressure adjustable provided by the invention is on hydraulic cylinder by being arranged manual relief valve,
Manual relief valve is connected to oil bag, and the relief valve core by controlling manual relief valve can realize in hydraulic cylinder rod chamber and without bar
The connection or disconnection of chamber, user can discharge the release of hydraulic cylinder internal pressure power by manual relief valve during use,
Any required pressure value is obtained in the pressure limit of setting, to realize the control of piston assembly stroke, flexibly control to
The processing stage of rapidoprint.By the way that oil duct and safety valve are arranged in piston assembly, after piston assembly reaches movement travel
Oil duct is opened, and piston assembly resets, and realizes the reciprocating motion of hydraulic device.The setting of safety valve is then when oil pressure is more than safety
When the oil pressure bearing value of valve, safety valve is opened, and piston assembly resets.The setting of safety valve effectively solves existing hydraulic set
The problem of standby easy detonation.By being arranged safety valve in piston assembly, which not only be can accurately reflect in hydraulic cylinder
Pressure, while the design of oil circuit is also very ingenious succinct, enormously simplifies the oil piping system of hydraulic device.
Although the present invention is disclosed above by preferred embodiment, however, it is not intended to limit the invention, this any known skill
Skill person can make some changes and embellishment without departing from the spirit and scope of the present invention, therefore protection scope of the present invention
Subject to view claims range claimed.
Claims (10)
1. a kind of hydraulic device of pressure adjustable characterized by comprising
Motor assembly；
Pump oil assembly, including plunger assembly and oil bag, the plunger assembly are connected to the output shaft of motor assembly and connection oil bag；
Hydraulic assembly, including hydraulic cylinder and manual relief valve, hydraulic cylinder are connected with pump oil assembly and along the axial directions of motor assembly
It is arranged, there is the fuel feed hole and oil return hole of connection pump oil assembly on the hydraulic cylinder；The manual relief valve is fixed on hydraulic cylinder
Side and connection oil bag, pass through control relief valve core connection or disconnect hydraulic cylinder rod chamber and rodless cavity；
Piston assembly is axially disposed in hydraulic cylinder, has the oil duct of connection hydraulic cylinder two sides oil pocket in the piston assembly
With the safety valve for being connected to oil bag, oil duct is opened after piston assembly reaches movement travel, and two sides oil pocket is connected, and piston assembly is multiple
Position；Or when oil pressure is more than the oil pressure bearing value of safety valve, safety valve is opened, piston assembly resets；
Work head assembly, including quiet head frame and dynamic head frame, quiet head frame are fixed on hydraulic cylinder, have an axially extending bore on quiet head frame,
Piston assembly, which is worn, penetrates the dynamic head frame that axially extending bore connection is located in quiet head frame, and dynamic head frame is back and forth transported under the action of piston assembly
It is dynamic.
2. the hydraulic device of pressure adjustable according to claim 1, which is characterized in that the piston assembly includes:
Piston component has including piston head, piston rod and the reset spring being sheathed on piston rod, on piston head one along work
The piston hole that the length direction of stopper rod opens up has a radial oil leak hole on piston rod；
Limit assembly, including spacing head and gag lever post, gag lever post, which is worn, penetrates piston hole, and spacing head blocks piston hole；
Safety valve is installed on piston component and is connected to radial oil leak hole；
Quiet head frame protrudes into hydraulic cylinder, and when the end of gag lever post moves to the end face of quiet head frame, spacing head opens piston hole, shape
At the oil duct of connection piston rod two sides oil pocket, oil liquid flows into oil return hole through oil duct.
3. the hydraulic device of pressure adjustable according to claim 2, which is characterized in that the safety valve includes safety valve bullet
Spring, plugging block, steel ball and valve body have mounting hole on piston head, and valve body, which is worn, penetrates mounting hole, and peace is opened or blocked to valve end
Hole is filled, has on piston rod and makes a concession hole, the bottom for making a concession hole is fixed in safety valve spring one end, and the other end connects plugging block, envelope
Radial oil leak hole is opened or blocked to sprue, and steel ball is connected to valve body and opposite with plugging block.
4. the hydraulic device of pressure adjustable according to claim 1, which is characterized in that the quiet head frame includes:
Head holder；
Interconnecting piece, is set to the head holder, and interconnecting piece protrudes into hydraulic cylinder and is fixed on hydraulic cylinder, has on interconnecting piece for work
The axially extending bore that stopper rod passes through；
Mounting post is relatively arranged on the other end of head holder with the interconnecting piece；
Sleeve is sheathed on the mounting post and rotates relative to mounting post, and the middle part of the sleeve has circumferentially arranged arc
Groove.
5. the hydraulic device of pressure adjustable according to claim 4, which is characterized in that the quiet head frame further includes positioning
Piece, the locating plate are set to the top of sleeve and are fixed on mounting post, locating plate clamp sleeve.
6. the hydraulic device of pressure adjustable according to claim 1, which is characterized in that the dynamic head frame includes horizontal symmetrical
The circular sliding slopes portion for two bend arms of two bend arms and connection being arranged, two bend arms are in outer expanding shape.
7. the hydraulic device of pressure adjustable according to claim 6, which is characterized in that each bend arm includes first
Arm, second support arm, positioning pin and anti-wear sleeve, first support arm and the vertically parallel setting of second support arm, positioning pin
It wears and penetrates first support arm and second support arm, anti-wear sleeve is sheathed on positioning pin and the rotation of relative positioning pin.
8. the hydraulic device of pressure adjustable according to claim 1, which is characterized in that the quiet head frame further includes that arc is held
Hand, the arc are shaken hands on the position being set to where the center of gravity of the hydraulic device in pressure adjustable.
9. the hydraulic device of pressure adjustable according to claim 1, which is characterized in that the pump oil assembly includes two pleats
The oil bag of corrugation, the oil bag of two accordions are set to the circumferential direction of motor assembly and connection plunger assembly, have on each oil bag
There is folding flexible fold.
10. the hydraulic device of pressure adjustable according to claim 1, which is characterized in that the hydraulic of the pressure adjustable is set
Standby further includes handle, and the handle is connected to hydraulic cylinder, has the switch for being electrically connected motor assembly on the handle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811056073.7A CN109026862B (en) | 2018-09-11 | 2018-09-11 | Pressure-adjustable bending machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811056073.7A CN109026862B (en) | 2018-09-11 | 2018-09-11 | Pressure-adjustable bending machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109026862A true CN109026862A (en) | 2018-12-18 |
| CN109026862B CN109026862B (en) | 2023-08-08 |
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ID=64621060
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811056073.7A Active CN109026862B (en) | 2018-09-11 | 2018-09-11 | Pressure-adjustable bending machine |
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| Country | Link |
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| CN (1) | CN109026862B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110052541A (en) * | 2019-03-04 | 2019-07-26 | 浙江工业大学 | A kind of no rivet tool |
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| CN206184986U (en) * | 2016-11-15 | 2017-05-24 | 杭州欧盾机电有限公司 | Punching machine |
| CN107100815A (en) * | 2017-05-23 | 2017-08-29 | 杭州众拓科技有限公司 | Small-sized electric hydraulic planger pump |
| CN206770309U (en) * | 2017-04-11 | 2017-12-19 | 杭州欧盾机电有限公司 | Hydraulic means and the bending straightener with hydraulic means |
| CN107497970A (en) * | 2017-08-10 | 2017-12-22 | 浙江工业大学 | A kind of light-duty steel bar quick breaker |
| CN107795451A (en) * | 2017-11-29 | 2018-03-13 | 欧盾科技有限公司 | Integrated high pressure oil pump |
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2018
- 2018-09-11 CN CN201811056073.7A patent/CN109026862B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206184986U (en) * | 2016-11-15 | 2017-05-24 | 杭州欧盾机电有限公司 | Punching machine |
| CN206770309U (en) * | 2017-04-11 | 2017-12-19 | 杭州欧盾机电有限公司 | Hydraulic means and the bending straightener with hydraulic means |
| CN107100815A (en) * | 2017-05-23 | 2017-08-29 | 杭州众拓科技有限公司 | Small-sized electric hydraulic planger pump |
| CN107497970A (en) * | 2017-08-10 | 2017-12-22 | 浙江工业大学 | A kind of light-duty steel bar quick breaker |
| CN107795451A (en) * | 2017-11-29 | 2018-03-13 | 欧盾科技有限公司 | Integrated high pressure oil pump |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110052541A (en) * | 2019-03-04 | 2019-07-26 | 浙江工业大学 | A kind of no rivet tool |
| CN110052541B (en) * | 2019-03-04 | 2024-04-12 | 浙江工业大学 | Hand-held rivet-free riveting tool |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109026862B (en) | 2023-08-08 |
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