CN106968910B - Light-weight electric hydraulic planger pump - Google Patents
Light-weight electric hydraulic planger pump Download PDFInfo
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- CN106968910B CN106968910B CN201710369049.8A CN201710369049A CN106968910B CN 106968910 B CN106968910 B CN 106968910B CN 201710369049 A CN201710369049 A CN 201710369049A CN 106968910 B CN106968910 B CN 106968910B
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- oil
- plunger
- piston
- switch
- hole
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
- F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Details Of Reciprocating Pumps (AREA)
- Hydraulic Motors (AREA)
Abstract
The present invention provides a kind of light-weight electric hydraulic planger pump, including the pump housing, driving device, at least one hydraulic pumping unit and reversing arrangement.Pump body has oil pocket.Driving device is set to the pump housing, and driving device includes motor and eccentric wheel, and eccentric wheel is connected to the output shaft of motor.At least one hydraulic pumping unit is connected to the circumferential direction of oil pocket, and each hydraulic pumping unit includes fluting cylinder, piston, piston spring, cunning switch, plunger and check valve.The lateral wall of fluting cylinder has the axial oil groove of connection oil pocket.Piston is set in fluting cylinder, and the bottom of piston is connected with eccentric wheel.Piston spring is sheathed on piston.Descent of piston, cunning switch, which is opened, completes oil suction；Piston stroking upward, cunning switch are closed.Plunger is connected to fluting cylinder, and the axis of plunger is vertical with the fluting axis of cylinder.Check valve is connected to plunger.Reversing arrangement is connected between check valve and executing agency, and two kinds of opposite oil circulations in direction are provided for executing agency.
Description
Technical field
The present invention relates to a kind of hydraulic pumps, and more particularly to a kind of light-weight electric hydraulic planger pump.
Background technology
Plunger pump is a kind of important hydraulic device, it is generally by motor drive, by the machinery of motor shaft rotary motion
It can be converted into hydraulic energy, principle is moved back and forth in cylinder body by plunger so that plunger head oil pocket volume changes
To realize oil suction and pressure oil.For some occasions, such as fire-fighting, building field, the miniaturization of tools production while, also requires column
Plug pump develops to small-sized, miniature direction.
Since plunger pump invention application, the working characteristics such as pressure, flow, efficiency of plunger pump determine entire hydraulic pressure
The performance of system, in order to improve the pressure of hydraulic system, it is necessary to improve the output pressure of hydraulic pump.High output pressure makes column
The appearance and size for filling in pump is larger, inconvenient loop combination arrangement, and use is very inconvenient.Further, in existing plunger pump
In order to realize the bidirectional circulating of oil circuit, need that the larger switching valve of volume is arranged in the pump housing, to further increase plunger
The size and weight of pump.
Invention content
The present invention for overcome the deficiencies in the prior art, provides a kind of light-weight electric hydraulic planger pump.
To achieve the goals above, the present invention provides a kind of light-weight electric hydraulic planger pump, including the pump housing, driving device,
At least one hydraulic pumping unit and reversing arrangement.Pump body has oil pocket.Driving device is set to the pump housing, driving device packet
Motor and eccentric wheel are included, eccentric wheel is connected to the output shaft of motor.At least one hydraulic pumping unit is connected to the circumferential direction of oil pocket, often
One hydraulic pumping unit includes fluting cylinder, piston, piston spring, cunning switch, plunger and check valve.Cylinder slot in hollow
Structure, the lateral wall for cylinder of slotting have the axial oil groove of connection oil pocket.Piston be set to fluting cylinder in, the bottom of piston with
Eccentric wheel is connected.Piston spring is sheathed on piston.Cunning switch is set in fluting cylinder, and descent of piston, cunning switch is beaten
It opens, hydraulic oil is sucked into through axial oil groove and cunning switch in the cavity of top land；Piston stroking upward, cunning switch are closed.Column
Plug is connected to fluting cylinder, and the axis of plunger is vertical with the fluting axis of cylinder, by top land while cunning switch is closed
Cavity in hydraulic oil pressure to plunger in.Check valve is connected to plunger.Reversing arrangement be connected to check valve and executing agency it
Between, provide two kinds of opposite oil circulations in direction for executing agency.
An embodiment according to the present invention, reversing arrangement include the oil inlet pipe being arranged in the pump housing, the first oil duct, the second oil
Road, the first oil return pipe, the second oil return pipe and it is arranged in the commutation portion of the side of the pump housing.Oil inlet pipe is connected to each hydraulic pump dress
Set interior check valve, the first oil duct and the second oil duct are connected with two cavitys in executing agency respectively, the first oil return pipe and
Second oil return pipe is connected with oil pocket respectively.Commutation portion includes inverting seat, sleeve, reversing piece and control piece.Inverting seat has diameter
To through-hole, the lower section for being formed in radial through-hole and the oil inlet pore being connected with oil inlet pipe, be connected with the first oil duct
One oil hole, the second oil hole being connected with the second oil duct, the first oil return pore being connected with the first oil return pipe and with
The second oil return pore that second oil return pipe is connected.Sleeve wears the side wall of radial through-hole and sleeve with multiple circumferentially distributed
Oilhole.Reversing piece is set in sleeve, plugging block there are three tools on reversing piece, and oil groove is formed between two neighboring plugging block.
Control piece driving reversing piece slides in sleeve.
When reversing arrangement is located at the first station, the second plugging block blocks oil inlet pore, and fluid does not enter reversing arrangement.
When reversing arrangement is located at second station, control piece drives reversing piece to a Slideslip, and the first plugging block blocks the
One oil return pore, the first oil groove are connected to oil inlet pore and the first oil hole, and the second oil groove is connected to the second oil hole and the second oil return
Pore, fluid through on oil inlet pipe, sleeve oilhole and the first oil duct enter the first cavity of executing agency, executing agency's compression
Second cavity, fluid in the second cavity through on the second oil duct, sleeve oilhole and the second oil return pipe enter oil pocket；
When reversing arrangement is located at 3rd station, control piece drives reversing piece to another Slideslip, and third plugging block blocks
Second oil return pore, the second oil groove are connected to oil inlet pore and the second oil hole, and the first oil groove is connected to the first oil hole and first time
Oil pipe hole, fluid through on oil inlet pipe, sleeve oilhole and the second oil duct enter the second cavity of executing agency, executing agency's pressure
Contract the first cavity, the fluid in the first cavity through on the first oil duct, sleeve oilhole and the first oil return pipe enter oil pocket.
An embodiment according to the present invention, control piece include hand-held part and the first control ring, and hand-held part is set in inverting seat
End and drive the rotation of the first control ring, there are two arc groove, two arc grooves difference for tool on the madial wall of the first control ring
It is arranged at the both ends of reversing piece, driving reversing piece slides in sleeve.
An embodiment according to the present invention, control piece further include the second control ring and motor switch, the second control ring it is interior
Portion has groove, has spring contact on motor switch, when hand-held part drive the second control ring to rotate so that spring contact with it is recessed
Electric motor starting when slot is in contact.
An embodiment according to the present invention, cunning switch include switch plunger, switch return spring, stop bit disk and throttling
Disk.Switch plunger moves back and forth under the driving of piston.Switch return spring is sheathed on switch plunger.Stop bit disk is connected to
The top of switch plunger.Throttling plate is set to side of the stop bit disk far from switch plunger.
An embodiment according to the present invention, check valve include valve body, return spring and steel ball.There is oil outlet on valve body.
Return spring is connected to one end of valve body.Steel ball is connected to return spring and opposite with plunger, when the oil pressure of plunger output is more than
When the deformation pressure of return spring, steel ball is open-top, and hydraulic oil enters valve body and flowed out through oil outlet.
An embodiment according to the present invention, each hydraulic pumping unit further include safety valve, and the side wall of plunger has relief hole,
Safety valve is connected to plunger by relief hole.
An embodiment according to the present invention, driving device further includes the balance weight being arranged on camshaft, along eccentric wheel
Radial direction, the opposite direction in eccentric wheel is arranged in balance weight.
An embodiment according to the present invention, driving device further include retarder, ball bearing, bearing seal and axle sleeve.
There are at least two gears, the output shaft of motor to be meshed at least two gears in retarder.Ball bearing is connected to deceleration
The power output end of device.Bearing seal connects ball bearing.Axle sleeve is set to the inside of ball bearing and is connected with camshaft
It connects.
An embodiment according to the present invention, driving device include radiating block, have axial radiating groove on radiating block, axial to dissipate
Heat channel is oppositely arranged with the trepanning at the top of motor.
In conclusion light-weight electric hydraulic planger pump provided by the invention is driven by eccentric wheel in hydraulic pumping unit
Piston and axis of the axis perpendicular to fluting cylinder that plunger is arranged, the setting make the axis of executing agency and the axis of motor
It is perpendicular, substantially reduce the axial dimension of motor so that the size of entire plunger pump more minimize with it is compact.Further
, simple and small reversing arrangement is arranged by adding oil circuit in the pump housing and realizes the bidirectional circulating of oil circuit, is subtracted significantly
The small volume and weight of plunger pump, while the working efficiency of plunger pump is also greatly improved.
For above and other objects of the present invention, feature and advantage can be clearer and more comprehensible, preferred embodiment cited below particularly,
And coordinate attached drawing, it is described in detail below.
Description of the drawings
Fig. 1 show the decomposition diagram of the light-weight electric hydraulic planger pump of one embodiment of the invention offer.
Fig. 2 show the decomposition diagram of reversing arrangement in Fig. 1.
Fig. 3 show the structural schematic diagram of inverting seat in Fig. 2.
Fig. 4 show the assembling schematic diagram between inverting seat, sleeve, reversing piece and the first control ring.
Fig. 5 show the assembling schematic diagram of sleeve and reversing piece.
Fig. 6 show the assembly decomposition diagram of piston and cunning switch in Fig. 1.
Fig. 7 show the oil circuit schematic diagram of light-weight electric hydraulic planger pump shown in FIG. 1.
Fig. 8 show the structural schematic diagram that reversing arrangement is located under the first station.
Fig. 9 show the structural schematic diagram that reversing arrangement is located under second station.
Figure 10 show the structural schematic diagram that reversing arrangement is located under 3rd station.
Figure 11 show the structural schematic diagram of the motor switch used with the second control ring assembly in Figure 10.
Specific implementation mode
As shown in Figure 1, situation electric hydaulic plunger pump provided in this embodiment includes the pump housing 1, driving device 2, at least one
A hydraulic pumping unit 3 and reversing arrangement 4.The pump housing 1 has oil pocket (not shown).Driving device 2 is set to the pump housing 1, driving dress
It includes motor 21 and eccentric wheel 22 to set 2, and eccentric wheel 22 is connected to the output shaft of motor 21.At least one hydraulic pumping unit 3 connects
In the circumferential direction of oil pocket.In this present embodiment, light-weight electric hydraulic planger pump includes two hydraulic pressure for being symmetricly set on oil pocket circumferential direction
Pump installation, the setting make plunger pump operate steadily, and substantially reduce the noise of plunger pump operation.However, the present invention to this not
It is limited in any way.In other embodiments, light-weight electric hydraulic planger pump may include one or three or more hydraulic pump dress
It sets.
In this present embodiment, motor 21 uses the lithium battery power supply of hand-held quickly-chargeable.However, the present invention to this not
It is limited in any way.In other embodiments, the mode that external power supply can be used in motor 21 is powered.
Each hydraulic pumping unit 3 include fluting cylinder 31, piston 32, piston spring, cunning switch 33, plunger 34 and unidirectionally
Valve 35.Cylinder 31 of slotting is in hollow structure, and the lateral wall of fluting cylinder 31 has the axial oil groove 311 of connection oil pocket.Piston 32
It is set in fluting cylinder 31, the bottom of piston 32 is connected with eccentric wheel 22, and under the driving of eccentric wheel 22, piston 32 is being opened
Sliding in slot cylinder 31, the two are in snug sliding fit state.Preferably, the fit clearance both being arranged reach 0.005mm with
Under.Piston spring is sheathed on piston 32.In this present embodiment, the microcephaly of the Diameter Gradual Change of piston spring, piston spring is mounted on
The flat bottom of piston 32, the major part of piston spring are mounted on the conical nose of fluting cylinder 31.
In this present embodiment, the size of the piston in two hydraulic pumping units 3 differs, the ruler of one of piston 32 '
Very little is twice of another piston 32, which can increase considerably the oil mass output of plunger pump in certain field of load；And
After stress reaches a certain level, plunger pump can reduce the speed of service and increase the pressure of output.However, the present invention does not make this
Any restriction.In other embodiments, the size of plunger can be identical in more than two hydraulic pumping units.
Cunning switch 33 is set in fluting cylinder 31.When downlink under the action of piston spring of piston 32, piston 32
The cavity at top is pumped into certain vacuum degree, at this point, cunning switch 33 is opened under atmospheric pressure, hydraulic oil is through axial oil
In the cavity at the top that slot 311 and cunning switch 33 are sucked into piston 32.When eccentric wheel 22 drives 32 uplink of piston, cunning switch
33 close.Descent of piston refers to that the direction of motion of piston 32 is the direction far from cunning switch 33, the movement side of piston stroking upward
To opposite with the direction of motion of descent of piston.Plunger 34 is connected to fluting cylinder 31, axis and the fluting cylinder 31 of plunger 34
Axis is vertical.In this present embodiment, the side wall of cylinder of slotting has a step-like oilhole 312, and plunger 34 passes through the step-like oil
Hole 312 is connected with fluting cylinder 31, and to prevent oil liquid leakage, is additionally provided with sealing ring between the two.However, the present invention couple
This is not limited in any way.It will be in the hydraulic oil pressure to plunger 34 in the cavity at 32 top of piston while cunning switch 33 is closed.
Check valve 35 connects plunger 34.Reversing arrangement 4 is connected between check valve 35 and executing agency 100, is provided for executing agency 100
The opposite oil circulation in two kinds of directions.
In this present embodiment, as shown in Figures 2 to 5, reversing arrangement 4 includes the oil inlet pipe 411 being arranged in the pump housing 1, the
One oil duct 412, the second oil duct 413, the first oil return pipe 414 and the second oil return pipe 415 and it is arranged in the commutation portion of 1 side of the pump housing
42, oil inlet pipe 411 is connected to the check valve 35 in each hydraulic pumping unit, the first oil duct 412 and the second oil duct 413 respectively with hold
Row two cavitys within the organization are connected, and the first oil return pipe 414 and the second oil return pipe 415 are connected with oil pocket respectively.Commutation portion
42 include inverting seat 421, sleeve 422, reversing piece 423 and control piece 424.Inverting seat 421 has radial through-hole 4211 and oil inlet
Oil inlet pore 421a that pipe is connected, the first oil hole 421b being connected with the first oil duct, be connected with the second oil duct
Two oil hole 421c, the first oil return pore 421d being connected with the first oil return pipe and it is connected with the second oil return pipe 415
Second oil return pore 421e.Sleeve 422 wears radial through-hole 4211 and the side wall of sleeve 422 has multiple circumferentially distributed oil
Hole.Reversing piece 423 is set in sleeve 422 and can be slided in sleeve 422, and the two is in snug sliding fit state.Reversing piece
Tool forms oil groove there are three plugging block between two neighboring plugging block on 423.Control piece 424 drives reversing piece 423 in sleeve
Sliding in 422.
The oil circuit of light-weight electric hydraulic planger pump is described in detail below with reference to Fig. 7 to Figure 10.
As shown in figure 8, when reversing arrangement 4 is located at the first station, the second plugging block 4232 blocks oil inlet pore, and fluid is not
Into reversing arrangement.
As shown in figure 9, when reversing arrangement 4 is located at second station, control piece 424 drives reversing piece 423 to a Slideslip,
First plugging block 4231 blocks the first oil return pore 421d, the first oil groove 423a connection oil inlet pore 421a and the first oil hole
421b, the second oil groove 423b are connected to the second oil hole 421c and the second oil return pore 421e.Simultaneously, when motor 21 drives partially
Heart wheel 22, fluting cylinder 31, piston 32, piston spring 33, plunger 34 and check valve 35 complete oil suction, and fluid enters oil inlet
Pipe.Since the first oil groove 423a connection oil inlet pores and the first oil hole, fluid enter in radial through-hole and pass through through oil inlet pore
Oilhole in sleeve lateral wall enters the first oil groove 423a and flows into the first oil duct 412 through the first oil hole again, finally enters execution machine
In first cavity of structure 100.Executing agency 100 compresses the second cavity, and the fluid in the second cavity is through the second oil duct 413, sleeve
On oilhole, the second oil groove 423b and the second oil return pipe 415 enter oil pocket.
Likewise, as shown in Figure 10, when reversing arrangement 4 is located at 3rd station, control piece 424 driving reversing piece 423 to
Another Slideslip, third plugging block 4233 block the second oil return pore 421e, the second oil groove 423b connection oil inlet pore 421a and
Second oil hole 421c, the first oil groove 423a is connected to the first oil hole 421b and the first oil return pore 421d.Each hydraulic pump dress
The fluid for setting 3 absorptions enters oil inlet pipe, and due to the second oil groove 423b connection oil inlet pores and the second oil hole, fluid is through oil inlet pipe
Hole, which enters in the radial through-hole of inverting seat 421 and enters the second oil groove 423b through the oilhole in sleeve lateral wall, flows into the second oil duct
413, it finally enters in the second cavity of executing agency 100.Executing agency compresses the first cavity, and the fluid in the first cavity is through the
One oil duct 412, the oilhole on sleeve and the first oil return pipe 414 enter oil pocket.
In this present embodiment, the first oil return pore, the first oil hole, oil inlet pore, the second oil hole and the second oil return
Pore is in circular arc type arrangement form successively in the bottom of inverting seat 421 and positioned at the lower section of sleeve, the side wall of sleeve and first time
Oil pipe hole, the first oil hole, oil inlet pore, the second oil hole and the second oil return pore are in contact.However, the present invention is to above-mentioned
The specific arrangement position of pore is not limited in any way.
In this present embodiment, control piece 424 includes that hand-held part 4241 and the first control ring 4242, hand-held part 4241 are set in
The end of inverting seat 421 simultaneously drives the rotation of the first control ring 4242, and there are two arcs for tool on the madial wall of the first control ring 4242
Slot 4242a, two arc groove 4242a are separately positioned on the both ends of reversing piece 423, and driving reversing piece 423 is sliding in sleeve 422
It is dynamic.To be preferably integrated to reduce the volume of plunger pump and be easy to use, in this present embodiment, control piece 424 further includes the
The inside of two control rings 4243 and motor switch 4244, the second control ring 4243 has groove 4243a, has on motor switch 4244
There is spring contact, the electric motor starting when hand-held part drives the second control ring 4243 to rotate so that spring contact is in contact with groove.
Light-weight electric hydraulic planger pump provided in this embodiment drives two positioned at oil pocket circumferential direction using eccentric wheel 22
Hydraulic pumping unit 3, and in the axis of the interior setting plunger 34 of hydraulic pumping unit 3 perpendicular to the axis of fluting cylinder 31, which will
So that the axis three of the axis of motor 21, the axis of fluting cylinder 31 and plunger is mutually perpendicular to.The setting substantially reduces
The size of 22 radial direction of size and eccentric wheel of 21 axis direction of motor so that the appearance and size of entire plunger pump is more closed
Reason and compact, and eccentric wheel 22, piston 32, cunning switch 33 and plunger 34 4 assembly relation not only oil circuit is arranged
Working efficiency that is more reasonable and substantially increasing plunger pump.Further, light-weight electric hydraulic pressure provided in this embodiment
The design of plunger pump middle sleeve 422 and reversing piece 423 realizes the cycle of two-way oil circuit, and the arrangement of the setting oil duct is very simple
It is single, further reduce the size of plunger pump.
In this present embodiment, it is elastic conjunction to slot between cylinder 31 and the pump housing 1, between plunger 34 and fluting cylinder 31
It is elastic conjunction.It is threaded connection between 35 pump housing 1 of check valve.
In this present embodiment, as shown in fig. 6, cunning switch 33 includes switch plunger 331, switch return spring 332, stop bit
Disk 333 and throttling plate 334.The reciprocating motion of piston 32 drives switch plunger 331 to move.Switch return spring 332 is sheathed on
Switch plunger 331.Stop bit disk 333 is connected to the top of switch plunger 331.Throttling plate 334 is set to stop bit disk 333 far from switch
The side of piston 331.As shown in Figure 1, check valve 35 includes valve body 351, return spring 352 and steel ball 353.Have on valve body 351
There is oil outlet.One end that return spring 352 is connected to valve body 351 by having threaded valve seat 354.Steel ball 353 is connected to back
Position spring 352 and opposite with plunger 34.Preferably, the rigidity for the return spring 352 being arranged in check valve 35 is more than switch return
The rigidity of spring 332.
Specifically：Return spring band 32 downlink of piston on piston 32, the cavity at 32 top of piston are pumped into centainly
Vacuum degree, at this time switch plunger 331 drive 333 downlink of stop bit disk, cunning switch 33 to open, the fluid in oil pocket is through fluting cylinder
Axial oil groove 311 and throttling plate 334 on 31 are drawn into the cavity at 32 top of piston.When eccentric wheel 22 drives 32 uplink of piston
When, under the action of switching return spring 332, stop bit disk 333 closes throttling plate 334, the fluid in the cavity at 32 top of piston
It is extruded into plunger 34.Since the steel ball 353 in check valve 35 is oppositely arranged with plunger 34, when the oil pressure that plunger 34 exports is big
When the elastic force of return spring 352, steel ball 353 is open-top, and fluid enters in check valve 35 and through the oil outlet stream in check valve
To executing agency 100, pushing executing mechanism 100 moves, and hydraulic oil is flow to through back oil road in oil pocket, realizes entire oil circulation.
To prevent the leakage of hydraulic oil, in this present embodiment, check valve 35 further includes the multiple sealing rings being arranged on valve body 351.So
And the present invention is not limited in any way this.
In this present embodiment, hydraulic pumping unit 3 further include closing fluting cylinder 31 and cunning switch 33 end cap 36 and
Strainer between end cap 36 and throttling plate 334 (due to angle, not shown).When the opening of cunning switch 33, oil
The fluid of intracavitary is drawn into the cavity at 32 top of piston through slot axial oil groove 311, strainer and throttling plate 334 on cylinder 31
It is interior.Strainer can be filtered the fluid for entering throttling plate 334, remove the impurity in degreasing fluid, prevent impurity to cunning switch
The components such as 33 and plunger 34 result in blockage.Oil liquid leakage in order to prevent is enclosed in strainer using end cap 36, bolt, O-shaped rubber ring
In the pump housing 1, under bolt force effect, O-ring is compressed tightly against by end cap 3 in seal groove, and fluid is effectively prevent to leak.
In this present embodiment, each hydraulic pumping unit further includes safety valve, and the side wall of plunger 34 has relief hole 341, peace
Full valve is connected to plunger 34 by relief hole 341.When the oil pressure by plunger 34 is excessive so that being more than the unlatching pressure of safety valve
When power, safety valve automatically opens carry out pressure release, plays the role of safeguard protection.Further, in this present embodiment, on the pump housing 1 also
With another safety valve, it is located at the lower section of flexible oil tank.
In this present embodiment, light-weight electric hydraulic planger pump further includes the flexible oil tank being connected with the oil pocket in the pump housing 1
5.However, the present invention is not limited in any way this.
The reciprocating motion of piston 32 is realized by the rotation of eccentric wheel 22, to overcome eccentric wheel to generate when rotated
Unbalanced inertia force, in this present embodiment, driving device 2 further includes the balance weight being arranged on camshaft, balance weight
Radial direction along eccentric wheel 22 is oppositely arranged with eccentric wheel 22.In this present embodiment, the both ends of camshaft are both provided with balance weight,
Balance weight in one end close to motor is made of the balance weight of multiple stepped distributions, and close to the balance of 32 side of piston
The shape of weight is gradually reduced in flat fan shape and along the thickness of fan-shaped radial equilibrium weight, and flat structure subtracts significantly
The small axial length of balance weight so that it will not interfere the assembly between eccentric wheel 22 and motor 21, further,
The inertia force that the balance weight of sector structure can generate eccentric wheel in wider angular range is balanced.However, of the invention
This is not limited in any way.
Since the rotating speed of motor 21 is too fast, for match motor 21 rotating speed and piston 32 movement velocity, in the present embodiment
In, setting driving device 2 further includes retarder 24, ball bearing 25, bearing seal 26 and axle sleeve 27.Have extremely in retarder 24
Few two gears, the output shaft of motor 21 are meshed at least two gears.In this present embodiment, in retarder 24 there are three tools
Reduction gearing.However, the quantity of reduction gearing of the present invention is not limited in any way.Ball bearing 25 is connected to the power of retarder 24
Output end, bearing seal 26 connect ball bearing 25, and axle sleeve 27 is set in ball bearing 25 and connecting eccentric wheel axis.Motor 21
Rotary motion be transferred on camshaft by retarder 24, axle sleeve 27.
In order to reduce the abrasion of long-play, needle bearing 28, needle bearing are installed on the outer profile of eccentric wheel 22
28 remain contact relation with the flat bottom of piston 32.In this present embodiment, 28 outer surface of needle bearing is wider, intermediate
Open up annular oil groove (due to the relationship at visual angle, not shown).Needle bearing 28 remains contact relation with piston 32, is transporting
When turning, eccentric wheel 22 drives needle bearing 28 and the bottom flat structure of piston 32 to form a pair of of kinematic pair, eccentric wheel 22
Convert rotational motion is pumping for piston 32, and kinematic pair forms lubricating oil film under the action of annular oil groove fluid.
In order not to allow plunger pump inner fluid to seal in retarder 24 and motor 21, the end face seal on retarder 24 uses clip
Compression fit is carried out, to prevent fluid from leaking phenomenon in the string of 24 both sides of retarder.In this present embodiment, motor 21 and retarder 24
It is fixed on the pump housing 1 by ring flange 23 and bolt.
Certain heat accumulation is will produce since motor 21 operates for a long time, to improve the heat dissipation effect of motor 21, Yu Benshi
It applies in example, driving device includes radiating block 29, has axial radiating groove 291, axial radiating groove 291 and motor 21 on radiating block 29
The trepanning at top is oppositely arranged.Motor 21 operates generated heat and is radiated by radiating groove 291, effectively avoids inside motor 21
Heat gathers.In this present embodiment, radiating groove 291 is projected as an arc curve in the end of radiating block 29, the setting and electricity
The trepanning at 21 top of machine exactly matches.However, the present invention is not limited in any way this.The effect of radiating groove is in motor 21
Heat heat dissipation channel is provided, what the shape of radiating groove influenced is the shape of heat dissipation.
In conclusion light-weight electric hydraulic planger pump provided by the invention is driven by eccentric wheel in hydraulic pumping unit
Piston and axis of the axis perpendicular to fluting cylinder that plunger is arranged, the setting make the axis of executing agency and the axis of motor
It is perpendicular, substantially reduce the axial dimension of motor so that the size of entire plunger pump more minimize with it is compact.Further
, simple and small reversing arrangement is arranged by adding oil circuit in the pump housing and realizes the bidirectional circulating of oil circuit, is subtracted significantly
The small volume and weight of plunger pump, while the working efficiency of plunger pump is also greatly improved.
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 is worked as
Subject to claims range claimed.
Claims (10)
1. a kind of light-weight electric hydraulic planger pump, which is characterized in that including：
The pump housing, inside have oil pocket；
Driving device is set to the pump housing, and the driving device includes motor and eccentric wheel, and the eccentric wheel is connected to described
The output shaft of motor；
At least one hydraulic pumping unit, is connected to the circumferential direction of the oil pocket, and each hydraulic pumping unit includes：
Fluting cylinder is in hollow structure, and the lateral wall of the fluting cylinder has the axial oil groove of connection oil pocket；
Piston is set in the fluting cylinder, and the bottom of the piston is connected with the eccentric wheel；
Piston spring is sheathed on the piston；
Cunning switch is set in the fluting cylinder, descent of piston, and cunning switch is opened, and hydraulic oil is through axial oil groove and oil
Slide switch is sucked into the cavity of top land；Piston stroking upward, cunning switch are closed；
Plunger is connected to the fluting cylinder, and the axis of the plunger is vertical with the fluting axis of cylinder, and cunning switch closes
It will be in the hydraulic oil pressure to plunger in the cavity of top land while closing；
Check valve is connected to plunger；
Reversing arrangement is connected between the check valve and executing agency, and two kinds of opposite oil circuits in direction are provided for executing agency
Cycle.
2. light-weight electric hydraulic planger pump according to claim 1, which is characterized in that the reversing arrangement includes：
Oil inlet pipe, the first oil duct, the second oil duct, the first oil return pipe and the second oil return pipe being set in the pump housing, the oil inlet pipe
The check valve being connected in each hydraulic pumping unit, the first oil duct and the second oil duct respectively with two cavity phases in executing agency
Connection, the first oil return pipe and the second oil return pipe are connected with oil pocket respectively；
Commutation portion, is set to the side of the pump housing, and the commutation portion includes：
Inverting seat, with radial through-hole, the lower section for being formed in radial through-hole and be connected with oil inlet pipe oil inlet pore, with the
The first oil hole that one oil duct is connected, the second oil hole being connected with the second oil duct, be connected with the first oil return pipe
One oil return pore and the second oil return pore being connected with the second oil return pipe；
Sleeve, the side wall for wearing the radial through-hole and sleeve have multiple circumferentially distributed oilholes；
Reversing piece is set in the sleeve, plugging block there are three tools on the reversing piece, is formed between two neighboring plugging block
Oil groove；
Control piece, driving reversing piece slide in sleeve；
When reversing arrangement is located at the first station, the second plugging block blocks oil inlet pore, and fluid does not enter reversing arrangement；
When reversing arrangement is located at second station, control piece drives reversing piece to a Slideslip, and the first plugging block blocks first time
Oil pipe hole, the first oil groove are connected to oil inlet pore and the first oil hole, and the second oil groove is connected to the second oil hole and the second oil return pore,
Fluid through on oil inlet pipe, sleeve oilhole and the first oil duct enter the first cavity of executing agency, executing agency's compression second
Cavity, fluid in the second cavity through on the second oil duct, sleeve oilhole and the second oil return pipe enter oil pocket；
When reversing arrangement is located at 3rd station, control piece drives reversing piece to another Slideslip, and third plugging block blocks second
Oil return pore, the second oil groove are connected to oil inlet pore and the second oil hole, and the first oil groove is connected to the first oil hole and the first oil return pipe
Hole, fluid through on oil inlet pipe, sleeve oilhole and the second oil duct enter the second cavity of executing agency, executing agency's compression the
One cavity, fluid in the first cavity through on the first oil duct, sleeve oilhole and the first oil return pipe enter oil pocket.
3. light-weight electric hydraulic planger pump according to claim 2, which is characterized in that the control piece include hand-held part and
First control ring, the hand-held part are set in the end of inverting seat and drive the rotation of the first control ring, the inside of the first control ring
For tool there are two arc groove, two arc grooves are separately positioned on the both ends of reversing piece on wall, and driving reversing piece slides in sleeve.
4. light-weight electric hydraulic planger pump according to claim 3, which is characterized in that the control piece further includes the second control
The inside of ring and motor switch processed, second control ring has groove, has spring contact on motor switch, when hand-held part band
Dynamic second control ring rotates electric motor starting when spring contact is in contact with groove.
5. light-weight electric hydraulic planger pump according to claim 1, which is characterized in that it is described it is cunning switch include：
Switch plunger moves back and forth under the driving of piston；
Return spring is switched, the switch plunger is sheathed on；
Stop bit disk is connected to the top of switch plunger；
Throttling plate is set to the side of the stop bit disk far from switch plunger.
6. light-weight electric hydraulic planger pump according to claim 1, which is characterized in that the check valve includes：
Valve body has oil outlet on the valve body；
Return spring is connected to one end of the valve body；
Steel ball is connected to the return spring and opposite with the plunger, when the oil pressure of plunger output is more than the shape of return spring
When pressure changeable, steel ball is open-top, and hydraulic oil enters valve body and flowed out through oil outlet.
7. light-weight electric hydraulic planger pump according to claim 1, which is characterized in that each hydraulic pumping unit further includes peace
There is the side wall of full valve, the plunger relief hole, the safety valve to be connected to plunger by relief hole.
8. light-weight electric hydraulic planger pump according to claim 1, which is characterized in that the driving device further includes setting
Balance weight on camshaft, along the radial direction of eccentric wheel, the opposite direction in eccentric wheel is arranged in balance weight.
9. light-weight electric hydraulic planger pump according to claim 1, which is characterized in that the driving device further includes：
Retarder, the retarder is interior, and there are at least two gears, the output shaft of the motor to be meshed at least two gears；
Ball bearing is connected to the power output end of retarder；
Bearing seal connects the ball bearing；
Axle sleeve is set to the inside of ball bearing and is connected with camshaft.
10. light-weight electric hydraulic planger pump according to claim 1, which is characterized in that the driving device includes heat dissipation
There is on the radiating block block axial radiating groove, the axial direction radiating groove to be oppositely arranged with the trepanning at the top of motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710369049.8A CN106968910B (en) | 2017-05-23 | 2017-05-23 | Light-weight electric hydraulic planger pump |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710369049.8A CN106968910B (en) | 2017-05-23 | 2017-05-23 | Light-weight electric hydraulic planger pump |
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| CN106968910A CN106968910A (en) | 2017-07-21 |
| CN106968910B true CN106968910B (en) | 2018-10-09 |
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| CN201710369049.8A Active CN106968910B (en) | 2017-05-23 | 2017-05-23 | Light-weight electric hydraulic planger pump |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107795451A (en) * | 2017-11-29 | 2018-03-13 | 欧盾科技有限公司 | Integrated high pressure oil pump |
| CN108105060A (en) * | 2018-01-10 | 2018-06-01 | 浙江工业大学 | A kind of squeezer of integrated high pressure plunger-type fuel pump driving |
| CN108533482B (en) * | 2018-06-15 | 2023-08-08 | 欧盾科技有限公司 | Variable pressure variable plunger pump |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US5556264A (en) * | 1995-07-28 | 1996-09-17 | Gp Companies, Inc. | Low profile positive displacement pump system |
| US6116868A (en) * | 1999-03-01 | 2000-09-12 | Lu; Chung-Tai | Multi-faceted valve head for hydraulic pump |
| US6902143B2 (en) * | 2003-01-24 | 2005-06-07 | Parker-Hannifin Corporation | Manual override assembly for pilot-operated valve |
| CN101655080A (en) * | 2008-09-25 | 2010-02-24 | 沈焕军 | Plunger water pump structure |
| CN201568292U (en) * | 2009-12-21 | 2010-09-01 | 芜湖伯特利电子控制系统有限公司 | Novel plunger pump |
| CN206770147U (en) * | 2017-05-23 | 2017-12-19 | 杭州众拓科技有限公司 | Light-weight electric hydraulic planger pump |
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Effective date of registration: 20230824 Address after: Room 1401, Unit 3, Building 4, Lingyu, Jianggan District, Hangzhou City, Zhejiang Province, 310016 Patentee after: Wang Jun Address before: No. 688 Bin'an Road, Binjiang District, Hangzhou City, Zhejiang Province, 310000 Patentee before: HANGZHOU ZHONGTUO TECHNOLOGY Co.,Ltd. |
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