CN108843530A - Hand-hydraulic Split pump - Google Patents
Hand-hydraulic Split pump Download PDFInfo
- Publication number
- CN108843530A CN108843530A CN201810896722.8A CN201810896722A CN108843530A CN 108843530 A CN108843530 A CN 108843530A CN 201810896722 A CN201810896722 A CN 201810896722A CN 108843530 A CN108843530 A CN 108843530A
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- China
- Prior art keywords
- inner chamber
- valve
- oil
- pump
- core
- Prior art date
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Classifications
-
- 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
- F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
- F04B9/14—Pumps characterised by muscle-power operation
-
- 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
- F04B53/22—Arrangements for enabling ready assembly or disassembly
Abstract
The invention discloses a kind of hand-hydraulic Split pump, including the pump housing, the suction forced oil device of oil suction and oil extraction, the interior inserted valve for setting two check valves and the pressure relief device that oil cylinder is connected to the pump housing can be opened；The pump housing includes the first fuel tank (1.1), the second fuel tank (1.2) and valve plate (1.3), is connected to inside first fuel tank (1.1), the second fuel tank (1.2) and valve plate (1.3) three；The suction forced oil device is connected to the valve plate (4) of the pump housing (1), and the suction forced oil device is connected to by inserted valve with oil pump, and the pressure relief device is mounted on the one end on the pump housing and being located at inserted valve；The inserted valve is mounted on the pump housing.The hand-hydraulic fission pump configuration is simple, small in size, light-weight, fuel-displaced stabilization, high safety and easy to maintenance.
Description
Technical field
It is especially a kind of for hydraulic lifting equipment, lifting equipment, jack etc. the present invention relates to pump housing technical field
Hand-hydraulic Split pump in equipment.
Background technique
Hand-hydraulic Split pump is widely used in the equipment such as hydraulic lifting equipment, lifting equipment, jack.Currently, state
The hydraulic hand-pump inside used be mostly pump with oil cylinder one and also volume it is big, mobile inconvenient, maintenance difficult and at high cost.
Occasion that is narrow in those inner spaces but needing to install additional hydraulic hand-pump is just unable to satisfy.
Summary of the invention
The technical problem to be solved by the present invention is to it is simple to provide a kind of structure, small in size, light-weight, fuel-displaced stabilization, safety
The strong and easy to maintenance hand-hydraulic Split pump of property.
The technical scheme is that provide a kind of hand-hydraulic Split pump having following structure, including the pump housing, can inhale
Oil and the suction forced oil device of oil extraction, the interior inserted valve for setting two check valves and the pressure relief device that oil cylinder is connected to the pump housing can be opened；
The pump housing includes the first fuel tank, the second fuel tank and valve plate, in first fuel tank, the second fuel tank and valve plate three
Portion's connection；The suction forced oil device is connected to the valve plate of the pump housing, and the suction forced oil device is connected to by inserted valve with oil pump, described
Pressure relief device is mounted on the one end on the pump housing and being located at inserted valve；The inserted valve is mounted on the pump housing, and the inserted valve includes
The first valve body, steel ball, cone valve set, poppet valve core, volute spring and the valve deck being mounted in valve plate；Be equipped in first valve body with
The first inner chamber of oil cylinder connection, the second inner chamber being connected to suction forced oil device and third inner cavity, the cone valve set and poppet valve core are set
In first inner chamber and tail portion is offseted with volute spring and valve deck, and the valve deck is fixed on the first valve body, the poppet valve core top
The communicating passage of first inner chamber and second inner chamber is closed on or off, and the steel ball is located in second inner chamber, the steel ball top on or off
Close the communicating passage of second inner chamber Yu third inner cavity；Forced oil device pressure oil state is inhaled, the poppet valve core opens first inner chamber and the
The communicating passage of two inner cavities, the steel ball close the communicating passage of second inner chamber and third inner cavity, the hydraulic oil in the pump block
By in first inner chamber, one-way throttle valve to oil cylinder；Inhale forced oil device oil suction state, the poppet valve core closes first inner chamber and the
The communicating passage of two inner cavities, the steel ball open the communicating passage of second inner chamber and third inner cavity, the first fuel tank, the second fuel tank
Oil enters in pump block.
The suction forced oil device includes pump block, pedal stroke, pinch roller；The mounting base is fixed on the side wall of the pump housing, the pump
Set is mounted on valve plate and internal connection, is equipped with the inner cavity slided for pump core in the pump core, the spring cup axial limiting exists
In pump core, outside pump block, the spring top offsets the spring pocket with spring cup, the top surface phase of the spring bottom end and valve plate
It supports, the pedal stroke is connect with pinch roller seat, and the pinch roller seat is equipped with upper first articulated shaft and second hinge axis, and described first is hinged
Axle position is in pinch roller seat and mounting base, and in pinch roller seat, the pinch roller covers outside second hinge axis the second hinge axle position, institute
State that pinch roller is located at the top of pump core and the two is in contact, first articulated shaft is located at the side of pump core, and second hinge axis is pacified
Holding position is higher than the installation site of the first articulated shaft.
The pressure relief device includes the second valve body, draining pedal, thimble and spring, and second valve body is located at the first valve body
One end, described thimble one end, which is located in the second valve body and synchronizes, opens poppet valve core and steel ball, and the spring pocket is described in thimble
Poppet valve core, which is located at, to be stretched out in outside the second valve body, and the draining pedal is a lever and is rotatably connected on the second valve body, described to let out
One end of oily pedal and the outer end of poppet valve core offset；
Oil cylinder oil return state, the poppet valve core open the communicating passage of first inner chamber and second inner chamber, and the steel ball is opened
The communicating passage of second inner chamber and third inner cavity, in-oil cylinder hydraulic oil are back to the first oil by first inner chamber and second inner chamber
In case, the second fuel tank.The steel ball side offsets with poppet valve core when oil cylinder oil return state, and the other end offsets with thimble.
The outer wall of first valve body is equipped with isolation first inner chamber and the first sealing ring of second inner chamber and is isolated the
Second sealing ring of two inner cavities and third inner cavity, the second inner chamber is between the first sealing ring and the second sealing ring.
The rotatable connecting portion of the pedal stroke is equipped with the footrest joint of the swing angle of lockable pedal stroke.
After using the above structure, the present invention is had the following advantages that：It jams on foot-driven lever, pinch roller seat is made to do camber line around around axis center
Movement, by pinch roller pump core is pressed down, to make the hydraulic oil of poppet valve core in pump block chamber by oil circuit arrival valve chamber, by
In the increase of hydraulic fluid flow rate, under the effect of pressure F pressure, closing in first inner chamber, while second under the action of pressure F
The ball valve of inner cavity opens, and comes the first inner chamber of valve plate, then come one-way throttle valve outlet by oil circuit, completes fuel-displaced movement；
When shed on foot-driven lever jam on power, spool under the action of spring up reset force, pump core is reset to an original position
It sets, while generating a suction F in pump block chamber and inhaling, poppet valve core under the action of F inhales, in valve body first inner chamber, which is inhaled, to close
It closes, the ball valve on right side is inhaled out, so that the hydraulic oil in fuel tank is drawn onto the chamber of pump block by oil circuit, it is dynamic to complete oil suction
To make, work is completed in movement so repeatedly, and the above structure is simple, small in size, light-weight, fuel-displaced stabilization, high safety, and first
Fuel tank, the second fuel tank and the pump housing, pump core, valve plate etc. can be dismantled, and make easy to maintenance.
Detailed description of the invention
Fig. 1 is the schematic diagram of the section structure of hand-hydraulic Split pump of the invention.
Fig. 2 is the right side structural representation of hand-hydraulic Split pump of the invention.
Fig. 3 is the schematic diagram of the section structure of valve plate of the invention.
Fig. 4 is the portion the A enlarged structure schematic diagram of Fig. 3.
Fig. 5 is the oil outlet of inserted valve and the connection schematic diagram of oil cylinder.
Fig. 6 is the oil inlet of inserted valve and the connection schematic diagram of fuel tank.
Fig. 7 is the oil inlet and outlet of inserted valve and the connection schematic diagram for inhaling forced oil device.
As shown in the figure：
1.1, the first fuel tank, the 1.2, second fuel tank, 1.3, valve plate, 2.1, pump block, 2.2, pump core, 2.3, spring, 2.4, bullet
Spring lid, 2.5, pinch roller seat, 2.6, mounting base, 2.7, pedal stroke, 2.8, pinch roller, the 2.9, first articulated shaft, the 3.0, second articulated shaft,
4.1, the first valve body, 4.2, steel ball, 4.3, cone valve set, 4.4, poppet valve core, 4.5, volute spring, 4.6, valve deck, 4.7, first is close
Seal, the 4.8, second sealing ring, the 5.1, second valve body, 5.2, draining pedal, 5.3, thimble, 5.4, spring, 6, one-way throttle valve,
7, the first pipeline, the 8, second pipeline, 9, third pipeline.
Specific embodiment
The present invention will be further explained below with reference to the attached drawings.
Described picture 1-4, the of the invention hand-hydraulic Split pump, including the pump housing, can oil suction and oil extraction suction forced oil device,
It inside sets the inserted valve of two check valves and the pressure relief device that oil cylinder is connected to the pump housing can be opened；The pump housing includes the first fuel tank
1.1, the second fuel tank 1.2 and valve plate, first fuel tank 1.1, the second fuel tank 1.2 and valve plate three inside are connected to；The suction pressure
Oily device is connected to the valve plate 1.3 of the pump housing 1, and the suction forced oil device is connected to by inserted valve with oil pump, the pressure relief device peace
One end on the pump housing and positioned at inserted valve；The inserted valve is mounted on the pump housing.
The inserted valve include be mounted in valve plate the first valve body 4.1, steel ball 4.2, cone valve set 4.3, poppet valve core 4.4,
Volute spring 4.5 and valve deck 4.6；Cone valve set 4.3 and ball valve are equivalent to a check valve, in first valve body 4.1
Equipped with the first inner chamber being connected to oil cylinder, the second inner chamber being connected to suction forced oil device and third inner cavity, first valve body
4.1 outer wall be equipped with isolation first inner chamber and the first sealing ring 4.7 of second inner chamber and be isolated second inner chamber in third
Second sealing ring 4.8 of chamber, the second inner chamber is between the first sealing ring 4.7 and the second sealing ring 4.8.
The cone valve covers 4.3 and poppet valve core 4.4 is located in first inner chamber and 4.6 phase of tail portion volute spring 4.5 and valve deck
It supports, the valve deck 4.6 is fixed on the first valve body 4.1, and 4.5 one end of volute spring offsets with poppet valve core 4.4, the other end and valve deck
4.6 offset, non-pressure oil state, in poppet valve core 4.4 by the elastic force isolation first inner chamber of volute spring 4.5 and leading to for second inner chamber
Road, under pressure oil state, poppet valve core 4.4 is pushed by hydraulic oil, is overcome the elastic force of volute spring 4.5 and is stretched inside, to open
The channel of first inner chamber and second inner chamber, hydraulic oil enter oil cylinder from channel.The poppet valve core 4.4 is opened or is closed in first
The communicating passage of chamber and second inner chamber, the steel ball 4.2 are located in second inner chamber, and the steel ball 4.2 is opened or closed in second
The communicating passage of chamber and third inner cavity；
Non- pressure oil state, it is close by the elastic force of volute spring 4.5 and the channel of first inner chamber and second inner chamber in poppet valve core 4.4
It seals, under pressure oil state, poppet valve core 4.4 is pushed by hydraulic oil, is overcome the elastic force of volute spring 4.5 and is stretched inside.Suction pressure oil dress
Pressure oil state is set, the poppet valve core 4.4 opens the communicating passage of first inner chamber and second inner chamber under the action of hydraulic oil, described
Steel ball 4.2 closes the communicating passage of second inner chamber and third inner cavity, and the hydraulic oil in the pump block 2.1 passes through first inner chamber, list
In to throttle valve 6 to oil cylinder；
Forced oil device oil suction state is inhaled, in elastic force next door first inner chamber and second of the poppet valve core 4.4 by volute spring 4.5
The channel of chamber, the poppet valve core 4.4 close the communicating passage of first inner chamber and second inner chamber, and the steel ball 4.2 is opened in second
The communicating passage of chamber and third inner cavity, the first fuel tank 1.1, the second fuel tank 1.2 oil enter in pump block 2.1.
The suction forced oil device includes pump block 2.1, pump core 2.2, spring 2.3, spring cup 2.4, pinch roller seat 2.5, mounting base
2.6, pedal stroke 2.7, pinch roller 2.8；The mounting base 2.6 is fixed on the side wall of the pump housing 1, and the pump block 2.1 is mounted on valve plate 1.3
Upper and internal connection, the pump core 2.2 is interior to be equipped with the inner cavity slided for pump core 2.2, and 2.4 axial limiting of spring cup is in pump core
On 2.2, outside pump block 2.1,2.3 top of spring offsets 2.3 sets of the spring with spring cup 2.4,2.3 bottom end of spring
It offsets with the top surface of valve plate 1.3, the pedal stroke 2.7 is connect with pinch roller seat 2.5, and it is hinged that the pinch roller seat 2.5 is equipped with upper first
Axis 2.9 and second hinge axis 3.0, first articulated shaft 2.9 are located in pinch roller seat 2.5 and mounting base 2.6, the second hinge
Axis 3.0 is located in pinch roller seat 2.5, and for 2.8 sets of the pinch roller outside second hinge axis 3.0, the pinch roller 2.8 is located at pump core 2.2
Top and the two is in contact, first articulated shaft 2.9 is located at the side of pump core 2.2, and 3.0 installation site of second hinge axis is high
In the installation site of the first articulated shaft 2.9.Toward lower swing pedal stroke 2.7, pinch roller 2.8 is made to push pump core 2.2 down down, thus
Oil in pump block 2.1 is expressed in oil cylinder；Pedal stroke 2.7 is unclamped, pump core 2.2 resets under the action of spring 2.3, pump core
2.2 up, so that pump block 2.1 is generated negative pressure, to make pump block 2.1 from the first fuel tank 1.1,1.2 oil suction of the second fuel tank.
The pressure relief device includes the second valve body 5.1, draining pedal 5.2, thimble 5.3 and spring 5.4, second valve body
5.1 are located at one end of the first valve body 4.1, and described 5.3 one end of thimble, which is located in the second valve body 5.1 and synchronizes, opens poppet valve core 4.4
With steel ball 4.2, in thimble 5.3, the poppet valve core 4.4, which is located at, to be stretched out in outside the second valve body 5.1, described to let out for 5.4 sets of the spring
Oily pedal 5.2 is a lever and is rotatably connected on the second valve body 5.1, one end and the poppet valve core 4.4 of the draining pedal 5.2
Outer end offsets；Oil cylinder oil return state, the poppet valve core 4.4 open the communicating passage of first inner chamber and second inner chamber, the steel ball
4.2 open the communicating passage of second inner chamber and third inner cavity, and in-oil cylinder hydraulic oil flows back by first inner chamber and second inner chamber
To the first fuel tank 1.1, the second fuel tank 1.2.4.2 side of steel ball offsets with poppet valve core 4.4 when oil cylinder oil return state, another
End offsets with thimble 5.3, i.e., thimble 5.3 pushes make inside, pushes steel ball 4.2, opens the company of second inner chamber Yu third inner cavity
Circulation passage, then push inside, make steel ball 4.2 go to open poppet valve core 4.4, open the communicating passage of first inner chamber and second inner chamber,
To get through first inner chamber, second inner chamber and third inner cavity, circuit, hydraulic oil are directly constituted by oil circuit and returns to fuel tank.
The rotatable connecting portion of the pedal stroke 2.7 is equipped with the footrest joint of the swing angle of lockable pedal stroke 2.7
3.1, convenient when not having to foot-driven lever, swivel foot treadle is packed up perpendicular to the ground.
As shown in figure 5, first pipeline one end of inserted valve is connected to first inner chamber, the other end is connected to oil cylinder, Ling Yifen
Bye-pass is technique mouth, is blocked.
As shown in fig. 6, second pipeline one end of inserted valve is connected to third inner cavity, the other end and the first fuel tank and the second oil
Case connection, another branch line are technique mouth, are blocked.
As shown in fig. 7, third pipeline one end of inserted valve is connected to second inner chamber, the other end and the pump block for inhaling forced oil device
2.1 connections, another branch line are technique mouth, are blocked.
When work, jam on foot-driven lever, make pinch roller seat around outer-hexagonal pitch do movement in a curve, by pinch roller pump core is past
It pushes, the second inner chamber to the hydraulic oil made in pump block chamber by oil circuit arrival inserted valve, due to the increase of hydraulic fluid flow rate,
The ball valve in second inner chamber is opened under the action of pressure F simultaneously, i.e., poppet valve core opens in first under the action of hydraulic oil
The communicating passage of chamber and second inner chamber, while making the communicating passage of steel ball closing second inner chamber and third inner cavity, to make hydraulic
Oil comes the first inner chamber of inserted valve, then comes one-way throttle valve outlet by oil circuit, completes fuel-displaced movement；When shedding foot-driven lever
On jam on power, spool under the action of spring up reset force, pump core is reset to an original position, while small pump block
It generates a suction F in chamber to inhale, under the action of F inhales, the poppet valve core of the first inner chamber of inserted valve is inhaled closes, that is, closes the
The communicating passage of one inner cavity and second inner chamber, the intracorporal ball valve of the second chamber are inhaled out, that is, open second inner chamber and third inner cavity
Communicating passage complete oil suction movement so that the hydraulic oil in fuel tank is drawn onto the chamber of pump block by oil circuit, it is anti-in this way
Work is completed in multiple movement.
Claims (6)
1. a kind of hand-hydraulic Split pump, it is characterised in that：Including the pump housing, can oil suction and oil extraction suction forced oil device, interior set two
The inserted valve of a check valve and the pressure relief device that oil cylinder is connected to the pump housing can be opened；The pump housing includes the first fuel tank (1.1), the
Two fuel tanks (1.2) and valve plate (1.3) connect inside first fuel tank (1.1), the second fuel tank (1.2) and valve plate (1.3) three
It is logical；The suction forced oil device is connected to the valve plate (1.3) of the pump housing (1), and the suction forced oil device is connected to by inserted valve with oil pump,
The pressure relief device is mounted on the one end on the pump housing and being located at inserted valve；The inserted valve is mounted on the pump housing, the inserted valve
Including the first valve body (4.1), steel ball (4.2), cone valve set (4.3), the poppet valve core (4.4), Conical Projectile being mounted in valve plate (1.3)
Spring (4.5) and valve deck (4.6)；It is equipped with the first inner chamber being connected to oil cylinder in first valve body (4.1), connects with suction forced oil device
Logical second inner chamber and third inner cavity, the cone valve set (4.3) and poppet valve core (4.4) are located in first inner chamber and tail portion is bored
Shape spring (4.5) and valve deck (4.6) offset, and the valve deck (4.6) is fixed on the first valve body (4.1), the poppet valve core (4.4)
The communicating passage of first inner chamber and second inner chamber is opened or closes, the steel ball (4.2) is located in second inner chamber, the steel ball
(4.2) open or close the communicating passage of second inner chamber and third inner cavity；Inhale forced oil device pressure oil state, the poppet valve core
(4.4) communicating passage of first inner chamber and second inner chamber is opened, the steel ball (4.2) closes the company of second inner chamber and third inner cavity
Circulation passage, the hydraulic oil in the pump block (2.1) is by first inner chamber, one-way throttle valve (6) to oil cylinder；Forced oil device is inhaled to inhale
Oil condition, the poppet valve core (4.4) close the communicating passage of first inner chamber and second inner chamber, and the steel ball (4.2) opens second
The communicating passage of inner cavity and third inner cavity, the first fuel tank (1.1), the second fuel tank (1.2) oil enter in pump block (2.1).
2. hand-hydraulic Split pump according to claim 1, it is characterised in that：The suction forced oil device includes pump block
(2.1), pump core (2.2), spring (2.3), spring cup (2.4), pinch roller seat (2.5), mounting base (2.6), pedal stroke (2.7), pressure
It takes turns (2.8)；The mounting base (2.6) is fixed on the side wall of the pump housing (1), and the pump block (2.1) is mounted on valve plate (1.3) and interior
Portion's connection, the pump core (2.2) is interior to be equipped with the inner cavity slided for pump core (2.2), and spring cup (2.4) axial limiting is in pump core
(2.2) on, the spring (2.3) cover pump block (2.1) outside, spring (2.3) top offsets with spring cup (2.4), described
Spring (2.3) bottom end and the top surface of valve plate (1.3) offset, and the pedal stroke (2.7) connect with pinch roller seat (2.5), the pinch roller
Seat (2.5) is equipped with upper first articulated shaft (2.9) and second hinge axis, and ((3.0), first articulated shaft (2.9) are located at pinch roller seat
(2.5) and on mounting base (2.6), the second hinge axis (3.0) is located on pinch roller seat (2.5), and the pinch roller (2.8) covers the
Outside, the pinch roller (2.8) is located at the top of pump core (2.2) and the two is in contact, first articulated shaft for two hinge axis (3.0)
(2.9) it is located at the side of pump core (2.2), and second hinge axis (3.0) installation site is higher than the installation position of the first articulated shaft (2.9)
It sets.
3. hand-hydraulic Split pump according to claim 1, it is characterised in that：The pressure relief device includes the second valve body
(5.1), draining pedal (5.2), thimble (5.3) and spring (5.4), second valve body (5.1) are located at the first valve body (4.1)
One end, described thimble (5.3) one end, which is located in the second valve body (5.1) and synchronizes, opens poppet valve core (4.4) and steel ball (4.2), institute
It states spring (5.4) to cover in thimble (5.3), the poppet valve core (4.4), which is located at, stretches out in the second valve body (5.1) outside, and the draining is stepped on
Plate (5.2) is a lever and is rotatably connected on the second valve body (5.1), one end of the draining pedal (5.2) and poppet valve core
(4.4) outer end offsets；
Oil cylinder oil return state, the poppet valve core (4.4) open the communicating passage of first inner chamber and second inner chamber, the steel ball
(4.2) communicating passage of second inner chamber and third inner cavity is opened, in-oil cylinder hydraulic oil is returned by first inner chamber and second inner chamber
It flow in the first fuel tank (1.1), the second fuel tank (1.2).
4. hand-hydraulic Split pump according to claim 3, it is characterised in that：Steel ball when oil cylinder oil return state
(4.2) side offsets with poppet valve core (4.4), and the other end offsets with thimble (5.3).
5. hand-hydraulic Split pump according to claim 1, it is characterised in that：On the outer wall of first valve body (4.1)
Equipped with isolation first inner chamber and the first sealing ring (4.7) of second inner chamber and second inner chamber and third inner cavity is isolated it is second close
Seal (4.8), the second inner chamber is between the first sealing ring (4.7) and the second sealing ring (4.8).
6. hand-hydraulic Split pump according to claim 2, it is characterised in that：The rotation connection of the pedal stroke (2.7)
Position is equipped with the footrest joint (3.1) of the swing angle of lockable pedal stroke (2.7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810896722.8A CN108843530B (en) | 2018-08-08 | 2018-08-08 | Manual hydraulic split pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810896722.8A CN108843530B (en) | 2018-08-08 | 2018-08-08 | Manual hydraulic split pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108843530A true CN108843530A (en) | 2018-11-20 |
| CN108843530B CN108843530B (en) | 2023-06-27 |
Family
ID=64192823
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810896722.8A Active CN108843530B (en) | 2018-08-08 | 2018-08-08 | Manual hydraulic split pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108843530B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111620261A (en) * | 2020-06-02 | 2020-09-04 | 浙江大学 | Hydraulic multi-wheel synchronous lifting device and method thereof |
| CN111634266A (en) * | 2020-06-02 | 2020-09-08 | 浙江大学 | Rapid shifting device and method for vehicle movement |
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| DE3715399A1 (en) * | 1987-05-08 | 1988-11-24 | Peter Schropp | DOSING PUMP FOR HEAVY-FLOWING LIQUIDS |
| CN2290707Y (en) * | 1996-09-23 | 1998-09-09 | 顾苏东 | Manual double-action ultrahigh pressure variable oil pump |
| JP2006009385A (en) * | 2004-06-25 | 2006-01-12 | Hamanetsu:Kk | Pump auxiliary device for feed pump for temporary toilet |
| CN201129281Y (en) * | 2007-11-15 | 2008-10-08 | 杨岩顺 | High-speed oil pump of manual tube cutting machine |
| CN201568248U (en) * | 2009-12-29 | 2010-09-01 | 湖南铁路联创技术发展中心 | Manual pump |
| CN206845409U (en) * | 2017-05-19 | 2018-01-05 | 无锡市伊利亚特机械制造有限公司 | A kind of hydraulic hand pump |
-
2018
- 2018-08-08 CN CN201810896722.8A patent/CN108843530B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3715399A1 (en) * | 1987-05-08 | 1988-11-24 | Peter Schropp | DOSING PUMP FOR HEAVY-FLOWING LIQUIDS |
| CN2290707Y (en) * | 1996-09-23 | 1998-09-09 | 顾苏东 | Manual double-action ultrahigh pressure variable oil pump |
| JP2006009385A (en) * | 2004-06-25 | 2006-01-12 | Hamanetsu:Kk | Pump auxiliary device for feed pump for temporary toilet |
| CN201129281Y (en) * | 2007-11-15 | 2008-10-08 | 杨岩顺 | High-speed oil pump of manual tube cutting machine |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111620261A (en) * | 2020-06-02 | 2020-09-04 | 浙江大学 | Hydraulic multi-wheel synchronous lifting device and method thereof |
| CN111634266A (en) * | 2020-06-02 | 2020-09-08 | 浙江大学 | Rapid shifting device and method for vehicle movement |
| CN111620261B (en) * | 2020-06-02 | 2021-07-09 | 浙江大学 | Hydraulic multi-wheel synchronous lifting device and method thereof |
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| CN108843530B (en) | 2023-06-27 |
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