CN108843530B - Manual hydraulic split pump - Google Patents
Manual hydraulic split pump Download PDFInfo
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- CN108843530B CN108843530B CN201810896722.8A CN201810896722A CN108843530B CN 108843530 B CN108843530 B CN 108843530B CN 201810896722 A CN201810896722 A CN 201810896722A CN 108843530 B CN108843530 B CN 108843530B
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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
- 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
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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
- F04B53/22—Arrangements for enabling ready assembly or disassembly
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
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Abstract
The invention discloses a manual hydraulic split pump, which comprises a pump body, a pressure oil suction device capable of sucking oil and discharging oil, a cartridge valve internally provided with two one-way valves and a pressure relief device capable of opening an oil cylinder to be communicated with the pump body; the pump body comprises a first oil tank (1.1), a second oil tank (1.2) and a valve plate (1.3), wherein the first oil tank (1.1), the second oil tank (1.2) and the valve plate (1.3) are internally communicated; the pressure absorbing device is communicated with a valve plate (4) of the pump body (1), the pressure absorbing device is communicated with the oil pump through a cartridge valve, and the pressure releasing device is arranged on the pump body and is positioned at one end of the cartridge valve; the cartridge valve is mounted on the pump body. The manual hydraulic split pump has the advantages of simple structure, small volume, light weight, stable oil output, strong safety and convenient maintenance.
Description
Technical Field
The invention relates to the technical field of pump bodies, in particular to a manual hydraulic split pump used for hydraulic lifting equipment, jacks and other equipment.
Background
The manual hydraulic split pump is widely used for hydraulic lifting equipment, jacks and other equipment. At present, most of domestic manual hydraulic pumps are integrated with oil cylinders, and are large in size, inconvenient to move, difficult to maintain and high in cost. This is not satisfied in the case where the internal space is limited but a manual hydraulic pump is required.
Disclosure of Invention
The invention aims to solve the technical problem of providing the manual hydraulic split pump which has the advantages of simple structure, small volume, light weight, stable oil output, strong safety and convenient maintenance.
The technical scheme of the invention is that the manual hydraulic split pump with the following structure comprises a pump body, a pressure oil suction device capable of sucking oil and discharging oil, a cartridge valve internally provided with two one-way valves and a pressure relief device capable of opening the oil cylinder to be communicated with the pump body;
the pump body comprises a first oil tank, a second oil tank and a valve plate, and the first oil tank, the second oil tank and the valve plate are communicated with each other; the pressure relief device is arranged on the pump body and is positioned at one end of the cartridge valve; the cartridge valve is arranged on the pump body and comprises a first valve body, a steel ball, a conical valve sleeve, a conical valve core, a conical spring and a valve cover which are arranged in the valve plate; the first valve body is internally provided with a first inner cavity communicated with the oil cylinder, a second inner cavity and a third inner cavity communicated with the oil suction device, the cone valve sleeve and the cone valve core are arranged in the first inner cavity, the tail parts of the cone valve sleeve and the cone valve core are propped against the valve cover by cone springs, the valve cover is fixed on the first valve body, the cone valve core props up or closes a communication channel between the first inner cavity and the second inner cavity, the steel ball is positioned in the second inner cavity, and the steel ball props up or closes a communication channel between the second inner cavity and the third inner cavity; the hydraulic oil in the pump sleeve passes through the first inner cavity and the one-way throttle valve to the oil cylinder; the oil suction device is in an oil suction state, the conical valve core closes the communication channel between the first inner cavity and the second inner cavity, the steel ball opens the communication channel between the second inner cavity and the third inner cavity, and oil in the first oil tank and the second oil tank enters the pump sleeve.
The pressure oil absorbing device comprises a pump sleeve, a pedal rod and a pressing wheel; the mounting seat is fixed on the side wall of the pump body, the pump sleeve is mounted on the valve plate and is internally communicated, an inner cavity for the pump core to slide is formed in the pump core, the spring cover is axially limited on the pump core, the spring sleeve is arranged outside the pump sleeve, the top end of the spring is propped against the spring cover, the bottom end of the spring is propped against the top surface of the valve plate, the pedal rod is connected with the pinch roller seat, the pinch roller seat is provided with a first hinge shaft and a second hinge shaft, the first hinge shaft is positioned on the pinch roller seat and the mounting seat, the second hinge shaft is positioned on the pinch roller seat, the pinch roller is sleeved outside the second hinge shaft, the pinch roller is positioned at the top end of the pump core and contacts with the first hinge shaft, the first hinge shaft is positioned beside the pump core, and the mounting position of the second hinge shaft is higher than that of the first hinge shaft.
The pressure relief device comprises a second valve body, a oil drain pedal, a thimble and a spring, wherein the second valve body is arranged at one end of the first valve body, one end of the thimble is positioned in the second valve body and synchronously pushes away a conical valve core and a steel ball, the spring is sleeved on the thimble, the conical valve core is positioned outside the second valve body, the oil drain pedal is a lever and is rotationally connected to the second valve body, and one end of the oil drain pedal is propped against the outer end of the conical valve core;
and in an oil return state of the oil cylinder, the cone valve core opens a communication channel between the first inner cavity and the second inner cavity, the steel ball opens a communication channel between the second inner cavity and the third inner cavity, and hydraulic oil in the oil cylinder flows back to the first oil tank and the second oil tank through the first inner cavity and the second inner cavity. When the oil cylinder is in an oil return state, one side of the steel ball is propped against the cone valve core, and the other end of the steel ball is propped against the thimble.
The outer wall of the first valve body is provided with a first sealing ring for isolating the first inner cavity from the second inner cavity and a second sealing ring for isolating the second inner cavity from the third inner cavity, and the second inner cavity is positioned between the first sealing ring and the second sealing ring.
The rotating connection part of the pedal rod is provided with a pedal joint capable of locking the swinging angle of the pedal rod.
After adopting the structure, the invention has the following advantages: the pressing foot pedal rod is stepped on, the pressing wheel seat makes arc movement around the center of the winding shaft, the pump core is pressed downwards through the pressing wheel until hydraulic oil of the cone valve core in the pump sleeve cavity reaches the valve body cavity through the oil way, the first cavity is closed under the action of pressure F due to the increase of the flow of the hydraulic oil, the ball valve of the second cavity is jacked up under the action of pressure F to reach the first cavity of the valve plate, and then the hydraulic oil reaches the outlet of the one-way throttle valve through the oil way, so that the oil discharging action is completed; when the stepping force on the pedal rod is removed, the valve core resets to an original position under the action of the upward reset force of the spring, suction force F is generated in the cavity of the pump sleeve, the conical valve core in the first inner cavity of the valve body is closed under the action of F suction, the ball valve on the right side is opened, hydraulic oil in the oil tank is sucked into the cavity of the pump sleeve through the oil way, oil suction is completed, and the repeated movement is used for completing the work.
Drawings
Fig. 1 is a schematic sectional view of a manual hydraulic split pump according to the present invention.
Fig. 2 is a right-side view of the manual hydraulic split pump of the present invention.
Fig. 3 is a schematic cross-sectional structure of a valve plate according to the present invention.
Fig. 4 is an enlarged schematic view of the portion a in fig. 3.
Fig. 5 is a schematic diagram of the connection of the outlet of the cartridge valve to the cylinder.
Fig. 6 is a schematic diagram of the connection of the oil inlet of the cartridge valve with the oil tank.
Fig. 7 is a schematic diagram of connection between an oil inlet and an oil outlet of a cartridge valve and a pressure oil suction device.
As shown in the figure:
1.1, a first oil tank, 1.2, a second oil tank, 1.3, a valve plate, 2.1, a pump sleeve, 2.2, a pump core, 2.3, a spring, 2.4, a spring cover, 2.5, a pinch roller seat, 2.6, a mounting seat, 2.7, a pedal rod, 2.8, a pinch roller, 2.9, a first hinge shaft, 3.0, a second hinge shaft, 4.1, a first valve body, 4.2, a steel ball, 4.3, a cone valve sleeve, 4.4, a cone valve core, 4.5, a cone spring, 4.6, a valve cover, 4.7, a first sealing ring, 4.8, a second sealing ring, 5.1, a second valve body, 5.2, a drain pedal, 5.3, a thimble, 5.4, a spring, 6, a one-way throttle valve, 7, a first pipeline, 8, a second pipeline, 9 and a third pipeline.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
1-4, the manual hydraulic split pump comprises a pump body, a pressure oil sucking device capable of sucking oil and discharging oil, a cartridge valve internally provided with two one-way valves and a pressure relief device capable of opening the oil cylinder to be communicated with the pump body; the pump body comprises a first oil tank 1.1, a second oil tank 1.2 and a valve plate, and the first oil tank 1.1, the second oil tank 1.2 and the valve plate are communicated with each other; the pressure absorbing device is communicated with the valve plate 1.3 of the pump body 1, the pressure absorbing device is communicated with the oil pump through a cartridge valve, and the pressure releasing device is arranged on the pump body and is positioned at one end of the cartridge valve; the cartridge valve is mounted on the pump body.
The cartridge valve comprises a first valve body 4.1, a steel ball 4.2, a cone valve sleeve 4.3, a cone valve core 4.4, a cone spring 4.5 and a valve cover 4.6 which are arranged in a valve plate; the cone valve sleeve 4.3 and the ball valve are both equivalent to one-way valve, a first inner cavity communicated with the oil cylinder, a second inner cavity communicated with the oil sucking device and a third inner cavity are arranged in the first valve body 4.1, a first sealing ring 4.7 for isolating the first inner cavity from the second inner cavity and a second sealing ring 4.8 for isolating the second inner cavity from the third inner cavity are arranged on the outer wall of the first valve body 4.1, and the second inner cavity is located between the first sealing ring 4.7 and the second sealing ring 4.8.
The cone valve sleeve 4.3 and the cone valve core 4.4 are arranged in the first inner cavity, the tail part of the cone valve sleeve is propped against the valve cover 4.6 by the cone spring 4.5, the valve cover 4.6 is fixed on the first valve body 4.1, one end of the cone spring 4.5 is propped against the cone valve core 4.4, the other end of the cone spring is propped against the valve cover 4.6, in an unpressurized oil state, the cone valve core 4.4 is separated from a channel of the first inner cavity and a channel of the second inner cavity by the elasticity of the cone spring 4.5, in a pressurized oil state, the cone valve core 4.4 is pushed by hydraulic oil to stretch inwards against the elasticity of the cone spring 4.5, so that the channel of the first inner cavity and the channel of the second inner cavity is opened, and the hydraulic oil enters the oil cylinder from the channel. The conical valve core 4.4 is used for jacking or closing a communication channel between the first inner cavity and the second inner cavity, the steel ball 4.2 is positioned in the second inner cavity, and the steel ball 4.2 is used for jacking or closing a communication channel between the second inner cavity and the third inner cavity;
in the non-pressurized state, the cone valve core 4.4 is sealed by the elastic force of the cone spring 4.5 and the channels of the first inner cavity and the second inner cavity, and in the pressurized state, the cone valve core 4.4 is pushed by hydraulic oil to overcome the elastic force of the cone spring 4.5 and stretch inwards. The pressure oil absorbing device is in a pressure oil state, the conical valve core 4.4 pushes up a communication channel between the first inner cavity and the second inner cavity under the action of hydraulic oil, the steel ball 4.2 closes a communication channel between the second inner cavity and the third inner cavity, and the hydraulic oil in the pump sleeve 2.1 passes through the first inner cavity and the one-way throttle valve 6 to the oil cylinder;
in the oil suction state of the oil suction device, the first inner cavity and the second inner cavity are partitioned by the elastic force of the conical valve core 4.4 through the conical spring 4.5, the conical valve core 4.4 closes the communication channel between the first inner cavity and the second inner cavity, the steel ball 4.2 opens the communication channel between the second inner cavity and the third inner cavity, and oil in the first oil tank 1.1 and the second oil tank 1.2 enters the pump sleeve 2.1.
The pressure oil absorbing device comprises a pump sleeve 2.1, a pump core 2.2, a spring 2.3, a spring cover 2.4, a pinch roller seat 2.5, an installation seat 2.6, a pedal rod 2.7 and a pinch roller 2.8; the pump is characterized in that the mounting seat 2.6 is fixed on the side wall of the pump body 1, the pump sleeve 2.1 is mounted on the valve plate 1.3 and is internally communicated, an inner cavity for the pump core 2.2 to slide is formed in the pump core 2.2, the spring cover 2.4 is axially limited on the pump core 2.2, the spring 2.3 is sleeved outside the pump sleeve 2.1, the top end of the spring 2.3 is abutted against the spring cover 2.4, the bottom end of the spring 2.3 is abutted against the top surface of the valve plate 1.3, the pedal rod 2.7 is connected with the pinch roller seat 2.5, the pinch roller seat 2.5 is provided with a first hinge shaft 2.9 and a second hinge shaft 3.0, the first hinge shaft 2.9 is located on the pinch roller seat 2.5 and the mounting seat 2.6, the second hinge shaft 3.0 is located on the pinch roller seat 2.5, the pinch roller 2.8 is sleeved outside the second hinge shaft 3.0, the pinch roller 2.8 is located at the top end of the pump core 2.2 and is in contact with the top end of the pinch roller seat, and the first hinge shaft 2.9 is located at the position beside the first hinge shaft 2.2.0. Swinging the pedal lever 2.7 downwards to enable the pinch roller 2.8 to push the pump core 2.2 downwards, thereby extruding the oil in the pump sleeve 2.1 into the oil cylinder; the pedal rod 2.7 is loosened, the pump core 2.2 is reset under the action of the spring 2.3, the pump core 2.2 is upwards, and the pump sleeve 2.1 generates negative pressure, so that the pump sleeve 2.1 absorbs oil from the first oil tank 1.1 and the second oil tank 1.2.
The pressure relief device comprises a second valve body 5.1, a drain pedal 5.2, a thimble 5.3 and a spring 5.4, wherein the second valve body 5.1 is arranged at one end of the first valve body 4.1, one end of the thimble 5.3 is positioned in the second valve body 5.1 and synchronously pushes away a conical valve core 4.4 and a steel ball 4.2, the spring 5.4 is sleeved on the thimble 5.3, the conical valve core 4.4 is positioned outside the second valve body 5.1, the drain pedal 5.2 is a lever and is rotatably connected to the second valve body 5.1, and one end of the drain pedal 5.2 is propped against the outer end of the conical valve core 4.4; in an oil return state of the oil cylinder, the conical valve core 4.4 opens a communication channel between the first inner cavity and the second inner cavity, the steel ball 4.2 opens a communication channel between the second inner cavity and the third inner cavity, and hydraulic oil in the oil cylinder flows back into the first oil tank 1.1 and the second oil tank 1.2 through the first inner cavity and the second inner cavity. When the oil cylinder is in an oil return state, one side of the steel ball 4.2 is propped against the cone valve core 4.4, the other end is propped against the thimble 5.3, namely the thimble 5.3 is propped inwards to prop the steel ball 4.2, so that a communication channel between the second inner cavity and the third inner cavity is opened, and then the steel ball 4.2 is propped inwards to prop the cone valve core 4.4, so that a communication channel between the first inner cavity and the second inner cavity is opened, the first inner cavity, the second inner cavity and the third inner cavity are opened, a loop is directly formed, and hydraulic oil returns to an oil tank through an oil way.
The rotating connection part of the pedal lever 2.7 is provided with the pedal joint 3.1 capable of locking the swinging angle of the pedal lever 2.7, so that the pedal lever can be conveniently rotated to be retracted vertically on the ground when the pedal lever is not used.
As shown in fig. 5, one end of a first pipeline of the cartridge valve is communicated with the first inner cavity, the other end of the first pipeline is communicated with the oil cylinder, and the other branch pipeline is a process port and is plugged.
As shown in fig. 6, one end of the second pipeline of the cartridge valve is communicated with the third inner cavity, the other end of the second pipeline is communicated with the first oil tank and the second oil tank, and the other branch pipeline is a process port and is blocked.
As shown in fig. 7, one end of a third pipeline of the cartridge valve is communicated with the second inner cavity, the other end of the third pipeline is communicated with a pump sleeve 2.1 of the pressure oil suction device, and the other branch pipeline is a process port and is plugged.
When the hydraulic oil pump is in operation, the presser foot pedal lever is stepped on, the presser foot seat moves in an arc manner around the center of the outer hexagonal screw rod, the pump core is pressed downwards through the pressing wheel until hydraulic oil in the pump sleeve cavity reaches the second cavity of the cartridge valve through the oil way, and as the flow rate of the hydraulic oil is increased, the ball valve in the second cavity is jacked up under the action of pressure F, namely the conical valve core jacks up the communication channel between the first cavity and the second cavity under the action of the hydraulic oil, and meanwhile, the steel ball is used for closing the communication channel between the second cavity and the third cavity, so that the hydraulic oil is led to the first cavity of the cartridge valve, and then led to the outlet of the one-way throttle valve through the oil way, and the oil outlet action is completed; when the stepping force on the pedal rod is removed, the valve core resets to an original position under the action of the upward reset force of the spring, and meanwhile, suction force Fsuction is generated in the cavity of the small pump sleeve, under the action of the F suction, the cone valve core of the first inner cavity of the cartridge valve is sucked and closed, namely, the communication channel of the first inner cavity and the second inner cavity is closed, the ball valve in the second inner cavity is sucked and opened, namely, the communication channel of the second inner cavity and the third inner cavity is opened, so that hydraulic oil in the oil tank is sucked into the cavity of the pump sleeve through an oil way, oil suction action is completed, and repeated movement is completed.
Claims (4)
1. A manual hydraulic split pump, characterized in that: the hydraulic oil pump comprises a pump body, a pressure oil suction device capable of sucking oil and discharging oil, a cartridge valve internally provided with two one-way valves and a pressure relief device capable of opening the oil cylinder to be communicated with the pump body; the pump body comprises a first oil tank (1.1), a second oil tank (1.2) and a valve plate (1.3), wherein the first oil tank (1.1), the second oil tank (1.2) and the valve plate (1.3) are internally communicated; the pressure absorbing device is communicated with a valve plate (1.3) of the pump body (1), the pressure absorbing device is communicated with the pump body through a cartridge valve, and the pressure releasing device is arranged on the pump body and is positioned at one end of the cartridge valve; the cartridge valve is arranged on the pump body and comprises a first valve body (4.1), a steel ball (4.2), a cone valve sleeve (4.3), a cone valve core (4.4), a cone spring (4.5) and a valve cover (4.6), wherein the first valve body is arranged in the valve plate (1.3); the valve is characterized in that a first inner cavity communicated with the oil cylinder, a second inner cavity communicated with the oil suction device and a third inner cavity are arranged in the first valve body (4.1), the cone valve sleeve (4.3) and the cone valve core (4.4) are arranged in the first inner cavity, the tail part of the cone valve sleeve is propped against the valve cover (4.6) by the cone spring (4.5), the valve cover (4.6) is fixed on the first valve body (4.1), the cone valve core (4.4) props up or closes a communication channel between the first inner cavity and the second inner cavity, the steel ball (4.2) is positioned in the second inner cavity, and the steel ball (4.2) props up or closes a communication channel between the second inner cavity and the third inner cavity; wherein:
the pressure oil absorbing device comprises a pump sleeve (2.1), a pump core (2.2), a pressure oil absorbing spring (2.3), a spring cover (2.4), a pinch roller seat (2.5), a mounting seat (2.6), a pedal rod (2.7) and a pinch roller (2.8); the pump is characterized in that the mounting seat (2.6) is fixed on the side wall of the pump body (1), the pump sleeve (2.1) is mounted on the valve plate (1.3) and is mutually communicated with the valve plate (1.3), an inner cavity for the sliding of the pump core (2.2) is arranged in the pump sleeve (2.1), the spring cover (2.4) is axially limited on the pump core (2.2), the pressure suction oil spring (2.3) is sleeved outside the pump sleeve (2.1), the top end of the pressure suction oil spring (2.3) is propped against the spring cover (2.4), the bottom end of the pressure suction oil spring (2.3) is propped against the top surface of the valve plate (1.3), the foot bar (2.7) is connected with the pressure wheel seat (2.5), the pressure wheel seat (2.5) is provided with a first hinge shaft (2.9) and a second hinge shaft ((3.0), the first hinge shaft (2.9) is positioned on the pressure wheel seat (2.5) and is positioned on the pressure hinge shaft (2.6), the pressure wheel seat (2.0) is positioned on the pressure wheel seat (2.5), and the top end of the pressure wheel seat (2.0) is positioned on the pressure wheel seat (2.0) and is positioned beside the pressure wheel seat (2.0;
the pressure oil sucking device is in a pressure oil state, the conical valve core (4.4) jacks up a communication channel between the first inner cavity and the second inner cavity, the steel ball (4.2) closes a communication channel between the second inner cavity and the third inner cavity, and hydraulic oil in the pump sleeve (2.1) passes through the first inner cavity and the one-way throttle valve (6) to be in the oil cylinder; the oil suction device is in an oil suction state, the conical valve core (4.4) closes a communication channel between the first inner cavity and the second inner cavity, the steel ball (4.2) opens a communication channel between the second inner cavity and the third inner cavity, and oil in the first oil tank (1.1) and the second oil tank (1.2) enters the pump sleeve (2.1);
the pressure relief device comprises a second valve body (5.1), a pressure relief pedal (5.2), a thimble (5.3) and a pressure relief spring (5.4), wherein the second valve body (5.1) is arranged at one end of the first valve body (4.1), one end of the thimble (5.3) is positioned in the second valve body (5.1) and synchronously pushes away a conical valve core (4.4) and a steel ball (4.2), the pressure relief spring (5.4) is sleeved on the thimble (5.3), the conical valve core (4.4) is positioned outside the second valve body (5.1) in a stretching mode, the pressure relief pedal (5.2) is a lever and is connected to the second valve body (5.1) in a rotating mode, and one end of the pressure relief pedal (5.2) is propped against the outer end of the thimble (5.3);
the oil cylinder is in an oil return state, the conical valve core (4.4) opens a communication channel between the first inner cavity and the second inner cavity, the steel ball (4.2) opens a communication channel between the second inner cavity and the third inner cavity, and hydraulic oil in the oil cylinder flows back into the first oil tank (1.1) and the second oil tank (1.2) through the first inner cavity and the second inner cavity.
2. The manual hydraulic split pump of claim 1, wherein: when the oil cylinder is in an oil return state, one side of the steel ball (4.2) is propped against the cone valve core (4.4), and the other end of the steel ball is propped against the thimble (5.3).
3. The manual hydraulic split pump of claim 1, wherein: the outer wall of the first valve body (4.1) is provided with a first sealing ring (4.7) for isolating the first inner cavity from the second inner cavity and a second sealing ring (4.8) for isolating the second inner cavity from the third inner cavity, and the second inner cavity is positioned between the first sealing ring (4.7) and the second sealing ring (4.8).
4. The manual hydraulic split pump of claim 1, wherein: the rotating connection part of the pedal lever (2.7) is provided with a pedal joint (3.1) capable of locking the swinging angle of the pedal lever (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 CN108843530A (en) | 2018-11-20 |
| CN108843530B true CN108843530B (en) | 2023-06-27 |
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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 |
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| CN (1) | CN108843530B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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 |
| 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 |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108843530A (en) | 2018-11-20 |
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