CN104989686A - Hydraulic unit achieving mutual potential energy utilization in pairing manner and driving manner thereof - Google Patents
Hydraulic unit achieving mutual potential energy utilization in pairing manner and driving manner thereof Download PDFInfo
- Publication number
- CN104989686A CN104989686A CN201510400282.9A CN201510400282A CN104989686A CN 104989686 A CN104989686 A CN 104989686A CN 201510400282 A CN201510400282 A CN 201510400282A CN 104989686 A CN104989686 A CN 104989686A
- Authority
- CN
- China
- Prior art keywords
- hydraulic
- hydraulic press
- piston cylinder
- potential
- driving system
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/06—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with two or more servomotors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/14—Energy-recuperation means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
- F15B2211/71—Multiple output members, e.g. multiple hydraulic motors or cylinders
- F15B2211/7142—Multiple output members, e.g. multiple hydraulic motors or cylinders the output members being arranged in multiple groups
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
- F15B2211/78—Control of multiple output members
Abstract
The invention discloses a hydraulic unit achieving mutual potential energy utilization in a pairing manner and a driving manner thereof. The hydraulic unit at least comprises two hydraulic machines which are the first hydraulic machine and the second hydraulic machine. A potential energy balance system and a hydraulic drive system are arranged between the two hydraulic machines. When the first hydraulic machine conducts a fast drop action, a fast return action of the second hydraulic machine is achieved; when the second hydraulic machine conducts a fast drop action, a fast return action of the first hydraulic machine is achieved. The storage and supplementation functions of the potential energy balance system are used for enabling the hydraulic machines conducting the fast return action to acquire the matched hydraulic oil amount. Through real-time mutual utilization of potential energy of the hydraulic machines, an energy conversion link is omitted, and the work efficiency of a hydraulic system is improved.
Description
Technical field
The present invention relates to a kind of method for driving of hydraulic press, particularly a kind ofly with group, hydraulic pressure unit that potential energy utilizes mutually and driving mode thereof are realized to form, for realizing the mutual utilization of potential energy between multiple stage hydraulic press, energy-saving and cost-reducing.
Background technique
Along with developing rapidly of industry in global range, energy shortage and environmental pollution problem are on the rise, and " low-carbon economy " based on low energy consumption, low stain has become the focus of global concern.Wherein hydraulic forming equipment is because its consumption is large, energy consumption is high, efficiency is low, and efficiency is generally 6% to 40%, becomes one of main object of people's common concern gradually.
During hydraulic press work, the quality of slide block is heavy, inertia is large, and slide block relies on himself Action of Gravity Field and oil outlet throttle valve adjustment, declines fast.In decentralization process, gravitational potential energy and the kinetic energy overwhelming majority are converted into thermal dissipation in air at the restriction of valve.And hydraulic press work is frequent, not only causes a large amount of energy dissipations, and add the carbon emission of system, run counter to development low-carbon economy.
For this situation, Chinese scholars proposes the method that various hydraulic press potential energy is recycled.Reclaim the potential energy converting and energy that declined by hydraulic press exactly and become to be easy to the energy storage of storage in energy-storage travelling wave tube, then discharge recycling according to the actual needs.According to the difference of energy storage mode, be generally divided into Electric energy type, mechanical energy formula and hydraulic energy formula.Mainly concentrate on the exploitation of electric power type energy-recuperation system and the utilization of hydraulic secondary component, in electric power type Energy Recovery Technology, experienced by multiple links such as motor, electronic/motor, energy-storage travelling wave tube (battery or super capacitor) and oil hydraulic pump due to Conversion of Energy, the efficiency of transformation of energy is lower.
Although these methods can reach the effect of energy recovery and reuse above, be the increase in the burden of system and the complexity of control, add the link of recovery and reuse simultaneously, reduce the efficiency of Energy harvesting.
Summary of the invention
The present invention is the deficiency for avoiding existing for above-mentioned prior art, there is provided a kind of, with group, hydraulic pressure unit that potential energy utilizes mutually and driving mode thereof are realized to form, by mutually utilizing in real time hydraulic press potential energy, reduce the link of transformation of energy, improve the working efficiency of hydraulic system.
The present invention is that technical solution problem adopts following technological scheme:
The present invention with group to the structural feature that form realizes the hydraulic pressure unit that potential energy utilizes mutually is: described hydraulic pressure unit at least comprises two groups of hydraulic presses, is the first hydraulic press and the second hydraulic press respectively; And potential-energy balance system and hydraulic driving system are set between two groups of hydraulic presses;
The oil hydraulic cylinder of described first hydraulic press is made up of first piston cylinder and the first plunger case, and the piston rod of described first piston cylinder and the plunger rod of the first plunger case are connected with the first slider of hydraulic press jointly; First piston cylinder cavity of resorption is connected with described potential-energy balance system and hydraulic driving system respectively by oil circuit; First piston cylinder epicoele one tunnel is communicated with the first fuel tank by the first liquid-filling valve, and another road is connected with described hydraulic driving system by the first one-way valve; The hydraulic control mouth of described first liquid-filling valve is connected with described hydraulic driving system; The conducting direction of described first one-way valve is to described first hydraulic press by described hydraulic driving system; Described first plunger case is connected with described hydraulic driving system;
The oil hydraulic cylinder of described second hydraulic press is made up of the second piston cylinder and the second plunger case, and the piston rod of described second piston cylinder and the plunger rod of the second plunger case are connected with the second slider of hydraulic press jointly; Second piston cylinder cavity of resorption is connected with described potential-energy balance system and hydraulic driving system respectively by oil circuit; Second piston cylinder epicoele one tunnel is communicated with the second fuel tank by the second liquid-filling valve, and another road is communicated with described hydraulic driving system by the second one-way valve; The hydraulic control mouth of described second liquid-filling valve is connected with described hydraulic driving system; The conducting direction of described second one-way valve is to described second hydraulic press by described hydraulic driving system; Described second plunger case is connected with described hydraulic driving system.
The present invention realizes the driving mode of the hydraulic pressure unit that potential energy utilizes mutually to form feature with group is:
The first hydraulic press be in action is fallen soon and time, declined fast by the plunger rod of the first plunger case described in described hydraulic drive system drives, the piston rod of described first slider of hydraulic press and first piston cylinder is driven to decline fast, the hydraulic oil of discharging with first piston cylinder cavity of resorption, through described potential-energy balance system introducing second piston cylinder cavity of resorption, promotes described second hydraulic press with this and realizes returning to action;
The second hydraulic press be in action is fallen soon and time, declined fast by the plunger rod of the second plunger case described in described hydraulic drive system drives, the piston rod of described second slider of hydraulic press and the second piston cylinder is driven to decline fast, the hydraulic oil of discharging with the second piston cylinder cavity of resorption, through described potential-energy balance system introducing first piston cylinder cavity of resorption, promotes described first hydraulic press with this and realizes returning to action;
Utilize the storage of described potential-energy balance system and supplementary functions to make to be in the hydraulic press fallen soon under action and obtain the hydraulic-oil quantity matched.
The present invention realizes the driving mode of the hydraulic pressure unit that potential energy utilizes mutually to form feature with group is also: after described first hydraulic press and described second hydraulic press complete and fall soon and return to action, close described potential-energy balance system; Described first hydraulic press and the second hydraulic press under the driving of hydraulic driving system, the separate compacting completed in technological requirement, off-load, pressurize and slow return each action.
Compared with the prior art, beneficial effect of the present invention is embodied in:
1, hydraulic press is grouping by the present invention, and the potential energy that wherein hydraulic press is fallen soon, for the quick rising of other hydraulic press, realizes directly mutually utilizing of potential energy, and the less conversion links of potential energy, decreases energy loss, improve the efficiency of hydraulic system.
2, the present invention is by arranging plunger case for hydraulic press, by the quick decline of the flow input tape hydrodynamic press slide of plunger case.When not relying on slide block gravity, less flow input can realize the quick decline of hydraulic press, reduces the installed power of drive system, decreasing the energy loss because using throttle valve to produce, reducing the carbon emission of system.
3, the present invention is when organizing right hydraulic press in compacting action, and by potential-energy balance system closing, the action of separate unit hydraulic press complete independently, reduces the installed power that hydraulic driving system is total, reduce the energy ezpenditure that hydraulic system drive part produces because of off-load.
Accompanying drawing explanation
Fig. 1 is hydraulic pressure unit structural representation of the present invention;
Number in the figure: 1 first hydraulic press, 2 second hydraulic presses, 11 first piston cylinders, 12 first plunger cases, 13 first slider of hydraulic press, 14 first liquid-filling valves, 15 first fuel tanks, 16 first one-way valves, 21 second piston cylinders, 22 second plunger cases, 23 second slider of hydraulic press, 24 second liquid-filling valves, 25 second fuel tanks, 26 second one-way valves.
Embodiment
See Fig. 1, the present embodiment realizes in the hydraulic pressure unit that potential energy utilizes mutually form with group, and hydraulic pressure unit at least comprises two groups of hydraulic presses, is the first hydraulic press 1 and the second hydraulic press 2 respectively; And potential-energy balance system and hydraulic driving system are set between two groups of hydraulic presses.
As shown in Figure 1, the oil hydraulic cylinder of the first hydraulic press 1 is made up of first piston cylinder 11 and the first plunger case 12, and the piston rod of described first piston cylinder 11 and the plunger rod of the first plunger case 12 are connected with the first slider of hydraulic press 13 jointly; First piston cylinder cavity of resorption is connected with described potential-energy balance system and hydraulic driving system respectively by oil circuit; First piston cylinder epicoele one tunnel is communicated with the first fuel tank 15 by the first liquid-filling valve 14, and another road is connected with described hydraulic driving system by the first one-way valve 16; The hydraulic control mouth of described first liquid-filling valve 14 is connected with described hydraulic driving system; The conducting direction of described first one-way valve 16 is to described first hydraulic press 1 by described hydraulic driving system; Described first plunger case 12 is connected with described hydraulic driving system;
As shown in Figure 1, the oil hydraulic cylinder of the second hydraulic press 2 is made up of the second piston cylinder 21 and the second plunger case 22, and the piston rod of described second piston cylinder 21 and the plunger rod of the second plunger case 22 are connected with the second slider of hydraulic press 23 jointly; Second piston cylinder cavity of resorption is connected with described potential-energy balance system and hydraulic driving system respectively by oil circuit; Second piston cylinder epicoele one tunnel is communicated with the second fuel tank 25 by the second liquid-filling valve 24, and another road is connected with described hydraulic driving system by the second one-way valve 26; The hydraulic control mouth of described second liquid-filling valve 24 is connected with described hydraulic driving system; The conducting direction of described second one-way valve 26 is to described second hydraulic press 2 by described hydraulic driving system; Described second plunger case 22 is connected with described hydraulic driving system.
In the present embodiment with group to the driving mode that form realizes the hydraulic pressure unit that potential energy utilizes mutually be:
The first hydraulic press 1 be in action is fallen soon and time, declined fast by the plunger rod of the first plunger case 12 described in described hydraulic drive system drives, the piston rod of described first slider of hydraulic press 13 and first piston cylinder 12 is driven to decline fast, now, the negative pressure formed in first piston cylinder epicoele is utilized to open the first liquid-filling valve 14, the fluid in the first fuel tank 15 is made to inject first piston cylinder epicoele, the hydraulic oil of discharging with first piston cylinder cavity of resorption is through described potential-energy balance system introducing second piston cylinder cavity of resorption, the piston rod of described second piston cylinder is driven to rise fast, and promote the second press slide 23 and rise fast, promote the second hydraulic press with this to realize returning to action.Meanwhile, the hydraulic control mouth pressure of the second liquid-filling valve 24 raises, and the second liquid-filling valve 24 is opened, and the hydraulic oil of the second piston cylinder epicoele flows back into the second fuel tank 25 through liquid-filling valve 24.
The second hydraulic press 2 be in action is fallen soon and time, declined fast by the plunger rod of the second plunger case 22 described in described hydraulic drive system drives, the piston rod of described second slider of hydraulic press 23 and the second piston cylinder 21 is driven to decline fast, now, utilize the negative pressure formed in the second piston cylinder epicoele to open the second liquid-filling valve 24, hydraulic oil flows into described second piston cylinder epicoele through described second fuel tank 25; The hydraulic oil of discharging with the second piston cylinder cavity of resorption is through described potential-energy balance system introducing first piston cylinder cavity of resorption, the piston rod of first piston cylinder is driven to rise fast, and promote described first press slide 13 and rise fast, promote described first hydraulic press with this and realize returning to action.Meanwhile, the hydraulic control mouth pressure of the first liquid-filling valve 14 raises, and the first liquid-filling valve 14 is opened, and the hydraulic oil of first piston cylinder epicoele flows back into the first fuel tank 15 through the first liquid-filling valve 14.
First liquid-filling valve 14 and the second liquid-filling valve 24 are Pilot operated check valve, when the pressure of its hydraulic control mouth is greater than cracking pressure, namely in two-way admittance state.
In the present embodiment, hydraulic pressure unit is grouping with two hydraulic presses, under the driving of hydraulic driving system, for being in the first piston cylinder 11 on neutral position and dividing the total cross sectional area being in the first plunger case 12 of the first piston cylinder left and right sides should meet the demand of the maximum plastic force of hydraulic press in the first hydraulic press 1.Under the traffic driven of hydraulic driving system, the setting of total cross-section area of two the first plunger cases 12 meets the speed requirement that hydraulic press declines fast to be as the criterion; Also be same requirement for second piston cylinder 21 in the second hydraulic press 2 and two the second plunger cases 22.
Utilize the storage of potential-energy balance system and supplementary functions to make to be in the hydraulic press returned under action and obtain the hydraulic-oil quantity matched with action.Namely: when the flow being in the hydraulic press fallen soon in action is greater than the flow being in the hydraulic press demand returned in action, potential-energy balance system is storing function, on the contrary be for the hydraulic press returned in action provides makeup energy by described hydraulic driving system.
After described first hydraulic press 1 and described second hydraulic press 2 complete and fall soon and return to action, close described potential-energy balance system; Described first hydraulic press 1 and the second hydraulic press 2 under the driving of hydraulic driving system, the separate compacting completed in technological requirement, off-load, pressurize and slow return each action.
The present invention realizes to form the hydraulic pressure unit that potential energy utilizes mutually with group, and its hydraulic pressure unit at least comprises two groups of hydraulic presses, and the potential energy that the multiple stage hydraulic press adapted for action beat can realize each other in the same way utilizes.
Claims (3)
1. realize to form the hydraulic pressure unit that potential energy utilizes mutually with group, it is characterized in that described hydraulic pressure unit at least comprises two groups of hydraulic presses, is the first hydraulic press (1) and the second hydraulic press (2) respectively; And potential-energy balance system and hydraulic driving system are set between two groups of hydraulic presses;
The oil hydraulic cylinder of described first hydraulic press (1) is made up of first piston cylinder (11) and the first plunger case (12), and the piston rod of described first piston cylinder (11) and the plunger rod of the first plunger case (12) are connected with the first slider of hydraulic press (13) jointly; First piston cylinder cavity of resorption is connected with described potential-energy balance system and hydraulic driving system respectively by oil circuit; First piston cylinder epicoele one tunnel is communicated with the first fuel tank (15) by the first liquid-filling valve (14), and another road is connected with described hydraulic driving system by the first one-way valve (16); The hydraulic control mouth of described first liquid-filling valve (14) is connected with described hydraulic driving system; The conducting direction of described first one-way valve (16) is to described first hydraulic press (1) by described hydraulic driving system; Described first plunger case (12) is connected with described hydraulic driving system;
The oil hydraulic cylinder of described second hydraulic press (2) is made up of the second piston cylinder (21) and the second plunger case (22), and the piston rod of described second piston cylinder (21) and the plunger rod of the second plunger case (22) are connected with the second slider of hydraulic press (23) jointly; Second piston cylinder cavity of resorption is connected with described potential-energy balance system and hydraulic driving system respectively by oil circuit; Second piston cylinder epicoele one tunnel is communicated with the second fuel tank (25) by the second liquid-filling valve (24), and another road is communicated with described hydraulic driving system by the second one-way valve (26); The hydraulic control mouth of described second liquid-filling valve (24) is connected with described hydraulic driving system; The conducting direction of described second one-way valve (26) is to described second hydraulic press (2) by described hydraulic driving system; Described second plunger case (22) is connected with described hydraulic driving system.
2. the driving mode with group, form being realized to the hydraulic pressure unit that potential energy utilizes mutually according to claim 1, is characterized in that:
The first hydraulic press (1) be in action is fallen soon and time, declined fast by the plunger rod of the first plunger case (12) described in described hydraulic drive system drives, the piston rod of described first slider of hydraulic press (13) and first piston cylinder (12) is driven to decline fast, the hydraulic oil of discharging with first piston cylinder cavity of resorption, through described potential-energy balance system introducing second piston cylinder cavity of resorption, promotes the realization of described second hydraulic press (2) with this and returns to action;
The second hydraulic press (2) be in action is fallen soon and time, declined fast by the plunger rod of the second plunger case (22) described in described hydraulic drive system drives, the piston rod of described second slider of hydraulic press (23) and the second piston cylinder (21) is driven to decline fast, the hydraulic oil of discharging with the second piston cylinder cavity of resorption, through described potential-energy balance system introducing first piston cylinder cavity of resorption, promotes the realization of described first hydraulic press (1) with this and returns to action;
Utilize the storage of described potential-energy balance system and supplementary functions to make to be in the hydraulic press fallen soon under action and obtain the hydraulic-oil quantity matched.
3. the driving mode with group, form being realized to the hydraulic pressure unit that potential energy utilizes mutually according to claim 1, it is characterized in that: after described first hydraulic press (1) and described second hydraulic press (2) complete and fall soon and return to action, close described potential-energy balance system; Described first hydraulic press (1) and the second hydraulic press (2) under the driving of hydraulic driving system, the separate compacting completed in technological requirement, off-load, pressurize and slow return each action.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610972704.4A CN106321535B (en) | 2015-07-08 | 2015-07-08 | The hydraulic pressure unit that potential energy is mutually utilized is realized to form with group |
| CN201510400282.9A CN104989686B (en) | 2015-07-08 | 2015-07-08 | Hydraulic unit achieving mutual potential energy utilization in pairing manner and driving method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510400282.9A CN104989686B (en) | 2015-07-08 | 2015-07-08 | Hydraulic unit achieving mutual potential energy utilization in pairing manner and driving method thereof |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610972704.4A Division CN106321535B (en) | 2015-07-08 | 2015-07-08 | The hydraulic pressure unit that potential energy is mutually utilized is realized to form with group |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104989686A true CN104989686A (en) | 2015-10-21 |
| CN104989686B CN104989686B (en) | 2017-01-11 |
Family
ID=54301548
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610972704.4A Active CN106321535B (en) | 2015-07-08 | 2015-07-08 | The hydraulic pressure unit that potential energy is mutually utilized is realized to form with group |
| CN201510400282.9A Expired - Fee Related CN104989686B (en) | 2015-07-08 | 2015-07-08 | Hydraulic unit achieving mutual potential energy utilization in pairing manner and driving method thereof |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610972704.4A Active CN106321535B (en) | 2015-07-08 | 2015-07-08 | The hydraulic pressure unit that potential energy is mutually utilized is realized to form with group |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN106321535B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106553370A (en) * | 2016-11-30 | 2017-04-05 | 合肥工业大学 | A kind of pair of performance element hydraulic press |
| CN107269600A (en) * | 2017-07-31 | 2017-10-20 | 中国重型机械研究院股份公司 | A kind of new fuel tank air inlet and outlet device and method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4218952A1 (en) * | 1992-06-10 | 1993-12-16 | Rexroth Mannesmann Gmbh | Hydraulic drive for sheet metal forming machine - has two differential cylinders for press pistons, suction oil pump and delivery oil pump for cylinder halves |
| US5499525A (en) * | 1992-03-27 | 1996-03-19 | Mannesmann Rexroth Gmbh | Hydraulic drive for a sheet metal forming press |
| CN2632368Y (en) * | 2003-07-10 | 2004-08-11 | 天津市天锻压力机有限公司 | Precision numerical control stretching hydropress shaping correcting controller |
| CN101307685A (en) * | 2008-07-09 | 2008-11-19 | 丁长良 | Long stroke hydraulic pumping unit |
| CN102235159A (en) * | 2010-04-28 | 2011-11-09 | 陈万仁 | Hydraulic energy-saving multi-well pumping unit |
| CN102363375A (en) * | 2011-06-30 | 2012-02-29 | 天津市天锻压力机有限公司 | Fast energy-saving single-action hydraulic machine |
-
2015
- 2015-07-08 CN CN201610972704.4A patent/CN106321535B/en active Active
- 2015-07-08 CN CN201510400282.9A patent/CN104989686B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5499525A (en) * | 1992-03-27 | 1996-03-19 | Mannesmann Rexroth Gmbh | Hydraulic drive for a sheet metal forming press |
| DE4218952A1 (en) * | 1992-06-10 | 1993-12-16 | Rexroth Mannesmann Gmbh | Hydraulic drive for sheet metal forming machine - has two differential cylinders for press pistons, suction oil pump and delivery oil pump for cylinder halves |
| CN2632368Y (en) * | 2003-07-10 | 2004-08-11 | 天津市天锻压力机有限公司 | Precision numerical control stretching hydropress shaping correcting controller |
| CN101307685A (en) * | 2008-07-09 | 2008-11-19 | 丁长良 | Long stroke hydraulic pumping unit |
| CN102235159A (en) * | 2010-04-28 | 2011-11-09 | 陈万仁 | Hydraulic energy-saving multi-well pumping unit |
| CN102363375A (en) * | 2011-06-30 | 2012-02-29 | 天津市天锻压力机有限公司 | Fast energy-saving single-action hydraulic machine |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106553370A (en) * | 2016-11-30 | 2017-04-05 | 合肥工业大学 | A kind of pair of performance element hydraulic press |
| CN107269600A (en) * | 2017-07-31 | 2017-10-20 | 中国重型机械研究院股份公司 | A kind of new fuel tank air inlet and outlet device and method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106321535A (en) | 2017-01-11 |
| CN104989686B (en) | 2017-01-11 |
| CN106321535B (en) | 2017-11-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202081450U (en) | Potential energy differential recovery system for moving arm of oil-liquid hybrid power excavator | |
| CN102587444B (en) | Oil hybrid system for excavator with energy differential recovery | |
| CN102094434B (en) | System for differential recovery of potential energy of boom of oil liquid hybrid power excavating machine | |
| CN103741755B (en) | A kind of excavator energy-recuperation system | |
| CN101704336B (en) | Energy-saving hydraulic hybrid power system of loader | |
| CN102182730A (en) | Movable arm flow re-generation system with potential energy recovery device for excavator | |
| CN107420384A (en) | Lifting device gravitional force P-V storage system | |
| CN104791307A (en) | Gear follow-up type two-cylinder four-stroke hydraulic free piston engine | |
| CN101435451A (en) | Movable arm potential energy recovery method and apparatus of hydraulic excavator | |
| CN104196785B (en) | A kind of closed type energy-saving type shield propulsion hydraulic system using multiplex pump to drive | |
| CN205136180U (en) | Hydraulic system of big indisputable fill compression dustbin compression material loading simultaneous working | |
| CN206159140U (en) | A hydraulic control system for wave energy power generation facility | |
| CN104988963A (en) | Hydraulic excavator movable arm potential energy recovery system | |
| CN102588396A (en) | Oil cylinder energy recovery and regeneration system | |
| CN104452868B (en) | Double-hydraulic-cylinder mixed drive control system | |
| CN108591144B (en) | Hydraulic system of motor-driven double-dosing pump double-accumulator distributed direct-drive excavator | |
| CN108679008A (en) | A kind of continuous output booster and control method of changeable pressure ratio | |
| CN104989686B (en) | Hydraulic unit achieving mutual potential energy utilization in pairing manner and driving method thereof | |
| CN109098943B (en) | Automatic hydraulic power generation deceleration strip device | |
| CN103397677B (en) | Based on hydraulic excavator movable arm loop and the control method thereof of hydraulic transformer | |
| CN105545844B (en) | A kind of energy-saving bulldozer working device hydraulic control system | |
| CN107700576A (en) | Hydraulic crawler excavator action potential recycling system | |
| CN107524187B (en) | Hydraulic-electric hybrid recycling system for braking energy of rotary motion | |
| CN204591821U (en) | A kind of gear follow-up-type two cylinder four-stroke hydraulic free-piston engine | |
| CN203384136U (en) | Speed exchange circuit with parallel speed control valves |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170111 Termination date: 20190708 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |