CN203715207U - Liquid control ratio speed control energy-conservation control system for hydraulic aerial cage - Google Patents
Liquid control ratio speed control energy-conservation control system for hydraulic aerial cage Download PDFInfo
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- CN203715207U CN203715207U CN201420026700.3U CN201420026700U CN203715207U CN 203715207 U CN203715207 U CN 203715207U CN 201420026700 U CN201420026700 U CN 201420026700U CN 203715207 U CN203715207 U CN 203715207U
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Abstract
The utility model relates to a liquid control ratio speed control energy-conservation control system for a hydraulic aerial cage and a control method of the liquid control ratio speed control energy-conservation control system. The hydraulic aerial cage comprises an automotive chassis, a rotation table, a boom, a work bucket, a rotation table operation box, a work bucket operation table and an execution element, the liquid control ratio speed control energy-conservation control system comprises a load-sensitive liquid control ratio multitandem valve, a pressure relay, a pilot control valve, a pilot oil supplying device, a hydraulic pump, an engine and an oil tank, the load-sensitive liquid control ratio multitandem valve and the pressure relay are installed in the rotation table operation box, the pilot control valve and the pilot oil supplying device are installed in the work bucket operation table, and the hydraulic pump, the oil tank and the engine are installed on the automotive chassis. The liquid control ratio speed control energy-conservation control system is reasonable in structural design, low in cost, convenient to install and maintain, capable of saving energy and reducing noises, applicable to both insulation and non-insulation hydraulic aerial cages, and flexible, handy, safe, reliable, and efficient in operation, and signals are not interfered and affected by high electric fields and high magnetic fields.
Description
Technical field
The utility model relates to a kind of hydraulic control proportionality velocity modulation energy-saving control system for aerial platform, is mainly used in insulated type or nonisulated type aerial platform, by hydraulic control, accurately controls the required flow of the different responsivenesses of each power element.
Background technology
During aerial platform operation, each actuating unit responsiveness is different, required flow is also different, it is steady, accurate, reliable, energy-conservation for each actuating unit is in operation, must carry out speed control and maximum flow restriction to each actuating unit, make responsiveness operation in controlled scope of each actuating unit.
On aerial platform, adopt at present two kinds of proportional speed regulation control systems:
1). the proportional speed regulation control system that pressure compensation type proportional flow control valve and multi-disc solenoid directional control valve form, control the responsiveness of each power element.Its defect is: can only set a maximum flow that power element responsiveness is required, the required flow of all the other each power element responsivenesses cannot be set, make each power element responsiveness be difficult to control, cannot realize composite move, also need to be equipped with electronic amplifier and potential device control handle.
2). adopt band pressure compensation proportional multi-path reversing valve to control each power element responsiveness.Every plate valve can arrange maximum flow by each power element responsiveness, can carry out self contained function or plural composite move.But this proportional speed regulation control system cost is high, configure PLVC programmable controller and potential device control handle, debugging and maintenance are inconvenient.
Above-mentioned two kinds of proportional speed regulation control systems, if use on insulated type hot line work aerial platform, must adopt optical cable transmission and opto-electronic conversion to carry out apportioning valve speed control, and cost is high, installation is difficult, maintenance and debugging is inconvenient; Signal is easily subject to the disturbing influence of high electric field, highfield, easily makes mistakes, and affects safety.
China Patent Publication No. 2652902, discloses a kind of hydraulic crane control system, for operating safely and reliably telescopic boom.Its defect is: accurate not in operating process, move steadily not, and can not control a plurality of power elements.
Utility model content
Technical problem to be solved in the utility model is to overcome existing above-mentioned deficiency in prior art, and design a kind of rational in infrastructure, simple to operate, cost is low, can accurately control the hydraulic control proportionality velocity modulation energy-saving control system for aerial platform of the required flow configuration of each power element responsiveness, it exports proportional hydraulic pressure signal by pilot-actuated valve, the displacement of the responsive hydraulic control proportional multi-way valve of control load spool, make it to match with engine speed, can accurately control the required flow of the different responsiveness of each power element.
The utility model solves the problems of the technologies described above adopted technical scheme: a kind of hydraulic control proportionality velocity modulation energy-saving control system for aerial platform, described aerial platform comprises car chassis, turntable, jib, working bucket, turntable control box, working bucket operator's station and power element, turntable is arranged on car chassis, the two ends of jib are connected with working bucket with turntable respectively, turntable control box is arranged on turntable, working bucket operator's station is arranged in working bucket, and power element is connected with jib with turntable control box respectively.
It is characterized in that: described hydraulic control proportionality velocity modulation energy-saving control system comprises load-sensitive hydraulic control proportional multi-way valve, pressure relay, pilot-actuated valve, guide's feed apparatus, Hydraulic Pump, driving engine and fuel tank, load-sensitive hydraulic control proportional multi-way valve and pressure relay are arranged in turntable control box, pilot-actuated valve and guide's feed apparatus are arranged in working bucket operator's station, and Hydraulic Pump, fuel tank and driving engine are arranged on car chassis; Fuel tank is provided with oil outlet and return opening, and oil outlet is connected with Hydraulic Pump, between oil outlet and Hydraulic Pump, is provided with oil filter.
Described load-sensitive hydraulic control proportional multi-way valve comprises at least 3 pilot operated valve device, and each pilot operated valve device is in parallel mutually, and each pilot operated valve device is connected with a power element respectively; The quantity of pressure relay, pilot-actuated valve is identical with pilot operated valve device, and each pilot operated valve device all configures a pressure relay and a pilot-actuated valve.
Described pilot-actuated valve is provided with control handle and two hydraulic control mouths, and the hydraulic pressure of hydraulic oil output is directly proportional to control handle angle of inclination.
On described pressure relay, be provided with shuttle valve, two hydraulic control mouths of pilot-actuated valve are connected with shuttle valve.
Described pilot operated valve device is provided with two hydraulic control mouths, is connected respectively with two hydraulic control mouths of pilot-actuated valve.
Described Hydraulic Pump is connected with guide's feed apparatus, and the return opening of fuel tank is connected with guide's feed apparatus; Guide's feed apparatus is connected with pilot-actuated valve, and pilot-actuated valve is connected with the return opening of fuel tank; Hydraulic Pump is connected with power element by load-sensitive hydraulic control proportional multi-way valve, and the return opening of fuel tank is connected with power element by load-sensitive hydraulic control proportional multi-way valve.
Between said structure, by pipeline, connect.
Described pressure relay is electrically connected to driving engine, and driving engine is connected with Hydraulic Pump.
Pilot-actuated valve is exported proportional hydraulic pressure signal, the displacement of the spool of hydraulic pressure signal control load-sensitive hydraulic control proportional multi-way valve, make the hydraulic pressure signal that hydraulic oil leads to the flow of each power element and pilot-actuated valve output be linear growth, and the hydraulic control mouth of every pilot operated valve device all can be by each power element responsiveness restriction maximum flow, the responsiveness of each power element is operated steadily, not affected by outer carrying, can carry out infinite speed variation, can self contained function and plural composite move.Simultaneously, the hydraulic pressure signal of pilot-actuated valve output acts on again on pressure relay, the electric signal control engine rotating speed that hydraulic energy is converted to electric energy, output is adjusted to the required maximum flow setting value of Hydraulic Pump supply power element automatically, when power element running velocity slows down, in system, unnecessary flow returns to fuel tank by the three-way flow regulating valve in load-sensitive hydraulic control proportional multi-way valve, reaches energy-conservation, noise reduction, proportionality velocity modulation Energy Saving Control effect efficiently.
Guide's feed apparatus described in the utility model comprises reducing valve, check valve and the energy storage connecting successively, and reducing valve is connected with Hydraulic Pump, and energy storage is connected with pilot-actuated valve; Between described reducing valve and check valve, be also provided with safety valve, safety valve is connected with the return opening of fuel tank.Working connection, through reducing valve decompression and energy storage storage, provides a certain amount of voltage stabilizing oil sources for pilot-actuated valve; Check valve is the anti-pressure that runs off of hydraulic oil preventing in energy storage, and safety valve is to carry out pressure off-load in the out-of-action situation of reducing valve, guarantees that the pressure that offers pilot-actuated valve is no more than setting value.
On load-sensitive hydraulic control proportional multi-way valve described in the utility model, be provided with a three-way flow regulating valve, three-way flow regulating valve is connected with the return opening of Hydraulic Pump and fuel tank respectively.Three-way flow regulating valve returns to unnecessary flow in system to fuel tank.
Pilot operated valve device described in the utility model is provided with inlet and liquid outlet, and inlet is connected with the return opening of Hydraulic Pump and fuel tank respectively with liquid outlet; On described inlet, be provided with a two-pass flow control valve, between two-pass flow control valve and power element, be provided with signal path No. one, between three-way flow regulating valve and power element, be provided with signal path No. two, on No. two signal paths, be provided with shuttle valve.Two-pass flow control valve is constantly adjusted the annular gap that rises of spool according to LS signal, so that the pressure reduction between the required pressure of corrective system pressure and power element, guarantee that the responsiveness of power element operates steadily, accurately, is not subject to outer impact of carrying; A signal path and No. two signal paths are for feeding back the feedback load pressure LS signal of power element hydraulic oil generation.
The utility model compared with prior art, has following positive effect: reasonable in design, and cost is low, and installation and maintenance are convenient; Energy-conservation, noise reduction can be applied on insulated type and nonisulated type aerial platform, and signal is not subject to the interference of high electric field, highfield and affects, flexible operation, light, safe, reliable, efficient.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the structural representation of the utility model high and medium Operation Van.
The specific embodiment
Below in conjunction with accompanying drawing and by embodiment, the utility model is described in further detail.
Embodiment:
Referring to Fig. 1～Fig. 2, in the present embodiment, aerial platform comprises car chassis 51, turntable 52, jib 53, working bucket 54, turntable control box 55, working bucket operator's station 56 and power element 8, turntable 52 is arranged on car chassis, the two ends of jib 53 are connected with working bucket 54 with turntable 52 respectively, turntable control box 55 is arranged on turntable 52, and working bucket operator's station 56 is arranged in working bucket 54, and power element 8 is connected with jib 53 with turntable control box 55 respectively.
Described hydraulic control proportionality velocity modulation energy-saving control system comprise load-sensitive hydraulic control proportional multi-way valve 1, pressure relay 2, pilot-actuated valve 3, guide's feed apparatus 4, Hydraulic Pump 5, driving engine 6 and fuel tank 7, load-sensitive hydraulic control proportional multi-way valve 1 and pressure relay 2 are arranged in turntable control box 55, pilot-actuated valve 3 and guide's feed apparatus 4 are arranged in working bucket operator's station 56, and Hydraulic Pump 5, fuel tank 7 and driving engine 6 are arranged on car chassis 51; Fuel tank 7 is provided with oil outlet 71 and return opening 72, and oil outlet 71 is connected with Hydraulic Pump 5, between oil outlet 71 and Hydraulic Pump 5, is provided with oil filter 73.
Described load-sensitive hydraulic control proportional multi-way valve 1 comprises 4 pilot operated valve device 11, and each pilot operated valve device 11 is in parallel mutually, and each pilot operated valve device 11 is connected with a power element 8 respectively; The quantity of pressure relay 2, pilot-actuated valve 3 is identical with pilot operated valve device 11, and each pilot operated valve device 11 all configures a pressure relay 2 and a pilot-actuated valve 3.
Described pilot-actuated valve 3 is provided with control handle 31 and two hydraulic control mouths, hydraulic control mouth a
1, hydraulic control mouth b
1, the hydraulic pressure of hydraulic oil output is directly proportional to the angle of inclination of control handle 31.
On described pressure relay 2, be provided with shuttle valve 21, two hydraulic control mouths of pilot-actuated valve 3 are connected with shuttle valve 21.
Described pilot operated valve device 11 is provided with two hydraulic control mouths, hydraulic control mouth a
2, hydraulic control mouth b
2, hydraulic control mouth a
2with hydraulic control mouth a
1connect hydraulic control mouth b
2with hydraulic control mouth b
1connect.
Described Hydraulic Pump 5 is connected with guide's feed apparatus 4, and the return opening 72 of fuel tank 7 is connected with guide's feed apparatus 4; Guide's feed apparatus 4 is connected with pilot-actuated valve 3, and pilot-actuated valve 3 is connected with the return opening 72 of fuel tank 7; Hydraulic Pump 5 is connected with power element 8 by load-sensitive hydraulic control proportional multi-way valve 1, and the return opening 72 of fuel tank 7 is connected with power element 8 by carrying responsive hydraulic control proportional multi-way valve 1.
Between said structure, by pipeline 9, connect.
Described pressure relay 2 is electrically connected to driving engine 6, and driving engine 6 is connected with Hydraulic Pump 5.
The proportional hydraulic pressure signal of pilot-actuated valve 3 output, the displacement of the spool of hydraulic pressure signal control load-sensitive hydraulic control proportional multi-way valve 1, make the hydraulic pressure signal that hydraulic oil leads to the flow of each power element 8 and pilot-actuated valve 3 outputs be linear growth, and the hydraulic control mouth of every pilot operated valve device 11 all can be by each power element 8 responsiveness restriction maximum flows, the responsiveness of each power element 8 is operated steadily, not affected by outer carrying, can carry out infinite speed variation, can self contained function and plural composite move.Simultaneously, the hydraulic pressure signal of pilot-actuated valve 3 outputs acts on again on pressure relay 2, electric signal control engine 6 rotating speeds that hydraulic energy are converted to electric energy, output are adjusted to the required maximum flow setting value of Hydraulic Pump 5 supply power element 8 automatically, when power element 8 running velocitys slow down, in system, unnecessary flow returns to fuel tank 7 by the three-way flow regulating valve in load-sensitive hydraulic control proportional multi-way valve 1, reaches energy-conservation, noise reduction, proportionality velocity modulation Energy Saving Control effect efficiently.
In the present embodiment, guide's feed apparatus 4 comprises reducing valve 41, check valve 42 and the energy storage 43 connecting successively, and reducing valve 41 is connected with Hydraulic Pump 5, and energy storage 43 is connected with pilot-actuated valve 3; Between described reducing valve 41 and check valve 42, be also provided with safety valve 44, safety valve 44 is connected with the return opening 72 of fuel tank 7.Working connection, through reducing valve 41 decompressions and energy storage 43 storages, provides a certain amount of voltage stabilizing oil sources for pilot-actuated valve 3; Check valve 42 is the anti-pressures that run off of hydraulic oil that prevent in energy storage 43, and safety valve 44 is to carry out pressure off-load in the out-of-action situation of reducing valve 41, guarantees that the pressure that offers pilot-actuated valve 3 is no more than setting value.
In the present embodiment, be provided with a three-way flow regulating valve 12 on load-sensitive hydraulic control proportional multi-way valve 1, three-way flow regulating valve 12 is connected with the return opening 72 of Hydraulic Pump 5 and fuel tank 7 respectively.Three-way flow regulating valve 12 returns to unnecessary flow in system to fuel tank 7.
In the present embodiment, pilot operated valve device 11 is provided with inlet 13 and liquid outlet 14, and inlet 13 is connected with the return opening 72 of Hydraulic Pump 5 and fuel tank 7 respectively with liquid outlet 14; On described inlet 13, be provided with a two-pass flow control valve 15, between two-pass flow control valve 15 and power element 8, be provided with No. one signal path 16, between three-way flow regulating valve 12 and power element 8, be provided with on 17, No. two signal paths 17 of No. two signal paths and be provided with shuttle valve 21.Two-pass flow control valve 15 is constantly adjusted the annular gap that rises of spool according to the LS signal of signal path 16 supplies, so that the pressure reduction between corrective system pressure and the required pressure of power element 8, the difference that guarantees two-pass flow control valve 15 delivery pressures and LS signal is constant, the responsiveness of guaranteeing power element 8 operates steadily, accurately, be not subject to outer impact of carrying; A signal path 16 and No. two signal paths 17 are for feeding back the feedback load pressure LS signal of power element 8 hydraulic oil generations.
In the present embodiment, the control method of hydraulic control proportionality velocity modulation energy-saving control system is as follows:
(1) from the working connection of Hydraulic Pump 5 outputs, enter guide's feed apparatus 4, through reducing valve 41 decompressions and energy storage 43 storages, provide a certain amount of voltage stabilizing oil sources for pilot-actuated valve 3.
(2) handle control handle 31 deflection angles in pilot-actuated valve 3, send hydraulic pressure signal proportional to angle, this hydraulic pressure signal acts in pressure relay 2 and pilot operated valve device 11 simultaneously.
Hydraulic pressure signal is applied on corresponding pressure relay 2 through shuttle valve 21, when hydraulic pressure signal reaches the force value of pressure relay 2 settings, pressure relay 2 is connected, hydraulic pressure signal is converted to electric signal output, driving engine 6 receives electric signal, and control engine 6 throttles make the rotating speed of driving engine 6 reach Hydraulic Pump 5 and supply with a maximum flow setting value that power element 8 is required;
Hydraulic pressure signal function, in pilot operated valve device 11, makes the spool displacement of pilot operated valve device 11, and displacement is directly proportional to the hydraulic pressure signal of pilot-actuated valve 3 outputs, thereby pilot operated valve device 11 is opened, and Hydraulic Pump 5 is communicated with power element 8.
(3) hydraulic oil, from Hydraulic Pump 5 through two-pass flow control valve 15, enters into power element 8 by pilot operated valve device 11.
(4) hydraulic oil in power element 8 produces feedback load pressure LS signal, and LS signal acts on two-pass flow control valve 15 and shuttle valve 21 through a signal path 16 and No. two signal paths 17 respectively;
Two-pass flow control valve 15 is constantly adjusted the annular gap that rises of pilot operated valve device 11 spools according to LS signal, so that the pressure reduction between corrective system pressure and the required pressure of power element 8, the difference that guarantees two-pass flow control valve 15 delivery pressures and LS signal keeps constant, pilot operated valve device 11 outputs are directly proportional to spool displacement opening amount area, play the effect of regime flow;
Shuttle valve 21 on No. two signal paths 17 is sent into three-way flow regulating valve 12 after LS signal is converged, and oil mass unnecessary in system is returned to the return opening 72 of fuel tank 7 by three-way flow regulating valve 12.
(5), when pilot-actuated valve 3 control handles 31 are got back to meta, the pressure oil acting on pressure relay 2 assemblies and pilot operated valve device 11 hydraulic control mouths passes through pilot-actuated valve 3 off-loads, from return opening 72, returns to fuel tank 7; Now pilot operated valve device 11 spools are got back to meta, and delivery rate is zero, and hydraulic oil cannot arrive power element 8, and power element 8 is failure to actuate; Simultaneously, when hydraulic pressure signal is less than the force value of pressure relay 2 settings, pressure relay 2 disconnects, do not produce electric signal, the control signal of driving engine 6 throttles interrupts, driving engine 6 is in idle state, and Hydraulic Pump 5 reduces delivery quality, and the hydraulic oil in system directly returns to the return opening 72 of fuel tank 7 by three-way flow regulating valve 12.
In above-mentioned (2) step, if the control handle 31 of a pilot-actuated valve 3 of operation only has 8 actions of a power element; If operate the control handle 31 of two or more pilot-actuated valves 3, a plurality of power elements 8 move simultaneously, its principle is identical with single control handle 31, each hydraulic pressure signal that each pilot-actuated valve 3 sends acts on respectively pressure relay 2 and the pilot operated valve device 11 of answering in contrast, pressure relay 2 is converted to electric signal output by hydraulic pressure signal, and control engine 6 throttles make the rotating speed of driving engine 6 reach Hydraulic Pump 5 and supply with the required maximum flow setting value of a plurality of power elements 8.The peak flow values required due to each power element 8 is different, and the rotating speed of driving engine 6 can only be got maxim output wherein.Simultaneously, each hydraulic pressure signal acts on again on each pilot operated valve device 11 hydraulic control mouth, each pilot operated valve device 11 according to pilot-actuated valve 3 separately control handle 31 deflection angles export different hydraulic pressure signals, obtain different delivery rates, control power element separately, 8 smooth runnings, non-interference, in system, unnecessary flow returns to fuel tank 7 from three-way flow regulating valve 12.
In addition, it should be noted that, the specific embodiment described in this specification sheets, as long as the undeclared concrete shape of its part and size, this part can be any shape and size that adapt with its structure; Meanwhile, the title that part is got also can be different.All equivalence or simple change of doing according to described structure, feature and the principle of the utility model patent design, are included in the protection domain of the utility model patent.
Claims (4)
1. the hydraulic control proportionality velocity modulation energy-saving control system for aerial platform, described aerial platform comprises car chassis, turntable, jib, working bucket, turntable control box, working bucket operator's station and power element, turntable is arranged on car chassis, the two ends of jib are connected with working bucket with turntable respectively, turntable control box is arranged on turntable, working bucket operator's station is arranged in working bucket, and power element is connected with jib with turntable control box respectively;
It is characterized in that: described hydraulic control proportionality velocity modulation energy-saving control system comprises load-sensitive hydraulic control proportional multi-way valve, pressure relay, pilot-actuated valve, guide's feed apparatus, Hydraulic Pump, driving engine and fuel tank, load-sensitive hydraulic control proportional multi-way valve and pressure relay are arranged in turntable control box, pilot-actuated valve and guide's feed apparatus are arranged in working bucket operator's station, and Hydraulic Pump, fuel tank and driving engine are arranged on car chassis; Fuel tank is provided with oil outlet and return opening, and oil outlet is connected with Hydraulic Pump, between oil outlet and Hydraulic Pump, is provided with oil filter;
Described load-sensitive hydraulic control proportional multi-way valve comprises at least 3 pilot operated valve device, and each pilot operated valve device is in parallel mutually, and each pilot operated valve device is connected with a power element respectively; The quantity of pressure relay, pilot-actuated valve is identical with pilot operated valve device, and each pilot operated valve device all configures a pressure relay and a pilot-actuated valve;
Described pilot-actuated valve is provided with control handle and two hydraulic control mouths;
On described pressure relay, be provided with shuttle valve, two hydraulic control mouths of pilot-actuated valve are connected with shuttle valve;
Described pilot operated valve device is provided with two hydraulic control mouths, is connected respectively with two hydraulic control mouths of pilot-actuated valve;
Described Hydraulic Pump is connected with guide's feed apparatus, and the return opening of fuel tank is connected with guide's feed apparatus; Guide's feed apparatus is connected with pilot-actuated valve, and pilot-actuated valve is connected with the return opening of fuel tank; Hydraulic Pump is connected with power element by load-sensitive hydraulic control proportional multi-way valve, and the return opening of fuel tank is connected with power element by load-sensitive hydraulic control proportional multi-way valve;
Between said structure, by pipeline, connect;
Described pressure relay is electrically connected to driving engine, and driving engine is connected with Hydraulic Pump.
2. the hydraulic control proportionality velocity modulation energy-saving control system for aerial platform according to claim 1, it is characterized in that: described guide's feed apparatus comprises reducing valve, check valve and the energy storage connecting successively, reducing valve is connected with Hydraulic Pump, and energy storage is connected with pilot-actuated valve; Between described reducing valve and check valve, be also provided with safety valve, safety valve is connected with the return opening of fuel tank.
3. the hydraulic control proportionality velocity modulation energy-saving control system for aerial platform according to claim 1 and 2, it is characterized in that: on described load-sensitive hydraulic control proportional multi-way valve, be provided with a three-way flow regulating valve, three-way flow regulating valve is connected with the return opening of Hydraulic Pump and fuel tank respectively.
4. the hydraulic control proportionality velocity modulation energy-saving control system for aerial platform according to claim 3, is characterized in that: described pilot operated valve device is provided with inlet and liquid outlet, and inlet is connected with the return opening of Hydraulic Pump and fuel tank respectively with liquid outlet; On described inlet, be provided with a two-pass flow control valve, between two-pass flow control valve and power element, be provided with signal path No. one, between three-way flow regulating valve and power element, be provided with signal path No. two, on No. two signal paths, be provided with shuttle valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420026700.3U CN203715207U (en) | 2014-01-16 | 2014-01-16 | Liquid control ratio speed control energy-conservation control system for hydraulic aerial cage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420026700.3U CN203715207U (en) | 2014-01-16 | 2014-01-16 | Liquid control ratio speed control energy-conservation control system for hydraulic aerial cage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203715207U true CN203715207U (en) | 2014-07-16 |
Family
ID=51154375
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420026700.3U Withdrawn - After Issue CN203715207U (en) | 2014-01-16 | 2014-01-16 | Liquid control ratio speed control energy-conservation control system for hydraulic aerial cage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203715207U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103771305A (en) * | 2014-01-16 | 2014-05-07 | 杭州爱知工程车辆有限公司 | Hydraulically-controlled proportional speed-adjusting energy-saving control system for overhead working automobile and control method thereof |
| CN111943095A (en) * | 2020-07-10 | 2020-11-17 | 湖南星邦智能装备股份有限公司 | Method for controlling stability of boom of aerial work platform |
-
2014
- 2014-01-16 CN CN201420026700.3U patent/CN203715207U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103771305A (en) * | 2014-01-16 | 2014-05-07 | 杭州爱知工程车辆有限公司 | Hydraulically-controlled proportional speed-adjusting energy-saving control system for overhead working automobile and control method thereof |
| CN103771305B (en) * | 2014-01-16 | 2016-04-20 | 杭州爱知工程车辆有限公司 | A kind of hydraulic control proportionality velocity modulation energy-saving control system for aerial platform and control method thereof |
| CN111943095A (en) * | 2020-07-10 | 2020-11-17 | 湖南星邦智能装备股份有限公司 | Method for controlling stability of boom of aerial work platform |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140716 Effective date of abandoning: 20160420 |
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| C25 | Abandonment of patent right or utility model to avoid double patenting |