CN104563719B - Automatic unloading type lifting glass for vehicle window system - Google Patents
Automatic unloading type lifting glass for vehicle window system Download PDFInfo
- Publication number
- CN104563719B CN104563719B CN201410681976.XA CN201410681976A CN104563719B CN 104563719 B CN104563719 B CN 104563719B CN 201410681976 A CN201410681976 A CN 201410681976A CN 104563719 B CN104563719 B CN 104563719B
- Authority
- CN
- China
- Prior art keywords
- lifting
- vehicle window
- branch road
- glass
- loop
- 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.)
- Active
Links
Landscapes
- Power-Operated Mechanisms For Wings (AREA)
- Window Of Vehicle (AREA)
Abstract
Automatic unloading type lifting glass for vehicle window system, comprises lifting system and pressure relief system; Lifting branch road is all connected with fluid branch road, to form the lifting loop of fluid circulation; Lifting loop by the oil stream in the magnetic valve switching pipeline of three position four-way electromagnetic valve and bi-bit bi-pass to, form and rise loop or fall loop; When lifting switch described in each is triggered, the lifting loop answered with this lifting Switch Controller is started working; Magnetic valve, the lifting switch of motor, three position four-way electromagnetic valve, bi-bit bi-pass are all connected with central controller; Pressure relief system comprises the first pressure release branch road and the 2nd pressure release branch road; First pressure release branch road is connected with check valve, safety valve, pressure release fuel tank with after lifting system communication successively at the inlet duct place in the lower chamber of hydro-cylinder; 2nd pressure release branch road is connected with safety valve, described pressure release fuel tank with after lifting system communication successively at the inlet duct place in the upper chamber of hydro-cylinder.
Description
Technical field
The present invention relates to a kind of unloading type lifting glass for vehicle window system automatically.
Background technology
Along with the development of Hyundai Motor, before old shaking vehicle window almost no longer occurs, power windows has become the standard configuration of vehicle, in current car, glass riser utilizes driven by motor mechanism, or utilize steel wire to pull slide block to drive glass lifting, or utilize intersection arm slip elevating glass etc., mainly have the following disadvantages:
1, some vehicle window pane prepared has automatic pinch resistant functionality, but the anti-grip force of each factory settings does not form unified standard, and vehicle anti-pinch force rate is bigger, when children or old man are pressed from both sides, still can be crushed, due to relatively big by grip force, even caused more serious consequence;
2, at present power truck each vehicle window of window glass up-down system is equipped with a motor, motor require can bidirectional movement, each vehicle window is equipped with a set of riser, and mechanism's component are more, it is easy to fault occurs;
Even if 3, some vehicle has the automatic pinch resistant functionality of vehicle window, automobile production producer considers the situation of the aspect such as cost and layout, also it is that indivedual vehicle window possesses this function, major part vehicle is not all equipped with 4 automatic pinch resistant functionality of vehicle window, so the vehicle window not being equipped with automatic pinch resistant functionality easily causes the injury of personnel inside and outside car;
4, for the vehicle not having pinch resistant functionality, in glass uphill process, no matter it is mishandle, or when glass rises, inside and outside car, personnel's limbs have little time to withdraw, once victim is by pressing from both sides, it is very difficult to get rid of poverty, if victim does not stop rocking in a hurry, want to depart from the situation pressed from both sides, often cause bigger injury, if children are pressed from both sides, adult does not have again Timeliness coverage, and the injury caused can be bigger;
5, adopting hydraulic efficiency system, hydraulic efficiency system is also relatively complicated, and cost is higher.
Due to the development of Hyundai Motor, old shaking window lifting system has exited the arena of history gradually, and new power truck window glass up-down system has become the standard configuration of vehicle, and the lifting glass for vehicle window system on market exists above not enough urgently to be resolved hurrily.
Summary of the invention
For solving the problem, the present invention proposes a kind of unloading type lifting glass for vehicle window system automatically.
The technical solution used in the present invention is:
Automatic unloading type lifting glass for vehicle window system, comprises the lifting system and pressure relief system thereof that drive glass for vehicle window to rise or decline;
Described lifting system comprises the multiple lifting branch road and the fluid branch road that utilize hydro-cylinder correspondence to drive every block lifting glass for vehicle window, and multiple described lifting branch road is all connected with fluid branch road, to form the lifting loop of fluid circulation;
Described lifting branch road comprises the magnetic valve of the bi-bit bi-pass connected successively, the lower chamber of described hydro-cylinder, the upper chamber of described hydro-cylinder,
Described fluid branch road comprises the fuel feeding fuel tank connected successively, motor-driven oil pump, three position four-way electromagnetic valve;
The magnetic valve of described bi-bit bi-pass and the upper chamber of described hydro-cylinder are connected with three position four-way electromagnetic valve respectively;
Described lifting loop by the oil stream in the magnetic valve switching pipeline of described three position four-way electromagnetic valve and bi-bit bi-pass to, with form drive that glass for vehicle window rises rise loop or glass decline loop falls;
Lifting loop correspondence described in each is provided with multiple lifting switch, and when the lifting switch described in each is triggered, the lifting loop answered with this lifting Switch Controller is started working, and rises or decline to control corresponding glass for vehicle window;
Magnetic valve, the described lifting switch of described motor, described three position four-way electromagnetic valve, described bi-bit bi-pass are all connected with central controller;
Lifting loop described in each is equipped with the described pressure relief system being connected, and described pressure relief system comprises the first pressure release branch road and the 2nd pressure release branch road that reclaim respectively and rise loop with fall loop fluid;
Described first pressure release branch road is connected with check valve, safety valve, pressure release fuel tank with after described lifting system communication successively at the inlet duct place in the lower chamber of described hydro-cylinder;
Described 2nd pressure release branch road is connected with safety valve, described pressure release fuel tank with after described lifting system communication successively at the inlet duct place in the upper chamber of described hydro-cylinder.
Further, strainer also it is connected with between described fuel feeding fuel tank and oil pump.
Further, described three position four-way electromagnetic valve is also connected with oil return fuel tank.
Further, also comprising the key lifting switch being connected with described central controller, a described key lifting switch is connected respectively with described multiple lifting switch, when a described key lifting switch is triggered, and more than one lifting system starts.
The invention has the beneficial effects as follows:
Even if 1 system and device loses power, as long as pressing glass for vehicle window downwards, glass will be forced to decline, and helping to be got rid of poverty by folder personnel;
2, when vehicle window upwards rises, and when personnel cannot extract out in time by folder limbs inside and outside car, as long as pressing glass for vehicle window downwards, glass all can be forced to decline, effectively avoiding personnel to be pressed from both sides;
3, the anti-grip force that Operation system setting is suitable, the situation that there will not be anti-grip force excessive, even if personnel are pressed from both sides, when arriving the safe pressure arranged when system, system, also by releasing pressure automatically, effectively avoids causing serious crushing;
4, guarantee that all vehicle windows of vehicle possess releasing pressure automatically function, the injury greatly reducing glass for vehicle window clamping victim and cause;
5, guarantee that the product that supplier provides has identical anti-grip force, form unified standard, be convenient for changing;
6, security of system valve setting pressure can be adjusted by professional according to customer need, and easy to adjust, meets different demand;
7, system and device is arranged convenient;
8, elevating glass is more mild, reduces noise.
Accompanying drawing explanation
The system diagram of Fig. 1 the present invention.
Wherein, when the left front glass for vehicle window of Fig. 2 rises, oil circuit flows to schematic diagram (direction of arrow represents the oil circuit flow direction).
Wherein, when the left front glass for vehicle window of Fig. 3 declines, oil circuit flows to schematic diagram (direction of arrow represents the oil circuit flow direction).
The logic relation table of Fig. 4 magnetic valve, motor, lifting switch.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described further:
With reference to accompanying drawing, automatic unloading type lifting glass for vehicle window system, comprise the lifting system and pressure relief system thereof that drive glass for vehicle window 9,13,17,21 to rise or decline;
Described lifting system comprises the multiple lifting branch road and the fluid branch road that utilize hydro-cylinder 8,12,16,20 correspondence to drive every block lifting glass for vehicle window, and multiple described lifting branch road is all connected with fluid branch road, to form the lifting loop of fluid circulation;
Described lifting branch road comprise the bi-bit bi-pass connected successively magnetic valve 7,11,15,19, the lower chamber of described hydro-cylinder, the upper chamber of described hydro-cylinder,
Described fluid branch road comprise connect successively fuel feeding fuel tank 1, motor 4 drive oil pump 3, three position four-way electromagnetic valve 6;
The magnetic valve 7,11,15,19 of described bi-bit bi-pass is connected with three position four-way electromagnetic valve 6 respectively with the upper chamber of described hydro-cylinder;
Described lifting loop by the magnetic valve 7,11,15,19 of described three position four-way electromagnetic valve 6 and bi-bit bi-pass switch the oil stream in pipeline to, with form drive that glass for vehicle window 9,13,17,21 rises rise loop or glass decline loop falls;
Lifting loop correspondence described in each is provided with multiple lifting switch, and when the lifting switch described in each is triggered, the lifting loop answered with this lifting Switch Controller is started working, and rises or decline to control corresponding glass for vehicle window 9,13,17,21;
The magnetic valve 7 of described motor 4, described three position four-way electromagnetic valve 6, described bi-bit bi-pass, 11,15,19, described lifting switch is all connected with central controller;
Lifting loop described in each is equipped with the described pressure relief system being connected, and described pressure relief system comprises the first pressure release branch road and the 2nd pressure release branch road that reclaim respectively and rise loop with fall loop fluid;
Described first pressure release branch road is connected with check valve 10,14,18,22, first safety valve 23, pressure release fuel tank 24 with after described lifting system communication successively at the inlet duct place in the lower chamber of described hydro-cylinder 8,12,16,20;
Described 2nd pressure release branch road is connected with the 2nd safety valve 25, described pressure release fuel tank 24 with after described lifting system communication successively at the inlet duct place in the upper chamber of described hydro-cylinder.
Further, strainer 2 also it is connected with between described fuel feeding fuel tank 1 and oil pump 3.
Further, described three position four-way electromagnetic valve 6 is also connected with oil return fuel tank 5.
Further, also comprising the key lifting switch being connected with described central controller, a described key lifting switch is connected respectively with described multiple lifting switch, when a described key lifting switch is triggered, and more than one lifting system starts.
For the car of common four windows, principle of work is as follows:
1, when operator is without any operation, motor 4 is not charged, oil pump 3 does not work, the magnetic valve 7,11,15,19 of three position four-way electromagnetic valve 6 and bi-bit bi-pass is not charged remains on middle position, set the force value (can adjust as required) of the first suitable safety valve 23, the 2nd safety valve 25 by professional person, as shown in Figure 1;
2, it is described for the lifting of left front glass, when needs rise left front glass for vehicle window 9, officer lifts left front glass lifting button, motor 4 is energized, motor 4 drives oil pump 3 to operate, fluid enters oil pump 3 through filter 2, now, it is energized on the right side of three position four-way electromagnetic valve 6, three position four-way electromagnetic valve 6 moves into right position, fluid enters through three position four-way electromagnetic valve 6 right oil circuits, now, two-position two-way solenoid valve 7 is energized, two-position two-way solenoid valve 7 moves into left position, fluid enters hydro-cylinder 8 times chambeies through magnetic valve 7, promote and the piston of hydro-cylinder 8 moves, the left front glass for vehicle window 9 of piston driving rises, on hydro-cylinder 8, chamber fluid flows back to oil return fuel tank 5 through the right position of three position four-way electromagnetic valve 6, another road is connected the first safety valve 23 through check valve 10, all the other oil circuits are obstructed, as shown in Figure 2,
When user needs to fall glass, officer presses left front window lifting switch, motor 4 is energized, motor 4 drives oil pump 3 to operate, fluid enters oil pump 3 through filter 2, now, it is energized on the left of three position four-way electromagnetic valve 6, three position four-way electromagnetic valve 6 moves into left position, one road fluid is connected with safety valve 25, another road fluid enters chamber on hydro-cylinder 8 through three position four-way electromagnetic valve 6 left oil circuits, now, two-position two-way solenoid valve 7 is energized, two-position two-way solenoid valve 7 moves into left position, fluid flows out through magnetic valve 7, then oil return fuel tank 5 is flowed back to through the left position of three position four-way electromagnetic valve 6, all the other oil circuits are obstructed, as shown in Figure 3.
After left front glass for vehicle window is closed, if operator continues to lift left front lifting glass for vehicle window switch, system pressure rises, and the first safety valve 23 opens pressure release, and glass for vehicle window remains on make-position.
Other glass for vehicle window operating process is with left front glass descending operation method.
3, for left front glass for vehicle window 9, lift left front window lifting switch, left front glass for vehicle window 9 rises, run into obstacle when left front glass for vehicle window 9 rises, such as personnel's limbs or have other object hinder vehicle window close time, system oil pressure rise, when obstruction causes rising to the first safety valve 23 setup pressure value on system pressure, first safety valve 23 opens pressure release, and fluid flows back to pressure release fuel tank 24 through the first safety valve 23, it is ensured that glass no longer rises;
Press left front window lifting switch, left front glass for vehicle window 9 declines, obstruction is run into when left front glass for vehicle window 9 declines, system oil pressure rises, when obstruction causes rising to the 2nd safety valve 25 setup pressure value on system pressure, the 2nd safety valve 25 opens pressure release, and fluid flows back to pressure release fuel tank 24 through the 2nd safety valve 25, guarantee that left front glass for vehicle window 9 no longer declines, available protecting system component;
4, for left front glass for vehicle window 9, lift lifting switch (comprising a key lifting switch), if personnel feel that vehicle window rises inside and outside car, when having no idea to extract out in time by folder limbs, it is possible to press left front glass for vehicle window 9 immediately downwards, then system oil pressure rises, when system pressure reaches the first safety valve 23 set(ting)value, safety valve opens pressure release, and fluid flows back to fuel tank 24 through the first safety valve 23, and glass declines;
5, for left front glass for vehicle window 9, due to mishandle, inside and outside car, personnel are pressed from both sides, if now each magnetic valve power-off or motor 4 stop work, even if pressing window lifting switch (comprising a key lifting switch), left front glass for vehicle window 9 still can not fall, as long as now being pressed left front glass for vehicle window 9 downwards with strength by folder personnel, system pressure will rise, when system pressure reaches the force value of the first safety valve 23 setting, first safety valve 23 opens pressure release, fluid from hydro-cylinder 8 chambeies through check valve 10, pressure release fuel tank 24 is flowed into by the first safety valve 23, left front glass for vehicle window 9 declines.
6, lift a key lifting switch, central controller connects three position four-way electromagnetic valve 6 and 4 two-position two-way solenoid valves 7, 11, 15, coil on the right side of in the of 19, three position four-way electromagnetic valve 6 moves into right position, 4 two-position two-way solenoid valves 7, 11, 15, the 19 left positions of immigration, fluid is through filter 2, oil pump 3, the right position of three position four-way electromagnetic valve 6, 4 two-position two-way solenoid valves 7, 11, 15, behind 19 left positions, wherein a road enters 4 hydro-cylinders 8, 12, 16, 20 times chambeies, promote and 4 pistons move, close 4 glasss for vehicle window 9, 13, 17, 21, another road is by 4 check valves 10, 14, 18, 22 connection the first safety valve 23, realize a key and rise function,
When by next key lifting switch, coil and 4 two-position two-way solenoid valves 7 on the left of three position four-way electromagnetic valve 6 connected by central controller, 11, 15, coil on the right side of in the of 19, three position four-way electromagnetic valve 6 moves into left position, 4 two-position two-way solenoid valves 7, 11, 15, the 19 left positions of immigration, fluid is through filter 2, oil pump 3, the left position of three position four-way electromagnetic valve 6, 4 two-position two-way solenoid valves 7, 11, 15, behind 19 left positions, wherein a road enters 4 hydro-cylinders 8, 12, 16, chamber on 20, move under promoting 4 pistons, fall 4 glasss for vehicle window 9, 13, 17, 21, another road is connected the 2nd safety valve 25, realize a key decline function.
7, lift a key lifting switch, central controller connects three position four-way electromagnetic valve 6 and 4 two-position two-way solenoid valves 7, 11, 15, coil on the right side of in the of 19, three position four-way electromagnetic valve 6 moves into right position, 4 two-position two-way solenoid valves 7, 11, 15, the 19 left positions of immigration, assume that wherein a certain or several vehicle windows are closed in advance or close, as only left front glass for vehicle window 9 is not closed, fluid is through fuel tank 1, strainer 2, oil pump 3, the right position of three position four-way electromagnetic valve 6, the left front left position of vehicle window two-position two-way solenoid valve 7 enters hydro-cylinder 8 times chambeies of left front vehicle window, continue to promote glass for vehicle window 9 to rise, until this glass for vehicle window is closed, when all glasss for vehicle window are closed, when still lifting a key lifting switch, system oil pressure rises, when oil pressure rises to the first safety valve 23 setting pressure, first safety valve 23 opens pressure release, all glasss for vehicle window complete a key closing function.
8, lift a key lifting switch, four glasss for vehicle window rise, when a certain or several vehicle windows rise run into obstacle (such as personnel's limbs or have other object to hinder vehicle window to close) time, assume that only left front glass for vehicle window 9 has personnel's limbs or other object to hinder vehicle window to rise (or folder), other vehicle window is not influenced, and fluid is through fuel tank 1, strainer 2, oil pump 3, the right position of three position four-way electromagnetic valve 6, other vehicle window two-position two-way solenoid valve 11, 15, 19 left positions enter the hydro-cylinder 12 of corresponding vehicle window, 16, 20 times chambeies, continue to promote corresponding piston to rise, until unaffected vehicle window 13, 17, after 21 closedowns, corresponding hydro-cylinder 12, 16, the lower cavity pressure of 20 rises, system pressure continues to promote left front glass for vehicle window 9, owing to affected left front glass for vehicle window 9 has object to hinder, left front glass for vehicle window 9 cannot rise, whole system pressure is forced to rise, when system oil pressure rises to the first safety valve 23 setting pressure, first safety valve 23 opens pressure release, all glasss for vehicle window remain on works as upper/lower positions, under corresponding hydro-cylinder, chamber only maintains glass for vehicle window maintain static by power, now only needs to press down left front glass for vehicle window 9, and left front glass for vehicle window 9 declines, can extract out by folder personnel or object, it is ensured that the degree injured by folder person or object is minimum.
Content described in this specification sheets embodiment is only enumerating of the way of realization to invention design; protection scope of the present invention should not be regarded as being only limitted to the specific form that embodiment is stated, protection scope of the present invention also comprises the equivalent technologies means that those skilled in the art can expect according to present inventive concept.
Claims (4)
1. automatic unloading type lifting glass for vehicle window system, it is characterised in that: comprise the lifting system and pressure relief system thereof that drive glass for vehicle window to rise or decline;
Described lifting system comprises the multiple lifting branch road and the fluid branch road that utilize hydro-cylinder correspondence to drive every block lifting glass for vehicle window, and multiple described lifting branch road is all connected with fluid branch road, to form the lifting loop of fluid circulation;
Described lifting branch road comprises the magnetic valve of the bi-bit bi-pass connected successively, the lower chamber of described hydro-cylinder, the upper chamber of described hydro-cylinder,
Described fluid branch road comprises the fuel feeding fuel tank connected successively, motor-driven oil pump, three position four-way electromagnetic valve;
The magnetic valve of described bi-bit bi-pass and the upper chamber of described hydro-cylinder are connected with three position four-way electromagnetic valve respectively;
Described lifting loop by the oil stream in the magnetic valve switching pipeline of described three position four-way electromagnetic valve and bi-bit bi-pass to, with form drive that glass for vehicle window rises rise loop or glass decline loop falls;
Lifting loop correspondence described in each is provided with multiple lifting switch, and when the lifting switch described in each is triggered, the lifting loop answered with this lifting Switch Controller is started working, and rises or decline to control corresponding glass for vehicle window;
Magnetic valve, the described lifting switch of described motor, described three position four-way electromagnetic valve, described bi-bit bi-pass are all connected with central controller;
Lifting loop described in each is equipped with the described pressure relief system being connected, and described pressure relief system comprises the first pressure release branch road and the 2nd pressure release branch road that reclaim respectively and rise loop with fall loop fluid;
Described first pressure release branch road is connected with check valve, the first safety valve, pressure release fuel tank with after described lifting system communication successively at the inlet duct place in the lower chamber of described hydro-cylinder;
Described 2nd pressure release branch road is connected with the 2nd safety valve, described pressure release fuel tank with after described lifting system communication successively at the inlet duct place in the upper chamber of described hydro-cylinder.
2. unloading type lifting glass for vehicle window system automatically as claimed in claim 1, it is characterised in that: also it is connected with strainer between described fuel feeding fuel tank and oil pump.
3. unloading type lifting glass for vehicle window system automatically as claimed in claim 1, it is characterised in that: described three position four-way electromagnetic valve is also connected with oil return fuel tank.
4. unloading type lifting glass for vehicle window system automatically as claimed in claim 1, it is characterized in that: also comprise the key lifting switch being connected with described central controller, a described key lifting switch is connected respectively with described multiple lifting switch, when a described key lifting switch is triggered, more than one lifting system starts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410681976.XA CN104563719B (en) | 2014-11-24 | 2014-11-24 | Automatic unloading type lifting glass for vehicle window system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410681976.XA CN104563719B (en) | 2014-11-24 | 2014-11-24 | Automatic unloading type lifting glass for vehicle window system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104563719A CN104563719A (en) | 2015-04-29 |
| CN104563719B true CN104563719B (en) | 2016-06-01 |
Family
ID=53080708
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410681976.XA Active CN104563719B (en) | 2014-11-24 | 2014-11-24 | Automatic unloading type lifting glass for vehicle window system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104563719B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104832034B (en) * | 2015-05-08 | 2017-01-04 | 奇瑞商用车（安徽）有限公司 | A kind of automobile window glass elevating mechanism and use the method that this mechanism controls glass lifts |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT409656B (en) * | 1999-10-18 | 2002-10-25 | Hoerbiger Hydraulik | HYDRAULIC ACTUATING ARRANGEMENT |
| AT504791B1 (en) * | 2007-04-23 | 2008-08-15 | Hoerbiger Automatisierungstech | PUMP ARRANGEMENT |
| CN201090562Y (en) * | 2007-09-20 | 2008-07-23 | 韶关市起重机厂有限责任公司 | Electrohydraulic control system of tipper |
| CN101602336A (en) * | 2009-07-10 | 2009-12-16 | 中国第一汽车集团公司无锡柴油机厂 | Hydraulic system of wing opening type box van |
| CN201941711U (en) * | 2010-08-09 | 2011-08-24 | 蒋晓琴 | Electrohydraulically controlled movable vehicle window of air-conditioned bus |
-
2014
- 2014-11-24 CN CN201410681976.XA patent/CN104563719B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN104563719A (en) | 2015-04-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106051145A (en) | Vehicle door opening walking forbidding system | |
| CN103459286A (en) | Elevator drive power supply control | |
| CN112340630B (en) | Emergency hydraulic system | |
| CN104563719B (en) | Automatic unloading type lifting glass for vehicle window system | |
| CN202482016U (en) | Diesel fork lift truck hydraulic system with safety protection mechanism | |
| CN103613021A (en) | Winch hydraulic control system and engineering machinery | |
| CN205472131U (en) | Novel hydraulic system of colliery lift | |
| CN104594749B (en) | A kind of lifting glass for vehicle window system | |
| CN105502205A (en) | Lifting machine control method and device | |
| CN108249339B (en) | A kind of perseverance deceleration safety arrestment redundant hydraulic station and its control method | |
| CN106006317A (en) | Protection device and method for preventing accidental elevator movement | |
| CZ280875B6 (en) | Plunger elevator control system | |
| CN204474257U (en) | The hydraulic control device of hydraulic support leg | |
| CN102955442B (en) | Safety control and method | |
| CN201884374U (en) | Wheeled crane and hydraulic oil radiating system thereof | |
| CN112390158B (en) | Control method of emergency circuit electric control system | |
| CN204150851U (en) | A kind of car anti-running control circuit | |
| CN204751775U (en) | Prevent unexpected safety device who removes of car | |
| CN204940151U (en) | A kind of lifting type automobile deceleration strip | |
| CN210634395U (en) | Automatic lifting bow control system of underground unmanned electric locomotive | |
| CN202056130U (en) | Multi-way valve for forklift | |
| CN204643737U (en) | A kind of lifting machine control setup of Based PC B integrated circuit | |
| CN205858819U (en) | A kind of blowout prevention workover rig special transport vehicle hydraulic control system | |
| CN106312038A (en) | Safety control method for long ladle nozzle | |
| US1268109A (en) | Elevator-controlling system. |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |