CN106930350A - A kind of loader cab overturns hood hoisting system - Google Patents
A kind of loader cab overturns hood hoisting system Download PDFInfo
- Publication number
- CN106930350A CN106930350A CN201710258185.XA CN201710258185A CN106930350A CN 106930350 A CN106930350 A CN 106930350A CN 201710258185 A CN201710258185 A CN 201710258185A CN 106930350 A CN106930350 A CN 106930350A
- Authority
- CN
- China
- Prior art keywords
- magnetic valve
- mouthfuls
- hood
- valve
- oil
- 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.)
- Pending
Links
- 230000005520 electrodynamics Effects 0.000 claims abstract description 37
- 239000003921 oil Substances 0.000 claims abstract description 37
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 32
- 230000005611 electricity Effects 0.000 claims description 4
- 239000002828 fuel tank Substances 0.000 claims 1
- 230000000630 rising Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/16—Cabins, platforms, or the like, for drivers
- E02F9/166—Cabins, platforms, or the like, for drivers movable, tiltable or pivoting, e.g. movable seats, dampening arrangements of cabins
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D33/00—Superstructures for load-carrying vehicles
- B62D33/06—Drivers' cabs
- B62D33/063—Drivers' cabs movable from one position into at least one other position, e.g. tiltable, pivotable about a vertical axis, displaceable from one side of the vehicle to the other
Abstract
The invention discloses a kind of loader cab upset hood hoisting system, including hydraulic system and control system two parts；The hydraulic system includes electrodynamic pump, hydraulic oil container, check valve, the first magnetic valve, the second magnetic valve, driver's cab turnover oil cylinder, hood lift oil tank and overflow valve；The control system includes pressure sensor, controller, mode selection switch and raising switch；The pressure sensor is arranged on the oil-out of electrodynamic pump, and pressure sensor is connected with controller；The electrodynamic pump working condition of control system control hydraulic system controls magnetic valve to change the flow direction of hydraulic oil simultaneously, promotes oil cylinder to make the action of different strokes, different directions, completes driver's cab turnover, the action of hood raising.The present invention realizes driver's cabin automatic turning, hood raising, and driver's cabin, hood need not be dismantled during maintenance overhaul failure, saves maintenance time, is easy to the maintenance of loading machine.
Description
Technical field
The present invention relates to a kind of loading machine, specifically a kind of loader cab upset hood hoisting system.
Background technology
Because the gearbox of loading machine, hydraulic pump are placed in under-cab, there is quality when loading machine associated components are pushed away
When problem needs to repair, this allows for needing to pull down driver's cabin in maintenance and could conveniently repair, such wasting manpower and material resources,
When especially loading machine works out of doors so that maintenance is more difficult, extends equipment repair time.
The content of the invention
For the problem that above-mentioned prior art is present, the present invention provides a kind of loader cab upset hood raising system
System, hydraulic system is used alone an electrodynamic pump supply and drives on the premise of hydraulic oil is supplied using working barrel and steering pump
Room upset, hydraulic oil needed for hood raising, realize driver's cabin automatic turning, hood raising, need not be torn open during maintenance overhaul failure
Driver's cabin, hood are unloaded, maintenance time is saved, is easy to the maintenance of loading machine.
To achieve these goals, the technical solution adopted by the present invention is：A kind of loader cab overturns hood raising
System, it is characterised in that including hydraulic system and control system two parts；The hydraulic system include electrodynamic pump, hydraulic oil container,
Check valve, the first magnetic valve, the second magnetic valve, driver's cab turnover oil cylinder, hood lift oil tank and overflow valve；The electrodynamic pump
Oil inlet is connected with hydraulic oil container, and the oil-out of electrodynamic pump is connected with check valve, overflow valve oil inlet simultaneously, and electrodynamic pump connects
Connect power supply；The oil-out of the check valve is connected with pressure sensor, first magnetic valve P mouthfuls, P mouthfuls of the second magnetic valve simultaneously；
B mouthfuls of first magnetic valve is connected with big chamber B mouthfuls of driver's cab turnover oil cylinder, first magnetic valve A mouthfuls and driver's cab turnover oil cylinder
Small chamber A mouthfuls be connected, first magnetic valve T mouthfuls is connected with hydraulic oil container；B mouthfuls of second magnetic valve and hood lift oil tank
B mouthfuls is connected, and A mouthfuls of the second magnetic valve is connected with A mouthfuls of hood lift oil tank, and second magnetic valve T mouthfuls is connected with hydraulic oil container；Institute
Stating control system includes pressure sensor, controller, mode selection switch and raising switch；The pressure sensor is arranged on electricity
On the oil-out of dynamic pump, pressure sensor is connected with controller；The mode selection switch and power supply, controller, the first electromagnetism
Valve, the second magnetic valve are connected；The raising switch and the first magnetic valve, the second magnetic valve；The controller and electrodynamic pump, first
Magnetic valve, the second magnetic valve.
Of the invention further, the control system also includes the first relay and the second relay；First relay
Device is connected with power supply, controller, the first magnetic valve, the second magnetic valve, raising switch；Second relay and power supply, control
Device, the first magnetic valve, the second magnetic valve, raising switch are connected；Raising switch and the first magnetic valve, the second magnetic valve, the
One relay, the second relay are connected.
Of the invention further, the mode selection switch is provided with two or more, for selecting driver's cabin pattern, hood
Pattern and close pattern.
Of the invention further, the raising switch is provided with two or more, for selecting to rise, decline or stop.
Of the invention further, the pressure sensor is provided with multiple.
Present hydraulic system using working barrel and steering pump on the premise of hydraulic oil is supplied, and exclusive use one is electronic
Pump supply driver's cab turnover, hydraulic oil needed for hood raising, without the use of working barrel and steering pump.By controller according to pressure
The open and close of the electronic pump of Based Intelligent Control.It is driver's cab turnover pattern, hood that control system is selected by mode selection switch
Raising pattern, close pattern, switch control magnetic valve and commutate so as to controlling driver's cabin/hood to rise, decline, stop by raising
Only, detect that pressure signal determines whether to meet electrodynamic pump unlocking condition, convenient maintenance, failure to controller by pressure sensor
Check.
Brief description of the drawings
Fig. 1 is hydraulic principle block diagram of the invention；
Fig. 2 is control principle block diagram of the invention；
In figure：1st, hydraulic oil container, 2, electrodynamic pump, 3, pressure sensor, 4, check valve, the 5, first magnetic valve, the 5.1, first electromagnetism
Valve coil the 1,5.2, first electromagnetic valve coil 2,6, the second magnetic valve, the 6.1, second electromagnetic valve coil 1,6.2, the second line solenoid valve
Circle 2,7, driver's cab turnover oil cylinder, 8, hood lift oil tank, 9, overflow valve, 10, controller, 11, mode selection switch, 12,
First relay, the 13, second relay, 14, raising switch.
Specific embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
As depicted in figs. 1 and 2, a kind of loader cab upset hood hoisting system of the invention, including hydraulic system and
Control system two parts；Hydraulic system include electrodynamic pump 2, hydraulic oil container 1, check valve 4, the first magnetic valve 5, the second magnetic valve 6,
Driver's cab turnover oil cylinder 7, hood lift oil tank 8 and overflow valve 9；The oil inlet of electrodynamic pump 2 is connected with hydraulic oil container 1, electrodynamic pump 2
Oil-out simultaneously be connected with the 4 of the check valve, oil inlet of overflow valve 9, electrodynamic pump 2 connect power supply；The oil-out of check valve 4 is same
When be connected with pressure sensor 3, first magnetic valve 5P mouthfuls, P mouthfuls of the second magnetic valve 6；First magnetic valve 5B mouthfuls is turned over driver's cabin
Turn oil cylinder 7 big chamber B mouthfuls is connected, and first magnetic valve 5A mouthfuls is connected with small chamber A mouthfuls of driver's cab turnover oil cylinder 7, the first magnetic valve
5T mouthfuls is connected with hydraulic oil container 1；B mouthfuls of second magnetic valve 6 is connected with B mouthfuls of hood lift oil tank 8, A mouthfuls of the second magnetic valve 6
A mouthfuls with hood lift oil tank 8 is connected, and second magnetic valve 6T mouthfuls is connected with hydraulic oil container 1；Control system includes pressure sensor
3rd, controller 10, mode selection switch 11 and raising switch 14；Pressure sensor 3 is arranged on the oil-out of electrodynamic pump 2, pressure
Sensor 3 is connected with controller 10；Mode selection switch 11 and power supply, controller 10, the first magnetic valve 5, the phase of the second magnetic valve 6
Even；Raising switch 14 and the first magnetic valve 5, the second magnetic valve 6；Controller 10 and electrodynamic pump 2, the first magnetic valve 5, the second electromagnetism
Valve 6.The working condition of electrodynamic pump 2 of control system control hydraulic system controls magnetic valve to change the flow direction of hydraulic oil simultaneously, promotes
Oil cylinder makes the action of different strokes, different directions, completes driver's cab turnover, the action of hood raising.
On the basis of said structure, control system of the present invention also includes the first relay 12 and the second relay 13；First
Relay 12 is connected with power supply, controller 10, the first magnetic valve 5, the second magnetic valve 6, raising switch 14；Second relay
13 are connected with power supply, controller 10, the first magnetic valve 5, the second magnetic valve 6, raising switch 14；The raising switch 14 and first
Magnetic valve 5, the second magnetic valve 6, the first relay 12, the second relay 13 are connected.It is only for one embodiment of the invention, certainly
The present invention can simultaneously use 2 relays, or simply use 1 relay, or not use relay, or use multiple relays
Device.
Mode selection switch of the present invention 11 can be provided with two or more, for select driver's cabin pattern, hood pattern and
Close pattern.
Raising switch 14 of the present invention is provided with two or more, for selecting to rise, decline or stop.
Pressure sensor of the present invention 3 can set one or more sensors, naturally it is also possible to be replaced using pressure switch
For pressure sensor.
The course of work of the present invention is as follows：When mode selection switch 11 chooses driver's cabin pattern, in the selection of raising switch 14
Position is risen, relay 12 works, rising signals are exported to controller 10, while first line solenoid valve of the one end of the first magnetic valve 5
Circle 15.1 is powered is moved to the left the valve body of the first magnetic valve 5, and first magnetic valve 5P mouthfuls communicates with B mouthfuls；Controller 10 is received
The rising signals of the output of relay 12, while gathering the pressure value signal of pressure sensor 3, output signal to electrodynamic pump 2, electronic
Pump 2 is started working；Hydraulic oil by the oil-out of electrodynamic pump 2 by P mouthfuls of the first magnetic valve 5 with B mouthful entrance driver's cab turnover oil cylinder
7 is big chamber B mouthfuls, while the small chamber hydraulic oil of driver's cab turnover oil cylinder 7 returns to hydraulic oil by A mouthfuls, A mouthfuls of the first magnetic valve 5 and T mouthfuls
Case, realizes that driver's cab turnover is acted.
When mode selection switch 11 chooses driver's cabin pattern, raising switch 14 selects down position, relay 13 to work
Output dropping signal is to controller 10, while first electromagnetic valve coil 25.2 of the other end of the first magnetic valve 5 is powered makes the first electricity
The valve body of magnet valve 5 moves right, and first magnetic valve 5P mouthfuls communicates with A mouthfuls；Controller 10 receives the decline of the output of relay 13
Signal, while gathering the pressure value signal of pressure sensor 3, outputs signal to electrodynamic pump 2, and electrodynamic pump 2 is started working；Hydraulic oil
It is small chamber A mouthfuls by P mouthfuls and A mouthfuls entrance driver's cab turnover oil cylinder 7 of the first magnetic valve 5 by the oil-out of electrodynamic pump 2, while driver's cabin
The big chamber hydraulic oil of overturning oil cylinder 7 returns to hydraulic oil container by B mouthfuls, B mouthfuls of the first magnetic valve 5 and T mouthfuls, realizes that driver's cabin declines dynamic
Make.
When mode selection switch 11 chooses hood pattern, raising switch 14 selects raising position, and relay 12 works, defeated
Go out rising signals to controller 10, while second electromagnetic valve coil 16.1 of the one end of the second magnetic valve 6 is powered makes the second magnetic valve 6
Valve body be moved to the left, second magnetic valve 6P mouthfuls communicates with B mouthfuls；Controller 10 receives the raising signal of the output of relay 12, together
When collection pressure sensor 3 pressure value signal, output signal to electrodynamic pump 2, electrodynamic pump 2 is started working；Hydraulic oil is by electronic
The oil-out of pump 2 is big chamber B mouthfuls by P mouthfuls and B mouthfuls entrance driver's cab turnover oil cylinder 7 of the first magnetic valve 5, while driver's cab turnover is oily
The small chamber hydraulic oil of cylinder 8 returns to hydraulic oil container by A mouthfuls, A mouthfuls of the first magnetic valve 6 and T mouthfuls, realizes that hood raising is acted.
When mode selection switch 11 chooses hood pattern, raising switch 14 selects down position, and relay 13 works, defeated
Go out dropping signal to controller 10, while second electromagnetic valve coil 26.2 of the other end of the second magnetic valve 6 is powered makes the second electromagnetism
The valve body of valve 6 moves right, and second magnetic valve 6P mouthfuls communicates with A mouthfuls；Controller 10 receives the dropping signal of the output of relay 13,
The pressure value signal of sensor 3 is gathered simultaneously, electrodynamic pump 2 is output signals to, and electrodynamic pump 2 is started working；Hydraulic oil is by electrodynamic pump 2
Oil-out is small chamber A mouthfuls by P mouthfuls and A mouthfuls entrance driver's cab turnover oil cylinder 7 of the second magnetic valve 6, while driver's cab turnover oil cylinder 8
Big chamber hydraulic oil returns to hydraulic oil container by B mouthfuls, B mouthfuls of the first magnetic valve 6 and T mouthfuls, realizes hood down maneuver.
First magnetic valve 5T mouthfuls, T mouthfuls of the second magnetic valve 6 and overflow valve T mouthfuls is connected with hydraulic oil container respectively.When pressure is passed
When sensor 3 detects hydraulic system pressure and reaches setup pressure value, controller 10 is issued a signal to, controller 10 sends signal extremely
Electrodynamic pump 2, the relay of electrodynamic pump 2 power-off, electrodynamic pump 2 is stopped.
Certainly, above-described embodiment is only preferred scheme of the invention, is specifically not limited thereto, on this basis can basis
It is actually needed and makes with targetedly adjusting, so as to obtain different implementation methods.Because mode in the cards is more, this
In just no longer illustrate one by one.
Claims (5)
1. a kind of loader cab overturns hood hoisting system, it is characterised in that including hydraulic system and control system two
Point；
The hydraulic system includes electrodynamic pump（2）, hydraulic oil container（1）, check valve（4）, the first magnetic valve（5）, the second magnetic valve
（6）, driver's cab turnover oil cylinder（7）, hood lift oil tank（8）And overflow valve（9）；The electrodynamic pump（2）Oil inlet and hydraulic pressure
Fuel tank（1）It is connected, electrodynamic pump（2）Oil-out simultaneously with check valve（4）, overflow valve（9）Oil inlet be connected, electrodynamic pump
（2）Connection power supply；The check valve（4）Oil-out simultaneously and pressure sensor（3）, the first magnetic valve（5）P mouthfuls, the second electricity
Magnet valve（6）P mouthfuls be connected；First magnetic valve（5）B mouthfuls and driver's cab turnover oil cylinder（7）Big chamber B mouthfuls be connected, first electricity
Magnet valve（5）A mouthfuls and driver's cab turnover oil cylinder（7）Small chamber A mouthfuls be connected, the first magnetic valve（5）T mouthfuls and hydraulic oil container（1）It is connected；
Second magnetic valve（6）B mouthfuls with hood lift oil tank（8）B mouthfuls be connected, the second magnetic valve（6）A mouthfuls with hood raising
Oil cylinder（8）A mouthfuls be connected, the second magnetic valve（6）T mouthfuls and hydraulic oil container（1）It is connected；
The control system includes pressure sensor（3）, controller（10）, mode selection switch（11）Switched with raising（14）；
The pressure sensor（3）Installed in electrodynamic pump（2）Oil-out on, pressure sensor（3）With controller（10）It is connected；It is described
Mode selection switch（11）With power supply, controller（10）, the first magnetic valve（5）, the second magnetic valve（6）It is connected；The raising is opened
Close（14）With the first magnetic valve（5）, the second magnetic valve（6）It is connected；The controller（10）With electrodynamic pump（2）, the first magnetic valve
（5）, the second magnetic valve（6）It is connected.
2. loader cab according to claim 1 overturns hood hoisting system, it is characterised in that the control system
Also include the first relay（12）With the second relay（13）；
First relay（12）With power supply, controller（10）, the first magnetic valve（5）, the second magnetic valve（6）, raising switch
（14）It is connected；Second relay（13）With power supply, controller（10）, the first magnetic valve（5）, the second magnetic valve（6）, raising
Switch（14）It is connected；The raising switch（14）With the first magnetic valve（5）, the second magnetic valve（6）, the first relay（12）,
Two relays（13）It is connected.
3. loader cab according to claim 1 and 2 overturns hood hoisting system, it is characterised in that the pattern
Selecting switch（11）It is provided with two or more, for selecting driver's cabin pattern, hood pattern and close pattern.
4. loader cab according to claim 1 and 2 overturns hood hoisting system, it is characterised in that the raising
Switch（14）It is provided with two or more, for selecting to rise, decline or stop.
5. loader cab according to claim 1 and 2 overturns hood hoisting system, it is characterised in that the pressure
Sensor（3）It is provided with multiple.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710258185.XA CN106930350A (en) | 2017-04-19 | 2017-04-19 | A kind of loader cab overturns hood hoisting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710258185.XA CN106930350A (en) | 2017-04-19 | 2017-04-19 | A kind of loader cab overturns hood hoisting system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106930350A true CN106930350A (en) | 2017-07-07 |
Family
ID=59438432
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710258185.XA Pending CN106930350A (en) | 2017-04-19 | 2017-04-19 | A kind of loader cab overturns hood hoisting system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106930350A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107472382A (en) * | 2017-08-15 | 2017-12-15 | 安徽江淮汽车集团股份有限公司 | A kind of driver's cab turnover control device and its control method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0736443A1 (en) * | 1995-04-04 | 1996-10-09 | Applied Power Inc. | Hydraulic tilting device for a cab |
| CN201943099U (en) * | 2010-08-25 | 2011-08-24 | 徐州万邦重型机械科技有限公司 | Cylinder elevating mechanism for grader engine hood |
| JP2013237986A (en) * | 2012-05-11 | 2013-11-28 | Kobe Steel Ltd | Operator cab lifting device |
| CN203362685U (en) * | 2013-07-31 | 2013-12-25 | 中国重汽集团济南动力有限公司 | Electric hydraulic control device for lifting supporting bridge |
| CN205371121U (en) * | 2016-02-03 | 2016-07-06 | 徐州徐工挖掘机械有限公司 | Lift hydraulic circuit |
| CN205841127U (en) * | 2016-06-29 | 2016-12-28 | 浙江科力车辆控制系统有限公司 | Hydraulic cab lifting device |
| CN206667341U (en) * | 2017-04-19 | 2017-11-24 | 徐工集团工程机械股份有限公司科技分公司 | Loader cab overturns hood hoisting system |
-
2017
- 2017-04-19 CN CN201710258185.XA patent/CN106930350A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0736443A1 (en) * | 1995-04-04 | 1996-10-09 | Applied Power Inc. | Hydraulic tilting device for a cab |
| CN201943099U (en) * | 2010-08-25 | 2011-08-24 | 徐州万邦重型机械科技有限公司 | Cylinder elevating mechanism for grader engine hood |
| JP2013237986A (en) * | 2012-05-11 | 2013-11-28 | Kobe Steel Ltd | Operator cab lifting device |
| CN203362685U (en) * | 2013-07-31 | 2013-12-25 | 中国重汽集团济南动力有限公司 | Electric hydraulic control device for lifting supporting bridge |
| CN205371121U (en) * | 2016-02-03 | 2016-07-06 | 徐州徐工挖掘机械有限公司 | Lift hydraulic circuit |
| CN205841127U (en) * | 2016-06-29 | 2016-12-28 | 浙江科力车辆控制系统有限公司 | Hydraulic cab lifting device |
| CN206667341U (en) * | 2017-04-19 | 2017-11-24 | 徐工集团工程机械股份有限公司科技分公司 | Loader cab overturns hood hoisting system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107472382A (en) * | 2017-08-15 | 2017-12-15 | 安徽江淮汽车集团股份有限公司 | A kind of driver's cab turnover control device and its control method |
| CN107472382B (en) * | 2017-08-15 | 2019-08-06 | 安徽江淮汽车集团股份有限公司 | A kind of driver's cab turnover control device and its control method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101370985B (en) | Method for controlling a hydraulic cylinder and control system for a work machine | |
| CN102730563B (en) | Wheeled crane and electronic control steering hydraulic control system thereof | |
| CN108458101A (en) | Opening door of vehicle forbids running gear and its working method | |
| US8858151B2 (en) | Machine having hydraulically actuated implement system with down force control, and method | |
| CN102588359A (en) | Hydraulic system, excavator and control method of hydraulic system | |
| CN105544645B (en) | A kind of sliding loader and its hydraulic system of working with safety protection function | |
| CN103015725B (en) | Boom hydraulic system, control method thereof, boom system and concrete pumping equipment | |
| US9297148B2 (en) | Intelligent boom control hydraulic system | |
| CN106930350A (en) | A kind of loader cab overturns hood hoisting system | |
| CN206667341U (en) | Loader cab overturns hood hoisting system | |
| CN107010571A (en) | Industrial vehicle | |
| CN109606234A (en) | The control method of tailgate system, vehicle and tailgate system | |
| CN203655739U (en) | Pulling-arm type self loading and unloading device and garbage truck with detachable compartment provided therewith | |
| CN104495651A (en) | Automatic synchronous bottom oil cylinder jacking and lowering device of crawling crane | |
| CN106717212A (en) | Tractor equipment management control method | |
| CN108119419A (en) | A kind of electrohydraulic servo system of new type hydraulic turbine governor | |
| CN103459860A (en) | Load sense control with standby mode in case of overload | |
| CN205557639U (en) | Skid -steer loader and work hydraulic system with safety protection function | |
| CN104030197A (en) | Device and method for controlling lifting speed of forklift | |
| CN210565406U (en) | Hydraulic system of agricultural tricycle | |
| CN202937011U (en) | Arm support hydraulic system and arm support system and concrete pumping equipment | |
| CN205956100U (en) | Vehicular road surface operation equipment lift cylinder control device | |
| JP2539648Y2 (en) | Hydraulic motor controller for fork elevating | |
| CN104314901A (en) | Valve device, flow priority control loop and vehicle | |
| CN204125125U (en) | The anti-overload system of the full fork truck that freely hoists |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |