CN106006387A - Air conditioner rotation system and engineering machine with same - Google Patents
Air conditioner rotation system and engineering machine with same Download PDFInfo
- Publication number
- CN106006387A CN106006387A CN201610307487.7A CN201610307487A CN106006387A CN 106006387 A CN106006387 A CN 106006387A CN 201610307487 A CN201610307487 A CN 201610307487A CN 106006387 A CN106006387 A CN 106006387A
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- Prior art keywords
- air
- conditioning
- rotary
- valve
- hydraulic
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/18—Control systems or devices
- B66C13/20—Control systems or devices for non-electric drives
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
- B60H1/00735—Control systems or circuits characterised by their input, i.e. by the detection, measurement or calculation of particular conditions, e.g. signal treatment, dynamic models
Abstract
The invention discloses an air conditioner rotation system and an engineering machine with the same. The air conditioner rotation system comprises a rotation device, an air conditioning device (4) and a control device, wherein the rotation device comprises a rotation hydraulic motor (7); the air conditioning device (4) comprises an air conditioning hydraulic motor (41), and the air conditioning hydraulic motor (41) and the rotation hydraulic motor (7) are driven by the same hydraulic source; and the control device is used for preventing the air conditioning device (4) from shifting working states when the rotation device in a working state. According to the air conditioner rotation system, one hydraulic source is used for driving the air conditioning device and the rotation device, so that the cost is low, and the required installation space is small; and meanwhile, the control device is arranged and used for preventing the air conditioning device from shifting the starting and stopping states when the rotation device is in the working state, and accordingly shaking, caused by starting and stopping of an air conditioner, in the rotation process of the rotation device is effectively avoided.
Description
Technical field
The present invention relates to technical field of engineering machinery, particularly relate to a kind of air-conditioning rotary system and there is its engineering machinery.
Background technology
Air-conditioning device and slewing equipment are the common apparatus in engineering machinery.Air-conditioning device is used for carrying out air regulation, in particular for being adjusted the air themperature of driver's cabin.Slewing equipment is for being driven the rotary table being arranged on chassis, to control the rotation of rotary table.In part engineering machinery, air-conditioning device and slewing equipment all use hydraulic power supply as power source.In the case, air-conditioning device and slewing equipment are usually jointly referred to as air-conditioning rotary system.
In the prior art, air-conditioning rotary system is generally of two kinds of structures.In the first structure, air-conditioning device is arranged in parallel with slewing equipment, and is driven by same pump.When slewing equipment works, if air-conditioning device is opened under the control of temperature detect switch (TDS), the gyration of slewing equipment can be impacted, thus cause in turning course, produce revolution shaking phenomenon.In the second structure, air-conditioning device is also provided with a pump as power source, avoids the impact on slewing equipment of the air-conditioning device.The second structure can be prevented effectively from due to rocking that air-conditioning start and stop cause in turning course, but cost increases more, and it is big to take up room, and arranges inconvenience.
Thus, it is desirable to have a kind of technical scheme overcomes or at least alleviates at least one in the drawbacks described above of prior art.
Summary of the invention
It is an object of the invention to provide a kind of air-conditioning rotary system overcome or at least alleviate at least one in the drawbacks described above of prior art.
For achieving the above object, the present invention provides a kind of air-conditioning rotary system, and described air-conditioning rotary system includes:
Slewing equipment, it includes rotary fluid motor；
Air-conditioning device；It includes air-conditioning hydraulic motor, and wherein, described air-conditioning hydraulic motor is driven by same hydraulic power source with described rotary fluid motor, and
Controlling device, described control device, when described slewing equipment is in running order, stops described air-conditioning device to switch open/close states.Stop described air-conditioning device switching open/close states to refer to stop described air-conditioning device switch operating state, i.e. stop air-conditioning device to switch to opening from closed mode, and stop air-conditioning device to switch to closed mode from opening.
Preferably, described air-conditioning rotary system farther includes airconditioning control valve, and described airconditioning control valve has the first operating position and the second operating position,
In described first operating position, described air-conditioning hydraulic motor is accessed the hydraulic circuit driven by described hydraulic power source by described airconditioning control valve；
In described second operating position, described airconditioning control valve makes described air-conditioning hydraulic motor not access the hydraulic circuit driven by described hydraulic power source.
Preferably, described airconditioning control valve is electromagnetic valve, and is in described second operating position under power failure state.It should further be appreciated that described control device controls described airconditioning control valve according to the state of described slewing equipment.Such as, when described slewing equipment is in running order, described airconditioning control valve is arranged on the second operating position；When described slewing equipment is in off working state, described airconditioning control valve is arranged on the first operating position.
Preferably, described air-conditioning rotary system farther includes:
Pressure switch, the driving pressure of its described rotary fluid motor of detection, and testing result is delivered to described control device, described control device judges the duty of described slewing equipment based on described testing result.
Preferably, described pressure switch is delivered to the testing result of described control device is the signal of telecommunication.
Preferably, described slewing equipment farther includes:
Brake, it can switch between on-position and release conditions, in described on-position, it stops described rotary fluid motor to rotate, wherein, described brake is hydraulic control brake, when the pressure controlling end is more than or equal to setting value, described brake switches to release conditions from on-position, it is allowed to described rotary fluid motor rotates；
Rotary buffering valve, described rotary buffering valve is arranged between described hydraulic power source and described rotary fluid motor, and two actuator ports of described rotary buffering valve are connected with two hydraulic fluid ports of described rotary fluid motor respectively；
Rotatary brake valve, it is arranged between described rotary buffering valve and described brake, for the pressure differential of two actuator ports according to rotary buffering valve, carrys out the control end to described brake and applies to control pressure,
Wherein, described pressure switch detects the control pressure controlling end of described brake.
Preferably, described control device is the control unit of chip form, and described control unit electrically connects with temperature sensor, pressure switch, and the signal fed back according to described temperature sensor and pressure switch, controls described airconditioning control valve.
The present invention also provides for a kind of engineering machinery, and described engineering machinery includes air-conditioning rotary system as above.
Preferably, described engineering machinery is wheeled crane.
The air-conditioning rotary system of the present invention utilizes a hydraulic power source to drive air-conditioning device and slewing equipment, thus has relatively low cost and less required installing space；Meanwhile, control device is set, when described slewing equipment is in running order, stops described air-conditioning device to switch open/close states, thus effectively prevent the jitter problem that slewing equipment causes with cut out due to starting of air conditioner in turning course.
Accompanying drawing explanation
Fig. 1 is the schematic block diagram of air-conditioning rotary system according to an embodiment of the invention.
Fig. 2 is the electrical schematic diagram of the Air-Conditioning Control Panel of air-conditioning rotary system according to an embodiment of the invention.
Reference:
| 1 | Fuel tank | 9 | Rotatary brake valve |
| 2 | Pump | 10 | Brake |
| 3 | Return filter | 11 | Temperature sensor |
| 4 | Air-conditioning device | 12 | Control unit |
| 5 | Reversing control valve | 13 | Airconditioning control valve |
| 6 | Pressure switch | 14 | Condensation fan |
| 7 | Rotary fluid motor | 41 | Air-conditioning hydraulic motor |
| 8 | Rotary buffering valve |
Detailed description of the invention
In the accompanying drawings, same or similar label is used to represent same or similar element or have the element of same or like function.
In describing the invention; term " orientation or the position relationship of the instruction such as " center ", " longitudinally ", " laterally ", "front", "rear", "left", "right", " vertically ", " level ", " top ", " end " " interior ", " outward " they be based on orientation shown in the drawings or position relationship; be for only for ease of the description present invention and simplifying and describe; rather than instruction or imply the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that limiting the scope of the invention.
Seeing Fig. 1, air-conditioning rotary system includes according to an embodiment of the invention: slewing equipment；Air-conditioning device 4；And control device (seeing the control unit 12 of Fig. 2).Described slewing equipment includes rotary fluid motor 7.Described air-conditioning device is the air-conditioning device of hydraulic drive, including air-conditioning hydraulic motor 41.Wherein, air-conditioning hydraulic motor 41 is driven by same hydraulic power source (the usually pump 2 in Fig. 1) with rotary fluid motor 7.Described control device, when described slewing equipment is in running order, stops described air-conditioning device switch operating state.
It is to say, when described slewing equipment is in running order, do not allow air-conditioning device 4 to switch to closed mode from starting state, air-conditioning device 4 is not the most allowed to switch to starting state (also referred to as duty) from closed mode.Advantageously, when described slewing equipment is in running order, air-conditioning device is not allowed to switch to starting state from closed mode.It should further be appreciated that only allow slewing equipment and air-conditioning device to select the operation of, and slewing equipment has more preferable priority level.
Preferably, described air-conditioning rotary system farther includes airconditioning control valve 13.Thus, control whether air-conditioning device works by controlling airconditioning control valve 13.Seeing Fig. 1, airconditioning control valve 13 has the first operating position and the second operating position.In described first operating position, described air-conditioning hydraulic motor is accessed the hydraulic circuit driven by described hydraulic power source by described airconditioning control valve, say, that air-conditioning hydraulic motor is determined by pump.In described second operating position, described airconditioning control valve makes described air-conditioning hydraulic motor 41 not access the hydraulic circuit driven by described hydraulic power source, say, that air-conditioning hydraulic motor 41 is not driven by pump, in other words, the pressure fluid from pump 2 is not passed through air-conditioning hydraulic motor 41.
Advantageously, airconditioning control valve 13 is electromagnetic valve, thus controls convenient and flexible.Airconditioning control valve is in described second operating position under power failure state.It should further be appreciated that described control device controls described airconditioning control valve according to the state of described slewing equipment.Such as, when described slewing equipment is in running order, described airconditioning control valve is arranged on the second operating position；When described slewing equipment is in off working state, described airconditioning control valve is arranged on the first operating position.
It is pointed out that airconditioning control valve 13 can also be pilot operated valve device, such as, airconditioning control valve can be controlled by the output port of Rotatary brake valve.Additionally, for the connection of air-conditioning hydraulic motor and rotary fluid motor and control mode, be not limited to the embodiment of diagram.In one alternate embodiment, air-conditioning hydraulic motor and rotary fluid motor are connected in parallel between pump and fuel tank, and a two-way electromagnetic valve or two-way pilot operated valve device by connecting with air-conditioning hydraulic motor control whether air-conditioning hydraulic motor works.Now, the reversing control valve in Fig. 1 could alternatively be three-position four-way valve.
It is to say, control device to be not limited to the control unit 12 of the chip form shown in Fig. 2.Such as, control device and can also is that the control device of a hydraulic type, or machine control unit.More specifically, in one embodiment, airconditioning control valve 13 is a pilot operated valve device, when to the driving pressure of rotary fluid motor 7 more than setting value, rotary fluid motor 7 is driven, and now controls airconditioning control valve 3 in fluid power mode and is allowed to be locked in the second duty.
In a preferred embodiment, described air-conditioning rotary system farther includes pressure switch 6.Described pressure switch 6 detects the driving pressure of described rotary fluid motor 7, and testing result is delivered to described control device, and described control device judges the duty of described slewing equipment based on described testing result.It is understood that when driving pressure more than setting value, it is believed that slewing equipment is in running order.Preferably, described pressure switch is delivered to the testing result of described control device is the signal of telecommunication.
Advantageously, described slewing equipment farther includes brake 10.Brake 10 its can switch between on-position and release conditions, in described on-position, it stops described rotary fluid motor 7 to rotate, wherein, described brake 10 is hydraulic control brake, when the pressure controlling end is more than or equal to setting value, described brake switches to release conditions from on-position, it is allowed to described rotary fluid motor 7 rotates；
Rotary buffering valve 8, described rotary buffering valve 8 is arranged between described hydraulic power source and described rotary fluid motor 7, and two actuator ports of described rotary buffering valve 8 are connected with two hydraulic fluid ports of described rotary fluid motor 7 respectively；
Rotatary brake valve 9, it is arranged between described rotary buffering valve 8 and described brake 10, for the pressure differential of two actuator ports according to rotary buffering valve 8, carrys out the control end to described brake 10 and applies to control pressure,
Wherein, described pressure switch 6 detects the control pressure controlling end of described brake 10.
Preferably, described control device is the control unit 2 of chip form, and described control unit 2 electrically connects with temperature sensor 11, pressure switch 6, and the signal fed back according to described temperature sensor 11 and pressure switch 6, controls described airconditioning control valve 13.Thus, control mode is more flexible, and simple in construction, lays easily.
See Fig. 2, control the control unit 2 that device is chip form.Control unit 2 electrically connects with temperature sensor 11, pressure switch 6, and the signal fed back according to described temperature sensor 11 and pressure switch 6, controls described airconditioning control valve 13.It is understood that control unit 2 can also be relevant to more airconditioning control device (such as, condensation fan 14 etc.) electrical connection, and it is controlled.
The present invention also provides for a kind of engineering machinery, and described engineering machinery includes air-conditioning rotary system as above.
Preferably, described engineering machinery is wheeled crane.
Above-mentioned air-conditioning rotary system utilizes a hydraulic power source to drive air-conditioning device and slewing equipment, thus has relatively low cost and less required installing space；Meanwhile, control device is set, when described slewing equipment is in running order, stops described air-conditioning device to switch open/close states, thus effectively prevent the jitter problem that slewing equipment causes with cut out due to starting of air conditioner in turning course.As it was previously stated, stop described air-conditioning device to switch open/close states, refer to stop described air-conditioning device switch operating state, i.e. stop air-conditioning device to switch to opening from closed mode, and stop air-conditioning device to switch to closed mode from opening.
Structure and working method to embodiments of the invention are described in more details below in conjunction with the accompanying drawings.
Air-conditioning rotary system shown in Fig. 1 includes rotary buffering valve 8, Rotatary brake valve 9, fuel tank 1, pump 2, air-conditioning device 4, return filter 3, controls reversal valve 5, pressure switch 6 and rotary fluid motor 7.
P be oil-in, A1, B1 mouth be brake operation hydraulic fluid port, T be oil return hydraulic fluid port, L be leakage hydraulic fluid port, A and B be the actuator port of rotary buffering valve 8.
When air-conditioning device works: by fuel tank 1 and pump 2 fuel feeding, airconditioning control valve 13 obtains electric, the spool of airconditioning control valve upwards moves, make pressure oil through air-conditioning hydraulic motor 41, again through being in control reversal valve 5 and the return filter 3 of middle position, it is eventually returned to fuel tank, drives air-conditioning hydraulic motor 41 to work.
Under the duty of air-conditioning device, on the one hand, being in middle position owing to controlling reversal valve 5, pressure oil will not flow to rotary fluid motor 7, thus slewing equipment does not works.On the other hand, owing to airconditioning control valve 13 obtains electric, being in bottom, pressure oil flows through air-conditioning hydraulic motor 41, thus air-conditioning device works.
When slewing equipment works: by fuel tank 1 and pump 2 fuel feeding, airconditioning control valve 13 must not be electric, and the spool of airconditioning control valve is to moving down, and oil circuit is directly over airconditioning control valve 13, and is not passed through air-conditioning hydraulic motor 41, thus air-conditioning device 4 does not works.Pressure oil is by being in upper (such as turning left) or the control reversal valve 5 of the next (such as turning left corresponding to slewing equipment) corresponding to slewing equipment, again by return filter 3 oil sump tank after rotary buffering valve 8, Rotatary brake valve 9 and rotary fluid motor 7, control slewing equipment and turn left or right-hand rotation work.
Under the duty of slewing equipment, on the one hand, be in upper or the next owing to controlling reversal valve 5, pressure oil flows to rotary fluid motor 7, thus slewing equipment works.On the other hand, if airconditioning control valve 13 obtains electric, then pressure oil flows through air-conditioning hydraulic motor 41, thus air-conditioning device works；If airconditioning control valve 13 dead electricity, then pressure oil flows through air-conditioning hydraulic motor 41, thus air-conditioning device does not works.In the case of slewing equipment works, if the duty of air-conditioning device changes (such as, do not run from running to, or never run to run), moment in change, all will cause the pressure jump flowing through the pressure oil of rotary fluid motor, thus cause the fluctuation of slewing equipment gyration.
In order to avoid described fluctuation, it is advantageous to when slewing equipment works, the duty of air-conditioning device is not allowed to change.An optional embodiment is, by controlling device, slewing equipment can only alternatively be worked with air-conditioning device, and slewing equipment has higher priority level.In another optional embodiment, make in the case of slewing equipment works by controlling device, do not allow to change the duty of air-conditioning device.
Below slewing equipment is turned left and pressure oil flow path when turning right illustrates.
When controlling reversal valve 5 and being in upper, pressure oil passes through rotary buffering valve 8, through A mouth working oil path, Rotatary brake valve 9 is entered again by A1 mouth brake operation hydraulic fluid port, thus open trainstop, make slewing equipment be in opening, say, that, release the braking to rotary fluid motor 7, it is allowed to rotary fluid motor 7 rotates.Meanwhile, pressure oil passes sequentially through A mouth actuator port, rotary fluid motor 7 and B mouth actuator port, thus is driven back to rotating hydraulic motor.
When controlling reversal valve 5 and being in bottom, pressure oil passes through rotary buffering valve 8, through B mouth working oil path, then enters Rotatary brake valve 9 by B1 mouth brake operation hydraulic fluid port, thus opens trainstop, makes slewing equipment be in opening.Meanwhile, pressure oil passes sequentially through B mouth actuator port, rotary fluid motor 7 and B mouth actuator port, thus is driven back to rotating hydraulic motor 7 and turns right.
Switching to slewing equipment and the duty of air-conditioning device below illustrates.
When air-conditioning device and slewing equipment are all not located in running status, and when needing to start one of both work, directly initiate.When starting air-conditioning device, it is electric that control device makes airconditioning control valve 13 obtain, and the spool of airconditioning control valve is in upper；Simultaneously so that reversing control valve is in middle position.When starting slewing equipment, it is electric that control device makes airconditioning control valve 13 obtain, and the spool of airconditioning control valve is in upper；Meanwhile, according to the needs turned left or turn right so that reversing control valve is in upper or the next.
Start the signal of air-conditioning device, usually from temperature controller or temperature sensor, it is also possible to from other elements or control unit.Start the signal of slewing equipment, usually from revolution actuation means, it is also possible to from other elements or control unit.
When slewing equipment is in running status, and when needing to start air-conditioning device, stop and start air-conditioning device.To avoid the startup of air-conditioning device on the impact of pressure in hydraulic circuit.This impact is usually such that abrupt pressure reduction, and this will cause slowing down suddenly or even pausing of slewing equipment gyration.
When air-conditioning device is in running status, and when needing to start slewing equipment, close air-conditioning device 4, and start slewing equipment.Close air-conditioning device by making airconditioning control valve 13 dead electricity realize.
Preferably, rotary buffering valve 8 is the Bidirectional balanced valve of a kind of symmetrical structure.Oil-feed side hydraulic oil is driven back to rotating hydraulic motor through reversing control valve 5 to A or B mouth, it is achieved the function of equalizing and buffering.Additionally, Rotatary brake valve is through reversing control valve 5 to A1 or B1 mouth, the effect that the trainstop before forming slewing equipment work or terminating opens and closes by oil-feed side hydraulic oil, play safeguard protection effect.
Last it is noted that above example is only in order to illustrate technical scheme, it is not intended to limit.It will be understood by those within the art that: the technical scheme described in foregoing embodiments can be modified, or wherein portion of techniques feature is carried out equivalent；These amendments or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (10)
1. an air-conditioning rotary system, it is characterised in that including:
Slewing equipment, it includes rotary fluid motor (7)；
Air-conditioning device (4)；It includes air-conditioning hydraulic motor (41), wherein, described air-conditioning hydraulic motor (41)
Drive by same hydraulic power source with described rotary fluid motor (7), and
Controlling device, described control device, when described slewing equipment is in running order, stops described sky
Adjust device (4) switching open/close states.
2. air-conditioning rotary system as claimed in claim 1, it is characterised in that farther include air-conditioning control
Valve processed (13), described airconditioning control valve (13) has the first operating position and the second operating position,
In described first operating position, described airconditioning control valve (13) is by described air-conditioning hydraulic motor (41)
Access the hydraulic circuit driven by described hydraulic power source；
In described second operating position, described airconditioning control valve (13) makes described air-conditioning hydraulic motor (41)
Do not access the hydraulic circuit driven by described hydraulic power source.
3. air-conditioning rotary system as claimed in claim 2, it is characterised in that described airconditioning control valve (13)
It is electromagnetic valve, and under power failure state, is in described second operating position.
4. air-conditioning rotary system as claimed in claim 2 or claim 3, it is characterised in that farther include:
Pressure switch (6), it detects the driving pressure of described rotary fluid motor (7), and detection is tied
Fruit is delivered to described control device, and described control device judges described slewing equipment based on described testing result
Duty.
5. air-conditioning rotary system as claimed in claim 4, it is characterised in that described pressure switch (6)
The testing result being delivered to described control device is the signal of telecommunication.
6. air-conditioning rotary system as claimed in claim 4, it is characterised in that described slewing equipment enters
Step includes:
Brake (10), it can switch between on-position and release conditions, in described on-position,
It stops described rotary fluid motor (7) to rotate, and wherein, described brake (10) is hydraulic control brake,
When the pressure controlling end is more than or equal to setting value, described brake switches to release conditions from on-position,
Described rotary fluid motor (7) is allowed to rotate；
Rotary buffering valve (8), described rotary buffering valve (8) is arranged on described hydraulic power source and described revolution liquid
Between pressure motor (7), two actuator ports of described rotary buffering valve (8) respectively with described revolution hydraulic pressure
Two hydraulic fluid ports of motor (7) connect；
Rotatary brake valve (9), its be arranged on described rotary buffering valve (8) and described brake (10) it
Between, for the pressure differential of two actuator ports according to rotary buffering valve (8), come described brake (10)
Control end apply control pressure,
Wherein, described pressure switch (6) detects the control pressure controlling end of described brake (10).
7. air-conditioning rotary system as claimed in claim 4, it is characterised in that described control device is core
The control unit (2) of sheet form, described control unit (2) and temperature sensor (11), pressure switch (6)
Electrical connection, and the signal fed back according to described temperature sensor (11) and pressure switch (6), control
Described airconditioning control valve (13).
8. air-conditioning rotary system as claimed in claim 6, it is characterised in that described control device is core
The control unit (2) of sheet form, described control unit (2) and temperature sensor (11), pressure switch (6)
Electrical connection, and the signal fed back according to described temperature sensor (11) and pressure switch (6), control
Described airconditioning control valve (13).
9. an engineering machinery, it is characterised in that include the sky as according to any one of claim 1-8
Adjust rotary system.
10. engineering machinery as claimed in claim 9, it is characterised in that described engineering machinery is wheeled
Crane.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610307487.7A CN106006387B (en) | 2016-05-11 | 2016-05-11 | A kind of air-conditioning rotary system and the engineering machinery with it |
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| CN201610307487.7A CN106006387B (en) | 2016-05-11 | 2016-05-11 | A kind of air-conditioning rotary system and the engineering machinery with it |
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| CN106006387B CN106006387B (en) | 2017-11-03 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106524347A (en) * | 2016-10-18 | 2017-03-22 | 国网山东省电力公司电力科学研究院 | High-voltage hot-line work robot insulating hopper hydraulic air-conditioning system and method |
| CN106515358A (en) * | 2016-10-18 | 2017-03-22 | 国网山东省电力公司电力科学研究院 | Hydraulic air-conditioner control system and method of insulated bucket |
| CN109292629A (en) * | 2018-10-26 | 2019-02-01 | 中船华南船舶机械有限公司 | A kind of crane Control in Hydraulic Rotation System |
| CN112498047A (en) * | 2019-09-16 | 2021-03-16 | 河北雷萨重型工程机械有限责任公司 | Crane air conditioner control system and crane |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112498047A (en) * | 2019-09-16 | 2021-03-16 | 河北雷萨重型工程机械有限责任公司 | Crane air conditioner control system and crane |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106006387B (en) | 2017-11-03 |
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Effective date of registration: 20200928 Address after: No.202 Xuanfu street, Xuanhua District, Zhangjiakou, Hebei Province Patentee after: Hebei Leisa Heavy Construction Machinery Co., Ltd Address before: 102206 Changping District City, Shahe, Sha Yang Road, Beijing Patentee before: BEIQI FOTON MOTOR Co.,Ltd. |