WO2012167505A1 - 底盘传动系统、工程车辆及其取力控制方法和系统 - Google Patents
底盘传动系统、工程车辆及其取力控制方法和系统 Download PDFInfo
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- WO2012167505A1 WO2012167505A1 PCT/CN2011/078529 CN2011078529W WO2012167505A1 WO 2012167505 A1 WO2012167505 A1 WO 2012167505A1 CN 2011078529 W CN2011078529 W CN 2011078529W WO 2012167505 A1 WO2012167505 A1 WO 2012167505A1
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- Prior art keywords
- transmission
- power take
- engine
- chassis
- power
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K17/00—Arrangement or mounting of transmissions in vehicles
- B60K17/28—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or type of power take-off
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
- B60Y2200/00—Type of vehicle
- B60Y2200/20—Off-Road Vehicles
- B60Y2200/24—Military vehicles
Definitions
- Chassis transmission system engineering vehicle and power take-off control method and system thereof
- the present invention relates to an engineering vehicle having a power take-off, and in particular to a chassis transmission system, a construction vehicle, and a power take-off control method and a power take-off control system. Background technique
- Engineering vehicles such as fire trucks, aerial work vehicles, cranes, etc.
- have additional operational functions in addition to the driving function that is, they have various functional mechanisms, such as pumps for water trucks, ladders, etc.
- the power input of the functional mechanism is usually provided by the engine flywheel force, the broken shaft force or the gearbox force.
- the full power power take-off is used to directly extract the force from the engine, so that all the transmission connections downstream of the engine will be disconnected when the force is taken.
- the broken shaft force is obtained by disposing the high power power take-off on the transmission shaft between the transmission and the rear axle, thereby disconnecting the transmission connection downstream of the transmission shaft when the force is taken.
- the gearbox force is set by placing the high-power power take-off on the power take-off port of the gearbox.
- part of the output of the engine of the engineering vehicle can be output through the high-power power take-off, and the other part can be used for traveling.
- the shaft breaking force or the gearbox force only one functional mechanism can be operated.
- the fire truck is in operation, it is necessary to stop at the accident rescue site and perform a sprinkler operation through a water pump installed on the fire truck. To this end, the pump needs to be supplied with the required input power through a high-power power take-off.
- the fire truck also needs to adjust the working position through a lifting mechanism such as a ladder.
- the ladder also needs to rely on another high-power power take-off to take power from the power output from the engine to drive.
- the input power can only be provided to one of the water pump and the ladder, regardless of the power of the broken shaft or the force taken by the transmission. Therefore, existing fire engines usually only have pumps (and their water guns) or ladders. In actual operation, they need to work together through two fire engines with pumps and ladders. Summary of the invention
- the problem to be solved by the present invention is to simultaneously provide power input to a plurality of functions in an engineering vehicle.
- the present invention provides a chassis transmission system including an interconnecting transmission and a transmission shaft, the transmission being coupled to an engine, wherein the transmission is mounted with a first power take-off a second power take-off is mounted on the drive shaft.
- the present invention also provides an engineering vehicle comprising the chassis transmission system of the present invention.
- the invention also provides a power take-off control method for a chassis transmission system, the method comprising:
- step (b) when the engine speed is lower than VI, separating the transmission from the engine and performing step (c); when the engine speed is higher than VI, causing the engine to slow down, repeating Perform step (a) and step (b);
- step (b') when the engine speed is lower than V2, separating the transmission from the engine and performing step (c') ; when the engine speed is higher than V2, causing the engine to slow down Repeat step (a') and step (b') ;
- the present invention also provides a power take-off control system, wherein the control system includes: a first sensor for detecting a rotational speed of the engine; a second sensor for detecting a separation or engagement state between the engine and the transmission; a third sensor for detecting a separation or engagement state between the first power take-off and the transmission, and the a separation or engagement state between the two power take-offs and the drive shaft;
- controller receiving a detection result of the first sensor and a signal of the third sensor, controlling separation and engagement between the transmission and the engine; the controller further receiving the second a signal of the sensor for controlling separation and engagement between the first power take-off and the transmission, and/or controlling separation and engagement between the second power take-off and the drive shaft, wherein :
- the controller When performing a power take-off operation: when the engine speed is lower than VI, the controller controls the transmission to be separated from the engine, and the second sensor sends the transmission device to the controller a signal separating the engine, the controller controlling the first power take-off to engage the transmission and/or controlling the second power take-off to engage the drive shaft, the third sensor to the a controller issues a signal that the first power take-off is engaged to the transmission and/or the second power take-off is engaged to the drive shaft, the controller controls the transmission to engage the engine; The controller causes the engine to slow down to below VI when the engine speed is higher than VI;
- the controller controls the transmission to be separated from the engine, and the second sensor sends the transmission to the controller a signal separate from the engine, the controller controls the first power take-off to be separate from the transmission and/or the second power take-off is separate from the transmission shaft, the third sensor is The controller issues a signal that the first power take-off is separate from the transmission and/or the second power take-off is separate from the drive shaft, the controller controls the transmission to engage the engine When the engine speed is higher than V2, the engine is decelerated to below V2
- the first power take-off and the second power take-off can be respectively adopted.
- Two actuators are driven to provide power input to multiple functions simultaneously in the construction vehicle.
- FIG. 1 is a schematic view showing the structure of a chassis transmission system of the present invention
- Figure 2 is a plan view of Figure 1;
- FIG. 3 is a flow chart illustrating the power take-off method of the present invention. Description of the reference numerals
- Second actuator 8a Front axle drive shaft 8b: Rear axle drive shaft
- orientation words such as “up, down, left, and right” as used herein generally refer to the upper, lower, left, and right as shown in the accompanying drawings; "inside and outside”. Means relative to The inside and outside of the outline of each component itself.
- the chassis transmission system of the present invention comprises a transmission device 1 and a transmission shaft connected to each other, the transmission device 1 is connected to the engine, wherein the transmission device 1 is mounted with a first power take-off 4, and the transmission shaft is mounted thereon. Second power take-off 5.
- the first power take-off 4 can be any suitable type of non-full power power take-off, that is, when the first power take-off 4 performs the force-taking operation, it does not affect the downstream drive.
- the second power take-off 5 can be any type of non-full power power take-off as long as the force can be taken through the drive shaft. Further, when the force taking operation is performed by the second power take-off 5, the second power take-off 5 will cause the drive shaft to be disconnected from the drive downstream of the second force take-up 5. Specifically, in an embodiment of the present invention, as shown in FIGS.
- the transmission shaft includes a first portion 2a and a second portion 2b, and the first portion 2a and the second portion 2b pass through
- the second power take-off 5 is connected, and the first portion 2a is connected to the transmission 1.
- the second power take-off 5 disconnects the first portion 2a and the second portion 2b, so that the first portion 2a drives the second power take-off 5 and passes through the second power take-off 5
- the power is output, and the second portion 2b and its downstream drive are disconnected. Since the power take-off and its mounting structure are well known in the art, they will not be described in detail herein.
- the chassis transmission system includes a first actuator 6 and a second actuator 7 that are operated by the first power take-off 4 and the second power take-off 5, respectively.
- the first power take-off device 4 and the second power take-off device 5 can be respectively used for the power taking operation to respectively output power to the first executing device 6 and the second executing device 7;
- the first power take-off 4 and the second power take-off 5 can also be operated in a force-taking operation to simultaneously output power to the first actuator 6 and the second actuator 7. The specific operations are explained in detail below.
- the first actuator 6 and the second actuator 7 are, for example, an oil pump and a water pump, respectively.
- the oil pump is used for a hydraulic mechanism (such as a ladder)
- the water pump is used for a water gun and the like, so that it can be used for a construction vehicle such as a fire truck.
- the first executing device 6 and the second executing device 7 can also be other high-power executing devices, so that it can be used to set other high power.
- the first power take-off 4 and the second power take-off 5 can each be connected to the transmission 1 and the transmission shaft respectively in a suitable manner.
- the first power take-off 4 and the second power take-off 5 can each pass an appropriate
- the method is detachably connected to the transmission device 1 and the transmission shaft, respectively, so as to be engaged or disengaged from the corresponding transmission device or the transmission shaft as needed to realize independent operation or cooperation of the first power take-off 4 and the second power take-off 5 operating.
- the first power take-off 4 may be provided with a first clutch to selectively engage or disengage the transmission 1 and/or the second power take-off 5
- a second clutch may be provided to selectively engage or disengage the drive shaft.
- the transmission device 1 is provided with a power take-off port 9, and the chassis transmission system includes a third power take-off (not shown) mounted on the power take-off port and is operated by the third power take-off A third actuator (not shown).
- the third power take-off can be a variety of suitable types of low power power take-offs, and the third actuator is a corresponding low power actuator.
- the transmission 1 can provide input power to the additional low power actuators.
- the third power take-off can be connected to the transmission 1 in a variety of suitable ways.
- the third power take-off can be always connected to the transmission 1 so that a small amount of power is always output through the third power take-off when the transmission 1 is engaged with the engine.
- the third power take-off is provided with a third clutch to selectively engage or disengage the transmission device 1 so as to be capable of performing a force operation independently of the first power take-off 4 and the second power take-off 5 Or, coordinate operation with the first power take-off 4 and the second power take-off 5 (ie, simultaneously take a force).
- the transmission 1 may be any suitable device disposed between the engine and the transmission shaft in the transmission structure of the undercarriage system.
- the transmission device 1 is a torque converter
- the torque converter generally includes a pump.
- the first power take-off 4 is mounted on a pump wheel of the torque converter.
- the torque converter may be a variety of torque converters suitable for use in an engineering vehicle and provided with a power take-off port, so that the first power take-off 4 can be conveniently mounted on the power take-off port.
- a torque converter of the type integrated with the first power take-off 4 can be selected, so that the structure of the undercarriage system of the present invention can be made more compact.
- the chassis transmission system further includes a shifting device 3 including a transmission connected downstream of the propeller shaft, and distributing power outputted from the transmission to the front of the construction vehicle Transfer case for bridge and rear axle. That is, unlike the existing gearbox integrated with the torque converter, the shifting device 3 of the present invention is disposed separately from the torque converter, thereby facilitating the arrangement of the first power take-off 4 and the second force. The device 5 also facilitates the arrangement of the transfer case. In use, the shifting device 3 can always receive power as long as the power taking operation is not performed by the second power take-off 5, and the power can be distributed to the front and rear axles of the vehicle through the transfer case.
- the gearbox and the transfer case can be constructed in a manner well known in the art and will not be described in detail herein.
- the present invention provides an engineering vehicle comprising the chassis transmission system of the present invention.
- the construction vehicle may be a construction vehicle provided with a plurality of actuators, such as a fire truck or an aerial work vehicle.
- the present invention also provides a power take-off control method for a chassis transmission system, the method comprising: (I) a power taking operation, the operation comprising: (a) detecting a rotational speed of the engine; (b) when the engine is When the rotational speed is lower than VI, the transmission device 1 is separated from the engine and step (c) is performed; when the rotational speed of the engine is higher than VI, the engine is decelerated, and steps (a) and steps are repeatedly performed. (b); (c) engaging the first power take-off 4 to the transmission 1 and/or engaging the second power take-off 5 to the drive shaft; (d) causing the transmission 1 engaging the engine;
- step ( ⁇ ) the operation of releasing the force, the operation comprising: (a') detecting the rotational speed of the engine; (b') when the rotational speed of the engine is lower than V2, causing the transmission 1 and the engine Separating and executing step (c') ; when the engine speed is higher than V2, decelerating the engine, repeating step (a') and step (b') ; (c') making the first A power take-off is disengaged from the transmission 1 and/or the second power take-off 5 is disengaged from the drive shaft; (d') engaging the transmission 1 with the engine.
- the rotational speed of the engine is first detected, and when the rotational speed of the engine is lower than VI (ie, the engine is low speed), the transmission 1 is separated from the engine and a second power take-off 5 is coupled to the drive shaft, and then the transmission 1 is engaged with the engine to complete a power take-off operation; when the engine speed is higher than VI, the engine is decelerated Below VI, the transmission 1 is then separated from the engine and the second power take-off 5 is engaged to the drive shaft, and finally the transmission 1 is engaged with the engine to complete the take-up Force operation.
- VI ie, the engine is low speed
- the rotational speed of the engine is first detected, and when the rotational speed of the engine is lower than V2, the transmission 1 is separated from the engine and the second power take-off 5 is Disconnecting the drive shaft, and then engaging the transmission device 1 with the engine; when the engine speed is higher than V2, the engine is decelerated to below V2, and then the transmission device 1 is The engine is disengaged and the second power take-off 5 is separated from the drive shaft, and finally the transmission 1 is engaged with the engine to complete the operation of relieving the force.
- the operation of separately taking the force taking operation and releasing the pulling force by the first power taking device 4 is similar to the above-described operation of separately taking the force taking operation and releasing the pulling force by the second power taking device 5, and no repeated explanation is given here.
- the first power take-off 4 does not involve the broken shaft operation, it is not necessary to consider whether the engine is in the operation of taking the force and releasing the force by the first power take-off 4 Low speed. In other words, it is also possible to perform the force taking operation and the lifting force taking operation at a high speed (for example, by the first clutch). Furthermore, it is even possible to always connect the first power take-off 4 to the transmission 1 . In this case, the power take-off operation (starting the power take-off output) or the force-taking operation (stopping the power take-off output) can be controlled by the power take-off switch of the first power take-off 4 itself.
- the transmission device 1 When the power taking operation is simultaneously performed by the first power take-off 4 and the second power take-off 5, the rotational speed of the engine is first detected, and when the rotational speed of the engine is lower than VI, the transmission device 1 is caused to Separating the engine and engaging the first power take-off 4 to the transmission 1 and engaging the second power take-off 5 to the drive shaft, and then engaging the transmission 1 with the engine.
- the transmission 1 is separated from the engine and the first power take-off 4 is coupled to the transmission 1 and engaging the second power take-off 5 to the drive shaft, and finally engaging the transmission 1 with the engine to complete the force taking operation.
- the rotational speed of the engine is first detected, and when the rotational speed of the engine is lower than V2, the transmission 1 is caused to Separating the engine and separating the first power take-off 4 from the transmission 1 and separating the second power take-off 5 from the drive shaft, and then engaging the transmission 1 with the engine
- the engine speed is higher than V2
- the engine is decelerated to below V2
- the transmission 1 is separated from the engine and the first power take-off 4 and the transmission 1 are Separating and separating the second power take-off 5 from the drive shaft, and finally engaging the transmission 1 with the engine to complete the operation of relieving the force.
- the power taking method of the present invention it can be first judged whether the engine is in a low speed or a stopped state, and then the engaging or separating power take-off (the first power take-off 4 and/or the second power take-off 5) is performed, thereby avoiding the use Damage to the components that engage the power take-off.
- the VI is 600-800 rpm and the V2 is 900-1400 rpm.
- the present invention also provides a power take-off control system, the power take-off control system comprising: a first sensor for detecting a rotational speed of the engine;
- a second sensor for detecting a separation or engagement state between the engine and the transmission 1; a third sensor for detecting a separation or engagement state between the first power take-off 4 and the transmission device 1 and a separation or engagement state between the second power take-off 5 and the transmission shaft; Receiving a detection result of the first sensor and a signal of the third sensor, controlling separation and engagement between the transmission 1 and the engine; the controller further receiving the second a signal of a sensor for controlling separation and engagement between the first power take-off 4 and the transmission 1 and/or controlling separation between the second power take-off 5 and the drive shaft Bonding, where:
- the controller When performing the power taking operation: when the engine speed is lower than VI, the controller controls the transmission device 1 to be separated from the engine, and the second sensor sends the transmission device 1 to the controller a signal separate from the engine, the controller controlling the first power take-off 4 to engage the transmission 1 and/or controlling the second power take-off 5 to engage the drive shaft, the a third sensor sends to the controller a signal that the first power take-off is engaged to the transmission 1 and/or the second power take-off 5 is engaged to the drive shaft, the controller controls the transmission The device 1 is engaged with the engine; when the engine speed is higher than VI, the controller causes the engine to slow down to below VI;
- the controller controls the transmission to be separated from the engine, and the second sensor sends the transmission to the controller a signal separate from the engine, the controller controls the first power take-off 4 to be separated from the transmission 1 and/or the second power take-off 5 is separated from the transmission shaft, the a third sensor sends a signal to the controller that the first power take-off is separate from the transmission and/or the second power take-off 5 is separate from the drive shaft, the controller controls the transmission 1 engaging the engine; when the engine speed is higher than V2, the controller causes the engine to slow down to below V2.
- the first sensor, the second sensor, and the third sensor may be various suitable types of sensors, or may be electronic components that transmit or receive various types of detection signals in the form of a bus between the electrical units, as long as the corresponding functions can be realized. can. That is, as long as the first sensor can Detecting the rotational speed of the engine and transmitting the detection result to the controller, the second sensor being capable of detecting the separation or engagement state of the engine and the transmission 1, and the third sensor being capable of detecting the detection between the first power take-off 4 and the transmission 1
- the separated or engaged state, and the separated or engaged state between the second power take-off 5 and the drive shaft may be.
- the controller can be a module with a control program for implementing the corresponding functions.
- the controller can include a control unit for implementing various specific operations, which can be, but is not limited to: a programmable logic controller that can communicate with the engine electronic control unit for signal processing and logic control ( PLC), computer control unit, single-chip microcomputer processor, etc.
- the controller may include a first clutch unit that controls engagement or disengagement of the transmission 1 with the engine (when the transmission 1 is a torque converter, the first clutch unit may be a control unit of the lockup clutch of the torque converter) And a second clutch that controls separation and engagement between the first power take-off 4 and the transmission 1 and/or controls separation and engagement between the second power take-off 5 and the drive shaft A unit (eg, a clutch control unit that controls the first clutch and the second clutch).
- a first clutch unit that controls engagement or disengagement of the transmission 1 with the engine (when the transmission 1 is a torque converter, the first clutch unit may be a control unit of the lockup clutch of the torque converter)
- a second clutch that controls separation and engagement between the first power take-off 4 and the transmission 1 and/or controls separation and engagement between the second power take-off 5 and the drive shaft
- a unit eg, a clutch control unit that controls the first clutch and the second clutch.
- the mechanical structure known in the art can be used to achieve the engagement and disengagement of the first power take-off 4 and the transmission 1 and to achieve the engagement and disengagement of the second power take-off 5 and the drive shaft, for example, using a force-taking cylinder, etc.
- Mechanical mechanism no detailed description here.
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Abstract
一种底盘传动系统、工程车辆及其取力控制方法和取力控制系统,所述底盘传动系统包括相互连接的传动装置(1)和传动轴(2a,2b),所述传动装置(1)连接到发动机,其中,所述传动装置(1)上安装有第一取力器(4),所述传动轴(2a,2b)上安装有第二取力器(5)。通过上述技术方案,当工程车辆需要同时驱动两个执行装置时,可以分别通过第一取力器(4)和第二取力器(5)来驱动两个执行装置,从而在工程车辆中对多种功能同时提供动力输入。
Description
底盘传动系统、 工程车辆及其取力控制方法和系统 技术领域
本发明涉及具有取力器的工程车辆, 具体地, 涉及底盘传动系统、 工 程车辆及其取力控制方法和取力控制系统。 背景技术
工程车辆 (例如消防车、 高空作业车、 起重机等) 除了具有行驶功能 之外还具有额外的可操作功能, 即具有各种功能机构, 如消防车的水泵、 云梯等。 现有技术中, 通常采用发动机飞轮取力、 断轴取力或者变速箱取 力对功能机构提供动力输入。 具体地, 发动机飞轮取力时, 使用全功率取 力器直接从发动机取力, 从而在取力时将断开发动机下游的所有传动连接。 断轴取力是通过将大功率取力器设置在变速箱和后桥之间的传动轴上, 从 而在取力时断开传动轴下游的传动连接。 断轴取力时, 工程车辆由于传动 连接断开而无法行驶。 变速箱取力是通过将大功率取力器设置在变速箱的 取力口上, 取力时工程车辆的发动机的输出一部分可以通过大功率取力器 输出, 另一部分可以用作行驶。 但是, 无论发动机飞轮取力、 断轴取力还 是变速箱取力, 都只能提供一种功能机构的运转。 消防车作业时, 需要在 事故救援地点停靠并通过安装在消防车上的水泵进行喷水灭火操作。 为此, 需要通过大功率取力器对水泵提供所需的输入动力。 另外, 消防车还需要 通过云梯等升降机构调整作业位置, 云梯同样需要依靠另一大功率取力器 从发动机输出的动力中取力以驱动。 但现有技术中, 无论断轴取力还是变 速箱取力, 都只能对水泵和云梯中的一个功能机构提供输入动力。 因此, 现有的消防车通常只带有水泵 (及其水枪) 或云梯, 实际作业时需要通过 分别带有水泵和云梯的两台消防车共同作业。
发明内容
本发明所要解决的问题是在工程车辆中对多种功能同时提供动力输 入。
为了实现上述目的, 本发明提供一种底盘传动系统, 该底盘传动系统 包括相互连接的传动装置和传动轴, 所述传动装置连接到发动机, 其中, 所述传动装置上安装有第一取力器, 所述传动轴上安装有第二取力器。
本发明还提供一种工程车辆, 该工程车辆包括本发明的底盘传动系统。 本发明还提供一种底盘传动系统的取力控制方法, 该方法包括:
(I) 取力操作, 该操作包括:
(a) 检测所述发动机的转速;
(b) 当所述发动机的转速低于 VI时, 使所述传动装置与所述发动机 分离并执行步骤(c); 当所述发动机的转速高于 VI时,使所述发动机降速, 重复执行步骤 (a) 和步骤 (b);
(c)使所述第一取力器接合到所述传动装置并且 /或者使所述第二取力 器接合到所述传动轴;
(d) 使所述传动装置与所述发动机接合;
以及 (Π) 解除取力的操作, 该操作包括:
(a' ) 检测所述发动机的转速;
(b' )当所述发动机的转速低于 V2时, 使所述传动装置与所述发动机 分离并执行步骤 (c' ); 当所述发动机的转速高于 V2 时, 使所述发动机降 速, 重复执行步骤 (a' ) 和步骤 (b' );
(C ) 使所述第一取力器与所述传动装置分离并且 /或者使所述第二取 力器与所述传动轴分离;
(d' ) 使所述传动装置与所述发动机接合。
本发明还提供一种取力控制系统, 其中, 所述控制系统包括: 第一传感器, 该第一传感器用于检测发动机的转速;
第二传感器, 用于检测所述发动机和传动装置之间的分离或接合状态; 第三传感器, 用于检测第一取力器和所述传动装置之间的分离或接合 状态, 以及所述第二取力器和所述传动轴之间的分离或接合状态;
控制器, 该控制器接收所述第一传感器的检测结果和所述第三传感器 的信号, 控制所述传动装置和所述发动机之间的分离和接合; 所述控制器 还接收所述第二传感器的信号, 用于控制所述第一取力器和所述传动装置 之间的分离和接合, 以及 /或者控制所述第二取力器和所述传动轴之间的分 离和接合, 其中:
在进行取力操作时: 当所述发动机的转速低于 VI时, 所述控制器控制 所述传动装置与所述发动机分离, 所述第二传感器向所述控制器发出所述 传动装置与所述发动机分离的信号, 所述控制器控制所述第一取力器接合 到所述传动装置并且 /或者控制所述第二取力器接合到所述传动轴, 所述第 三传感器向所述控制器发出所述第一取力器接合到所述传动装置并且 /或者 所述第二取力器接合到所述传动轴的信号, 所述控制器控制所述传动装置 与所述发动机接合; 当所述发动机的转速高于 VI时, 所述控制器使所述发 动机降速到 VI以下;
在进行解除取力的操作时: 当所述发动机的转速低于 V2时, 所述控制 器控制所述传动装置与所述发动机分离, 所述第二传感器向所述控制器发 出所述传动装置与所述发动机分离的信号, 所述控制器控制所述第一取力 器与所述传动装置分离并且 /或者所述第二取力器与所述传动轴分离, 所述 第三传感器向所述控制器发出所述第一取力器与所述传动装置分离并且 /或 者所述第二取力器与所述传动轴分离的信号, 所述控制器控制所述传动装 置与所述发动机接合; 当所述发动机的转速高于 V2时, 使所述发动机降速 到 V2以下
通过上述技术方案, 当工程车辆需要同时驱动两个执行装置 (例如消 防车同时使用水泵和云梯) 时, 可以分别通过第一取力器和第二取力器来
驱动两个执行装置, 从而在工程车辆中对多种功能同时提供动力输入。 本发明的其他特征和优点将在随后的具体实施方式部分予以详细说 明。 附图说明
附图是用来提供对本发明的进一步理解, 并且构成说明书的一部分, 与下面的具体实施方式一起用于解释本发明, 但并不构成对本发明的限制。 在附图中:
图 1是说明本发明的底盘传动系统的结构示意图;
图 2是图 1的俯视图;
图 3是说明本发明的取力方法的流程图。 附图标记说明
1: 传动装置
2a: 第一部分 2b: 第二部分
3: 变速装置 4: 第一取力器 第二取力器
6: 第一执行装置 6a: 连接轴 第二执行装置 8a: 前桥传动轴 8b: 后桥传动轴
9: 取力口 具体实施方式
以下结合附图对本发明的具体实施方式进行详细说明。应当理解的是, 此处所描述的具体实施方式仅用于说明和解释本发明, 并不用于限制本发 明。
在本发明中, 在未作相反说明的情况下, 使用的方位词如 "上、 下、 左、 右"通常是指参考附图所示的上、 下、 左、 右; "内、 外"是指相对于
各部件本身的轮廓的内、 夕卜。
本发明的底盘传动系统包括相互连接的传动装置 1 和传动轴, 所述传 动装置 1连接到发动机, 其中, 所述传动装置 1上安装有第一取力器 4, 所 述传动轴上安装有第二取力器 5。
第一取力器 4可以是各种适当类型的非全功率取力器, 即通过第一取 力器 4进行取力操作时, 并不影响其下游的传动。 第二取力器 5可以是各 种类型的非全功率取力器, 只要能够通过传动轴取力即可。 另外, 在通过 第二取力器 5进行取力操作时, 第二取力器 5将使所述传动轴断开第二取 力器 5下游的传动。 具体地, 在本发明的一种实施方式中, 如图 1和图 2 所示, 所述传动轴包括第一部分 2a和第二部分 2b, 所述第一部分 2a和所 述第二部分 2b通过所述第二取力器 5连接, 所述第一部分 2a与所述传动 装置 1连接。 第二取力器 5进行取力操作时, 第二取力器 5使得第一部分 2a和第二部分 2b断开连接, 从而第一部分 2a带动第二取力器 5并通过第 二取力器 5输出动力, 而第二部分 2b及其下游的传动被断开。 由于取力器 及其安装结构是本领域公知的, 因而在此不做详细说明。
另外, 优选地, 所述底盘传动系统包括分别通过所述第一取力器 4和 所述第二取力器 5取力运转的第一执行装置 6和第二执行装置 7。通过本发 明的技术方案, 一方面, 可以分别使用第一取力器 4和第二取力器 5进行 取力操作, 从而分别向第一执行装置 6和第二执行装置 7输出动力; 另一 方面, 也可以使第一取力器 4和第二取力器 5—起进行取力操作, 从而同 时向第一执行装置 6和第二执行装置 7输出动力。 具体操作在下文中详细 说明。
更优选地, 第一执行装置 6和第二执行装置 7例如分别为油泵和水泵。 其中, 油泵用于液压机构 (例如云梯), 水泵用于水枪等机构, 从而能够用 于消防车等工程车辆。 可以理解的是, 所述第一执行装置 6和所述第二执 行装置 7 也可以是其他大功率执行装置, 从而能够用于设置有其他大功率
执行装置的各种工程车辆。
第一取力器 4和第二取力器 5可以各自通过适当的方式分别与传动装 置 1和传动轴连接, 优选地, 第一取力器 4和第二取力器 5可以各自通过 适当的方式分别与传动装置 1 和传动轴可分离地连接, 从而能够根据需要 与相应的传动装置或传动轴接合或分离, 以实现第一取力器 4和第二取力 器 5的独立操作或协同操作。
在本发明的一种优选实施方式中, 所述第一取力器 4可以设置有第一 离合器以可选择地与所述传动装置 1接合或分离, 以及 /或者所述第二取力 器 5可以设置有第二离合器以可选择地与所述传动轴接合或分离。
优选地,所述传动装置 1上设置有取力口 9,所述底盘传动系统包括安 装于该取力口的第三取力器 (未显示) 和通过该第三取力器取力运转的第 三执行装置 (未显示)。 第三取力器可以是各种适当类型的小功率取力器, 第三执行装置为相应的小功率执行装置。 通过这种布置, 所述传动装置 1 上可以对额外的小功率执行装置提供输入动力。
此外, 第三取力器可以通过各种适当的方式与传动装置 1连接。 例如, 可以使第三取力器始终与传动装置 1连接, 从而在传动装置 1与发动机传 动接合时始终通过第三取力器输出小额功率。 优选地, 所述第三取力器设 置有第三离合器以可选择地与所述传动装置 1 接合或分离, 从而能够独立 于第一取力器 4和第二取力器 5进行取力操作, 或者与第一取力器 4和第 二取力器 5进行协调操作 (即同时取力)。
传动装置 1 可以是底盘系统的传动结构中设置在发动机和所述传动轴 之间的各种适当装置, 优选地, 所述传动装置 1 为液力变矩器, 液力变矩 器通常包括泵轮、 涡轮和导轮, 其中, 泵轮、 涡轮和导轮分别与输入轴、 输出轴和壳体相连接。 更优选地, 所述第一取力器 4安装在所述液力变矩 器的泵轮上。 此外, 所述液力变矩器可以是各种适于工程车辆使用并设置 有取力口的液力变矩器, 从而可以方便地将第一取力器 4安装在该取力口
上。 更优选地, 可以选择集成有第一取力器 4 的类型的液力变矩器, 从而 能够使本发明的底盘系统的结构更加紧凑。
另外, 优选地, 所述底盘传动系统还包括变速装置 3, 该变速装置 3 包括在下游连接于所述传动轴的变速箱, 以及将所述变速箱输出的动力分 配至所述工程车辆的前桥和后桥的分动箱。 也就是说, 与现有的集成有液 力变矩器的变速箱不同, 本发明的变速装置 3 与液力变矩器分体设置, 从 而便于布置第一取力器 4和第二取力器 5并有利于分动箱的布置。 使用时, 只要没有通过第二取力器 5进行取力操作, 变速装置 3始终能够接收动力, 并能够通过分动箱将动力分配至车辆的前桥和后桥。 变速箱和分动箱可以 采用本领域公知的结构, 在此不做详细说明。
另外, 本发明还提供一种工程车辆, 该工程车辆包括本发明的底盘传 动系统。 所述工程车辆可以是消防车、 高空作业车等设置有多个执行装置 的工程车辆。
此外, 本发明还提供一种底盘传动系统的取力控制方法, 该方法包括: (I) 取力操作, 该操作包括: (a) 检测所述发动机的转速; (b) 当所 述发动机的转速低于 VI时,使所述传动装置 1与所述发动机分离并执行步 骤(c); 当所述发动机的转速高于 VI时, 使所述发动机降速, 重复执行步 骤(a)和步骤(b); (c) 使所述第一取力器 4接合到所述传动装置 1并且 / 或者使所述第二取力器 5接合到所述传动轴; (d) 使所述传动装置 1与所 述发动机接合;
以及 (Π) 解除取力的操作, 该操作包括: (a' ) 检测所述发动机的转 速; (b' ) 当所述发动机的转速低于 V2时, 使所述传动装置 1与所述发动 机分离并执行步骤 (c' ); 当所述发动机的转速高于 V2 时, 使所述发动机 降速, 重复执行步骤 (a' ) 和步骤 (b' ); (c' ) 使所述第一取力器与所述传 动装置 1分离并且 /或者使所述第二取力器 5与所述传动轴分离; (d' )使所 述传动装置 1与所述发动机接合。
具体地, 下面以单独通过第二取力器 5进行取力操作来说明分别通过 第一取力器 4和第二取力器 5进行的独立取力和解除取力操作。 在取力操 作时, 如图 3所示, 首先检测所述发动机的转速, 当所述发动机的转速低 于 VI (即发动机低速) 时, 使所述传动装置 1与所述发动机分离并使所述 第二取力器 5接合到所述传动轴, 然后使所述传动装置 1与所述发动机接 合, 从而完成取力操作; 当所述发动机的转速高于 VI时, 使所述发动机降 速到 VI以下,然后再使所述传动装置 1与所述发动机分离并使所述第二取 力器 5接合到所述传动轴, 最后使所述传动装置 1与所述发动机接合, 从 而完成取力操作。 在进行解除取力的操作时, 首先检测所述发动机的转速, 当所述发动机的转速低于 V2时,使所述传动装置 1与所述发动机分离并使 所述第二取力器 5与所述传动轴分离, 然后使所述传动装置 1与所述发动 机接合; 当所述发动机的转速高于 V2时, 使所述发动机降速到 V2以下, 然后再使所述传动装置 1与所述发动机分离并使所述第二取力器 5与所述 传动轴分离, 最后使所述传动装置 1 与所述发动机接合, 从而完成解除取 力的操作。
通过第一取力器 4单独进行取力操作和解除取力的操作与上述通过第 二取力器 5单独进行取力操作和解除取力的操作类似, 在此不做重复说明。
本领域技术人员可以理解的是, 由于第一取力器 4并不涉及断轴操作, 因而在通过第一取力器 4进行取力操作和解除取力的操作时, 可以不必考 虑发动机是否处于低速。 换言之, 在高速情况下也可以 (例如通过第一离 合器) 进行取力操作和解除取力的操作。 此外, 甚至可以使第一取力器 4 始终与传动装置 1传动连接。 在这种情况下, 可以通过第一取力器 4本身 的取力开关来控制进行取力操作 (开始取力输出) 或解除取力操作 (停止 取力输出)。
当同时通过第一取力器 4和第二取力器 5进行取力操作时, 首先检测 所述发动机的转速, 当所述发动机的转速低于 VI时, 使所述传动装置 1与
所述发动机分离并使所述第一取力器 4接合到所述传动装置 1并且使所述 第二取力器 5接合到所述传动轴, 然后使所述传动装置 1与所述发动机接 合; 当所述发动机的转速高于 VI时, 使所述发动机降速到 VI以下, 然后 使所述传动装置 1与所述发动机分离并使所述第一取力器 4接合到所述传 动装置 1并且使所述第二取力器 5接合到所述传动轴, 最后使所述传动装 置 1与所述发动机接合, 从而完成取力操作。
当同时通过第一取力器 4和第二取力器 5进行解除取力的操作时, 首 先检测所述发动机的转速, 当所述发动机的转速低于 V2时, 使所述传动装 置 1与所述发动机分离并使所述第一取力器 4与所述传动装置 1分离并且 使所述第二取力器 5与所述传动轴分离, 然后使所述传动装置 1与所述发 动机接合;当所述发动机的转速高于 V2时,使所述发动机降速到 V2以下, 然后使所述传动装置 1与所述发动机分离并使所述第一取力器 4与所述传 动装置 1分离并且使所述第二取力器 5与所述传动轴分离, 最后使所述传 动装置 1与所述发动机接合, 从而完成解除取力的操作。
通过本发明的取力方法, 可以首先判断发动机是否处于低速或者停转 状态, 然后执行接合或分离取力器 (第一取力器 4和 /或第二取力器 5 ), 从 而避免对用于接合取力器的部件造成损伤。
优选地, VI为 600-800rpm, V2为 900-1400rpm。
根据需要, 也可以使第一取力器 4与传动装置 1接合的状态为常态, 从而当传动装置 1与发动机接合时, 即通过第一取力器 4输出动力。 在这 种情况下, 只要第二取力器 5 没有进行取力操作, 则不会影响车辆的正常 行驶。
此外, 本发明还提供一种取力控制系统, 该取力控制系统包括: 第一传感器, 该第一传感器用于检测发动机的转速;
第二传感器, 用于检测所述发动机和传动装置 1 之间的分离或接合状 态;
第三传感器, 用于检测第一取力器 4和所述传动装置 1之间的分离或 接合状态, 以及所述第二取力器 5和所述传动轴之间的分离或接合状态; 控制器, 该控制器接收所述第一传感器的检测结果和所述第三传感器 的信号, 控制所述传动装置 1 和所述发动机之间的分离和接合; 所述控制 器还接收所述第二传感器的信号, 用于控制所述第一取力器 4和所述传动 装置 1之间的分离和接合, 以及 /或者控制所述第二取力器 5和所述传动轴 之间的分离和接合, 其中:
在进行取力操作时: 当所述发动机的转速低于 VI时, 所述控制器控制 所述传动装置 1 与所述发动机分离, 所述第二传感器向所述控制器发出所 述传动装置 1与所述发动机分离的信号,所述控制器控制所述第一取力器 4 接合到所述传动装置 1并且 /或者控制所述第二取力器 5接合到所述传动轴, 所述第三传感器向所述控制器发出所述第一取力器接合到所述传动装置 1 并且 /或者所述第二取力器 5接合到所述传动轴的信号, 所述控制器控制所 述传动装置 1与所述发动机接合; 当所述发动机的转速高于 VI时, 所述控 制器使所述发动机降速到 VI以下;
在进行解除取力的操作时: 当所述发动机的转速低于 V2时, 所述控制 器控制所述传动装置与所述发动机分离, 所述第二传感器向所述控制器发 出所述传动装置 1 与所述发动机分离的信号, 所述控制器控制所述第一取 力器 4与所述传动装置 1分离并且 /或者所述第二取力器 5与所述传动轴分 离, 所述第三传感器向所述控制器发出所述第一取力器与所述传动装置分 离并且 /或者所述第二取力器 5与所述传动轴分离的信号, 所述控制器控制 所述传动装置 1与所述发动机接合; 当所述发动机的转速高于 V2时, 所述 控制器使所述发动机降速到 V2以下。
其中, 第一传感器、 第二传感器和第三传感器可以是各种适当类型的 传感器, 也可以是各电气单元间以总线形式发送或接收各类检测信号的电 子元件, 只要能够实现相应的功能即可。 也就是说, 只要第一传感器能够
检测发动机的转速并将检测结果发送给控制器, 第二传感器能够检测发动 机和传动装置 1的分离或接合状态,第三传感器能够检测检测第一取力器 4 和所述传动装置 1之间的分离或接合状态, 以及所述第二取力器 5和所述 传动轴之间的分离或接合状态即可。
另外, 控制器可以是具有控制程序以用于实现相应功能的模块。 例如, 控制器可以包括用于实现各种具体操作的控制单元, 所述控制单元可以是 (但不限于): 可与发动机电控单元通讯并进行信号处理和逻辑控制的可编 程逻辑控制器 (PLC)、 计算机控制单元、 单片微型机处理器等。 控制器可 以包括控制传动装置 1 与发动机的接合或分离的第一离合单元 (当传动装 置 1 为液力变矩器时, 第一离合单元可以是液力变矩器的锁止离合器的控 制单元) 和控制所述第一取力器 4和所述传动装置 1之间的分离和接合以 及 /或者控制所述第二取力器 5和所述传动轴之间的分离和接合的第二离合 单元 (例如控制第一离合器和第二离合器的离合器控制单元)。
此外, 可以采用本领域公知的机械结构来实现第一取力器 4和传动装 置 1 的接合和分离以及用于实现第二取力器 5和传动轴的接合和分离, 例 如使用取力气缸等机械机构, 在此不做详细说明。
以上结合附图详细描述了本发明的优选实施方式, 但是, 本发明并不 限于上述实施方式中的具体细节, 在本发明的技术构思范围内, 可以对本 发明的技术方案进行多种简单变型, 这些简单变型均属于本发明的保护范 围。
另外需要说明的是, 在上述具体实施方式中所描述的各个具体技术特 征, 在不矛盾的情况下, 可以通过任何合适的方式进行组合。 为了避免不 必要的重复, 本发明对各种可能的组合方式不再另行说明。
此外, 本发明的各种不同的实施方式之间也可以进行任意组合, 只要 其不违背本发明的思想, 其同样应当视为本发明所公开的内容。
Claims
1、 底盘传动系统, 该底盘传动系统包括相互连接的传动装置 (1 ) 和 传动轴, 所述传动装置(1 )连接到发动机, 其特征在于,所述传动装置(1 ) 上安装有第一取力器 (4), 所述传动轴上安装有第二取力器 (5 )。
2、 根据权利要求 1所述的底盘传动系统, 其中, 所述传动轴包括第一 部分 (2a) 和第二部分 (2b), 所述第一部分 (2a) 和所述第二部分 (2b ) 通过所述第二取力器 (5 ) 连接, 所述第一部分 (2a) 与所述传动装置 (1 ) 连接。
3、 根据权利要求 1所述的底盘传动系统, 其中, 所述底盘传动系统包 括分别通过所述第一取力器 (4 ) 和所述第二取力器 (5 ) 取力运转的第一 执行装置 (6) 和第二执行装置 (7)。
4、根据权利要求 3所述的底盘传动系统,其中,所述第一执行装置(6) 和所述第二执行装置 (7 ) 分别为油泵和水泵。
5、 根据权利要求 4所述的底盘传动系统, 其中, 所述传动装置 (1 ) 上设置有取力口 (9), 所述底盘传动系统包括安装于该取力口 (9) 的第三 取力器和通过该第三取力器取力运转的第三执行装置。
6、 根据权利要求 5所述的底盘传动系统, 其中, 所述第三取力器设置 有第三离合器以可选择地与所述传动装置 (1 ) 接合或分离。
7、 根据权利要求 1所述的底盘传动系统, 其中, 所述第一取力器 (4 ) 设置有第一离合器以可选择地与所述传动装置(1 )接合或分离, 以及 /或者 所述第二取力器(5 ) 设置有第二离合器以可选择地与所述传动轴接合或分
8、 根据权利要求 1-7中任意一项所述的底盘传动系统, 其中, 所述传 动装置 (1 ) 为液力变矩器, 所述第一取力器 (4) 安装在所述液力变矩器 的泵轮上。
9、 根据权利要求 8所述的底盘传动系统, 其中, 所述底盘传动系统还 包括变速装置 (3 ), 该变速装置 (3 )包括在下游连接于所述传动轴的变速 箱以及用于将所述变速箱输出的动力分配至所述工程车辆的前桥和后桥的 分动箱。
10、工程车辆, 其特征在于, 该工程车辆包括权利要求 1-9中任意一项 所述的底盘传动系统。
11、 根据权利要求 1 所述的底盘传动系统的取力控制方法, 该方法包 括:
(I) 取力操作, 该操作包括:
(a) 检测所述发动机的转速;
(b)当所述发动机的转速低于 VI时, 使所述传动装置与所述发动 机分离并执行步骤(c); 当所述发动机的转速高于 VI时, 使所述发动机降 速, 重复执行步骤 (a) 和步骤 (b);
(c) 使所述第一取力器接合到所述传动装置并且 /或者使所述第二 取力器接合到所述传动轴;
( d ) 使所述传动装置与所述发动机接合; 以及 (π) 解除取力的操作, 该操作包括:
(a' ) 检测所述发动机的转速;
(b' ) 当所述发动机的转速低于 V2时, 使所述传动装置与所述发 动机分离并执行步骤 (c' ); 当所述发动机的转速高于 V2 时, 使所述发动 机降速, 重复执行步骤 (a' ) 和步骤 (b' );
(C )使所述第一取力器与所述传动装置分离并且 /或者使所述第二 取力器与所述传动轴分离;
(d' ) 使所述传动装置与所述发动机接合。
12、 根据权利要求 11所述的方法, 其中, VI 为 600-800rpm, V2为 900-1400rpm。
13、 取力控制系统, 其特征在于, 所述控制系统包括:
第一传感器, 该第一传感器用于检测发动机的转速;
第二传感器, 用于检测所述发动机和传动装置之间的分离或接合状态; 第三传感器, 用于检测第一取力器和所述传动装置之间的分离或接合 状态, 以及所述第二取力器和所述传动轴之间的分离或接合状态;
控制器, 该控制器接收所述第一传感器的检测结果和所述第三传感器 的信号, 控制所述传动装置和所述发动机之间的分离和接合; 所述控制器 接还收所述第二传感器的信号, 控制所述第一取力器和所述传动装置之间 的分离和接合, 以及 /或者控制所述第二取力器和所述传动轴之间的分离和 接合, 其中:
在进行取力操作时: 当所述发动机的转速低于 VI时, 所述控制器控制 所述传动装置与所述发动机分离, 所述第二传感器向所述控制器发出所述 传动装置与所述发动机分离的信号, 所述控制器控制所述第一取力器接合 到所述传动装置并且 /或者控制所述第二取力器接合到所述传动轴, 所述第 三传感器向所述控制器发出所述第一取力器接合到所述传动装置并且 /或者 所述第二取力器接合到所述传动轴的信号, 所述控制器控制所述传动装置 与所述发动机接合; 当所述发动机的转速高于 VI时, 所述控制器使所述发 动机降速到 VI以下;
在进行解除取力的操作时: 当所述发动机的转速低于 V2时, 所述控制 器控制所述传动装置与所述发动机分离, 所述第二传感器向所述控制器发 出所述传动装置与所述发动机分离的信号, 所述控制器控制所述第一取力 器与所述传动装置分离并且 /或者所述第二取力器与所述传动轴分离, 所述 第三传感器向所述控制器发出所述第一取力器与所述传动装置分离并且 /或 者所述第二取力器与所述传动轴分离的信号, 所述控制器控制所述传动装 置与所述发动机接合; 当所述发动机的转速高于 V2时, 使所述发动机降速 到 V2以下。
14、 根据权利要求 13所述的取力控制系统, 其中, VI为 600-800rpm, V2为 900-1400rpm。
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| US9290092B2 (en) * | 2013-06-11 | 2016-03-22 | GM Global Technology Operations LLC | Chain drive power take off for hydraulic pump |
| CN103692905B (zh) * | 2013-12-12 | 2017-02-15 | 中联重科股份有限公司 | 一种汽车起重机及其控制方法 |
| CN105480088A (zh) * | 2015-12-01 | 2016-04-13 | 湖南三一路面机械有限公司 | 车载泵 |
| CN108162710A (zh) * | 2017-12-28 | 2018-06-15 | 贵州凯星液力传动机械有限公司 | 一种悬架的控制方法 |
| CN108609050A (zh) * | 2018-07-06 | 2018-10-02 | 三江瓦力特特种车辆有限公司 | 一种用于承载全液压顶驱钻机的底盘车 |
| CN112455224B (zh) * | 2020-11-27 | 2022-03-22 | 三一汽车起重机械有限公司 | 一种分动箱、底盘总成及起重机 |
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| CN102294956B (zh) | 2013-07-31 |
| CN103419631B (zh) | 2016-01-13 |
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