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1. 发明授权

US09561789B2 Hybrid work vehicle 有权
标题翻译：混合动力车
公开(公告)号：US09561789B2
公开(公告)日：2017-02-07
申请号：US14000430
申请日：2012-08-27
申请人： Keishiro Nishi , Hidetoshi Hana , Atsushi Shinkai , Hisao Mukai , Michita Kono , Yushi Matsuzaki , Yoshitomo Fujimoto , Susumu Umemoto , Shigeki Hayashi , Norio Obata , Toshikazu Kawamoto , Nobushige Ichikawa
发明人： Keishiro Nishi , Hidetoshi Hana , Atsushi Shinkai , Hisao Mukai , Michita Kono , Yushi Matsuzaki , Yoshitomo Fujimoto , Susumu Umemoto , Shigeki Hayashi , Norio Obata , Toshikazu Kawamoto , Nobushige Ichikawa
IPC分类号： B60W20/00 , B60W10/08 , B60W10/06 , B60K6/485 , B60W10/02
CPC分类号： B60W20/10 , B60K6/485 , B60W10/02 , B60W10/06 , B60W10/08 , B60W20/19 , B60W2300/152 , B60W2510/0657 , B60W2710/0644 , B60W2710/083 , B60Y2200/411 , Y02T10/6226 , Y10S903/93
摘要： A hybrid work vehicle is provided with an internal combustion engine for supplying driving force to a running device and a work implement via a transmission shaft, a motor generator for assisting the internal combustion engine by outputting power to the transmission shaft, and a battery for receiving charging electricity from the motor generator and giving driving electricity to the motor generator. A load information generation unit generates load information indicating a rotational load received by the internal combustion engine when in a constant-speed control mode for maintaining a constant number of revolutions of the internal combustion engine, based on an input parameter, and an assistance calculation unit calculates an amount of assistance for internal combustion engine by the motor generator, based on the load information when in the constant-speed control mode.
摘要翻译：混合作业车辆设置有内燃机，其用于通过传动轴向行驶装置和作业工具提供驱动力，通过向传动轴输出功率来辅助内燃机的电动发电机和用于接收的电池从电动发电机充电并向电动发电机供电。负载信息生成单元，基于输入参数，生成表示内燃机接收到的旋转载荷的载荷信息，该恒定速度控制模式用于维持内燃机的恒定转数，辅助计算单元基于在恒速控制模式下的负载信息，由电动发电机计算内燃机的辅助量。

2. 发明申请

US20140148984A1 Hybrid Work Vehicle 有权
标题翻译：混合动力车
公开(公告)号：US20140148984A1
公开(公告)日：2014-05-29
申请号：US14000430
申请日：2012-08-27
申请人： Keishiro Nishi , Hidetoshi Hana , Atsushi Shinkai , Hisao Mukai , Michita Kono , Yushi Matsuzaki , Yoshitomo Fujimoto , Susumu Umemoto , Shigeki Hayashi , Norio Obata , Toshikazu Kawamoto , Nobushige Ichikawa
发明人： Keishiro Nishi , Hidetoshi Hana , Atsushi Shinkai , Hisao Mukai , Michita Kono , Yushi Matsuzaki , Yoshitomo Fujimoto , Susumu Umemoto , Shigeki Hayashi , Norio Obata , Toshikazu Kawamoto , Nobushige Ichikawa
IPC分类号： B60W20/00 , B60W10/08 , B60W10/06
CPC分类号： B60W20/10 , B60K6/485 , B60W10/02 , B60W10/06 , B60W10/08 , B60W20/19 , B60W2300/152 , B60W2510/0657 , B60W2710/0644 , B60W2710/083 , B60Y2200/411 , Y02T10/6226 , Y10S903/93
摘要： A hybrid work vehicle is provided with an internal combustion engine for supplying driving force to a running device and a work implement via a transmission shaft, a motor generator for assisting the internal combustion engine by outputting power to the transmission shaft, and a battery for receiving charging electricity from the motor generator and giving driving electricity to the motor generator. A load information generation unit generates load information indicating a rotational load received by the internal combustion engine when in a constant-speed control mode for maintaining a constant number of revolutions of the internal combustion engine, based on an input parameter, and an assistance calculation unit calculates an amount of assistance for internal combustion engine by the motor generator, based on the load information when in the constant-speed control mode.
摘要翻译：混合作业车辆设置有内燃机，其用于通过传动轴向行驶装置和作业工具提供驱动力，通过向传动轴输出功率来辅助内燃机的电动发电机和用于接收的电池从电动发电机充电并向电动发电机供电。负载信息生成单元，基于输入参数，生成表示内燃机接收到的旋转载荷的载荷信息，该恒定速度控制模式用于维持内燃机的恒定转数，辅助计算单元基于在恒速控制模式下的负载信息，由电动发电机计算内燃机的辅助量。

3. 发明申请

US20070068152A1 Load control structure for work vehicle 有权
标题翻译：工作车辆负载控制结构
公开(公告)号：US20070068152A1
公开(公告)日：2007-03-29
申请号：US11520457
申请日：2006-09-13
申请人： Eiji Nishi , Keishiro Nishi , Atsushi Shinkai , Yasunobu Nakatani , Muneji Okamoto , Yoichi Sugihara
发明人： Eiji Nishi , Keishiro Nishi , Atsushi Shinkai , Yasunobu Nakatani , Muneji Okamoto , Yoichi Sugihara
IPC分类号： F16D39/00
CPC分类号： F16H61/46 , F16H59/18 , F16H59/42 , F16H61/423 , F16H61/433 , F16H61/462 , F16H2059/147 , F16H2059/6853
摘要： A load control structure for a work vehicle comprises: a device for detecting operating position of a manually operated speed change operating element; an engine load detection device for detecting load on an engine of the work vehicle; a swash plate position detecting device for detecting an operating position of a swash plate of a variable displacement pump of a hydrostatic continuously variable speed change device; a pump operating device for steplessly operating the swash plate of the variable displacement pump; a motor operating device for operating a swash plate of a variable displacement motor of the hydrostatic continuously variable speed change device between at least two speed change positions including a higher speed position and a lower speed position; a control device for controlling the operations of the pump operating device and the motor operating device. The control device has a automatic pump swash plate control device for controlling the operation of the pump operating device, based on detected information from the load detection device and detected information from the swash plate position detecting device, such that the greater an engine load is, greater is the extent to which the swash plate of the variable displacement pump is operated to a low speed side; and a motor swash plate control device for controlling the motor operating device so as to change the position of the swash plate of the variable displacement motor between the at least two speed change positions.
摘要翻译：一种用于工作车辆的负载控制结构包括：用于检测手动操作的变速操作元件的操作位置的装置; 发动机负载检测装置，用于检测作业车辆的发动机的负荷; 旋转斜盘位置检测装置，用于检测静液压无级变速装置的可变排量泵的斜板的操作位置; 用于无级操作可变排量泵的斜盘的泵操作装置; 电动机操作装置，用于在包括较高速度位置和较低速度位置的至少两个变速位置之间操作所述静液压无级变速装置的可变排量电动机的斜盘; 用于控制泵操作装置和马达操作装置的操作的控制装置。控制装置具有自动泵斜盘控制装置，用于基于来自负载检测装置的检测信息和来自斜盘位置检测装置的检测信息来控制泵操作装置的操作，使得发动机负荷越大，变容量泵的旋转斜盘操作到低速侧的程度越大; 以及电动机斜盘控制装置，用于控制电动机操作装置，以便在至少两个变速位置之间改变可变容量电动机的斜板的位置。

4. 发明授权

US07980994B2 Speed control structure and method for work vehicle 有权
标题翻译：工作车辆速度控制结构及方法
公开(公告)号：US07980994B2
公开(公告)日：2011-07-19
申请号：US12712541
申请日：2010-02-25
申请人： Eiji Nishi , Keishiro Nishi , Atsushi Shinkai , Yasunobu Nakatani
发明人： Eiji Nishi , Keishiro Nishi , Atsushi Shinkai , Yasunobu Nakatani
IPC分类号： B60W10/04 , F16H61/40 , F16D31/02 , G06F7/00
CPC分类号： B60W10/11 , B60W10/06 , F16H47/02 , F16H59/42 , F16H61/423 , F16H61/433 , F16H61/46 , F16H61/462 , F16H2059/6853 , Y10T74/19153 , Y10T477/631 , Y10T477/636 , Y10T477/676 , Y10T477/688
摘要： A load control structure for a work vehicle comprises: set rotation speed detection device for detecting a set rotation of an engine of the work vehicle; actual rotation speed detection device that senses an actual rotational speed of the engine; continuously variable speed change device that receives power from an engine of the work vehicle; speed change position detecting device for detecting a speed change operation position of the continuously variable speed change device; operating device for speed-shifting the continuously variable speed change device; control device for controlling the operation of the operating device; wherein the control device calculates a drop amount of the actual engine rotation speed from the set rotation speed based on the detected information from the set rotation speed detection device and the actual rotation speed detection device, and sets a limit operation position for the continuously variable speed change device based on the calculated drop amount and a correlation data that correlates the actual engine rotation speeds with operating positions of the continuously variable speed change device, and controls the operating device such that the operating position of the continuously variable speed change device moves to the limit operating position based on the set limit operating position and detected information from the speed change position detecting device, and wherein the control device has command device for commanding a change of the correlation data.
摘要翻译：一种工作车辆的负载控制结构，具备：检测作业车辆的发动机的设定旋转的设定转速检测装置; 感测发动机的实际转速的实际转速检测装置; 从工作车辆的发动机接收动力的无级变速装置; 速度变化位置检测装置，用于检测无级变速装置的变速操作位置; 用于变速无级变速装置的操作装置; 用于控制操作装置的操作的控制装置; 其特征在于，所述控制装置基于来自所设定的转速检测装置和实际转速检测装置的检测信息，根据所设定的转速来计算实际发动机转速的下降量，并设定所述连续变速的极限动作位置基于所计算的液滴量的变更装置和将实际的发动机转速与无级变速装置的动作位置相关联的相关数据，并且控制操作装置，使得连续变速装置的运转位置向基于所设定的限制操作位置的限制操作位置和来自所述变速位置检测装置的检测信息，并且其中所述控制装置具有用于指示相关数据的改变的命令装置。

5. 发明授权

US07469534B2 Load control structure for work vehicle 有权
标题翻译：工作车辆负载控制结构
公开(公告)号：US07469534B2
公开(公告)日：2008-12-30
申请号：US11520457
申请日：2006-09-13
申请人： Eiji Nishi , Keishiro Nishi , Atsushi Shinkai , Yasunobu Nakatani , Muneji Okamoto , Yoichi Sugihara
发明人： Eiji Nishi , Keishiro Nishi , Atsushi Shinkai , Yasunobu Nakatani , Muneji Okamoto , Yoichi Sugihara
IPC分类号： B60K17/10 , B60K41/18
CPC分类号： F16H61/46 , F16H59/18 , F16H59/42 , F16H61/423 , F16H61/433 , F16H61/462 , F16H2059/147 , F16H2059/6853
摘要： A load control structure for a work vehicle comprises: a device for detecting operating position of a manually operated speed change operating element; an engine load detection device for detecting load on an engine of the work vehicle; a swash plate position detecting device for detecting an operating position of a swash plate of a variable displacement pump of a hydrostatic continuously variable speed change device; a pump operating device for steplessly operating the swash plate of the variable displacement pump; a motor operating device for operating a swash plate of a variable displacement motor of the hydrostatic continuously variable speed change device between at least two speed change positions including a higher speed position and a lower speed position; a control device for controlling the operations of the pump operating device and the motor operating device. The control device has a automatic pump swash plate control device for controlling the operation of the pump operating device, based on detected information from the load detection device and detected information from the swash plate position detecting device, such that the greater an engine load is, greater is the extent to which the swash plate of the variable displacement pump is operated to a low speed side; and a motor swash plate control device for controlling the motor operating device so as to change the position of the swash plate of the variable displacement motor between the at least two speed change positions.
摘要翻译：一种用于作业车辆的负载控制结构包括用于检测手动操作的变速操作元件的操作位置的装置; 发动机负载检测装置，用于检测作业车辆的发动机的负荷; 旋转斜盘位置检测装置，用于检测静液压无级变速装置的可变排量泵的斜板的操作位置; 用于无级操作可变排量泵的斜盘的泵操作装置; 电动机操作装置，用于在包括较高速度位置和较低速度位置的至少两个变速位置之间操作所述静液压无级变速装置的可变排量电动机的斜盘; 用于控制泵操作装置和马达操作装置的操作的控制装置。控制装置具有自动泵斜盘控制装置，用于基于来自负载检测装置的检测信息和来自斜盘位置检测装置的检测信息来控制泵操作装置的操作，使得发动机负荷越大，变容量泵的旋转斜盘操作到低速侧的程度越大; 以及电动机斜盘控制装置，用于控制电动机操作装置，以便在至少两个变速位置之间改变可变容量电动机的斜板的位置。

6. 发明申请

US20070078041A1 Speed control structure and method for work vehicle 有权
标题翻译：工作车辆速度控制结构及方法
公开(公告)号：US20070078041A1
公开(公告)日：2007-04-05
申请号：US11517185
申请日：2006-09-07
申请人： Eiji Nishi , Keishiro Nishi , Atsushi Shinkai , Yasunobu Nakatani
发明人： Eiji Nishi , Keishiro Nishi , Atsushi Shinkai , Yasunobu Nakatani
IPC分类号： B60W10/04
CPC分类号： B60W10/11 , B60W10/06 , F16H47/02 , F16H59/42 , F16H61/423 , F16H61/433 , F16H61/46 , F16H61/462 , F16H2059/6853 , Y10T74/19153 , Y10T477/631 , Y10T477/636 , Y10T477/676 , Y10T477/688
摘要： A load control structure for a work vehicle comprises: set rotation speed detection device for detecting a set rotation of an engine of the work vehicle; actual rotation speed detection device that senses an actual rotational speed of the engine; continuously variable speed change device that receives power from an engine of the work vehicle; speed change position detecting device for detecting a speed change operation position of the continuously variable speed change device; operating device for speed-shifting the continuously variable speed change device; control device for controlling the operation of the operating device; wherein the control device calculates a drop amount of the actual engine rotation speed from the set rotation speed based on the detected information from the set rotation speed detection device and the actual rotation speed detection device, and sets a limit operation position for the continuously variable speed change device based on the calculated drop amount and a correlation data that correlates the actual engine rotation speeds with operating positions of the continuously variable speed change device, and controls the operating device such that the operating position of the continuously variable speed change device moves to the limit operating position based on the set limit operating position and detected information from the speed change position detecting device, and wherein the control device has command device for commanding a change of the correlation data.
摘要翻译：一种工作车辆的负载控制结构，具备：检测作业车辆的发动机的设定旋转的设定转速检测装置; 感测发动机的实际转速的实际转速检测装置; 从工作车辆的发动机接收动力的无级变速装置; 速度变化位置检测装置，用于检测无级变速装置的变速操作位置; 用于变速无级变速装置的操作装置; 用于控制操作装置的操作的控制装置; 其特征在于，所述控制装置基于来自所设定的转速检测装置和实际转速检测装置的检测信息，根据所设定的转速来计算实际发动机转速的下降量，并设定所述连续变速的极限动作位置基于所计算的液滴量的变更装置和将实际的发动机转速与无级变速装置的动作位置相关联的相关数据，并且控制操作装置，使得连续变速装置的运转位置向基于所设定的限制操作位置的限制操作位置和来自所述变速位置检测装置的检测信息，并且其中所述控制装置具有用于指示相关数据的改变的命令装置。

7. 发明授权

US08206264B2 Speed control structure and method for work vehicle 有权
标题翻译：工作车辆速度控制结构及方法
公开(公告)号：US08206264B2
公开(公告)日：2012-06-26
申请号：US13179082
申请日：2011-07-08
申请人： Eiji Nishi , Keishiro Nishi , Atsushi Shinkai , Yasunobu Nakatani
发明人： Eiji Nishi , Keishiro Nishi , Atsushi Shinkai , Yasunobu Nakatani
IPC分类号： B60W10/04 , F16H61/40 , F16D31/02 , G06F7/00
CPC分类号： B60W10/11 , B60W10/06 , F16H47/02 , F16H59/42 , F16H61/423 , F16H61/433 , F16H61/46 , F16H61/462 , F16H2059/6853 , Y10T74/19153 , Y10T477/631 , Y10T477/636 , Y10T477/676 , Y10T477/688
摘要： A load control structure for a work vehicle comprises: set rotation speed detection device for detecting a set rotation of an engine of the work vehicle; actual rotation speed detection device that senses an actual rotational speed of the engine; continuously variable speed change device that receives power from an engine of the work vehicle; speed change position detecting device for detecting a speed change operation position of the continuously variable speed change device; operating device for speed-shifting the continuously variable speed change device; control device for controlling the operation of the operating device; wherein the control device calculates a drop amount of the actual engine rotation speed from the set rotation speed based on the detected information from the set rotation speed detection device and the actual rotation speed detection device, and sets a limit operation position for the continuously variable speed change device based on the calculated drop amount and a correlation data that correlates the actual engine rotation speeds with operating positions of the continuously variable speed change device, and controls the operating device such that the operating position of the continuously variable speed change device moves to the limit operating position based on the set limit operating position and detected information from the speed change position detecting device, and wherein the control device has command device for commanding a change of the correlation data.
摘要翻译：一种工作车辆的负载控制结构，具备：检测作业车辆的发动机的设定旋转的设定转速检测装置; 感测发动机的实际转速的实际转速检测装置; 从工作车辆的发动机接收动力的无级变速装置; 速度变化位置检测装置，用于检测无级变速装置的变速操作位置; 用于变速无级变速装置的操作装置; 用于控制操作装置的操作的控制装置; 其特征在于，所述控制装置基于来自所设定的转速检测装置和实际转速检测装置的检测信息，根据所设定的转速来计算实际发动机转速的下降量，并设定所述连续变速的极限动作位置基于所计算的液滴量的变更装置和将实际的发动机转速与无级变速装置的动作位置相关联的相关数据，并且控制操作装置，使得连续变速装置的运转位置向基于所设定的限制操作位置的限制操作位置和来自所述变速位置检测装置的检测信息，并且其中所述控制装置具有用于指示相关数据的改变的命令装置。

8. 发明授权

US07686737B2 Speed control structure and method for work vehicle 有权
标题翻译：工作车辆速度控制结构及方法
公开(公告)号：US07686737B2
公开(公告)日：2010-03-30
申请号：US11517185
申请日：2006-09-07
申请人： Eiji Nishi , Keishiro Nishi , Atsushi Shinkai , Yasunobu Nakatani
发明人： Eiji Nishi , Keishiro Nishi , Atsushi Shinkai , Yasunobu Nakatani
IPC分类号： B60W10/04 , F16H61/40
CPC分类号： B60W10/11 , B60W10/06 , F16H47/02 , F16H59/42 , F16H61/423 , F16H61/433 , F16H61/46 , F16H61/462 , F16H2059/6853 , Y10T74/19153 , Y10T477/631 , Y10T477/636 , Y10T477/676 , Y10T477/688
摘要： A load control structure for a work vehicle comprises: set rotation speed detection device for detecting a set rotation of an engine of the work vehicle; actual rotation speed detection device that senses an actual rotational speed of the engine; continuously variable speed change device that receives power from an engine of the work vehicle; speed change position detecting device for detecting a speed change operation position of the continuously variable speed change device; operating device for speed-shifting the continuously variable speed change device; control device for controlling the operation of the operating device; wherein the control device calculates a drop amount of the actual engine rotation speed from the set rotation speed based on the detected information from the set rotation speed detection device and the actual rotation speed detection device, and sets a limit operation position for the continuously variable speed change device based on the calculated drop amount and a correlation data that correlates the actual engine rotation speeds with operating positions of the continuously variable speed change device, and controls the operating device such that the operating position of the continuously variable speed change device moves to the limit operating position based on the set limit operating position and detected information from the speed change position detecting device, and wherein the control device has command device for commanding a change of the correlation data.
摘要翻译：一种工作车辆的负载控制结构，具备：检测作业车辆的发动机的设定旋转的设定转速检测装置; 感测发动机的实际转速的实际转速检测装置; 从工作车辆的发动机接收动力的无级变速装置; 速度变化位置检测装置，用于检测无级变速装置的变速操作位置; 用于变速无级变速装置的操作装置; 用于控制操作装置的操作的控制装置; 其特征在于，所述控制装置基于来自所设定的转速检测装置和实际转速检测装置的检测信息，根据所设定的转速来计算实际发动机转速的下降量，并设定所述连续变速的极限动作位置基于所计算的液滴量的变更装置和将实际的发动机转速与无级变速装置的动作位置相关联的相关数据，并且控制操作装置，使得连续变速装置的运转位置向基于所设定的限制操作位置的限制操作位置和来自所述变速位置检测装置的检测信息，并且其中所述控制装置具有用于指示相关数据的改变的命令装置。

9. 发明申请

US20070137338A1 Speed control structure and method for work vehicle 有权
标题翻译：工作车辆速度控制结构及方法
公开(公告)号：US20070137338A1
公开(公告)日：2007-06-21
申请号：US11517193
申请日：2006-09-07
申请人： Eiji Nishi , Keishiro Nishi , Atsushi Shinkai , Yasunobu Nakatani
发明人： Eiji Nishi , Keishiro Nishi , Atsushi Shinkai , Yasunobu Nakatani
IPC分类号： B62K25/00 , F16H61/00 , F16H59/00
CPC分类号： F16H61/46 , F16H47/02 , F16H59/42 , F16H61/423 , F16H61/433 , F16H61/462 , F16H2059/065 , F16H2059/6853 , Y10T74/19251 , Y10T74/20037
摘要： A speed control structure for a work vehicle comprises: a speed change operating element for manipulation by an operator; a device for detecting operated position of the speed change operating element; a continuously variable speed change device that receives power from an engine of the work vehicle; speed change position detecting device for detecting a speed change operation position of the continuously variable speed change device; operating device for speed-shifting the continuously variable speed change device; control device for controlling the operating means, wherein the control means: sets a target speed change operating position based on detected information by the operated position detection device and a predetermined correlation data that correlates the operated position of the speed change operating element and the speed change operation position of the continuously variable speed change device, and calculates a deviation between the target seed change operating position and of the continuously variable speed change device and the actual speed change operation position based on the set target seed change operating position and detected information from the speed change position detecting device, and sets a target operating speed for the continuously variable speed change device based on the calculated deviation and a further correlation data that correlates the deviation with an operating speed at which the continuously variable speed change device is operated, and controls the operating means such that the continuously variable speed change device is operated toward the target speed change operating position and at the target operating speed.
摘要翻译：一种用于工作车辆的速度控制结构包括：用于操作者操纵的变速操作元件; 用于检测变速操作元件的操作位置的装置; 从工作车辆的发动机接收动力的连续可变变速装置; 速度变化位置检测装置，用于检测无级变速装置的变速操作位置; 用于变速无级变速装置的操作装置; 用于控制所述操作装置的控制装置，其中所述控制装置：基于所操作的位置检测装置的检测信息来设定目标速度变化操作位置，以及将所述变速操作元件的操作位置与所述速度变化相关联的预定相关数据根据所设定的目标种子变化动作位置，根据来自所述目标种子变化动作位置的检测信息，计算出所述连续变化速度变更装置的目标种子变化动作位置与所述实际变速动作位置之间的偏差变速位置检测装置，根据计算出的偏差设定连续变速装置的目标运转速度，以及将该偏差与运行无级变速装置的运转速度相关联的进一步的相关数据，并进行控制手术使得连续可变变速装置朝向目标变速操作位置和目标操作速度运转。

10. 发明授权

US06722464B2 Working vehicle 有权
标题翻译：工作车辆
公开(公告)号：US06722464B2
公开(公告)日：2004-04-20
申请号：US09940251
申请日：2001-08-27
申请人： Yasunobu Nakatani , Kenji Kato , Isamu Morimoto , Atsushi Shinkai , Keishiro Nishi
发明人： Yasunobu Nakatani , Kenji Kato , Isamu Morimoto , Atsushi Shinkai , Keishiro Nishi
IPC分类号： B60K1710
CPC分类号： B60K17/105 , B60K26/02 , B60K26/04 , B60Y2200/41 , B62D49/0671 , F16H47/02
摘要： A frameless type working vehicle includes an intermediate vehicle body 5 acting as a body forming member for interconnecting a front vehicle body 3 and a rear vehicle body 4. The intermediate vehicle body is formed of a case block 10 housing a hydrostatic stepless transmission (HST) 20. The case block 10 includes, formed integral with one another, a small diameter portion 11 connected to the rear vehicle body 4 and providing case walls for a pump P and a motor M of HST 20, a large diameter portion 12 connected to the front vehicle body 3 and having an upper edge at a higher level than an upper surface of the small diameter portion 11, and a transitional portion 12A disposed between the small diameter portion 11 and the large diameter portion 12. The large diameter portion 12 defines an accommodating space S1 for a main clutch 9 that receives drive from an engine E.
摘要翻译：无框式作业车辆包括作为用于互连前车体3和后车体4的主体形成部件的中间车体5.中间车体由容纳静液压无级变速器（HST）的箱体10形成，壳体块10包括彼此一体形成的连接到后车体4的小直径部分11，并且为HST 20的泵P和马达M提供壳壁，连接到前车体3，并且具有比小直径部分11的上表面高的高度的上边缘，以及设置在小直径部分11和大直径部分12之间的过渡部分12A。大直径部分12限定用于接收来自发动机E的驱动的主离合器9的容纳空间S1。

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