WO2015070720A1 - 一种二级锁闭装置、漏斗车底门及漏斗车 - Google Patents
一种二级锁闭装置、漏斗车底门及漏斗车 Download PDFInfo
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- WO2015070720A1 WO2015070720A1 PCT/CN2014/090410 CN2014090410W WO2015070720A1 WO 2015070720 A1 WO2015070720 A1 WO 2015070720A1 CN 2014090410 W CN2014090410 W CN 2014090410W WO 2015070720 A1 WO2015070720 A1 WO 2015070720A1
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- hole
- curved lever
- arm
- lock key
- lock
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61D—BODY DETAILS OR KINDS OF RAILWAY VEHICLES
- B61D7/00—Hopper cars
- B61D7/14—Adaptations of hopper elements to railways
- B61D7/16—Closure elements for discharge openings
- B61D7/24—Opening or closing means
- B61D7/26—Opening or closing means mechanical
Definitions
- the invention relates to the technical field of railway freight cars, in particular to a secondary locking device, a hopper bottom door and a hopper car.
- the existing railway hopper car adopts a box-type bottom door structure, and the bottom door opening and closing mechanism controls the switch of the bottom door to realize the automatic unloading function.
- the opening and closing of the bottom door is completely dependent on the control of the bottom door opening and closing mechanism.
- the bottom door opening and closing mechanism fails, the bottom door will lose its effective control and is completely in a freely rotating state.
- the bottom door is easily opened by itself, causing cargo leakage or automatic unloading, thereby affecting driving safety.
- the bottom door opening and closing mechanism is a key component to ensure the normal unloading of the railway hopper car. It is easy to open and close and has stable performance.
- the existing "mechanical collision self-unloading" bottom door opening and closing mechanism has the above characteristics and is currently at home and abroad. A large number of loading on the railway hopper car. And has a corresponding self-locking device, to avoid the bottom door self-opening due to vibration or the like during transportation or the bottom door is not normally opened due to other factors.
- the secondary locking scheme currently adopted by the hopper car adopting the "mechanical collision dumping" bottom door opening and closing mechanism is the locking operation handle principle, the adaptability is relatively limited, and the requirements of the bidirectional switch bottom door cannot be met.
- the present invention provides a secondary locking device provided on a hopper bottom door that is opened and closed by a planar four-bar linkage mechanism, and a hopper bottom door including the secondary locking device and includes The bottom door of the hopper car.
- the clutch comprises a lock limit seat and a lock button
- the lock limit seat is fixedly connected to the first drive shaft
- the lock key is fixedly connected to the second drive shaft
- the mechanism is capable of applying pressure to the lock key such that the lock key is disengaged from a keyway of the lock key limit seat, the first drive shaft and the second drive shaft are separated
- the reset mechanism is capable of being engaged with the lock
- the key is biased such that the lock key is reinserted into the lock key limit seat, and the first drive shaft and the second drive shaft are re-engaged to be reset.
- the pressure mechanism comprises a pressing rod, a first curved lever, a first rotating shaft, a biasing arm and a force applying unit
- the pressing rod comprises an m end and an n end
- the first curved lever comprises an a end and a b End
- the m end of the pressing rod is hinged to the lock key
- the a end of the first curved lever is connected to the n end of the pressing rod
- the first curved lever is connected to the first rotating shaft a force arm capable of applying an upward force to the b-end of the first curved lever such that the first curved lever rotates clockwise with the first rotating shaft as an axis, and pushes the pressing rod toward Moving to the right
- the pressing lever applies a rightward force to the lock key, so that the lock key is disengaged from the keyway of the lock key limiting seat, and the first transmission shaft and the second transmission shaft are separated.
- the urging unit comprises a first roller, a first locating pin, and a first connecting member, wherein the urging arm is provided with a first through hole and a first oblong hole, and the first connecting member is opened a second through hole and a third through hole, wherein the first roller has a fourth through hole, and the b end of the first curved lever sequentially passes through the first through hole and the second through hole
- the first positioning pin is disposed in the second through hole and the fourth through hole a hole and a first oblong hole, wherein a lower edge of the first roller protrudes from the urging arm when the first locating pin is at a lower semicircle of the first oblong hole, and the first roller is applied to the first roller An upward force, the first roller drives the first positioning pin to move upward, the first positioning pin drives the first connecting member to move upward, and the first connecting member is opposite to the first curved lever An upward force is applied to the b-end until the first locating pin reaches the upper semi-circle
- the reset mechanism comprises a pull rod, a blocking block, an elastic member, a second curved lever, a second rotating shaft, a third rotating shaft, a screw plug, a reset arm and a limiting unit
- the pulling rod comprises a p end and a q end
- the second curved lever includes a c-end and a d-end
- the p-end of the pull rod is hinged to the lock key
- the q-end of the pull rod is coupled to the c-end of the second curved lever through the third rotating shaft
- a second curved lever is connected to the reset arm through the second rotating shaft
- the screw plug is provided with an accommodating space for moving the q end of the pull rod, the third rotating shaft and the c end of the second curved lever
- the blocking The block is fixedly connected to the pull rod
- one end of the elastic member is fixedly connected to the block
- the other end of the elastic member is fixedly connected to the screw plug
- the lock button and the lock button limit seat When engaged,
- the limiting unit comprises a second roller, a second positioning pin and a second connecting member, wherein the reset arm is provided with a fifth through hole and a second oblong hole, and the second connecting member is provided with a sixth a through hole and a seventh through hole, the first roller is provided with an eighth through hole, and the d end of the second curved lever sequentially passes through the fifth through hole and the sixth through hole, the first The second positioning pin is disposed in the sixth through hole, the eighth through hole and the second oblong hole.
- the second positioning pin When the lock key is engaged with the lock key limiting seat, the second positioning pin is in the second The upper semicircle of the oblong hole prevents the second positioning pin from moving upward, thereby preventing the second connecting member from moving upward, thereby preventing the second curved lever from being the second The shaft rotates counterclockwise for the shaft.
- the present invention also provides a hopper car door comprising the secondary locking device provided by the present invention, the urging arm is a first opening and closing arm of the bottom door, and the reset arm is the bottom door The second switch door arm.
- the present invention also provides a hopper car comprising the hopper car door provided by the present invention.
- the secondary locking mechanism provided by the present invention can re-engage the clutch when the clutch is accidentally separated by the pressure of the pressure mechanism, preventing accidental rotation of the first transmission shaft and the second transmission shaft.
- the hopper car door provided by the invention has the secondary locking device provided by the invention, and the first switch door arm and the second switch door arm open when the first switch door arm and the second switch door arm vibrate cause the clutch to be accidentally separated.
- the reset mechanism can re-engage the clutch to prevent the transmission shaft from rotating to prevent the first switch door arm and the second switch door arm from being accidentally opened, and the hopper bottom door that is opened and closed by the planar four-bar linkage mechanism is more applicable in application. reliable.
- the hopper car provided by the invention has the hopper car door provided by the invention, which can prevent the first door opening arm and the second door opening arm from being accidentally opened, and is more reliable in application.
- FIG. 1 is a schematic structural view of a secondary locking device according to an embodiment of the present invention when a lock key is inserted into a lock key limit seat;
- FIG. 2 is a schematic structural view of a secondary locking device according to an embodiment of the present invention when a lock key and a lock key limit seat are separated.
- the clutch makes the first A transmission shaft 1 and a second transmission shaft 2 are separated, and the clutch engages the first transmission shaft 1 and the second transmission shaft 2 by the reset mechanism.
- the secondary locking mechanism provided by the present invention can re-engage the clutch to prevent accidental rotation of the first transmission shaft 1 and the second transmission shaft 2 when the clutch is accidentally separated by the pressure of the pressure mechanism.
- the clutch includes a lock button limiting seat 3 and a lock button 4, the lock button limiting seat 3 is fixedly connected to the first transmission shaft 1, and the locking button 4 is fixedly connected to the second transmission shaft 2
- the lock button 4 is not completely fixedly coupled to the second transmission shaft 2, but the tension of the elastic member 25 causes the lock button 4 to be snapped onto the first transmission shaft 2 to fix the lock button 4 to the first On the second drive shaft.
- the pressure mechanism can apply pressure to the lock key 4, so that the lock key 4 is disengaged from the key groove of the lock key limit seat 3, and the first drive shaft 1 and the second drive shaft 2 are separated; in this embodiment, since the elastic member 25 is locked
- the pulling force applied by the key 4 is not a rigid force, but an elastic pre-tightening force having a cushioning force, which is insufficient for the lock key 4 to be disengaged from the key groove of the lock key retaining seat 3, and the pressure mechanism is locked to the lock.
- the pressure applied by the key 4 is a rigid force which enables the lock key 4 to be disengaged from the key groove of the lock limit seat 3.
- the reset mechanism is capable of applying a force to the lock key 4 such that the lock key 4 is reinserted into the lock key limit seat 3, and the first drive shaft 1 and the second drive shaft 2 are reengaged to be reset.
- the pressure mechanism comprises a pressing rod 5, a first curved lever 7, a first rotating shaft 36, a force applying arm 10 and a force applying unit, and the pressing rod 5 includes an m end 40 and an n end 41, the first curved lever 7 comprises an a end 9 and a b end 8, the m end 40 of the pressing rod 5 is hinged to the locking key 4, the hinge point is 37, and the a end 9 of the first curved lever 7 is connected to the n of the pressing rod 5.
- the first curved lever 7 is open
- the first rotating shaft 36 is connected to the urging arm 10, and the urging unit can apply an upward force to the b end 8 of the first curved lever 7, so that the first curved lever 7 rotates clockwise with the first rotating shaft 36 as an axis, pushing
- the pressing rod 5 is moved to the right, and the pressing rod 5 applies a rightward force to the lock key 4, so that the lock key 4 is disengaged from the key groove of the lock key limiting seat 3, and the first transmission shaft 1 and the second transmission shaft 2 are separated.
- the force applying unit includes a first roller 17, a first positioning pin 13, and a first connecting member 14.
- the force applying arm 10 is provided with a first through hole 11 and a first
- the first connecting member 14 defines a second through hole 15 and a third through hole 16
- the first roller 17 defines a fourth through hole 18
- the b end 8 of the first curved lever 7 passes through the first a first through pin 15 , a fourth through hole 18 , and a first oblong hole 12
- the first positioning pin 13 is under the first oblong hole 12 .
- the first connecting member 14 is inserted into the recess of the first roller 17, and the first roller 17 is inserted into the recess of the force applying arm 10, so that the structure of the force applying unit is more compact.
- the reset mechanism includes the tie rod 6, the block 24, the elastic member 25 (in the present embodiment, the elastic member is 15), the second curved lever 19, the second rotating shaft 22, and the a three-axis shaft 26, a screw plug 23, a reset arm 27 and a limiting unit, the pull rod 6 includes a p-end 42 and a q-end 43, the second curved lever 19 includes a c-end 20 and a d-end 21, and the p-end 42 of the pull rod 6 is hinged to the lock key 4, the q end 43 of the pull rod 6 is connected to the c end 20 of the second curved lever 19 through the third rotating shaft 26, and the second curved lever 19 is connected to the reset arm 27 through the second rotating shaft 22, and the pulling rod 6 is provided in the screw plug 23 Q end 43, The accommodating space 39 of the third rotating shaft 26 and the second end of the second curved lever 19 moves.
- the blocking block 24 is fixedly connected to the pull rod 6.
- One end of the elastic member 25 is fixedly connected to the blocking block 24, and the other end of the elastic member 25 is fixed.
- the limiting unit includes a second roller 30, a second positioning pin 35, and a second connecting member 32.
- the reset arm 27 defines a fifth through hole 28 and a second oblong hole 29, and the second connecting member 32 has a sixth opening.
- the through hole 33 and the seventh through hole 34, the first roller 30 is provided with an eighth through hole 31, and the d end 21 of the second curved lever 19 sequentially passes through the fifth through hole 28 and the sixth through hole 33, and the second positioning The pin 35 is disposed through the sixth through hole 33, the eighth through hole 31 and the second oblong hole 29.
- the second positioning pin 35 is located on the second oblong hole 29.
- the upper semicircle of the second oblong hole 29 prevents the second positioning pin 35 from moving upward, thereby preventing the second connecting member 32 from moving upward, thereby preventing the second curved lever 19 from rotating counterclockwise with the second rotating shaft 22 as the axis.
- the second connecting member 32 is inserted into the recess of the second roller 30, and the second roller 30 is inserted into the recess of the reset arm 27, so that the structure of the limiting unit is more compact.
- the present invention also provides a hopper car door comprising a secondary locking device provided by the present invention, the urging arm 10 is a first switch door arm of the bottom door, and the reset arm 27 is a second switch door arm of the bottom door.
- the hopper car door provided by the invention has the secondary locking device provided by the invention, and the first switch door arm and the second switch door arm open when the first switch door arm and the second switch door arm vibrate cause the clutch to be accidentally separated.
- the reset mechanism can re-engage the clutch to prevent the transmission shaft from rotating to prevent the first switch door arm and the second switch door arm from being accidentally opened, and the hopper bottom door that is opened and closed by the planar four-bar linkage mechanism is more applicable in application. reliable.
- the present invention also provides a hopper car comprising the hopper car door provided by the present invention.
- the hopper car provided by the invention has the hopper car door provided by the invention, which can prevent the first door opening arm and the second door opening arm from being accidentally opened, and is more reliable in application.
- the first switch door arm When the hopper car provided by the present invention is in operation, the first switch door arm is subjected to an upward force by the ground opening ramp, and the first roller 17 drives the first positioning pin 13 to move upward.
- a positioning pin 13 drives the first connecting member 14 to move upward, and the first connecting member 14 applies an upward force to the b end 8 of the first curved lever 7 until the first positioning pin 13 reaches the upper semicircle of the first oblong hole 12.
- the lock key 4 is disengaged from the keyway of the lock key retaining seat 3, the elastic member 25 is changed from the stretched state to the compressed state, and the first drive shaft 1 and the second drive shaft 2 are separated, but when the hopper car is reversely operated At this time, the upward force applied to the first roller 17 gradually disappears, at which time the elastic member 25 is gradually restored from the compressed state, and the first positioning pin 13, the first roller 17, and the first connecting member 14 are in their own gravity.
- the pressing rod 1 is moved to the left, and the pressing rod 1 then drives the locking key 4 to move to the left, and is reinserted into the locking key limiting seat 3, and the first transmission shaft 1 and the second transmission shaft 2 are re-engaged and reset.
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Abstract
一种二级锁闭装置，包括第一传动轴（1）、第二传动轴（2）、离合器、压力机构和复位机构，在压力机构的压力作用下，离合器使第一传动轴（1）与第二传动轴（2）分离，在复位机构的作用下，离合器使第一传动轴（1）与第二传动轴（2）接合。该二级锁闭装置可用于漏斗车的底门，能使平面四连杆机构过死点开闭的漏斗车底门更加可靠。
Description
本发明涉及铁路货车技术领域，特别涉及一种二级锁闭装置、漏斗车底门及漏斗车。
现有的铁路漏斗车多采用箱式底门结构，通过底门开闭机构控制底门的开关，实现自动卸货功能。在此种结构下，底门的开关及锁定完全依赖于底门开闭机构的控制。当底门开闭机构失效时，底门将失去有效控制，完全处于自由转动状态，车辆运行过程中受到振动时易使底门自行开启，造成货物泄漏或自动卸货，进而影响行车安全。
底门开闭机构是保证铁路漏斗车正常卸货的关键部件，既要开闭操作方便、性能稳定，现有的“机械碰撞自卸式”底门开闭机构就具备以上特点，目前在国内外铁路漏斗车上大量的装用。并具有相应的自锁装置、避免运输过程中由于振动等原因发生底门自开或由于其它因素导致的底门不正常开启。
但采用“机械碰撞自卸式”底门开闭机构的漏斗车目前采用的二级锁闭方案均为锁闭操作柄原理，适应性比较局限，而且也无法满足双向开关底门的要求。
发明内容
为了解决上述问题，本发明提出了一种利用平面四连杆机构过死点开闭的漏斗车底门上设置的二级锁闭装置、包含该二级锁闭装置的漏斗车底门及包含该底门的漏斗车。
本发明提供的二级锁闭装置包括第一传动轴、第二传动轴、离合器、压力机构和复位机构，在所述压力机构的压力作用下，所述离合器使所述第一传动轴和第二传动轴分离，在所述复位机构的作用下，所述离合器使所述第一传动轴和第二传动轴接合。
作为优选，所述离合器包括锁键限位座和锁键，所述锁键限位座固定连接于所述第一传动轴，所述锁键固定连接于所述第二传动轴，所述压力机构能够向所述锁键施加压力，使得所述锁键从所述锁键限位座的键槽中脱离，所述第一传动轴和第二传动轴分离；所述复位机构能够向所述锁键施力，使得所述锁键重新插入到所述锁键限位座中，所述第一传动轴和第二传动轴重新接合而复位。
作为优选，所述压力机构包括压杆、第一曲杠杆、第一转轴、施力臂和施力单元，所述压杆包括m端和n端，所述第一曲杠杆包括a端和b端，所述压杆的m端铰接于所述锁键，所述第一曲杠杆的a端连接于所述压杆的n端，所述第一曲杠杆通过所述第一转轴连接于施力臂，所述施力单元能够对所述第一曲杠杆的b端施加向上的作用力，使得所述第一曲杠杆以所述第一转轴为轴顺时针旋转，推动所述压杆向右移动，所述压杆对所述锁键施加向右的作用力，使得所述锁键从所述锁键限位座的键槽中脱离，所述第一传动轴和第二传动轴分离。
作为优选，所述施力单元包括第一滚轮、第一定位销、第一连接件，所述施力臂上开设有第一通孔和第一长圆孔，所述第一连接件上开设有第二通孔和第三通孔，所述第一滚轮上开设有第四通孔，所述第一曲杠杆的b端依次穿过所述第一通孔和所述第二通孔，所述第一定位销穿设于所述第二通孔、第四通
孔和第一长圆孔，当所述第一定位销处于所述第一长圆孔下半圆处时，所述第一滚轮的下缘凸出于所述施力臂，对所述第一滚轮施加向上的作用力，所述第一滚轮带动所述第一定位销向上运动，所述第一定位销带动所述第一连接件向上运动，所述第一连接件对所述第一曲杠杆的b端施加向上的作用力，直至所述第一定位销到达所述第一长圆孔的上半圆处。
作为优选，所述复位机构包括拉杆、拦块、弹性部件、第二曲杠杆、第二转轴、第三转轴、螺堵、复位臂和限制单元，所述拉杆包括p端和q端，所述第二曲杠杆包括c端和d端，所述拉杆的p端铰接于所述锁键，所述拉杆的q端通过所述第三转轴连接于所述第二曲杠杆的c端，所述第二曲杠杆通过所述第二转轴连接于复位臂，所述螺堵内设有供所述拉杆的q端、第三转轴和第二曲杠杆的c端移动的容置空间，所述拦块固定连接于所述拉杆上，所述弹性部件的一端固定连接于所述拦块，所述弹性部件的另一端固定连接于所述螺堵，所述锁键与所述锁键限位座接合时，所述复位臂能够阻止所述第二曲杠杆以所述第二转轴为轴逆时针旋转，此时，所述弹性部件呈拉伸状。
作为优选，所述限制单元包括第二滚轮、第二定位销、第二连接件，所述复位臂上开设有第五通孔和第二长圆孔，所述第二连接件上开设有第六通孔和第七通孔，所述第一滚轮上开设有第八通孔，所述第二曲杠杆的d端依次穿过所述第五通孔和所述第六通孔，所述第二定位销穿设于所述第六通孔、第八通孔和第二长圆孔，当所述锁键与所述锁键限位座接合时，所述第二定位销处于所述第二长圆孔的上半圆处，所述第二长圆孔的上半圆阻止所述第二定位销向上运动，从而阻止所述第二连接件向上运动，进而阻止所述第二曲杠杆以所述第二转轴为轴逆时针旋转。
本发明还提供了一种漏斗车底门，包括本发明提供的二级锁闭装置，所述施力臂是所述底门的第一开关门臂，所述复位臂是所述底门的第二开关门臂。
本发明还提供了一种漏斗车，包括本发明提供的漏斗车底门。
本发明提供的二级锁闭机构当离合器意外地受到压力机构的压力作用而分离时，复位机构能够使该离合器重新接合，阻止第一传动轴和第二传动轴的意外旋转。
本发明提供的漏斗车底门具有本发明提供的二级锁闭装置，在第一开关门臂、第二开关门臂振动引起离合器意外分离导致第一开关门臂和第二开关门臂外打开时，复位机构能够使该离合器重新接合阻止传动轴旋转从而阻止第一开关门臂、第二开关门臂意外打开，利用平面四连杆机构过死点开闭的漏斗车底门在应用时更加可靠。
本发明提供的漏斗车具有本发明提供的漏斗车底门，能够阻止第一开门臂、第二开门臂意外打开，应用时更加可靠。
图1为本发明实施例提供的二级锁闭装置在锁键插入到锁键限位座中时的结构示意图；
图2为本发明实施例提供的二级锁闭装置在锁键与锁键限位座分离时的结构示意图。
为了深入了解本发明，下面结合附图及具体实施例对本发明进行详细说明。
参见附图1和附图2，本发明提供的二级锁闭装置包括第一传动轴1、第二传动轴2、离合器、压力机构和复位机构，在压力机构的压力作用下，离合器使第一传动轴1和第二传动轴2分离，在复位机构的作用下，离合器使第一传动轴1和第二传动轴2接合。
本发明提供的二级锁闭机构当离合器意外地受到压力机构的压力作用而分离时，复位机构能够使该离合器重新接合，阻止第一传动轴1和第二传动轴2的意外旋转。
其中，作为离合器的一种具体实现方式，离合器包括锁键限位座3和锁键4，锁键限位座3固定连接于第一传动轴1，锁键4固定连接于第二传动轴2，本实施例中，锁键4并不是完全固定连接于第二传动轴2上的，而是弹性部件25的拉力使锁键4卡扣于第传动轴2上使锁键4固定连接于第二传动轴上。压力机构能够向锁键4施加压力，使得锁键4从锁键限位座3的键槽中脱离，第一传动轴1和第二传动轴2分离；本实施例中，由于弹性部件25对锁键4施加的拉力并不是刚性作用力，而是具有缓冲作用的弹性预紧力，该弹性预紧力不足以使锁键4从锁键限位座3的键槽中脱离，而压力机构向锁键4施加的压力是刚性作用力，该刚性作用力能够使得锁键4从锁键限位座3的键槽中脱离。复位机构能够向锁键4施力，使得锁键4重新插入到锁键限位座3中，第一传动轴1和第二传动轴2重新接合而复位。
其中，作为压力机构的一种具体的实现方式，压力机构包括压杆5、第一曲杠杆7、第一转轴36、施力臂10和施力单元，压杆5包括m端40和n端41，第一曲杠杆7包括a端9和b端8，压杆5的m端40铰接于锁键4，铰接点为37，第一曲杠杆7的a端9连接于压杆5的n端41，第一曲杠杆7通
过第一转轴36连接于施力臂10，施力单元能够对第一曲杠杆7的b端8施加向上的作用力，使得第一曲杠杆7以第一转轴36为轴顺时针旋转，推动压杆5向右移动，压杆5对锁键4施加向右的作用力，使得锁键4从锁键限位座3的键槽中脱离，第一传动轴1和第二传动轴2分离。
其中，作为施力单元的一种具体的实现方式，施力单元包括第一滚轮17、第一定位销13、第一连接件14，施力臂10上开设有第一通孔11和第一长圆孔12，第一连接件14上开设有第二通孔15和第三通孔16，第一滚轮17上开设有第四通孔18，第一曲杠杆7的b端8依次穿过第一通孔11和第二通孔15，第一定位销13穿设于第二通孔15、第四通孔18和第一长圆孔12，当第一定位销13处于第一长圆孔12下半圆处时，第一滚轮17的下缘凸出于施力臂10，对第一滚轮17施加向上的作用力，第一滚轮17带动第一定位销13向上运动，第一定位销13带动第一连接件14向上运动，第一连接件14对第一曲杠杆7的b端8施加向上的作用力，直至第一定位销13到达第一长圆孔12的上半圆处。
本实施例中，第一连接件14插接于第一滚轮17的凹槽内，第一滚轮17插接于施力臂10的凹槽内，使该施力单元的结构更加紧凑。
其中，作为复位机构的一种具体的实现方式，复位机构包括拉杆6、拦块24、弹性部件25(本实施例中，弹性部件是15)、第二曲杠杆19、第二转轴22、第三转轴26、螺堵23、复位臂27和限制单元，拉杆6包括p端42和q端43，第二曲杠杆19包括c端20和d端21，拉杆6的p端42铰接于锁键4，拉杆6的q端43通过第三转轴26连接于第二曲杠杆19的c端20，第二曲杠杆19通过第二转轴22连接于复位臂27，螺堵23内设有供拉杆6的q端43、
第三转轴26和第二曲杠杆19的c端20移动的容置空间39，拦块24固定连接于拉杆6上，弹性部件25的一端固定连接于拦块24，弹性部件25的另一端固定连接于螺堵23，锁键4与锁键限位座3接合时，复位臂27能够阻止第二曲杠杆19以第二转轴22为轴逆时针旋转，此时，弹性部件25呈拉伸状。
其中，限制单元包括第二滚轮30、第二定位销35、第二连接件32，复位臂27上开设有第五通孔28和第二长圆孔29，第二连接件32上开设有第六通孔33和第七通孔34，第一滚轮30上开设有第八通孔31，第二曲杠杆19的d端21依次穿过第五通孔28和第六通孔33，第二定位销35穿设于第六通孔33、第八通孔31和第二长圆孔29，当锁键4与锁键限位座3接合时，第二定位销35处于第二长圆孔29的上半圆处，第二长圆孔29的上半圆阻止第二定位销35向上运动，从而阻止第二连接件32向上运动，进而阻止第二曲杠杆19以第二转轴22为轴逆时针旋转。
本实施例中，第二连接件32插接于第二滚轮30的凹槽内，第二滚轮30插接于复位臂27的凹槽内，使该限制单元的结构更加紧凑。
本发明还提供了一种漏斗车底门，包括本发明提供的二级锁闭装置，施力臂10是底门的第一开关门臂，复位臂27是底门的第二开关门臂。
本发明提供的漏斗车底门具有本发明提供的二级锁闭装置，在第一开关门臂、第二开关门臂振动引起离合器意外分离导致第一开关门臂和第二开关门臂外打开时，复位机构能够使该离合器重新接合阻止传动轴旋转从而阻止第一开关门臂、第二开关门臂意外打开，利用平面四连杆机构过死点开闭的漏斗车底门在应用时更加可靠。
本发明还提供了一种漏斗车，包括本发明提供的漏斗车底门。
本发明提供的漏斗车具有本发明提供的漏斗车底门，能够阻止第一开门臂、第二开门臂意外打开，应用时更加可靠。
本发明提供的漏斗车在运行过程中，第一开关门臂在地面开门斜台的作用下，第一滚轮17首先受到向上的作用力，第一滚轮17带动第一定位销13向上运动，第一定位销13带动第一连接件14向上运动，第一连接件14对第一曲杠杆7的b端8施加向上的作用力，直至第一定位销13到达第一长圆孔12的上半圆处，锁键4从锁键限位座3的键槽中脱离，弹性部件25从拉伸状态变为压缩状态，第一传动轴1和第二传动轴2分离，但是，当该漏斗车反向运行时，施加在第一滚轮17上的向上的作用力逐渐消失，此时，弹性部件25逐渐从压缩状态复原，第一定位销13、第一滚轮17和第一连接件14在自身重力的作用下，带动压杆1向左运动，压杆1继而带动锁键4向左运动，重新插入到锁键限位座3中，第一传动轴1和第二传动轴2重新接合而复位。
以上所述的具体实施方式，对本发明的目的、技术方案和有益效果进行了进一步详细说明，所应理解的是，以上所述仅为本发明的具体实施方式而已，并不用于限制本发明，凡在本发明的精神和原则之内，所做的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。
Claims (8)
- 一种二级锁闭装置，其特征在于，包括第一传动轴、第二传动轴、离合器、压力机构和复位机构，在所述压力机构的压力作用下，所述离合器使所述第一传动轴和第二传动轴分离，在所述复位机构的作用下，所述离合器使所述第一传动轴和第二传动轴接合。
- 根据权利要求1所述的装置，其特征在于，所述离合器包括锁键限位座和锁键，所述锁键限位座固定连接于所述第一传动轴，所述锁键固定连接于所述第二传动轴，所述压力机构能够向所述锁键施加压力，使得所述锁键从所述锁键限位座的键槽中脱离，所述第一传动轴和第二传动轴分离；所述复位机构能够向所述锁键施力，使得所述锁键重新插入到所述锁键限位座中，所述第一传动轴和第二传动轴重新接合而复位。
- 根据权利要求1所述的装置，其特征在于，所述压力机构包括压杆、第一曲杠杆、第一转轴、施力臂和施力单元，所述压杆包括m端和n端，所述第一曲杠杆包括a端和b端，所述压杆的m端铰接于所述锁键，所述第一曲杠杆的a端连接于所述压杆的n端，所述第一曲杠杆通过所述第一转轴连接于施力臂，所述施力单元能够对所述第一曲杠杆的b端施加向上的作用力，使得所述第一曲杠杆以所述第一转轴为轴顺时针旋转，推动所述压杆向右移动，所述压杆对所述锁键施加向右的作用力，使得所述锁键从所述锁键限位座的键槽中脱离，所述第一传动轴和第二传动轴分离。
- 根据权利要求3所述的装置，其特征在于，所述施力单元包括第一滚轮、第一定位销、第一连接件，所述施力臂上开设有第一通孔和第一长圆孔，所述第一连接件上开设有第二通孔和第三通孔，所述第一滚轮上开设有第四通 孔，所述第一曲杠杆的b端依次穿过所述第一通孔和所述第二通孔，所述第一定位销穿设于所述第二通孔、第四通孔和第一长圆孔，当所述第一定位销处于所述第一长圆孔下半圆处时，所述第一滚轮的下缘凸出于所述施力臂，对所述第一滚轮施加向上的作用力，所述第一滚轮带动所述第一定位销向上运动，所述第一定位销带动所述第一连接件向上运动，所述第一连接件对所述第一曲杠杆的b端施加向上的作用力，直至所述第一定位销到达所述第一长圆孔的上半圆处。
- 根据权利要求1所述的装置，其特征在于，所述复位机构包括拉杆、拦块、弹性部件、第二曲杠杆、第二转轴、第三转轴、螺堵、复位臂和限制单元，所述拉杆包括p端和q端，所述第二曲杠杆包括c端和d端，所述拉杆的p端铰接于所述锁键，所述拉杆的q端通过所述第三转轴连接于所述第二曲杠杆的c端，所述第二曲杠杆通过所述第二转轴连接于复位臂，所述螺堵内设有供所述拉杆的q端、第三转轴和第二曲杠杆的c端移动的容置空间，所述拦块固定连接于所述拉杆上，所述弹性部件的一端固定连接于所述拦块，所述弹性部件的另一端固定连接于所述螺堵，所述锁键与所述锁键限位座接合时，所述复位臂能够阻止所述第二曲杠杆以所述第二转轴为轴逆时针旋转，此时，所述弹性部件呈拉伸状。
- 根据权利要求5所述的装置，所述限制单元包括第二滚轮、第二定位销、第二连接件，所述复位臂上开设有第五通孔和第二长圆孔，所述第二连接件上开设有第六通孔和第七通孔，所述第一滚轮上开设有第八通孔，所述第二曲杠杆的d端依次穿过所述第五通孔和所述第六通孔，所述第二定位销穿设于所述第六通孔、第八通孔和第二长圆孔，当所述锁键与所述锁键限位座接合时， 所述第二定位销处于所述第二长圆孔的上半圆处，所述第二长圆孔的上半圆阻止所述第二定位销向上运动，从而阻止所述第二连接件向上运动，进而阻止所述第二曲杠杆以所述第二转轴为轴逆时针旋转。
- 一种漏斗车底门，其特征在于，包括权利要求1～6中任一所述的二级锁闭装置，所述施力臂是所述底门的第一开关门臂，所述复位臂是所述底门的第二开关门臂。
- 一种漏斗车，其特征在于，包括权利要求7所述的所述漏斗车底门。
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