CN203713880U - Second-stage locking device, hopper car bottom door and hopper car - Google Patents
Second-stage locking device, hopper car bottom door and hopper car Download PDFInfo
- Publication number
- CN203713880U CN203713880U CN201320724931.7U CN201320724931U CN203713880U CN 203713880 U CN203713880 U CN 203713880U CN 201320724931 U CN201320724931 U CN 201320724931U CN 203713880 U CN203713880 U CN 203713880U
- Authority
- CN
- China
- Prior art keywords
- hole
- locking key
- bent lever
- arm
- transmission shaft
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Lock And Its Accessories (AREA)
Abstract
The utility model discloses a second-stage locking device, a hopper car bottom door and a hopper car. The locking device comprises a first transmission shaft, a second transmission shaft, a clutch, a pressure mechanism and a reset mechanism, wherein under the action of the pressure of the pressure mechanism, the clutch enables the first transmission shaft to be separated from the second transmission shaft; under the action of the reset mechanism, the clutch enables the first transmission shaft to be jointed with the second transmission shaft; the bottom door comprises the locking device; the hopper car comprises the bottom door. When the clutch is separated under the action of the pressure of the pressure mechanism unexpectedly, the reset mechanism enables the clutch to be jointed newly to prevent the first transmission shaft and the second transmission shaft from rotating unexpectedly. According to the utility model, the hopper car bottom door which can be opened and closed beyond a dead point by adopting the plane four-bar linkage mechanism is more reliable when in use. The hopper car is more reliable when in use.
Description
Technical field
The utility model relates to railway truck technical field, particularly a kind of secondary locking device, hopper wagon bottom door and hopper car.
Background technology
The box bottom door structure of the many employings of existing railway hopper car, by the switch of bottom door opening and closing mechanism controls bottom door, realizes automatic unloading function.Under this kind of structure, the place one's entire reliance upon control of bottom door opening and closing mechanism of the switch of bottom door and locking.When bottom door opening and closing failure mechanisms, bottom door will lose effective control, completely in free rotary state, while being subject to vibrating in vehicle operating process, easily make bottom door open voluntarily, cause cargo leakage or unloading automatically, and then affect traffic safety.
Bottom door opening and closing mechanism is the critical component that guarantees the normal unloading of railway hopper car, should opening and closing operations convenient, stable performance, existing " mechanical collision self lighting type " bottom door opening and closing mechanism just possesses above feature, and dresses a large amount of on current railway hopper car are at home and abroad used.And there is corresponding self-locking device, avoid in transportation because the reason generation bottom doors such as vibration are opened from the bottom door mal of opening or cause due to other factors.
But the secondary locking scheme that the hopper car that adopts " mechanical collision self lighting type " bottom door opening and closing mechanism adopts is at present lock operation handle principle, and comformability relatively limits to, and cannot meet the requirement of bidirectional switch bottom door.
Utility model content
In order to address the above problem, the utility model proposes a kind of secondary locking device, the hopper wagon bottom door that comprises this secondary locking device that lanar four rod mechanism crosses and arrange on the hopper wagon bottom door that dead point opens and closes and hopper car that comprises this bottom door of utilizing.
The secondary locking device that the utility model provides comprises the first transmission shaft, second driving shaft, power-transfer clutch, pressure mechanism and Bringing-back mechanism, under the pressure-acting of described pressure mechanism, described power-transfer clutch makes described the first transmission shaft separated with second driving shaft, under the effect of described Bringing-back mechanism, described power-transfer clutch engages described the first transmission shaft and second driving shaft.
As preferably, described power-transfer clutch comprises locking key limit base and locking key, described locking key limit base is fixedly connected on described the first transmission shaft, described locking key is fixedly connected on described second driving shaft, described pressure mechanism can be to the described locking key application of force, described locking key is departed from from the keyway of described locking key limit base, and described the first transmission shaft is separated with second driving shaft; Described Bringing-back mechanism can be exerted pressure to described locking key, and described locking key is reinserted in described locking key limit base, and described the first transmission shaft and second driving shaft are re-engaged and reset.
As preferably, described pressure mechanism comprises depression bar, the first bent lever, the first rotating shaft, force arm and application of force unit, described depression bar comprises m end and n end, described the first bent lever comprises a end and b end, the m end of described depression bar is articulated with described locking key, the a end of described the first bent lever is connected in the n end of described depression bar, described the first bent lever is connected in force arm by described the first rotating shaft, described application of force unit can apply application force upwards to the b end of described the first bent lever, make described the first bent lever take described the first rotating shaft as axle clickwise, promoting described depression bar moves right, described depression bar applies application force to the right to described locking key, described locking key is departed from from the keyway of described locking key limit base, described the first transmission shaft is separated with second driving shaft.
As preferably, described application of force unit comprises the first roller, the first locating dowel pin, the first attaching parts, on described force arm, offer the first through hole and the first slotted hole, on described the first attaching parts, offer the second through hole and third through-hole, on described the first roller, offer fourth hole, the b end of described the first bent lever is successively through described the first through hole and described the second through hole, described the first locating dowel pin is arranged in described the second through hole, fourth hole and the first slotted hole, when described the first locating dowel pin is during in described the first slotted hole lower half circle place, the lower edge of described the first roller protrudes from described force arm, described the first roller is applied to application force upwards, described the first roller drives described the first locating dowel pin upward movement, described the first locating dowel pin drives described the first attaching parts upward movement, described the first attaching parts applies application force upwards to the b end of described the first bent lever, until described the first locating dowel pin arrives the upper semi-circle place of described the first slotted hole.
As preferably, described Bringing-back mechanism comprises pull bar, block piece, elastomeric element, the second bent lever, the second rotating shaft, the 3rd rotating shaft, screw plug, reset arm and limiting unit, described pull bar comprises p end and q end, described the second bent lever comprises c end and d end, the p end of described pull bar is articulated with described locking key, the c that the q end of described pull bar is connected in described the second bent lever by described the 3rd rotating shaft holds, described the second bent lever is connected in reset arm by described the second rotating shaft, in described screw plug, be provided with the q end for described pull bar, the mobile accommodation space of c end of the 3rd rotating shaft and the second bent lever, the described piece that blocks is fixedly connected on described pull bar, described in being fixedly connected on, one end of described elastomeric element blocks piece, the other end of described elastomeric element is fixedly connected on described screw plug, when described locking key engages with described locking key limit base, described reset arm can stop described the second bent lever to take described the second rotating shaft as axle left-hand revolution, now, described elastomeric element is stretching shape.
As preferably, described limiting unit comprises the second roller, the second locating dowel pin, the second attaching parts, in described reset arm, offer fifth hole and the second slotted hole, on described the second attaching parts, offer the 6th through hole and the 7th through hole, on described the first roller, offer the 8th through hole, the d end of described the second bent lever is successively through described fifth hole and described the 6th through hole, described the second locating dowel pin is arranged in described the 6th through hole, the 8th through hole and the second slotted hole, when described locking key engages with described locking key limit base, the upper semi-circle place of described the second locating dowel pin in described the second slotted hole, the upper semi-circle of described the second slotted hole stops described the second locating dowel pin upward movement, thereby stop described the second attaching parts upward movement, and then stop described the second bent lever to take described the second rotating shaft as axle left-hand revolution.
The utility model also provides a kind of hopper wagon bottom door, comprises the secondary locking device that the utility model provides, and described force arm is the first switch gate arm of described bottom door, and described reset arm is the second switch door arm of described bottom door.
The utility model also provides a kind of hopper car, comprises the hopper wagon bottom door that the utility model provides.
The secondary latch locking mechanism that the utility model provides when power-transfer clutch be unexpectedly under pressure mechanism pressure-acting and when separated, Bringing-back mechanism can make this power-transfer clutch be re-engaged, and stops the unexpected rotation of the first transmission shaft and second driving shaft.
The hopper wagon bottom door that the utility model provides has the secondary locking device that the utility model provides, when the first switch gate arm, the vibration of second switch door arm cause that power-transfer clutch accidental separation causes the first switch gate arm and second switch door arm to be opened outward, thereby Bringing-back mechanism can make this power-transfer clutch be re-engaged, stop transmission shaft rotation to stop the first switch gate arm, second switch door arm surprisingly to be opened, utilize lanar four rod mechanism to cross the hopper wagon bottom door that dead point opens and closes more reliable when application.
The hopper car that the utility model provides has the hopper wagon bottom door that the utility model provides, and can stop first arm, second arm that opens the door that opens the door surprisingly to be opened, more reliable during application.
Accompanying drawing explanation
The structural representation of the secondary locking device that Fig. 1 provides for the utility model embodiment when locking key is inserted in locking key limit base;
The structural representation of the secondary locking device that Fig. 2 provides for the utility model embodiment when locking key is separated with locking key limit base.
The specific embodiment
In order to understand the utility model in depth, below in conjunction with drawings and the specific embodiments, the utility model is elaborated.
Referring to accompanying drawing 1 and accompanying drawing 2, the secondary locking device that the utility model provides comprises the first transmission shaft 1, second driving shaft 2, power-transfer clutch, pressure mechanism and Bringing-back mechanism, under the pressure-acting of pressure mechanism, power-transfer clutch makes the first transmission shaft 1 separated with second driving shaft 2, under the effect of Bringing-back mechanism, power-transfer clutch engages the first transmission shaft 1 and second driving shaft 2.
The secondary latch locking mechanism that the utility model provides when power-transfer clutch be unexpectedly under pressure mechanism pressure-acting and when separated, Bringing-back mechanism can make this power-transfer clutch be re-engaged, and stops the unexpected rotation of the first transmission shaft 1 and second driving shaft 2.
Wherein, a kind of specific implementation as power-transfer clutch, power-transfer clutch comprises locking key limit base 3 and locking key 4, locking key limit base 3 is fixedly connected on the first transmission shaft 1, locking key 4 is fixedly connected on second driving shaft 2, in the present embodiment, locking key 4 is not to be completely fixed to be connected on second driving shaft 2, but the pulling force of elastomeric element 25 is snapped on transmission shaft 2 locking key 4, locking key 4 is fixedly connected on second driving shaft.Pressure mechanism can be exerted pressure to locking key 4, and locking key 4 is departed from from the keyway of locking key limit base 3, and the first transmission shaft 1 is separated with second driving shaft 2; In the present embodiment, the pulling force applying due to 25 pairs of locking keys 4 of elastomeric element is not rigidity application force, but there is the elasticity predetermincd tension of buffer action, this elasticity predetermincd tension deficiency so that locking key 4 from the keyway of locking key limit base 3, depart from, and pressure mechanism is rigidity application forces to locking key 4 applied pressures, this rigidity application force can make locking key 4 depart from from the keyway of locking key limit base 3.Bringing-back mechanism can reinsert in locking key limit base 3 locking key 4 to locking key 4 application of forces, and the first transmission shaft 1 and second driving shaft 2 are re-engaged and reset.
Wherein, a kind of concrete implementation as pressure mechanism, pressure mechanism comprises depression bar 5, the first bent lever 7, the first rotating shaft 36, force arm 10 and application of force unit, depression bar 5 comprises m end 40 and n end 41, the first bent lever 7 comprises a end 9 and b end 8, the m end 40 of depression bar 5 is articulated with locking key 4, hinge-point is 37, the a end 9 of the first bent lever 7 is connected in the n end 41 of depression bar 5, the first bent lever 7 is connected in force arm 10 by the first rotating shaft 36, application of force unit can apply application force upwards to the b end 8 of the first bent lever 7, make the first bent lever 7 take the first rotating shaft 36 as axle clickwise, promoting depression bar 5 moves right, 5 pairs of locking keys 4 of depression bar apply application force to the right, locking key 4 is departed from from the keyway of locking key limit base 3, the first transmission shaft 1 is separated with second driving shaft 2.
Wherein, a kind of concrete implementation as application of force unit, application of force unit comprises the first roller 17, the first locating dowel pin 13, the first attaching parts 14, on force arm 10, offer the first through hole 11 and the first slotted hole 12, on the first attaching parts 14, offer the second through hole 15 and third through-hole 16, on the first roller 17, offer fourth hole 18, the b end 8 of the first bent lever 7 is successively through the first through hole 11 and the second through hole 15, the first locating dowel pin 13 is arranged in the second through hole 15, fourth hole 18 and the first slotted hole 12, when the first locating dowel pin 13 is during in the first slotted hole 12 lower half circle place, the lower edge of the first roller 17 protrudes from force arm 10, the first roller 17 is applied to application force upwards, the first roller 17 drives the first locating dowel pin 13 upward movements, the first locating dowel pin 13 drives the first attaching parts 14 upward movements, the b end 8 of first 14 pairs of attaching partss the first bent lever 7 applies application force upwards, until the first locating dowel pin 13 arrives the upper semi-circle place of the first slotted hole 12.
In the present embodiment, the first attaching parts 14 is plugged in the groove of the first roller 17, and the first roller 17 is plugged in the groove of force arm 10, makes the structure of this application of force unit compacter.
Wherein, a kind of concrete implementation as Bringing-back mechanism, Bringing-back mechanism comprises pull bar 6, block piece 24, in elastomeric element 25(the present embodiment, elastomeric element is 15), the second bent lever 19, the second rotating shaft 22, the 3rd rotating shaft 26, screw plug 23, reset arm 27 and limiting unit, pull bar 6 comprises p end 42 and q end 43, the second bent lever 19 comprises c end 20 and d end 21, the p end 42 of pull bar 6 is articulated with locking key 4, the q end 43 of pull bar 6 is connected in the c end 20 of the second bent lever 19 by the 3rd rotating shaft 26, the second bent lever 19 is connected in reset arm 27 by the second rotating shaft 22, in screw plug 23, be provided with the q end 43 for pull bar 6, c end 20 accommodation spaces that move 39 of the 3rd rotating shaft 26 and the second bent lever 19, blocking piece 24 is fixedly connected on pull bar 6, one end of elastomeric element 25 is fixedly connected on blocks piece 24, the other end of elastomeric element 25 is fixedly connected on screw plug 23, when locking key 4 engages with locking key limit base 3, reset arm 27 can stop the second bent lever 19 to take the second rotating shaft 22 as axle left-hand revolution, now, elastomeric element 25 is stretching shape.
Wherein, limiting unit comprises the second roller 30, the second locating dowel pin 35, the second attaching parts 32, in reset arm 27, offer fifth hole 28 and the second slotted hole 29, on the second attaching parts 32, offer the 6th through hole 33 and the 7th through hole 34, on the first roller 30, offer the 8th through hole 31, the d end 21 of the second bent lever 19 is successively through fifth hole 28 and the 6th through hole 33, the second locating dowel pin 35 is arranged in the 6th through hole 33, the 8th through hole 31 and the second slotted hole 29, when locking key 4 engages with locking key limit base 3, the upper semi-circle place of the second locating dowel pin 35 in the second slotted hole 29, the upper semi-circle of the second slotted hole 29 stops the second locating dowel pin 35 upward movements, thereby stop the second attaching parts 32 upward movements, and then stop the second bent lever 19 to take the second rotating shaft 22 as axle left-hand revolution.
In the present embodiment, the second attaching parts 32 is plugged in the groove of the second roller 30, and the second roller 30 is plugged in the groove of reset arm 27, makes the structure of this limiting unit compacter.
The utility model also provides a kind of hopper wagon bottom door, comprises the secondary locking device that the utility model provides, and force arm 10 is first switch gate arms of bottom door, and reset arm 27 is second switch door arms of bottom door.
The hopper wagon bottom door that the utility model provides has the secondary locking device that the utility model provides, when the first switch gate arm, the vibration of second switch door arm cause that power-transfer clutch accidental separation causes the first switch gate arm and second switch door arm to be opened outward, thereby Bringing-back mechanism can make this power-transfer clutch be re-engaged, stop transmission shaft rotation to stop the first switch gate arm, second switch door arm surprisingly to be opened, utilize lanar four rod mechanism to cross the hopper wagon bottom door that dead point opens and closes more reliable when application.
The utility model also provides a kind of hopper car, comprises the hopper wagon bottom door that the utility model provides.
The hopper car that the utility model provides has the hopper wagon bottom door that the utility model provides, and can stop first arm, second arm that opens the door that opens the door surprisingly to be opened, more reliable during application.
The hopper car that the utility model provides is in operational process, under the first switch gate arm opens the door the effect of sloping platform on ground, first the first roller 17 is subject to application force upwards, the first roller 17 drives the first locating dowel pin 13 upward movements, the first locating dowel pin 13 drives the first attaching parts 14 upward movements, the b end 8 of first 14 pairs of attaching partss the first bent lever 7 applies application force upwards, until the first locating dowel pin 13 arrives the upper semi-circle place of the first slotted hole 12, locking key 4 departs from from the keyway of locking key limit base 3, elastomeric element 25 becomes compressive state from extended state, the first transmission shaft 1 is separated with second driving shaft 2, but, when this hopper car inverted running, the application force making progress being applied on the first roller 17 fades away, now, elastomeric element 25 restores from compressive state gradually, the first locating dowel pin 13, the first roller 17 and the first attaching parts 14 are under the effect of self gravitation, drive depression bar 1 to left movement, depression bar 1 drives locking key 4 to left movement then, reinsert in locking key limit base 3, the first transmission shaft 1 and second driving shaft 2 are re-engaged and reset.
The above-described specific embodiment; the purpose of this utility model, technical scheme and beneficial effect are further described; institute is understood that; the foregoing is only the specific embodiment of the present utility model; be not limited to the utility model; all within spirit of the present utility model and principle, any modification of making, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (8)
1. a secondary locking device, it is characterized in that, comprise the first transmission shaft, second driving shaft, power-transfer clutch, pressure mechanism and Bringing-back mechanism, under the pressure-acting of described pressure mechanism, described power-transfer clutch makes described the first transmission shaft separated with second driving shaft, under the effect of described Bringing-back mechanism, described power-transfer clutch engages described the first transmission shaft and second driving shaft.
2. device according to claim 1, it is characterized in that, described power-transfer clutch comprises locking key limit base and locking key, described locking key limit base is fixedly connected on described the first transmission shaft, described locking key is fixedly connected on described second driving shaft, described pressure mechanism can be exerted pressure to described locking key, and described locking key is departed from from the keyway of described locking key limit base, and described the first transmission shaft is separated with second driving shaft; Described Bringing-back mechanism can reinsert in described locking key limit base described locking key to the described locking key application of force, and described the first transmission shaft and second driving shaft are re-engaged and reset.
3. device according to claim 2, it is characterized in that, described pressure mechanism comprises depression bar, the first bent lever, the first rotating shaft, force arm and application of force unit, described depression bar comprises m end and n end, described the first bent lever comprises a end and b end, the m end of described depression bar is articulated with described locking key, the a end of described the first bent lever is connected in the n end of described depression bar, described the first bent lever is connected in force arm by described the first rotating shaft, described application of force unit can apply application force upwards to the b end of described the first bent lever, make described the first bent lever take described the first rotating shaft as axle clickwise, promoting described depression bar moves right, described depression bar applies application force to the right to described locking key, described locking key is departed from from the keyway of described locking key limit base, described the first transmission shaft is separated with second driving shaft.
4. device according to claim 3, it is characterized in that, described application of force unit comprises the first roller, the first locating dowel pin, the first attaching parts, on described force arm, offer the first through hole and the first slotted hole, on described the first attaching parts, offer the second through hole and third through-hole, on described the first roller, offer fourth hole, the b end of described the first bent lever is successively through described the first through hole and described the second through hole, described the first locating dowel pin is arranged in described the second through hole, fourth hole and the first slotted hole, when described the first locating dowel pin is during in described the first slotted hole lower half circle place, the lower edge of described the first roller protrudes from described force arm, described the first roller is applied to application force upwards, described the first roller drives described the first locating dowel pin upward movement, described the first locating dowel pin drives described the first attaching parts upward movement, described the first attaching parts applies application force upwards to the b end of described the first bent lever, until described the first locating dowel pin arrives the upper semi-circle place of described the first slotted hole.
5. device according to claim 4, it is characterized in that, described Bringing-back mechanism comprises pull bar, block piece, elastomeric element, the second bent lever, the second rotating shaft, the 3rd rotating shaft, screw plug, reset arm and limiting unit, described pull bar comprises p end and q end, described the second bent lever comprises c end and d end, the p end of described pull bar is articulated with described locking key, the c that the q end of described pull bar is connected in described the second bent lever by described the 3rd rotating shaft holds, described the second bent lever is connected in reset arm by described the second rotating shaft, in described screw plug, be provided with the q end for described pull bar, the mobile accommodation space of c end of the 3rd rotating shaft and the second bent lever, the described piece that blocks is fixedly connected on described pull bar, described in being fixedly connected on, one end of described elastomeric element blocks piece, the other end of described elastomeric element is fixedly connected on described screw plug, when described locking key engages with described locking key limit base, described reset arm can stop described the second bent lever to take described the second rotating shaft as axle left-hand revolution, now, described elastomeric element is stretching shape.
6. device according to claim 5, described limiting unit comprises the second roller, the second locating dowel pin, the second attaching parts, in described reset arm, offer fifth hole and the second slotted hole, on described the second attaching parts, offer the 6th through hole and the 7th through hole, on described the first roller, offer the 8th through hole, the d end of described the second bent lever is successively through described fifth hole and described the 6th through hole, described the second locating dowel pin is arranged in described the 6th through hole, the 8th through hole and the second slotted hole, when described locking key engages with described locking key limit base, the upper semi-circle place of described the second locating dowel pin in described the second slotted hole, the upper semi-circle of described the second slotted hole stops described the second locating dowel pin upward movement, thereby stop described the second attaching parts upward movement, and then stop described the second bent lever to take described the second rotating shaft as axle left-hand revolution.
7. a hopper wagon bottom door, is characterized in that, comprises the secondary locking device described in claim 5 or 6, and described force arm is the first switch gate arm of described bottom door, and described reset arm is the second switch door arm of described bottom door.
8. a hopper car, is characterized in that, comprises described hopper wagon bottom door claimed in claim 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320724931.7U CN203713880U (en) | 2013-11-15 | 2013-11-15 | Second-stage locking device, hopper car bottom door and hopper car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320724931.7U CN203713880U (en) | 2013-11-15 | 2013-11-15 | Second-stage locking device, hopper car bottom door and hopper car |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203713880U true CN203713880U (en) | 2014-07-16 |
Family
ID=51153059
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320724931.7U Expired - Fee Related CN203713880U (en) | 2013-11-15 | 2013-11-15 | Second-stage locking device, hopper car bottom door and hopper car |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203713880U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103587538A (en) * | 2013-11-15 | 2014-02-19 | 南车长江车辆有限公司 | Secondary locking device, hopper vehicle bottom door and hopper vehicle |
| CN104648414A (en) * | 2015-02-04 | 2015-05-27 | 南车眉山车辆有限公司 | Bottom door locking system of railroad hopper car |
| WO2016070714A1 (en) * | 2014-11-03 | 2016-05-12 | 南车长江车辆有限公司 | Engineering vehicle having ballast unloading device and ballast levelling device |
| CN105644571A (en) * | 2015-12-29 | 2016-06-08 | 齐齐哈尔轨道交通装备有限责任公司 | Hopper car, bottom door opening and closing mechanism and two-stage locking device |
-
2013
- 2013-11-15 CN CN201320724931.7U patent/CN203713880U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103587538A (en) * | 2013-11-15 | 2014-02-19 | 南车长江车辆有限公司 | Secondary locking device, hopper vehicle bottom door and hopper vehicle |
| WO2015070720A1 (en) * | 2013-11-15 | 2015-05-21 | 南车长江车辆有限公司 | Secondary locking device, hopper car bottom door and hopper car |
| CN103587538B (en) * | 2013-11-15 | 2016-08-17 | 中车长江车辆有限公司 | A kind of secondary latch closes device, hopper wagon bottom door and hopper wagon |
| WO2016070714A1 (en) * | 2014-11-03 | 2016-05-12 | 南车长江车辆有限公司 | Engineering vehicle having ballast unloading device and ballast levelling device |
| AU2015342461B2 (en) * | 2014-11-03 | 2018-12-06 | Crrc Yangtze Co., Ltd | Engineering vehicle having ballast unloading device and ballast levelling device |
| US10501096B2 (en) | 2014-11-03 | 2019-12-10 | Crrc Yangtze Co., Ltd. | Engineering vehicle having ballast unloading device and ballast leveling device |
| CN104648414A (en) * | 2015-02-04 | 2015-05-27 | 南车眉山车辆有限公司 | Bottom door locking system of railroad hopper car |
| CN105644571A (en) * | 2015-12-29 | 2016-06-08 | 齐齐哈尔轨道交通装备有限责任公司 | Hopper car, bottom door opening and closing mechanism and two-stage locking device |
| CN105644571B (en) * | 2015-12-29 | 2018-07-03 | 中车齐齐哈尔车辆有限公司 | A kind of hopper wagon, bottom door opening and closing mechanism, two level locking device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203713880U (en) | Second-stage locking device, hopper car bottom door and hopper car | |
| CN103510783A (en) | Opening-closing mechanism with self-locking devices | |
| US10640133B2 (en) | Connecting rod type two-level locking device, hopper car bottom door and hopper car | |
| CN103587538A (en) | Secondary locking device, hopper vehicle bottom door and hopper vehicle | |
| CN203580952U (en) | Connecting rod type two-stage locking device, hopper car bottom door and hopper car | |
| CN201883805U (en) | Electronic mechanical lock for rail transit half-height safety door | |
| CN107514192B (en) | Passive unlocking device for rail vehicle sliding door system | |
| CN103132823B (en) | A kind of automobile right front door lock assembly | |
| CN203515122U (en) | Opening-closing mechanism with self-locking device | |
| CN203462795U (en) | Novel remote control parking space lock | |
| CN103422736A (en) | Lock for a door | |
| CN203230266U (en) | Vehicle back door lock | |
| CN102852405B (en) | manual unlocking device | |
| CN201649875U (en) | Master-slave door bolt lock | |
| CN203129815U (en) | Rotating mechanism of cover plate of box body | |
| CN204370932U (en) | The locking mechanism of top, a kind of novel cabin antenna house | |
| CN202831887U (en) | Manual unlocking device | |
| CN206874085U (en) | A kind of rotating shaft pair locking device | |
| CN203654944U (en) | Lock tongue linkage mechanism of car glove box | |
| CN202593514U (en) | Door opening device for railway side-tip dumper | |
| CN204492454U (en) | A kind of single action is derived from the adjustable delay control device of dynamic multiple leaf door | |
| CN205077996U (en) | Novel electronic lock | |
| CN209567388U (en) | A kind of back door of garbage truck device | |
| CN204738665U (en) | Two linkage structure | |
| CN203022586U (en) | Isolating device used on door system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 430212 Jiangxia Economic Development Zone, Wuhan, the new bridge area of the city of Hubei Patentee after: CRRC YANGTZE CO., LTD. Address before: 430212 Jiangxia Economic Development Zone, Wuhan, the new bridge area of the city of Hubei Patentee before: China South Locomotive & Rolling Stock Changjiang Vehicle Company |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140716 Termination date: 20171115 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |