CN113665603B - Railway hopper car track inboard unloading bottom door closing mechanism - Google Patents
Railway hopper car track inboard unloading bottom door closing mechanism Download PDFInfo
- Publication number
- CN113665603B CN113665603B CN202111044038.5A CN202111044038A CN113665603B CN 113665603 B CN113665603 B CN 113665603B CN 202111044038 A CN202111044038 A CN 202111044038A CN 113665603 B CN113665603 B CN 113665603B
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- door
- door opening
- trigger block
- trigger
- hopper car
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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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T30/00—Transportation of goods or passengers via railways, e.g. energy recovery or reducing air resistance
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- Power-Operated Mechanisms For Wings (AREA)
Abstract
The invention discloses an unloading bottom door opening and closing mechanism on the inner side of a railway hopper car track, which comprises: the hopper car bottom door opening and closing mechanism is advanced in principle, simple in structure, free of wind source, capable of achieving side-walking unloading and high unloading efficiency, and solves the problem that the bottom door cannot be closed effectively in time when the hopper car operates in a wind control system.
Description
Technical Field
The invention belongs to the technical field of wagon bottom doors, and particularly relates to an unloading bottom door opening and closing mechanism on the inner side of a railway hopper wagon track.
Background
Existing coal hopper cars exceed lower limits when the bottom door is open, and therefore the bottom door must be closed when the car is marshalled and moved within a factory, mine, or station. When unloading is not performed at fixed points, the line condition of the unloading section should be checked in advance, and all facilities at the unloading site must not intrude into the limit of the rolling stock. When the vehicle unloads on a curve with the radius of 250m or less, the lower connecting rod of the coal hopper car can contact with the wheels when the bottom door is opened due to the large torsion of the bogie relative to the car body and the factors such as installation error, so when the route of the unloading section is the curve, the distance between the lower connecting rod and the inner side surface of the wheel is checked in advance, and the unloading can not be carried out on the route without unloading condition.
Disclosure of Invention
The invention aims to provide a bottom door opening and closing mechanism for unloading at the inner side of a railway hopper car track, which has advanced principle and simple structure, does not need a wind source, can realize the efficiency of unloading while walking, solves the problem that the bottom door cannot be effectively closed in time when a wind control system works, realizes the self-locking function of a door opening state and a door closing state, ensures the opening and closing of the bottom door to be effective in time, eliminates the potential safety hazard of cargo leakage, and ensures the operation and driving safety.
In order to achieve the above object, the present invention provides an inside unloading bottom door opening and closing mechanism for a railway hopper car track, comprising:
the driving shaft is rotatably arranged at the bottom of the hopper car;
the two bottom doors are respectively arranged on two sides of the driving shaft;
the arc-shaped edge of the fan-shaped support is connected with the bottom door, and the circle center of the fan-shaped support is hinged with the bottom of the hopper car;
the duplex lever is in a diamond shape, and the middle part of the duplex lever is connected with the driving shaft;
the two ends of the two connecting rods are respectively hinged with one side of the two fan-shaped supports close to the driving shaft;
the transmission shaft is matched with the driving shaft through a transmission mechanism, and a trigger rod is arranged on the transmission shaft;
the trigger block is arranged on a railway track and can drive the trigger rod to drive the transmission shaft to rotate along with the advancing of the hopper car.
Optionally, when the two bottom doors are opened, an included angle between the duplex lever and the ground is an acute angle, the two connecting rods are C-shaped, and when the bottom doors are closed, the two connecting rods are respectively positioned on two sides of the transmission shaft, so that the two bottom doors can be self-locked by gravity; when the bottom door is opened, the two connecting rods pass through dead points, and connecting lines of the connecting rods and the duplex lever and connecting points of the connecting rods and the fan-shaped support do not pass through the axis of the transmission shaft.
Optionally, the trigger block comprises a door opening trigger block and a door closing trigger block;
the trigger bar comprises a door opening trigger bar and a door closing trigger bar, the door opening trigger bar and the door closing trigger bar are respectively arranged at two ends of the transmission shaft and are respectively matched with the door opening trigger block and the door closing trigger block.
Optionally, the door opening trigger lever and the door closing trigger lever are mirror structures and comprise a transmission rod and a pulley, the transmission rod is L-shaped, one end of the transmission rod is connected with the transmission shaft, and the pulley is arranged at the other end of the transmission rod.
Optionally, one end of the door opening trigger block and one end of the door closing trigger block, which are far away from the advancing direction of the hopper car, are rotatably connected with the ground, and one end of the door opening trigger block and one end of the door closing trigger block, which are close to the advancing direction of the hopper car, are provided with compression springs.
Optionally, the transmission mechanism includes a gearwheel and a pinion, which are respectively disposed on the transmission shaft and the driving shaft and engaged with each other;
and a 45-degree included angle is formed between the door opening trigger rod and the door closing trigger rod, and the gear ratio of the large gear to the small gear is 1.
Optionally, the connecting rod includes long arc portion, transition portion and the short arc portion that connects gradually, the one end and the bottom door of long arc portion are connected, the one end of short arc portion with two connecting rods are connected.
Optionally, the door opening trigger block and the door closing trigger block are symmetrically arranged on two sides of a railway, and the door opening trigger rod and the door closing trigger rod are respectively and simultaneously connected with the door opening trigger block and the door closing trigger block during use.
Optionally, the thicknesses of the door opening trigger block and the door closing trigger block are greater than the axial lengths of the pulleys, and the pulleys are located on center lines of the door opening trigger block and the door closing trigger block.
Optionally, a handle is arranged at one end of the driving shaft, the handle can stretch out and draw back, and the handle is located on one side, away from the driving shaft, of the door closing trigger block.
The invention provides an unloading bottom door opening and closing mechanism on the inner side of a railway hopper car track, which has the beneficial effects that:
1. the bottom door opening and closing mechanism is advanced in principle, simple in structure, free of wind sources, capable of achieving walking and unloading at the same time, high in unloading efficiency, capable of solving the problem that a bottom door of a hopper car cannot be effectively closed in time when a wind control system operates, capable of achieving the self-locking function of the door opening state and the door closing state, enabling the bottom door to be opened and closed effectively in time, eliminating potential safety hazards caused by leakage of goods, and capable of guaranteeing operation and driving safety.
2. The bottom door opening and closing mechanism is suitable for the positions of all facilities in unloading places where all facilities cannot intrude into the limit of rolling stock and the environment when the rolling stock is on a curve with the curve radius below 250m, and can automatically open and close the bottom door timely and effectively.
Additional features and advantages of the invention will be set forth in the detailed description which follows.
Drawings
The above and other objects, features and advantages of the present invention will become more apparent by describing in more detail exemplary embodiments thereof with reference to the attached drawings, in which like reference numerals generally represent like parts throughout.
Fig. 1 shows a schematic structural view of a railway hopper car track inside discharge bottom door opening and closing mechanism according to one embodiment of the present invention.
Figure 2 illustrates a side view of a railway hopper car track inside discharge bottom door opening and closing mechanism according to one embodiment of the present invention.
Fig. 3 is a schematic diagram illustrating a fully opened self-locking condition of a railroad hopper car track inside discharge bottom door opening and closing mechanism, according to one embodiment of the present invention.
Figure 4 illustrates a top view of a mechanically triggered mechanism closing a bottom door of a railroad hopper car track inside discharge bottom door opening and closing mechanism, according to one embodiment of the present invention.
Figure 5 illustrates a mechanical trigger-type mechanism for closing the bottom door of a railroad hopper car track inboard discharge bottom door opening and closing mechanism in accordance with one embodiment of the present invention.
Figure 6 illustrates a top view of a mechanically triggered mechanism opening bottom door of a railroad hopper car track inside discharge bottom door opening and closing mechanism, according to one embodiment of the present invention.
Figure 7 illustrates a mechanical trigger-type mechanism for opening the bottom door of a railroad hopper car track inboard discharge bottom door opening and closing mechanism in accordance with one embodiment of the present invention.
Fig. 8 shows a schematic structural view of the door opening trigger block of the inside discharge bottom door opening and closing mechanism of the railway hopper car track according to one embodiment of the invention.
Figure 9 is a schematic diagram illustrating a door closing trigger block of an inside discharge bottom door opening and closing mechanism for a railroad hopper car track according to one embodiment of the present invention.
Description of reference numerals:
1. a drive shaft; 2. a bottom door; 3. a duplex lever; 4. a connecting rod; 5. a bull gear; 6. a pinion gear; 7. a drive shaft; 8. a door opening trigger block; 9. a door closing trigger block; 10. a door opening trigger lever; 11. a door closing trigger lever; 12. a handle.
Detailed Description
Preferred embodiments of the present invention will be described in more detail below. While the following describes preferred embodiments of the present invention, it should be understood that the present invention may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
FIG. 1 is a schematic illustration of a railway hopper car track inside discharge bottom door opening and closing mechanism according to one embodiment of the present invention; FIG. 2 illustrates a side view of a railway hopper car track inside discharge bottom door opening and closing mechanism in accordance with one embodiment of the present invention; FIG. 3 is a schematic structural view illustrating a fully opened self-locking condition of a railroad hopper car track inside discharge bottom door opening and closing mechanism in accordance with one embodiment of the present invention; FIG. 4 illustrates a top view of a mechanically triggered mechanism closing bottom door of a railroad hopper car track inside discharge bottom door opening and closing mechanism, according to an embodiment of the present invention; FIG. 5 is a schematic illustration of a mechanically triggered mechanism closing the bottom door for a railroad hopper car track inboard discharge bottom door opening and closing mechanism in accordance with an embodiment of the present invention; FIG. 6 illustrates a top view of a mechanically triggered mechanism opening bottom door of a railroad hopper car track inside discharge bottom door opening and closing mechanism, according to an embodiment of the present invention; FIG. 7 is a schematic illustration of a mechanically triggered mechanism for opening a bottom door of a railroad hopper car track inboard discharge bottom door opening and closing mechanism, according to an embodiment of the present invention; FIG. 8 is a schematic structural view of the door opening trigger block of the inside discharge bottom door opening and closing mechanism for a railroad hopper car track according to one embodiment of the present invention; figure 9 is a schematic diagram illustrating a door closing trigger block of an inside discharge bottom door opening and closing mechanism for a railroad hopper car track according to one embodiment of the present invention.
As shown in fig. 1-9, an inside discharge bottom door opening and closing mechanism for a railroad hopper car track comprises:
the driving shaft 1 is rotatably arranged at the bottom of the hopper car;
the two bottom doors 2 are respectively arranged at two sides of the driving shaft 1;
the arc-shaped edge of the fan-shaped bracket is connected with the bottom door 2, and the circle center of the fan-shaped bracket is hinged with the bottom of the hopper car;
the duplex lever 3 is rhombic, and the middle part of the duplex lever 3 is connected with the driving shaft 1;
one ends of the two connecting rods 4 are respectively hinged to two ends of the dual-linkage lever 3, and two ends of the two connecting rods 4 are respectively hinged to one sides of the two fan-shaped supports, which are close to the driving shaft 1;
the transmission shaft 7 is matched with the driving shaft 1 through a transmission mechanism, and a trigger rod is arranged on the transmission shaft 7;
the trigger block is arranged on the railway track and can drive the trigger rod to drive the transmission shaft to rotate along with the advancing of the hopper car.
In the embodiment, when the two bottom doors 2 are opened, the included angle between the duplex lever 3 and the ground is an acute angle, the two connecting rods 4 are C-shaped, and when the bottom doors 2 are closed, the two connecting rods 4 are respectively positioned at two sides of the transmission shaft 1, so that the two bottom doors 2 can be self-locked by gravity; when the bottom door is opened, the two connecting rods 4 pass through dead points, and the connecting lines of the connecting rods 4, the dual-link lever 3 and the hinged points of the connecting rods 4 and the fan-shaped bracket do not pass through the axle center of the transmission shaft 1. Specifically, a duplex lever 3 is matched with two C-shaped connecting rods 4 to form a self-locking state, so that the bottom door 2 is respectively self-locked and limited when being opened and closed, a trigger rod is contacted with a trigger block in the process of advancing of the hopper car to enable the trigger rod to drive a transmission shaft 7 to rotate, a transmission mechanism enables a driving shaft 1 to rotate, the driving shaft 1 rotates to drive the duplex lever 3 to drive the connecting rods 4 to drive the bottom door 2 to be opened and closed, the hopper car can automatically open the bottom door 2 at a corresponding position in the unloading process, the bottom door 2 is automatically closed when leaving after the unloading is completed, manual operation is not needed, and the hopper car is prevented from entering a vehicle limit range.
In this embodiment, the trigger blocks include a door opening trigger block 8 and a door closing trigger block 9;
the trigger lever includes the trigger lever 10 that opens the door and closes the door trigger lever 11, and the trigger lever 10 that opens the door and the trigger lever 11 that closes the door set up respectively at the both ends of transmission shaft 7, respectively with open the door trigger block 8 and close the door trigger block 9 cooperation.
Specifically, the bottom door 2 is opened through the matching of the door opening trigger rod 10 and the door opening trigger block 8, and the bottom door 2 is closed through the matching of the door closing trigger rod 11 and the door closing trigger block 9.
In this embodiment, the door opening trigger lever 10 and the door closing trigger lever 11 are mirror images, and include a transmission rod and a pulley, the transmission rod is L-shaped, one end of the transmission rod is connected to the transmission shaft 7, and the other end of the transmission rod is provided with the pulley.
Specifically, sliding friction is changed into rotating friction through the pulley, friction consumption is reduced, and service life is prolonged.
In the embodiment, one ends of the door opening trigger block 8 and the door closing trigger block 9, which are far away from the advancing direction of the hopper car, are rotatably connected with the ground, and one ends, which are close to the advancing direction of the hopper car, are provided with compression springs.
Specifically, a compression spring is used for buffering and avoiding the trigger rod;
the trigger bar 10 that opens the door contacts with the trigger block 8 that opens the door, stir transmission shaft 7 gradually and rotate, the one end small range of trigger block 8 that opens the door simultaneously rotates, compression spring simultaneously, both guarantee to open the bottom door 2, avoid the trigger bar 10 that opens the door again and the trigger block 8 rigid collision that opens the door, the trigger bar 11 that closes the door with close the door trigger block 9 and dodge equally, the height that reduces the trigger block makes the trigger bar pass through safely, and then adapt to the vehicle use of different weight height, through 2 switchs of bottom door of the different weight vehicles of trigger block control.
In the embodiment, the transmission mechanism comprises a large gear 5 and a small gear 6, and the large gear 5 and the small gear 6 are respectively arranged on the transmission shaft 7 and the driving shaft 1 and are meshed with each other;
an included angle of 45 degrees is arranged between the door opening trigger rod 10 and the door closing trigger rod 11, and the gear ratio of the large gear 5 to the small gear 6 is 1.
Specifically, the transmission ratio of the transmission shaft 7 to the driving shaft 1 and the transmission ratio of the large gear 5 to the small gear 6 are adjusted to enable the driving shaft 1 to rotate 180 degrees when the transmission shaft 7 rotates not more than 45 degrees, and then the transmission shaft 7 drives the large gear 5 to drive the small gear 6 to drive the driving shaft 1 to rotate.
In this embodiment, the connecting rod 4 includes the long arc portion, transition portion and the short arc portion that connect gradually, and the one end and the bottom door 2 of long arc portion are connected, and the one end and the two connecting rod 4 of short arc portion are connected.
Specifically, the long arc part, the transition part and the short arc part are sequentially connected to form a connecting rod 4, and the short arc part wraps the dual lever 3 from two sides to perform mechanical self-locking when the bottom door 2 is opened.
In this embodiment, the door opening trigger block 8 and the door closing trigger block 9 are symmetrically arranged on two sides of the railway, and the door opening trigger rod 10 and the door closing trigger rod 11 are respectively and simultaneously connected with the door opening trigger block 8 and the door closing trigger block 9 during use.
In this embodiment, the thickness of the door opening trigger block 8 and the door closing trigger block 9 is greater than the axial length of the pulley, and the pulley is located on the center line of the door opening trigger block 8 and the door closing trigger block 9.
In particular, the contact stability of the pulley with the door opening trigger block 8 and the door closing trigger block 9 is ensured.
In the embodiment, one end of the driving shaft 1 is provided with a handle 12, the handle 12 can be extended and retracted, and the handle 12 is positioned on one side of the door closing trigger block 9 away from the driving shaft 1.
Specifically, the driving shaft 1 is operated by the handle 12 to open and close the bottom door 2, so that the door is simple and convenient.
When this embodiment railway freight car bottom-opening door opening and closing mechanism used, use the fixed point to reverse a car and unload as an example:
when the bottom door 2 is manually opened, force is transmitted to the transmission shaft 7 through the operating handle 12, the transmission shaft 7 drives the connecting rod 4 to move through the dual-link lever 3, so that the bottom doors 2 on two sides of the transmission shaft 7 are driven to be opened simultaneously, the handle 12 needs to rotate 180 degrees around the transmission shaft 7, the bottom door 2 can be completely opened and reaches the position of a dead point passing position shown in figure 3, self-locking in a door opening state is realized, the handle 12 is operated after unloading is completed, the bottom door 2 can be completely closed by reversely rotating 180 degrees through the handle 12, and the gravity self-locking state of the bottom door 2 is realized;
when the bottom door 2 is opened, as shown in fig. 6-7, when the vehicle runs to an unloading area, a roller positioned on the door opening trigger rod 10 can touch the door opening trigger block 8 installed on the ground along with the advance of the vehicle, the vehicle continues to move forwards, the door opening trigger rod 10 can be lifted according to the shape of the door opening trigger block 8, so that the transmission shaft 7 is driven to rotate, the large gear 5 installed on the transmission shaft 7 can rotate along with the vehicle, the small gear 6 is further driven to rotate, the driving shaft 1 is driven to rotate, the driving shaft 1 can drive the connecting rod 4 to move through the dual-link lever 3, so that the two bottom doors 2 are driven to be opened simultaneously, through setting the transmission ratio of the large gear 5 and the small gear 6 and the distance between the transmission shaft 7 and the driving shaft 1, the transmission shaft 7 can rotate 180 degrees when the rotation angle theta of the driving shaft 1 is not more than 45 degrees, the complete opening and closing of the bottom door 2 is realized, the dead point position is reached, the door opening self-locking state is realized, the vehicle continues to run, goods can be automatically unloaded, and the function of unloading while walking is realized;
when the bottom doors 2 are closed, as shown in fig. 4-5, after the vehicle finishes unloading and exits from the unloading area, the rollers positioned on the door closing trigger bar 11 can touch the door closing trigger block 9 installed on the ground along with the advance of the vehicle, the vehicle continues to move forward, the door closing trigger bar 11 can be lifted according to the shape of the door closing trigger block 9, so as to drive the transmission shaft 7 to rotate, the gear wheel 5 installed on the transmission shaft 7 can rotate along with the gear wheel, further drive the pinion 6 to rotate, further drive the driving shaft 1 to rotate, the driving shaft 1 can drive the connecting rod 4 to move through the dual lever 3, so as to drive the two bottom doors 2 to be closed simultaneously, after the bottom doors 2 are completely closed, the bottom doors 2 can reach a gravity self-locking state, and the function of timely closing the bottom doors 2 after the goods are unloaded is realized.
Having described embodiments of the present invention, the foregoing description is intended to be exemplary, not exhaustive, and not limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments.
Claims (5)
1. The utility model provides a railway hopper car track inboard unloading bottom door closing mechanism which characterized in that includes:
the driving shaft is rotatably arranged at the bottom of the hopper car;
the two bottom doors are respectively arranged on two sides of the driving shaft;
the arc-shaped edge of the fan-shaped support is connected with the bottom door, and the circle center of the fan-shaped support is hinged with the bottom of the hopper car;
the duplex lever is in a diamond shape, and the middle part of the duplex lever is connected with the driving shaft;
one ends of the two connecting rods are respectively hinged to two ends of the duplex lever, and the other ends of the two connecting rods are respectively hinged to one sides, close to the driving shaft, of the two fan-shaped supports;
the transmission shaft is matched with the driving shaft through a transmission mechanism, and a trigger rod is arranged on the transmission shaft;
the trigger block is arranged on a railway track and can drive the trigger rod to drive the transmission shaft to rotate along with the advancing of the hopper car;
when the two bottom doors are opened, an included angle between the duplex lever and the ground is an acute angle, the two connecting rods are C-shaped, and when the bottom doors are closed, the two connecting rods are respectively positioned on two sides of the driving shaft, so that the two bottom doors can be self-locked by gravity; when the bottom door is opened, the two connecting rods pass through dead points, and connecting lines of the connecting rods and the duplex lever and connecting points of the connecting rods and the fan-shaped support do not pass through the axis of the driving shaft;
the trigger block comprises a door opening trigger block and a door closing trigger block;
the trigger rod comprises a door opening trigger rod and a door closing trigger rod, the door opening trigger rod and the door closing trigger rod are respectively arranged at two ends of the transmission shaft and are respectively matched with the door opening trigger block and the door closing trigger block;
the transmission mechanism comprises a large gear and a small gear, and the large gear and the small gear are respectively arranged on the transmission shaft and the driving shaft and are meshed with each other;
an included angle of 45 degrees is formed between the door opening trigger rod and the door closing trigger rod, and the gear ratio of the large gear to the small gear is 1;
the door opening trigger lever and the door closing trigger lever are mirror image structures and comprise a transmission rod and a pulley, the transmission rod is L-shaped, one end of the transmission rod is connected with the transmission shaft, and the other end of the transmission rod is provided with the pulley;
the door opening trigger block and the door closing trigger block are symmetrically arranged on two sides of a railway, and the door opening trigger rod and the door closing trigger rod are respectively and simultaneously connected with the door opening trigger block and the door closing trigger block during use.
2. The inside unloading bottom door opening and closing mechanism for the railway hopper car track as claimed in claim 1, wherein the ends of the door opening trigger block and the door closing trigger block away from the advancing direction of the hopper car are rotatably connected with the ground, and a compression spring is arranged at the end close to the advancing direction of the hopper car.
3. The inside discharge bottom door opening and closing mechanism for railway hopper car tracks as claimed in claim 1, wherein said linkage comprises a long arc portion, a transition portion and a short arc portion connected in sequence, one end of said long arc portion being connected to said bottom door and one end of said short arc portion being connected to said duplex lever.
4. The inside discharge bottom door opening and closing mechanism for a railroad hopper car track of claim 1, wherein the thickness of said door opening trigger block and said door closing trigger block is greater than the axial length of said pulley located on the centerline of said door opening trigger block and said door closing trigger block.
5. The inside unloading bottom door opening and closing mechanism for the railway hopper car track as claimed in claim 1, wherein a handle is provided at one end of the driving shaft, the handle is capable of telescoping, and the handle is located at one side of the door closing trigger block away from the driving shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111044038.5A CN113665603B (en) | 2021-09-07 | 2021-09-07 | Railway hopper car track inboard unloading bottom door closing mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111044038.5A CN113665603B (en) | 2021-09-07 | 2021-09-07 | Railway hopper car track inboard unloading bottom door closing mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113665603A CN113665603A (en) | 2021-11-19 |
| CN113665603B true CN113665603B (en) | 2023-04-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111044038.5A Active CN113665603B (en) | 2021-09-07 | 2021-09-07 | Railway hopper car track inboard unloading bottom door closing mechanism |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116811935B (en) * | 2023-08-30 | 2023-11-17 | 四川省冶金设计研究院 | Ore conveying device |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU741224B2 (en) * | 1997-05-30 | 2001-11-29 | Edi Rail Pty Ltd | Railway wagon discharge system |
| WO2004069625A2 (en) * | 2003-02-03 | 2004-08-19 | Taylor Fred J | Manual railroad hopper car door actuating mechanism |
| RU2251506C2 (en) * | 2003-07-08 | 2005-05-10 | Закрытое акционерное общество "Управляющая компания "Брянский машиностроительный завод" (ЗАО "УК "БМЗ") | Hopper-car discharge hatch cover opening and closing device |
| CN104228855A (en) * | 2014-09-05 | 2014-12-24 | 南车长江车辆有限公司 | Bottom door opening and closing system for railroad hopper car |
| CN105539469A (en) * | 2015-12-25 | 2016-05-04 | 中车长江车辆有限公司 | Railway coal transportation hopper car body and hopper car |
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