CA3140930C - Bottom door opening and closing mechanism and hopper car - Google Patents
Bottom door opening and closing mechanism and hopper car Download PDFInfo
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- CA3140930C CA3140930C CA3140930A CA3140930A CA3140930C CA 3140930 C CA3140930 C CA 3140930C CA 3140930 A CA3140930 A CA 3140930A CA 3140930 A CA3140930 A CA 3140930A CA 3140930 C CA3140930 C CA 3140930C
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- crank
- bottom door
- connecting rod
- rotatably connected
- closing mechanism
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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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- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Power-Operated Mechanisms For Wings (AREA)
Abstract
A bottom door opening and closing mechanism and a hopper car. A bottom door (4) of the hopper car is disposed at the bottom of a vehicle body (8) in an openable and closable mode by means of the bottom door opening and closing mechanism; a first end of a first connecting rod (2) of the bottom door opening and closing mechanism is rotatably connected to the bottom of the vehicle body (8); a first end of a second connecting rod (3) is rotatably connected to a second end of the first connecting rod (2); a second end of the second connecting rod (3) is rotatably connected to a first end of a crank (5); a second end of the crank (5) is rotatably connected to the bottom of the vehicle body (8); the middle of the crank (5) is rotatably connected to a first end of a pull rod (6); the second end of the crank (5) is disposed opposite to the first end of the first connecting rod (2); the first end of the crank (5) and the second end of the crank (5) are both located on the same side of the middle of the crank (5); a second end of the pull rod (6) is rotatably connected to the bottom of the bottom door (4); the top of the bottom door (4) is rotatably connected to the vehicle body (8); and a stop block (10) is fixedly disposed on the vehicle body (8), and the stop block (10) is located on the lower side when the crank (5) is located at the position of a dead point.
Description
BOTTOM DOOR OPENING AND CLOSING MECHANISM AND HOPPER CAR
CROSS-REFERENCES TO RELATED APPLICATIONS
[0001] The application claims the priority of the Chinese patent application filed on December 25, 2019, with an application number of 201911357647.9 and a title of "bottom door opening and closing mechanism and hopper car".
TECHNICAL FIELD
CROSS-REFERENCES TO RELATED APPLICATIONS
[0001] The application claims the priority of the Chinese patent application filed on December 25, 2019, with an application number of 201911357647.9 and a title of "bottom door opening and closing mechanism and hopper car".
TECHNICAL FIELD
[0002] The disclosure relates to a technical field of railway wagons, and in particular, to a bottom door opening and closing mechanism and a hopper car.
BACKGROUND OF THE INVENTION
BACKGROUND OF THE INVENTION
[0003] A hopper car with a bottom door is mainly used to transport bulk cargo on railway lines.
After the hopper car arrives at a destination, the bulk cargo are unloaded onto a conveyor belt or into a pit in a manner of bottom unloading.
After the hopper car arrives at a destination, the bulk cargo are unloaded onto a conveyor belt or into a pit in a manner of bottom unloading.
[0004] In the existing technique, an unloading door (referred to as bottom door) at the bottom of the hopper car is generally opened and closed by a bottom door opening and closing mechanism. The bottom door opening and closing mechanism serves as a key component of the railway hopper car, and its security and reliability directly affect the operation safety of the car. At present, the structure of the bottom door opening and closing mechanism of the hopper car is complex in China, and cargo self-unloading occurs when the bottom door and the bottom door opening and closing mechanism is self-opened in the driving process of a car. To prevent the occurrence of cargo self-unloading, manufacturers can guarantee the reliability of the bottom door opening and closing mechanism only by improving the assembling precision, which greatly increases the manufacturing cost.
[0005] In summary, since the structure of the bottom door opening and closing mechanism is complex, it is difficult to further improve the reliability thereof, and therefore safe transportation of cargo and the safe operation of car cannot be ensured.
Date recue/Date received 2023-03-10 SUMMARY OF THE INVENTION
Date recue/Date received 2023-03-10 SUMMARY OF THE INVENTION
[0006] In view of the defects in the existing technique, the disclosure provides a hopper car so as to solve the technical problem in the existing technique of reliability insufficiency caused by the structural complexity of the bottom door opening and closing mechanism of the hopper car.
[0007] In an aspect of the disclosure, a bottom door opening and closing mechanism is provided.
The bottom door opening and closing mechanism may comprise a first connecting rod, a second connecting rod, a crank and a pull rod, each of which having a first end and a second end; wherein the first end of the first connecting rodis rotatably connected to a bottom of a car body; the first end of the second connecting rod is rotatably connected to the second end of the first connecting rod, and the second end of the second connecting rod is rotatably connected to the first end of the crank; the second end of the crank is rotatably connected to the bottom of the car body, and a middle portion of the crank is rotatably connected to the first end of the pull rod; the second end of the crank is disposed opposite to the first end of the first connecting rod, and the first end of the crank and the second end of the crank are both located on a same side of the middle portion of the crank; the second end of the pull rod is rotatably connected to the bottom of a bottom door, and a top of the bottom door is rotatably connected to the car body; a joint of the second end of the pull rod and the bottom of the bottom door and a joint of the top of the bottom door and the car body are both located between the first end of the first connecting rod and the second end of the crank; a joint of the second end of the pull rod and the bottom of the bottom door is located below the second end of the crank; and the bottom door opening and closing mechanism further includes a stop block, and the stop block is fixedly disposed on the car body, and the stop block is located on a lower side of the crank when the crank is located at a dead center position. (that is, the stop block is located at a lower side of the dead center position)
The bottom door opening and closing mechanism may comprise a first connecting rod, a second connecting rod, a crank and a pull rod, each of which having a first end and a second end; wherein the first end of the first connecting rodis rotatably connected to a bottom of a car body; the first end of the second connecting rod is rotatably connected to the second end of the first connecting rod, and the second end of the second connecting rod is rotatably connected to the first end of the crank; the second end of the crank is rotatably connected to the bottom of the car body, and a middle portion of the crank is rotatably connected to the first end of the pull rod; the second end of the crank is disposed opposite to the first end of the first connecting rod, and the first end of the crank and the second end of the crank are both located on a same side of the middle portion of the crank; the second end of the pull rod is rotatably connected to the bottom of a bottom door, and a top of the bottom door is rotatably connected to the car body; a joint of the second end of the pull rod and the bottom of the bottom door and a joint of the top of the bottom door and the car body are both located between the first end of the first connecting rod and the second end of the crank; a joint of the second end of the pull rod and the bottom of the bottom door is located below the second end of the crank; and the bottom door opening and closing mechanism further includes a stop block, and the stop block is fixedly disposed on the car body, and the stop block is located on a lower side of the crank when the crank is located at a dead center position. (that is, the stop block is located at a lower side of the dead center position)
[0008] In some embodiments of the disclosure, the bottom of the car body is provided with a beam body; wherein a middle portion of the beam body is provided with a slotted hole along a length direction of the beam body, and a first connecting seat and a second connecting seat are respectively arranged at a bottom of the beam body; the first connecting seat and the second connecting seat are respectively arranged on two sides of a length direction of the slotted hole, the first end of the first connecting rod being rotatably connected to the first connecting seat, the second connecting rod passing through the slotted hole, and the second end of the crank is rotatably connected to the second connecting seat.
Date Recue/Date Received 202 1-1 1-17
Date Recue/Date Received 202 1-1 1-17
[0009] In some embodiments of the disclosure, a connecting rod shaft is rotatably provided on the first connecting seat, the first end of the first connecting rod being fixedly connected to the connecting rod shaft.
[0010] In some embodiments of the disclosure, two ends of the connecting rod shaft are both provided with a driving block.
[0011] In some embodiments of the disclosure, an axial direction of the connecting rod shaft is a length direction of the car body.
[0012] In some embodiments of the disclosure, the crank includes two opposite clamping plates , first ends of two opposite sides of the two opposite clamping plates being both provided with a first rotating shaft, two first rotating shafts being rotatably connected to two second ends of the second connecting rods respectively, second ends of the two opposite sides of the two opposite clamping plates being both provided with a second rotating shaft, two second rotating shafts being rotatably connected to the second connecting seat, the first end of the pull rod being located between the two clamping plates, and the first end of the pull rod being rotatably connected to a middle portion of the two clamping plates by means of a third rotating shaft.
[0013] In some other embodiments of the disclosure, parts between the first ends and the second ends of the two clamping plates are both provided with a notch.
[0014] In some embodiments of the disclosure, a length of the pull rod is adjustable.
[0015] In another aspect of the disclosure, a hopper car is provided, the hopper car may comprise a car body and a bottom door; the bottom door is disposed at the bottom of the car body in an openable and closable manner by means of a bottom door opening and closing mechanism mentioned above.
[0016] The disclosure has the following advantageous effects:
[0017] The hopper car according to some embodiments of the disclosure, since the bottom door is disposed at the bottom of the car body by means of the bottom door opening and closing mechanism, through controlling the first connecting rod to rotate clockwise or counterclockwise, the crank may be driven by the second connecting rod to rotate within a certain angle around the second end of the crank, so that the height of the middle portion of the crank may be adjusted.
Since the middle portion of the crank is rotatably connected to the first end of the pull rod, the second end of the pull rod is rotatably connected to the bottom of the bottom door, and the top of the bottom door is rotatably connected to the car body, and the height of the middle portion of the crank be changed, resulting in the pull rod drives the bottom door to turn around the connection of the bottom door and the car Date Recue/Date Received 202 1-1 1-17 body, so that the opening and closing of the bottom door is realized. In addition, according to the embodiments of the disclosure, the car body, the first connecting rod, the second connecting rod and the crank may form a four-bar linkage mechanism, while the car body, the crank, the pull rod and the bottom door may form another four-bar linkage mechanism. Therefore, the bottom door opening and closing mechanism according to the embodiments of the disclosure utilizes two four-bar linkage mechanisms to realize the opening and closing of the bottom door, with characteristics of a simple structure and low manufacturing and maintenance costs.
Since the middle portion of the crank is rotatably connected to the first end of the pull rod, the second end of the pull rod is rotatably connected to the bottom of the bottom door, and the top of the bottom door is rotatably connected to the car body, and the height of the middle portion of the crank be changed, resulting in the pull rod drives the bottom door to turn around the connection of the bottom door and the car Date Recue/Date Received 202 1-1 1-17 body, so that the opening and closing of the bottom door is realized. In addition, according to the embodiments of the disclosure, the car body, the first connecting rod, the second connecting rod and the crank may form a four-bar linkage mechanism, while the car body, the crank, the pull rod and the bottom door may form another four-bar linkage mechanism. Therefore, the bottom door opening and closing mechanism according to the embodiments of the disclosure utilizes two four-bar linkage mechanisms to realize the opening and closing of the bottom door, with characteristics of a simple structure and low manufacturing and maintenance costs.
[0018] In some embodiments, a stop block is further provided on the car body.
The stop block is located on the lower side of the crank when the crank is located at the a dead center position. When the crank rotates to the dead center position, even if the crank is driven by an external force, the crank is prevented from rotating due to the limitation of the stop block, thereby preventing the car from self-unloading due to a self-opening of the bottom door during the driving process. As such, the reliability of the car can be improved in order to ensure safe transportation of cargo and the safe operation of the car.
BRIEF DESCRIPTION OF THE DRAWINGS
The stop block is located on the lower side of the crank when the crank is located at the a dead center position. When the crank rotates to the dead center position, even if the crank is driven by an external force, the crank is prevented from rotating due to the limitation of the stop block, thereby preventing the car from self-unloading due to a self-opening of the bottom door during the driving process. As such, the reliability of the car can be improved in order to ensure safe transportation of cargo and the safe operation of the car.
BRIEF DESCRIPTION OF THE DRAWINGS
[0019] In order to illustrate technical solutions in the embodiments of the disclosure more clearly, a brief description is made below to the drawings used in the description of the embodiments.
Apparently, the drawings to be described below are merely some embodiments of the disclosure.
Those of ordinary skill in the art may further obtain other drawings according to these drawings without creative effort.
Apparently, the drawings to be described below are merely some embodiments of the disclosure.
Those of ordinary skill in the art may further obtain other drawings according to these drawings without creative effort.
[0020] FIG. 1 shows a schematic view of an arrangement of a bottom door opening and closing mechanism on a car body according to embodiments of the disclosure;
[0021] FIG. 2 shows a schematic view of the bottom door in a closed state;
[0022] FIG. 3 shows a schematic view of the bottom door in an open state;
[0023] FIG. 4 shows a schematic view of a transmission of the bottom door from a closed state to an open state according to the embodiments of the disclosure;
[0024] FIG. 5 shows a schematic view of a transmission of the bottom door from an open state to a closed state according to the embodiments of the disclosure;
[0025] FIG. 6 shows a structural schematic view of the crank in FIG. 1; and
[0026] FIG. 7 shows a structural schematic view of the pull rod in FIG. 1.
Date Recue/Date Received 202 1-1 1-17 DETAILED DESCRIPTION OF THE INVENTION
Date Recue/Date Received 202 1-1 1-17 DETAILED DESCRIPTION OF THE INVENTION
[0027] Technical solutions in the embodiments of the disclosure will be clearly and completely described in conjunction with the drawings in the embodiments of the disclosure. Obviously, the embodiments to be described are only a portion of rather than all of the embodiments of the disclosure. Based on the embodiments of the disclosure, all other embodiments obtained by those of ordinary skill in the art without creative effort belong to the scope of the disclosure.
[0028] The embodiments of the disclosure provide a hopper car. The hopper car may include a car body and a bottom door. The bottom door is disposed at the bottom of the car body in an openable and closable manner by means of a bottom door opening and closing mechanism, so as to realize opening and closing actions of the bottom door.
[0029] FIG. 1 is a schematic view of an arrangement of the bottom door opening and closing mechanism on a car body according to the embodiments of the disclosure. FIG. 2 is a schematic view of the bottom door in a closed state. FIG. 3 is a schematic view of the bottom door in an open state. With reference to FIG. 1 to FIG. 3, the bottom door opening and closing mechanism of the embodiments of the disclosure includes a stop block 10, and a first connecting rod 2, a second connecting rod 3, a rank 5 and a pull rod, each of which has a first end and a second end.
[0030] With reference to FIG. 1 to FIG. 3, in some embodiments of the disclosure, the first end of the first connecting rod 2 is rotatably connected to a bottom of a car body 8;
the first end of the second connecting rod 3 is rotatably connected to the second end of the first connecting rod 2; the second end of the second connecting rod 3 is rotatably connected to the first end of the crank 5; the second end of the crank 5 is rotatably connected to the bottom of the car body 8; a middle portion of the crank 5 is rotatably connected to the first end of the pull rod 6; the second end of the crank 5 is disposed opposite to the first end of the first connecting rod 2; the first end of the crank 5 and the second end of the crank 5 are both located on a same side of the middle portion of the crank 5, i.e., the crank 5 is in a U-shape as a whole. The second end of the pull rod 6 is rotatably connected to the bottom of a bottom door 4; a top of the bottom door 4 is rotatably connected to the car body 8; a joint of the second end of the pull rod 6 and the bottom of the bottom door 4 and a joint of the top of the bottom door 4 and the car body 8 are both located between the first end of the first connecting rod 2 and the second end of the crank 5; a joint of the second end of the pull rod 6 and the bottom of the bottom door 4 is located below the second end of the crank 5; and the stop block 10 is fixedly disposed on the car body 8, and the stop block 10 is located on a lower side of the crank 5 when the crank 5 is located at a dead center position.
Date Recue/Date Received 202 1-1 1-17
the first end of the second connecting rod 3 is rotatably connected to the second end of the first connecting rod 2; the second end of the second connecting rod 3 is rotatably connected to the first end of the crank 5; the second end of the crank 5 is rotatably connected to the bottom of the car body 8; a middle portion of the crank 5 is rotatably connected to the first end of the pull rod 6; the second end of the crank 5 is disposed opposite to the first end of the first connecting rod 2; the first end of the crank 5 and the second end of the crank 5 are both located on a same side of the middle portion of the crank 5, i.e., the crank 5 is in a U-shape as a whole. The second end of the pull rod 6 is rotatably connected to the bottom of a bottom door 4; a top of the bottom door 4 is rotatably connected to the car body 8; a joint of the second end of the pull rod 6 and the bottom of the bottom door 4 and a joint of the top of the bottom door 4 and the car body 8 are both located between the first end of the first connecting rod 2 and the second end of the crank 5; a joint of the second end of the pull rod 6 and the bottom of the bottom door 4 is located below the second end of the crank 5; and the stop block 10 is fixedly disposed on the car body 8, and the stop block 10 is located on a lower side of the crank 5 when the crank 5 is located at a dead center position.
Date Recue/Date Received 202 1-1 1-17
[0031] According to the above description, in some embodiments of the disclosure, the car body 8, the first connecting rod 2, the second connecting rod 3 and the crank 5 may form a four-bar linkage mechanism, while the car body 8, the crank 5, the pull rod 6 and the bottom door 4 may form another four-bar linkage mechanism. In some embodiments of the disclosure, the bottom door opening and closing mechanism utilizes two four-bar linkage mechanisms to realize the opening and closing of the bottom door, with characteristics of a simple structure and low manufacturing and maintenance costs.
[0032] FIG. 4 is a schematic view of a transmission of the bottom door from a closed state to an open state according to the embodiments of the disclosure. With reference to FIG. 2 and FIG. 4, the first connecting rod 2 is controlled to rotate clockwise, so that the crank 5 can be driven to rotate counterclockwise by means of the second connecting rod 3. The counterclockwise rotation of the crank 5 may cause the middle portion of the crank 5 to be raised, and then the bottom door 4 can be driven to rotate clockwise by means of the pull rod 6, so that an opening action of the bottom door 4 can be realized. When the bottom door opening and closing mechanism crosses the dotted line position (i.e., the "dead center" position of the bottom door opening and closing mechanism) in FIG.
4, the bottom door 4 will quickly be opened due to the dead weight of the bottom door 4 and the pressure of cargo on the bottom door 4, so as to realize the fast unloading of cargo.
4, the bottom door 4 will quickly be opened due to the dead weight of the bottom door 4 and the pressure of cargo on the bottom door 4, so as to realize the fast unloading of cargo.
[0033] FIG. 5 is a schematic view of a transmission of the bottom door from an open state to a closed state according to the embodiments of the disclosure. With reference to FIG. 3 and FIG. 5, the first connecting rod 2 is controlled to rotate counterclockwise, so that the crank 5 is driven to rotate clockwise by means of the second connecting rod 3; the clockwise rotation of the crank 5 may cause the middle portion of the crank 5 to be lowered, and then the bottom door 4 can be driven to rotate counterlockwise by means of the pull rod 6, so that a closing action of the bottom door 4 can be realized. When the bottom door opening and closing mechanism crosses the dotted line position (i.e., the "dead center" position of the bottom door opening and closing mechanism) in FIG. 5, the crank 5 will continue to rotate clockwise due to the dead weight of the bottom door 4 and the continuous counterclockwise rotation of the first connecting rod 2. In order to ensure that the bottom door is in a closed state, a clockwise rotation trend of the crank 5 can be prevented by the stop block10, so as to ensure that the bottom door 4 is always kept in the closed state. Due to the fact that the bottom door opening and closing mechanism crosses the "dead center", the crank 5 can only produce a clockwise rotation trend rather than a clockwise rotation, thus ensuring the reliability of the closed state of the bottom door. In some embodiments, when the crank 5 rotates to the dead center position, even if the Date Recue/Date Received 202 1-1 1-17 crank is driven by an external force, the crank 5 is prevented from rotating due to a limitation of the stop block 10, thereby preventing the car from self-unloading due to a self-opening of the bottom door during the driving process. As such, the reliability of the car can be improved in order to ensure safe transportation of cargo and the safe operation of the car.
[0034] With reference to FIG. 1, in some embodiments of the disclosure, the bottom of the car body 8 may be provided with a beam body 11. A middle portion of the beam body 11 may be provided with a slotted hole 14 along a length direction of the beam body 11, and a first connecting seat 12 and a second connecting seat 13 may be respectively arranged at a bottom of the beam body 11. The first connecting seat 12 and the second connecting seat 13 may be respectively arranged on two sides of a length direction of the slotted hole 14. The first end of the first connecting rod 2 is rotatably connected to the first connecting seat 12, and the second connecting rod 3 passes through the slotted hole 14. The second end of the crank 5 is rotatably connected to the second connecting seat 13. In some embodiments of the disclosure, with the design of the slotted hole 14, mounting space may be provided for the bottom door opening and closing mechanism.
[0035] With reference to FIG. 1, in some embodiments of the disclosure, a connecting rod shaft 9 is rotatably provided on the first connecting seat 12, and the first end of the first connecting rod 2 may be fixedly connected to the connecting rod shaft 9. By driving the connecting rod shaft 9 to rotate, the first connecting rod 2 may be driven to rotate clockwise or counterclockwise.
[0036] In some embodiments of the disclosure, an axial direction of the connecting rod shaft 9 can be a width direction of the car body 8. That is, in some embodiments of the disclosure, the bottom door may be opened along the width direction of the car body 8.
[0037] In some embodiments of the disclosure, when the bottom door is opened along the width direction of the car body 8, the slotted hole 14 may be provided on a middle beam 1 at the bottom of the car body 8, and the first connecting seat 12 and the second connecting seat 13 may also be provided on the middle beam 1.
[0038] In some embodiments of the disclosure, the axial direction of the connecting rod shaft 9 may also be a length direction of the car body 8. That is, in some embodiments of the disclosure, proper deformation may be made under working conditions shown in FIG. 1, so that the bottom door may be opened along the length direction of the car body 8, the disclosure is not limited thereto.
[0039] With reference to FIG. 1, in some embodiments of the disclosure, two ends of the connecting rod shaft 9 may be both provided with a driving block 1. The driving block 1 is used to connect with Date Recue/Date Received 202 1-1 1-17 a component that drives the connecting rod shaft 9 to rotate, such as a rotating motor fixed on the car body, or a manual wrench and the like, so as to realize manual operation.
[0040] In some embodiments of the disclosure, a cross section of the driving block 1 may be a regular polygon, which may be matched with a manual wrench to facilitate manual operation.
[0041] In some embodiments of the disclosure, the second connecting rod 3 may be of a split structure to facilitate installation of the bottom door opening and closing mechanism. During installation, remaining components of the bottom door opening and closing mechanism are firstly installed, the second connecting rod 3 is finally installed, and the second connecting rod 3 of the split structure is fixedly connected into a whole by means of bolts or rivets.
[0042] FIG. 6 is a structural schematic view of the crank in FIG. 1. With reference to FIG. 1 and FIG. 6, in some embodiments of the disclosure, the crank 5 may include two opposite clamping plates 5.1. First ends of two opposite sides of the two opposite clamping plates 5.1 may be both provided with a first rotating shaft 5.2. Two first rotating shafts 5.2 may be rotatably connected to two second ends of the second connecting rods 3 respectively. Accordingly, the first connecting rod 2 may be rotatably provided between two third connecting rods 3, and the crank 5 is driven to rotate by means of one first connecting rod 2 and two the third connecting rods 3.
[0043] In some embodiments of the disclosure, with reference to FIG. 1 and FIG. 6, second ends of the two opposite sides of the two opposite clamping plates 5.1 may be both provided with a second rotating shaft 5.3, respectively. Two second rotating shafts 5.3 are rotatably connected to the second connecting seat 13 to realize the rotatable connection of the crank 5 and the second connecting seat 13.
[0044] In some embodiments of the disclosure, with reference to FIG. 1 and FIG. 6, the first end of the pull rod 6 may be located between the two clamping plates 5.1. The first end of the pull rod 6 may be rotatably connected to a middle portion of the two clamping plates 5.1 by means of a third rotating shaft, so as to realize a rotatable connection of the first end of the pull rod 6 and the crank 5.
[0045] In some embodiments of the disclosure, parts between the first end and the second end of the two clamping plates 5.1 may be both provided with a notch. The notch can be mounted in the crank in a form of embedded pull rod.
[0046] In some embodiments of the disclosure, a length of the pull rod 6 is adjustable. Through the length-adjustable pull rod 6, an opening degree of the bottom door 4 can be adjusted to facilitate maintenance of the bottom door opening and closing mechanism.
Date Recue/Date Received 202 1-1 1-17
Date Recue/Date Received 202 1-1 1-17
[0047] FIG. 7 is a structural schematic view of the pull rod in FIG. 1. With reference to FIG. 7, in some embodiments of the disclosure, the pull rod 6 may include a first rod body 6.1 and a second rod body 6.2, each of which having a first end and a second end. The first end of the first rod body 6.1 is rotatably connected to a middle portion of a rocking handle 5. The second end of the first rod body 6.1 may be threadedly connected in the first end of the second rod body 6.2. The second end of the second rod body 6.2 is rotatably connected to the bottom of the bottom door 4. Through a threaded connection of the first rod body 6.1 and the second rod body 6.2, the length of the pull rod 6 may be adjusted conveniently.
[0048] With reference to FIG. 7, in some embodiments of the disclosure, the first end of the first rod body 6.1 may be provided with a first connecting ring 6.3, and the first connecting ring 6.3 may be rotatably connected to the two clamping plates 5.1 by means of a third rotating shaft. The second end of the second rod body 6.2 may be provided with a second connecting ring 6.4, and the second connecting ring 6.4 is rotatably connected to the bottom of the bottom door 4 by means of a fourth rotating shaft 7.
[0049] The embodiments described above are preferred embodiments of the disclosure, which are used only to facilitate the description of the disclosure, rather than limiting the disclosure in any way. Any equivalent embodiments obtained by those of ordinary skill in the art by modifying or varying the embodiments partially based on the content disclosed in the disclosure without departing from the technical features of the disclosure are still within the scope of the disclosure.
Date Recue/Date Received 2021-11-17
Date Recue/Date Received 2021-11-17
Claims (9)
1 . A bottom door opening and closing mechanism, comprising: a first connecting rod (2), a second connecting rod (3), a crank (5) and a pull rod (6), each having a first end and a second end;
wherein the first end of the first connecting rod (2) is rotatably connected to a bottom of a car body (8);
the first end of the second connecting rod (3) is rotatably connected to the second end of the first connecting rod (2), and the second end of the second connecting rod (3) is rotatably connected to the first end of the crank (5);
the second end of the crank (5) is rotatably connected to the bottom of the car body (8), and a middle portion of the crank (5) is rotatably connected to the first end of the pull rod (6);
the second end of the crank (5) is disposed opposite to the first end of the first connecting rod (2), and the first end of the crank (5) and the second end of the crank (5) are both located on a same side of the middle portion of the crank (5);
the second end of the pull rod (6) is rotatably connected to the bottom of a bottom door (4), and a top of the bottom door (4) is rotatably connected to the car body (8);
a joint of the second end of the pull rod (6) and the bottom of the bottom door (4) and a joint of the top of the bottom door (4) and the car body (8) are both located between the first end of the first connecting rod (2) and the second end of the crank (5);
the joint of the second end of the pull rod (6) and the bottom of the bottom door (4) is located below the second end of the crank (5); and the bottom door opening and closing mechanism further includes a stop block (10), and the stop block (10) is fixedly disposed on the car body (8), and the stop block (10) is located on a lower side of the crank (5) when the crank (5) is located at a dead center position.
wherein the first end of the first connecting rod (2) is rotatably connected to a bottom of a car body (8);
the first end of the second connecting rod (3) is rotatably connected to the second end of the first connecting rod (2), and the second end of the second connecting rod (3) is rotatably connected to the first end of the crank (5);
the second end of the crank (5) is rotatably connected to the bottom of the car body (8), and a middle portion of the crank (5) is rotatably connected to the first end of the pull rod (6);
the second end of the crank (5) is disposed opposite to the first end of the first connecting rod (2), and the first end of the crank (5) and the second end of the crank (5) are both located on a same side of the middle portion of the crank (5);
the second end of the pull rod (6) is rotatably connected to the bottom of a bottom door (4), and a top of the bottom door (4) is rotatably connected to the car body (8);
a joint of the second end of the pull rod (6) and the bottom of the bottom door (4) and a joint of the top of the bottom door (4) and the car body (8) are both located between the first end of the first connecting rod (2) and the second end of the crank (5);
the joint of the second end of the pull rod (6) and the bottom of the bottom door (4) is located below the second end of the crank (5); and the bottom door opening and closing mechanism further includes a stop block (10), and the stop block (10) is fixedly disposed on the car body (8), and the stop block (10) is located on a lower side of the crank (5) when the crank (5) is located at a dead center position.
2. The bottom door opening and closing mechanism as claimed in claim 1, wherein the bottom of the car body (8) is provided with a beam body (1 1 );
wherein a middle portion of the beam body (11) is provided with a slotted hole (14) along a length direction of the beam body (11), and a first connecting seat (12) and a second connecting seat (13) are respectively arranged at a bottom of the beam body (1 1);
the first connecting seat (12) and the second connecting seat (13) are respectively arranged on two sides of a length direction of the slotted hole (14), the first end of the first connecting rod (2) being Date recue/Date received 2023-03-10 rotatably connected to the first connecting seat (12), the second connecting rod (3) passing through the slotted hole (14), and the second end of the crank (5) being rotatably connected to the second connecting seat (13).
wherein a middle portion of the beam body (11) is provided with a slotted hole (14) along a length direction of the beam body (11), and a first connecting seat (12) and a second connecting seat (13) are respectively arranged at a bottom of the beam body (1 1);
the first connecting seat (12) and the second connecting seat (13) are respectively arranged on two sides of a length direction of the slotted hole (14), the first end of the first connecting rod (2) being Date recue/Date received 2023-03-10 rotatably connected to the first connecting seat (12), the second connecting rod (3) passing through the slotted hole (14), and the second end of the crank (5) being rotatably connected to the second connecting seat (13).
3. The bottom door opening and closing mechanism as claimed in claim 2, wherein a connecting rod shaft (9) is rotatably provided on the first connecting seat (12), the first end of the first connecting rod (2) being fixedly connected to the connecting rod shaft (9).
4. The bottom door opening and closing mechanism as claimed in claim 3, wherein two ends of the connecting rod shaft (9) are both provided with a driving block (1).
5. The bottom door opening and closing mechanism as claimed in claim 3, wherein an axial direction of the connecting rod shaft (9) is a length direction of the car body (8).
6. The bottom door opening and closing mechanism as claimed in claim 2, wherein the crank (5) includes two opposite clamping plates (5.1), first ends of two opposite sides of the two opposite clamping plates (5.1) being both provided with a first rotating shaft (5.2), two first rotating shafts (5.2) being rotatably connected to two second ends of the second connecting rods (3) respectively, second ends of the two opposite sides of the two opposite clamping plates (5.1) being both provided with a second rotating shaft (5.3), two second rotating shafts (5.3) being rotatably connected to the second connecting seat (13), the first end of the pull rod (6) being located between the two clamping plates (5.1), and the first end of the pull rod (6) being rotatably connected to a middle portion of the two clamping plates (5.1) by means of a third rotating shaft.
7. The bottom door opening and closing mechanism as claimed in claim 6, wherein parts between the first ends and the second ends of the two clamping plates (5.1) are both provided with a notch.
8. The bottom door opening and closing mechanism as claimed in claim 2, wherein a length of the pull rod (6) is adjustable.
Date recue/Date received 2023-03-10
Date recue/Date received 2023-03-10
9. A hopper car, comprising: a car body (8) and a bottom door (4); the bottom door (4) being disposed at the bottom of the car body (8) in an openable and closable manner by means of a bottom door opening and closing mechanism according to any one of claims 1 to 8.
Date recue/Date received 2023-03-10
Date recue/Date received 2023-03-10
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911357647.9A CN111038534B (en) | 2019-12-25 | 2019-12-25 | Bottom door opening and closing mechanism and hopper car |
| CN201911357647.9 | 2019-12-25 | ||
| PCT/CN2020/099703 WO2021128790A1 (en) | 2019-12-25 | 2020-07-01 | Bottom door opening and closing mechanism and hopper car |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA3140930A1 CA3140930A1 (en) | 2021-07-01 |
| CA3140930C true CA3140930C (en) | 2023-07-18 |
Family
ID=70239600
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA3140930A Active CA3140930C (en) | 2019-12-25 | 2020-07-01 | Bottom door opening and closing mechanism and hopper car |
Country Status (4)
| Country | Link |
|---|---|
| CN (1) | CN111038534B (en) |
| CA (1) | CA3140930C (en) |
| MX (1) | MX2022006942A (en) |
| WO (1) | WO2021128790A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111038534B (en) * | 2019-12-25 | 2023-06-27 | 中车长江车辆有限公司 | Bottom door opening and closing mechanism and hopper car |
| CN114620080B (en) * | 2022-03-18 | 2023-09-08 | 中车太原机车车辆有限公司 | Railway hopper car unloading mechanism for unloading in and out of track and hopper car |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103085823B (en) * | 2011-10-28 | 2015-07-08 | 齐齐哈尔轨道交通装备有限责任公司 | Bottom door handling mechanism, bottom door device and bottom-door hopper car |
| CN103552567A (en) * | 2013-11-15 | 2014-02-05 | 南车长江车辆有限公司 | Locking devices and vehicle bottom doors |
| CN204150041U (en) * | 2014-10-15 | 2015-02-11 | 南车眉山车辆有限公司 | A kind of unidirectional automatic unloading hopper car |
| CN106627609B (en) * | 2016-11-23 | 2018-11-16 | 晋西铁路车辆有限责任公司 | A kind of hopper wagon that locking bottom is opened the door |
| US10648217B2 (en) * | 2017-04-19 | 2020-05-12 | National Steel Car Limited | Railroad hopper car body fittings |
| CN106926850B (en) * | 2017-04-24 | 2018-10-26 | 中车眉山车辆有限公司 | A kind of automobile-used rail mounted list fan bottom door independent control easing gear of railroad hopper |
| CN109625010A (en) * | 2018-11-20 | 2019-04-16 | 中车太原机车车辆有限公司 | Hopper wagon bottom door switching mechanism |
| CN111038535B (en) * | 2019-12-25 | 2021-04-13 | 中车长江车辆有限公司 | Locking device and hopper car |
| CN111038534B (en) * | 2019-12-25 | 2023-06-27 | 中车长江车辆有限公司 | Bottom door opening and closing mechanism and hopper car |
| CN111038533B (en) * | 2019-12-25 | 2021-03-23 | 中车长江车辆有限公司 | Auxiliary opening device for bottom door and hopper car |
-
2019
- 2019-12-25 CN CN201911357647.9A patent/CN111038534B/en active Active
-
2020
- 2020-07-01 CA CA3140930A patent/CA3140930C/en active Active
- 2020-07-01 MX MX2022006942A patent/MX2022006942A/en unknown
- 2020-07-01 WO PCT/CN2020/099703 patent/WO2021128790A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| CN111038534A (en) | 2020-04-21 |
| WO2021128790A1 (en) | 2021-07-01 |
| MX2022006942A (en) | 2022-07-11 |
| CN111038534B (en) | 2023-06-27 |
| CA3140930A1 (en) | 2021-07-01 |
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