Bottom opening door broad gauge vehicle with self-lubricating type double door locking structure

Abstract

The invention discloses a bottom-opening wide gauge car with a self-lubricating double-door-locking structure, which comprises a frame, a car box and a swing bolster are respectively mounted at the upper end and the lower end of the frame, a wheel pair is mounted on the swing bolster, and a bottom door with a double-opening structure is arranged at the bottom of the car box. An L-shaped plate used for supporting the bottom door in an open state is installed on the frame, a first lock head with a hooking part is rotationally arranged on the frame, a contact part matched with the hooking part is arranged on the bottom door, a second lock head is rotationally arranged on the frame through a rotating shaft, the second lock head is arranged to be in a fan shape, and the first lock head and the second lock head are connected through a connecting rod. The outer wall of the second lock head is in contact with the outer wall of the first lock head; a self-lubricating structure is further arranged. The wide gauge vehicle is provided with a double locking structure, the risk of accidental unlocking is reduced, the fault tolerance of the system is enhanced, meanwhile, a self-lubricating structure is arranged and used for lubricating the contact face between the first lock head and the second lock head, and the service life of parts is prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of wide - gauge vehicles, and particularly to a bottom - opening wide - gauge vehicle with a self - lubricating double - door locking structure. Background Art

[0002] A bottom - opening wide - gauge vehicle is a vehicle with a funnel - shaped door that can be opened at the bottom, and realizes rapid unloading through pneumatic, manual or car dumper control methods. When unloading, materials are discharged from the bottom of the vehicle by gravity, and the efficiency is significantly higher than the traditional manual or mechanical loading and unloading methods.

[0003] The existing bottom - opening wide - gauge vehicles generally lock the bottom plate through a lock head with a hook - hanging part (the lock head is rotatably arranged on the vehicle frame, and forms a hook - hanging support for the bottom plate by using the hook - hanging part). When the wide - gauge vehicle travels on a bumpy road, it is easy for the lock head to become loose due to vibration or impact, and the risk of unlocking is greatly increased. Therefore, the present application provides a bottom - opening wide - gauge vehicle with a self - lubricating double - door locking structure to meet the requirements. Summary of the Invention

[0004] The purpose of the present application is to provide a bottom - opening wide - gauge vehicle with a self - lubricating double - door locking structure, which is used to solve the problem that the single - locking structure in the existing technology is prone to increase the risk of automatic unlocking.

[0005] To achieve the above purpose, the present application provides the following technical solutions: A bottom - opening wide - gauge vehicle with a self - lubricating double - door locking structure, including a vehicle frame, a carriage and a bolster are respectively installed at the upper and lower ends of the vehicle frame, wheel sets are installed on the bolster, a double - opening bottom door is arranged at the bottom of the carriage, an L - shaped plate for supporting the opened bottom door is installed on the vehicle frame, a first lock head with a hook - hanging part is rotatably arranged on the vehicle frame, a contact part adapted to the hook - hanging part is arranged on the bottom door, a second lock head is rotatably arranged on the vehicle frame through a rotating shaft, the second lock head is set as a sector, and the outer wall of the second lock head is in contact with the outer wall of the first lock head; The outer wall of the second lock head is set as an arc, and an arc - shaped groove is arranged on the outer wall of the first lock head corresponding to the arc of the outer wall of the second lock head; Both the first lock head and the second lock head are rotatably arranged on a mounting plate, and the mounting plate is fixedly installed on the vehicle frame; A stop bar is fixed on the second lock head and is arranged away from the rotating shaft; A self - lubricating structure is also provided for lubricating the contact surface between the first lock head and the second lock head.

[0006] As a preferred implementation in this embodiment, the self-lubricating structure includes an insulating cylinder with a material discharge funnel fixed inside, an insulating plate is detachably installed on the upper end of the insulating cylinder, an extrusion plate is arranged in the inner cavity of the insulating cylinder and above the material discharge funnel, and a plurality of groups of balls are arranged in the groove at the upper end of the extrusion plate, and a first elastic pad that is in sliding contact with the inner wall of the insulating cylinder is arranged on the outer wall of the extrusion plate; A material receiving pipe is connected to the lower part of the discharge port of the discharge funnel, and the lower end of the material receiving pipe is connected to the feed port of the inner flow channel provided in the inner cavity of the second lock head, and the discharge port of the inner flow channel is connected to the outer flow channel provided in a serpentine shape on the outer wall of the second lock head; A filling cavity is formed between the lower end of the extrusion plate and the upper end of the feeding funnel, and the filling cavity is filled with semi-solid lubricating oil.

[0007] As a preferred implementation in this embodiment, a quantity stabilizing structure is further provided to stabilize the quantity of the semi-solid lubricating oil discharged from the discharge port 20 .

[0008] As a preferred implementation in this embodiment, the flow stabilizing structure includes a column fixed at the lower end of the extrusion plate and slidingly passing through the discharge funnel, a trapezoidal block slidably arranged under the discharge funnel, and a flow stabilizing plate arranged between the discharge port and the receiving pipe; The flow stabilizing plate is provided with a through hole adapted to the material discharge port, and the upper and lower ends of the flow stabilizing plate are both provided with second elastic pads, and two groups of the second elastic pads arranged upper and lower respectively slide against the lower end of the material discharge hopper and the upper end of the material receiving pipe, and the flow stabilizing plate is fixedly provided on the trapezoidal block; An inclined plate is fixed on the inclined surface of the trapezoidal block, and a slide groove is obliquely arranged on the inclined plate. A resistance rod is installed at the lower end of the column, and one end of the resistance rod is slidably arranged in the slide groove.

[0009] As a preferred implementation manner in this embodiment, a third elastic pad is fixed on the top of the inner cavity of the insulation board.

[0010] As a preferred implementation in this embodiment, an air outlet pipe is provided on the heat insulation board.

[0011] As a preferred implementation manner in this embodiment, a feed pipe is provided on the discharge funnel, and the feed end of the feed pipe passes through the insulation cylinder, and a feed one-way valve is installed on the outer end of the feed pipe.

[0012] As a preferred implementation in this embodiment, both the second lock head and the first lock head are provided with stress through holes adapted to the outer shape.

[0013] As a preferred implementation manner in this embodiment, the depth of the groove at the upper end of the extrusion plate is greater than the diameter of the ball.

[0014] In summary, the technical effects and advantages of the present invention are as follows: The structure of the present invention is reasonable. The wide-rail vehicle is provided with a double-locking structure, which reduces the risk of accidental unlocking, enhances the fault tolerance of the system, and is also provided with a self-lubricating structure for lubricating the contact surface between the first lock head and the second lock head, reducing the friction between the first lock head and the second lock head, and prolonging the service life of the components. In the present invention, a stable-quantity structure is also provided for stabilizing the quantity of the semi-solid lubricating oil discharged from the material discharge port, so that the material discharge cavity allowing the lubricating oil to pass through the material discharge port is narrowed. As the extrusion plate continues to move downward, its material discharge cavity will continue to narrow, thereby maintaining the stability of the discharge quantity of the lubricating oil passing through the material discharge port and avoiding excessive discharge of the lubricating oil. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those skilled in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0016] Figure 1 It is a front view structural schematic diagram of the present invention; Figure 2 It is Figure 1 a partial side view structural schematic diagram in Figure 3 It is Figure 1 an enlarged structural schematic diagram at A in Figure 4 It is Figure 3 a sectional structural schematic diagram of the heat insulation cylinder in Figure 5 It is Figure 4 an enlarged structural schematic diagram at B in Figure 6 It is Figure 4 an enlarged structural schematic diagram at C in Figure 7 It is Figure 3 a left view structural schematic diagram of the second lock head in

[0017] In the figure: 1, carriage; 2, arc-shaped groove; 3, vehicle frame; 4, bolster; 5, wheel set; 6, L-shaped plate; 7, bottom door; 8, contact part; 9, first lock; 10, second lock; 11, shift lever; 12, stress through hole; 13, mounting plate; 14, heat insulation cylinder; 15, heat insulation plate; 16, extrusion plate; 17, first elastic pad; 18, ball; 19, blanking funnel; 20, blanking port; 21, material receiving pipe; 22, column; 23, internal flow channel; 24, flow stabilizing plate; 25, second elastic pad; 26, trapezoidal block; 27, inclined plate; 28, resisting rod; 29, sliding groove; 30, external flow channel; 31, feed pipe; 32, feed check valve; 33, air outlet pipe; 34, third elastic pad. Specific implementation mode

[0018] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0019] Embodiment: Refer to Figures 1-3 The bottom-opening wide-gauge vehicle with a self-lubricating double-lock door structure shown, including a vehicle frame 3, a carriage 1 and a bolster 4 are respectively installed at the upper and lower ends of the vehicle frame 3, a wheel set 5 is installed on the bolster 4, a double-opening bottom door 7 is arranged at the bottom of the carriage 1, an L-shaped plate 6 for supporting the opened bottom door 7 is installed on the vehicle frame 3, a first lock 9 with a hooking part is rotatably arranged on the vehicle frame 3, a contact part 8 adapted to the hooking part is arranged on the bottom door 7, a second lock 10 is rotatably arranged on the vehicle frame 3 through a rotating shaft, the second lock 10 is set as a sector, and the outer wall of the second lock 10 contacts the outer wall of the first lock 9; The outer wall of the second lock 10 is set as an arc, and an arc-shaped groove 2 is arranged on the outer wall of the first lock 9 corresponding to the outer wall of the second lock 10; Both the first lock 9 and the second lock 10 are rotatably arranged on a mounting plate 13, and the mounting plate 13 is fixedly installed on the vehicle frame 3; A shift lever 11 is fixed on the second lock 10, and the shift lever 11 is arranged away from the rotating shaft; A self-lubricating structure is also provided for lubricating the contact surface between the first lock 9 and the second lock 10.

[0020] During use, the hooking part of the first lock head 9 hooks the contact part 8 on the bottom door 7, so that the hooking part supports the bottom door 7, thereby locking the bottom door. At the same time, the second lock head 10 is rotated so that the outer wall of the second lock head 10 abuts against the outer wall of the first lock head 9. At this time, the second lock head 10 cannot continue to rotate. The component force of the gravity of the second lock head 10 acts on the first lock head 9 to form a double lock; A second lock head 10 is provided. The gravity of the second lock head 10 acts on the first lock head 9 to hinder the first lock head 9 and thus prevent it from loosening. Through the cooperation of the first lock head 9 and the second lock head 10, a double lock is formed. During the railway operation, due to vibration and impact, a single locking mechanism may be accidentally unlocked. The double lock utilizes the self-stabilizing characteristic of the sector block (the design of the sector block enables it to automatically adjust its position during movement, maintaining a stable pressure on the first lock head 9, improving the self-stability of the system). Through the component force of gravity acting on the first lock head 9, the risk of accidental unlocking is reduced and the fault tolerance of the system is enhanced; When the second lock head 10 is rotated so that a part of the outer surface of the second lock head 10 rotates into the arc-shaped groove 2, the stop rod 11 will contact the mounting plate 13 and the second lock head 10 cannot be rotated further. At this time, the first lock head 9 and the second lock head 10 form a surface contact. Compared with point contact, the surface contact has a larger contact area, reduces the pressure per unit area, and reduces wear and deformation; the surface contact helps to disperse stress, reduce stress concentration, improve the strength and stability of the components; the surface contact increases the friction force, provides a better locking effect, and reduces the risk of accidental unlocking; A self-lubricating structure is provided for lubricating the contact surface between the first lock head 9 and the second lock head 10, reducing the friction between the first lock head 9 and the second lock head 10, and extending the service life of the components.

[0021] As a preferred implementation method in this embodiment, as Figures 4-7 shown, the self-lubricating structure includes a heat-insulating cylinder 14 with a feeding funnel 19 fixed inside. The upper end of the heat-insulating cylinder 14 is detachably installed with a heat-insulating plate 15. An extrusion plate 16 is arranged in the inner cavity of the heat-insulating cylinder 14 and above the feeding funnel 19. A plurality of groups of ball bearings 18 are arranged in the groove at the upper end of the extrusion plate 16. A first elastic pad 17 that slidably abuts against the inner wall of the heat-insulating cylinder 14 is arranged on the outer wall of the extrusion plate 16; A receiving pipe 21 is butted directly below the feeding port 20 of the feeding funnel 19. The lower end of the receiving pipe 21 is connected to the feeding port of an inner flow channel 23 arranged in the inner cavity of the second lock head 10. The discharging port of the inner flow channel 23 communicates with an outer flow channel 30 arranged in a serpentine shape on the outer wall of the second lock head 10; A filling cavity is formed between the lower end of the extrusion plate 16 and the upper end of the feeding funnel 19, and the filling cavity is filled with semi-solid lubricating oil.

[0022] When the broad-gauge vehicle is driving on a bumpy road section, its second lock head 10 and the first lock head 9 vibrate greatly. This vibration will cause the balls 18 on the pressing plate 16 to be discarded, and finally collide with the pressing plate 16 under the action of gravity, thereby knocking on the pressing plate 16, causing the pressing plate 16 to move slightly downward, and then slowly squeezing the semi-solid lubricating oil in the filling cavity into the inner flow channel 23, and finally flowing into the outer flow channel 30 provided on the outer surface of the second lock head 10. Through the relative movement between the second lock head 10 and the first lock head 9, the semi-solid lubricating oil can be coated on the surface of the arc-shaped groove 2 and the surface where the second lock head 10 contacts the arc-shaped groove 2, thereby realizing the self-lubrication of the two.

[0023] It should be noted that: First, the heat insulation cylinder 14 and the heat insulation plate 15 are made of heat insulation materials to prevent the viscosity of the semi-solid lubricating oil from being affected by temperature, which may affect the flow rate of the lubricating oil flowing out of the feeding port 20, and is beneficial to the stable feeding of the lubricating oil; Second, only when the second lock head 10 vibrates greatly can the balls 18 impact the pressing plate 16 to squeeze out the lubricating oil for lubrication. If there is no large vibration, it proves that the friction between the first lock head 9 and the second lock head 10 is small, and the balls 18 cannot impact the pressing plate 16 to discharge the lubricating oil outward, avoiding waste of lubricating oil caused by excessive discharge of lubricating oil, and at the same time prolonging the service time of the lubricating oil in the filling cavity.

[0024] As a preferred implementation manner in this embodiment, a stable quantity structure is further provided for stabilizing the quantity of the semi-solid lubricating oil discharged from the feeding port 20.

[0025] As the pressing plate 16 slowly descends, the distance between the bottom of the groove inner cavity on the pressing plate 16 and the lower end of the heat insulation plate 15 becomes larger, making it more difficult for the balls 18 to be restricted by space, that is, the balls 18 can be shaken up to a higher height under the same vibration intensity. When the balls 18 fall, due to the increased falling distance, under the action of gravity, the kinetic energy of the balls 18 before colliding with the pressing plate 16 becomes larger, resulting in a violent collision with the pressing plate 16, and then causing the downward movement amplitude of the pressing plate 16 to become larger and larger, causing the lubricating oil to be squeezed out too much, resulting in waste of lubricating oil, and at the same time causing the injection interval time of the staff into the filling cavity to become shorter. Therefore, a stable quantity structure is provided to stabilize the quantity of the lubricating oil flowing out of the feeding port 20.

[0026] As a preferred implementation manner in this embodiment, as Figures 4-7 shown, the stable quantity structure includes a column 22 fixed to the lower end of the pressing plate 16 and sliding through the feeding funnel 19, a trapezoidal block 26 slidably arranged below the feeding funnel 19, and a stable flow plate 24 arranged between the feeding port 20 and the receiving pipe 21; A through hole adapted to the material discharge port 20 is provided on the flow stabilizer plate 24. Second elastic pads 25 are provided at both the upper and lower ends of the flow stabilizer plate 24, and the two groups of second elastic pads 25 arranged up and down are respectively in sliding contact with the lower end of the material discharge funnel 19 and the upper end of the material receiving pipe 21. The flow stabilizer plate 24 is fixedly arranged on the trapezoidal block 26; An inclined plate 27 is fixed on the inclined surface of the trapezoidal block 26, and a chute 29 is inclinedly arranged on the inclined plate 27. The lower end of the upright column 22 is provided with a contact rod 28, and one end of the contact rod 28 is slidably arranged in the chute 29.

[0027] When the extrusion plate 16 moves downward, it will drive the upright column 22 to move downward. The downward-moving upright column 22 will squeeze the inclined plate 27 and cause the trapezoidal block 26 to move leftward, thereby driving the flow stabilizer plate 24 to move leftward, causing the through hole to be offset from the material discharge port 20 and the feed port of the material receiving pipe 21, resulting in the reduction of the actual material discharge cavity allowing lubricating oil to pass through the material discharge port 20. As the extrusion plate 16 continues to move downward, its material discharge cavity will continue to shrink, thereby maintaining the stability of the discharge amount of the lubricating oil passing through the material discharge port 20 and avoiding excessive discharge of the lubricating oil.

[0028] It should be noted that the setting of the second elastic pad 25 can prevent gaps from being generated between the flow stabilizer plate 24 and the material discharge funnel 19 and the material receiving pipe 21, and prevent the lubricating oil from overflowing from this gap.

[0029] As a preferred implementation manner in this embodiment, as Figure 4 shown, a third elastic pad 34 is fixed on the top of the inner cavity of the heat insulation plate 15.

[0030] When the wide-rail vehicle travels on a bumpy road section, the balls 18 on the extrusion plate 16 will be shaken up and collide with the heat insulation plate 15. The existence of the third elastic pad 34 can buffer this collision, reduce the impact force of the balls on the heat insulation plate 15, prevent the heat insulation plate 15 from being damaged due to frequent impacts, and extend the service life of the heat insulation plate 15; Buffering the collision can reduce the noise and vibration generated by the collision, reduce the impact on the stability of the entire self-lubricating structure. A stable structure helps to ensure the normal material discharge and lubrication effect of the semi-solid lubricating oil, enabling the bottom-opening wide-rail vehicle with a self-lubricating double-lock door structure to operate more reliably.

[0031] As a preferred implementation manner in this embodiment, as Figure 4 shown, an air outlet pipe 33 is provided on the heat insulation plate 15.

[0032] Make the space above the extrusion plate 16 communicate with the external atmospheric pressure, and prevent the generation of negative pressure from affecting the downward movement of the extrusion plate 16.

[0033] As a preferred implementation manner in this embodiment, as Figure 4As shown in the figure, a feed pipe 31 is provided on the blanking hopper 19, and the feed end of the feed pipe 31 penetrates through the heat insulation cylinder 14. A feed check valve 32 is installed at the outer end of the feed pipe 31.

[0034] Semi-solid lubricating oil can be directly injected into the feed pipe 31 through a syringe, and the lubricating oil enters the filling cavity through the feed check valve 32.

[0035] It should be noted that as the lubricating oil enters the filling cavity, its pressing plate 16 will be pushed upward, and at the same time, the column 22 moves upward. Correspondingly, the trapezoidal block 26 moves to the right and finally returns to its original position.

[0036] As a preferred implementation method in this embodiment, as Figure 3 shown in the figure, stress through holes 12 adapted to the outer shape are provided on both the second lock head 10 and the first lock head 9.

[0037] The setting of the stress through holes 12 helps to disperse stress while reducing weight, reduces material fatigue or cracks caused by stress concentration, and improves the service life of the component.

[0038] As a preferred implementation method in this embodiment, as Figure 4 shown in the figure, the depth of the upper groove of the pressing plate 16 is greater than the diameter of the ball 18.

[0039] Even when the upper end of the pressing plate 16 abuts against the lower end of the heat insulation plate 15, the ball 18 still has space to move upward, which is beneficial for the ball 18 to collide with the pressing plate 16 and then discharge the material.

[0040] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A bottom-opening wide-rail vehicle with a self-lubricating double-door locking structure, comprising a vehicle frame (3), a carriage (1) and a bolster (4) are respectively installed at the upper and lower ends of the vehicle frame (3), a wheel set (5) is installed on the bolster (4), a bottom door (7) with a double-opening structure is arranged at the bottom of the carriage (1), an L-shaped plate (6) for supporting the opened bottom door (7) is installed on the vehicle frame (3), a first lock head (9) with a hooking part is rotatably arranged on the vehicle frame (3), and a contact part (8) adapted to the hooking part is arranged on the bottom door (7), characterized in that: A second lock head (10) is rotatably arranged on the vehicle frame (3) through a rotating shaft. The second lock head (10) is arranged in a sector shape, and the outer wall of the second lock head (10) contacts the outer wall of the first lock head (9). The outer wall of the second lock head (10) is arranged in an arc shape, and an arc-shaped groove (2) arranged on the outer wall of the second lock head (10) is arranged on the outer wall of the first lock head (9). Both the first lock head (9) and the second lock head (10) are rotatably arranged on a mounting plate (13), and the mounting plate (13) is fixedly mounted on the vehicle frame (3). A stop rod (11) is fixed on the second lock head (10), and the stop rod (11) is arranged away from the rotating shaft. A self-lubricating structure is also provided for lubricating the contact surface between the first lock head (9) and the second lock head (10).

2. The bottom-opening wide-rail vehicle with a self-lubricating double-door locking structure according to claim 1, characterized in that: The self-lubricating structure includes a heat-insulating cylinder (14) with a feeding funnel (19) fixed inside. The upper end of the heat-insulating cylinder (14) is detachably installed with a heat-insulating plate (15). An extrusion plate (16) is arranged in the inner cavity of the heat-insulating cylinder (14) and above the feeding funnel (19). A plurality of groups of ball bearings (18) are arranged in the groove at the upper end of the extrusion plate (16). A first elastic pad (17) that slidably abuts against the inner wall of the heat-insulating cylinder (14) is arranged on the outer wall of the extrusion plate (16). A receiving pipe (21) is butted directly below the feeding port (20) of the feeding funnel (19). The lower end of the receiving pipe (21) is connected to the feeding port of an inner flow channel (23) arranged in the inner cavity of the second lock head (10). The discharging port of the inner flow channel (23) communicates with an outer flow channel (30) arranged in a snake shape on the outer wall of the second lock head (10). A filling cavity is formed between the lower end of the extrusion plate (16) and the upper end of the feeding funnel (19), and the filling cavity is filled with semi-solid lubricating oil.

3. The bottom-opening wide-rail vehicle with a self-lubricating double-door locking structure according to claim 2, characterized in that: A stable quantity structure is also provided for stabilizing the quantity of the semi-solid lubricating oil discharged from the feeding port (20).

4. The bottom-opening wide-rail vehicle with a self-lubricating double-door locking structure according to claim 3, characterized in that: The stable quantity structure includes a column (22) fixed to the lower end of the extrusion plate (16) and slidably penetrating through the feeding funnel (19), a trapezoidal block (26) slidably arranged below the feeding funnel (19), and a flow stabilizing plate (24) arranged between the feeding port (20) and the receiving pipe (21). A through hole adapted to the feeding port (20) is arranged on the flow stabilizing plate (24). Second elastic pads (25) are arranged at both the upper and lower ends of the flow stabilizing plate (24). The two groups of second elastic pads (25) arranged up and down respectively slidably abut against the lower end of the feeding funnel (19) and the upper end of the receiving pipe (21). The flow stabilizing plate (24) is fixedly arranged on the trapezoidal block (26). An inclined plate (27) is fixed on the inclined surface of the trapezoidal block (26), and a sliding groove (29) is inclinedly arranged on the inclined plate (27). The lower end of the column (22) is installed with a contact rod (28), and one end of the contact rod (28) is slidably arranged in the sliding groove (29).

5. The bottom-opening wide-rail vehicle with a self-lubricating double-door locking structure according to claim 2, wherein: A third elastic pad (34) is fixed on the top of the inner cavity of the heat insulation plate (15).

6. The bottom-opening wide-rail vehicle with a self-lubricating double-door locking structure according to claim 2, characterized in that: An air outlet pipe (33) is arranged on the heat insulation plate (15).

7. The bottom-opening wide-rail vehicle with a self-lubricating double-door locking structure according to claim 2, characterized in that: A feed pipe (31) is arranged on the blanking funnel (19), and the feed end of the feed pipe (31) penetrates through the heat insulation cylinder (14), and a feed check valve (32) is installed on the outer end of the feed pipe (31).

8. The bottom-opening wide-rail vehicle with a self-lubricating double-door locking structure according to claim 2, characterized in that: Stress through holes (12) adapted to the outer shape are arranged on both the second lock head (10) and the first lock head (9).

9. The bottom-opening wide-rail vehicle with a self-lubricating double-door locking structure according to claim 2, characterized in that: The depth of the upper groove of the extrusion plate (16) is greater than the diameter of the ball (18).

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