Truck compartment door structure

Abstract

The invention relates to the technical field of compartment structures, in particular to a boxcar door structure which comprises a door frame and two door sets located in the door frame and distributed left and right. The door set comprises two door bodies, one ends of the two door bodies are rotationally connected through a plurality of hinges, connecting shafts are arranged at the other ends of the door bodies, the connecting shaft on one door body is rotationally installed in the door frame, and a first sliding block is arranged at the end of the connecting shaft on the other door body. The left side and the right side of each door group can be connected with the door frame, the two door bodies in the door group can be in an attached state during opening, so that the outward extending distance of the door bodies is reduced, the occupied area is reduced, and the two door bodies are arranged in the mode that the two door bodies are rotationally connected with the door frame and the position relation of the two door bodies during opening. The two door bodies can be prevented from moving at will, so that safety is improved, and the door bodies are prevented from moving at will and colliding with a human body or other objects.

Description

Technical Field

[0001] The present invention relates to the technical field of carriage structures, and particularly to a freight car carriage door structure. Background Art

[0002] As the core carrier of the logistics system, the loading and unloading efficiency, operation convenience and space utilization rate of freight vehicles directly affect the transportation cost and timeliness. The use of four-door freight carriages can provide a large operation space and flexibility for cargo loading and unloading, and is widely used in modern logistics transportation, railway freight and specific urban distribution and other fields; The four-door freight carriage is a structure with one side of the freight carriage as an opening, and the opening is blocked by four doors. The four doors are arranged in two groups, and the two doors in each group are rotatably connected to each other. One door in each group is rotatably connected to the side of the freight car body. When closed, the two doors in each group are attached to the opening position of the freight carriage, and then the plug structure on each door is used to fix the door. When using the carriage door of this structure, since the two doors in each group are rotatably connected, when opening, the distance it extends outwards is relatively far, occupying a large space, and since each door can move freely, when opening, its danger is relatively high, and it is easy to collide with the human body or other objects. When in the closed state, since each door is fixed through the plug structure on it, and the two doors are connected through structures such as hinges, when the items in the carriage impact other areas except the plug position, the two doors mainly rely on the hinges to connect and block the impact of the items. However, due to the relatively low strength of the hinges, it is easy to cause damage to the carriage door. Summary of the Invention

[0003] To solve the above technical problems, the present invention provides a freight car carriage door structure, and the specific technical solution adopted is as follows: A freight car carriage door structure of the present invention includes a door frame and two door groups distributed left and right inside the door frame; Each door group includes two door bodies. One end of the two door bodies is rotatably connected through a plurality of hinges. The other end of the door body is provided with a connecting shaft. The connecting shaft on one door body is rotatably installed in the door frame, and the end of the connecting shaft on the other door body is provided with a slider one. The connecting shaft rotates on the slider one, and the slider one slides on the door frame; Wherein, a plurality of plug structures are arranged between the two door bodies in the door group. The plug structure includes a secondary bolt, a main bolt and a plurality of chute plates. The secondary bolt is rotatably connected to the main bolt. The plurality of chute plates are respectively fixed on the two door bodies, and the secondary bolt and the main bolt slide in the corresponding chute plates.

[0004] Further, at least one of the bolt structures in the door group is provided with a locking structure for fixing the two door bodies in the open state.

[0005] Further, the locking structure includes a long slot opened on the main bolt. A first connecting arm, a second connecting arm and a second slider are arranged in the long slot. The first connecting arm is rotatably connected to the second connecting arm. The first connecting arm is fixedly connected to the auxiliary bolt. The second connecting arm is rotatably connected to the second slider, and the second slider slides in the long slot. A sliding groove is opened on the main bolt. A clamping plate is arranged in the sliding groove. Both side walls at one end of the clamping plate are used for bidirectionally limiting the position of the second slider. The other end of the clamping plate is connected to the main bolt through an elastic body.

[0006] Further, a connecting body is arranged on each of the door bodies in the door group. The connecting body is connected to the corresponding auxiliary bolt or the corresponding main bolt.

[0007] Further, insertion plates are slidably inserted through both ends of the connecting body. Insertion holes matching the insertion plates are opened on the door frame.

[0008] Further, the inside of the connecting body is hollow. A gear is rotatably arranged in the connecting body. Two racks are oppositely arranged on the left and right sides of the gear. The racks are meshed with the gear. The racks are connected to the corresponding insertion plates.

[0009] Further, a handwheel and a lock plate are arranged on each of the connecting bodies. The handwheel is in transmission connection with the corresponding gear. A plurality of lock holes are annularly distributed on the handwheel. Lock holes with the same structure are opened on the lock plate. The handwheel and the lock holes are connected through the lock plate and a lock body.

[0010] Further, the hinge on the door body is located on the side facing the inside of the carriage. A sealing strip is arranged between the two door bodies in the door group. The sealing strip includes a cushion strip and a clamping edge. A clamping groove matching the cushion strip is opened on the side wall of one of the door bodies.

[0011] The beneficial effects of the present invention are as follows: By enabling both the left and right sides of each door group to be connected to the door frame, when the door is opened, the two door bodies within the door group can be in a fitting state, thereby reducing their outward extension distance and the occupied area. Moreover, by using the setting method where both door bodies are rotatably connected to the door frame and the positional relationship between the two door bodies when opened, it is possible to prevent the two door bodies from moving randomly, thereby enhancing safety and avoiding the random movement of the door bodies and their collision with the human body or other objects. Since when the door group is closed, the two door bodies are locked in the same plane through the main bolt and several chute plates, and in combination with the connection relationship between both door bodies and the door frame, the door group can be firmly connected to the door frame, improving the impact resistance and strength of the door group. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present invention 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 described below are only some embodiments recorded in the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0013] Figure 1 is a structural schematic diagram of the present invention; Figure 2 is a structural schematic diagram of one side of the front of the door group in an embodiment of the present invention; Figure 3 is Figure 2 a schematic diagram of the other side of the back; Figure 4 is a structural schematic diagram of several bolt structures in an embodiment of the present invention; Figure 5 is a structural schematic diagram of a bolt structure in an embodiment of the present invention; Figure 6 is a sectional structural schematic diagram of a connecting body in an embodiment of the present invention; Figure 7 is a structural schematic diagram of a handwheel in an embodiment of the present invention; Figure 8 is Figure 3 a partial enlarged structural schematic diagram at A in; Figure 9 is a structural schematic diagram of a bolt structure with an intermediate bolt body in an embodiment of the present invention.

[0014] Reference numerals: 1. Door frame; 2. Door group; 3. Carriage; 4. Door body; 5. Connecting shaft; 6. First slider; 7. Bolt structure; 8. Sub-bolt; 9. Main bolt; 10. Slide groove plate; 11. Long groove; 12. First connecting arm; 13. Second connecting arm; 14. Second slider; 15. Clamping plate; 16. Elastic body; 17. Connecting body; 18. Insertion plate; 19. Gear; 20. Rack; 21. Handwheel; 22. Lock hole; 23. Lock plate; 24. Lock body; 25. Hinge; 26. Padding strip; 27. Clamping edge; 28. Intermediate bolt body. Detailed implementation manner

[0015] 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.

[0016] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0017] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations. This embodiment is written in a progressive manner.

[0018] As Figures 1 to 9 shown, a truck carriage door structure of the present invention includes a door frame 1 and two door groups 2 located inside the door frame 1 and distributed left and right; The door group 2 includes two door bodies 4. One end of the two door bodies 4 is rotatably connected through a plurality of hinges 25. A connecting shaft 5 is provided at the other end of the door body 4. The connecting shaft 5 on one door body 4 is rotatably installed in the door frame 1. The end of the connecting shaft 5 on the other door body 4 is provided with a first slider 6. The connecting shaft 5 rotates on the first slider 6, and the first slider 6 slides on the door frame 1; Among them, a plurality of bolt structures 7 are arranged between two door bodies 4 in the door group 2. The bolt structure 7 includes a secondary bolt 8, a main bolt 9 and a plurality of chute plates 10. The secondary bolt 8 is rotatably connected to the main bolt 9. The plurality of chute plates 10 are respectively fixed on the two door bodies 4. The secondary bolt 8 and the main bolt 9 slide in the corresponding chute plates 10. In the present invention, the door frame 1 is installed on the carriage 3, and the door frame 1 supports the two door groups 2. Since each door group 2 has two door bodies 4, the four door bodies 4 together block the opening of the carriage 3. Since one door body 4 in the door group 2 is rotatably installed on the door frame 1 through a connecting shaft 5, and the other door body 4 is slidably installed on the door frame 1 through the connecting shaft 5 and a slider 6 on it, both the left and right sides of the two door bodies 4 in the door group 2 are connected to the door frame 1. The two door bodies 4 are rotatably connected by a plurality of hinges 25. Therefore, when the door group 2 is opened, by pulling the area between the two door bodies 4 outwards, the left door body 4 can be opened to the left, and the right door body 4 can be opened to the right. Since the two door bodies 4 are connected, one door body 4 can only rotate on the door frame 1, and this door body 4 will pull the other door body 4 to move horizontally, so that the slider 6 slides on the door frame 1. The two door bodies 4 gradually change from a coplanar state to a mutually attached state, and the two door bodies 4 move to one side of the door frame 1, thereby opening the door group 2. The opening methods of the two door groups 2 are the same. When the door group 2 is closed, the two door bodies 4 are coplanar. At this time, the two door bodies 4 can be locked by a plurality of bolt structures 7. As Figure 5 shown, the secondary bolt 8 slides in the chute plate 10 on one door body 4, and the main bolt 9 slides in the chute plate 10 on at least one door body 4. When the main bolt 9 is simultaneously in the chute plates 10 on the two door bodies 4, the main bolt 9 can block the chute plates 10 on the two door bodies 4, so that the two door bodies 4 cannot move relative to each other, thereby keeping the two door bodies 4 in a planar state and the door group 2 cannot be deformed. When the door group 2 needs to be opened, only by pushing the secondary bolt 8 and the main bolt 9 to slide horizontally, so that the secondary bolt 8 and the main bolt 9 are respectively in the chute plates 10 on the two door bodies 4, and the connection position between the secondary bolt 8 and the main bolt 9 is between the two door bodies 4, the two door bodies 4 can be allowed to move relative to each other, thereby opening the door group 2. It should be noted that since both door bodies 4 have a certain thickness and the two door bodies 4 are rotatably connected, when the secondary bolt 8 and the main bolt 9 are rotatably connected through an axis, the angular range between the secondary bolt 8 and the main bolt 9 will limit the movement range of the two door bodies 4, that is, the two door bodies 4 cannot completely form a mutually attached state, thereby making the door group 2 unable to be completely opened. To further increase the movement range of the door body 4, the bolt structure 7 can be adopted as Figure 9The shown structural mode is that an intermediate bolt body 28 is arranged between the secondary bolt 8 and the main bolt 9. The intermediate bolt body 28 can be rotatably connected to the secondary bolt 8 and the main bolt 9 at the same time, and the vertical distance between the rotation axes of the secondary bolt 8 and the main bolt 9 on the intermediate bolt body 28 corresponds to the thickness value of the two door bodies 4. Thus, it can allow the two door bodies 4 to fit together when opened, and the door group 2 is completely opened; when the two door bodies 4 change from the opened state to the closed state, if a driving force is directly applied to the door bodies 4, then due to the angular relationship between the two door bodies 4 and the conversion efficiency of the driving force transmitted to the first slider 6 during the movement of the door bodies 4, a relatively large driving force is required to close the door bodies 4. However, if the first slider 6 is directly pushed to move, then it is more labor-saving to close the door bodies 4. Thus, by using this structural mode and the frictional force between the door frame 1 and the first slider 6, the random movement of the door bodies 4 after being opened can be avoided; By enabling both the left and right sides of each door group 2 to be connected to the door frame 1, when opened, the two door bodies 4 within the door group 2 can be in a fitting state, thereby reducing their outward extension distance and the occupied area. Moreover, by using the setting mode in which the two door bodies 4 are both rotatably connected to the door frame 1 and the positional relationship between the two door bodies 4 when opened, the random movement of the two door bodies 4 can be avoided, thereby improving safety and preventing the door bodies 4 from randomly moving and colliding with the human body or other objects; since when the door group 2 is closed, the two door bodies 4 are coplanarly locked through the main bolt 9 and a plurality of chute plates 10, and in combination with the relationship that the two door bodies 4 are both connected to the door frame 1, the door group 2 can be firmly connected to the door frame 1, improving the impact resistance and strength of the door group 2.

[0019] Furthermore, at least one bolt structure 7 within the door group 2 is provided with a locking structure for fixing the two door bodies 4 in the opened state; by providing the locking structure, the position of the two door bodies 4 when opened can be further limited, thereby avoiding the random movement of the door bodies 4 and improving safety.

[0020] Furthermore, the locking structure includes a long slot 11 opened on the main bolt 9. A first connecting arm 12, a second connecting arm 13 and a second slider 14 are arranged within the long slot 11. The first connecting arm 12 is rotatably connected to the second connecting arm 13. The first connecting arm 12 is fixedly connected to the secondary bolt 8. The second connecting arm 13 is rotatably connected to the second slider 14, and the second slider 14 slides within the long slot 11; A chute is opened on the main bolt 9. A clamping plate 15 is arranged within the chute. Both side walls at one end of the clamping plate 15 are used for bidirectionally limiting the position of the second slider 14. The other end of the clamping plate 15 is connected to the main bolt 9 through an elastic body 16; In the present invention, when the main bolt 9 is located in the plurality of slide plates 10 on the two door bodies 4, the main bolt 9 limits the two door bodies 4. When the main bolt 9 is located in the plurality of slide plates 10 on one door body 4, the rotational connection position of the auxiliary bolt 8 and the main bolt 9 is located between the two door bodies 4. At this time, the two door bodies 4 are allowed to rotate and open, that is, the two door bodies 4 rotate relative to each other, and the two door bodies 4 respectively drive the auxiliary bolt 8 and the main bolt 9 to rotate relative to each other. The auxiliary bolt 8 drives the connecting arm 12 to rotate toward the outside of the long groove 11, and the connecting arm 12 pulls the slider 2 14 to slide in the long groove 11 through the connecting arm 2 13. At this time, a side wall of the end of the card plate 15 blocks the slider 2 14, so that the slider 2 14 cannot When the two doors 4 are opened to a predetermined angle, the second slider 14 moves to the position of the other side wall of the end of the card plate 15, and the card plate 15 is released. The elastic body 16 pulls the card plate 15 to slide and blocks the second slider 14 again. At this time, the second slider 14 cannot slide in the opposite direction in the long slot 11, thereby achieving the locking work of the two doors 4 in the open state. It should be noted that when the plug structure 7 adopts Figure 9 In the structural manner shown, the connecting arm 12 and the middle bolt body 28 are fixedly connected.

[0021] Furthermore, each door body 4 in the door group 2 is provided with a connector 17, and the connector 17 is connected to each corresponding auxiliary bolt 8 or each corresponding main bolt 9; since the auxiliary bolt 8 and the main bolt 9 on each bolt structure 7 will have a locking effect on the two door bodies 4, when the door body 4 is opened, it is necessary to move the main bolt 9 in each bolt structure 7, and the operation method is cumbersome. In order to solve this problem, several auxiliary bolts 8 are connected to each other through the connector 17, and several main bolts 9 are also connected to each other through the connector 17. Therefore, it is only necessary to push the connector 17 to move, so that several auxiliary bolts 8 and several main bolts 9 can move at the same time, and the setting of the connector 17 can prevent the auxiliary bolts 8 or the main bolts 9 from detaching from the corresponding slide plate 10.

[0022] Furthermore, both ends of the connector 17 are slidably inserted with plug plates 18, and the door frame 1 is provided with a socket for use with the plug plates 18; because when the door group 2 is closed, the two door bodies 4 are connected by a number of bolt structures 7, and the position between the two door bodies 4 is not connected to the door frame 1, the area between the two door bodies 4 is not effectively supported, and its strength is relatively low. By adopting the structural method of the plug plates 18 and the sockets on the door frame 1, the plug plates 18 can be passed through the sockets when the door group 2 is closed, thereby utilizing the plug plates 18 and the connector 17 to ensure that each bolt structure 7 is fixedly supported, thereby improving the overall strength of the door body 4.

[0023] Furthermore, the interior of the connecting body 17 is hollow, and a gear 19 is rotatably provided in the connecting body 17. Two racks 20 are provided on the left and right sides of the gear 19, and the racks 20 are meshed and connected with the gear 19, and the racks 20 are connected to the corresponding plugboards 18; Since the upper and lower ends of a connector 17 are connected to the door frame 1 through the plug plates 18, when unlocking, each plug plate 18 needs to be slid and retracted into the connector 17. The method of adjusting the plug plates 18 one by one is relatively cumbersome, and the upper plug plate 18 is not easy to operate due to its high position. Therefore, a gear 19 and two racks 20 can be set in the middle or lower position of the connector 17. By rotating the gear 19, the two hand wheels 21 are moved relative to each other, thereby driving the two plug plates 18 to move synchronously relative to each other, and the two plug plates 18 on the connector 17 can be retracted at the same time and detached from the door frame 1.

[0024] Furthermore, each connector 17 is provided with a handwheel 21 and a lock plate 23. The handwheel 21 is in transmission connection with the corresponding gear 19. The handwheel 21 has a plurality of lock holes 22 distributed in a ring shape. The lock plate 23 has lock holes 22 of the same structure. The handwheel 21 and the lock holes 22 are connected through the lock plate 23 and the lock body 24. By rotating the handwheel 21, the worker can drive the gear 19 to rotate, thereby controlling the position of the two plug plates 18. When the plug plates 18 are in an inserted state or an idle state, the position of the handwheel 21 can be locked by locking the lock hole 22 on the lock plate 23 and the corresponding lock hole 22 on the handwheel 21 through the lock body 24, thereby preventing the handwheel 21 from rotating at will and improving safety.

[0025] Furthermore, the hinge 25 on the door body 4 is located on the side facing the interior of the vehicle compartment 3. A sealing strip is provided between the two door bodies 4 in the door group 2. The sealing strip includes a gasket strip 26 and a clamping edge 27. A side wall of one door body 4 is provided with a clamping groove for use with the gasket strip 26. Since the hinge 25 is located on the side of the door body 4 facing the interior of the compartment 3, the two door bodies 4 can be directly docked together without leaving a gap between the two door bodies 4, which can improve the sealing performance. The docking position of the two door bodies 4 can adopt a structure in which ridges and grooves cooperate, such as Figure 8 As shown, in order to achieve buffering of the two door bodies 4 and improve the sealing performance, a sealing strip can be installed between the two door bodies 4; the card slot on one door body 4 is mainly used to install the sealing strip, and the installation method is that the card edge 27 is inserted into the card slot, and the cross-section of the card slot and the card edge 27 can be set to a trapezoid to prevent the card edge 27 from loosening and falling off, and the pad strip 26 can buffer and seal the two door bodies 4.

[0026] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and modifications can be made, and these improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A structure of a freight car compartment door, characterized in that, It includes a door frame and two door groups located inside the door frame and distributed left and right; Each of the door groups includes two door bodies. One end of the two door bodies is rotatably connected by a plurality of hinges. A connecting shaft is provided at the other end of the door body. The connecting shaft on one door body is rotatably installed in the door frame. A slider one is provided at the end of the connecting shaft on the other door body. The connecting shaft rotates on the slider one, and the slider one slides on the door frame; Wherein, a plurality of bolt structures are arranged between the two door bodies in the door group. The bolt structure includes a secondary bolt, a main bolt and a plurality of chute plates. The secondary bolt is rotatably connected to the main bolt. The plurality of chute plates are respectively fixed on the two door bodies. The secondary bolt and the main bolt slide in the corresponding chute plates.

2. The structure of a truck carriage door according to claim 1, characterized in that, At least one of the bolt structures in the door group is provided with a locking structure for fixing the two door bodies in the open state.

3. The structure of a truck compartment door according to claim 2, wherein, The locking structure includes a long groove opened on the main bolt. A connecting arm one, a connecting arm two and a slider two are arranged in the long groove. The connecting arm one is rotatably connected to the connecting arm two. The connecting arm one is fixedly connected to the secondary bolt. The connecting arm two is rotatably connected to the slider two, and the slider two slides in the long groove; A chute is opened on the main bolt. A clamping plate is arranged in the chute. Both side walls at one end of the clamping plate are used for bidirectional limiting of the position of the slider two. The other end of the clamping plate is connected to the main bolt through an elastic body.

4. The structure of a truck compartment door according to claim 3, wherein A connecting body is arranged on each of the door bodies in the door group. The connecting body is connected to the corresponding secondary bolt or the corresponding main bolt.

5. The structure of a truck carriage door according to claim 4, characterized in that, Insertion plates are slidably inserted through both ends of the connecting body. Insertion holes matching the insertion plates are opened on the door frame.

6. The structure of a truck carriage door according to claim 5, characterized in that, The inside of the connecting body is hollow. A gear is rotatably arranged inside the connecting body. Two racks are oppositely arranged on the left and right sides of the gear. The racks are meshed and connected to the gear. The racks are connected to the corresponding insertion plates.

7. The structure of a truck carriage door according to claim 6, characterized in that, A handwheel and a lock plate are arranged on each of the connecting bodies. The handwheel is in transmission connection with the corresponding gear. A plurality of lock holes are annularly distributed on the handwheel. Lock holes with the same structure are opened on the lock plate. The handwheel and the lock holes are connected through the lock plate and a lock body.

8. The structure of a truck compartment door according to claim 7, wherein, The hinges on the door body are located on the side facing the inside of the carriage. A sealing strip is arranged between the two door bodies in the door group. The sealing strip includes a cushion strip and a clamping edge. A clamping groove matching the cushion strip is opened on the side wall of one door body.

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