Freight vehicle

Abstract

The embodiment of the utility model provides a freight vehicle which comprises a vehicle body side wall provided with a door opening used for arranging a loading door. The door frame is arranged at the door opening; hinges and a first door driving seat are arranged at the top of the door frame, and a lock hole is formed in the middle of the door frame. The top of the door plate is connected with the hinge, so that the door plate is opened by turning upwards or closed by turning downwards towards the outer side of the vehicle body relative to the door frame through the hinge; a locking mechanism is arranged in the middle of the door plate and matched with the lock hole to lock the door plate and the door frame. And the door driving mechanism is connected between the first door driving seat and the door plate and provides driving force for overturning the door plate. The freight vehicle can adapt to loading and unloading of the transfer box, high loading and unloading efficiency can be achieved, and the cargo loading and transporting amount can be increased.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of railway vehicles, and in particular to a freight vehicle. BACKGROUND

[0002] High-speed freight transportation is constantly developing with the emergence of high-speed transportation technology. In order to face the huge potential of the railway freight market, it is imperative to innovate high-speed freight transportation vehicles and develop batch transportation of high-speed freight trains by fully tapping the high-speed freight transportation capacity in the early morning and staggering the operation of passenger trains.

[0003] Currently, the development of freight trains and freight metro projects in China mainly involves two aspects: one is the modification of the freight function of existing high-speed trains, and the other is the manufacture of new freight trains. The existing freight vehicle doors are driven by a driving mechanism to open and close two door leaves horizontally, which has a large opening size and is suitable for loading large heavy containers. The side wall of this scheme needs to be designed to avoid the movement track of the door leaves, and the installation position of the driving mechanism needs to be installed with a reinforcing plate. The side wall and the floor need to be increased with a slide and a locking mechanism, which greatly changes the vehicle body and is only suitable for new vehicles, not for old vehicle modification. Moreover, the structure is complex, the assembly requirements are high, and the manufacturing cost is also high. In addition, the vehicle doors also occupy the width space inside the vehicle, and there is a risk of collision with the goods during the opening and closing process of the vehicle doors.

[0004] The first batch of high-speed trains and metro trains in China has approached the design life. As of now, the first batch of Harmony high-speed trains has been in operation for 15-16 years. With the continuous introduction of Fuxing high-speed trains for passenger transportation, these Harmony high-speed trains have the conditions for freight function modification, and it is particularly important to promote the freight modification of existing high-speed trains. Various vehicle manufacturers are actively exploring new high-speed freight models by modifying traditional passenger high-speed trains. The seats, luggage racks, and other service facilities in the carriages are removed, and the internal structure is more suitable for freight transportation. The main high-time and high-value goods transported include fresh food, business urgent goods, biological medicine, electronic products, etc. The highest running speed is 250 km / h, and the maximum loading weight can reach more than 55 tons.

[0005] The commonly used transfer box for loading goods includes A and B types. The A type has the following dimensions: external dimension: 860mmx522mmx396mm, internal dimension: 750mmx450mmx350mm, folded dimension: 860mmx522mmx106mm, self weight: 10kg, and load capacity: no more than 40kg. The B type has the following dimensions: external dimension: 613mmx424mmx345.5mm, internal dimension: 510mmx360mmx310mm, folded dimension: 613mmx424mmx106mm, self weight: 5kg, and load capacity: no more than 30kg. In order to improve the loading and unloading efficiency and convenience of goods, a loading door is urgently needed to simply modify the vehicle body under the premise of not affecting the strength of the vehicle body, so as to meet the rapid loading and unloading requirements of the above transfer boxes. SUMMARY

[0006] In order to solve one of the above technical defects, a freight vehicle is provided in the embodiments of the present application.

[0007] According to a first aspect of the embodiments of the present application, a freight vehicle is provided, comprising:

[0008] A vehicle body side wall having a door hole for setting a loading door;

[0009] A door frame arranged at the door hole; the top of the door frame is provided with a hinge hinge and a first door driving seat, and the middle of the door frame is provided with a lock hole;

[0010] A door panel connected to the hinge hinge at the top, so as to be opened by upwardly turning or closed by downwardly turning relative to the door frame; the middle of the door panel is provided with a locking mechanism, and the locking mechanism cooperates with the lock hole to lock the door panel and the door frame;

[0011] A door driving mechanism connected between the first door driving seat and the door panel, providing driving force for turning the door panel.

[0012] The technical scheme provided by the embodiment of the application comprises the following steps: a door hole for mounting a loading door is formed in a side wall of a vehicle body; a door frame is arranged at the door hole; a hinge and a first door driving seat are arranged at the top of the door frame; a lock hole is arranged at the middle of the door frame; the top of a door plate is connected with the hinge, so that the door plate is opened or closed by being turned upward or downward relative to the door frame through the hinge; a locking mechanism is arranged at the middle of the door plate, and the locking mechanism is matched with the lock hole to lock the door plate and the door frame; a door driving mechanism is connected between the first door driving seat and the door plate, and driving force for turning the door plate is provided, so that the top of the door plate is turned relative to the door frame, and the door plate is turned upward or downward to be opened or closed, which reduces the occupation of the space in the vehicle compartment, so that more goods can be accommodated in the vehicle compartment, and the goods do not need to be placed to avoid the loading door; on the other hand, when the loading door is opened, the space below the loading door can also be used, and the operator can go to the space to load and unload goods, or a lifting mechanism is arranged at the space, or a fork arm of a forklift can be extended to the position, so that the goods can be conveniently loaded and unloaded. In addition, the locking mechanism locks the door plate, so that the reliability and safety of the loading door are improved. BRIEF DESCRIPTION OF DRAWINGS

[0013] The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and serve to explain the principles of the application, and do not limit the application in any way. In the drawings:

[0014] Figure 1 A structure schematic view of a door plate arranged on a side wall of a freight vehicle is provided for the embodiment of the application;

[0015] Figure 2 Another angle structure schematic view of the door plate arranged on the side wall of the freight vehicle is provided for the embodiment of the application;

[0016] Figure 3 A structure schematic view of the door plate turned and opened relative to the door frame is provided for the embodiment of the application;

[0017] Figure 4 Another structure schematic view of the door plate turned and opened relative to the door frame is provided for the embodiment of the application;

[0018] Figure 5 A structure schematic view of the door plate is provided for the embodiment of the application;

[0019] Figure 6 Another structure schematic view of the door plate is provided for the embodiment of the application;

[0020] Figure 7 A side view of the door plate is provided for the embodiment of the application;

[0021] Figure 8 A structure schematic view of the door frame is provided for the embodiment of the application;

[0022] Figure 9 A structure diagram of a door panel and a door panel flip-close structure provided by an embodiment of the present application;

[0023] Figure 10 A structure diagram of a door panel and a door panel flip-close structure provided by an embodiment of the present application; Figure 9 An enlarged view of area A in the middle;

[0024] Figure 11 A structure diagram of a door panel and a door panel flip-close structure provided by an embodiment of the present application; Figure 9 An enlarged view of area B in the middle;

[0025] Figure 12 A structure diagram of a door panel and a door panel flip-close structure provided by an embodiment of the present application;

[0026] Figure 13 A structure diagram of a door panel and a door panel flip-close structure provided by an embodiment of the present application; Figure 9 An enlarged view of area C in the middle;

[0027] Figure 14 A structure diagram of a door panel and a door panel flip-close structure provided by an embodiment of the present application;

[0028] Reference signs:

[0029] 1 - side wall; 11 - door opening;

[0030] 2 - door frame; 21 - lock hole; 22 - hinge mounting groove;

[0031] 3 - door panel; 31 - avoidance groove; 32 - hinge connection part; 33 - door panel skeleton; 34 - inner skin; 35 - outer skin; 36 - shielding part; 37 - lock tongue extension hole;

[0032] 4 - hinge;

[0033] 51 - first door drive seat; 52 - second door drive seat;

[0034] 6 - door drive mechanism;

[0035] 7 - lock mechanism; 71 - lock tongue drive mechanism; 72 - first rotating arm; 73 - first lock connecting rod; 74 - first lock tongue; 75 - first lock seat; 76 - second rotating arm; 77 - second lock connecting rod; 78 - second lock tongue; 79 - second lock seat; 710 - connecting rod;

[0036] 81 - first lock piece; 82 - second lock piece;

[0037] 9 - door control system. DETAILED DESCRIPTION

[0038] In order to make the technical solutions and advantages of the embodiments of the present application clearer, the exemplary embodiments of the present application are further described in detail below with reference to the drawings. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0039] The present embodiment provides a freight vehicle, which is provided with a loading door on the side wall of the vehicle body. The loading door can be opened by being flipped outward and upward, and the freight is transported into the vehicle compartment through the loading door, especially the transfer box is more convenient to transport through the loading door. Compared with the conventional freight vehicle loading door, the loading door provided by the present embodiment has a smaller volume and a simpler structure. The scheme provided by the present embodiment is suitable for new vehicles and also suitable for improving existing vehicles.

[0040] As shown in Figures 1 to 8 The present embodiment provides a freight vehicle, which includes a vehicle body formed by a chassis, a side wall, a roof and an end wall, forming a vehicle compartment, and the internal space of the vehicle compartment is used to accommodate freight. A door opening 11 for setting a loading door is formed on the side wall 1. For a new vehicle, the opening position of the door opening 11 is set according to the structure of the side wall 1; for an existing vehicle, the existing structure on the side wall 1 is modified, for example, the original vehicle window position is adjusted appropriately to set the loading door as the door opening 11, or the door opening 11 can be set at other positions.

[0041] A door frame 2 is installed at the door opening 11. The door opening 11 can be rectangular, and the door frame 2 is also rectangular, which can be welded by metal profiles. For example, four long strip-shaped aluminum alloy (6005A-T6) profiles are used, and the first and last profiles are welded to form a rectangular frame. The door frame 2 is fixed on the side wall 1 by screws, and the periphery of the side wall 1 is sealed by glue. The use of aluminum alloy material can reduce the weight of the door frame 2 and achieve lightweight design.

[0042] The top of the door frame 2 is provided with a hinge hinge 4 and a first door driving seat 51, and the middle of the door frame 2 is provided with a lock hole 21. The top of the door plate 3 is connected with the hinge hinge 4, so that the door plate 3 can be rotated relative to the door frame 2 through the hinge hinge, and be flipped outward and upward to open, or be flipped downward to close. This outwardly flipped opening loading door does not occupy the internal space of the vehicle compartment, and does not interfere with the freight in the vehicle compartment. More freight can be placed in the vehicle compartment, and the loading door does not need to be considered to avoid. In addition, the upwardly flipped opening loading door does not interfere with the space below the loading door, so the transfer box can be placed on the ground below the loading door, or the lifting mechanism can be placed, or the fork arm of the forklift can also be extended below the loading door, which is more convenient for loading and unloading freight and improves the loading and unloading efficiency.

[0043] The door driving mechanism 6 is connected between the first door driving seat 51 and the door plate 3, and provides driving force for the door plate 3 to turn up or turn down.

[0044] The middle part of the door plate 3 is provided with a locking mechanism 7, which cooperates with the lock hole 21 to lock the door plate 3 and the door frame 2. During the process of loading and unloading goods and driving, the locking mechanism 7 is inserted into the lock hole 21 to lock the door plate 3 and the door frame 2, so that the door plate 3 cannot be turned up and opened. When the vehicle stops and needs to load and unload goods, the locking mechanism 7 is pulled out of the lock hole 21 to unlock, and then the door plate 3 can be turned up and opened by the door driving mechanism 6. The use of the locking mechanism 7 can improve the reliability of the loading door and ensure driving safety.

[0045] The technical scheme provided by the embodiment is that a door hole for installing a loading door is formed in the side wall of the vehicle body; the door frame is arranged at the door hole; the top of the door frame is provided with a hinge and a first door driving seat, and the middle part of the door frame is provided with a lock hole; the top of the door plate is connected with the hinge, so as to be turned up and opened or turned down and closed to the outside of the vehicle body relative to the door frame through the hinge; the middle part of the door plate is provided with a locking mechanism, which cooperates with the lock hole to lock the door plate and the door frame; and the door driving mechanism is connected between the first door driving seat and the door plate, and provides driving force for the door plate to turn up or turn down. The top of the door plate is rotated relative to the door frame, the door plate is turned up and opened or turned down and closed, which on the one hand reduces the occupation of the internal space of the vehicle compartment, so that more goods can be accommodated in the vehicle compartment, and the placement position of the goods does not need to consider avoiding the loading door; on the other hand, the space below the loading door can also be utilized when the loading door is opened, the operator can go to the space to load and unload goods, or a lifting mechanism can be arranged at the space, or the fork arm of the forklift can be extended to the position, which is convenient for loading and unloading goods. In addition, the locking mechanism locks the door plate, which can improve the reliability and safety of the loading door.

[0046] The size of the door hole 11, the door frame 2 and the door plate 3 can be set according to the structure and strength of the side wall 1, or can be referred to the size of the goods. For example, for the case of transporting by a transfer box, the size of the door frame 2 can be the transfer box, and the size of the loading door is smaller than that of the conventional freight vehicle. The number of loading doors can be set to be multiple and arranged at intervals along the length direction of the vehicle.

[0047] In the conventional scheme, only one large loading door is arranged in one vehicle compartment of the freight vehicle, and the transfer boxes are all placed in the door opening area from the loading door, and then are sequentially carried into the vehicle compartment, which is time-consuming and laborious.

[0048] The technical scheme provided by the embodiment is that a door hole for installing a loading door is formed in the side wall of the vehicle body; the door frame is arranged at the door hole; the top of the door frame is provided with a hinge and a first door driving seat, and the middle part of the door frame is provided with a lock hole; the top of the door plate is connected with the hinge, so as to be turned up and opened or turned down and closed to the outside of the vehicle body relative to the door frame through the hinge; the middle part of the door plate is provided with a locking mechanism, which cooperates with the lock hole to lock the door plate and the door frame; and the door driving mechanism is connected between the first door driving seat and the door plate, and provides driving force for the door plate to turn up or turn down. The top of the door plate is rotated relative to the door frame, the door plate is turned up and opened or turned down and closed, which on the one hand reduces the occupation of the internal space of the vehicle compartment, so that more goods can be accommodated in the vehicle compartment, and the placement position of the goods does not need to consider avoiding the loading door; on the other hand, the space below the loading door can also be utilized when the loading door is opened, the operator can go to the space to load and unload goods, or a lifting mechanism can be arranged at the space, or the fork arm of the forklift can be extended to the position, which is convenient for loading and unloading goods. In addition, the locking mechanism locks the door plate, which can improve the reliability and safety of the loading door.

[0046] The size of the door hole 11, the door frame 2 and the door plate 3 can be set according to the structure and strength of the side wall 1, or can be referred to the size of the goods. For example, for the case of transporting by a transfer box, the size of the door frame 2 can be the transfer box, and the size of the loading door is smaller than that of the conventional freight vehicle. The number of loading doors can be set to be multiple and arranged at intervals along the length direction of the vehicle.

[0049] On the basis of the above technical solutions, as shown in Figure 5 and Figure 6 The inner surface of the door panel 3 is provided with an avoiding groove 31 for avoiding the door driving mechanism 6, the avoiding groove 31 extends downward from the top of the door panel 3 to the middle of the door panel 3, and the end of the avoiding groove 31 is provided with a second door driving seat 52 connected with the door driving mechanism 6.

[0050] The door driving mechanism 6 can be an electric driving mechanism, a hydraulic driving mechanism or a pneumatic driving mechanism, etc. In the embodiment, the door driving mechanism 6 is a pneumatic cylinder, one end of which is connected to the first door driving seat 51 and the other end of which is connected to the second door driving seat 52. For example, the cylinder body of the pneumatic cylinder is connected to the second door driving seat 52, and the telescopic rod is connected to the first door driving seat 51. When the telescopic rod is extended, it pushes the door panel 3 to turn outward and open, and when the telescopic rod is retracted, it drives the door panel 3 to turn inward and close.

[0051] Specifically, the first door driving seat 51 is fixed to the door frame 2 by bolts. The first door driving seat 51 is provided with two driving seat plates parallel to each other, and the driving seat plates are provided with connecting holes. One end of the door driving mechanism 6 is connected to the connecting holes between the two driving seat plates by a fixed pin.

[0052] The second door driving seat 52 is fixed to the door panel 3 by bolts, and the second door driving seat 52 is provided with two connecting seat plates parallel to each other, and the connecting seat plates are provided with connecting holes. The other end of the door driving mechanism 6 is connected to the connecting holes between the two connecting seats by a fixed pin.

[0053] One embodiment is that the number of door driving mechanisms 6 is one, which is arranged in the middle of the door panel 3.

[0054] Alternatively, the number of door driving mechanisms 6 is two, which are arranged side by side and spaced apart. The top of the door frame 2 is provided with two first door driving seats 51, and the inner surface of the door panel 3 is correspondingly provided with two avoiding grooves 31, and the end of each avoiding groove 31 is provided with a second door driving seat 52. One door driving mechanism 6 is arranged corresponding to one first door driving seat 51 and one avoiding groove 31. The two door driving mechanisms 6 uniformly apply force to the door panel 3, which can balance the force on both sides of the door panel 3, not only improving the stability and reliability of the turning of the door panel 3, but also prolonging the service life of the door panel 3 and the door driving mechanism 6.

[0055] The embodiment provides an installation method of the hinge 4: as shown in Figure 9 and Figure 10As shown in the drawings, the top of the door frame 2 is provided with a hinge mounting groove 22, and the hinge hinge 4 is arranged in the hinge mounting groove 22. The top outer side of the door plate 3 extends upward to form a hinge connecting portion 32, which extends into the hinge mounting groove 22 and is connected with the hinge hinge 4. The hinge extending portion 32 not only serves to connect the hinge hinge 4, but also can shield the gap between the door frame 2 and the door plate 3.

[0056] One embodiment is that the top of the door frame 2 is provided with four hinge hinges 4, and the distance between adjacent two hinge hinges 4 is equal. The four hinge hinges 4 are uniformly arranged on the door frame 2, which can keep the force between the door plate 3 and the door frame 2 balanced, and make the flipping process of the door plate 3 more stable.

[0057] For the door plate 3, the embodiment also provides an embodiment as shown in Figure 7 、 Figure 10 and Figure 11 , the door plate 3 comprises a door plate skeleton 33, an inner skin 34 and an outer skin 35. The door plate skeleton 33 is generally a rectangular frame, which can be welded by aluminum alloy (6005A-T6) profile. The inner skin 34 is arranged on the inner surface of the door plate skeleton 33, and the outer skin 35 is arranged on the outer surface of the door plate skeleton 33.

[0058] The edge of the door plate skeleton 33 extends outward to form a shielding portion 36, which overlaps the outer surface of the door frame 2 and can shield the gap between the door frame 2 and the door plate 3. Further, a sealing strip is arranged between the shielding portion 36 and the door frame 2 to seal the gap therebetween.

[0059] The four edges of the door plate skeleton 33 can be provided with shielding portions 36. Among them, the shielding portion 36 at the top of the door plate skeleton 33 can be used as the above-mentioned hinge connecting portion 32 to connect the hinge hinge 4.

[0060] The door plate skeleton 33, the inner skin 34 and the outer skin 35 form a space, and the locking mechanism 7 is arranged in the space. The side surface of the door plate skeleton 33 is provided with a lock tongue extending hole 37, and the locking mechanism 7 extends out of the lock tongue extending hole 37 to cooperate with the lock hole 21.

[0061] The embodiment also provides an embodiment of the locking mechanism 7 as shown in Figure 12 and Figure 13 , the locking mechanism comprises a lock tongue driving mechanism 71, a first rotating arm 72, a first lock connecting rod 73, a first lock tongue 74 and a first lock seat 75. The lock tongue driving mechanism 71 is arranged on the door plate skeleton 33, and the lock tongue driving mechanism 71 can be an electric driving mechanism, a hydraulic driving mechanism or a pneumatic driving mechanism, and a pneumatic cylinder is adopted in the embodiment.

[0062] The first rotating arm 72 is connected with the bolt driving mechanism 71, and the bolt driving mechanism 71 is used for driving the first rotating arm 72 to rotate. One end of the first connecting rod 73 is hingedly connected with the first rotating arm 72, and the other end is connected with the first bolt 74. The rotation of the first rotating arm 72 can push the first connecting rod 73 to move in the left-right direction of the door plate 3. Figure 12

[0063] The first lock seat 75 is arranged at the side of the door plate 3. The first lock seat 75 is provided with a first insertion hole through which the first bolt 74 is inserted and extended from the bolt extension hole 37 at the side of the door plate framework 33 and can be inserted into the lock hole 21 of the door frame.

[0064] One embodiment is that two first connecting rods 73 are respectively connected at the left and right sides of the first rotating arm 72, the end of each first connecting rod 73 is connected with the first bolt 74, and the two first connecting rods 73 move in opposite directions. Figure 12 For example, when the first rotating arm 72 rotates counterclockwise, the left first connecting rod 73 drives the first bolt 74 connected therewith to move leftward, and the first bolt 74 is inserted into the lock hole 21 at the left side of the door frame from the first lock seat 75; the right first connecting rod 73 drives the first bolt 74 connected therewith to move rightward, and the first bolt 74 is inserted into the lock hole 21 at the right side of the door frame from the first lock seat 75. Through the scheme that the two first connecting rods 73 are connected with the first rotating arm 72, the left and right sides of the door plate 3 are locked with the door frame 2, and the reliability of the door plate 3 in the locked state can be further improved.

[0065] On the basis of the above technical scheme, the locking mechanism 7 further comprises a second rotating arm 76, a second connecting rod 77, a second bolt 78, a second lock seat 79 and a connecting rod 710. The second rotating arm 76 is connected with the first rotating arm 72 through the connecting rod 710, and the rotation of the first rotating arm 72 can drive the second rotating arm 76 to rotate through the connecting rod 710.

[0066] One end of the second connecting rod 77 is connected with the second rotating arm 76, and the other end is connected with the second bolt 78. The second connecting rod 77 is arranged in parallel and spaced apart with the first connecting rod 73 along the up-down direction of the door plate 3.

[0067] The second lock seat 79 is arranged at the side of the door plate 3, and the second lock seat 79 is provided with an insertion hole through which the second bolt 78 is inserted and extended from the bolt extension hole 37 at the side of the door plate framework 33 and can be inserted into the lock hole 21 of the door frame.

[0068] One embodiment is that two second connecting rods 77 are respectively connected at the left and right sides of the second rotating arm 76, the end of each second connecting rod 77 is connected with the second bolt 78, and the two second connecting rods 77 move in opposite directions. Figure 12 ​For example, when the first rotating arm 72 rotates counterclockwise, the second rotating arm 76 is driven to rotate clockwise, the left second lock connecting rod 77 drives the second lock tongue 78 connected thereto to move leftward, to pass through the second lock seat 79 and insert into the lock hole 21 on the left side of the door frame; the right second lock connecting rod 77 drives the second lock tongue 78 connected thereto to move rightward, to pass through the second lock seat 79 and insert into the lock hole 21 on the right side of the door frame. Through the scheme that the left and right second lock connecting rods 77 are connected with the second rotating arm 76, the left and right sides of the door plate 3 are locked with the door frame 2, and the reliability of the door plate 3 in the locked state can be further improved.

[0069] Correspondingly, the door plate framework 33 is provided with two upper and lower lock tongue extension holes 37 on each side, and the door frame 2 is provided with two upper and lower lock holes 21 on each side, which are matched with the first lock tongue 74 and the second lock tongue 78 respectively.

[0070] In addition, the upper and lower groups of lock connecting rods, rotating arms and lock tongues are matched, so that the upper and lower parts of the door plate 3 are locked, thereby further improving the reliability of the door plate locking. Moreover, the lock tongue driving mechanism 71 can synchronously drive the upper and lower groups of lock connecting rods, rotating arms and lock tongues to move synchronously, the synchronization is good, the number of driving components is reduced, the cost is reduced, and maintenance is simpler. The locking mechanism adopts a connecting rod type structure, has high reliability, can realize 4-point synchronous locking and unlocking, and a loosening prevention spring can be arranged on the locking mechanism to prevent the door lock from being automatically opened. The front and rear position electromagnetic detection switches are arranged on the lock tongue driving mechanism 71, and are used to detect the state of the locking mechanism.

[0071] The parts of the above-mentioned locking mechanism can be fixed to the door plate by bolts, and can be fixed to the skin or the door plate framework.

[0072] On the basis of the above technical scheme, an emergency unlocking mechanism is arranged on the door plate 3, which is used to open the loading door from the outside of the vehicle by the operator in an emergency. Specifically, as shown in Figure 14 The first lock piece 81 and the second lock piece 82 are arranged above and below and connected with the second rotating arm 72. The outer skin of the door plate 3 is provided with an opening, and the first lock piece 81 and the second lock piece 82 are exposed from the opening. After the first lock piece 81 is unlocked by a special key, the second lock piece 82 is unlocked by a four-corner key or a triangular key, and the door plate 3 is pulled up by a door handle on the door plate.

[0073] The above-mentioned door control system 9 includes a door controller and a pneumatic system composed of solenoid valves, pressure detection switches, throttle valves, air pipes, etc. The solenoid valves are controlled by the door controller to control the locking and unlocking of the cylinders. The throttle valves are used to control the flow of the entire air path, thereby controlling the speed of the door leaf and the locking mechanism. When the loading door needs to be opened, the door control system first controls the cylinder to unlock the locking mechanism, and then controls the door driving mechanism to open the door panel upward. The cylinder is designed with a self-locking function, so that even if the air supply is cut off, the door panel will remain open and will not automatically fall down.

[0074] The above-mentioned technical solution provides a loading door which uses two groups of cylinders as power sources and has an upward opening structure. The door control system is installed on the inner wall of the side wall, and each driving mechanism and locking mechanism is connected to the door control system. In normal operation, the loading door is in a locked state. In the parking and loading / unloading state, the driving mechanism pushes the door panel to open upward around the rotating shaft according to the control command sent by the door control system. In an emergency, the loading door is manually unlocked and opened for loading / unloading.

[0075] The above-mentioned loading door has little modification to the vehicle body, thereby having little impact on the strength of the vehicle body. Moreover, the above-mentioned structure is simple, easy to operate, and low in cost. The loading door occupies less space in the vehicle compartment after being closed, so that more goods can be loaded in the vehicle compartment. The loading door can be provided at multiple positions on both sides of the side wall to improve the loading / unloading efficiency.

[0076] The door panel of the above-mentioned loading door can be fully opened to form a larger opening, which is suitable for the loading and unloading of small goods such as express delivery boxes and woven bags. The goods can be directly loaded into the vehicle compartment through the loading door, thereby greatly improving the loading / unloading efficiency and reducing the labor intensity.

[0077] Moreover, the loading door can be automatically opened and closed, thereby realizing unmanned remote operation or few-person operation, reducing the labor intensity and labor cost.

[0078] In the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0079] In addition, the terms "first", "second", etc. are used herein only to describe different instances, and do not imply or suggest relative importance or a number of the indicated technical features. Thus, the features defined with "first", "second" can include one or more of the features explicitly or implicitly. In the description of the present application, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless otherwise explicitly and specifically limited.

[0080] In the present application, unless otherwise explicitly and specifically defined, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, can be fixed connection, can also be detachable connection, or integral; can be mechanical connection, can also be electrical connection or can communicate with each other; can be directly connected, can also be indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0081] Although the preferred embodiments of the present application have been described, those skilled in the art can make further changes and modifications to these embodiments once they know the basic inventive concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present application.

[0082] Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application also intends to include these modifications and variations.

Claims

1. A cargo vehicle, characterized in that The utility model relates to a vehicle body side wall, open with the door hole for setting up loading door; Door frame, set up in the door hole, the top of door frame is equipped with the hinge hinge and first door drive seat, the middle part of door frame is equipped with the lock hole; Door board, top with hinge hinge link, open or close through hinge hinge to the vehicle body outside side up turn over to the door frame; Door drive mechanism, connect between first door drive seat and door board, provide the driving force of door board turn over. The inner surface of the door plate is provided with an avoiding groove for avoiding the door drive mechanism; the avoiding groove extends from the top of the door plate to the middle part of the door plate; the end of the avoiding groove is provided with a second door drive seat connected with the door drive mechanism.

2. The cargo vehicle of claim 1, wherein, The door drive mechanism is a gas cylinder; 3. The cargo vehicle of claim 2, wherein, The first door drive seat is provided with two parallel drive seat plates, and the drive seat plates are provided with connecting holes; The second door drive seat is provided with two parallel connecting seat plates, and the connecting seat plates are provided with connecting holes; The number of door drive mechanisms is two, and they are arranged side by side and spaced apart; 4. The cargo vehicle of claim 3, wherein, The top of the door frame is provided with two first door drive seats, and the inner surface of the door plate is correspondingly provided with two avoiding grooves; 5. The cargo vehicle of claim 1, wherein, The top of the door frame is provided with a hinge mounting groove, and the hinge hinge is arranged in the hinge mounting groove; The top of the door plate extends outward to form a hinge connecting part, which extends into the hinge mounting groove and is connected with the hinge hinge.

6. The cargo vehicle of claim 5, wherein, The top of the door frame is provided with four hinge hinges, and the distance between adjacent two hinge hinges is equal.

7. The cargo vehicle of claim 1, wherein, The door plate comprises: A door plate framework made of aluminum alloy profiles by welding; the edges of the door plate framework extend outward to form shielding parts which overlap the outer surface of the door frame; An inner skin arranged on the inner surface of the door plate framework; An outer skin arranged on the outer surface of the door plate framework; The locking mechanism is arranged in the space surrounded by the door plate framework, the inner skin and the outer skin; the side surface of the door plate framework is provided with an opening, and the locking mechanism extends out of the opening to cooperate with the lock hole.

8. The cargo vehicle of claim 7, wherein, The locking mechanism comprises: A lock tongue drive mechanism arranged on the door plate framework; A first rotating arm connected with the lock tongue drive mechanism, and the lock tongue drive mechanism is used to drive the first rotating arm to rotate; A first lock connecting rod, one end of which is connected with the first rotating arm; A first lock tongue connected with the other end of the first lock connecting rod; A first lock seat arranged on the side edge of the door plate, and the first lock seat is provided with a first insertion hole through which the first lock tongue is inserted and extends out of the opening in the side surface of the door plate framework to be inserted into the lock hole of the door frame.

9. The cargo vehicle of claim 8, wherein, The locking mechanism further comprises: A second rotating arm connected with the first rotating arm through a connecting rod, and the rotation of the first rotating arm can drive the second rotating arm to rotate through the connecting rod; A second lock connecting rod, one end of which is connected with the second rotating arm, and the second lock connecting rod and the first lock connecting rod are arranged side by side and spaced apart in the up-down direction of the door plate; A second lock tongue connected with the other end of the second lock connecting rod. Second lock seat, set up in the side of door board, second lock seat is equipped with the hole for second lock tongue to pass through, second lock tongue inserts the hole and extends from the opening of the side of door board framework, can insert the lock hole of door frame, one side of door board framework is equipped with two openings from top to bottom, one side of door frame is equipped with two lock holes from top to bottom.

10. The cargo vehicle of claim 9, wherein, The number of the first lock connecting rods is two, which are located at the two sides of the first rotating arm and connected with the first rotating arm; the two first lock connecting rods move in opposite directions; The number of the second lock connecting rods is two, which are located at the two sides of the second rotating arm and connected with the second rotating arm; the two second lock connecting rods move in opposite directions.

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