Field self-propelled cooking truck with wingspan linkage double-opening door

Abstract

The present application relates to a kind of field self-propelled cooking car with wingspan linkage double-open door, including vehicle body, including automobile chassis, and carriage, the opening of the carriage is swingably connected with upper turnover door in upper end downward, swingably connected with lower turnover door in lower end upward;Linkage driving mechanism, for driving the upper turnover door, lower turnover door synchronous opening and closing, linkage driving mechanism includes fixedly connected with the fixed frame of upper turnover door, and the support connecting rod of one end being not connected with upper turnover door being hinged to the fixed frame, one end of the support connecting rod not being hinged to the fixed frame is hinged to the lower turnover door;The lower turnover door is driven by the driving hydraulic cylinder being hinged to the carriage;Fixed mechanism, including the mounting bracket being arranged on the upper portion of the carriage, the lower side of the mounting bracket fixed device has the electromagnet being adapted with the fixed frame.The present application can effectively realize the synchronous opening and closing linkage driving of upper turnover door and lower turnover door, and ensure the overall structural stability of the present application.

Description

Technical Field

[0001] This invention relates to a self-propelled cooking vehicle with a wing-shaped linkage double door, which can realize the linkage opening and closing of the upward and downward doors, and can realize the individual opening and closing control of the upward door, so as to greatly improve the adaptability of the self-propelled cooking vehicle in the field. Background Technology

[0002] Currently, self-propelled field kitchens enable vehicles to operate while in the field, meeting the needs of field operations and emergency rescue. Existing open-type self-propelled field kitchens generally consist of a vehicle body (a chassis for movement) and a cargo bed with a rear door mounted on the chassis, where cooking utensils are then stored. Existing self-propelled field kitchens are available in both enclosed and open designs. Open-type vehicles offer more usable space and better ventilation, thus they are becoming increasingly popular.

[0003] Existing open-type self-propelled field kitchens generally have openings on their cargo compartments, with closable wing doors (upward-opening and downward-opening doors) at the top and bottom of these openings. Opening the wing doors—the upward-opening door and the downward-opening door—effectively increases the usable and operational space of the cargo compartment. In addition, to ensure the load-bearing capacity of the downward-opening door, existing downward-opening doors are generally fixed with several corresponding support rods.

[0004] To ensure the smooth operation of the top and bottom doors of open-style self-propelled field kitchens, the traditional method involves installing hydraulic cylinders at both the upper and lower ends of the vehicle body. The top door is driven by the cylinder at the upper end, and the bottom door by the cylinder at the lower end. This requires two sets of hydraulic cylinders, which are relatively expensive to manufacture, require high maintenance standards, and have a high failure rate. Most importantly, one end of the upper hydraulic cylinder can only be suspended and hinged to the top of the vehicle body. Besides the difficulty in laying the hydraulic lines, this also poses certain safety hazards. For example, if the hinged end of the hydraulic cylinder becomes loose, an accident could occur. Therefore, the existing driving method is to install a set of driving hydraulic cylinders directly at the bottom of the carriage, and then install a linkage driving mechanism between the upward and downward doors. In use, the downward door is driven by the driving hydraulic cylinder alone, and the upward door is driven synchronously by the linkage driving mechanism. This can reduce the use of a set of hydraulic cylinders and effectively overcome the defects of the upward placement of the driving hydraulic cylinder.

[0005] However, the technical solution of using a set of hydraulic cylinders and a linkage drive mechanism to simultaneously open and close the top and bottom doors also has the following obvious drawbacks: 1) During the operation of the cooking vehicle, especially at high speeds, the top and bottom doors have a large wind-receiving area. Therefore, the top and bottom doors are subjected to significant forces under the flowing air pressure. The bottom door is directly fixed by the hydraulic cylinder, while the force on the top door needs to be transmitted to the bottom door through the linkage drive mechanism, and finally to the hydraulic cylinder. This causes stress concentration at various connection nodes of the linkage drive mechanism and at the connection between the bottom door and the hydraulic cylinder, which can eventually lead to deformation and failure of the mechanism; 2) The top and bottom doors can only be opened and closed simultaneously. In rainy weather, it is often necessary to keep both doors closed, making it difficult to exhaust fumes in a timely manner, thus reducing the adaptability of the cooking vehicle.

[0006] Therefore, the research objective of this invention is to design a self-propelled cooking vehicle with a wing-shaped linkage double door that can effectively achieve synchronous opening and closing linkage of the upward and downward doors, as well as separate opening and closing linkage of the upward door, thereby improving the adaptability of the equipment; and effectively ensure the structural stability of the driving hydraulic cylinder and the linkage drive mechanism, thereby effectively ensuring the stable operation of the equipment for a long time. Summary of the Invention

[0007] In view of the problems existing in the prior art, the present invention provides a self-propelled cooking vehicle with a wing-width linkage double door, which can effectively solve the problems existing in the prior art.

[0008] The technical solution of this invention is:

[0009] A self-propelled outdoor cooking vehicle with wingspan-linked double doors, including...

[0010] The vehicle body includes a car chassis and a cargo compartment with a rear door mounted on the car chassis. The cargo compartment has an opening on at least one side. The upper part of the opening of the cargo compartment is hinged downwards and has a hinged upwards door. The lower part of the opening of the cargo compartment is hinged upwards and has a hinged downwards door.

[0011] A linkage drive mechanism is used to drive the upward and downward opening and closing of the doors simultaneously. The linkage drive mechanism includes a fixed frame fixed to the upward opening door and a support rod hinged to one end of the fixed frame that is not connected to the upward opening door. The end of the support rod that is not hinged to the fixed frame is hinged to the downward opening door. The downward opening door is driven by a drive hydraulic cylinder hinged to the carriage. When the piston rod of the drive hydraulic cylinder extends, it drives the downward opening door to rotate downward around its hinge point with the carriage and open. It also drives the upward opening door to rotate upward around its hinge point with the carriage through the support rod and the fixed frame. When the piston rod of the drive hydraulic cylinder retracts, it drives the downward opening door to rotate upward around its hinge point with the carriage and close. It also drives the upward opening door to rotate downward around its hinge point with the carriage through the support rod and the fixed frame.

[0012] The fixing mechanism is made of iron material and includes a mounting bracket disposed on the upper part of the carriage. The lower side of the mounting bracket has an electromagnet adapted to the fixing bracket.

[0013] An electric controller is used to control the working process of the drive hydraulic cylinder and the electromagnet. When the piston rod of the drive hydraulic cylinder begins to extend, the electromagnet is de-energized, and when the piston rod of the drive hydraulic cylinder retracts to the position, the electromagnet is energized.

[0014] It also includes a separate drive mechanism for the upward-opening door, the separate drive mechanism for the upward-opening door comprising...

[0015] The adjusting screw, the supporting link includes a first link hinged to the fixed frame and a second link hinged to the flip-down door. The two ends of the adjusting screw are respectively provided with external threads with opposite directions of rotation. The end of the first link not hinged to the fixed frame and the end of the second link not hinged to the flip-down door are respectively connected to the two ends of the adjusting screw by threaded connection.

[0016] A screw drive mechanism is used to drive the adjusting screw to rotate in both directions. When the adjusting screw rotates in the forward direction, the connection distance between the second connecting rod and the first connecting rod is shortened, and the upward-opening door rotates upward around its hinge point with the carriage to open. When the adjusting screw rotates in the reverse direction, the connection distance between the second connecting rod and the first connecting rod is extended, and the upward-opening door rotates downward around its hinge point with the carriage to reset and close.

[0017] The screw drive mechanism includes a forward and reverse motor. The middle fixing device of the adjusting screw has a first helical gear set with a V-shaped engagement. The forward and reverse motor is directionally and movably mounted on the first connecting rod or the second connecting rod. The output shaft end fixing device of the forward and reverse motor has a second helical gear set with a pointed engagement. The second helical gear set is meshed and transmitted to the first helical gear set in an inserted state.

[0018] It also includes a sealing strip mechanism, which includes a central sealing strip fixed to the bottom end of the upward-opening door or the top end of the downward-opening door. The central sealing strip includes a T-shaped sealing strip body arranged laterally. One side of the T-shaped sealing strip body is fixedly snapped to the bottom end of the upward-opening door or the top end of the downward-opening door. The other side of the T-shaped sealing strip body is provided with at least one clamping sealing part in an arc shape. The outermost clamping sealing part is integrally formed and has a tensioning part connected to the outer end of the T-shaped sealing strip body.

[0019] The sealing strip mechanism also includes end sealing strips fixed to the upper and lower ends of the opening of the carriage. The end sealing strips are installed on the carriage through corresponding mounting plates. One side of the mounting plate is fixed to the carriage, and the other side of the mounting plate is folded outward. The end sealing strip includes a hollow abutment portion and an inner insertion groove provided in the hollow abutment portion. The end sealing strip is fixed to the mounting plate by the insertion groove cooperating with the folded portion of the mounting plate. When the upper and lower doors are closed, their inner walls are respectively sealed against the hollow abutment portion of the end sealing strip.

[0020] The hollow abutment portion of the end sealing strip has an elliptical cross-section.

[0021] The fixing frame is a right-angled triangular fixing frame. The base and hypotenuse of the fixing frame are made of rods with square cross-sections. The right-angled side of the fixing frame is made of channel steel. The base and hypotenuse of the fixing frame are fixed together by welding. The outer ends of the base and hypotenuse of the fixing frame are respectively inserted into the right-angled side of the fixing frame and fixed by welding.

[0022] The right-angled side of the fixing frame extends to the outside of the hypotenuse of the fixing frame. A corresponding reinforcing channel steel is fixed to the outside of the extension of the right-angled side of the fixing frame by welding. The first connecting rod is hinged to the extension of the right-angled side of the fixing frame and the reinforcing channel steel.

[0023] The upper end of the upward-opening door and the lower end of the downward-opening door are respectively pivotally hinged to the carriage via multiple corresponding hinges; the downward-opening door is provided with a corresponding hinge seat, and the end of the second link not connected to the first link is hinged to the hinge seat.

[0024] The fixing frame and the supporting connecting rod are each in pairs, and are respectively installed on both sides of the upward-opening door and the downward-opening door.

[0025] Advantages of this invention:

[0026] 1) The downward-opening door switch of the present invention is driven by a drive hydraulic cylinder hinged to the carriage. Based on this, through the intervention of the fixed frame and the support link, the upward-opening door can be driven synchronously under the drive of a set of drive hydraulic cylinders, so as to effectively drive the opening and closing of the upward-opening door and the downward-opening door synchronously.

[0027] To address the technical problem of stress concentration at various connection nodes of the linkage drive mechanism and at the connection between the tilting door and the drive hydraulic cylinder caused by the intervention of the linkage drive mechanism, this invention further adds a fixing mechanism. This mechanism includes a mounting bracket mounted on the upper part of the carriage. An electromagnet, adapted to the fixing bracket, is fixed to the lower side of the mounting bracket. When the piston rod of the drive hydraulic cylinder begins to extend, the electromagnet is de-energized; when the piston rod retracts to its original position, the electromagnet is energized. Thus, without affecting the opening and closing operation of the tilting and lowering doors, it effectively provides stable fixation for the tilting door when it is closed, ensuring the overall structural stability of the tilting and lowering doors and the linkage drive mechanism. This effectively ensures long-term stable operation of the equipment and allows the linkage drive mechanism to be used smoothly.

[0028] 2) This invention also includes a separate drive mechanism for the upward-opening door. This mechanism includes an adjusting screw. The supporting link includes a first link hinged to a fixed frame and a second link hinged to the downward-opening door. The two ends of the adjusting screw are respectively provided with external threads of opposite directions. The end of the first link not hinged to the fixed frame and the end of the second link not hinged to the downward-opening door are respectively connected to the two ends of the adjusting screw via threaded connections. When the screw drive mechanism drives the adjusting screw to rotate forward, the connection distance between the second link and the first link shortens, and the upward-opening door rotates upward around its hinge point with the vehicle compartment, opening at a certain angle. This further enables separate opening and closing of the upward-opening door, building upon the synchronous opening and closing linkage of the upward and downward-opening doors. For example, on rainy days, the upward-opening door can be opened at a certain angle to facilitate the exhaust of fumes and increase air circulation within the vehicle compartment, significantly improving the adaptability of the equipment.

[0029] 3) During the rotation of the adjusting screw, the screw drive mechanism will cause a certain distance of directional movement as the relative position of the adjusting screw and the first and second connecting rods changes. This can lead to a failure in the transmission connection between the screw drive mechanism and the adjusting screw. Therefore, this invention further designs the screw drive mechanism, which includes a reversible motor and a set of first helical gears in a V-shape fixed to the middle of the adjusting screw. The reversible motor is then directionally and movably mounted on the first or second connecting rod, and a set of second helical gears in a pointed engagement is fixed to the output shaft end of the motor. The second helical gears are then connected to the first helical gears in a plug-in state.

[0030] In this way, the first helical gear set can be smoothly driven in both forward and reverse directions, thereby driving the adjusting screw to rotate in both directions to adjust the connection distance between the second and first connecting rods, thus realizing the individual opening and closing drive of the flip-up door. During the driving process, the V-shaped engagement of the first helical gear set can effectively limit the engagement of the pointed engagement of the second helical gear set, ensuring that the second helical gear set is always in a proper meshing connection with the first helical gear set. This not only completes the driving of the adjusting screw, but also ensures that the transmission connection between the screw drive mechanism and the adjusting screw does not fail, thus ensuring that the individual opening and closing drive of the flip-up door in this invention can be successfully realized.

[0031] 4) The present invention also includes a sealing strip mechanism, which includes a central sealing strip fixed to the bottom end of the upward-opening door or the top end of the downward-opening door. The central sealing strip includes a T-shaped sealing strip body arranged laterally. One side of the T-shaped sealing strip body is fixedly snapped to the bottom end of the upward-opening door or the top end of the downward-opening door. The other side of the T-shaped sealing strip body is provided with at least one clamping sealing part in an arc shape. The outermost clamping sealing part is integrally formed and provided with a tensioning part connected to the outer end of the T-shaped sealing strip body.

[0032] After the top and bottom doors are closed, the outermost clamping seal is clamped between the top and bottom doors. At this time, the outermost clamping seal will be pressed inward to achieve a sealing effect. As the clamping seal is pressed, the tensioning part pulls the outer end of the T-shaped sealing strip body inward, so that it can effectively adhere to the top or bottom door in the tensioned state, thereby effectively ensuring the sealing effect between the top and bottom doors.

[0033] 5) The sealing strip mechanism of the present invention further includes end sealing strips fixed to the upper and lower ends of the opening of the carriage. The end sealing strips are installed on the carriage via corresponding mounting plates. Each end sealing strip includes a hollow abutment portion and an insertion groove disposed inside the hollow abutment portion. The end sealing strips are fixed to the mounting plates by engaging with the folding portion of the mounting plate via the insertion groove. The cross-section of the hollow abutment portion of the end sealing strip is elliptical. With the cooperation of the insertion groove and the hollow abutment portion, the end sealing strips can be easily installed, and it can be ensured that the installed end sealing strips can cooperate with the closed upper and lower doors to ensure a sealing effect between the upper and lower doors and the carriage.

[0034] 6) The right-angled side of the fixing frame of the present invention is made of channel steel. The bottom side and the inclined side of the fixing frame are fixed by welding. The outer ends of the bottom side and the inclined side of the fixing frame are respectively inserted into the right-angled side of the fixing frame and fixed by welding, so that the right-angled side of the fixing frame can extend smoothly to the outside of the inclined side of the fixing frame. Then, the reinforcing channel steel is fixed to the outside of the extension of the right-angled side of the fixing frame. Then, the first connecting rod is hinged to the extension of the right-angled side of the fixing frame and the reinforcing channel steel. This can simplify the structure of the fixing frame and effectively ensure the structural stability of the fixing frame and the structural stability of the hinge part with the first connecting rod. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the structure of the present invention.

[0036] Figure 2 This is a side view of the present invention.

[0037] Figure 3 This is a cross-sectional view of the present invention.

[0038] Figure 4 for Figure 1 A magnified view of a portion of the image.

[0039] Figure 5 This is a schematic diagram of the structure when the central sealing strip is assembled in place.

[0040] Figure 6 This is a schematic diagram of the structure of the central sealing strip.

[0041] Figure 7 This is a schematic diagram of the structure when the end sealing strip is assembled in place.

[0042] Figure 8 A schematic diagram of the end sealing strip. Detailed Implementation

[0043] To facilitate understanding by those skilled in the art, the structure of the present invention will now be described in further detail with reference to the accompanying drawings:

[0044] refer to Figure 1-8 A self-propelled cooking vehicle with wingspan-linked double doors, including

[0045] The vehicle body 1 includes a car chassis 101 and a cargo box 102 with a rear door mounted on the car chassis 101. The cargo box 102 has corresponding openings 1021 on both sides. The upper end of the opening 1021 of the cargo box 102 is hinged to an upward-swinging door 2, and the lower end of the opening 1021 of the cargo box 102 is hinged to a downward-swinging door 3.

[0046] A linkage drive mechanism 4 is used to drive the upward-opening door 2 and the downward-opening door 3 to open and close synchronously. The linkage drive mechanism 4 includes a fixed frame 401 fixed to the upward-opening door 2 and a support link 402 hinged to one end of the fixed frame 401 that is not connected to the upward-opening door 2. The end of the support link 402 that is not hinged to the fixed frame 401 is hinged to the downward-opening door 3. The downward-opening door 3 is driven by a drive hydraulic cylinder 403 hinged to the carriage 102. The drive hydraulic cylinder 403... When the piston rod extends, it drives the downward-opening door 3 to rotate downward around its hinge with the carriage 102 and open, and drives the upward-opening door 2 to rotate upward around its hinge with the carriage 102 via the support rod 402 and the fixing frame 401; when the piston rod of the driving hydraulic cylinder 403 retracts, it drives the downward-opening door 3 to rotate upward around its hinge with the carriage 102 and close, and drives the upward-opening door 2 to rotate downward around its hinge with the carriage 102 and close;

[0047] The fixing mechanism 5, wherein the fixing frame 401 is made of iron material, the fixing mechanism 5 includes a mounting bracket 501 disposed on the upper part of the carriage 102, and the lower fixing device of the mounting bracket 501 has an electromagnet 502 adapted to the fixing frame 401.

[0048] An electric controller is used to control the working process of the driving hydraulic cylinder 403 and the electromagnet 502. When the piston rod of the driving hydraulic cylinder 403 begins to extend, the electromagnet 502 is de-energized, and when the piston rod of the driving hydraulic cylinder 403 retracts to the position, the electromagnet 502 is energized.

[0049] The switch of the downward-opening door 3 of the present invention is driven by a driving hydraulic cylinder 403 hinged to the carriage 102. Based on this, through the intervention of the fixing frame 401 and the supporting connecting rod 402, the switch of the upward-opening door 2 can be driven synchronously under the drive of a set of driving hydraulic cylinders 403, so as to effectively drive the switches of the upward-opening door 2 and the downward-opening door 3 synchronously.

[0050] To address the technical problem of stress concentration at various connection nodes of the linkage drive mechanism 4 and at the connection between the lower door 3 and the drive hydraulic cylinder 403 caused by the intervention of the linkage drive mechanism 4, this invention further adds a fixing mechanism 5. This effectively and stably fixes the upper door 2 when it is closed without affecting the opening and closing operation of the upper door 2 and the lower door 3, thus ensuring the overall structural stability of the upper door 2, the lower door 3, and the linkage drive mechanism 4. This effectively ensures that the equipment can operate stably for a long time and that the linkage drive mechanism 4 can be used smoothly.

[0051] The present invention also includes an independent drive mechanism 7 for the upward-opening door, the independent drive mechanism 7 comprising:

[0052] The adjusting screw 701 and the supporting connecting rod 402 include a first connecting rod 4021 hinged to the fixed frame 401 and a second connecting rod 4022 hinged to the flip-down door 3. The two ends of the adjusting screw 701 are respectively provided with external connecting threads with opposite directions. The end of the first connecting rod 4021 not hinged to the fixed frame 401 and the end of the second connecting rod 4022 not hinged to the flip-down door 3 are respectively connected to the two ends of the adjusting screw 701 by threaded connection.

[0053] The screw drive mechanism 702 is used to drive the adjusting screw 701 to rotate in both directions. When the adjusting screw 701 rotates in the forward direction, the connection distance between the second connecting rod 4022 and the first connecting rod 4021 is shortened, and the upward-opening door 2 rotates upward around its hinge point with the carriage 102 to open. When the adjusting screw 701 rotates in the reverse direction, the connection distance between the second connecting rod 4022 and the first connecting rod 4021 is extended, and the upward-opening door 2 rotates downward around its hinge point with the carriage 102 to reset and close.

[0054] When the screw drive mechanism 702 drives the adjusting screw 701 to rotate forward, the connection distance between the second connecting rod 4022 and the first connecting rod 4021 is shortened. The upward-opening door 2 rotates upward around its hinge point with the carriage 102 and opens to a certain angle. Thus, based on the synchronous opening and closing linkage of the upward-opening door 2 and the downward-opening door 3, the independent opening and closing drive of the upward-opening door 2 can be further realized. For example, on rainy days, the upward-opening door 2 can be opened to a certain angle to facilitate the exhaust of oil fumes and increase the air circulation rate in the carriage 102, thereby greatly improving the adaptability of the equipment.

[0055] During the process of driving the adjusting screw 701 to rotate, the screw drive mechanism 702 will undergo a certain distance of directional movement as the relative positions of the adjusting screw 701 and the first connecting rod 4021 and the second connecting rod 4022 change. This will lead to a failure in the transmission connection between the screw drive mechanism 702 and the adjusting screw 701. Therefore, the present invention further designs the screw drive mechanism 702 as follows:

[0056] The screw drive mechanism 702 includes a forward and reverse motor 7021, which is electrically connected to the electrical controller. The middle fixing device of the adjusting screw 701 has a first helical gear set 7022 with a V-shaped engagement. The forward and reverse motor 7021 is directionally and movably mounted on the first connecting rod 4021. The first connecting rod 4021 has a guide key arranged in a straight line outward. The forward and reverse motor is movably sleeved on the outside of the first connecting rod 4021 through a corresponding mounting seat. The mounting seat has a guide groove adapted to the guide key. The output shaft end fixing device of the forward and reverse motor 7021 has a second helical gear set 7023 with a pointed engagement. The second helical gear set 7023 is meshed and driven by the first helical gear set 7022 in an inserted state.

[0057] In this way, the first helical gear set 7022 can be smoothly driven in both forward and reverse directions, thereby driving the adjusting screw 701 to rotate in both directions to adjust the connection distance between the second connecting rod 4022 and the first connecting rod 4021, thus realizing the individual opening and closing drive of the flip-up door 2. During the driving process, the V-shaped engagement of the first helical gear set 7022 can effectively limit the engagement of the second helical gear set 7023, which has a pointed engagement, to ensure that the second helical gear set 7023 is always in a reasonable meshing connection with the first helical gear 7022. This not only completes the driving of the adjusting screw 701, but also ensures that the transmission connection between the screw drive mechanism 702 and the adjusting screw 701 does not fail, thus ensuring that the individual opening and closing drive of the flip-up door 2 in this invention can be successfully realized.

[0058] The present invention also includes a sealing strip mechanism, which includes a central sealing strip 6 fixed to the end of the top of the flip-down door. The central sealing strip 6 includes a transversely arranged T-shaped sealing strip body 601. One side of the T-shaped sealing strip body 601 is fixedly snapped to the top of the flip-down door. The other side of the T-shaped sealing strip body 601 is provided with two clamping sealing parts 602 in an arc shape. The outermost clamping sealing part 602 is integrally formed and has a tensioning part 603 connected to the outer end of the T-shaped sealing strip body 601.

[0059] After the upper door 2 and the lower door 3 are closed, the outermost clamping and sealing part 602 is clamped between the upper door 2 and the lower door 3. At this time, the outermost clamping and sealing part 602 will be pressed inward to achieve a sealing effect. As the clamping and sealing part 602 is pressed, the tensioning part 603 pulls the outer end of the T-shaped sealing strip body 601 inward, so that it effectively adheres to the upper door 2 in the tensioned state, thereby effectively ensuring the sealing effect between the upper door 2 and the lower door 3.

[0060] The sealing strip mechanism further includes end sealing strips 8 fixed to the upper and lower ends of the opening of the carriage 102. The end sealing strips 8 are installed on the carriage 102 via corresponding mounting plates 9. One side of the mounting plate 9 is fixed to the carriage 102, and the other side of the mounting plate 9 is folded outward. The end sealing strip 8 includes a hollow abutment portion 801 and an inner insertion groove 802 provided in the hollow abutment portion 801. The end sealing strip 8 is fixed to the mounting plate 9 by the insertion groove 802 cooperating with the folded portion of the mounting plate 9. When the upper door 2 and the lower door 3 are closed, their inner walls respectively seal against the hollow abutment portion 801 of the end sealing strip 8. The cross-section of the hollow abutment portion 801 of the end sealing strip 8 is elliptical.

[0061] With the cooperation of the insertion slot 802 and the hollow abutment part 801, the end sealing strip 8 can be installed conveniently, and the end sealing strip 8 can be matched with the closed upper door 2 and lower door 3 after installation to ensure the sealing effect between the upper door 2, lower door 3 and the carriage 102.

[0062] The fixing frame 401 is a right-angled triangular fixing frame. The base 4011 and the hypotenuse 4012 of the fixing frame 401 are made of rods with square cross-sections. The right-angled side 4013 of the fixing frame 401 is made of channel steel. The base 4011 and the hypotenuse 4012 of the fixing frame 401 are fixed together by welding. The outer ends of the base 4011 and the hypotenuse 4012 of the fixing frame 401 are respectively inserted into the right-angled side 4013 of the fixing frame 401 and fixed by welding.

[0063] The right-angled side 4013 of the fixing frame 401 extends to the outside of the inclined side 4012 of the fixing frame 401. A corresponding reinforcing channel steel 10 is fixed to the outside of the extension of the right-angled side 4013 of the fixing frame 401 by welding. The first connecting rod 4021 is hinged to the extension of the right-angled side 4013 of the fixing frame 401 and the reinforcing channel steel 10.

[0064] It can simplify the structure of the fixing frame 401 and effectively ensure the structural stability of the fixing frame 401, as well as the structural stability of the hinge joint between the fixing frame 401 and the first connecting rod 4021.

[0065] The upper end of the upward-opening door 2 and the lower end of the downward-opening door 3 are respectively swayably hinged to the carriage 102 by a plurality of corresponding hinges 11; the downward-opening door 3 is provided with a corresponding hinge seat 12, and the end of the second connecting rod 4022 not connected to the first connecting rod 4021 is hinged to the hinge seat 12.

[0066] The fixing frame 401 and the supporting connecting rod 402 are in pairs, and are respectively set on both sides of the upper door 2 and the lower door 3.

[0067] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A self-propelled field kitchen vehicle with a wing-linked double-door design, characterized in that: include The vehicle body (1) includes a car chassis (101) and a cargo box (102) with a rear door mounted on the car chassis (101). The cargo box (102) has a corresponding opening (1021) on at least one side. The upper end of the opening (1021) of the cargo box (102) is hinged to a downward swing door (2), and the lower end of the opening (1021) of the cargo box (102) is hinged to a downward swing door (3). A linkage drive mechanism (4) is used to drive the upward-opening door (2) and the downward-opening door (3) to open and close synchronously. The linkage drive mechanism (4) includes a fixed frame (401) fixed to the upward-opening door (2) and a support link (402) hinged to one end of the fixed frame (401) that is not connected to the upward-opening door (2). The end of the support link (402) that is not hinged to the fixed frame (401) is hinged to the downward-opening door (3). The downward-opening door (3) is driven by a drive hydraulic cylinder (403) hinged to the carriage (102). When the piston rod of the 3) extends, it drives the downward-opening door (3) to rotate downward around its hinge with the carriage (102) and open, and drives the upward-opening door (2) to rotate upward around its hinge with the carriage (102) through the support rod (402) and the fixing frame (401); when the piston rod of the driving hydraulic cylinder (403) retracts, it drives the downward-opening door (3) to rotate upward around its hinge with the carriage (102) and close, and drives the upward-opening door (2) to rotate downward around its hinge with the carriage (102) through the support rod (402) and the fixing frame (401) and close. The fixing mechanism (5) is made of iron material. The fixing mechanism (5) includes a mounting bracket (501) set on the upper part of the carriage (102). The mounting bracket (501) has an electromagnet (502) adapted to the fixing bracket (401) on its lower side. An electric controller is used to control the working process of the driving hydraulic cylinder (403) and the electromagnet (502). When the piston rod of the driving hydraulic cylinder (403) begins to extend, the electromagnet (502) is de-energized, and when the piston rod of the driving hydraulic cylinder (403) retracts to the position, the electromagnet (502) is energized. It also includes an independent drive mechanism (7) for the upward-opening door, the independent drive mechanism (7) comprising: The adjusting screw (701) and the supporting connecting rod (402) include a first connecting rod (4021) hinged to the fixed frame (401) and a second connecting rod (4022) hinged to the flip-down door (3). The two ends of the adjusting screw (701) are respectively provided with external connecting threads with opposite directions. The end of the first connecting rod (4021) not hinged to the fixed frame (401) and the end of the second connecting rod (4022) not hinged to the flip-down door (3) are respectively connected to the two ends of the adjusting screw (701) by threaded connection. A screw drive mechanism (702) is used to drive the adjusting screw (701) to rotate in both directions. When the adjusting screw (701) rotates in the forward direction, the connection distance between the second connecting rod (4022) and the first connecting rod (4021) is shortened, and the upward-opening door (2) rotates upward around its hinge with the carriage (102) to open. When the adjusting screw (701) rotates in the reverse direction, the connection distance between the second connecting rod (4022) and the first connecting rod (4021) is extended, and the upward-opening door (2) rotates downward around its hinge with the carriage (102) to reset and close.

2. The self-propelled field kitchen vehicle with a wing-width linkage double door as described in claim 1, characterized in that: The screw drive mechanism (702) includes a forward and reverse motor (7021). The middle fixing device of the adjusting screw (701) has a first helical gear set (7022) with a V-shaped engagement. The forward and reverse motor (7021) is directionally and movably mounted on the first connecting rod (4021) or the second connecting rod (4022). The output shaft end fixing device of the forward and reverse motor (7021) has a second helical gear set (7023) with a pointed engagement. The second helical gear set (7023) is meshed and driven to the first helical gear set (7022) in an insert state.

3. A self-propelled field kitchen vehicle with a wing-width linkage double-door as described in claim 1, characterized in that: It also includes a sealing strip mechanism, which includes a central sealing strip (6) fixed to the bottom end of the upper door (2) or the top end of the lower door. The central sealing strip (6) includes a T-shaped sealing strip body (601) arranged laterally. One side of the T-shaped sealing strip body (601) is fixedly snapped to the bottom end of the upper door (2) or the top end of the lower door. The other side of the T-shaped sealing strip body (601) is arc-shaped and inwardly provided with at least one clamping sealing part (602). The outermost clamping sealing part (602) is integrally formed and outwardly provided with a tensioning part (603) connected to the outer end of the T-shaped sealing strip body (601).

4. A self-propelled field kitchen vehicle with a wing-width linkage double door as described in claim 3, characterized in that: The sealing strip mechanism also includes end sealing strips (8) fixed to the upper and lower ends of the opening of the carriage (102). The end sealing strips (8) are installed on the carriage (102) by corresponding mounting plates (9). One side of the mounting plate (9) is fixed to the carriage (102), and the other side of the mounting plate (9) is folded outward. The end sealing strips (8) include a hollow abutment part (801) and an inner insertion groove (802) provided in the hollow abutment part (801). The end sealing strips (8) are fixed to the mounting plate (9) respectively by the insertion groove (802) cooperating with the folded part of the mounting plate (9). When the upper door (2) and the lower door (3) are closed, their inner walls are sealed against the hollow abutment part (801) of the end sealing strips (8).

5. A self-propelled field kitchen vehicle with a wing-width linkage double-door as described in claim 4, characterized in that: The hollow contact portion (801) of the end sealing strip (8) has an elliptical cross-section.

6. A self-propelled field kitchen vehicle with a wing-width linkage double-door as described in claim 1, characterized in that: The fixing frame (401) is a right-angled triangular fixing frame. The base (4011) and the hypotenuse (4012) of the fixing frame (401) are made of rods with square cross-sections. The right-angled side (4013) of the fixing frame (401) is made of channel steel. The base (4011) and the hypotenuse (4012) of the fixing frame (401) are fixed by welding. The outer ends of the base (4011) and the hypotenuse (4012) of the fixing frame (401) are respectively inserted into the right-angled side (4013) of the fixing frame (401) and fixed by welding.

7. A self-propelled field kitchen vehicle with a wing-width linkage double-door as described in claim 6, characterized in that: The right-angled side (4013) of the fixing frame (401) extends to the outside of the hypotenuse (4012) of the fixing frame (401). A corresponding reinforcing channel steel (10) is fixed to the outside of the extension of the right-angled side (4013) of the fixing frame (401) by welding. The first connecting rod (4021) is hinged to the extension of the right-angled side (4013) of the fixing frame (401) and the reinforcing channel steel (10).

8. A self-propelled field kitchen vehicle with a wing-width linkage double door as described in claim 6, characterized in that: The upper end of the upward-opening door (2) and the lower end of the downward-opening door (3) are respectively hinged to the carriage (102) by multiple corresponding hinges (11); the downward-opening door (3) is provided with a corresponding hinge seat (12), and the end of the second connecting rod (4022) not connected to the first connecting rod (4021) is hinged to the hinge seat (12).

9. A self-propelled field kitchen vehicle with a wing-width linkage double door as described in claim 1, characterized in that: The fixing frame (401) and the supporting connecting rod (402) are in pairs, and are respectively set on both sides of the upper door (2) and the lower door (3).

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