Automatic dumping car with pneumatic control function

Abstract

The invention provides a self-dumping car with a pneumatic control function, and relates to the technical field of self-dumping cars, the self-dumping car with the pneumatic control function comprises a compartment, a bottom beam, a tipping air cylinder, an air control pipeline and a control assembly, the two ends of the tipping air cylinder are hinged to the carriage and the bottom beam correspondingly, and the tipping air cylinder is used for driving the carriage to tip over towards the two sides. The air control pipeline comprises an electric control valve, the electric control valve is correspondingly connected with the tipping air cylinder and is in communication connection with the control assembly, and the control assembly is used for obtaining an operation instruction and tipping state data of the carriage and controlling the electric control valve to act according to the operation instruction and the tipping state data. According to the invention, the unloading efficiency and the applicability are relatively high.

Description

Technical Field

[0001] This invention relates to the field of self-tipping vehicle technology, and more specifically, to a self-tipping vehicle with pneumatic control function. Background Technology

[0002] Self-tipping carts are mostly used for transporting goods such as ores. In related technologies, unloading pits are usually set up near the track at the unloading site, and the edge of the unloading pit is far from the center of the track. Side-tipping unloading is usually used at this location. However, this type of self-tipping cart has problems such as mechanical failure of the doors during unloading and difficulty in unloading scenarios of trains and other vehicles. Summary of the Invention

[0003] The problem that this invention aims to solve is that self-tipping vehicles suffer from mechanical door malfunctions during unloading and are difficult to apply to unloading scenarios of trains and other vehicles.

[0004] To address the aforementioned problems, this invention provides a self-tipping vehicle with pneumatic control, comprising a cargo box, a bottom beam, a tilting cylinder, a pneumatic control pipeline, and a control assembly. The cargo box is detachably hinged to the bottom beam. The two ends of the tilting cylinder are respectively hinged to the cargo box and the bottom beam, and are used to drive the cargo box to tilt to both sides. The pneumatic control pipeline includes electrically controlled valves, which are respectively connected to the tilting cylinders and communicatively connected to the control assembly. The control assembly is used for: The system acquires control commands and tilting status data of the carriage. Based on the control commands and tilting status data, it controls the electronic control valve to actuate, thereby injecting compressed gas into the tilting cylinder, which in turn drives the carriage to tilt and unload the cargo, or to discharge the compressed gas from the tilting cylinder, which in turn causes the carriage to reset after tilting and unloading or to reset prematurely.

[0005] Optionally, the air control pipeline further includes an air supply assembly, which is connected to the two tilting cylinders via two electrically controlled valves. The air supply assembly is used to supply compressed gas to the corresponding tilting cylinder through the corresponding electrically controlled valve.

[0006] Optionally, the air supply assembly includes a main shut-off valve, a main air supply pipe, and a first air inlet pipe. The main air supply pipe is used to supply compressed gas, and the first air inlet pipe is used to connect the main air supply pipe and the electrically controlled valve. The main shut-off valve is installed on the first air inlet pipe.

[0007] Optionally, each of the electronically controlled valves is connected to the tilting cylinder located on one side of the carriage, the first air inlet of each electronically controlled valve is connected to the main air supply pipe through the first air inlet pipe, the first air outlet of each electronically controlled valve is connected to the tilting cylinder, and the second air outlet of the electronically controlled valve is used to discharge compressed gas.

[0008] Optionally, the air supply assembly further includes an auxiliary air storage cylinder, the third air inlet of which is connected to the end of the first air inlet pipe away from the main air supply pipe via a one-way valve. The one-way valve is used to prevent compressed gas from flowing from the auxiliary air storage cylinder to the first air inlet pipe. The third air outlet of the auxiliary air storage cylinder is used to connect to the second air inlet of at least one of the electrically controlled valves.

[0009] Optionally, the tilting state data includes the tilting angle of the carriage and the opening degree of the side doors on both sides. The tilting cylinders are located on both sides of the carriage, and the electronically controlled valves are correspondingly configured with respect to the tilting cylinders. The control components are specifically used for: The control command is obtained and the corresponding electronic control valve is energized to inject compressed gas into the corresponding tilting cylinder, so that the carriage begins to tilt. The overturning state data is acquired and judged. When the overturning angle of the carriage is within the set tilt angle range, the opening degree of the side doors on both sides is judged. If the side door to be opened corresponding to the operation command is not opened and / or the side door to be closed is opened, the carriage is determined to be abnormal, and the power to the electronic control valve is cut off to discharge compressed air from the corresponding tilting cylinder, so that the carriage is reset. If the side door to be opened corresponding to the operation command is opened and the side door to be closed remains closed, the carriage is determined to be normal, and compressed gas continues to be injected into the corresponding tilting cylinder through the electronic control valve until the tilting and unloading are completed.

[0010] Optionally, the control component is further configured to: If the tilting angle of the carriage reaches the preset tilting angle for pre-ventilation, the power to the electronic control valve is cut off to discharge the compressed air in the tilting cylinder through the electronic control valve, so that the carriage continues to tilt and unload.

[0011] Optionally, the control component includes a PLC controller and / or an operating terminal. The PLC controller is used to acquire the tilting state data, and the operating terminal includes a terminal and a wireless transmitter. The terminal and the wireless transmitter are respectively connected to the PLC controller and are used to: acquire the manipulation command and transmit it to the PLC controller; the electrically controlled valve is connected to the PLC controller.

[0012] Optionally, the self-tipping vehicle with pneumatic control function also includes a tilt detection component. The tilt detection component includes limit switches and tilt sensors. The limit switches are installed at the side door positions on both sides of each of the carriages. The tilt sensors are installed at the bottom of the carriages. The limit switches are connected to the PLC controller and are used to: detect the opening degree of the side doors on both sides of the carriage and transmit it to the PLC controller. The tilt sensors are connected to the PLC controller and are used to: detect the tilt angle of the carriage and transmit it to the PLC controller.

[0013] Optionally, the self-tipping vehicle with pneumatic control function also includes a tipping mechanism. Each of the compartments is equipped with the tipping mechanism on one side. When the compartment tipps to one side, the tipping mechanism on one side is configured to drive the side door on the same side to open, so as to unload the cargo. At the same time, the tipping mechanism on the other side is configured to inhibit the opening of the side door on the same side.

[0014] Optionally, the tilting mechanism includes a hinge and a restraining elbow. The restraining elbow is hinged to the carriage, the hinge is integrally arranged with the side door, the hinge is hinged to the carriage and detachably connected to the first end of the restraining elbow; the second end of the restraining elbow is detachably connected to the carriage, the third end is detachably connected to the bottom beam, and the fourth end of the restraining elbow is elastically connected to the carriage.

[0015] The beneficial effects of the self-tipping cart with pneumatic control function of the present invention are as follows: the carriage is hinged to the bottom beam, and the two ends of the tilting cylinder are respectively hinged to the carriage and the bottom beam and used to drive the carriage to tilt to both sides. Thus, the carriage can flexibly tilt to one side for unloading, effectively adapting to the site unloading needs of trains and other vehicles. Furthermore, the air control pipeline includes an electrically controlled valve connected to the tilting cylinder, used to fill the tilting cylinder with compressed gas so that the tilting cylinder drives the carriage to tilt and unload, or to discharge the compressed gas from the tilting cylinder so that the carriage returns to its original position after tilting. Therefore, in conjunction with the acquired operating commands and the tilting state data of the carriage, and controlling the operation of the electrically controlled valve according to the operating commands and tilting state data, when the tilting state data of the carriage is normal, compressed gas is filled into the tilting cylinder, thereby enabling the carriage to tilt to either side for unloading, which helps to improve unloading efficiency. When the tilting operation begins based on the control commands and the tilting status data of the carriage, and a mechanical fault is detected in the carriage based on the tilting status data (such as the inability to open the unloading door on the unloading side normally), or when unloading is completed, compressed gas can be discharged based on the electronically controlled valve, allowing the carriage to be reset in time so that loading can continue or maintenance can be carried out. Furthermore, the compressed gas can be obtained from the air pump unit of the train, avoiding the use of high-power electricity required for hydraulic oil and other driving methods. This is suitable for unloading scenarios of trains and other vehicles. In addition, the control components can be configured with human-machine interface (such as a fixed on-board control panel), control terminal, etc., to control the electronically controlled valve. This eliminates the need for staff to operate near the carriage, ensuring safe operation and reducing the potential hazards to personnel caused by dust raised during unloading. It also avoids the potential dangers to personnel caused by manual unloading. Attached Figure Description

[0016] Figure 1 A side view of the carriage in the reset state according to an embodiment of the present invention is shown; Figure 2 A side view of the carriage tilting to one side is shown in an embodiment of the present invention; Figure 3 This invention illustrates the overall structure of a self-tipping vehicle with pneumatic control functionality in an embodiment of the present invention. Figure 4 A schematic diagram of the structure of the wind control pipeline in an embodiment of the present invention is shown; Figure 5 A schematic diagram of the tilting mechanism in an embodiment of the present invention is shown; Figure 6 A schematic diagram of the unloading process performed by the self-tipping vehicle in an embodiment of the present invention is shown.

[0017] Explanation of reference numerals in the attached figures: 1. Carriage; 2. Bottom beam; 3. Tilting cylinder; 4. Air brake assembly; 5. PLC control box; 6. Rechargeable battery; 7. Battery box; 8. Connecting wires; 9. Electronic control valve; 10. Bogie; 11. Tilting mechanism; 12. Coupler buffer assembly; 13. First limit switch; 14. Tilt sensor; 15. Second limit switch; 16. Hinge; 17. Roller; 18. Suppression elbow; 19. Compression spring; 20. Lead screw; 21. Split elbow; 22. Bottom beam support; 23. Carriage support; 24. Main cut-off valve; 25. Main air supply pipe; 26. Manual operating valve; 27. Support cut-off valve; 28. Auxiliary air storage cylinder; 29. ​​First air inlet pipe; 30. Second air inlet pipe. Detailed Implementation

[0018] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0019] In the attached diagram, the Z-axis represents the vertical direction, i.e., up and down, with the positive direction of the Z-axis representing up and the negative direction representing down. The X-axis represents the horizontal direction and is designated as front and back, with the negative direction of the X-axis representing the front and the positive direction representing the back. The Y-axis represents the left and right direction, with the positive direction of the Y-axis representing the right and the negative direction representing the left. It should be noted that the aforementioned representations of the Z, Y, and X axes are merely for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention.

[0020] In the description of this specification, references to terms such as "embodiment," "one embodiment," and "one implementation" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or implementation is included in at least one embodiment or illustrative implementation of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or implementation. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or implementations.

[0021] Reference Figure 1 and Figure 2 As shown in the figure, this invention proposes a self-tipping vehicle with pneumatic control function, including a carriage 1, a bottom beam 2, a tilting cylinder 3, a wind control pipeline, and a control component. The carriage 1 and the bottom beam 2 are detachably hinged. The two ends of the tilting cylinder 3 are respectively hinged to the carriage 1 and the bottom beam 2 and are used to drive the carriage 1 to tilt to both sides. The wind control pipeline includes an electrically controlled valve 9, which is respectively connected to the tilting cylinder 3 and is communicatively connected to the control component. The control component is used for: The system acquires control commands and tilting status data of the carriage 1. Based on the control commands and tilting status data, it controls the electronic control valve 9 to inject compressed gas into the tilting cylinder 3, thereby causing the tilting cylinder 3 to drive the carriage 1 to tilt and unload, or to discharge the compressed gas from the tilting cylinder 3, thereby causing the carriage 1 to reset after tilting and unloading, or to reset prematurely.

[0022] Specifically, the carriage 1 can be a welded steel structure for carrying goods, and it can be provided with hinge seats on both sides of the bottom to cooperate with the bottom beam 2. The hinge can adopt an open support design, that is, the hinge seat can be separated from the bottom beam 2, so that the hinge seat on one side of the carriage 1 can detach from the bottom beam 2 to tilt and rotate around the hinge seat on the other side, and achieve self-alignment and load-bearing by gravity during reset; the bottom beam 2 is the main load-bearing frame of the vehicle, which can be welded from structural steel, and has installation interfaces for the carriage 1, tilting cylinder 3, etc. on the upper part, which is the structural foundation of the whole vehicle; the cylinder body end of the tilting cylinder 3 is hinged to the bottom beam 2. The piston rod is hinged to the carriage 1. When compressed air enters the cylinder, the piston rod extends, providing a tilting driving force for the carriage 1. When the gas in the cylinder is discharged, the piston rod retracts under the weight of the carriage 1, achieving tilting reset. The electric control valve 9 can be a pneumatically controlled directional valve. In one scenario, when the electric control valve 9 is energized, the main valve core switches to the working position, connecting the air source and the tilting cylinder 3, causing the piston rod of the tilting cylinder 3 to extend. When de-energized, the main valve core returns to the safe position under the action of the return spring, cutting off the air source and discharging the compressed gas in the cylinder (e.g., connecting its exhaust port to the atmosphere), thus achieving tilting reset. The piston rod of the tilting cylinder 3 retracts; the compressed air in the air control pipeline can use the train's air pump unit as the power source, and is input to the tilting cylinder 3 via the electronic control valve 9, or output via the electronic control valve 9, to extend or retract the piston rod of the tilting cylinder 3; the control of the tilting cylinder 3 is indirectly achieved through the electronic control valve 9, and the operating commands are used by the dispatchers to precisely control specific cars in the train, such as "tilt to the left"; the tilting status data can include the tilt angle of the carriage 1 and the opening or closing status of the side doors, and the control component will input both... The system incorporates logical associations (e.g., when the tilting angle reaches 10°-15°, the unloading side door should be opened and the non-unloading side door should be closed). If the data is abnormal, the system can immediately and automatically interrupt the tilting operation (by venting through the electronically controlled valve 9 to achieve early reset), preventing cargo spillage or failure to complete unloading, thus achieving proactive safety protection. If the control command is to start tilting and the data is normal, the electronically controlled valve 9 is switched to the working position, allowing compressed air to be injected into the designated tilting cylinder 3 through the air control pipeline until its piston rod extends, thereby lifting the carriage 1 to tilt and unload towards the target side.

[0023] In this embodiment, the carriage 1 is hinged to the bottom beam 2. The two ends of the tilting cylinder 3 are respectively hinged to the carriage 1 and the bottom beam 2 and used to drive the carriage 1 to tilt to both sides. Thus, the carriage 1 can flexibly tilt to one side for unloading, effectively adapting to the unloading needs of trains and other vehicles. Furthermore, the air control pipeline includes an electrically controlled valve 9, which is connected to the tilting cylinder 3 and used to fill the tilting cylinder 3 with compressed gas, causing the tilting cylinder 3 to drive the carriage 1 to tilt and unload, or to discharge the compressed gas from the tilting cylinder 3, causing the carriage 1 to return to its original position after tilting. Therefore, in conjunction with the acquired operating commands and the tilting state data of the carriage 1, and controlling the operation of the electrically controlled valve 9 according to the operating commands and tilting state data, when the tilting state data of the carriage 1 is normal, compressed gas is filled into the tilting cylinder 3, thereby enabling the carriage 1 to tilt to either side for unloading, which helps improve unloading efficiency. When the tilting operation begins based on the control command and the tilting status data of carriage 1, and a mechanical fault is detected in carriage 1 based on the tilting status data (e.g., the unloading door on the unloading side cannot be opened normally), or when unloading is completed, compressed gas can be discharged based on the electronically controlled valve 9, allowing carriage 1 to be reset in time so that loading or maintenance can continue. The compressed gas can be obtained from the air pump unit of the train, avoiding the use of high-power electricity required for hydraulic oil and other drives. This is suitable for unloading scenarios of trains and other vehicles. In addition, the control component can be configured with a human-machine interface (e.g., a fixed on-board control panel), control terminal, etc., to control the electronically controlled valve 9. This way, the staff does not need to be near carriage 1 to operate, ensuring safe operation. It can reduce the potential hazards to personnel caused by dust raised during unloading and avoid the potential dangers to personnel caused by manual unloading.

[0024] This invention features a novel structure, advanced technology, safety and reliability, and comprehensive functions, significantly improving the unloading efficiency and operational safety of railway pneumatic self-tipping cars.

[0025] like Figure 1 , Figure 2 and Figure 3 As shown, in an optional embodiment of the present invention, the tilting cylinder 3 is provided in two sets, and the two sets of tilting cylinder 3 are symmetrically distributed along the width direction of the carriage 1. The two sets of tilting cylinder 3 are used to drive the carriage 1 to tilt in opposite directions.

[0026] Specifically, the tilting cylinders 3 are arranged in two symmetrical sets. These two sets of cylinders are symmetrically distributed along the width direction of the carriage 1 (i.e., along the Y direction in the figure). Each set of tilting cylinders 3 is independently responsible for driving the carriage 1 to tilt in a specific direction, and the driving directions of the two sets of tilting cylinders 3 are opposite to each other. Specifically, when the set of tilting cylinders 3 on the left extends, it drives the carriage 1 to tilt clockwise (or to the right) around the hinge axis. The rotation center of the carriage 1's tilting, the hinge center of the carriage 1 and the tilting cylinder 3 are on the same straight line, so the rotation will not conflict. Conversely, when the set of tilting cylinders 3 on the right extends, it drives the carriage 1 to tilt counterclockwise (or to the left). These two sets of symmetrical and oppositely arranged cylinders together constitute the core power mechanism for the carriage 1 to achieve stable bidirectional tilting.

[0027] Therefore, the above symmetrical distribution ensures that the force state of the carriage 1 is completely symmetrical when it tilts to the left or right, avoiding problems such as instability; at the same time, the use of two sets of cylinders of the same specification and symmetrical arrangement improves the versatility of parts replacement.

[0028] like Figure 2 , Figure 4 As shown, in an optional embodiment of the present invention, the air control pipeline further includes an air supply component, which is connected to two tilting cylinders 3 via two electrically controlled valves 9. The air supply component is used to supply compressed gas to the corresponding tilting cylinder 3 through the corresponding electrically controlled valve 9.

[0029] Specifically, the air control pipeline is a pneumatic control system that connects the air source and the actuator. In addition to the electric control valve 9, which is the core control element, it also integrates a dedicated air supply assembly. This air supply assembly serves as the high-pressure air source supply unit of the system. Its output end is connected to the air inlet end of the electric control valve 9 through a pipeline, while the output end of the electric control valve 9 is connected to the working chamber of the tilting cylinder 3. Thus, the flow path and on / off state of the compressed gas stored and transported by the air supply assembly are completely controlled by the electric control valve 9. When the electric control valve 9 is activated, the compressed gas in the air supply assembly can be accurately and controllably transported to the tilting cylinder 3 through the opening channel inside the electric control valve 9, thereby converting it into the power to drive the carriage 1 to tilt.

[0030] Thus, the air supply assembly provides a stable air source, and the electronically controlled valve 9 acts as a switch to control the airflow, ultimately driving the tilting cylinder 3 to move.

[0031] like Figure 2 , Figure 3 and Figure 4 As shown, in this optional embodiment, each side of the carriage 1 is provided with at least one hinge point, and each hinge point is used to achieve an open hinge connection with the bottom beam 2.

[0032] Specifically, the carriage 1 has at least one hinge point on each of its two side frames in the width direction. Each hinge point is not a fixed hinge that is tightly fitted to the bottom beam 2 in a closed manner, but rather adopts an open or support-type hinge structure. For example, the hinge shaft of the carriage 1 rests on the U-shaped groove or arc-shaped support surface of the bottom beam 2. The bottom beam 2 is the main load-bearing frame of the vehicle and can be welded from structural steel. Its lower part is connected to the bogie through a center plate to accommodate the relative rotation between the vehicle and the bogie. Therefore, when the carriage 1 is in a horizontal state, the hinge points on both sides are in contact with the corresponding support structure of the bottom beam 2, achieving stable load bearing. When the tilting cylinder 3 on one side extends and lifts the carriage 1 on that side, the hinge point on the lifted side will gradually detach from the contact with the bottom beam 2 as the carriage 1 rotates, so that the weight of the carriage 1 is completely transferred to the hinge point of the tilting cylinder 3 and the bottom beam 2 on the other side. Conversely, when the tilting cylinder 3 retracts and exhausts air, and the carriage 1 falls back under its own weight, the hinge point on that side will automatically fall back and fit into the support structure of the bottom beam 2, restoring a stable horizontal load bearing state.

[0033] Furthermore, the self-tipping vehicle with pneumatic control function provided by the present invention has a cargo box 1, which is a container for loading goods and can be unloaded by tilting cylinder 3; the bottom beam 2 is a pneumatic component mainly used to support the cargo box 1, and its lower part is connected to the bogie 10 through a center plate; the tilting cylinder 3, air control pipeline, air brake assembly 4, rechargeable battery 6, and electronic control valve 9 are installed on the side of the bottom beam 2; the bogie 10 is the running device of the self-tipping vehicle, and can be braked to stop by the air brake assembly 4; the coupler buffer assembly 12 is installed at both ends of the bottom beam 2 for coupling with other vehicles for transportation; the rechargeable battery 6 can be used to supply power to the electronic control valve 9, etc.

[0034] like Figure 4 As shown, in an optional embodiment of the present invention, the air supply assembly includes a main shut-off valve 24, a main air supply pipe 25, and a first air inlet pipe 29. The main air supply pipe 25 is used to supply compressed gas, and the first air inlet pipe 29 is used to connect the main air supply pipe 25 and the electrically controlled valve 9. The main shut-off valve 24 is installed on the first air inlet pipe 29.

[0035] Specifically, the air supply assembly includes a main shut-off valve 24, a main air supply pipe 25, and a first air inlet pipe 29, forming the core air supply trunk of the system. Among them, the main air supply pipe 25 serves as the main trunk for pressurized gas transportation, directly responsible for transporting compressed air from the train's main air supply pipe 25 downstream; the first air inlet pipe 29 serves as a key branch pipe, used to connect the main air supply pipe 25 with the air inlet end of the electronically controlled valve 9, forming a power transmission path; and the main shut-off valve 24 serves as the system's main air source switch, installed on the first air inlet pipe 29, used to quickly and reliably cut off the air supply source of the entire vehicle during maintenance, repair, or emergency situations.

[0036] Thus, the centralized distribution and precise delivery of gas to each car are guaranteed; for multi-car trains, only one main air supply pipe 25 is needed at a minimum (each section can be equipped with a shut-off valve at the car location to ensure gas transmission or shut off); at the same time, the main shut-off valve 24 is integrated into the first air inlet pipe 29, which greatly improves maintenance safety and operational flexibility.

[0037] like Figure 4 As shown, in an optional embodiment of the present invention, each of the electronically controlled valves 9 is connected to the tilting cylinder 3 located on one side of the carriage 1. The first air inlet of each of the electronically controlled valves 9 is connected to the main air supply pipe 25 through the first air inlet pipe 29. The first air outlet of each of the electronically controlled valves 9 is connected to the tilting cylinder 3. The second air outlet of the electronically controlled valve 9 is used to discharge compressed gas.

[0038] Specifically, the electronically controlled valve 9 can be a direct-acting solenoid valve; each of the electronically controlled valves 9 is specifically designed to drive the tilting cylinder 3 located on one side of the carriage 1, and the three together form an independent pneumatic drive unit; the connection relationship of this unit is as follows: the first air inlet end of each electronically controlled valve 9 is connected to the main air supply pipe 25 through the first air inlet pipe 29 to obtain the power air source; its first air outlet end is connected to the corresponding tilting cylinder 3 through a pipeline to output the driving gas; at the same time, the second air outlet end of the electronically controlled valve 9 is specifically used to quickly discharge the compressed gas from the tilting cylinder 3 to the atmosphere when reset or safe exhaust is required, thereby depressurizing the cylinder and allowing the carriage 1 to self-reset.

[0039] Therefore, by configuring an independent pneumatic drive unit (electronic control valve 9 is connected to the tilting cylinder 3 on the same side) on each side of the carriage 1, the advantages are as follows: the first air inlet end (connected to the main air supply pipe 25 through the first air inlet pipe 29) provides a unified and stable air source, the first air outlet end is directly connected to the cylinder to ensure efficient power transmission, and the independent second air outlet end is dedicated to exhaust, so that the inflation drive and the deflation reset path are separated, avoiding air path interference; the independence of the unit on one side isolates the fault and does not affect the tilting function on the other side.

[0040] like Figure 4 As shown, in an optional embodiment of the present invention, the air supply assembly further includes an auxiliary air storage duct 28. The third air inlet of the auxiliary air storage duct 28 is connected to the end of the first air inlet pipe 29 away from the main air supply pipe 25 via a one-way valve. The one-way valve is used to prevent compressed gas from flowing from the auxiliary air storage duct 28 to the first air inlet pipe 29. The third air outlet of the auxiliary air storage duct 28 is used to connect to the second air inlet of at least one of the electrically controlled valves 9.

[0041] Specifically, compressed air is drawn directly from the main air supply pipe 25, flows through the main shut-off valve 24, and is supplied directly to the main air inlet (first air inlet end) of the electronically controlled valve 9 through the first air inlet pipe 29; this path provides the maximum power for the tilting action with low flow resistance and high response. A branch line is branched off from the first air inlet pipe 29 and connected to the air inlet of the auxiliary air storage cylinder 28 via a one-way valve. When the main air supply pipe 25 is pressurized, compressed air is continuously supplied to the auxiliary air storage cylinder 28 through this one-way valve until the pressure is balanced. The one-way valve is used to prevent backflow of gas inside the cylinder. The auxiliary air storage tank 28, which is filled with gas, is used as a dedicated and pressure-stabilized air source for the pilot solenoid valve inside the electric control valve 9. It is connected to the air inlet of the pilot valve. The gas in the auxiliary air storage tank 28 is not directly used to drive the tilting cylinder 3, but is used to control the reversing of the electric control valve 9 itself. The electric control valve 9 is a pilot-operated solenoid valve. After the operator (with the help of a human-machine interface, etc.) presses the corresponding switch, the pilot valve coil of the electric control valve 9 is energized, and its valve core moves to introduce the control air source from the auxiliary air storage tank 28 into the pilot control chamber (X chamber) of the main valve. As long as the pilot valve is continuously energized, the X chamber will maintain high pressure, the main valve core will be pushed to the working position, the main air passage will be continuously open, and the cylinder will continuously intake air and maintain the extended state. In the event of a power failure, the stable air pressure provided by the auxiliary air reservoir 28 ensures the movement of the pilot valve core, venting the pressure in the main valve control chamber. Under the powerful thrust of the main return spring, the main valve core returns to the safe position. After the main valve core is reset, its internal flow channel switches, connecting port A (connected to the tilting cylinder 3) with port EA (open to the atmosphere), while simultaneously closing port P (connected to the first air inlet pipe 29). The gas in the cylinder is discharged, and the carriage 1 automatically repositions. Path 1 (Main Drive Gas Path): Main air supply pipe 25 → Main shut-off valve 24 → First air inlet pipe 29 → Branch shut-off valve 27 → Main valve inlet of electric control valve 9 (first air inlet end) → Working port of electric control valve 9 (first air outlet end) → Tilting cylinder 3 cylinder body; Route 2 (Manual Backup Gas Line): Main air supply pipe 25 → manual operating valve 26 air inlet (fourth air inlet end) → manual operating valve 26 working port (fourth air outlet end) → second air inlet pipe 30 → tilting cylinder 3 cylinder body; Path 3 (Energy Storage): Main air supply duct 25 → First air inlet duct 29 → One-way valve → Auxiliary air storage cylinder 28 air inlet (third air inlet end) → Auxiliary air storage cylinder 28 air outlet (third air outlet end) → Pilot valve air inlet of electric control valve 9 (second air inlet end); Therefore, by setting up the auxiliary air storage duct 28, the tilting cylinder 3 can automatically and reliably exhaust air quickly regardless of the cause of system power failure, and the carriage 1 can safely reset under its own weight, ensuring the reliability of the reset process.

[0042] like Figure 4 As shown, in an optional embodiment of the present invention, the air supply assembly further includes a manual operating valve 26, the fourth air inlet of the manual operating valve 26 being connected to the main air supply pipe 25, the fourth air outlet of the manual operating valve 26 being connected to the tilting cylinder 3, and the fifth air outlet of the manual operating valve 26 being used to discharge compressed gas.

[0043] Specifically, two air sources branch off downstream of the main air supply duct 25 to form a core air supply circuit; one source connects to the air inlet (first air inlet end) of the electrically controlled valve 9 via the first air inlet duct 29, which can be driven by the PLC control box 5 electrically connected to it, forming an automatic control channel; the other source connects to the air inlet (fourth air inlet end) of the manually operated valve 26, forming an independent and parallel manual emergency channel, which can be switched to manual operation when the electrically controlled valve 9 is not in use or when the electrically controlled valve 9 malfunctions; a cut-off valve 27 is also installed at the end of the first air inlet duct 29 near the tilting cylinder 3, and the cut-off valve 27 and The outlet of the manual operating valve 26 can be connected to the tilting cylinder 3. During manual operation, both the main shut-off valve 24 and the branch shut-off valve 27 are closed. By opening the manual operating valve 26, compressed gas can be introduced into the tilting cylinder 3, thereby extending the piston rod of the tilting cylinder 3 on that side. By operating the manual operating valve 26 again, the pressure can be released, and the compressed air can be discharged from the fifth outlet. If discharged into the air, the piston rod of the tilting cylinder 3 on that side can be retracted. The compressed air required by the air supply assembly can come from the air pump unit corresponding to the air brake assembly 4, thus eliminating the need for a separate hydraulic power unit.

[0044] Therefore, the air supply component can be set up in two ways to achieve unloading operations on the car compartment 1; or to perform pre-emptive exhaust and reset operations, thereby improving safety.

[0045] like Figure 2 and Figure 5 As shown, as an optional embodiment of the present invention, it also includes a tilting mechanism 11. Each of the carriages 1 is equipped with the tilting mechanism 11 on one side. When the carriage 1 tilts to one side, the tilting mechanism 11 on one side is configured to drive the side door on the same side to open, so as to realize unloading; at the same time, the tilting mechanism 11 on the other side is configured to inhibit the opening of the side door on the same side.

[0046] Specifically, each side door of the carriage 1 is independently equipped with a complete tilting mechanism 11, which is a mechanical logic unit that can respond differently to the tilting motion of the carriage 1. For example, the tilting mechanism 11 can adopt a crank-rocker mechanism, in which the door pivot acts as a rocker and is connected to a short crank fixed on the carriage 1 through a connecting rod. When the carriage 1 is horizontal, the connecting rod and the rocker are at or near the collinear "transmission dead point" position, at which time the mechanism is self-locked and the door cannot be opened freely. When the carriage 1 tilts to one side, the mechanism on the tilting side is disengaged from the dead point due to the input motion of the crank, thereby driving the door on the same side to open along a predetermined trajectory. At the same time, the mechanism on the non-tilting side is pushed more tightly to the dead point position under the action of the input motion, thereby suppressing any opening tendency of the door on the same side.

[0047] Therefore, the tilting mechanism 11 can transform the tilting motion of the carriage 1 into deterministic and differentiated control of the two side doors, thereby enabling the opening of the target side door and unloading to that side.

[0048] like Figure 2 and Figure 5 As shown, in an optional embodiment of the present invention, the tilting mechanism 11 includes a hinge 16 and a restraining elbow 18. The restraining elbow 18 is hinged to the carriage 1. The hinge 16 is integrally arranged with the side door and is hinged to the carriage 1 and detachable from the first end of the restraining elbow 18. The second end of the restraining elbow 18 is detachable from the carriage 1, the third end is detachable from the bottom beam 2, and the fourth end of the restraining elbow 18 is elastically connected to the carriage 1. Thus, when the tilting cylinder 3 on one side of the carriage 1 extends, the first and second ends of the restraining elbow 18 of the tilting mechanism 11 on the same side remain in contact, while the third end disengages, so that the side door on the same side is closed. Meanwhile, the first, second, and third ends of the restraining elbow 18 of the tilting mechanism 11 on the other side all disengage, so that the side door on the same side is opened.

[0049] Specifically, one end of the hinge 16 is a straight section and fixed to the outside of the side door, or the straight section directly serves as the side door. The other end has an inner arc surface, and in the reset state, the inner arc surface faces the inside of the carriage 1. The hinge 16 is hinged to the main body of the carriage 1, and the restraining elbow 18 is hinged to the bottom of the carriage 1. The first end of the restraining elbow 18 is equipped with a roller 17, which abuts against the inner arc surface of the hinge 16. In the reset state, the second end of the restraining elbow 18 abuts against the carriage support 23 on the carriage 1, and the third end (i.e., the elbow 21) abuts against the bottom beam support 22 on the bottom beam 2. Both the bottom beam support 22 and the carriage support 23 are used to prevent the side door from rotating inward when it is closed (e.g., ...). Figure 5The second, third, and fourth ends are located on the same side (as shown by the counterclockwise rotation). The abutment relationship is used to prevent the first end from disengaging from the inner arc surface of the hinge 16 in the non-tilting state (reset state), thereby preventing the side door from opening and ensuring that the side door is tightly closed when fully loaded. The elastic connection structure of the fourth end specifically includes a compression spring 19, a lead screw 20, a first connector, and a second connector. One end of the compression spring 19 is hinged to the restraining elbow 18 (the fourth end) through the first connector, and the other end is provided with a second connector and threadedly connected to the lead screw 20. The end of the lead screw 20 away from the compression spring 19 is hinged to the carriage 1. When the carriage 1 is not tilted, the pressure of the compression spring 19 prevents the roller 17 from being pulled away. The hinge 16 disengages from its inner arc surface, keeping the side door closed. When the operator sends compressed air into the tilting cylinder 3 via the electronic control valve 9 using the PLC control box 5, the piston rod of the tilting cylinder 3 causes the carriage 1 to tilt to one side. During this process, the inner arc surface of the hinge 16 of the tilting mechanism 11 on one side is in close contact with the roller 17 mounted on the restraining elbow 18. The roller 17 slides along the roller, allowing the hinge 16 to control the gradual opening of the unloading side door. At the same time, the restraining elbow 18 on the other side (the side where the piston rod of the tilting cylinder 3 is located), corresponding to the non-unloading side door, is pressed against the inner arc surface of the hinge 16 by the compression spring 19 on the screw 20, thus restricting the abnormal opening of the non-unloading side door.

[0050] Thus, the tilting mechanism 11 and tilting cylinder 3 on each side ensure that when the tilting cylinder 3 on that side extends, the carriage 1 can be tilted to the other side, and the side door on the other side can be opened to unload the cargo, while the side door on the side where the tilting cylinder 3 is located remains closed, thus meeting the requirement of unloading on one side and adapting to different unloading scenarios.

[0051] like Figure 6 As shown, in an optional embodiment of the present invention, the tilting state data includes the tilting angle of the carriage 1 and the opening degree of the side doors on both sides. The tilting cylinders 3 are disposed on both sides of the carriage 1, and the electronically controlled valves 9 are correspondingly disposed with the tilting cylinders 3. The control components are specifically used for: The operation command is obtained and the corresponding electronic control valve 9 is energized to inject compressed gas into the corresponding tilting cylinder 3, so that the carriage 1 begins to tilt. The overturning state data is acquired and judged. When the overturning angle of the carriage 1 is within the set tilt angle range, the opening degree of the two side doors is judged. If the side door to be opened corresponding to the operation command is not opened and / or the side door to be closed is opened, the carriage 1 is determined to be abnormal, and the power to the electronic control valve 9 is cut off to discharge compressed air from the corresponding tilting cylinder 3, so that the carriage 1 is reset. Specifically, the operator inputs control commands through the control panel to send compressed air into the tilting cylinder 3 through the electronic control valve 9. The piston rod of the tilting cylinder 3 drives the carriage 1 to tilt to one side. At this time, the side door on the side to be unloaded gradually opens under the control of the tilting mechanism 11. During the tilting unloading process, the opening status can be obtained through the opening and closing detection switch and the tilting angle of the carriage 1 can be obtained through the tilt detection sensor. The detected door opening and closing status and tilt angle are transmitted to the PLC controller in real time as trigger conditions, which in turn drives the electronic control valve 9 to allow air to enter or exit the tilting cylinder 3. The piston rod of the tilting cylinder 3 rises or falls, completing the unloading and reset functions of the pneumatic self-tipping vehicle. In simple terms, the tilting cylinder 3 on one side is controlled by the electronically controlled valve 9 to lift the underframe of the carriage 1. The underframe of the carriage 1 rotates around the pivot. At the same time, the tilting mechanism 11 controls the other side door to gradually open until the tilting cylinder 3 extends to its maximum stroke. At this point, the side door is fully open. After the goods are unloaded, the tilting cylinder 3 is vented through the electronically controlled valve 9, and then the carriage 1 gradually returns to its original position under its own weight. If the side door to be opened corresponding to the operation command is opened and the side door to be closed remains closed, the carriage 1 is determined to be normal, and compressed gas continues to be injected into the corresponding tilting cylinder 3 through the electronic control valve 9 until the tilting and unloading are completed.

[0052] Specifically, a function is set up to monitor the tilting angle of the carriage 1, such as the opening degree of both side doors within the range of (10-15)° and abnormal situations (the door on the unloading side is closed, and the door on the non-unloading side is open, i.e., the vehicle is impounded and both side doors are open). For example, when the tilt detection sensor at the bottom of the carriage 1 detects that the tilting angle of the carriage 1 is within the range of (10-15)°, the opening and closing status of the side doors on both sides of the carriage 1 is detected by, for example, the opening and closing detection switch at the door on both sides of the carriage 1. If it is detected that the side door that should be opened is not opened, and / or the side door that should be closed is opened, it is considered an abnormal situation. Based on the abnormal electrical signal transmission, a logical judgment is made, and the self-adjusting control is automatically reset. That is, at this time, the control component drives the electric control valve 9 to cut off the power, and the compressed air in the tilting cylinder 3 is discharged. The carriage 1 then falls back to reset (to facilitate maintenance, such as maintenance of the tilting mechanism 11). If the opening and closing of both side doors of the carriage 1 are normal during the tilting process, the carriage 1 continues to tilt to complete the unloading.

[0053] It should be added that self-tipping trucks can generally only unload cargo when parked; Therefore, as a door-suppression type railway pneumatic self-tipping car, even if there is a fault in the unloading side door not being opened or the non-unloading side door being open during the unloading process, the self-tipping car will avoid being stuck and the phenomenon of double-sided door opening by automatically detecting the opening of both sides of the side door (that is, the unloading side door is open and the non-unloading side door is closed under normal conditions). During the initial process of tipping and unloading, the opening and closing status of the doors on both sides of the car 1 can be detected. That is, the unloading side door is open and the non-unloading side door is closed before safe unloading can be carried out. It is suitable for unloading of cars such as train sets and can improve maintenance and unloading efficiency.

[0054] like Figure 4 As shown, in an optional embodiment of the present invention, the control component is further configured to: If the tilting angle of the carriage 1 reaches the preset tilting angle for pre-ventilation, the power to the electronic control valve 9 is cut off so that the compressed air in the tilting cylinder 3 is discharged through the electronic control valve 9, allowing the carriage 1 to continue to tilt and unload before resetting.

[0055] Specifically, considering the unique tilting and flow characteristics of various goods under different working conditions, the operator can set the tilting angle threshold of the pre-ventilated compartment 1, supporting the logic of "set once, use multiple times". Only the value needs to be preset once, and there is no need to reset it for the next operation. The operator can also modify the tilt angle value. The control panel, such as the PLC controller, will automatically execute the pre-ventilation function according to the modified tilt angle value. When the tilt angle sensor 14 detects that the real-time angle reaches or exceeds the tilt angle value corresponding to the pre-ventilation set by the operator (pre-ventilation preset tilt angle), the PLC controller drives the electric control valve 9 to cut off the power, and the compressed air in the tilting cylinder 3 is discharged through the electric control valve 9. After this process, the compartment 1 can continue to tilt under the action of the gravity of the goods until the goods are completely unloaded. After the goods are unloaded, the compartment 1 can automatically reset by its own weight. The tilting cylinder 3 of this invention is a single-acting cylinder, and the cylinder body of the tilting cylinder 3 adopts a single inlet and single outlet. When the electronic control valve 9 pre-vents the tilting cylinder 3, the piston rod of the tilting cylinder 3 extends upward under the overall weight of the cargo and the carriage 1. Then the carriage 1 unloads the cargo. When the ventilation reaches a certain level, the weight of the carriage 1 is greater than the air pressure inside the tilting cylinder 3, and the carriage 1 begins to reset and finally maintains a balanced state.

[0056] The operating instructions can include only the preset exhaust tilt angle. This means that after the carriage 1 is tilted at any angle, the electronically controlled valve 9 can be automatically closed without human intervention. This allows for exhaust through the electronically controlled valve 9, which can effectively reduce the impact force after the carriage 1 is tilted at its maximum angle and also reduce the reset time of the carriage 1, thereby improving the vehicle unloading efficiency.

[0057] Therefore, when the goods are highly viscous, a larger tilting angle is required, which in turn requires a larger pressure from the tilting cylinder 3. Pre-venting can reduce the maximum impact force of the bottom of the tilting cylinder 3 on the bottom beam 2 without affecting unloading.

[0058] As an optional embodiment of the present invention, the control component includes a PLC controller and / or an operating terminal. The PLC controller is used to acquire the tilting state data, and the operating terminal includes a terminal and a wireless transmitter. The terminal and the wireless transmitter are respectively connected to the PLC controller and are used to: acquire the manipulation command and transmit it to the PLC controller; the electrically controlled valve 9 is connected to the PLC controller.

[0059] In addition, considering operational flexibility and unforeseen circumstances, "manual intervention" is supported. During the entire unloading process (0-45° range), the "off" button on the tablet or wireless transmitter can be clicked at any time. The PLC controller will prioritize the execution of manual commands. If no manual command is received, the pre-ventilation function will be executed according to the tilt angle value set by the user.

[0060] To achieve the above control functions, such as Figure 2 and Figure 3 As shown, the present invention proposes an optional embodiment in which the control component includes a PLC controller and / or an operating terminal. The PLC controller is used to acquire the tilting state data, and the operating terminal includes a terminal and a wireless transmitter. The terminal and the wireless transmitter are respectively communicatively connected to the PLC controller and are used to: acquire the manipulation command and transmit it to the PLC controller; the electrically controlled valve 9 is connected to the PLC controller.

[0061] Specifically, the PLC controller is installed in the PLC control box 5, and the rechargeable battery 6 is installed in the battery box 7. The battery is connected to the PLC control box 5 through the connecting wire 8. The rechargeable battery 6 is a high-capacity rechargeable battery, and a charging interface is provided at the battery box 7. The rechargeable battery 6 can be quickly charged without being removed. By setting the operating terminal, the action of the electric control valve 9 can be controlled based on the PLC controller to realize the filling or discharge of compressed air into or out of the tilting cylinder 3.

[0062] Therefore, the operator uses a tablet and a wireless transmitter to transmit electrical signals to the PLC control box 5 via mobile network or electromagnetic waves to achieve precise control of the target vehicle. The same handheld control terminal can control the tilting action of any one of the multiple vehicles by inputting a specific number (such as the chassis number). (The fact that each train can be arbitrarily grouped with any vehicle means that when any vehicle is grouped into any train, the automatic unloading operation of that vehicle can be achieved.) Each train can be arbitrarily grouped with any vehicle. The chassis number serves as a unique identifier for the self-tipping vehicle. The same controller can achieve precise control of the target vehicle. In summary, operators can control the cargo compartment 1 to tilt and unload in either direction by either remote network (unlimited distance) or by using a handheld wireless transmitter within a certain range (e.g., 100m) from the work vehicle. At the same time, the pneumatic self-tipping vehicle is equipped with a manual operating valve 26, which can be temporarily activated when the automatic control fails.

[0063] In addition, the mobile and remote control terminals can provide status feedback on the functions and abnormal situations performed by the vehicle terminal. They support setting or modifying tilt angle values ​​on the interface and can view the preset tilt angle values ​​of the current vehicle. Thus, when unloading is automatically controlled, staff do not need to be near the vehicle to operate, which reduces the health hazards caused by dust raised during unloading and avoids the personal dangers caused by manual unloading. Considering special circumstances (when the tablet and wireless transmitter are operated at the same time), in order to ensure the safety of the operators using the wireless transmitter on site, the wireless transmitter is set to perform the operation, while the tablet does not perform the operation. That is, the response priority of the wireless transmitter is higher than that of the tablet.

[0064] like Figure 2 and Figure 3 As shown, as an optional embodiment of the present invention, the self-tipping vehicle with pneumatic control function further includes a tilt detection component. The tilt detection component includes limit switches and tilt sensors 14. The limit switches are respectively installed at the side door positions on both sides of each of the carriages 1. The tilt sensors 14 are installed at the bottom of the carriages 1. The limit switches are connected to the PLC controller and are used to: detect the opening degree of the side doors on both sides of the carriages 1 and transmit it to the PLC controller. The tilt sensors 14 are connected to the PLC controller and are used to: detect the tilt angle of the carriages 1 and transmit it to the PLC controller.

[0065] Specifically, the limit switches include a first limit switch 13 and a second limit switch 15 respectively installed on both sides of the carriage 1. The first limit switch 13 and the second limit switch 15 are used to detect the opening and closing status of the side doors. A set of limit switches is installed at the contact points between the end wall of the carriage 1 and the side doors on both sides. The tilt sensor 14 is installed at the middle position of the bottom of the outer wall of the carriage 1 to detect the tilt angle of the carriage 1, which is relative to the horizontal state.

[0066] Therefore, during the tipping and unloading process, the limit switch and the tilt angle sensor 14 at the bottom of the carriage 1 transmit the detected tilt angle and door opening / closing status to the PLC controller for processing. The operator can input control commands via a tablet and wireless transmitter. The control commands are used to tip or terminate the tipping, driving the electronic control valve 9 to allow air to enter the tipping cylinder 3 (tilting in advance) or to exhaust air (terminating the tipping). The piston rod of the tipping cylinder 3 rises or falls, completing the pneumatic self-tipping unloading and reset functions with pneumatic control. Alternatively, the electronic control valve 9 can be de-energized to discharge the compressed air in the tipping cylinder 3, and the carriage 1 will then fall back down. If the opening and closing of both side doors of carriage 1 are normal during the tipping process, carriage 1 will continue to tip to complete the unloading. As mentioned above, in the initial stage of tipping (defined by tilt sensor 14), the normality of the door operation is verified in real time (i.e., the unloading side door should be open and the non-unloading side door should be closed). Once an abnormal state such as "carriage stuck" (unloading side door not open) or "double-sided door open" (non-unloading side door opened by mistake) is detected, the operator can operate based on the control terminal or according to the preset settings to immediately interrupt the tipping and execute automatic reset, which effectively prevents serious traffic accidents and equipment damage caused by mechanical failure and greatly improves the safety of operation.

[0067] The above description is merely a specific embodiment of the present invention, enabling those skilled in the art to understand or implement the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features of the invention herein.

[0068] While the present invention has been disclosed above, its scope of protection is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and all such changes and modifications will fall within the scope of protection of the present invention.

Claims

1. A self-tipping vehicle with pneumatic control function, characterized in that, The system includes a carriage (1), a bottom beam (2), a tilting cylinder (3), a ventilation control pipeline, and a control assembly. The carriage (1) and the bottom beam (2) are detachably hinged. The two ends of the tilting cylinder (3) are respectively hinged to the carriage (1) and the bottom beam (2) and are used to drive the carriage (1) to tilt to both sides. The ventilation control pipeline includes an electric control valve (9), which is respectively connected to the tilting cylinder (3) and communicates with the control assembly. The control assembly is used for: Obtain the operation command and the tilting state data of the carriage (1), and control the operation of the electronic control valve (9) according to the operation command and the tilting state data to fill the tilting cylinder (3) with compressed gas, thereby causing the tilting cylinder (3) to drive the carriage (1) to tilt and unload, or to discharge the compressed gas from the tilting cylinder (3), thereby causing the carriage (1) to tilt and unload and reset or reset in advance.

2. The self-tipping vehicle with pneumatic control function according to claim 1, characterized in that, The air control pipeline also includes an air supply component, which is connected to the two tilting cylinders (3) via two electrically controlled valves (9). The air supply component is used to supply compressed gas to the corresponding tilting cylinder (3) through the corresponding electrically controlled valve (9).

3. The self-tipping vehicle with pneumatic control function according to claim 2, characterized in that, The air supply assembly includes a main shut-off valve (24), a main air supply pipe (25), and a first air inlet pipe (29). The main air supply pipe (25) is used to supply compressed gas, and the first air inlet pipe (29) is used to connect the main air supply pipe (25) and the electrically controlled valve (9). The main shut-off valve (24) is installed on the first air inlet pipe (29).

4. The self-tipping vehicle with pneumatic control function according to claim 3, characterized in that, The first air inlet of each of the solenoid valves (9) is connected to the main air supply pipe (25) through the first air inlet pipe (29), the first air outlet of each of the solenoid valves (9) is connected to the tilting cylinder (3), and the second air outlet of the solenoid valve (9) is used to discharge compressed gas.

5. The self-tipping vehicle with pneumatic control function according to claim 4, characterized in that, The air supply assembly also includes an auxiliary air storage cylinder (28). The third air inlet of the auxiliary air storage cylinder (28) is connected to the end of the first air inlet pipe (29) away from the main air supply pipe (25) via a one-way valve. The one-way valve is used to prevent compressed gas from flowing from the auxiliary air storage cylinder (28) to the first air inlet pipe (29). The third air outlet of the auxiliary air storage cylinder (28) is used to connect to the second air inlet of at least one of the electrically controlled valves (9).

6. The self-tipping vehicle with pneumatic control function according to any one of claims 1-5, characterized in that, The overturning status data includes the overturning angle of the carriage (1) and the opening degree of the side doors on both sides. The control component is specifically used for: The operation command is obtained and the corresponding electronic control valve (9) is energized to inject compressed gas into the corresponding tilting cylinder (3) so that the carriage (1) begins to tilt. Obtain the overturning state data and make a judgment. When the overturning angle of the carriage (1) is within the set tilt angle range, determine the opening degree of the side doors on both sides. If the side door to be opened corresponding to the operation command is not opened and / or the side door to be closed is opened, the carriage (1) is determined to be abnormal, and the power to the electronic control valve (9) is cut off to discharge compressed air from the corresponding tilting cylinder (3) so that the carriage (1) is reset. If the side door to be opened corresponding to the operation command is opened and the side door to be closed remains closed, the carriage (1) is determined to be normal, and compressed gas is continued to be injected into the corresponding tilting cylinder (3) through the electronic control valve (9) until the tilting and unloading is completed.

7. The self-tipping vehicle with pneumatic control function according to claim 6, characterized in that, The control component is also used for: If the tilting angle of the carriage (1) reaches the preset tilting angle for pre-ventilation, the power is cut off to the electric control valve (9) so that the compressed air in the tilting cylinder (3) is discharged through the electric control valve (9), so that the carriage (1) continues to tilt and unloads the cargo before resetting.

8. The self-tipping vehicle with pneumatic control function according to claim 6, characterized in that, The control components include a PLC controller and / or an operating terminal. The PLC controller is used to acquire the tilting state data. The operating terminal includes a terminal and a wireless transmitter. The terminal and the wireless transmitter are respectively connected to the PLC controller and are used to: acquire the manipulation command and transmit it to the PLC controller; the electric control valve (9) is connected to the PLC controller.

9. The self-tipping vehicle with pneumatic control function according to claim 8, characterized in that, It also includes a tilt detection component, which includes a limit switch and a tilt sensor (14). The limit switch is installed at the side door position on both sides of each of the carriages (1). The tilt sensor (14) is installed at the bottom of the carriage (1). The limit switch is connected to the PLC controller and is used to: detect the opening degree of the side doors on both sides of the carriage (1) and transmit it to the PLC controller. The tilt sensor (14) is connected to the PLC controller and is used to: detect the tilt angle of the carriage (1) and transmit it to the PLC controller.

10. The self-tipping vehicle with pneumatic control function according to any one of claims 1-5, characterized in that, It also includes a tilting mechanism (11), and each of the carriages (1) is equipped with the tilting mechanism (11) on one side. When the carriage (1) tilts to one side, the tilting mechanism (11) on one side is configured to drive the side door on the same side to open so as to unload the cargo, and the tilting mechanism (11) on the other side is configured to inhibit the opening of the side door on the same side.

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