Automatic opening and closing tank cover for powder tank car and tank car

Abstract

The utility model discloses an automatic opening and closing tank cover for a powder tank car and the tank car, comprising a base used for connecting a tank body and rotatably provided with a cover body; the first driving part is in transmission connection with the cover body to drive the cover body to rotate relative to the base; the locking module comprises a locking part arranged on the cover body and a limiting part arranged on the base, and the locking part is in transmission connection with a second driving part for driving the action end of the locking part to move so as to be locked and unlocked with the limiting part; and the pressure sensor is arranged at the bottom of the cover body, is in communication connection with the first driving part, and feeds back that the first driving part stops running when the pressure value detected at any moment is higher than a preset pressure value. Through the arrangement of the first driving part and the second driving part, the locking and unlocking of the condensation module and the opening and closing process of the cover body are automatically executed, the opening and closing convenience is improved, meanwhile, the pressure sensor is arranged to stop the action of the cover body when the pressure is abnormal, and the potential safety hazard in the cover opening and closing process is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of powder transportation equipment, in particular to an automatic opening and closing tank cover for a powder tank truck and the tank truck. Background Art

[0002] A powder tanker is a vehicle with a tank-shaped body suitable for transporting powdered goods. It needs to be equipped with an opening structure for loading and unloading of goods, and a tank cover for sealed transportation. Currently, the tank covers used to seal the openings are mostly hinged structures, which require manual opening and closing. This is not only time-consuming and labor-intensive, but also has the risk of poor sealing effect due to operational differences. Remote driving makes it difficult to observe the operating environment of the tank cover position, and it is impossible to make an accurate assessment of the opening and closing of the cover, which poses a safety hazard of accidental opening and closing.

[0003] Therefore, how to improve the opening and closing convenience and safety of the tank cover on the tank truck is a technical problem that needs to be solved urgently by those skilled in the art. Utility Model Content

[0004] In view of this, the purpose of the present invention is to provide an automatic opening and closing tank cover for a powder tank truck to improve the convenience and safety of opening and closing the tank cover.

[0005] Another object of the present invention is to provide a tank truck comprising the above-mentioned tank cover.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] An automatic opening and closing tank cover for a powder tank truck, comprising:

[0008] A base, used for connecting to the tank body, with a cover body rotatably arranged on the base;

[0009] a first driving portion, drivingly connected to the cover body to drive the cover body to rotate relative to the base;

[0010] A locking module, comprising a locking portion provided on the cover and a limiting portion provided on the base, wherein the locking portion is in transmission connection with a second driving portion, the second driving portion being configured to drive the actuating end of the locking portion to move so as to lock and unlock with the limiting portion;

[0011] The pressure sensor is arranged at the bottom of the cover body, is in communication with the first driving unit, and when the pressure value detected at any time is higher than a preset pressure value, it feeds back to the first driving unit to stop running.

[0012] Preferably, in the above-mentioned automatic switch tank cover for powder tank trucks, a rotating shaft is fixedly provided at one end of the cover body, and both ends of the rotating shaft are rotatably passed through the base through a bearing seat; the first driving part includes a hydraulic motor and a hydraulic power unit, and the hydraulic motor is transmission-connected to the rotating shaft to drive the rotating shaft to rotate in a clockwise direction and a counterclockwise direction.

[0013] Preferably, in the above-mentioned automatic opening and closing tank cover for a powder tank truck, a first proximity sensor and a second proximity sensor are respectively provided on opposite sides of the rotating shaft, a sensing area is provided on the rotating shaft, and the first proximity sensor and the second proximity sensor are both communicatively connected to the hydraulic motor;

[0014] The hydraulic motor drives the rotating shaft to rotate, and when the first proximity sensor detects the sensing area, it feedbacks that the hydraulic motor stops driving, and the cover body is fully opened; when the second proximity sensor detects the sensing area, it feedbacks that the hydraulic motor stops driving, and the cover body is fully closed.

[0015] Preferably, in the above-mentioned automatic opening and closing tank cover for a powder tank truck, the locking portion is a grab hook, the grab hook is rotatably arranged on the cover body through a connecting shaft, and the limiting portion is a limiting block including a protruding structure;

[0016] The second driving part includes a driving motor and a push rod, and the push rod is connected to one side of the grab hook to drive the grab hook to rotate along the connecting shaft. The rotation path of the grab hook includes at least a locking position and an unlocking position. When the grab hook is in the locking position, its hook groove structure is engaged and locked with the protruding structure of the limiting part; when the grab hook is in the unlocking position, the grab hook is separated from the limiting block.

[0017] Preferably, in the above-mentioned automatic switch tank cover for the powder tank truck, the locking part is a locking rod passing through both sides of the cover body, and oblong holes for the movement of the locking rod are opened on both sides of the cover body, and a latch cooperating with the locking rod is provided on the base, and the second driving part drives the locking rod to move in the opening area of the oblong hole, and the moving path of the locking rod in the oblong hole at least passes through the position of being stuck in the latch and separated from the latch.

[0018] Preferably, in the above-mentioned automatic opening and closing tank cover for the powder tank truck, the first driving part includes a motor, the output end of the motor is fixedly connected to a driving gear, one end of the cover body is fixedly provided with a rotating shaft, and one end of the rotating shaft is fixedly provided with a driven gear, and the driving gear is meshed with the driven gear.

[0019] Preferably, in the above-mentioned automatic switch tank cover for the powder tank truck, the first driving part includes a pushing cylinder and the actuating end is fixedly connected to a rack, one end of the cover body is fixedly provided with a rotating shaft, and one end of the rotating shaft is fixedly provided with a follower gear meshing with the rack, and the actuating end of the pushing cylinder can perform pushing and retracting actions.

[0020] Preferably, in the above-mentioned automatic opening and closing tank cover for powder tank trucks, the bottom of the cover body is provided with an annular groove and padded with a sealing gasket, and the base is correspondingly provided with an annular protrusion to seal and clamp with the cover body.

[0021] Preferably, in the above-mentioned automatic opening and closing tank cover for a powder tank truck, the outer peripheral cover of the first driving part is provided with a dust cover, and the second driving part is entirely arranged in the cavity structure of the cover body.

[0022] A tank truck is provided with the automatic opening and closing tank cover for a powder tank truck according to any one of the above embodiments sealed at the tank opening.

[0023] It can be seen from the above technical solution that the automatic switch tank cover for the powder tank truck provided by the utility model, through the coordinated action of the first drive unit and the second drive unit, makes the locking and unlocking of the locking module and the rotation and opening and closing of the cover body relative to the base all without manual drive, so as to improve the convenience of the tank cover use process. At the same time, a pressure sensor is also provided at the bottom of the cover body to detect the pressure applied to the cover body. The pressure sensor only needs to set a preset pressure value and does not require real-time observation by personnel. When the detected pressure exceeds the preset pressure, it directly feeds back to the first drive unit to stop the action, thereby avoiding the risk of accidentally touching the switch button when there are people or goods on the cover body, thereby improving the safety of the tank cover use process. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0025] Figure 1 A schematic diagram of the open state of the automatic switch tank cover for a powder tank truck provided by an embodiment of the utility model;

[0026] Figure 2 A schematic diagram of a closed state of an automatic opening and closing tank cover for a powder tank truck provided by an embodiment of the utility model;

[0027] Figure 3 Schematic diagram of the rotation structure and driving structure of the cover;

[0028] Figure 4 for Figure 2 Schematic top view of

[0029] Figure 5 A schematic diagram of the locking module structure in which the locking rod and the locking latch cooperate;

[0030] Figure 6 This is a structural diagram of the first driving part driving the cover body through gear transmission;

[0031] Figure 7 This is a structural diagram of the first driving unit driving the cover body through the gear rack.

[0032] Among them, 10-base; 110-bearing seat; 20-cover; 210-rotating shaft; 220-driven gear; 230-following gear; 240-long hole trough; 30-first driving part; 310-hydraulic motor; 320-hydraulic power unit; 330-motor; 340-driving gear; 350-pushing cylinder; 360-rack; 40-locking module; 410-locking part; 4110-catch hook; 4120-connecting shaft; 4130-locking rod; 420-limiting part; 4210-limiting block; 4220-latch; 50-second driving part; 510-push rod; 60-pressure sensor; 710-first proximity sensor; 720-second proximity sensor; 80-dust cover. DETAILED DESCRIPTION

[0033] The core of the utility model is to disclose an automatic opening and closing tank cover for a powder tank truck, so as to improve the convenience and safety of opening and closing the tank cover.

[0034] Another object of the present invention is to provide a tank truck comprising the above-mentioned tank cover.

[0035] In order to help those skilled in the art better understand the present invention, the following describes embodiments of the present invention with reference to the accompanying drawings. Furthermore, the embodiments described below do not limit the scope of the invention as set forth in the claims. Furthermore, the entire contents of the embodiments described below are not necessarily required to serve as the solution of the invention as set forth in the claims.

[0036] like Figure 1-7 As shown, the automatic opening and closing tank cover for a powder tank truck provided by the embodiment of the present invention mainly includes a base 10, a cover body 20, a first drive unit 30, a locking module 40, and a pressure sensor 60. Specifically, the base 10 is used to connect to the tank body and is preferably made of a high-strength alloy material with sufficient rigidity and stability. The base 10 is connected by bolting or welding to ensure sealing and structural reliability.

[0037] The cover body 20 is rotatably arranged on the base 10 so that the opening of the base 10 can be opened and closed by rotation. Correspondingly, the cover body 20 is transmission-connected with a first drive unit 30. The first drive unit 30 can be any one of a hydraulic drive structure, an electric structure, and a pneumatic drive structure. It only needs to achieve stable power output to meet the rotation requirements of the cover body 20, and the convenience and intelligence of the cover body 20 movement process can be improved without manual operation.

[0038] The locking module 40 includes a locking portion 410 and a limiting portion 420, which are separately arranged. The locking portion 410 is arranged on the cover 20 and serves as an actuating end, while the limiting portion 420 is arranged on the base 10 as a fixed end to cooperate with the locking portion 410. The locking portion 410, serving as the actuating end, is drivingly connected to the second driving portion 50. During the driving process of the second driving portion 50, the locking portion 410 passes through at least a locked position and an unlocked position to respectively lock and unlock with the limiting portion 420. When the locking portion 410 and the limiting portion 420 are in the locked state, the cover 20 and the base 10 remain connected and cannot rotate relative to each other. Only when the locking portion 410 and the limiting portion 420 are in the unlocked state can the cover 20 be rotated and opened relative to the base 10.

[0039] Furthermore, the automatic opening and closing tank cover for powder tank trucks provided by the embodiment of the present invention also includes a pressure sensor 60 installed at the bottom of the cover 20, which can be a highly sensitive piezoelectric or piezoresistive sensor to monitor the pressure inside the tank in real time. The pressure sensor 60 is also connected to the first drive unit 30 in communication so that when the pressure sensor 60 detects that the pressure exceeds a preset pressure value, it immediately sends a signal to the first drive unit 30, causing the first drive unit 30 to stop operating regardless of its state. It should be noted that the states of the first drive unit 30 mainly include an open state and an operating state. The first drive unit 30 stops operating in the open state, that is, when the cover 20 needs to be opened, it detects an abnormal pressure condition on the cover 20, and avoids damage caused by opening the cover, and the cover 20 remains in the closed state; and the first drive unit 30 stops operating in the operating state, that is, during the opening process of the cover 20, if there is an unexpected situation causing the pressure of the cover 20 to be abnormal, it stops during operation, and the cover 20 remains in its current position, thereby avoiding danger to personnel and the like. It should be noted that the preset pressure value is set by the driver according to the actual working conditions, that is, the dangerous opening pressure determined by the specification requirements or experience, and the preset pressure value should not be too small, but needs to be ensured to be clearly detected by the pressure sensor 60 when a person is standing or there is a foreign object, and can feedback the first drive unit 30 to stop running.

[0040] In the above embodiment, the first drive unit 30 is preferably also communicatively connected to the second drive unit 50 for coordinated control. The second drive unit 50 has a higher priority than the first drive unit 30. That is, when the first drive unit 30 needs to drive the cover 20, the operating status of the second drive unit 50 is first determined. Only when the second drive unit 50 drives the locking unit 410 to the unlocked position can the first drive unit 30 rotate the cover 20. The pressure sensor 60 has the highest feedback priority. When the pressure sensor 60 returns a pressure exceeding the limit signal, the first drive unit 30 stops operating regardless of its status to avoid harm to personnel.

[0041] The automatic opening and closing tank cover for a powder tank truck provided by the embodiment of the present invention, through the coordinated action of the first drive part 30 and the second drive part 50, enables the locking and unlocking of the locking module 40, and the rotation and opening and closing of the cover body 20 relative to the base 10, all without manual drive, so as to improve the convenience of the tank cover use process. At the same time, a pressure sensor 60 is further provided at the bottom of the cover body 20 to detect the pressure applied to the cover body 20. The pressure sensor 60 only needs to set a preset pressure value and does not require real-time observation by personnel. When the detected pressure exceeds the preset pressure, it directly feeds back to the first drive part 30 to stop the action, thereby avoiding the risk of accidental touching of the switch button when there are people or goods on the cover body 20, and abnormal opening of the cover body 20, thereby improving the safety of the tank cover use process.

[0042] To further improve the efficiency and safety of the tank lid, an auxiliary manual opening and closing device can be added to the lid body 20 to handle emergencies in the event of a failure of the drive unit. In addition, the connection between the base 10 and the lid body 20 can be designed to be quickly disassembled, such as by assembling a bearing structure, to facilitate maintenance and replacement.

[0043] Furthermore, based on the above embodiment, a rotating shaft 210 is fixedly mounted on one end of the cover 20. The rotating shaft 210 can be made of high-strength steel and hardened to improve its wear resistance. The ends of the rotating shaft 210 are rotatably mounted on the base 10 via bearing blocks 110. Specifically, bearing blocks 110 are spaced apart on opposite sides of the base 10, and the ends of the rotating shaft 210 are respectively inserted into the inner ring of a bearing in one of the bearing blocks 110, enabling relative rotation. The bearing blocks 110 are sealed to prevent dust and moisture intrusion, extending the service life of the internal bearings.

[0044] Correspondingly, if Figure 2 and Figure 4As shown, the first drive unit 30 includes a hydraulic motor 310 and a hydraulic power unit 320. The hydraulic motor 310 has the advantages of low vibration and high transmission efficiency, and can generate low noise during operation. The hydraulic power unit 320 provides hydraulic power for the hydraulic motor 310. The hydraulic power unit 320 can also be equipped with temperature control and pressure protection functions to adapt to different working environments and prevent system overload. The transmission connection between the hydraulic motor 310 and the rotating shaft 210 uses an elastic coupling to absorb axial, radial, and angular deviations that may occur during the rotation of the rotating shaft 210, thereby reducing damage to the motor and rotating shaft 210. It should be noted that the above embodiment uses the hydraulic motor 310 and hydraulic power unit 320 as the first drive unit 30 to achieve efficient and smooth opening and closing of the tank lid. At the same time, the use of the elastic coupling further improves the reliability and durability of the system.

[0045] It should be noted that the driving of the rotating shaft 210 by the hydraulic motor 310 includes clockwise rotation and counterclockwise rotation to meet the opening and closing requirements of the cover body 20.

[0046] To further optimize the above technical solution, based on the above embodiment, a first proximity sensor 710 and a second proximity sensor 720 are respectively provided on opposite sides of the rotating shaft 210 to monitor and adjust the rotation state of the rotating shaft 210. It should be noted that both the first proximity sensor 710 and the second proximity sensor 720 use non-contact sensing technology to accurately detect the sensing area provided on the rotating shaft 210. The installation position and angle of the sensors are precisely calculated based on the rotation angle of the cover 20 during the opening and closing process to ensure timely feedback of signals during the opening and closing process of the cover 20. The sensing area on the rotating shaft 210 can be made of magnetic material so that it can be accurately detected after reaching the detection range of the first proximity sensor 710 or the second proximity sensor 720.

[0047] In the above structure, the hydraulic motor 310 can drive the rotating shaft 210 to rotate, thereby causing the cover 20 to change position. During the opening process of the cover 20, the sensing area on the rotating shaft 210 moves toward the first proximity sensor 710. When the first proximity sensor 710 detects the sensing area, it sends a signal to the hydraulic motor 310 to stop driving, at which point the cover 20 reaches the fully opened position. Similarly, during the closing process of the cover 20, when the second proximity sensor 720 detects the sensing area, it also sends a signal to stop driving, and the cover 20 reaches the fully closed position. The first proximity sensor 710 and the second proximity sensor 720 enable precise position control during the opening and closing processes of the cover 20, preventing damage to the equipment during opening or affecting the sealing performance during closing due to excessive rotation.

[0048] As for the locking module 40, it can adopt a hook locking or insert locking structure. In some embodiments of the present invention, such as Figure 2 and Figure 3 As shown, the locking module 40 is a hook-and-lock structure. Specifically, the locking portion 410 is a hook 4110 that is rotatably mounted on the cover 20 via a connecting shaft 4120. This allows for position switching by rotation along the shaft. The hook 4110 is constructed from high-strength alloy steel to ensure durability and reliability under frequent use. Correspondingly, the limiting portion 420 is a stopper 4210 comprising a raised structure that mates with the hook groove of the hook 4110. When the hook 4110 is rotated to the locked position, the hook groove engages with the raised structure, achieving a secure lock. When the hook 4110 is rotated to the unlocked position, the hook 4110 separates from the stopper 4210, allowing the cover 20 to be opened.

[0049] like Figure 3 As shown, the second drive unit 50 includes a drive motor and a push rod 510. The push rod 510 is connected to one side of the grab hook 4110 to drive the grab hook 4110 to rotate along the connecting shaft 4120, allowing it to pass through the locked position and the unlocked position. The above-mentioned coordinated operation of the grab hook 4110 and the limit block 4210 realizes a fast and reliable locking and unlocking mechanism. The precise control of the drive motor and push rod 510 further improves the safety and convenience of operation. At the same time, the hook-type connection has fewer moving parts, and the grab hook 4110 is driven only by the second drive unit 50, and its operation process has lower risks.

[0050] In other embodiments of the present invention, Figure 5 As shown, the locking module 40 is an insert-locking structure, which specifically includes a locking rod 4130 disposed on both sides of the cover 20. The cover 20 also has an oblong hole groove 240 structure on both sides for the locking rod 4130 to insert and slide and adjust. The design of the oblong hole takes into account the smooth movement of the locking rod 4130 and the guiding effect on the locking rod 4130. Correspondingly, the base 10 is provided with a latch 4220 structure that cooperates with the locking rod 4130. The movement path of the locking rod 4130 within the oblong hole passes through at least the position of being engaged with the latch 4220 and the position of being separated from the latch 4220, ensuring that the locking rod 4130 can accurately reach the desired position. On this basis, the second driving unit 50 only needs to drive the locking rod 4130 to move within the oblong hole groove 240 via a drive motor or other power device, and the locking and unlocking functions of the cover 20 and the base 10 can be achieved by changing the position of the locking rod 4130. The contact area of the locking rod 4130 and the locking latch 4220 during the cooperation process is larger, and the locking rod 4130 is a limiting structure on both sides, which has a stronger connection stability and can maintain the locking effect of the cover body 20 and the base 10.

[0051] It should be noted that there is a long friction stroke during the locking and unlocking process of the locking rod 4130 and the latch 4220, so a wear-resistant coating or self-lubricating material can be added to the contact surface of the locking rod 4130 and the latch 4220 to increase their service life.

[0052] Regarding the specific structure of the first driving unit 30, in some embodiments of the present invention, such as Figure 6 As shown, the first drive unit 30 is a structure driven by a motor 330 in conjunction with a gear train to provide strong driving stability. Specifically, the output end of the motor 330 is fixedly connected to a driving gear 340 to drive the driving gear 340 to rotate when the motor 330 is started. Correspondingly, a rotating shaft 210 is fixedly provided at one end of the cover body 20, and a driven gear 220 is fixedly provided at one end of the rotating shaft 210 to mesh with the driving gear 340 to achieve rotational movement of the rotating shaft 210 and the cover body 20. It should be noted that the design of the gear transmission system takes into account transmission efficiency and load-bearing capacity, and helical gears or spur gears are generally used to reduce noise and improve transmission stability.

[0053] At the same time, the driven gear 220 can be fixedly connected to the rotating shaft 210 by providing a keyway structure, so that it can be disassembled and the driven gear 220 can be replaced, thereby achieving different transmission ratios to meet different opening requirements of the cover body 20.

[0054] In other embodiments of the present invention, Figure 7 As shown, the first drive unit 30 is configured as a push cylinder 350 with a relatively simple motion process. A rack 360 is fixedly mounted on the actuating end of the push cylinder 350, driving the rack 360 to reciprocate in a single direction. Correspondingly, a follower gear 230 is fixedly mounted on one end of the rotating shaft 210 provided on the cover 20, meshing with the rack 360. This structure allows the linear motion of the push cylinder 350 to be converted into rotational motion of the rotating shaft 210 through the meshing of the rack 360 and the follower gear 230, thereby driving the opening and closing of the cover 20.

[0055] It should be noted that to improve the safety and reliability of the system, a safety clutch can be added between the push cylinder 350 and the rack 360 to prevent damage to the system due to overload or jamming. Furthermore, the follower gear 230 can be designed to be removable and replaceable to accommodate shafts 210 of varying specifications or to allow for fine-tuning to optimize meshing.

[0056] Furthermore, in the automatic opening and closing tank cover for powder tank trucks provided in an embodiment of the present invention, the bottom of the cover body 20 is specially designed with an annular groove, and the inner pad of the annular groove is provided with a sealing gasket to provide a better sealing effect during connection. The base 10 is correspondingly provided with an annular protrusion to match the annular groove at the bottom of the cover body 20. The combination of the annular groove and the annular protrusion can provide a two-layer sealing structure on both sides of the annular protrusion in the thickness direction. Combined with the sealing gasket, it improves the sealing effect between the cover body 20 and the base 10, effectively preventing material leakage and the intrusion of external contaminants.

[0057] Furthermore, in a specific embodiment of the present invention, the outer periphery of the first drive unit 30 is also covered with a dust cover 80. The dust cover 80 is made of durable plastic or metal and can be designed with appropriate ventilation holes to ensure heat dissipation and prevent dust and other impurities from entering the drive unit. The second drive unit 50 is entirely disposed within the cavity structure of the cover body 20. The cavity structure adopts a sealed design to prevent the intrusion of dust and moisture, protecting the internal components such as the motor and push rod 510, thereby improving the applicability of the tank cover in harsh environments, extending the service life of the drive unit, and reducing maintenance costs.

[0058] The present invention also provides a tank truck having an automatic opening and closing tank cover for a powder tank truck provided in any of the aforementioned embodiments sealed at the tank opening. The tank opening is also provided with a mounting interface compatible with the automatic opening and closing tank cover for a powder tank truck, ensuring accurate installation and sealing of the tank cover. The mounting interface can be bolted, welded, or otherwise securely fastened. The first drive unit 30, the second drive unit 50, and the pressure sensor 60 can be connected to the vehicle's computer system, allowing the operator to open and close the cover 20 by operating the corresponding keys in the cab.

[0059] In the following, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the quantity of the technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include one or more of the features.

[0060] The above description is merely an illustration of preferred embodiments of the present invention and the technical principles employed, and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. The scope of the present invention is not limited to technical solutions formed by a specific combination of the aforementioned technical features. It also encompasses other technical solutions formed by any combination of the aforementioned technical features or their equivalents, without departing from the scope of the present invention. For example, a technical solution formed by replacing the aforementioned features with (but not limited to) technical features having similar functions disclosed in this invention.

Claims

1. An automatic opening and closing tank cover for a powder tank truck, characterized in that: include: A base, used for connecting to the tank body, with a cover body rotatably arranged on the base; a first driving portion, drivingly connected to the cover body to drive the cover body to rotate relative to the base; A locking module, comprising a locking portion provided on the cover and a limiting portion provided on the base, wherein the locking portion is in transmission connection with a second driving portion, the second driving portion being configured to drive the actuating end of the locking portion to move so as to lock and unlock with the limiting portion; The pressure sensor is arranged at the bottom of the cover body, is in communication with the first driving unit, and when the pressure value detected at any time is higher than a preset pressure value, it feeds back to the first driving unit to stop running.

2. The automatic opening and closing tank cover for a powder tank truck according to claim 1, characterized in that: A rotating shaft is fixedly provided at one end of the cover body, and both ends of the rotating shaft are rotatably passed through the base through a bearing seat; the first driving part includes a hydraulic motor and a hydraulic power unit, and the hydraulic motor is transmission-connected to the rotating shaft to drive the rotating shaft to rotate in a clockwise direction and a counterclockwise direction.

3. The automatic opening and closing tank cover for a powder tank truck according to claim 2, characterized in that: A first proximity sensor and a second proximity sensor are respectively provided on opposite sides of the rotating shaft, a sensing area is provided on the rotating shaft, and the first proximity sensor and the second proximity sensor are both communicatively connected to the hydraulic motor; The hydraulic motor drives the rotating shaft to rotate, and when the first proximity sensor detects the sensing area, it feedbacks that the hydraulic motor stops driving, and the cover body is fully opened; when the second proximity sensor detects the sensing area, it feedbacks that the hydraulic motor stops driving, and the cover body is fully closed.

4. The automatic opening and closing tank cover for a powder tank truck according to claim 1, characterized in that: The locking portion is a hook, which is rotatably arranged on the cover body through a connecting shaft, and the limiting portion is a limiting block including a protruding structure; The second driving part includes a driving motor and a push rod, the driving motor is used to drive the free end of the push rod to extend and retract, the free end is connected to one side of the grab hook to drive the grab hook to rotate along the connecting shaft, and the rotation path of the grab hook includes at least a locking position and an unlocking position. When the grab hook is in the locking position, its hook groove structure is locked with the protruding structure of the limiting part; when the grab hook is in the unlocking position, the grab hook is separated from the limiting block.

5. The automatic opening and closing tank cover for a powder tank truck according to claim 1, characterized in that: The locking part is a locking rod passing through both sides of the cover body, and an oblong hole groove is opened on both sides of the cover body for the locking rod to move. A lock latch that cooperates with the locking rod is provided on the base, and the second driving part drives the locking rod to move in the opening area of the oblong hole groove, and the moving path of the locking rod in the oblong hole groove at least passes through the position of being stuck in the lock latch and separated from the lock latch.

6. The automatic opening and closing tank cover for a powder tank truck according to claim 1, characterized in that: The first driving part includes a motor, an output end of the motor is fixedly connected to a driving gear, one end of the cover is fixedly provided with a rotating shaft, and one end of the rotating shaft is fixedly provided with a driven gear, and the driving gear is meshed with the driven gear.

7. The automatic opening and closing tank cover for a powder tank truck according to claim 1, characterized in that: The first driving part includes a pushing cylinder and an actuating end is fixedly connected to a rack. One end of the cover body is fixedly provided with a rotating shaft, and one end of the rotating shaft is fixedly provided with a follower gear meshing with the rack. The actuating end of the pushing cylinder can perform pushing and retracting actions.

8. The automatic opening and closing tank cover for a powder tank truck according to claim 1, characterized in that: The bottom of the cover body is provided with an annular groove and a sealing gasket, and the base is correspondingly provided with an annular protrusion to seal and clamp with the cover body.

9. The automatic opening and closing tank cover for a powder tank truck according to claim 1, characterized in that: The outer peripheral cover of the first driving part is provided with a dust cover, and the second driving part is entirely arranged in the cavity structure of the cover body.

10. A tank truck, characterized in that: The automatic opening and closing tank cover for a powder tank truck according to any one of claims 1 to 9 is sealed and arranged at the opening of the tank body.

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