Pump box with digital display metering and marking functions and tank type refueling truck

Abstract

The invention relates to a pump box with digital display metering and marking functions, and relates to the technical field of vehicle-mounted equipment, the pump box comprises a box body, a conveying pipeline is installed in the box body, one end of the conveying pipeline is connected to a vehicle-mounted oil tank, the other end of the conveying pipeline is provided with a butt joint, the conveying pipeline is provided with an output pump, and the conveying pipeline is provided with a flow meter; a marking device is installed in the box body and comprises a marking machine, a processor and a feeding mechanism, the marking machine is installed in the pump box, the processor is installed in the box body, the processor is electrically connected with the marking machine and the flow meter, the feeding mechanism is installed in a working area of the marking machine, and the feeding mechanism supplements iron sheets to the working area of the marking machine. The oil in the oil tank can be distinguished conveniently.

Description

Technical Field

[0001] This application relates to the field of vehicle-mounted equipment, and in particular to a pump box and tank-type refueling truck with digital display metering and marking functions. Background Technology

[0002] Tanker trucks, also known as mobile refueling trucks, computer-controlled tax-operated refueling trucks, oil tankers, oil loading trucks, oil transport trucks, oil hauling trucks, petroleum transport trucks, and edible oil transport trucks, are mainly used for the transportation and storage of petroleum derivatives (gasoline, diesel, crude oil, lubricating oil, and coal tar, etc.). Depending on the specific purpose and operating environment, they offer various refueling or oil transport functions, including oil suction, oil pumping, and the separate loading and discharging of different oil types.

[0003] All existing tanker refueling trucks are equipped with pump boxes, which are the power components for transporting petroleum on the truck. The pump box transports the petroleum from the truck's tank to the tanks at various gas stations. After the petroleum is transported from the truck's tank to the gas station's tank, staff will label the tanks at the gas station according to the type and quantity of petroleum for classification. The existing labels are usually handwritten. When the outdoor tanks are exposed to rain, the ink on the labels can easily spread, making the text unclear and difficult to distinguish during use. Summary of the Invention

[0004] To facilitate the identification of oil products in oil tanks, this application provides a pump box with digital display metering and marking functions.

[0005] The pump box with digital display metering and marking functions provided in this application adopts the following technical solution: A pump box with digital display metering and marking functions includes a housing, a conveying pipe installed inside the housing, one end of the conveying pipe connected to an oil tank on a vehicle, and a connector installed at the other end. An output pump and a flow meter are installed on the conveying pipe. A marking device is installed inside the housing, including a marking machine, a processor, and a feeding mechanism. The marking machine and the processor are installed inside the housing and are electrically connected to the marking machine and the flow meter. The feeding mechanism is installed in the working area of ​​the marking machine and replenishes the iron sheets in the working area of ​​the marking machine.

[0006] By adopting the above technical solution, the feeding mechanism replenishes the iron sheet for the marking machine. The marking machine marks the flow rate value fed back by the flow meter and the type of oil on the iron sheet. Subsequently, by attaching the marked iron sheet to the oil tank at the gas station, it is convenient to know the type of oil and the internal capacity of the oil tank. The marking on the iron sheet is not easily damaged in rainy or snowy weather, and it is convenient to distinguish the type of oil in the oil tank.

[0007] Optionally, the feeding mechanism includes a positioning frame and a placement box. The positioning frame is installed in the working area of ​​the marking machine, and the placement box is installed on the positioning frame. The placement box is set in the working area of ​​the marking machine through the gap of the positioning frame. The top of the placement box has a placement opening, and the bottom side of the placement box has a discharge port.

[0008] Optionally, the positioning frame includes a mounting rod and a positioning frame. The mounting rod is fixed on the marking machine, and the positioning frame is fixed on the end of the mounting rod away from the marking machine. The mounting rod is a telescopic rod.

[0009] Optionally, the placement box is hinged to a cover plate, which opens or closes the placement opening by rotation.

[0010] Optionally, a clamping mechanism is installed on the mating head. The clamping mechanism includes a rotating plate and a clamping plate. The rotating plate is rotatably mounted on the mating head, and the clamping plate is fixed on the rotating plate perpendicular to the rotating plate. When the rotating plate rotates to abut against the side wall of the mating head, the clamping plate abuts against the pipe that is mated with the mating head, pressing the pipe that is mated with the mating head onto the mating head.

[0011] Optionally, the clamping plate includes a fixing part and an abutting part. The fixing part is fixed to the rotating plate, and the abutting part is slidably disposed on the fixing part. An elastic member is disposed between the abutting part and the fixing part, and the elastic member drives the abutting part to slide away from the fixing part.

[0012] Optionally, a push switch is embedded in the side wall of the connector. When the rotating plate rotates and abuts against the side wall of the connector, the push switch is triggered. The push switch is electrically connected to both the output pump and the marking machine.

[0013] Optionally, several sets of clamping mechanisms are evenly arranged around the connector, and several clamping mechanisms are arranged corresponding to the pressing switch.

[0014] A tanker refueling truck includes a vehicle body on which a pump box is mounted.

[0015] Optionally, an input check valve is installed on the tributary pipe.

[0016] In summary, this application includes at least one of the following beneficial technical effects: 1. The feeding mechanism replenishes the iron sheet for the marking machine. The marking machine marks the flow rate value fed back by the flow meter and the type of oil on the iron sheet. Subsequently, the marked iron sheet is attached to the oil tank at the gas station to make it easy to know the type of oil and the internal capacity of the oil tank. The marking on the iron sheet is not easily damaged in rainy or snowy weather and makes it easy to identify the type of oil in the oil tank. 2. Stack the iron sheets into the placement box through the placement port. Under the action of gravity, the bottom iron sheet adheres to the positioning frame. After being positioned by the positioning frame, use a marking machine to laser mark the iron sheet. After the laser marking is completed, take out the laser-marked iron sheet through the discharge port and attach it to the oil tank of the gas station. The positioning frame is fixed on the sliding part. The position of the positioning frame is adjusted by sliding the sliding part, thereby adjusting the position of the iron sheet according to the focus of the marking machine, so that the marking machine produces clearer and more accurate marks. 3. The clamping mechanism reinforces the pipe to be connected to the connector on the connector head, reducing the probability of the pipe detaching from the connector. The abutment part can be adjusted according to the thickness of the flange of the pipe to be connected to the connector, thereby improving the applicability of the clamping mechanism. 4. By setting the push-button switch, the output pump can only be started after the connector and the connected pipe are fixed, reducing the probability of oil leakage caused by the output pump working after the connector is not fully connected or is disconnected. At the same time, the marking machine marks after the output pump has finished working, which can more accurately mark the data obtained by the flow meter, and also reduces the probability that the staff will forget to mark and reset the flow meter directly, resulting in the inability to mark the oil volume correctly later. 5. The branch pipeline can easily deliver oil into the vehicle's oil tank. The oil is input and output by the input pump and output pump respectively. There is no need to adjust the power direction by changing the rotation of the input pump or output pump, which reduces the working error caused by misoperation leading to incorrect power direction. 6. By removing the connecting hose from the fixed plug, the connecting hose can be connected to the connector of the delivery pipeline or the connector of the branch pipeline. This allows for extending the docking distance when it is inconvenient for the vehicle to be parked at the docking equipment. When using the connecting hose, it is necessary to first connect and fix the connecting hose to the equipment to be docked with the vehicle before connecting the connecting hose to the connector of the delivery pipeline or the connector of the branch pipeline. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application.

[0018] Figure 2 This is a cross-sectional view of the marking device according to an embodiment of this application.

[0019] Figure 3 yes Figure 2 A magnified view of section A in the middle.

[0020] Figure 4 This is a schematic diagram of the overall structure of an embodiment of this application from another perspective.

[0021] Figure 5 yes Figure 4 A magnified view of section B in the middle.

[0022] Figure 6 This is a circuit diagram of the output pump and marking machine according to an embodiment of this application.

[0023] Figure 7 This is a schematic diagram of the overall structure of the vehicle body in this application.

[0024] In the diagram, 1. Box body; 2. Box door; 3. Conveying pipe; 4. Connector; 5. Output pump; 6. Flow meter; 7. Marking device; 71. Marking machine; 72. Processor; 73. Feeding mechanism; 731. Positioning frame; 7311. Mounting rod; 7312. Positioning frame; 732. Placement box; 8. Placement port; 9. Discharge port; 10. Cover plate; 11. Pressing spring; 12. Pressure plate; 13. Push spring; 14. Push plate; 15. Chamfer; 16. Clamping mechanism; 161. Rotating plate; 162. Clamping plate; 1621. Fixing part; 1622. Abutment part; 17. Elastic element; 18. Press switch; 19. Branch pipe; 20. Input pump; 21. Input check valve; 22. Jog reset switch; 23. Rotating disc; 24. Connecting hose; 25. Fixed plug; 26. Vehicle body. Detailed Implementation

[0025] The following is in conjunction with the appendix Figures 1-7 The present application will be further described with reference to specific embodiments: First, it should be noted that in the description of this application, the use of directional terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" indicates the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are used solely for descriptive purposes and do not indicate or imply that the device or component 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 this application. Furthermore, the use of numerical quantifiers such as "first," "second," and "third" is for descriptive purposes only and should not be construed as indicating or implying relative importance. Additionally, in this application, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, interference fits, transition fits, or integral connections; they can refer to direct connections or indirect connections through an intermediate medium. Therefore, those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0026] This application discloses a pump box with a metering device and a marking device 7, referring to... Figure 1The system includes a housing 1, which is a hollow structure with an opening on one side. A door 2 is hinged to the opening, allowing the housing 1 to be opened or closed by rotating the door 2. The door 2 is locked to the housing 1 and can rotate on the housing 1 after unlocking. The housing 1 is fixedly installed near the rear of the tanker refueling truck. A conveying pipe 3 is installed inside the housing 1. One end of the conveying pipe 3 is connected to the oil tank on the truck, and the other end is equipped with a connector 4, which connects to the oil tank at the gas station. An output pump 5, a commonly used power pump in oil transportation, is installed on the conveying pipe 3 to extract oil from the oil tank on the vehicle. A flow meter 6 is installed on the conveying pipe 3 to calculate the amount of oil extracted from the conveying pipe 3. A marking device 7 is installed inside the housing 1. The marking device 7 includes a marking machine 71, a processor 72, and a feeding mechanism 73. The marking machine 71 is installed... The marking machine 71 in this embodiment is a conventional laser marking machine 71, housed in housing 1. The processor 72 is installed inside housing 1 and is electrically connected to the marking machine 71 and the flow meter 6. The processor 72 receives the flow rate statistics from the flow meter 6 and feeds it back to the marking machine 71 via an electrical signal. The marking machine 71 then marks the flow rate according to the flow rate of the flow meter 6. The feeding mechanism 73 is installed in the working area of ​​the marking machine 71 and replenishes the iron sheets in the working area of ​​the marking machine 71. The marking machine 71 marks the flow rate value fed back by the flow meter 6 and the type of oil on the iron sheets. Subsequently, by attaching the marking iron sheets marked by the marking machine 71 to the oil tanks at the gas station, it is convenient to understand the type of oil and the internal capacity of the oil tanks. The marking on the iron sheets by the marking machine 71 is not easily damaged in rainy or snowy weather and facilitates the identification of the type of oil in the oil tanks.

[0027] Reference Figure 1 , Figure 2 and Figure 3The feeding mechanism 73 includes a positioning frame 731 and a placement box 732. The positioning frame 731 is installed in the working area of ​​the marking machine 71, and the placement box 732 is installed on the positioning frame 731. The placement box 732 is positioned in the working area of ​​the marking machine 71 through the gap of the positioning frame 731. The top of the placement box 732 has a placement opening 8, and the bottom side of the placement box 732 has a discharge opening 9. Iron sheets are stacked and placed in the placement box 732 through the placement opening 8. Under the action of gravity, the bottom iron sheet adheres to the surface. The positioning frame 731 is used to position the iron sheet. After positioning, a marking machine 71 laser-marks the iron sheet. Once laser marking is complete, the marked iron sheet is removed through the discharge port 9 and affixed to the oil tank at the gas station. The positioning frame 731 includes a mounting rod 7311 and a positioning frame 7312. The mounting rod 7311 is fixed to the marking machine 71, and the positioning frame 7312 is fixed to the end of the mounting rod 7311 facing away from the marking machine 71. The positioning frame 7312 is a rectangular frame. 2. The middle section is hollowed out so that the marking machine 71 can mark the iron sheet through the hollowed-out area. The mounting rod 7311 is a telescopic rod, including a fixed part 1621 fixed to the marking machine 71 and a sliding part slidably inserted into the fixed part 1621. Both the fixed part 1621 and the sliding part are on a rectangular rod body. In this embodiment, four mounting rods 7311 are provided and fixed around the positioning frame 7312. The two diagonally opposite mounting rods 7311 are threaded with fixing bolts. The fixing bolts are threaded together. Near the sliding part, a fixing bolt passes through the fixing part 1621 and abuts against the side wall of the sliding part. By tightening the fixing bolt, the sliding part is fixed to the fixing part 1621. By loosening the fixing bolt, the sliding part can slide on the fixing part 1621. The positioning frame 7312 is fixed on the sliding part. The position of the positioning frame 7312 is adjusted by the sliding of the sliding part, thereby adjusting the position of the iron sheet according to the focus of the marking machine 71, so that the marking machine 71 can make the marking more clear and accurate.A cover plate 10 is hinged to the placement box 732. The cover plate 10 opens or closes the placement opening 8 by rotating it. Opening the placement opening 8 by rotating the cover plate 10 allows for the replenishment of iron sheets inside the placement box 732. Closing the placement opening 8 by rotating the cover plate 10 reduces the probability of iron sheets falling out of the placement box 732. A pressure spring 11 is installed on the cover plate 10, and a pressure plate 12 is fixed to the pressure spring 11. When the cover plate 10 is rotated to close the placement opening 8, the elastic force of the pressure spring 11 drives the pressure plate 12 to slide away from the cover plate 10, pressing the iron sheets inside the placement box 732 onto the positioning frame 7312. The cooperation between the pressure plate 12 and the pressure spring 11 facilitates the unloading of subsequent iron sheets after the bottom iron sheet is removed. The placement box 732 is located away from the discharge port 9. A push spring 13 is installed at one end, and a push plate 14 is fixed on the push spring 13. The push plate 14 slightly pushes the bottom iron piece of the placement box 732 out of the discharge port 9. In this embodiment, the push plate 14 pushes the iron piece out of the discharge port 9 by one centimeter so as to grasp the iron piece and remove it from the placement box 732. The push plate 14 has a chamfer 15 at the end facing the placement port 8. The elastic force of the push spring 13 is less than the elastic force of the lower spring. When the bottom iron piece is removed, the pressure spring 11 pushes the pressure plate 12 to drive the subsequent iron piece to abut against the chamfer 15. The abutment of the iron piece drives the push plate 14 to slide away from the discharge port 9 until the iron piece abuts against the positioning frame 7312. Under the action of the elastic force of the push spring 13, the push plate 14 slightly pushes the iron piece abutting against the positioning frame 7312 out of the discharge port 9.

[0028] Reference Figure 4 and Figure 5 Several sets of clamping mechanisms 16 are installed on the connector 4, and these clamping mechanisms 16 are evenly distributed around the connector 4. In this embodiment, two sets of clamping mechanisms 16 are arranged around the connector 4. Each clamping mechanism 16 includes a rotating plate 161 and a clamping plate 162. The rotating plate 161 is rotatably mounted on the connector 4, and the clamping plate 162 is fixed to the rotating plate 161 perpendicularly. When the rotating plate 161 rotates to abut against the side wall of the connector 4, the clamping plate 162 abuts against the pipe that is connected to the connector 4, pressing the pipe connected to the connector 4 onto the connector 4. The clamping mechanism 16 reinforces the pipe connected to the connector 4 onto the connector 4, reducing the contact area with the connector. The probability of the pipe detaching from the connector 4; the clamping plate 162 includes a fixing part 1621 and an abutting part 1622. The fixing part 1621 and the abutting part 1622 are uniform plates. The fixing part 1621 is fixed on the rotating plate 161 perpendicular to the rotating plate 161. The abutting part 1622 is slidably disposed on the fixing part 1621. An elastic element 17 is provided between the abutting part 1622 and the fixing part 1621. The elastic element 17 is a spring. The elastic element 17 drives the abutting part 1622 to slide away from the fixing part 1621. The setting of the abutting part 1622 can be adjusted according to the thickness of the pipe flange that is connected to the connector 4, thereby improving the applicability of the clamping mechanism 16.

[0029] Reference Figure 4 , Figure 5 and Figure 6 A push switch 18 is embedded in the side wall of the connector 4. Several push switches 18 are provided corresponding to the clamping mechanism 16. In this embodiment, two push switches 18 are provided. When the rotating plate 161 rotates and abuts against the side wall of the connector 4, the push switch 18 is triggered. The push switch 18 is electrically connected to the output pump 5 and the marking machine 71. When all push switches 18 are triggered by the rotating plate 161, the connector 4 is fixed to the oil tank of the gas station, and the circuit of the output pump 5 is connected. At this time, the output pump 5 is started by the start button. After the output pump 5 is started, it transports oil to the oil tank of the gas station. After the oil is transported, the pipe at the connector 4 is disassembled, and the push switch 18 is released. After the push switch 18 is released, the circuit of the marking machine 71 is connected. The marking machine 71 laser marks the oil and the flow value measured by the flow meter 6 on the iron sheet, and then takes the iron sheet out of the placement box 732 and affixes it to the oil tank of the gas station. A jog reset switch 22 is installed on the circuit of 71. When the press switch 18 is triggered, the jog reset switch 22 closes. When the press switch 18 is released, the circuit of the marking machine 71 is connected for marking, and the jog reset switch 22 is disconnected after marking. This realizes that each triggering and disconnection of the press switch 18 triggers one marking operation of the marking machine 71. By setting the press switch 18, the output pump 5 can only be started after the connector 4 is fixed to the connected pipe, thus realizing a protection measure for the connection of the output pump 5 circuit, reducing the probability of the operator accidentally starting the output pump 5 directly, and also reducing the probability of oil leakage caused by the output pump 5 working after the connector 4 is not fully connected or is disconnected. At the same time, the marking machine 71 performs marking after the output pump 5 has finished working, which can more accurately mark the data obtained by the flow meter 6, and also reduces the probability that the operator forgets to mark and directly resets the flow meter 6, resulting in the inability to mark the oil volume normally later.

[0030] Reference Figure 1A branch pipe 19 is connected to and communicates with the main pipeline 3. An input pump 20 is installed on the branch pipe 19. The branch pipe 19 facilitates the delivery of oil into the vehicle's oil tank. The input and output of oil are handled by the input pump 20 and the output pump 5 respectively, eliminating the need to adjust the power direction by changing the rotation of the input pump 20 or the output pump 5, thus reducing operational errors caused by misoperation leading to incorrect power direction. An input check valve 21 is installed on the branch pipe 19, which limits the probability of oil flowing out of the branch pipe 19. To reduce the probability of oil leakage from the branch pipe 19 during output, a connector 4 is also installed on the branch pipe 19. At the same time, two sets of clamping mechanisms 16 and two corresponding push switches 18 are also installed on the connector 4. The push switches 18 on the branch pipe 19 are only electrically connected to the input pump 20 and not to the marking machine 71. When the push switches 18 on the branch pipe 19 are triggered, the circuit of the input pump 20 is connected, and the input pump 20 is started to input oil into the oil tank on the vehicle. When the push switches 18 on the branch pipe 19 are released, the marking machine 71 will not be triggered.

[0031] Reference Figure 1 A rotating disk 23 is rotatably installed inside the housing 1, and a connecting hose 24 is wound around the rotating disk 23. Two fixed plugs 25 are provided inside the housing 1. The two ends of the connecting hose 24 along its length are respectively inserted into the fixed plugs 25 for fixation. By removing the connecting hose 24 from the fixed plugs 25, the connecting hose 24 can be connected to the connector 4 of the conveying pipe 3 or the connector 4 of the branch pipe 19. This allows the connection distance to be extended when it is inconvenient for the vehicle to be parked at the docking equipment. When using the connecting hose 24, it is necessary to first connect and fix the connecting hose 24 to the equipment to be docked with the vehicle before connecting the connecting hose 24 to the connector 4 of the conveying pipe 3 or the connector 4 of the branch pipe 19. The fixed plugs 25 can temporarily fix the connecting hose 24 when it is not in use, reducing the probability of the connecting hose 24 falling off.

[0032] A type of tanker refueling truck, as shown in the reference Figure 7 The vehicle includes a body 26, which is an existing tanker refueling truck. A pump box is installed on the body 26, which is installed on the side wall at the rear of the body 26. One end of the conveying pipe 3 inside the pump box is connected to the oil tank of the body 26.

[0033] The implementation principle of this application embodiment is as follows: When it is necessary to output petroleum from the vehicle's fuel tank to the gas station's fuel tank, the housing 1 is opened, and then the input pipe on the gas station's fuel tank is connected and fixed to the connector 4 on the delivery pipe 3. Then, the clamping mechanism 16 is rotated to clamp and fix the input pipe to the connector 4. During this process, the clamping mechanism 16 presses to trigger the push switch 18, and the output pump 5 circuit is connected. Then, the output pump 5 is started to input petroleum into the gas station's fuel tank. After the petroleum input is completed, the output pump 5 is stopped, and then the clamping mechanism 16 is disengaged from the input pipe. The push switch 18 is released, connecting the circuit of the marking machine 71. The marking machine 71 starts to mark the iron sheet according to the petroleum flow rate calculated by the flow meter 6. After the marking is completed, the circuit of the marking machine 71 is disconnected, the marked iron sheet is taken out, and the iron sheet is attached to the gas station's fuel tank to complete the replenishment of the fuel in the gas station's fuel tank and the registration of the fuel quantity. When the location of the gas station's fuel tank is unsuitable for parking, the fuel is replenished by connecting hose 24 to the input pipe, and then connecting and fixing the connector 4 on the delivery pipe 3 of the connecting hose 24. When refueling a tanker truck, the input pipe on the tanker truck's refueling container is connected to the connector 4 on the branch pipe 19, and then the input pump 20 is started to extract the oil from the tanker truck's refueling container and send it into the vehicle's fuel tank. When parking is inconvenient around the tanker truck's refueling container, the fuel is replenished by connecting hose 24 to the input pipe on the tanker truck's refueling container, and then connecting hose 24 to the connector 4 on the branch pipe 19. The input pump 20 is started to extract the oil from the tanker truck's refueling container and send it into the vehicle's fuel tank.

[0034] It should be noted that the above embodiments are only used to illustrate this application and are not intended to limit the technical solutions described in this application. Although this specification has described this application in detail with reference to the above embodiments, those skilled in the art should understand that they can still make modifications or equivalent substitutions to this application. All technical solutions and improvements that do not depart from the spirit and scope of this application should be covered within the scope of the claims of this application.

Claims

1. A pump box with digital display metering and marking functions, comprising a box body (1), wherein a conveying pipe (3) is installed inside the box body (1), one end of the conveying pipe (3) is connected to an oil tank on a vehicle, and a connector (4) is installed at the other end, an output pump (5) is installed on the conveying pipe (3), and a flow meter (6) is installed on the conveying pipe (3), characterized in that: The box (1) is equipped with a marking device (7). The marking device (7) includes a marking machine (71), a processor (72) and a feeding mechanism (73). The marking machine (71) is installed inside the box (1). The processor (72) is installed inside the box (1). The processor (72) is electrically connected to the marking machine (71) and the flow meter (6). The feeding mechanism (73) is installed in the working area of ​​the marking machine (71). The feeding mechanism (73) replenishes the iron sheets in the working area of ​​the marking machine (71).

2. A pump box with digital display metering and marking functions according to claim 1, characterized in that: The feeding mechanism (73) includes a positioning frame (731) and a placement box (732). The positioning frame (731) is installed in the working area of ​​the marking machine (71), and the placement box (732) is installed on the positioning frame (731). The placement box (732) is set in the working area of ​​the marking machine (71) through the gap of the positioning frame (731). The top of the placement box (732) is provided with a placement opening (8), and the bottom side of the placement box (732) is provided with a discharge port (9).

3. A pump box with digital display metering and marking functions according to claim 2, characterized in that: The positioning frame (731) includes a mounting rod (7311) and a positioning frame (7312). The mounting rod (7311) is fixed on the marking machine (71), and the positioning frame (7312) is fixed on the end of the mounting rod (7311) away from the marking machine (71). The mounting rod (7311) is a telescopic rod.

4. A pump box with digital display metering and marking functions according to claim 3, characterized in that: The placement box (732) is hinged to a cover plate (10), which opens or closes the placement opening (8) by rotation.

5. A pump box with digital display metering and marking functions according to claim 1, characterized in that: A clamping mechanism (16) is installed on the connector (4). The clamping mechanism (16) includes a rotating plate (161) and a clamping plate (162). The rotating plate (161) is rotatably mounted on the connector (4). The clamping plate (162) is fixed on the rotating plate (161) perpendicular to the rotating plate (161). When the rotating plate (161) rotates to abut against the side wall of the connector (4), the clamping plate (162) abuts against the pipe that is connected to the connector (4) and presses the pipe that is connected to the connector (4) onto the connector (4).

6. A pump box with digital display metering and marking functions according to claim 5, characterized in that: The clamping plate (162) includes a fixing part (1621) and an abutting part (1622). The fixing part (1621) is fixed to the rotating plate (161), and the abutting part (1622) is slidably disposed on the fixing part (1621). An elastic member (17) is provided between the abutting part (1622) and the fixing part (1621). The elastic member (17) drives the abutting part (1622) to slide away from the fixing part (1621).

7. A pump box with digital display metering and marking functions according to claim 6, characterized in that: A push switch (18) is embedded in the side wall of the connector (4). When the rotating plate (161) rotates and abuts against the side wall of the connector (4), the push switch (18) is triggered. The push switch (18) is electrically connected to the output pump (5) and the marking machine (71).

8. A pump box with digital display metering and marking functions according to claim 7, characterized in that: The clamping mechanism (16) is evenly arranged in several groups around the connector (4), and the pressing switch (18) is arranged in several corresponding clamping mechanisms (16).

9. A pump box with digital display metering and marking functions according to claim 8, characterized in that: The delivery pipeline (3) is connected to and communicates with a branch pipeline (19), and an input pump (20) is installed on the branch pipeline (19).

10. A tank-type refueling truck, comprising a vehicle body (26), characterized in that: The pump box as described in claim 9 is installed on the vehicle body (26).

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