Vehicle oil quantity measuring device and measuring method

Abstract

The invention relates to the technical field of vehicle oil quantity measurement, in particular to a vehicle oil quantity measuring device and method.The vehicle oil quantity measuring device comprises an oil tank, a cleaning seat is fixedly connected to the oil tank, a rotating cover is rotatably connected to the cleaning seat, an oil quantity measuring mechanism is fixedly connected to the rotating cover, and a floating ball wiper is arranged in the cleaning seat; one side of the floating ball eraser is rotatably connected with the transmission mechanism, the liquid pumping seat is fixedly connected in the cleaning seat, the pressing mechanism is rotatably connected in the cleaning seat, and the liquid discharge valve is fixedly connected to the outer end of the cleaning seat. The attached dirt is removed, blocking or unbalanced movement of the floating ball caused by oil dirt is avoided, and free movement of the floating ball in the oil tank is ensured, so that the accuracy and reliability of oil quantity measurement are improved, and meanwhile, the service life of the floating ball and related components is prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle oil quantity measurement, and in particular to a vehicle oil quantity measurement device and a measurement method. Background Art

[0002] Vehicle fuel measurement refers to real-time or regular monitoring and recording of the amount of fuel in the vehicle tank through certain technical means and equipment. Accurate fuel measurement can not only help the driver understand the remaining fuel level and prevent unexpected stops due to insufficient fuel, but also has important significance for vehicle fuel consumption management, maintenance and other aspects.

[0003] Common methods and technologies for measuring vehicle fuel volume mainly include the following: 1. Mechanical float type oil gauge Principle: The mechanical float type oil gauge is a traditional oil measurement method, which usually uses a combination of a float and a mechanical lever to sense the oil level in the tank. The float moves up and down as the oil level changes, and the lever transmits the position change of the float, driving the pointer to display the oil level.

[0004] 2. Capacitive oil level sensor Principle: Capacitive oil level sensor measures the oil level by the change of capacitance in the oil tank. The change of the oil level in the oil tank will cause the capacitance value to change. The sensor calculates the oil level by monitoring the change of capacitance.

[0005] 3. Float type resistance sensor Principle: The float floats on the oil surface. As the amount of oil increases or decreases, the float rises or sinks in the oil tank. This process is achieved through the combination of the float and the resistor. The floating of the float changes the resistance value, which is converted into oil amount information through the detection of the electronic module.

[0006] When the existing vehicle oil level measuring device uses a float to measure, the float is easily contaminated by oil impurities such as oil residue during long-term use. It will adhere to the surface of the float, causing the surface of the float to become dirty. Since it is inconvenient to clean the float, the accumulation of dirt on the surface of the float will increase the friction of the float, which may cause the float to move poorly and fail to accurately reflect the oil level changes, thus affecting the measurement accuracy and real-time feedback.

[0007] In summary, the prior art lacks a technique for regularly cleaning the float when measuring vehicle oil through the float. Summary of the invention

[0008] The purpose of the present invention is to solve the shortcomings of the background technology and to propose a vehicle oil level measuring device and a measuring method.

[0009] To achieve the above objectives, the technical solution adopted by the present invention is: a vehicle oil quantity measuring device, including a fuel tank, a cleaning seat is fixedly connected to the fuel tank, a rotating cover is rotatably connected to the cleaning seat, an oil quantity measuring mechanism is fixedly connected to the rotating cover, a float wipe is arranged in the cleaning seat, a transmission mechanism is rotatably connected to one side of the float wipe, a liquid extraction seat is fixedly connected to the cleaning seat, a pressing mechanism is rotatably connected to the cleaning seat, and a drain valve is fixedly connected to the outer end of the cleaning seat.

[0010] Preferably, the cleaning seat is provided with a hollow structure, a cleaning groove is provided in the cleaning seat, the bottom end of the cleaning groove is communicated with one end of the drain valve, and a concave-convex groove frame is fixedly connected in the cleaning groove.

[0011] Preferably, a motor A is fixedly connected to the bottom end of the rotating cover, the motor A is fixedly connected to the inner wall of the cleaning seat, an arc-shaped rack A is fixedly connected to the lower surface of the rotating cover, an arc-shaped rack B is fixedly connected to the outer wall of the rotating cover, an opening and closing wheel is fixedly connected to the valve stem of the drain valve, and the opening and closing wheel is meshingly transmission-arranged with the arc-shaped rack B.

[0012] Preferably, the oil quantity measuring mechanism includes a storage tube, a motor B is fixedly connected to the outer wall at the top end of the storage tube, the output end of the motor B extends into the storage tube and is fixedly connected to a threaded rod, an adjustment seat is threadedly connected to the outer wall of the threaded rod, a movable seat is slidably provided on the adjustment seat, an electric push rod is fixedly connected to the lower surface of the movable seat, and the other end of the electric push rod extends into the oil tank and is fixedly connected to a float.

[0013] Preferably, a rotating seat is provided on the lower side of the float wiper for sliding cooperation, the bottom end of the rotating seat is rotatably connected to the inner wall of the cleaning tank, a motor C is fixedly connected to the outer end of the rotating seat, and an arc-shaped rack C is fixedly connected to the top of the float wiper.

[0014] Preferably, the transmission mechanism includes a transmission rod, which is rotatably connected to a rotating seat, a transmission wheel is fixedly connected to one end of the transmission rod, and the transmission wheel is meshed with an arc-shaped rack C for transmission, a spiral groove is provided on the outer wall of the other end of the transmission rod, a push-pull ring is slidingly matched with the outer wall of the transmission rod, the push-pull ring is slidingly matched with the rotating seat, the protrusion on the inner wall of the push-pull ring is slidingly matched with the inner wall of the spiral groove, the bottom end of the push-pull ring is fixedly connected to a guide rod, and the outer wall of the bottom end of the guide rod is slidingly matched with the inner wall of the concave-convex groove frame.

[0015] Preferably, the input end of the liquid extraction seat is connected to the inner wall of the cleaning seat, and the output end of the liquid extraction seat is connected to the inner wall of the cleaning tank. A piston is provided in the liquid extraction seat for sliding cooperation, a spring is fixedly connected between the bottom end of the piston and the inner wall of the liquid extraction seat, a contact rod is fixedly connected to the piston, and the contact rod is slidably provided with the liquid extraction seat and the inner wall of the cleaning seat.

[0016] Preferably, the pressing mechanism includes a pressing rod, which is rotatably connected to the inner wall of the cleaning seat, and the outer wall of the pressing rod is slidably contacted with the outer wall of the contact rod. The inner wall of the outer circle of the pressing rod is in an annular structure and rotatably connected with a plurality of meshing teeth. A tension spring is fixedly connected between the meshing teeth and the inner wall of the outer circle of the pressing rod, and the meshing teeth are meshingly transmitted with the arc-shaped rack A.

[0017] A method for measuring a vehicle oil level measuring device comprises the following steps: S1. During the use of the vehicle, the oil level in the fuel tank can be measured in real time through the oil level measuring mechanism; S2. When the oil quantity measuring mechanism needs to be cleaned, after the oil quantity measuring mechanism is retracted, the rotating cover will drive the oil quantity measuring mechanism to move to the side of the cleaning seat; S3. When the rotating cover rotates, an appropriate amount of cleaning liquid will be injected into the cleaning position of the cleaning seat through the liquid pumping seat, and then the floating ball wiper will be driven by the transmission mechanism to wipe and clean the oil quantity measuring mechanism; S4. After cleaning, when the rotating cover rotates, the drain valve will open to discharge the cleaning waste water.

[0018] Compared with the prior art, the present invention has the following beneficial effects: When the float ball measures the oil level in the vehicle tank, a float ball wiper is provided, and driven by the transmission mechanism, the self-rotating float ball wiper moves back and forth at the same time, thereby cleaning the float ball surface and preventing oil stains from adhering to the float ball. The reciprocating motion can effectively wipe the float ball surface and remove the attached dirt, avoiding the blockage or unbalanced movement of the float ball caused by oil stains, and ensuring the free movement of the float ball in the tank, thereby improving the accuracy and reliability of oil level measurement and extending the service life of the float ball and related components; By setting up a pumping seat, when the rotating cover drives the oil volume measuring mechanism to clean, the cleaning liquid will be automatically sucked into the cleaning tank through the pressing mechanism and the pumping seat, so as to realize the immersion cleaning of the float. The automatic cleaning design reduces the need for manual cleaning. The vehicle maintenance personnel do not need to frequently disassemble and clean the float, which reduces the maintenance cost and work intensity. By setting a rotating cover, it is convenient to drive the oil quantity measuring mechanism to rotate to the top of the cleaning tank to realize automatic cleaning. At the same time, by setting an arc-shaped rack B on the rotating cover, it is possible to automatically drive the opening and closing of the drain valve, which is convenient for the automatic discharge of the cleaning waste liquid, greatly improving the cleaning efficiency and automation level of the oil quantity measuring device, maintaining the good operation of the system and the cleanliness of the environment, and providing a guarantee for the long-term reliability of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of a vehicle oil quantity measuring device and a measuring method of the present invention; Figure 2 It is a partial cross-sectional schematic diagram of the overall structure of a vehicle oil quantity measuring device and a measuring method of the present invention; Figure 3 A partial cross-sectional schematic diagram of a vehicle oil level measuring device and a measuring method according to the present invention; Figure 4 A schematic cross-sectional view of a rotating cover structure of a vehicle oil quantity measuring device and a measuring method of the present invention; Figure 5 It is a partial cross-sectional schematic diagram of the cleaning seat and other structures of a vehicle oil quantity measuring device and measuring method of the present invention; Figure 6 It is a schematic diagram of a cross-sectional expansion of the oil quantity measuring mechanism structure of a vehicle oil quantity measuring device and a measuring method of the present invention; Figure 7 It is a schematic diagram of the structure of a floating ball wiper and a transmission mechanism of a vehicle oil quantity measuring device and a measuring method of the present invention; Figure 8 A schematic cross-sectional view of a pumping seat structure of a vehicle oil quantity measuring device and a measuring method of the present invention; Fig. 9 The present invention is a schematic diagram of a pressing mechanism structure of a vehicle oil quantity measuring device and a measuring method.

[0020] The following are marked in the figure: 1, oil tank; 2, cleaning seat; 3, rotating cover; 4, oil quantity measuring mechanism; 5, floating ball wiper; 6, transmission mechanism; 7, liquid extraction seat; 8, pressing mechanism; 9, drain valve; 201, cleaning tank; 202, concave and convex groove frame; 301, motor A; 302, arc-shaped rack A; 303, arc-shaped rack B; 901, opening and closing wheel; 401, storage tube; 402, motor B; 403, threaded rod; 404, adjustment seat; 405, moving seat; 406, electric push rod; 407, float; 501, rotating seat; 502, motor C; 503, arc rack C; 601, transmission rod; 602, transmission wheel; 603, spiral groove; 604, push-pull ring; 605, guide rod; 701, piston; 702, spring; 703, contact rod; 801, pressing rod; 802, meshing teeth; 803, tension spring. DETAILED DESCRIPTION

[0021] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0022] like Figure 1-Figure 9 A vehicle oil quantity measuring device and measuring method shown in the figure include an oil tank 1, a cleaning seat 2 is fixedly connected to the oil tank 1, a rotating cover 3 is rotatably connected to the cleaning seat 2, an oil quantity measuring mechanism 4 is fixedly connected to the rotating cover 3, a float wiper 5 is arranged in the cleaning seat 2, a transmission mechanism 6 is rotatably connected to one side of the float wiper 5, a liquid extraction seat 7 is fixedly connected to the cleaning seat 2, a pressing mechanism 8 is rotatably connected to the cleaning seat 2, and a drain valve 9 is fixedly connected to the outer end of the cleaning seat 2.

[0023] like Figure 5 As shown, the cleaning seat 2 is arranged in a hollow structure, a cleaning tank 201 is provided in the cleaning seat 2 , the bottom end of the cleaning tank 201 is connected to one end of the drain valve 9 , and a concave-convex groove frame 202 is fixedly connected in the cleaning tank 201 .

[0024] like Figure 4 , Figure 5 As shown, a motor A301 is fixedly connected to the bottom end of the rotating cover 3, the motor A301 is fixedly connected to the inner wall of the cleaning seat 2, an arc-shaped rack A302 is fixedly connected to the lower surface of the rotating cover 3, an arc-shaped rack B303 is fixedly connected to the outer wall of the outer side of the rotating cover 3, an opening and closing wheel 901 is fixedly connected to the valve stem of the drain valve 9, and the opening and closing wheel 901 is meshed with the arc-shaped rack B303 for transmission.

[0025] like Figure 6 As shown, the oil quantity measuring mechanism 4 includes a storage tube 401, and a motor B402 is fixedly provided on the outer wall of the top end of the storage tube 401, and the output end of the motor B402 extends into the storage tube 401 and is fixedly provided with a threaded rod 403, and an adjustment seat 404 is threadedly provided on the outer wall of the threaded rod 403, and a movable seat 405 is slidably provided on the adjusting seat 404, and an electric push rod 406 is fixedly provided on the lower surface of the movable seat 405, and the other end of the electric push rod 406 extends into the oil tank 1 and is fixedly provided with a float 407.

[0026] like Figure 7As shown, a rotating seat 501 is provided at the lower side of the floating ball wiper 5 for sliding cooperation, the bottom end of the rotating seat 501 is rotatably connected to the inner wall of the cleaning tank 201, a motor C502 is fixedly provided at the outer end of the rotating seat 501, and an arc-shaped rack C503 is fixedly provided on the floating ball wiper 5. The rotating seat 501 connected is driven to rotate by the motor C502, so that the rotating seat 501 drives the floating ball wiper 5 to rotate and wipe the outer wall of the floating ball 407.

[0027] like Figure 7 As shown, the transmission mechanism 6 includes a transmission rod 601, which is rotatably connected to the rotating seat 501, and a transmission wheel 602 is fixedly connected to one end of the transmission rod 601, and the transmission wheel 602 is meshed with the arc-shaped rack C503 for transmission. A spiral groove 603 is provided on the outer wall of the other end of the transmission rod 601, and a push-pull ring 604 is slidably provided on the outer wall of the transmission rod 601. The push-pull ring 604 is slidably provided with the rotating seat 501, and the protrusion on the inner wall of the push-pull ring 604 is slidably provided with the inner wall of the spiral groove 603. The bottom end of the push-pull ring 604 is fixedly connected to a guide rod 605, and the outer wall of the bottom end of the guide rod 605 is slidably provided with the inner wall of the concave-convex groove frame 202. Under the action of the concave-convex groove frame 202, the push-pull ring 604 connected to the guide rod 605 will move back and forth, so that the protrusion in the push-pull ring 604 will slide in the spiral groove 603, thereby driving the transmission rod 601 to rotate forward and reverse, and then the transmission rod 601 will drive the connected transmission wheel 602 to rotate, so that the transmission wheel 602 drives the float wiper 5 connected to the arc-shaped rack C503 to move back and forth.

[0028] like Figure 8 As shown, the input end of the liquid pumping seat 7 is connected to the inner wall of the cleaning seat 2, and the output end of the liquid pumping seat 7 is connected to the inner wall of the cleaning tank 201. A piston 701 is provided in the liquid pumping seat 7 for sliding cooperation. A spring 702 is fixedly provided between the bottom end of the piston 701 and the inner wall of the liquid pumping seat 7. A contact rod 703 is fixedly provided on the piston 701. The contact rod 703 is provided for sliding cooperation with the liquid pumping seat 7 and the inner wall of the cleaning seat 2. A one-way ball valve is installed in both the input and output ends of the liquid pumping seat 7.

[0029] like Fig. 9 As shown, the pressing mechanism 8 includes a pressing rod 801, which is rotatably connected to the inner wall of the cleaning seat 2, and the outer wall of the pressing rod 801 is slidably contacted with the outer wall of the contact rod 703. The inner wall of the outer circle of the pressing rod 801 is annularly structured and rotatably connected to be provided with a plurality of meshing teeth 802. A tension spring 803 is fixedly connected between the meshing teeth 802 and the inner wall of the outer circle of the pressing rod 801, and the meshing teeth 802 are meshed and driven with the arc-shaped rack A302. The tension spring 803 realizes the one-way meshing of the meshing teeth 802.

[0030] A method for measuring a vehicle oil level measuring device comprises the following steps: S1. During the use of the vehicle, the oil level in the oil tank 1 can be measured in real time through the oil level measuring mechanism 4; S2. When the oil quantity measuring mechanism 4 needs to be cleaned, after the oil quantity measuring mechanism 4 is retracted, the rotating cover 3 will drive the oil quantity measuring mechanism 4 to move to the side of the cleaning seat 2; S3, when the rotating cover 3 rotates, an appropriate amount of cleaning liquid will be injected into the cleaning position of the cleaning seat 2 through the liquid pumping seat 7, and then the floating ball wiper 5 will be driven by the transmission mechanism 6 to wipe and clean the oil quantity measuring mechanism 4; S4. After cleaning is completed, when the rotating cover 3 rotates, the drain valve 9 is driven to open, so that the cleaning waste water is discharged.

[0031] Working principle: When the float 407 needs to be cleaned, the motor B402 is first used to drive the threaded rod 403 to rotate, so that the threaded rod 403 drives the adjustment seat 404 to move upward, so that the adjustment seat 404 can drive the moving seat 405 to move upward, and then the electric push rod 406 is used to drive the float 407, so that the float 407 is retracted into the storage tube 401; Then, the motor A301 is used to drive the rotating cover 3 to rotate, so that the rotating cover 3 drives the oil quantity measuring mechanism 4 to rotate above the cleaning tank 201. When the rotating cover 3 rotates, it drives the connected arc-shaped rack B303 to rotate, so that the arc-shaped rack B303 drives the opening and closing wheel 901 to rotate, so that the valve stem connected to the opening and closing wheel 901 drives the drain valve 9 to close; Then, when the rotating cover 3 rotates, the connected arc-shaped rack A302 is driven to rotate, so that the arc-shaped rack A302 meshes with the meshing teeth 802, and at this time, the pressing rod 801 is driven to rotate, so that the pressing rod 801 contacts and squeezes the contact rod 703, so that the contact rod 703 drives the connected piston 701 to move downward, and cooperates with the spring 702 to realize the suction and injection of the cleaning liquid in the cleaning seat 2 into the cleaning tank 201; Then, the electric push rod 406 is used to drive the float 407 to be inserted into the cleaning tank 201, and then the motor C502 is used to drive the connected rotating seat 501 to rotate, so that the rotating seat 501 drives the float wiper 5 to rotate and wipe the outer wall of the float 407; At the same time, under the action of the concave-convex groove frame 202, the push-pull ring 604 connected to the guide rod 605 will reciprocate, so that the protrusion in the push-pull ring 604 will slide in the spiral groove 603, thereby driving the transmission rod 601 to rotate forward and reverse, and then the transmission rod 601 will drive the connected transmission wheel 602 to rotate, so that the transmission wheel 602 drives the floating ball wiper 5 connected to the arc-shaped rack C503 to reciprocate and wipe the outer wall of the floating ball 407; After cleaning, the float 407 is put back into the storage tube 401, and then the rotating cover 3 is driven to reverse. At this time, under the action of the arc-shaped rack B303, the opening and closing wheel 901 can be driven to rotate, thereby driving the drain valve 9 to open and discharge the waste liquid. After the float 407 is drained, it is placed in the oil tank 1; The float 407 floats on the oil surface. As the oil volume increases or decreases, the float 407 rises or sinks in the oil tank 1. This process is achieved by combining the float 407 with a resistor. The floating of the float 407 changes the resistance value, which is converted into oil volume information through detection by the electronic module.

[0032] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. A vehicle fuel level measuring device, comprising a fuel tank (1), characterized in that: A cleaning seat (2) is fixedly connected to the oil tank (1), a rotating cover (3) is rotatably connected to the cleaning seat (2), an oil quantity measuring mechanism (4) is fixedly connected to the rotating cover (3), a floating ball wiper (5) is arranged in the cleaning seat (2), a transmission mechanism (6) is rotatably connected to one side of the floating ball wiper (5), a liquid extraction seat (7) is fixedly connected to the cleaning seat (2), a pressing mechanism (8) is rotatably connected to the cleaning seat (2), and a liquid discharge valve (9) is fixedly connected to the outer end of the cleaning seat (2).

2. A vehicle oil level measuring device according to claim 1, characterized in that: The cleaning seat (2) is provided with a hollow structure, a cleaning groove (201) is provided in the cleaning seat (2), the bottom end of the cleaning groove (201) is connected to one end of the drain valve (9), and a concave-convex groove frame (202) is fixedly provided in the cleaning groove (201).

3. A vehicle oil level measuring device according to claim 1, characterized in that: A motor A (301) is fixedly connected to the bottom end of the rotating cover (3), and the motor A (301) is fixedly connected to the inner wall of the cleaning seat (2). An arc-shaped rack A (302) is fixedly connected to the lower surface of the rotating cover (3), and an arc-shaped rack B (303) is fixedly connected to the outer wall of the rotating cover (3). An opening and closing wheel (901) is fixedly connected to the valve stem of the drain valve (9), and the opening and closing wheel (901) is meshed with the arc-shaped rack B (303) for transmission.

4. A vehicle oil level measuring device according to claim 1, characterized in that: The oil quantity measuring mechanism (4) comprises a storage tube (401), a motor B (402) being connected and fixedly arranged on the outer wall of the top end of the storage tube (401), an output end of the motor B (402) extending into the storage tube (401) and being connected and fixedly arranged on a threaded rod (403), an adjustment seat (404) being threadedly connected and arranged on the outer wall of the threaded rod (403), a moving seat (405) being slidably arranged on the adjusting seat (404), an electric push rod (406) being connected and fixedly arranged on the lower surface of the moving seat (405), and the other end of the electric push rod (406) extending into the oil tank (1) and being connected and fixedly arranged on a floating ball (407).

5. A vehicle oil level measuring device according to claim 1, characterized in that: A rotating seat (501) is slidably provided on the lower side of the floating ball wiper (5); the bottom end of the rotating seat (501) is rotatably connected to the inner wall of the cleaning tank (201); a motor C (502) is fixedly connected to the outer end of the rotating seat (501); and an arc-shaped rack C (503) is fixedly connected to the upper side of the floating ball wiper (5).

6. A vehicle oil level measuring device according to claim 1, characterized in that: The transmission mechanism (6) comprises a transmission rod (601), the transmission rod (601) is rotatably connected to the rotating seat (501), a transmission wheel (602) is fixedly connected to one end of the transmission rod (601), the transmission wheel (602) is meshed with the arc-shaped rack C (503) for transmission, a spiral groove (603) is provided on the outer wall of the other end of the transmission rod (601), a push-pull ring (604) is slidably matched on the outer wall of the transmission rod (601), the push-pull ring (604) is slidably matched with the rotating seat (501), a protrusion on the inner wall of the push-pull ring (604) is slidably matched with the inner wall of the spiral groove (603), a guide rod (605) is fixedly connected to the bottom end of the push-pull ring (604), and the outer wall of the bottom end of the guide rod (605) is slidably matched with the inner wall of the concave-convex groove frame (202).

7. A vehicle oil level measuring device according to claim 1, characterized in that: The input end of the liquid extraction seat (7) is in communication with the inner wall of the cleaning seat (2), and the output end of the liquid extraction seat (7) is in communication with the inner wall of the cleaning tank (201). A piston (701) is provided in a sliding manner in the liquid extraction seat (7), a spring (702) is fixedly provided between the bottom end of the piston (701) and the inner wall of the liquid extraction seat (7), a contact rod (703) is fixedly provided on the piston (701), and the contact rod (703) is provided in a sliding manner through the inner wall of the liquid extraction seat (7) and the cleaning seat (2).

8. A vehicle oil level measuring device according to claim 1, characterized in that: The pressing mechanism (8) comprises a pressing rod (801), the pressing rod (801) being rotatably connected to the inner wall of the cleaning seat (2), the outer wall of the pressing rod (801) being slidably contacted to the outer wall of the contact rod (703), the outer circle inner wall of the pressing rod (801) being rotatably connected to be provided with a plurality of meshing teeth (802) in an annular structure, the meshing teeth (802) being fixedly connected to the outer circle inner wall of the pressing rod (801) by a tension spring (803), and the meshing teeth (802) being meshingly transmission arranged with the arc-shaped rack A (302).

9. A vehicle fuel level measuring device and a measuring method, using a vehicle fuel level measuring device according to any one of claims 1 to 8, comprising the following steps: S1. During the use of the vehicle, the oil level in the oil tank (1) can be measured in real time by means of the oil level measuring mechanism (4); S2. When the oil quantity measuring mechanism (4) needs to be cleaned, the oil quantity measuring mechanism (4) is retracted, and the rotating cover (3) drives the oil quantity measuring mechanism (4) to move to one side of the cleaning seat (2); S3, when the rotating cover (3) rotates, an appropriate amount of cleaning liquid is injected into the cleaning position of the cleaning seat (2) through the liquid extraction seat (7), and then the floating ball wiper (5) is driven by the transmission mechanism (6) to wipe and clean the oil quantity measuring mechanism (4); S4. After cleaning is completed, when the rotating cover (3) rotates, the drain valve (9) is driven to open, so that the cleaning waste water is discharged.

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