Multifunctional detection tool for fuel tank valve of new energy automobile

Abstract

The invention relates to the technical field of automobile part detection, in particular to a multifunctional detection tool for a fuel tank valve of a new energy automobile. Comprising a machine body, the upper end of which is provided with a detection groove; a mounting plate is rotationally connected into the detection groove; through the cooperation of the gas inlet and the liquid inlet, water is conveyed to enter the detection groove through the liquid inlet, the driving motor is controlled to drive the valve to turn over into the water, and then external nitrogen is controlled to enter the valve through the gas inlet, so that the sealing performance of the valve is detected, and at the moment, the heating resistance wire is controlled to heat the water in the detection groove; the temperature resistance of the valve can be detected, the air tightness of the valve at different temperatures can be tested, in addition, the sealing cover is arranged to ensure the sealing of the detection groove, the pressure resistance of the valve can be detected by conveying water vapor into the detection groove, the detection of multiple performances is realized, the valve is prevented from being frequently disassembled and reassembled, and the detection efficiency is improved. Therefore, the complexity of manual operation is effectively reduced, and the working efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile component detection, in particular to a multifunctional detection tool for a fuel tank valve of a new energy vehicle. Background Art

[0002] New energy vehicles refer to vehicles that use non-traditional fuels (gasoline, diesel) as their main energy source and are driven by new power systems. They have the characteristics of energy saving, environmental protection, and low emissions. Common types of new energy vehicles include electric vehicles, plug-in hybrid vehicles, fuel cell vehicles, etc.

[0003] Among them, plug-in hybrid vehicles are a type of vehicle that combines the dual power advantages of electric vehicles and traditional fuel vehicles. It is not only equipped with an electric drive system, but also equipped with a traditional internal combustion engine. It aims to achieve a balance between energy saving and environmental protection and endurance. In contrast, pure electric vehicles cannot continue to drive after the battery is exhausted and must be charged. Plug-in hybrid vehicles automatically switch to engine drive when the battery is exhausted, and the fuel in the tank provides "backup energy". This dual-power mode enables it to operate smoothly during long-distance high-speed driving or in environments with insufficient charging facilities, without worrying about endurance or charging issues, which makes plug-in hybrid vehicles widely popular.

[0004] With the continuous development of the plug-in hybrid vehicle industry, the requirements for vehicle safety performance are also constantly increasing. Therefore, before the vehicle is assembled and shipped, the performance of each key component must be strictly tested. Taking the fuel tank valve as an example, its sealing performance, pressure resistance and temperature resistance must be tested separately. Currently, these tests are usually conducted separately and require the use of multiple testing equipment. This not only leads to high testing costs, but also requires frequent disassembly and assembly of the valve between different performance tests, which increases the complexity of manual operations and reduces overall testing efficiency.

[0005] In view of this, in order to overcome the above technical problems, the present invention proposes a multifunctional detection tool for the fuel tank valve of a new energy vehicle, which solves the above technical problems. Summary of the Invention

[0006] In order to make up for the shortcomings of the existing technology, the present invention proposes a multifunctional testing tool for the fuel tank valve of a new energy vehicle. The present invention cooperates with the air inlet and the liquid inlet, and delivers water into the test tank through the liquid inlet, controls the driving motor to drive the valve to flip into the water, and then controls the external nitrogen to enter the valve through the air inlet, so as to detect the sealing of the valve. At this time, the heating resistance wire is controlled to heat the water in the test tank, which not only detects the temperature resistance of the valve, but also tests the air tightness of the valve at different temperatures. In addition, the setting of the sealing cover ensures the closure of the test tank, and the pressure resistance of the valve can be tested by delivering water vapor into the test tank. The present invention avoids frequent disassembly and reassembly of the valve by realizing the detection of multiple performances, thereby effectively reducing the complexity of manual operation and improving work efficiency.

[0007] The technical solution adopted by the present invention to solve the technical problem is: a multifunctional detection tool for the fuel tank valve of a new energy vehicle described in the present invention comprises:

[0008] The body comprises a detection slot at the upper end of the body; a mounting plate is rotatably connected in the detection slot; two clamping plates are slidably connected to the upper end of the mounting plate; a screw is provided between the two clamping plates; the screw is rotatably connected to the mounting plate; the two clamping plates are helically connected to the two ends of the screw; the threads at the two ends of the screw are arranged in opposite directions; a liquid inlet connected to the detection slot is provided on one side of the body;

[0009] A drive motor is mounted on one side of the machine body; the drive motor is used to drive the mounting plate to rotate; an air inlet is formed at one end of the mounting plate away from the drive motor; the air inlet is connected to an external nitrogen delivery pipeline; a circular groove is formed on the side wall of the clamping plate; the circular groove and the air inlet are connected via a spring hose;

[0010] The connecting unit is installed in the mounting plate; the driving motor drives the screw to rotate through the connecting unit.

[0011] Preferably, a mounting bracket is fixedly connected to one side of the machine body; a sealing cover is provided between the mounting bracket and the mounting plate; the sealing cover is sealed to the machine body; and the sealing cover and the mounting bracket are connected via an electro-hydraulic push rod.

[0012] Preferably, the connecting unit includes a connecting rod; a rectangular groove is provided at the output end of the driving motor; the connecting rod is slidably connected in the rectangular groove; the connecting rod and the bottom of the rectangular groove are connected by a connecting spring; an electromagnetic sheet is inlaid at the bottom of the rectangular groove; a protrusion is fixedly connected to the surface of the connecting rod; and a slot that matches the protrusion is provided at one end of the mounting plate close to the connecting rod.

[0013] Preferably, the connecting unit also includes a vertical rod; a groove is provided inside the mounting plate; the vertical rod is located in the groove; the vertical rod is fixedly connected to the end of the connecting rod away from the drive motor; a swivel is rotatably connected in the groove; the swivel is connected to the screw belt through a transmission belt; a vertical groove is provided at the end of the swivel close to the vertical rod.

[0014] Preferably, the inner wall of the detection tank is inlaid with a heating resistance wire; the surface of the mounting plate is inlaid with a temperature sensor and an air pressure sensor; the side wall of the body is provided with an observation window; and an acrylic plate is fixedly connected to the observation window.

[0015] Preferably, a pressing plate is provided in the detection groove; the pressing plate is fixedly connected to the machine body via a hydraulic push rod; the pressing plate and the clamping plate are both made of silicone rubber material.

[0016] Preferably, an annular groove is provided on the inner wall of the circular groove; an air film is fixedly connected in the annular groove; an air channel is provided in the splint; one end of the air channel is connected to the annular groove, and the other end is connected to the spring hose.

[0017] Preferably, a cavity connected to the airway is provided inside the splint; one end of the cavity is connected to the circular groove, and the other end is connected to the spring hose; a conversion plate is slidingly and sealedly connected in the cavity; a cylindrical groove and an L-shaped groove are provided on the inner wall of the conversion plate; the conversion plate is connected to the lower end surface of the cavity by a fixed spring; and an electromagnetic plate is embedded in the bottom of the cavity.

[0018] The beneficial effects of the present invention are as follows:

[0019] 1. The present invention cooperates with the air inlet and the liquid inlet, delivers water into the detection tank through the liquid inlet, controls the driving motor to drive the valve to flip into the water, and then controls the external nitrogen to enter the valve through the air inlet, so as to detect the sealing of the valve. At this time, the heating resistance wire is controlled to heat the water in the detection tank, which not only detects the temperature resistance of the valve, but also tests the air tightness of the valve at different temperatures. In addition, the setting of the sealing cover ensures the closure of the detection tank. By delivering water vapor into the detection tank, the pressure resistance of the valve can be tested. The present invention avoids frequent disassembly and reassembly of the valve by realizing the detection of multiple performances, thereby effectively reducing the complexity of manual operation and improving work efficiency.

[0020] 2. The present invention provides an air film so that the air film can clamp the valve port inserted into the circular groove, thereby clamping and sealing the air film and the outer wall of the valve, so that the nitrogen entering the circular groove enters the valve under the obstruction of the air film, thereby enabling the present invention to effectively detect valves with smaller diameters, thereby effectively improving the practicality of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] Figure 1 It is a perspective view of the present invention;

[0023] Figure 2 It is a structural schematic diagram of the present invention;

[0024] Figure 3 yes Figure 2 Enlarged view of point A in the middle;

[0025] Figure 4 yes Figure 2 Enlarged view of point B in the middle;

[0026] Figure 5 yes Figure 2 Enlarged view of point C in the middle;

[0027] Figure: 1. Body; 11. Detection tank; 111. Liquid inlet; 112. Heating resistor; 113. Temperature sensor; 114. Air pressure sensor; 115. Observation window; 116. Acrylic plate; 12. Mounting plate; 121. Screw; 122. Air inlet; 123. Vertical rod; 124. Groove; 125. Swivel; 126. Drive belt; 127. Vertical groove; 13. Clamp; 131. Circular groove; 132. Spring hose; 14. Drive motor ; 141. Connecting rod; 142. Rectangular groove; 143. Connecting spring; 144. Electromagnetic plate; 145. Bump; 146. Slot; 15. Mounting frame; 151. Sealing cover; 152. Electro-hydraulic push rod; 16. Clamping plate; 161. Hydraulic push rod; 17. Annular groove; 171. Air film; 172. Airway; 173. Cavity; 174. Conversion plate; 175. Cylindrical groove; 176. L-shaped groove; 177. Fixing spring; 178. Electromagnetic plate. DETAILED DESCRIPTION

[0028] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0029] like Figures 1 to 5 As shown, the multifunctional detection tool for the fuel tank valve of a new energy vehicle according to the present invention comprises:

[0030] The body 1 has a detection slot 11 at its upper end; a mounting plate 12 is rotatably connected within the detection slot 11; two clamping plates 13 are slidably connected to the upper end of the mounting plate 12; a screw 121 is provided between the two clamping plates 13; the screw 121 is rotatably connected to the mounting plate 12; the two clamping plates 13 are helically connected to the ends of the screw 121; the threads at the ends of the screw 121 are arranged in opposite directions; a liquid inlet 111 is provided on one side of the body 1 and communicates with the detection slot 11;

[0031] A drive motor 14 is mounted on one side of the body 1 ; the drive motor 14 is used to drive the mounting plate 12 to rotate; an air inlet 122 is defined at one end of the mounting plate 12 away from the drive motor 14 ; the air inlet 122 is connected to an external nitrogen delivery pipeline; a circular groove 131 is defined on the side wall of the clamping plate 13 ; the circular groove 131 is connected to the air inlet 122 via a spring hose 132 ;

[0032] The connecting unit is installed in the mounting plate 12 ; the driving motor 14 drives the screw 121 to rotate through the connecting unit.

[0033] As an embodiment of the present invention, a mounting bracket 15 is fixedly connected to one side of the body 1; a sealing cover 151 is provided between the mounting bracket 15 and the mounting plate 12; the sealing cover 151 is sealed and connected to the body 1; the sealing cover 151 and the mounting bracket 15 are connected via an electro-hydraulic push rod 152.

[0034] As an embodiment of the present invention, the connecting unit includes a connecting rod 141; a rectangular groove 142 is provided at the output end of the driving motor 14; the connecting rod 141 is slidably connected in the rectangular groove 142; the connecting rod 141 and the bottom of the rectangular groove 142 are connected by a connecting spring 143; the bottom of the rectangular groove 142 is inlaid with an electromagnetic sheet 144; a protrusion 145 is fixedly connected to the surface of the connecting rod 141; and a slot 146 is provided at one end of the mounting plate 12 close to the connecting rod 141, which cooperates with the protrusion 145.

[0035] As an embodiment of the present invention, the connecting unit also includes a vertical rod 123; a groove 124 is opened inside the mounting plate 12; the vertical rod 123 is located in the groove 124; the vertical rod 123 is fixedly connected to the end of the connecting rod 141 away from the drive motor 14; a swivel 125 is rotatably connected in the groove 124; the swivel 125 is connected to the screw 121 through a transmission belt 126; a vertical groove 127 is opened at the end of the swivel 125 close to the vertical rod 123.

[0036] As an embodiment of the present invention, the inner wall of the detection groove 11 is inlaid with a heating resistance wire 112; the surface of the mounting plate 12 is inlaid with a temperature sensor 113 and an air pressure sensor 114; the side wall of the body 1 is provided with an observation window 115; and an acrylic plate 116 is fixedly connected to the observation window 115.

[0037] During operation, with the continuous development of the plug-in hybrid vehicle industry, the requirements for vehicle safety performance are also constantly increasing. Therefore, before the whole vehicle is assembled and shipped, the performance of each key component must be strictly tested. Taking the fuel tank valve as an example, its sealing performance, pressure resistance and temperature resistance all need to be tested separately. At present, these tests are usually carried out separately and require the use of multiple testing equipment. This not only leads to high testing costs, but also the valve needs to be frequently disassembled and assembled between different performance tests, which increases the complexity of manual operation and reduces the overall testing efficiency.

[0038] To this end, the present invention cooperates with the air inlet 122 and the liquid inlet 111, and delivers water into the detection tank 11 through the liquid inlet 111, controls the drive motor 14 to drive the valve to flip into the water, and then controls the external nitrogen to enter the valve through the air inlet 122, so as to detect the sealing of the valve. At this time, the heating resistance wire 112 is controlled to heat the water in the detection tank 11, which not only detects the temperature resistance of the valve, but also tests the airtightness of the valve at different temperatures. In addition, the setting of the sealing cover 151 ensures the closure of the detection tank 11, and the pressure resistance of the valve can be tested by delivering water vapor into the detection tank 11. The present invention avoids frequent disassembly and reassembly of the valve by realizing the detection of multiple performances, thereby effectively reducing the complexity of manual operation and improving work efficiency.

[0039] Test of sealing performance: In the initial state, the user connects the external water supply pipe to the water inlet, and an electromagnetic valve is installed in the water inlet. The user controls the electromagnetic valve to open and controls the external water supply pipe to supply water into the detection tank 11 through the water inlet. During the water supply process, the user places the automobile fuel tank valve between the two plywood 13 and controls the electromagnetic plate 144 to be energized, so that the electromagnetic plate 144 can adsorb the connecting rod 141 and squeeze the connecting spring 143 into the rectangular groove 142, so that the connecting rod 141 drives the protrusion 145 to extend out of the slot 146, so that the protrusion 145 is separated from the mounting plate 12. As the connecting rod 141 is inserted into the rectangular groove 142, the connecting rod 141 can drive the vertical rod 123 connected to it to approach the swivel 125 until the connecting rod 141 drives the protrusion 145 to separate from the mounting plate 12, and the vertical rod 123 contacts the swivel 125. At this time, the swivel 125 blocks the connecting rod 141 from continuing to penetrate the rectangle through the vertical rod 123. When the vertical rod 123 rotates and faces the vertical slot 127, the connecting spring 143 pulls the connecting rod 141 to drive the vertical rod 123 to insert into the vertical slot 127, and continues to control the operation of the driving motor 14, so that the driving motor 14 can drive the vertical rod 123 to rotate through the connecting rod 141, so that the vertical rod 123 inserted into the vertical slot 127 pushes the swivel 125 to rotate through the groove wall of the vertical slot 127. Since the swivel 125 and the screw rod 121 are connected by the transmission belt 126, the rotating swivel 125 can drive the screw rod 121 to rotate through the transmission belt 126, so that the screw rod 121 drives the clamping plates 13 at both ends to move in the direction of approaching each other until the two clamping plates clamp the valve. At this time, the two end ports of the valve are connected to the circular groove 131 on the side wall of the clamping plate.

[0040] When the clamping plate 13 clamps the valve, the control electromagnetic plate 144 is de-energized. At this time, the connecting rod 141 extends out of the rectangular slot 142 under the push of the restoring force of the connecting spring 143, so that the connecting rod 141 pushes the vertical rod 123 to extend out of the vertical slot 127, and the protrusion 145 is driven by the connecting rod 141 to approach the mounting plate 12. When the protrusion 145 contacts the mounting plate 12, the vertical rod 123 is separated from the rotating ring 125. At this time, the control driving motor 14 is operated so that the driving motor 14 can drive the connecting rod 141 to drive the protrusion 145 to rotate, so that the protrusion 145 rotates to When facing the slot 146, the mounting plate 12 no longer blocks the protrusion 145, so that the connecting spring 143 pushes the connecting rod 141 to drive the protrusion 145 to insert into the slot 146. At this time, the drive motor 14 is controlled to operate so that the drive motor 14 can drive the mounting plate 12 to rotate, so that the mounting plate 12 drives the valve clamped by the clamping plate 13 to rotate into the detection slot 11. Since there is a sliding sealing contact between the mounting plate 12 and the inner wall of the detection slot 11, when the drive motor 14 stops rotating, the mounting plate 12 can maintain a close contact with the body 1.

[0041] When the driving motor 14 drives the mounting plate 12 to drive the valve to flip, so that the valve is vertically downward, the external water supply pipe is continued to be controlled to supply water into the detection tank 11 until the water entering the detection tank 11 overflows the valve clamped by the clamping plate 13, and the solenoid valve is controlled to close, and the external nitrogen supply pipe is controlled to supply nitrogen into the air inlet 122, so that the nitrogen entering the air inlet 122 can flow into the circular groove 131 through the spring hose 132 connected to the air inlet 122, so that the nitrogen entering the circular groove 131 can flow into the valve port. As the nitrogen is continuously filled into the valve, the gas pressure in the valve continues to increase. Since an acrylic plate 116 is installed in the observation window 115, and the acrylic plate 116 is a transparent material, the user can observe the valve in the detection tank 11 through the acrylic plate 116 of the observation window 115 to observe whether there are bubbles around the valve, thereby judging whether there is gas leakage in the valve and realizing the detection of the airtight performance of the valve.

[0042] Temperature resistance test: In the hot summer, especially when the oil tank is exposed to the sun for a long time, the valve is often exposed to a high temperature of 60-90℃, which directly affects the material and sealing of the valve. To this end, the present invention sets a heating resistor 112, and the drive motor 14 drives the mounting plate 12 to drive the valve to flip, so that the valve is vertically downward. At this time, the external water pipeline is continued to control the water to enter the detection tank 11 until the water entering the detection tank 11 overflows the valve clamped by the clamping plate 13. At this time, the water contacts the temperature sensor 113, controlling the solenoid valve to close. At the same time, The operation of the heating resistor is controlled so that the heating resistor can heat the water in the detection tank 11, and the temperature sensor 113 on the surface of the mounting plate 12 detects the temperature of the water in the detection tank 11 in real time. When the temperature reaches the set value, nitrogen is controlled to enter the valve through the air inlet 122, which not only realizes the temperature resistance performance test of the valve, but also can detect the sealing performance of the valve in a high temperature environment of 60-90℃, that is, the working condition of the valve in a high temperature environment can be tested, and the sealing performance of the valve in different temperature environments can be tested, thereby ensuring that the valve can still work normally under extreme temperatures.

[0043] Pressure resistance performance test: The purpose of the pressure resistance performance test is to verify that the valve can withstand a certain pressure without breaking or failing. For this purpose, before conducting the pressure resistance performance test, the present invention first connects the liquid inlet 111 with the external water vapor delivery pipeline, then controls the clamping plate 13 to clamp the valve, and then controls the electro-hydraulic push rod 152 to push the sealing cover 151 down, so that the sealing cover 151 can be in sealing contact with the body 1, so that the electro-hydraulic push rod 152 pushes the sealing cover 151 to seal the detection tank 11 in the body 1, and then controls the drive motor 14 to drive the mounting plate 12 to rotate, so that the mounting plate 12 drives the valve to flip into the detection tank 11, and at this time controls the solenoid valve of the liquid inlet 111 to open, so that the external water vapor delivery pipeline delivers water vapor into the detection tank 11 through the air inlet 122. The air pressure sensor 114 in the detection tank 11 can monitor the gas pressure in the detection tank 11 in real time. When the gas pressure reaches the set value, the user can observe whether there are defects such as cracks and dents on the valve surface through the observation window 115 to judge the pressure resistance of the valve. On the other hand, when the gas pressure reaches the set value, the solenoid valve is controlled to close. If the valve is cracked, the water vapor in the detection tank 11 will enter the valve through the crack and then be discharged from the circular groove 131, the spring hose 132 and the air inlet 122. At this time, the air pressure in the detection tank 11 is reduced. Therefore, the user can judge whether the valve is damaged by observing whether the gas pressure detected by the air pressure sensor 114 is reduced in a short time, and then detect the pressure resistance of the valve.

[0044] As an embodiment of the present invention, a pressing plate 16 is provided in the detection groove 11 ; the pressing plate 16 is fixedly connected to the machine body 1 via a hydraulic push rod 161 ; the pressing plate 16 and the clamping plate 13 are both made of silicone rubber material.

[0045] As an embodiment of the present invention, an annular groove 17 is provided on the inner wall of the circular groove 131; an air film 171 is fixedly connected to the annular groove 17; an air channel 172 is provided in the splint 13; one end of the air channel 172 is connected to the annular groove 17, and the other end is connected to the spring hose 132.

[0046] As an embodiment of the present invention, a cavity 173 connected to the air duct 172 is provided inside the splint 13; one end of the cavity 173 is connected to the circular groove 131, and the other end is connected to the spring hose 132; a conversion plate 174 is slidingly and sealedly connected inside the cavity 173; a cylindrical groove 175 and an L-shaped groove 176 are provided on the inner wall of the conversion plate 174; the conversion plate 174 is connected to the lower end surface of the cavity 173 by a fixed spring 177; and an electromagnetic plate 178 is embedded in the bottom of the cavity 173.

[0047] During operation, the fuel tank valve of the automobile includes a three-way valve connected to the oil return pipe. In order to improve the detection range of the present invention and realize the detection of the three-way valve, the present invention provides a tightening plate 16. The user first places the three-way valve between the two clamping plates 13, and then controls the electromagnetic plate 144 to energize the adsorption connecting rod 141 to drive the vertical rod 123 to plug into the rotating ring 125, so that the driving motor 14 drives the rotating ring 125 through the connecting rod 141 to drive the screw 121 to rotate, so that the screw 121 drives the two clamping plates 13 to move closer to each other. The two clamping plates 13 clamp the three-way valve. At this time, the ports at both ends of the three-way valve are clamped by the two clamping plates 13, and the port in the middle faces upward. The control electromagnetic plate 144 is de-energized. At this time, the connecting spring 143 pushes the connecting rod 141 to drive the protrusion 145 to engage with the mounting plate 12. At this time, the control drive motor 14 drives the mounting plate 12 to rotate, so that the mounting plate 12 drives the three-way valve clamped by the clamping plates 13 to flip, so that the port in the middle of the three-way valve flips downward. At this time, the port in the middle of the three-way valve is in contact with the clamping plate 16. Directly opposite, control the operation of the hydraulic push rod 161, so that the hydraulic push rod 161 pushes the clamping plate 16 to contact the port in the middle of the three-way valve. Since the clamping plate 13 and the clamping plate 16 are made of silicone rubber material, the clamping plate 13 has good elasticity. When the clamping plate 13 clamps the valve, the clamping plate 13 contacts the valve port and forms a flexible fit. Similarly, the clamping plate 16 also flexibly fits with the port in the middle of the three-way valve, thereby filling the tiny gap and enhancing the sealing of the clamping plate 13 and the clamping plate 16 on the valve port. The splint 13 and the abutting plate 16 can effectively abut and seal the three ports of the three-way valve, and then the solenoid valve is controlled to open, and the external water pipeline is controlled to transport water into the detection tank 11. When the water overflows the three-way valve, the external nitrogen pipeline is controlled to transport nitrogen into the three-way valve. Since the middle port of the three-way valve is sealed to the abutting plate 16, the nitrogen transported to the three-way valve with sealing standards will not leak out. Therefore, the air tightness of the three-way valve can be detected by observing whether there are bubbles around the three-way valve.

[0048] Since the diameter of the valve in the automobile fuel tank pipeline is relatively small, when the valve diameter is smaller than the diameter of the circular groove 131, in order to facilitate the detection of the valve, the present invention provides an air film 171 so that the air film 171 can clamp the valve port inserted into the circular groove 131, thereby clamping and sealing the air film 171 and the outer wall of the valve, so that the nitrogen entering the circular groove 131 enters the valve under the obstruction of the air film 171, thereby enabling the present invention to effectively detect valves with smaller diameters, thereby effectively improving the practicality of the present invention.

[0049] When in use, the user places the valve with a smaller diameter between the two clamping plates 13, and then controls the driving motor 14 to drive the clamping plates 13 closer to each other until the circular groove 131 of the clamping plates 13 is aligned with the two ends of the valve. At this time, the driving motor 14 is controlled to drive the two valves to continue to move closer to each other so that the two ends of the valve are inserted into the circular groove 131. At this time, the electromagnetic plate 178 is energized so that the electromagnetic plate 178 can absorb the conversion plate 174 and squeeze the fixed spring 177 to descend, so that the conversion plate 174 drives the cylindrical groove 175 and the L-shaped groove 176 to descend synchronously, so that the conversion plate 174 with The L-shaped groove 176 on the dynamic surface is connected to the spring hose 132. At this time, the external nitrogen delivery pipeline is controlled to be delivered to the L-shaped groove 176 through the spring hose 132, so that the nitrogen entering the L-shaped groove 176 flows out through the port at the upper end of the conversion plate 174, so that the nitrogen fills the cavity 173 above the conversion plate 174. Since the annular groove 17 is connected to the cavity 173 through the air channel 172, the nitrogen at the upper end of the cavity 173 flows into the annular groove 17 through the air channel 172, so that the air film 171 in the annular groove 17 is inflated and bulged, causing the bulged air film 1 71 inserts the valve into the end wall of the circular groove 131 to wrap it. When the bulging air film 171 wraps the end wall of the valve tightly, the control electromagnetic plate 178 is powered off. At this time, the conversion plate 174 rises under the push of the restoring force of the fixed spring 177, so that the rising conversion plate 174 pushes the residual nitrogen in the cavity 173 into the air film 171, improving the fit between the air film 171 and the valve. As the conversion plate 174 rises, it drives the cylindrical groove 175 and the L-shaped groove 176 to rise. At this time, the L-shaped groove 176 is blocked by the inner wall of the cavity 173. The seal prevents the nitrogen in the air film 171 from leaking. When the conversion plate 174 contacts the upper end surface of the cavity 173, the cylindrical groove 175 on the surface of the conversion plate 174 communicates with the spring hose 132. At this time, the external nitrogen enters the cylindrical groove 175 through the spring hose 132 and flows into the circular groove 131 from the cylindrical groove 175. The nitrogen flowing into the circular groove 131 is blocked by the air film 171 and flows into the valve for sealing performance testing. Therefore, the present invention can effectively test valves of different diameters, thereby improving the practical application range of the present invention.

[0050] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the foregoing embodiments. The foregoing embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A multifunctional detection tool for the fuel tank valve of a new energy vehicle, characterized by: include: A machine body (1) is provided with a detection groove (11) at the upper end of the machine body (1); a mounting plate (12) is rotatably connected in the detection groove (11); two clamping plates (13) are slidably connected to the upper end of the mounting plate (12); a screw (121) is provided between the two clamping plates (13); the screw (121) is rotatably connected to the mounting plate (12); the two clamping plates (13) are spirally connected to the two ends of the screw (121); the threads at the two ends of the screw (121) are arranged in opposite directions; a liquid inlet (111) is provided on one side of the machine body (1) and is communicated with the detection groove (11); A drive motor (14) is mounted on one side of the machine body (1); the drive motor (14) is used to drive the mounting plate (12) to rotate; an air inlet (122) is provided at one end of the mounting plate (12) away from the drive motor (14); the air inlet (122) is connected to an external nitrogen delivery pipeline; a circular groove (131) is provided on the side wall of the clamping plate (13); the circular groove (131) and the air inlet (122) are connected via a spring hose (132); A connecting unit is installed in the mounting plate (12); the driving motor (14) drives the screw rod (121) to rotate via the connecting unit.

2. The multifunctional detection tool for the fuel tank valve of a new energy vehicle according to claim 1 is characterized in that: A mounting frame (15) is fixedly connected to one side of the machine body (1); a sealing cover (151) is provided between the mounting frame (15) and the mounting plate (12); the sealing cover (151) is sealedly connected to the machine body (1); and the sealing cover (151) and the mounting frame (15) are connected via an electro-hydraulic push rod (152).

3. The multifunctional detection tool for the fuel tank valve of a new energy vehicle according to claim 2 is characterized in that: The connecting unit comprises a connecting rod (141); a rectangular groove (142) is provided at the output end of the driving motor (14); the connecting rod (141) is slidably connected in the rectangular groove (142); the connecting rod (141) and the bottom of the rectangular groove (142) are connected via a connecting spring (143); an electromagnetic sheet (144) is embedded in the bottom of the rectangular groove (142); a protrusion (145) is fixedly connected to the surface of the connecting rod (141); and a slot (146) matching the protrusion (145) is provided at one end of the mounting plate (12) close to the connecting rod (141).

4. The multifunctional detection tool for the fuel tank valve of a new energy vehicle according to claim 3 is characterized by: The connecting unit further comprises a vertical rod (123); a groove (124) is provided inside the mounting plate (12); the vertical rod (123) is located in the groove (124); the vertical rod (123) is fixedly connected to an end of the connecting rod (141) away from the driving motor (14); a rotating ring (125) is rotatably connected in the groove (124); the rotating ring (125) is connected to the screw rod (121) through a transmission belt (126); a vertical groove (127) is provided at an end of the rotating ring (125) close to the vertical rod (123).

5. The multifunctional detection tool for the fuel tank valve of a new energy vehicle according to claim 4 is characterized in that: The inner wall of the detection groove (11) is inlaid with a heating resistance wire (112); the surface of the mounting plate (12) is inlaid with a temperature sensor (113) and an air pressure sensor (114); the side wall of the body (1) is provided with an observation window (115); and an acrylic plate (116) is fixedly connected to the inside of the observation window (115).

6. The multifunctional detection tool for the fuel tank valve of a new energy vehicle according to claim 5, characterized in that: A pressing plate (16) is provided in the detection groove (11); the pressing plate (16) is fixedly connected to the machine body (1) via a hydraulic push rod (161); the pressing plate (16) and the clamping plate (13) are both made of silicone rubber material.

7. The multifunctional detection tool for the fuel tank valve of a new energy vehicle according to claim 6, characterized in that: An annular groove (17) is provided on the inner wall of the circular groove (131); an air film (171) is fixedly connected in the annular groove (17); an air passage (172) is provided in the clamping plate (13); one end of the air passage (172) is communicated with the annular groove (17), and the other end is communicated with the spring hose (132).

8. The multifunctional detection tool for the fuel tank valve of a new energy vehicle according to claim 7, characterized in that: A cavity (173) communicating with the air passage (172) is provided inside the splint (13); one end of the cavity (173) is communicated with the circular groove (131), and the other end is communicated with the spring hose (132); a conversion plate (174) is slidably and sealedly connected inside the cavity (173); a cylindrical groove (175) and an L-shaped groove (176) are provided on the inner wall of the conversion plate (174); the conversion plate (174) is connected to the lower end surface of the cavity (173) via a fixed spring (177); and an electromagnetic plate (178) is embedded in the bottom of the cavity (173).

Images