Used in automobile fuel tank sealing test equipment

Abstract

The present invention relates to a sealing detection device for automobile fuel tanks, which includes a frame, a clamping device, a driving device and a controller; the driving device includes a lifting drive motor and a lifting mechanism; the lifting mechanism is composed of a lifting mechanism steering gear, a lifting mechanism steering connecting rod and a lifting screw; the lifting mechanism steering gear is fixedly installed on the upper rear end of the frame, one end of which is connected to the upper end of the lifting screw through the lifting mechanism steering connecting rod, and the other end of the lifting mechanism steering gear is matched and connected with the driving motor steering connecting rod; the lower end of the lifting screw is matched and connected with the clamping device; the clamping device includes a clamping frame, a clamping plate, a flipping motor, a connecting shaft and a transmission shaft; the controller is installed on the outside of the frame and is electrically connected to the lifting drive motor and the flipping motor. The present invention has reasonable and compact structural design, simple and convenient operation, safety and practicality, high detection efficiency, accurate and intuitive display of detection results, low use cost, and reliable blocking.

Description

Technical Field

[0001] The invention belongs to the technical field of fuel tank sealing detection, and relates to a fuel tank sealing detection device for automobiles. The fuel tank sealing detection device for automobiles has the advantages of simple and convenient operation, high detection efficiency, accurate detection results and intuitive display. Background Art

[0002] As an important component to ensure the continuous operation of the car, the fuel tank continuously provides fuel to the engine to ensure the stable operation of the engine. The sealing performance of the fuel tank is directly related to the mileage of the car. If the fuel tank leaks, it will not only reduce the mileage of the car's single tank of fuel and the fuel utilization rate, but also cause environmental pollution. The more serious is the safety hazard caused by the leakage. In addition, users need to frequently refill fuel, which is not only troublesome, but also increases the cost of use. At present, the existing methods for detecting the sealing of fuel tanks are basically water inspections, but the methods for detecting leaks are different. Some use a large transparent container to put the entire fuel tank in and press it tightly, and then fill the container with water until the water level is higher than the fuel tank, and then inflate the inside of the fuel tank. At this time, the place where bubbles appear is the leak. However, the disadvantage of this method is that the operator must go around the equipment to fully view all the surfaces of a fuel tank, and if a leak is found, it cannot be marked during the detection process. It can only be taken out after the fuel tank is inspected, but the operator may not be able to find the leak at this time. Another method is to first submerge the oil tank in water, then inject colored liquid into the tank and maintain pressure for a period of time, and then observe whether there is colored liquid leakage at the weld of the oil tank. The disadvantage of this method is that if the oil tank is large, it will take a lot of time to inject and extract the colored liquid into the tank, which will have a great impact on the detection efficiency. In addition, the oil tank cannot be rotated, and you still have to run around the tank to observe all the sides.

[0003] From the above, it can be seen that it is necessary to further improve the existing technology. Summary of the invention

[0004] The present invention aims to solve the problems of low detection efficiency and poor detection effect in the existing fuel tank sealing detection, and proposes a vehicle fuel tank sealing detection device which is simple and convenient to operate, has high detection efficiency, accurate detection results and intuitive display.

[0005] The present invention is achieved through the following technical solutions:

[0006] The above-mentioned equipment for detecting the sealing property of automobile fuel tanks comprises a frame and a clamping device installed on opposite sides of the frame in the transverse direction; the detection equipment also comprises a driving device and a controller installed on the frame; the driving device comprises a lifting driving motor and a lifting mechanism; the power output end of the lifting driving motor is connected to a driving motor steering gear through a coupling; both side ends of the driving motor steering gear are connected to a driving motor steering connecting rod and are connected to the lifting mechanism through the driving motor steering connecting rod; the lifting mechanism is composed of a lifting mechanism steering gear, a lifting mechanism steering connecting rod and a lifting screw rod; the lifting mechanism steering gear is fixedly installed on the frame, one end of which is connected to the lifting mechanism steering connecting rod and is matched and connected to one end of the lifting screw rod through the lifting mechanism steering connecting rod; the other end of the lifting mechanism steering gear is matched and connected to the driving motor steering connecting rod; The other end of the screw rod is matched and connected with the clamping device; the clamping device includes a clamping frame, a clamping disk, a flipping motor, a connecting shaft and a transmission shaft; the clamping frame has a pair of and is slidably installed on the opposite sides of the frame, and its upper part is matched and connected with the other end of the lifting screw rod; the clamping disk has a pair of and is installed on the opposite sides of the frame, respectively; a fixing rod is horizontally connected between the pair of clamping disks; the clamping disk located on one side of the frame is matched and connected with the clamping frame through the connecting shaft, and the clamping disk located on the other side of the frame is matched and connected with the clamping frame through the transmission shaft; the flipping motor is matched and installed on the upper part of the clamping frame located on the other side of the frame, and its power output end is matched and connected with the transmission shaft; the controller is installed on one side of the frame and is electrically connected to the lifting drive motor and the flipping motor.

[0007] The sealing detection equipment for automobile fuel tanks, wherein: one end of the connecting shaft is horizontally fixedly connected to the clamping disk located on the left side of the frame, and the other end is equipped with a connecting shaft belt seat bearing and is fixedly connected to the clamping frame located on the left side of the frame through the connecting shaft belt seat bearing; one end of the transmission shaft is horizontally fixedly connected to the clamping disk located on the right side of the frame, and the other end is equipped with a transmission shaft belt seat bearing and is fixedly connected to the clamping frame located on the right side of the frame through the transmission shaft belt seat bearing; a transmission shaft sprocket is also installed at the other end of the transmission shaft; the flip motor is installed on the upper part of the clamping frame located on the right side of the frame, and a flip motor transmission sprocket is installed at its power output end; the flip motor transmission sprocket is matched and connected with the transmission shaft sprocket through a transmission chain.

[0008] The sealing detection equipment for automobile fuel tanks, wherein: a connecting shaft adjustment ring is also installed at the other end of the connecting shaft; and a transmission shaft adjustment ring is also installed on the shaft body located between the transmission shaft sprocket and the transmission shaft seat bearing at the other end of the transmission shaft.

[0009] The sealing detection device for automobile fuel tanks, wherein: a quick rotating joint is installed on each side of the clamp plate located on the left side of the frame, and the quick rotating joint is connected to the air source through an air pipe.

[0010] The equipment for detecting the sealing property of automobile fuel tanks, wherein: the driving device and the lifting mechanism are matched and installed on the upper part of the frame; the lifting driving motor is fixedly installed on the top of the rear side of the frame; the lifting screw rod vertically passes through the upper part of the frame from top to bottom, and its upper end is matched and connected to the steering connecting rod of the lifting mechanism, and the lower end is matched and connected to the clamping frame; the steering gear of the lifting mechanism is fixedly installed on the upper part of the rear end of the frame; the fixing rod is horizontally connected between the front ends, between the rear ends and between the lower ends of a pair of the clamp plates; the adjusting rod is horizontally connected between the lower ends, between the middle parts of the rear ends and between the middle parts of the upper ends of a pair of the clamp plates.

[0011] The device for detecting the sealing of automobile fuel tanks, wherein: the detection device also includes a tightening device; the tightening devices are slidably installed in pairs on the fixed rod located between the front and rear ends of a pair of clamp disks, and the tightening device includes a sliding sleeve, a tightener, a steel frame, a rubber ring and a flexible binding belt; the sliding sleeve is slidably installed on the fixed rod located between the front and rear ends of a pair of clamp disks; the tightener is welded to the sliding sleeve on one side of the operating surface; one end of the steel frame is welded to the sliding sleeve on the fixed rod located between the front ends of a pair of clamp disks, and the other end is welded to the sliding sleeve on the fixed rod located between the rear ends of a pair of clamp disks; the rubber ring is sleeved on the steel frame; one end of the flexible binding belt is fastened to the tightener, and the other end passes through the rubber ring and goes around the outer side of the clamping device to form a closed loop and is finally fastened and fixed to the tightener.

[0012] The device for detecting the sealing property of a fuel tank of an automobile, wherein: the tightening device comprises a tightening bracket, a tightening rotating shaft, a tightening nut, a tightening ratchet and a ratchet pawl; the tightening bracket is fixed to the outer side surface of the sliding sleeve on one side of the operating surface; the tightening rotating shaft is hinged on the tightening bracket; the tightening nut is matched and fixed to one axial end of the tightening rotating shaft; the tightening ratchet shaft is matched and fixed to one axial end of the tightening rotating shaft; the ratchet pawl is matched and hinged to the upper part of the tightening bracket on one side of the tightening ratchet; the rubber ring is a plurality of rubber rings sleeved on the steel frame; the flexible binding belt is woven from polyester rope, the other end of which passes through a plurality of rubber rings in turn, wraps around the outer side of the clamping device once to form a closed loop and finally wraps around the rotating shaft, and the flexible binding belt can be gradually tightened by adjusting the tightening nut, and the tightening ratchet can be locked by the ratchet pawl to keep the flexible binding belt in a tightened state.

[0013] The equipment for detecting the sealing property of automobile fuel tanks, wherein: the frame comprises a base, supporting columns, a crossbeam, a protective plate and a slide rail; the base is placed on the ground and is a rectangular structure; there are five supporting columns, four of which are vertically fixed to the four corners of the base by fastening bolts, and the remaining one is vertically fixed to the middle section of the rear long side of the base by fastening bolts; the crossbeam is horizontally connected to the top ends of the supporting columns to connect and fix the five supporting columns; the protective plate is fixedly installed between two adjacent supporting columns; there are two groups of slide rails, one group of which is vertically installed on the inner side walls of the two supporting columns located on the left side of the frame, and the other group of which is vertically installed on the inner side walls of the two supporting columns located on the right side of the frame.

[0014] The sealing detection equipment for automobile fuel tanks, wherein: a maximum limit switch is provided on one side of the upper end of the slide rail, and a minimum limit switch is provided on one side of the lower end; a plurality of angle wheels are evenly arranged along the vertical direction on the front and rear sides of the clamping frame and are slidably connected with the slide rail through the angle wheels.

[0015] The device for detecting the sealing property of a fuel tank of an automobile, wherein: the controller comprises a power distribution cabinet and a button box electrically connected to the power distribution cabinet; the power distribution cabinet is mounted on the upper outer wall of the protective plate located on the left side of the frame; the button box is mounted on the outer wall of the supporting column located on the front side of the right end of the frame, and a control panel is provided on the button box, and control buttons and indicator lights are provided on the control panel.

[0016] Beneficial effects:

[0017] The present invention is used for the automobile fuel tank sealing detection equipment, which has a reasonable and compact structure design, simple operation, stable and reliable sealing performance, intuitive display of detection results, and clear indication of whether the detected product is qualified; by flipping the fixture, the operator can move within a very small range to detect the sealing conditions of all welds of the fuel tank in all directions without dead angles, reducing labor intensity while improving detection efficiency. The detection results are intuitive and reliable, and the outflow of defective products is more effectively prevented.

[0018] In addition to ensuring accurate and efficient oil tank air tightness testing, it also reduces the labor intensity of workers and greatly improves testing efficiency. Workers only need to stand on the operating table to observe all parts of the oil tank without running around. At the same time, the inside of the oil tank is filled with compressed air. After the test, there is no need to extract the gas inside, which saves testing time and a lot of mechanisms, making the equipment simpler and more compact, reducing the failure rate and easy to maintain. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1This is a schematic diagram of the structure of the vehicle fuel tank sealing detection device used in the present invention;

[0020] Figure 2 Another schematic diagram of the structure of the vehicle fuel tank sealing detection device of the present invention;

[0021] Figure 3 This is a front view of the sealing detection device for automobile fuel tanks of the present invention;

[0022] Figure 4 It is a top view of the sealing detection device for automobile fuel tank of the present invention;

[0023] Figure 5 It is a left side view of the sealing detection device for automobile fuel tank of the present invention;

[0024] Figure 6 It is a right side view of the sealing detection device for automobile fuel tank of the present invention;

[0025] Figure 7 It is a structural schematic diagram of a binding device for a vehicle fuel tank sealing detection device of the present invention;

[0026] Figure 8 It is a front view of the binding device used for the automobile fuel tank sealing detection equipment of the present invention;

[0027] Fig. 9 The present invention is a schematic structural diagram of a tightener of a tightening device used in a vehicle fuel tank sealing detection device. DETAILED DESCRIPTION

[0028] The present invention will be further described below in conjunction with the accompanying drawings. The directional words such as "front, back, left, right, up, down" etc. involved in the text are all related to the accompanying drawings. Figure 3 and attached Figure 8 The structures in the are in the same direction.

[0029] like Figures 1 to 9 As shown, the present invention is used for automobile fuel tank sealing detection equipment, including a frame 1, a driving device 2, a clamping device 3, a binding device 4 and a controller 5.

[0030] The frame 1 includes a base 11, support columns 12, a crossbeam 13, a protective plate 14 and a slide rail 15. The base 11 is placed on the ground and is a rectangular structure formed by shearing, bending and welding a 5MM thick 304 stainless steel plate. There are five support columns 12, four of which are vertically fixed to the four corners of the base 11 by fastening bolts, and the remaining one is vertically fixed to the middle section of the rear long side of the base 11 by fastening bolts. The crossbeam 13 is horizontally connected to the top of the support column 12 to connect and fix the five support columns 12; the support column 12 and the crossbeam 13 are both made of 25# channel steel. The protective plate 14 is fixedly installed between two adjacent support columns 12. The slide rails 15 have two groups, one group of slide rails 15 is vertically matched and installed on the inner walls of the two supporting columns 12 located on the left side of the frame 1, and the other group of optical axes is vertically matched and installed on the inner walls of the two supporting columns 12 located on the right side of the frame 1; each group of slide rails 15 is composed of two vertically arranged optical axes; a maximum limit switch is set on the side of the upper end of one of the optical axes, and a minimum limit switch is set on the side of the lower end; the maximum limit switch and the minimum limit switch limit the highest position to which the transmission device 3 can be lifted and the lowest position to which it can be lowered, preventing the operator from mistakenly lifting the transmission device 3 too high or lowering it too low, causing it to hit the equipment frame and cause an accident.

[0031] The driving device 2 is installed on the upper part of the crossbeam 13 at the rear side of the frame 1, and includes a lifting drive motor 21 and a lifting mechanism 22. The lifting drive motor 21 is fixedly installed on the top of the support column 12 at the rear side of the frame 1, and its power output end is connected to a driving motor steering gear 211 through a coupling 210, and the left and right side ends of the driving motor steering gear 211 are both connected to a driving motor steering connecting rod 212 and connected to the lifting mechanism 22 through the driving motor steering connecting rod 212. The lifting mechanism 21 has a pair of lifting mechanisms 21 which are respectively vertically mounted at the center of the upper part of the beam 13 located on the left and right sides of the frame 1; the pair of lifting mechanisms 22 are composed of a lifting mechanism steering gear 221, a lifting mechanism steering connecting rod 222 and a lifting screw 223; the lifting mechanism steering gears 221 of the pair of lifting mechanisms 22 are respectively fixedly mounted on the upper rear end of the beam 13 located on the left and right sides of the frame 1; one end of each lifting mechanism steering gear 221 is connected to the lifting mechanism steering connecting rod 222 and matched with the upper end of the lifting screw 223 through the lifting mechanism steering connecting rod 222, and the other end is matched with the driving motor steering connecting rod 212 at one end of the driving motor steering gear 211; the lifting screw 223 vertically passes through the beam 13 of the frame 1 and the lower end passes through the lower side of the beam 13, and the lower end of the lifting screw 223 is connected to the clamping device 3 through the connecting earring 224.

[0032] The clamping device 3 is matched and installed on the left and right sides of the frame 1, and includes a clamping frame 31, a flip motor 32, a clamping plate 33, a connecting shaft 34, a transmission shaft 35, a fixing rod 36 and an adjusting rod 37.

[0033] The clamping frame 31 has a pair of slide rails 15 respectively slidably mounted on the left and right sides of the frame 1; the top of each clamping frame 31 is matched and connected with the earring 224 at the lower end of the lifting screw rod 223 of the lifting mechanism 22, and a plurality of angle wheels 311 are evenly arranged on the front and rear sides along the vertical direction and are slidably connected with the slide rails 15 of the frame 1 through the angle wheels 311, so that the clamping frame 31 can and can only move vertically up and down under the action of the lifting screw rod 223 of the lifting mechanism 22.

[0034] The turning motor 32 is installed on the upper part of the clamping frame 31 located on the right side of the frame 1, and a turning motor driving sprocket 321 is installed at the power output end of the turning motor 32.

[0035] The clamp plate 33 has a pair of plates located on the left and right sides of the frame 1, and a quick rotating joint is installed on each side of the clamp plate 33 located on the left side of the frame 1. The quick rotating joint is connected to the air source through an air pipe. This design can prevent the air pipe from being entangled when the clamping frame 31 of the clamping device 3 rotates, thereby affecting the air tightness detection.

[0036] One end of the connecting shaft 34 is horizontally fixedly connected to the middle of the left side surface of the clamping plate 33 located on the left side of the frame 1, and the other end is installed with a pair of connecting shaft belt seat bearings 341 and is fixedly connected to the clamping frame 31 located on the left side of the frame 1 through a pair of connecting shaft belt seat bearings 341; wherein, a connecting shaft adjustment ring 342 is also installed at the other end of the connecting shaft 34.

[0037] One end of the transmission shaft 35 is horizontally fixedly connected to the middle of the right side surface of the clamp disk 33 located on the right side of the frame 1, and a pair of transmission shaft belt seat bearings 351 are installed on the middle section of the shaft body and are fixedly connected to the clamping frame 31 located on the right side of the frame 1 through a pair of transmission shaft belt seat bearings 351; wherein, a transmission shaft sprocket 352 is installed at the other end of the transmission shaft 35, and the transmission shaft sprocket 352 is matched and connected with the flip motor transmission sprocket 321 on the power output end of the flip motor 32 through a transmission chain 38; a transmission shaft adjustment ring 353 is also installed on the shaft body located at the other end of the transmission shaft 35 between the transmission shaft sprocket 352 and the transmission shaft belt seat bearing 351.

[0038] The fixing rods 36 have three parts, one of which is horizontally fixedly connected between the front ends of a pair of clamp plates 33, another is horizontally fixedly connected between the rear ends of a pair of clamp plates 33, and the remaining one is horizontally fixedly connected between the lower ends of the pair of clamp plates 33; the two ends of each fixing rod 36 respectively extend to the outer sides of the rear ends of a pair of clamp plates 33 and the extended ends are locked and fixed to the clamp plates 33 through external hexagonal nuts 361, spring washers and flat washers.

[0039] The adjusting rods 37 have four parts, two of which are horizontally connected between the lower ends of a pair of clamping plates 33 and are located on the front and rear sides of the fixing rod 36, another one is horizontally connected between the middle parts of the rear ends of the pair of clamping plates 33, and the remaining one is horizontally connected between the middle parts of the upper ends of the pair of clamping plates 33; both ends of each adjusting rod 37 extend to the outside of a pair of clamping plates 33 and the extended end is fixed to the clamping plate 33 through a fixing block 371.

[0040] The binding devices 4 are connected in pairs between two fixing rods 36 located at the front and rear ends of a pair of clamping plates 33 of the clamping device 3 (that is, the binding devices 4 are connected between the two fixing rods 36 arranged opposite to each other in the front and rear between the pair of clamping plates 33); each binding device 4 includes a sliding sleeve 41, a tightener 42, a steel frame 43, a rubber ring 44 and a flexible binding belt 45.

[0041] The sliding sleeves 41 are made of a steel cylinder with a steel ball copper bushing, and are slidably mounted in pairs on two fixing rods 36 located between the front and rear ends of a pair of clamp plates 33 .

[0042] The tightener 42 is a rope tightening device, which is welded on the sliding sleeve 41 on one side of the operating surface, so as to facilitate the operator to loosen and tighten the flexible binding belt 45. The tightener 42 includes a tightening bracket 421, a tightening rotating shaft 422, a tightening nut (not shown in the figure), a tightening ratchet 423 and a ratchet pawl 424; the tightening bracket 421 has a pair of outer sides of the sliding sleeve 41 fixedly arranged on one side of the operating surface in parallel with each other; the tightening rotating shaft 422 is connected between the pair of tightening brackets 421 and the two axial ends extend outwardly of the pair of tightening brackets 421 respectively; the tightening nut is installed at one axial end of the tightening rotating shaft 422 extending outwardly of one of the tightening brackets 421; the tightening ratchet 423 is installed at the other axial end of the tightening rotating shaft 422 extending outwardly of the other tightening bracket 421; the ratchet pawl 424 is matched and hinged to the upper part of the tightening bracket 421 on one side of the tightening ratchet 423.

[0043] The steel frame 43 is U-shaped, one end of which is welded to the upper part of the sliding sleeve 41 on a fixed rod 36 located at the front end of a pair of clamp plates 33, and the other end is welded to the upper part of the sliding sleeve 41 on the fixed rod 36 located at the rear end of the pair of clamp plates 33, so that the two sliding sleeves 41 are connected together through the steel frame 43 and move in conjunction with the steel frame 43.

[0044] The rubber ring 44 is a plurality of rubber rings 44 mounted on the steel frame 43; the flexible strap 45 is woven from polyester rope and is 38MM wide, one end of which is fastened to the tightening device 42, and the other end passes through the plurality of rubber rings 44 on the steel frame 43 in turn, wraps around the outside of the clamping device 3 for one circle to form a closed loop and wraps back to the rotating shaft 421 of the tightening device 42. The flexible strap 45 can be gradually tightened by adjusting the tightening nut of the tightening device 42 with a ratchet wrench. When it is tightened to an appropriate degree, the tightening ratchet 423 is locked by the ratchet pawl 424, and the flexible strap 45 will remain in this state until the ratchet pawl 424 is unlocked.

[0045] The controller 5 is installed on the outside of the rack 1, and includes a distribution cabinet 51 and a button box 52; wherein the distribution cabinet 51 is installed on the upper outer wall of the protective plate 14 on the left side of the rack 1; the button box 52 is installed on the front side of the supporting column 12 at the right end of the front side of the rack 1, and the button box 52 has a control panel on it, and the control panel is provided with control buttons and indicator lights.

[0046] Working principle of the present invention:

[0047] First, operate the button box to lift the transmission device 3 to the upper surface of the water tank, and the operator uses a special handling tool to put the oil tank 6 to be inspected into the clamping frame 31, then slide the binding device 4 and adjust it to a suitable position. The distance between the two binding devices 4 cannot be greater than the length of the oil tank 6; then wrap the flexible binding belt 45 on the binding device 4 around the oil tank 6 and tighten it with the tightener 42 to fix the oil tank 6; next, operate the button box 42 to control the lifting mechanism 22 to sink the clamping frame 31 into the water tank, and at the same time, inflate the inside of the oil tank 6; a slide rail is welded on the inner wall of the water tank near the four corners, and the clamping frame 31 is clamped on the slide rail 15 through the corner wheel 311, so that when the lifting mechanism 22 lifts or lowers the transmission device 3, the slide rail 15 will ensure The transmission device 3 moves up and down in the vertical direction, and the movement direction of the transmission device 3 will not be disrupted by the disturbance of water waves in the water tank; when the oil tank 6 is completely submerged in water, the internal pressure of the oil tank 6 can be judged by the pressure gauge. When the pressure gauge shows that it reaches the required value, the pressure is maintained, and it is observed whether there are bubbles at the weld on the surface of the oil tank 6; for the parts of the lower bottom surface of the oil tank 6 that are not convenient to observe, the button box 52 can be operated to rotate the clamping frame 31 to a certain angle and keep the posture for observation until all the welding parts of the oil tank 6 are checked; if there are bubbles leaking, the leaking part can be marked, and the oil tank 6 can be returned to the welding station for repair after the inspection is completed; if there is no bubble leakage, it indicates that the product is qualified, and the oil tank 6 is moved down from the table to the qualified area with special tools.

[0048] The operation process of the binding device 4 of the present invention is as follows:

[0049] First, operate the button to lift the fuel tank clamping device to the upper surface of the water tank, and the operator uses a special handling tool to put the fuel tank to be inspected into the clamping device, then slide the binding device 4 and adjust it to a suitable position. The distance between the two binding devices 4 cannot be greater than the length of the fuel tank; then the flexible binding strap 45 on the binding device 4 is wrapped around the fuel tank and tightened with the tightener 42, and the flexible binding strap 45 is tightly fitted to the surface of the fuel tank through the ratchet wrench. When the flexible binding strap 45 is stretched into place, the prefabricated iron tongue and the gear are locked to prevent the flexible binding strap 45 from loosening by itself under the action of tension. At this point, the fuel tank is fixed; fixing with this method is convenient, time-saving, and labor-saving, and the fuel tank is reliably fastened and will not loosen during the inspection process; when the fuel tank inspection is completed, the iron tongue is unlocked, and the flexible binding strap 45 automatically loosens under the action of its own tension, and the operator slides the binding device 4 open to take out the fuel tank.

[0050] In addition to ensuring accurate and efficient oil tank air tightness detection, the present invention also reduces the labor intensity of workers and greatly improves detection efficiency. Workers only need to stand on the operating table to observe all parts of the oil tank without running around. At the same time, the inside of the oil tank is filled with compressed air, and there is no need to extract the gas inside after the detection is completed, which saves detection time and a lot of mechanisms, making the equipment simpler and more compact, reducing the failure rate and easy to maintain.

Claims

1. A device for testing the sealing performance of a fuel tank of an automobile, comprising a frame and clamping devices installed on opposite sides of the frame; characterized in that: The detection device also includes a drive device and a controller mounted on the frame; The driving device comprises a lifting drive motor and a lifting mechanism; the power output end of the lifting drive motor is connected to a driving motor steering gear through a coupling; both side ends of the driving motor steering gear are connected to a driving motor steering connecting rod and are connected to the lifting mechanism through the driving motor steering connecting rod; the lifting mechanism is composed of a lifting mechanism steering gear, a lifting mechanism steering connecting rod and a lifting screw; the lifting mechanism steering gear is fixedly mounted on the frame, one end of which is connected to the lifting mechanism steering connecting rod and is matched and connected to one end of the lifting screw through the lifting mechanism steering connecting rod; the other end of the lifting mechanism steering gear is matched and connected to the driving motor steering connecting rod; the other end of the lifting screw is matched and connected to the clamping device; The frame is provided with two sets of slide rails; the slide rails are located on the left and right sides of the frame and are respectively fixed on the inner wall of the water tank near the four corners; The camming device comprises a clamping frame, a clamping plate, a flipping motor, a connecting shaft and a transmission shaft; the clamping frame has a pair of and are slidably mounted on opposite sides of the frame, and the upper portion of the clamping frame is matched and connected with the other end of the lifting screw rod; the front and rear sides of the clamping frame are evenly provided with a plurality of angle wheels in the vertical direction and are slidably connected with a pair of slide rails of the frame through the angle wheels; the clamping plate has a pair of and are respectively mounted on the clamping frames on opposite sides of the frame; a fixing rod is horizontally connected between the pair of clamping plates; the clamping plate located on one side of the frame is matched and connected with the clamping frame through the connecting shaft, and the clamping plate located on the other side of the frame is matched and connected with the clamping frame through the transmission shaft; the flipping motor is matched and mounted on the upper part of the clamping frame located on the other side of the frame, and its power output end is matched and connected with the transmission shaft; The controller is installed on one side of the frame and is electrically connected to the lifting drive motor and the flip motor; One end of the connecting shaft is horizontally fixedly connected to the clamping plate located on the left side of the frame, and the other end is installed with a connecting shaft seat bearing and is fixedly connected to the clamping frame located on the left side of the frame through the connecting shaft seat bearing; One end of the transmission shaft is horizontally fixedly connected to the clamping plate located on the right side of the frame, and the other end is equipped with a transmission shaft seat bearing and is fixedly connected to the clamping frame located on the right side of the frame through the transmission shaft seat bearing; a transmission shaft sprocket is also installed at the other end of the transmission shaft; The flip motor is installed on the upper part of the clamping frame located on the right side of the frame, and a flip motor transmission sprocket is installed at its power output end; the flip motor transmission sprocket is matched and connected with the transmission shaft sprocket through a transmission chain; The other end of the connecting shaft is also equipped with a connecting shaft adjusting ring; the other end of the transmission shaft is located between the transmission shaft sprocket and the transmission shaft belt seat bearing and is also equipped with a transmission shaft adjusting ring; The driving device and the lifting mechanism are matched and installed on the upper part of the frame; The lifting drive motor is fixedly mounted on the top of the rear side of the frame; the lifting screw rod vertically passes through the upper part of the frame from top to bottom, and its upper end is matched with the lifting mechanism steering connecting rod, and its lower end is matched with the clamping frame; the lifting mechanism steering gear is fixedly mounted on the upper rear end of the frame; The fixing rods are horizontally connected between the front ends, rear ends and lower ends of a pair of the clamp plates; and the adjusting rods are horizontally connected between the lower ends, the middle parts of the rear ends and the middle parts of the upper ends of a pair of the clamp plates.

2. The sealing detection device for automobile fuel tank according to claim 1, characterized in that: A quick rotating joint is respectively installed on both sides of the fixture plate located on the left side of the frame, and the quick rotating joint is connected to the air source through an air pipe.

3. The sealing detection device for automobile fuel tank according to claim 1, characterized in that: The detection equipment also includes a binding device; the binding devices are slidably installed in pairs on the fixed rod located between the front and rear ends of a pair of clamp disks, and the binding device includes a sliding sleeve, a tightener, a steel frame, a rubber ring and a flexible binding belt; the sliding sleeve is slidably installed on the fixed rod located between the front and rear ends of a pair of clamp disks; the tightener is welded to the sliding sleeve on one side of the operating surface; one end of the steel frame is welded to the sliding sleeve on the fixed rod between the front ends of a pair of clamp disks, and the other end is welded to the sliding sleeve on the fixed rod between the rear ends of a pair of clamp disks; the rubber ring is sleeved on the steel frame; one end of the flexible binding belt is fastened to the tightener, and the other end passes through the rubber ring and goes around the outside of the clamping device to form a closed loop and is finally fastened and fixed to the tightener.

4. The sealing detection device for automobile fuel tank according to claim 3, characterized in that: The tightening device comprises a tightening bracket, a tightening rotating shaft, a tightening nut, a tightening ratchet and a ratchet pawl; the tightening bracket is fixed to the outer side surface of the sliding sleeve on one side of the operating surface; the tightening rotating shaft is hinged on the tightening bracket; the tightening nut is matched and fixed to one axial end of the tightening rotating shaft; the tightening ratchet shaft is matched and fixed to one axial end of the tightening rotating shaft; the ratchet pawl is matched and hinged to the upper part of the tightening bracket on one side of the tightening ratchet; The rubber bands are multiple and are sleeved on the steel frame; the flexible binding belt is woven from polyester rope, and the other end of the flexible binding belt passes through the multiple rubber bands in sequence, wraps around the outside of the clamping device once, forms a closed loop and is finally wrapped around the rotating shaft. The flexible binding belt can be gradually tightened by adjusting the tightening nut, and the tightening ratchet can be locked by the ratchet pawl to keep the flexible binding belt in a taut state.

5. The sealing detection device for automobile fuel tank according to claim 1, characterized in that: The frame includes a base, supporting columns, crossbeams, protective plates and slide rails; the base is placed on the ground and has a rectangular structure; there are five supporting columns, four of which are vertically fixed to the four corners of the base by fastening bolts, and the remaining one is vertically fixed to the middle section of the rear long side of the base by fastening bolts; the crossbeams are horizontally connected to the top ends of the supporting columns to connect and fix the five supporting columns; the protective plate is fixedly installed between two adjacent supporting columns; there are two groups of slide rails, one group of which is vertically installed on the inner side walls of the two supporting columns located on the left side of the frame, and the other group of which is vertically installed on the inner side walls of the two supporting columns located on the right side of the frame.

6. The sealing detection device for automobile fuel tank according to claim 5, characterized in that: A maximum limit switch is arranged on one side of the upper end of the slide rail, and a minimum limit switch is arranged on one side of the lower end of the slide rail.

7. The sealing detection device for automobile fuel tank according to claim 5, characterized in that: The controller includes a power distribution cabinet and a button box electrically connected to the power distribution cabinet; the power distribution cabinet is installed on the upper outer wall of the protective plate located on the left side of the rack; the button box is installed on the outer wall of the supporting column located on the front side of the right end of the rack, and the button box has a control panel on it, and the control panel is provided with control buttons and indicator lights.

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