A gas tightness detection device for automobile fuel tank

Abstract

The present invention relates to the technical field of fuel tank detection, and specifically to an air tightness detection device for a fuel tank of an automobile, comprising a water pool, a V-shaped chute provided in the water pool, a reciprocating transmission component installed in the water pool, a clamping component installed on the reciprocating transmission component, and a placement plate installed in the water pool. When the present invention performs air tightness detection on the fuel tank, two clamping components can be driven to move synchronously by a reciprocating drive component, wherein one group of clamping components clamps the fuel tank on the placement plate on one side and conveys it along the V-shaped chute, so that the fuel tank is gradually immersed in the water surface of the water pool for air tightness detection, while the other group of detected fuel tanks are conveyed to the placement plate on the other side driven by the reciprocating drive component and the fuel tanks are released, and then after draining for a period of time, the staff can take away the detected fuel tanks and place new fuel tanks to wait for detection, so that the fuel tanks can be detected reciprocally and uninterruptedly, thereby improving the detection efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of oil tank detection, in particular to an air tightness detection device for an automobile oil tank. Background Art

[0002] After the traditional fuel tank production is completed, it is often necessary to test the air tightness of the fuel tank to ensure that the fuel tank meets the requirements. The existing testing method requires the staff to first fix the fuel tank on the lifting fixture, then vacuum the fuel tank and then send the fuel tank into the pool through the lifting fixture so that the fuel tank is submerged in water, and then observe whether there are bubbles around the fuel tank to determine whether the air tightness of the fuel tank meets the standard. After the test is completed, the fuel tank is removed and replaced with the next group of fuel tanks to be tested. The detection efficiency of this detection method is low, and it needs to be stopped for replacement after each test. For this reason, the present invention has developed an air tightness detection device for automobile fuel tanks to solve the above problems. Summary of the invention

[0003] The purpose of the present invention is to provide an air tightness detection device for an automobile fuel tank, which can improve the detection efficiency of the fuel tank air tightness detection.

[0004] To achieve the above object, the first technical solution provided by the present invention is:

[0005] An air tightness detection device for an automobile fuel tank comprises a water pool, wherein two opposite side walls of an inner cavity of the water pool are symmetrically provided with V-shaped slide grooves, and the opposite ends of the V-shaped slide groove are arranged as horizontal sections, a reciprocating transmission component for transmitting the fuel tank is installed on the side wall of the water pool, two clamping components for clamping the fuel tank are installed on the reciprocating transmission component, and the two clamping components are both slidably connected with the V-shaped slide groove, and placement plates for placing the fuel tank are symmetrically installed at opposite ends of the inner cavity of the water pool, and when the reciprocating transmission component drives a clamping component to clamp a fuel tank from a placement plate and transport it to the middle section of the V-shaped slide groove, another clamping component transports another fuel tank from the middle section of the V-shaped slide groove to another placement plate and releases the fuel tank;

[0006] The clamping components each include two mounting seats connected to the reciprocating transmission component, and the two mounting seats are symmetrically arranged on opposite sides of the water pool, the mounting seats are penetrated by a mounting groove, a mounting block is slidably connected in the mounting groove, a screw rod is penetrated and rotatably connected to the mounting block, the ends of the two screw rods close to each other are symmetrically threadedly connected to threaded sleeves, the ends of the threaded sleeves close to each other are symmetrically installed with clamping plates, the ends of the two screw rods away from each other are rotatably connected to a sliding block that cooperates with the V-shaped groove, the outer wall of the screw rod is fixedly connected to a first rotating gear, and the first rotating gear is located between the mounting block and the slider, a retractable first limiting rod is installed between the clamping plate and the mounting block, and racks that cooperate with the first rotating gear are installed at opposite ends of the inner walls on opposite sides of the water pool, and the racks are located above the horizontal section of the V-shaped groove.

[0007] Preferably, a second limiting rod cooperating with the mounting block is installed between the top and the bottom of the inner cavity of the mounting groove.

[0008] Preferably, the reciprocating conveying assembly includes belt conveyors symmetrically mounted on opposite side walls of the pool, the two mounting seats of the two clamping assemblies are symmetrically mounted on the belts of the two belt conveyors, and a reciprocating driving member is connected between the two belt conveyors.

[0009] Preferably, limit rails are symmetrically installed on the tops of the two opposite side walls of the pool, and the mounting seat is equipped with limit sliding blocks that cooperate with the limit rails.

[0010] Preferably, the belt transmission member comprises three first mounting plates, and the three first mounting plates are arranged in a V-shape, the three first mounting plates are rotatably connected to pulleys, and belts are connected between the three pulleys;

[0011] The reciprocating drive member includes a driving motor installed under the pool, an incomplete bevel gear is fixedly connected to the output end of the driving motor, a first rotating rod and a second rotating rod are rotatably connected between the two first mounting plates located below, and the first rotating rod is connected to two pulleys located below, two second rotating gears are symmetrically fixedly connected to the outer wall of the first rotating rod, a transition gear meshing with the second rotating gear is symmetrically fixedly connected to the outer wall of the second rotating rod, two first bevel gears are fixedly connected to the outer wall of the second rotating gear, and the incomplete bevel gear is located below between the two first bevel gears and meshing with the two first bevel gears in sequence.

[0012] Preferably, two shaking components are symmetrically fixed at two opposite ends of the water pool, and the two shaking components are respectively connected to the placement plate on the same side;

[0013] The shaking assembly includes a second mounting plate symmetrically installed on the opposite side walls of the pool, a double-headed screw is rotatably connected between the two second mounting plates, and the thread grooves at the opposite ends of the double-headed screw are reciprocating thread grooves set in the same direction, the two ends of the double-headed screw are symmetrically threaded with connecting rods, and one end of the two connecting rods are inserted into the pool and connected to the placement plate, a worm gear is fixedly connected to the middle position of the double-headed screw, a worm is meshedly connected to the bottom of the worm gear, a second bevel gear is fixedly connected to one end of the worm, and the two second bevel gears are respectively located on both sides above the incomplete bevel gear, the incomplete bevel gear is meshedly connected to the two first bevel gears and the two second bevel gears in turn, and a fixing block for fixing the worm is installed at the bottom of the pool.

[0014] Preferably, the side walls at opposite ends of the water pool are provided with through grooves that cooperate with the connecting rods.

[0015] Preferably, hinge blocks are symmetrically installed on two opposite sides of one end of the placement plate away from the side wall of the pool, a mounting rod is rotatably connected between the two hinge blocks, a baffle is fixedly connected to the outer wall of the mounting rod, torsion springs are symmetrically installed on the outer walls at both ends of the mounting rod, and the two ends of the torsion spring are respectively connected to the side wall of the baffle and the hinge block, and the height of the baffle is less than the length of the hinge block.

[0016] Preferably, a plurality of drainage holes are provided at the bottom of the placement plate.

[0017] Preferably, the bottom of the placement plate is a hollow structure, and a plurality of rotating shafts are rotatably connected between the two opposite side walls of the bottom of the placement plate. A plurality of rollers are fixedly connected to the outer walls of the rotating shafts, and the rolling direction of the rollers is consistent with the conveying direction of the reciprocating conveying assembly.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] When the present invention performs air tightness test on the oil tank, the reciprocating drive assembly can drive the two clamping assemblies to move synchronously, one group of clamping assemblies clamps the oil tank on the placement plate on one side and conveys it along the V-shaped groove, so that the oil tank is gradually immersed in the water surface of the pool for air tightness test, while the other group of tested oil tanks are conveyed to the placement plate on the other side under the drive of the reciprocating drive assembly and the oil tanks are released, and then after draining for a period of time, the staff can take away the tested oil tanks and place new oil tanks to wait for testing, so that the oil tanks are tested reciprocally and continuously, thereby improving the testing efficiency, and the entire testing process can realize automatic conveying, clamping and lifting of the oil tanks through the cooperation of the reciprocating drive assembly and the V-shaped groove, thereby reducing the labor intensity of the staff and the cost of equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0021] Figure 1 It is a schematic structural diagram of the detection device of the present invention in the case of embodiment 1;

[0022] Figure 2 It is a front view structural schematic diagram of the detection device of the present invention;

[0023] Figure 3 It is a schematic diagram of the front cross-section structure of the detection device of the present invention;

[0024] Figure 4 It is a schematic diagram of the side structure of the detection device of the present invention;

[0025] Figure 5 It is a schematic diagram of the side section structure of the detection device of the present invention;

[0026] Figure 6 for Figure 5 A schematic diagram of the structure enlargement at the center A;

[0027] Figure 7 It is a structural schematic diagram of a clamping assembly in the detection device of the present invention;

[0028] Figure 8 It is a schematic diagram of the structure of the placement plate in the detection device of the present invention;

[0029] Fig. 9 It is a schematic diagram of the structure of the driving assembly and its connecting parts in the detection device of the present invention;

[0030] Fig.10 It is a schematic diagram of the structure of the detection device of the present invention in the second embodiment.

[0031] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0032] 1. Water tank; 11. V-shaped slide; 12. Rack; 13. Limiting slide rail; 2. Reciprocating transmission assembly; 21. Belt transmission member; 211. First mounting plate; 212. Pulley; 213. Belt; 22. Reciprocating drive member; 221. Driving motor; 222. Incomplete bevel gear; 223. First rotating rod; 224. Second rotating rod; 225. Second rotating gear; 226. Transition gear; 227. First bevel gear; 3. Clamping assembly; 31. Mounting seat; 311. Limiting slider; 32. Mounting slot; 33. Mounting block; 34. Wire Rod; 35, threaded sleeve; 36, splint; 37, slider; 38, first rotating gear; 39, first limiting rod; 310, second limiting rod; 4, placement plate; 41, hinge block; 42, mounting rod; 43, baffle; 44, torsion spring; 45, rotating shaft; 46, roller; 5, shaking assembly; 51, second mounting plate; 52, double-headed screw; 53, connecting rod; 54, worm gear; 55, worm; 56, second bevel gear; 6, pressurizing mechanism; 61, portal frame; 62, intake pipe; 63, rubber tube; 64, airbag; 65, electric cylinder. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] like Figure 1-9 As shown: Embodiment 1 of the present invention is:

[0035] like Figure 1 and 3 As shown: an air tightness detection device for an automobile fuel tank, comprising a water pool 1, V-shaped grooves 11 are symmetrically provided on opposite side walls of the inner cavity of the water pool 1, and opposite ends of the V-shaped groove 11 are set as horizontal sections, a reciprocating conveying assembly 2 for conveying the fuel tank is installed on the side wall of the water pool 1, two clamping assemblies 3 for clamping the fuel tank are installed on the reciprocating conveying assembly 2, and the two clamping assemblies 3 are slidably connected with the V-shaped groove 11, and placement plates 4 for placing the fuel tank are symmetrically provided at opposite ends of the inner cavity of the water pool 1, when the reciprocating conveying assembly 2 drives a clamping assembly 3 to clamp a fuel tank from a placement plate 4 and transport it to the middle section of the V-shaped groove 11, another clamping assembly 3 transports another fuel tank from the middle section of the V-shaped groove 11 to another placement plate 4 and releases the fuel tank;

[0036] like Figure 5 , 6As shown in Figure 7: The clamping assembly 3 includes two mounting seats 31 connected to the reciprocating transmission assembly 2, and the two mounting seats 31 are symmetrically arranged on opposite sides of the pool 1. The mounting seats 31 are penetrated with mounting grooves 32, and mounting blocks 33 are slidably connected in the mounting grooves 32. The mounting blocks 33 are penetrated and rotatably connected with screw rods 34. The ends of the two screw rods 34 close to each other are symmetrically threadedly connected with threaded sleeves 35. The ends of the threaded sleeves 35 close to each other are symmetrically installed with clamping plates 36. The ends of the two screw rods 34 away from each other are both rotatably connected with V-shaped The slide groove 11 cooperates with the slider 37, the outer wall of the screw rod 34 is fixedly connected with the first rotating gear 38, and the first rotating gear 38 is located between the mounting block 33 and the slider 37, a retractable first limiting rod 39 is installed between the clamping plate 36 and the mounting block 33, and a second limiting rod 310 that cooperates with the mounting block 33 is installed between the top and bottom of the inner cavity of the mounting groove 32, and racks 12 that cooperate with the first rotating gear 38 are installed at opposite ends of the inner walls on both sides of the pool 1, and the rack 12 is located above the horizontal section of the V-shaped slide groove 11.

[0037] like Figure 2 As shown: In this embodiment, the reciprocating conveying component 2 includes a belt conveyor 21 symmetrically installed on the opposite side walls of the pool 1, two mounting seats 31 of the two clamping components 3 are symmetrically installed on the belts of the two belt conveyors 21, and a reciprocating driving component 22 is connected between the two belt conveyors 21.

[0038] like Figure 5 and 7 As shown: In this embodiment, in order to reduce the force exerted by the mounting seat and the oil tank on the belt and ensure the normal operation of the belt, limit slide rails 13 are symmetrically installed on the top of the opposite side walls of the water tank 1, and the mounting seat 31 is equipped with a limit slider 311 that cooperates with the limit slide rail 13, wherein the mutual cooperation between the limit slide rail and the limit slider can support the mounting seat, so that the force exerted by the mounting seat and the oil tank will not be applied to the belt, thereby avoiding deformation of the belt and making the belt work stably.

[0039] like Figure 2 As shown: In this embodiment, in order to enable the belt conveyor to stably rotate back and forth, the belt conveyor 21 includes three first mounting plates 211, and the three first mounting plates 211 are arranged in a V shape, and the three first mounting plates 211 are rotatably connected to pulleys 212, and belts 213 are connected between the three pulleys 212;

[0040] like Figure 5 and 8As shown: the reciprocating drive member 22 includes a drive motor 221 installed below the pool 1, an incomplete bevel gear 222 is fixedly connected to the output end of the drive motor 221, a first rotating rod 223 and a second rotating rod 224 are rotatably connected between the two first mounting plates 211 located below, and the first rotating rod 223 is connected to the two pulleys 212 located below, two second rotating gears 225 are symmetrically fixedly connected to the outer wall of the first rotating rod 223, and a transition gear 226 meshing with the second rotating gear 225 is symmetrically fixedly connected to the outer wall of the second rotating rod 224. Two first bevel gears 227 are fixedly connected to the outer wall of the second rotating gear 225, and the incomplete bevel gear 222 is located below between the two first bevel gears 227 and is meshed with the two first bevel gears 227 in sequence, wherein the three pulleys are arranged in a V-shape so that the belt can also be arranged in a V-shape after installation, thereby improving the stability of the belt, and the incomplete bevel gears are meshed with the two first bevel gears in sequence to realize the forward and reverse reciprocating rotation of the belt transmission component and the reciprocating transportation of the oil tank, and the driving component using this structure can make the equipment structure simpler and reduce the equipment cost.

[0041] like Figure 3 , 4 , 8 and 9: In this embodiment, in order to improve the draining efficiency of the oil tank, two shaking components 5 are symmetrically fixed at opposite ends of the water pool 1, and the two shaking components 5 are respectively connected to the placement plate 4 on the same side;

[0042] The shaking assembly 5 includes a second mounting plate 51 symmetrically mounted on the opposite side walls of the pool 1, a double-headed screw 52 is rotatably connected between the two second mounting plates 51, and the thread grooves at the opposite ends of the double-headed screw 52 are reciprocating thread grooves arranged in the same direction of rotation, the two ends of the double-headed screw 52 are symmetrically threadedly connected with connecting rods 53, and one end of the two connecting rods 53 are inserted into the pool 1 and connected to the placement plate 4, a worm gear 54 is fixedly connected to the middle position of the double-headed screw 52, ​​a worm 55 is meshingly connected to the bottom of the worm gear 54, a second bevel gear 56 is fixedly connected to one end of the worm 55, and the two second bevel gears 56 are respectively located on both sides above the incomplete bevel gear 222, and the incomplete bevel gear 222 is meshingly connected with the two first bevel gears 227 and the two second bevel gears 56 in turn, a fixing block for fixing the worm 55 is installed at the bottom of the pool 1, and the side walls at the opposite ends of the pool 1 are provided with connecting rods 53 The incomplete bevel gear meshes with the second bevel gear of the next group, that is, the second bevel gear on the same side of the placement plate, thereby driving the worm to rotate, and then driving the worm wheel and the double-headed screw to rotate, and then driving the two connecting rods and the mounting plate to slide back and forth, so as to realize dynamic draining of the oil tank and improve the draining efficiency. After draining, the oil tank is removed and replaced, and then the incomplete bevel gear meshes with the first bevel gear of the next group, and the replaced oil tank is transported to the middle position for inspection, and the inspected oil tank is transported to the placement plate on the other side, and then the incomplete bevel gear meshes with the other group of second bevel gears, driving the placement plate and the oil tank on this side to shake, and so on and so forth, so as to realize uninterrupted inspection and efficient draining of the oil tank.

[0043] like Figure 8 As shown: In the present embodiment, in order to ensure that the oil tank does not fall during the draining process, hinge blocks 41 are symmetrically installed on the two sides of one end of the placement plate 4 away from the side wall of the pool 1, and a mounting rod 42 is rotatably connected between the two hinge blocks 41. A baffle 43 is fixedly connected to the outer wall of the mounting rod 42, and torsion springs 44 are symmetrically installed on the outer walls of the two opposite ends of the mounting rod 42, and the two ends of the torsion spring 44 are respectively connected to the side wall of the baffle 43 and the hinge block 41, and the height of the baffle 43 is less than the length of the hinge block 41. The baffle can be used to block the oil tank from falling when it is placed and drained, and the baffle can be flipped over by the oil tank under the action of the driving force during transportation, thereby realizing the transportation of the oil tank, and the setting of the torsion spring can make the baffle return automatically and provide a certain resistance.

[0044] like Figure 8As shown: In this embodiment, in order to further improve the drainage effect, the bottom of the placement plate 4 is a hollow structure, and a plurality of rotating shafts 45 are rotatably connected between the two opposite side walls of the bottom of the placement plate 4, and a plurality of rollers 46 are fixedly connected to the outer wall of the rotating shaft 45, and the rolling direction of the rollers 46 is consistent with the conveying direction of the reciprocating conveying assembly 2. During the drainage process, the water entrained in the oil tank can flow back into the pool along the gap between the rollers, and the setting of the rollers can reduce the resistance between the oil tank and the placement plate.

[0045] The specific working process of this embodiment is as follows:

[0046] When the oil tank is being inspected, the staff first evacuates the inside of the oil tank (or fills it with gas of a certain pressure), then covers it tightly and seals it, and then places it on two placement plates 4 (at the beginning of the inspection, one set of clamping components 3 is located above one placement plate 4, and the other set of clamping components 3 is located in the middle of the pool 1), and then starts the drive motor 221, the drive motor 221 drives the incomplete bevel gear 222 to rotate, the incomplete bevel gear 222 drives a set of first bevel gears 227 to rotate, the first bevel gear 227 drives the second rotating rod 224 and the transition gear 226 to rotate, thereby driving the second rotating gear 225 and the first rotating rod 223 to rotate, and then drives the pulleys 212 and belts 213 on both sides to rotate forward, thereby driving the clamping component 3 to slide forward, and during the forward sliding process of the clamping component 3, the first rotating gear on the clamping component 3 located above the placement plate 4 The wheel 38 gradually meshes with the rack 12, thereby driving the screw 34 to rotate, so that the threaded sleeve 35 and the clamping plate 36 slide under the action of the first limit rod 39, and clamp the two sides of the oil tank, and then continue to transport, and the slider 37 gradually descends along the V-shaped groove 11, so that the oil tank gradually sinks into the water surface, and the other group of clamping assemblies 3 gradually slides toward the placement plate 4 on the other side, and after one group of clamping assemblies 3 reaches the lowest position of the V-shaped groove 11, the other group of clamping assemblies 3 reaches the top of the placement plate 4, and then the incomplete bevel gear 222 disengages from the meshing with the first bevel gear 227, and gradually meshes with a group of second bevel gears 56, and drives the double-headed screw 52 to rotate through the worm 55 and the worm wheel 54, thereby driving the connecting rod 53 and the placement plate 4 to slide back and forth, causing the oil tank to shake, thereby realizing rapid draining of the oil tank and rapid replacement.

[0047] During the draining process, the oil tank submerged in the water is inspected in real time, and staff or underwater cameras observe whether there are bubbles around the oil tank, or test the pressure inside the oil tank after draining to see if there is any change.

[0048] Then start the driving motor 221, the driving motor 221 drives the incomplete bevel gear 222 to rotate, the incomplete bevel gear 222 drives a group of first bevel gears 227 to rotate, the first bevel gear 227 drives the second rotating rod 224 and the transition gear 226 to rotate, thereby driving the second rotating gear 225 and the first rotating rod 223 to rotate, and then driving the pulleys 212 and belts 213 on both sides to rotate forward, thereby driving the clamping assembly 3 to slide forward, and during the forward sliding process of the clamping assembly 3, the first rotating gear 38 on the clamping assembly 3 located above the placement plate 4 gradually engages with the rack 12, thereby driving the screw rod 34 to rotate, so that the threaded sleeve 35 and the clamping plate 36 slide under the action of the first limiting rod 39 and clamp the two sides of the oil tank, and then continue The oil tank is continuously transported, and the slider 37 gradually descends along the V-shaped slide groove 11, so that the oil tank is gradually submerged in the water surface, and the other group of clamping components 3 gradually transports the tested oil tank to the placement plate 4 on the other side. When it reaches above the placement plate 4, the first rotating gear 38 engages with the rack 12 in the opposite direction, driving the threaded sleeve 35 and the clamping plate 36 to retract, thereby placing the oil tank on the placement plate 4, and then the incomplete bevel gear 222 disengages from the engagement with the first bevel gear 227, and gradually engages with a group of second bevel gears 56, and drives the double-headed screw 52 to rotate through the worm 55 and the worm wheel 54, thereby driving the connecting rod 53 and the placement plate 4 to slide back and forth, causing the oil tank to shake, thereby realizing rapid draining of the oil tank, and so on and so forth, to achieve uninterrupted detection of the oil tank.

[0049] Please refer to Figure 2-10 As shown, the second embodiment of the present invention is:

[0050] The difference between this embodiment and the first embodiment is that: in this embodiment, a pressurizing mechanism 6 capable of automatically pressurizing is respectively installed on the top of the mounting seats 31 of the two clamping assemblies 3, and the pressurizing mechanism 6 includes a door frame 61 spanning the top of the two oppositely arranged mounting seats 31, and the top of the door frame 61 is penetrated by an air intake pipe 62 connected to an external pressure pump, and the air intake pipe 62 is a telescopic pipe, and the telescopic end of the air intake pipe 62 is connected to a telescopic rubber tube 63 installed on the top of the door frame 61, and the side wall of the rubber tube 63 is connected to and wrapped with an air bag 64, and an electric cylinder 65 is installed on the top of the door frame 61, and the electric cylinder 65 is connected to the telescopic end of the air intake pipe 62. The specific pressurization process is as follows:

[0051] After the oil tank is placed on the placement plate 4, the electric cylinder 65 is started, and the electric cylinder 65 pushes the air inlet pipe 62 to extend, so that the rubber tube 63 is inserted into the oil tank through the oil inlet pipe, and then the external air pump is started to pressurize the oil tank, and during the pressurization process, the pressurized gas will also enter the airbag 64, causing the airbag 64 to expand, thereby blocking the oil inlet pipe from the inside, and then the drive motor 221 is started to clamp and transport the oil tank. During the transportation process, due to the telescopic performance of the rubber tube 63, when the height of the oil tank drops, the rubber tube 63 can automatically extend to adapt (because the airbag 64 tightly seals and blocks the oil inlet pipe, it will not fall off under the action of resistance). After the inspection is completed and drained, the air pump is turned off, and the electric cylinder 65 is retracted to complete the inspection.

[0052] In the present invention, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0053] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes may be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An air tightness detection device for an automobile fuel tank, characterized in that: The invention comprises a water pool (1), wherein two opposite side walls of the inner cavity of the water pool (1) are symmetrically provided with V-shaped grooves (11), and the opposite ends of the V-shaped groove (11) are arranged as horizontal sections, a reciprocating conveying assembly (2) for conveying an oil tank is installed on the side wall of the water pool (1), two clamping assemblies (3) for clamping an oil tank are installed on the reciprocating conveying assembly (2), and the two clamping assemblies (3) are slidably connected to the V-shaped groove (11), and placement plates (4) for placing an oil tank are symmetrically installed at the opposite ends of the inner cavity of the water pool (1), and when the reciprocating conveying assembly (2) drives a clamping assembly (3) to clamp an oil tank from a placement plate (4) and convey it to the middle section of the V-shaped groove (11), another clamping assembly (3) conveys another oil tank from the middle section of the V-shaped groove (11) to another placement plate (4) and releases the oil tank; The clamping assembly (3) comprises two mounting seats (31) connected to the reciprocating transmission assembly (2), and the two mounting seats (31) are symmetrically arranged on opposite sides of the pool (1), the mounting seats (31) are provided with mounting grooves (32) extending therethrough, a mounting block (33) is slidably connected in the mounting groove (32), a screw rod (34) is rotatably connected to the mounting block (33), and the two screw rods (34) are symmetrically threadedly connected to threaded sleeves (35) at their ends close to each other, a clamping plate (36) is symmetrically installed at the ends close to each other, and the two screw rods (34) are rotatably connected to the V-shaped sliding block at their ends away from each other. The invention relates to a sliding block (37) for cooperating with the V-shaped groove (11), the outer wall of the screw rod (34) is fixedly connected with a first rotating gear (38), and the first rotating gear (38) is located between the mounting block (33) and the sliding block (37), a retractable first limiting rod (39) is installed between the clamping plate (36) and the mounting block (33), the opposite ends of the inner walls on opposite sides of the pool (1) are both installed with racks (12) for cooperating with the first rotating gear (38), and the racks (12) are located above the horizontal section of the V-shaped groove (11), and a second limiting rod (310) for cooperating with the mounting block (33) is installed between the top and bottom of the inner cavity of the mounting groove (32).

2. The air tightness detection device for an automobile fuel tank according to claim 1, characterized in that: The reciprocating transmission assembly (2) comprises a belt transmission member (21) symmetrically mounted on two opposite side walls of the pool (1); two mounting seats (31) of the two clamping assemblies (3) are symmetrically mounted on the belts of the two belt transmission members (21); and a reciprocating driving member (22) is connected between the two belt transmission members (21).

3. The air tightness detection device for an automobile fuel tank according to claim 2, characterized in that: Limiting slide rails (13) are symmetrically mounted on the tops of the two opposite side walls of the water pool (1), and the mounting seat (31) is mounted with limiting sliding blocks (311) that cooperate with the limiting slide rails (13).

4. The air tightness detection device for an automobile fuel tank according to claim 2, characterized in that: The belt transmission member (21) comprises three first mounting plates (211), and the three first mounting plates (211) are arranged in a V-shape, and the three first mounting plates (211) are all rotatably connected to pulleys (212), and belts (213) are connected between the three pulleys (212); The reciprocating drive member (22) comprises a drive motor (221) mounted below the pool (1); an incomplete bevel gear (222) is fixedly connected to the output end of the drive motor (221); a first rotating rod (223) and a second rotating rod (224) are rotatably connected between the two first mounting plates (211) located below; the first rotating rod (223) is connected to two pulleys (212) located below; two second rotating gears (225) are symmetrically fixedly connected to the outer wall of the first rotating rod (223); a transition gear (226) meshingly connected to the second rotating gear (225) is symmetrically fixedly connected to the outer wall of the second rotating rod (224); two first bevel gears (227) are fixedly connected to the outer wall of the second rotating gear (225); the incomplete bevel gear (222) is located below between the two first bevel gears (227) and meshes with the two first bevel gears (227) in sequence.

5. The air tightness detection device for an automobile fuel tank according to claim 4, characterized in that: Two shaking components (5) are symmetrically fixedly connected at opposite ends of the water pool (1), and the two shaking components (5) are respectively connected to the placement plate (4) on the same side; The shaking assembly (5) comprises a second mounting plate (51) symmetrically mounted on opposite side walls of the pool (1), a double-headed screw (52) being rotatably connected between the two second mounting plates (51), and the thread grooves at opposite ends of the double-headed screw (52) are reciprocating thread grooves arranged in the same direction of rotation, and the two ends of the double-headed screw (52) are symmetrically threadedly connected to connecting rods (53), and one end of the two connecting rods (53) is inserted into the pool (1) and connected to the placement plate (4), and the double-headed screw (5 A worm wheel (54) is fixedly connected at the middle position of the incomplete bevel gear (222), a worm (55) is meshedly connected at the bottom of the worm wheel (54), a second bevel gear (56) is fixedly connected at one end of the worm (55), and the two second bevel gears (56) are respectively located on both sides above the incomplete bevel gear (222), the incomplete bevel gear (222) is meshedly connected with the two first bevel gears (227) and the two second bevel gears (56) in sequence, and a fixing block for fixing the worm (55) is installed at the bottom of the pool (1).

6. The air tightness detection device for an automobile fuel tank according to claim 5, characterized in that: The side walls at opposite ends of the water pool (1) are provided with through grooves that cooperate with the connecting rods (53).

7. The air tightness detection device for an automobile fuel tank according to claim 5, characterized in that: Hinge blocks (41) are symmetrically mounted on opposite sides of one end of the placement plate (4) away from the side wall of the pool (1); a mounting rod (42) is rotatably connected between the two hinge blocks (41); a baffle plate (43) is fixedly mounted on the outer wall of the mounting rod (42); torsion springs (44) are symmetrically mounted on opposite outer walls of both ends of the mounting rod (42); and the two ends of the torsion spring (44) are respectively connected to the side wall of the baffle plate (43) and the hinge block (41); the height of the baffle plate (43) is less than the length of the hinge block (41).

8. The air tightness detection device for an automobile fuel tank according to claim 5, characterized in that: A plurality of drainage holes are provided at the bottom of the placement plate (4).

9. The air tightness detection device for an automobile fuel tank according to claim 8, characterized in that: The bottom of the placement plate (4) is a hollow structure, and a plurality of rotating shafts (45) are rotatably connected between two opposite side walls of the bottom of the placement plate (4). The outer walls of the rotating shafts (45) are fixedly connected to a plurality of rollers (46), and the rolling direction of the rollers (46) is consistent with the conveying direction of the reciprocating conveying assembly (2).

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