Oiling machine pipeline joint pressure resistance detection device

Abstract

The invention relates to the technical field of oiling machines, and particularly discloses an oiling machine pipeline joint pressure resistance detection device which comprises a base frame, a cover body shell, a controller, a detection mechanism, a simulation mechanism, an oil supply system, a joint sensor, a grating sensor and a track camera. The detection mechanism is arranged at the top end of the base frame and located in the cover body shell. The simulation mechanism is arranged at the top end of the base frame and located behind the detection mechanism. Full-process automatic management and control of oiling machine pipeline connector pressure resistance detection are achieved, accurate sealing butt joint of the connector can be achieved in the detection process, it is guaranteed that leakage does not exist in the high-pressure oil circulation process, scenes such as sharp impact and extrusion borne by the connector in actual use can be truly copied, and the detection accuracy is improved. In the simulation process, it is ensured that impact force is evenly transmitted, the impact position is accurate, the impact resistance and compression strength of the connector can be comprehensively detected, and the standardization level and the quality control capacity of connector detection are overall improved.

Description

Technical Field

[0001] This invention relates to the field of fuel dispenser technology, specifically to a fuel dispenser pipeline joint pressure testing device. Background Technology

[0002] Fuel dispensers are specialized metering devices for refueling motor vehicles with gasoline, diesel, and other fuels. They mainly consist of a fuel pump, fuel-gas separator, metering, control, display, pipeline, and fuel nozzle. They are widely used in gas stations and other fuel refueling locations. Their working pressure, sealing performance, and structural strength directly affect refueling safety, metering accuracy, and explosion-proof requirements. They are key equipment to ensure the safe and reliable operation of fuel storage, transportation, and refueling. Fuel dispenser pipeline joints are key connecting components that link the fuel dispenser main unit, fuel pipeline, valves, and fuel nozzle. They bear the responsibilities of fuel delivery, leak-proof sealing, and structural load-bearing. They are usually made of metal or high-strength composite materials and need to work stably for a long time under certain pressure, vibration, and external impact environments. Their structural strength, sealing performance, and compression resistance directly affect the overall safety and reliability of the fuel dispenser. In the current technical field, the pressure resistance testing of fuel dispenser pipeline joints suffers from low automation. The testing process relies on manual clamping and docking operations, resulting in low efficiency and difficulty in meeting the needs of batch testing. Secondly, the reliability of the sealing connection is insufficient, making it difficult to achieve leak-free sealing under high-pressure conditions. Fuel leakage not only leads to distorted test data but may also cause safety hazards. It cannot accurately reflect the actual sealing performance and pressure resistance level of the joint. Furthermore, the simulation effect of extreme working conditions is poor, and it is impossible to achieve stable alignment of a single position during the impact process, resulting in uneven impact force transmission. It is difficult to truly replicate the sharp impact scenarios that the joint is subjected to in actual use, thus limiting the reference value of the joint's impact resistance test results. It is also impossible to achieve full coverage testing of the joint's outer surface, easily missing defects such as stress concentration and vulnerable areas, leading to unqualified joints entering the market. Overall, the testing level is insufficient to meet the needs of high-quality development in the industry. Summary of the Invention

[0003] The purpose of this invention is to provide a pressure testing device for fuel dispenser pipeline joints to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a pressure-resistant testing device for fuel dispenser pipeline joints, comprising: a base frame, a housing, a controller, a testing mechanism, a simulation mechanism, a fuel supply system, joint sensors, grating sensors, and a track camera; the housing is installed on the top outer side of the base frame; the controller is installed on the right front of the outer surface of the housing; the testing mechanism is located at the top of the base frame and inside the housing; the simulation mechanism is located at the top of the base frame and behind the testing mechanism; the fuel supply system is installed on the inner rear side of the base frame, and the fuel supply system and the controller are electrically connected; there are two joint sensors, which are respectively installed on the left and right sides behind the top of the base frame, and the joint sensors and the fuel supply system are connected through pipelines, and the joint sensors and the controller are electrically connected; there are two grating sensors, which are respectively installed on the bottom front side of the left and right sides inside the housing, and the grating sensors and the controller are electrically connected; the track camera is installed on the upper inside of the housing, and the track camera and the controller are electrically connected.

[0005] Preferably, the detection mechanism includes: a track platform, a linear actuator, and a linear drive platform; the track platform is installed in the front middle of the top of the base frame in the front-rear direction; the linear actuator is installed in the front-rear direction at the top of the base frame and located on the left side of the track platform, the moving end of the linear actuator is connected to the moving end of the track platform, and the linear actuator and the controller are electrically connected; there are two linear drive platforms, which are respectively installed in the left-right direction at the top of the base frame and located on the left and right rear sides of the track platform, and the linear drive platforms and the controller are electrically connected.

[0006] Preferably, the detection mechanism further includes: a connector component and a workpiece fixing component; the number of connector components is two, and the two connector components are respectively disposed on the top of the moving ends of the left and right linear drive platforms; wherein, the top of the moving end of the track platform is provided with a workpiece fixing component.

[0007] Preferably, the workpiece fixing component includes: a workpiece bearing and attitude adjustment unit and a workpiece clamping and lifting adjustment unit; the workpiece bearing and attitude adjustment unit is installed on the top of the moving end of the track platform to provide bottom support for the workpiece to be inspected and to adjust the clamping attitude of the workpiece to be inspected; the workpiece clamping and lifting adjustment unit is fixedly installed on the workpiece bearing and attitude adjustment unit to cooperate with the workpiece bearing and attitude adjustment unit to clamp and fix the workpiece to be inspected, and to adapt to workpieces of different specifications.

[0008] Preferably, the connector component includes: a first housing, a second lead screw assembly, a third motor, a first belt assembly, a second limiting assembly, a movable seat, a straight tube, and a connector tube; the first housing is fixedly installed on the top of the movable end of the linear drive platform in a left-right direction; the second lead screw assembly is installed in a left-right direction below the inner cavity of the first housing; the third motor is installed on the rear side of the outer surface of the second lead screw assembly via a bracket, and the third motor is electrically connected to the controller; one end of the first belt assembly has a pulley fixedly installed on the rotating end of the third motor, and the other end of the first belt assembly has a pulley that passes through a groove opened on the rear side of the first housing and is fixedly connected to the inner end of the lead screw shaft of the second lead screw assembly; there are two sets of second limiting assemblies, with two second limiting assemblies in each set, and the two sets of second limiting assemblies are respectively installed on the upper and lower sides of the front and rear ends of the inner wall of the first housing; the movable seat is fixedly installed on the inner side of the limiting ends of the front and rear sets of second limiting assemblies; the straight tube is installed in a left-right direction on the outer side of the top end of the inner cavity of the movable seat; one end of the connector tube is fixedly installed on the outer end of the straight tube, and the other end of the connector tube can be connected to a connector sensor.

[0009] Preferably, the connector component further includes: a key block cylinder, a fourth motor, a second belt assembly, an annular sliding groove disc, a sealing gasket, a third limiting member, a toggle roller seat, and a first miniature electric telescopic rod; the key block cylinder is rotatably mounted on the inner side of the top of the inner cavity of the movable seat via a bearing seat in the left-right direction; the straight tube passes through the interior of the key block cylinder and extends out of the inner end of the key block cylinder; a key block is provided on the inner side of the outer wall of the key block cylinder; the fourth motor is fixedly mounted on the inner side of the bottom end of the inner cavity of the first housing; the fourth motor and the controller are electrically connected; one end of the second belt assembly's pulley is fixedly mounted on the rotating end of the fourth motor, and the other end of the second belt assembly's pulley is fixedly mounted on the right end of the outer surface of the key block cylinder; the annular sliding groove disc The annular slide plate is fitted onto the inner side of the outer wall of the key block cylinder, and a keyway is provided on the inner side of the annular slide plate to be adapted to and inserted into the key block of the key block cylinder; the sealing gasket is installed circumferentially on the left side of the annular slide plate and located outside the straight tube; the third limiting member is fixedly installed on the upper inner side of the outer surface of the movable seat by a bracket; the actuating roller seat is installed on the top of the limiting end of the third limiting member, and rollers are provided on the front and rear sides of the actuating roller seat and are inserted into the outer slide groove of the annular slide plate; the first micro electric telescopic rod is installed above the inner cavity of the movable seat, the telescopic end of the first micro electric telescopic rod extends out of the outside of the movable seat and is fixedly connected to the outer side of the actuating roller seat, and the first micro electric telescopic rod is electrically connected to the controller.

[0010] Preferably, the simulation mechanism includes: a dual-axis moving platform, a fourth limiting component, a first electric telescopic rod, a second housing, a second electric telescopic rod, a first connecting member, a second miniature electric telescopic rod, and a second connecting member; the dual-axis moving platform is fixedly mounted on the top of the base frame along the left-right direction via a bracket, and is located behind the track platform; the dual-axis moving platform and the controller are electrically connected; the fourth limiting component is mounted along the up-down direction on the lower right side of the moving end of the first housing; the first electric telescopic rod is mounted on the upper right side of the moving end of the first housing via a bracket, and the first electric telescopic rod is electrically connected to the controller; the second housing is mounted on the right side of the limiting end of the fourth limiting component, and the telescopic end of the first electric telescopic rod is fixedly connected to the top of the second housing; the second electric telescopic rod is mounted on the upper left side of the inner cavity of the second housing, and the second electric telescopic rod is electrically connected to the controller; the first connecting member is fixedly mounted on the bottom of the telescopic end of the second electric telescopic rod; the second miniature electric telescopic rod is mounted on the lower right side of the inner cavity of the second housing, and the second miniature electric telescopic rod is electrically connected to the controller; the second connecting member is fixedly mounted on the top of the telescopic end of the second miniature electric telescopic rod.

[0011] Preferably, the simulation mechanism further includes: a punch, a first sleeve, a second sleeve, a hammer, a first spring, a punch pin, and a second spring; the punch is fixedly installed on the right side of the first connector in the vertical direction; the first sleeve is sleeved on the outside of the punch in the vertical direction; the second sleeve is screwed to the top of the outside of the first sleeve in the vertical direction, and the inner cavity of the second sleeve is hourglass-shaped; the hammer is adapted to be inserted into the bottom of the inner cavity of the second sleeve, and a through hole is opened at the center of the bottom striking end face of the hammer; one end of the first spring is fixedly installed on the top of the hammer, and the other end of the first spring is fixedly connected to the top of the inner wall of the second sleeve; the punch pin adopts a structural design in which the bottom surface is not perpendicular to the central axis of the punch, and the punch pin is arranged in a preset inclined posture in the inner cavity of the first sleeve and is located above the punch; the second spring is sleeved on the outside of the punch pin.

[0012] Preferably, the tip of the punch is pointed and extends into the lower inner cavity of the second sleeve, enabling it to make eccentric contact with the bottom striking end face of the hammer, with the contact point slightly offset from the axis of the hammer's central through hole. The middle tapered section of the punch remains in non-contact with the top tapered surface of the lower inner cavity of the second sleeve.

[0013] Compared with the prior art, the beneficial effects of the present invention are: 1. The operator opens the outer shell of the enclosure via the controller and initially places the workpiece to be inspected on the bottom roller seat. Then, the linear drive, the first motor, and the second motor are activated to move the workpiece fixing component to the front loading station. By rotating the base to tilt and raising / lowering the top roller seat, the clamping gap is increased, and the workpiece is placed in and reset to complete horizontal fixation. After the grating sensor detects that the workpiece is clamped in place, the controller controls the track platform to move the workpiece to the inspection station. The left and right linear drive platforms and the third motor drive the connector component to move inward, so that the sealing gasket is inserted into both ends of the workpiece. Then, the first micro electric telescopic rod drives the annular sliding plate to move, achieving a sealed connection between the two ends of the workpiece. Afterward, the oil supply system is activated, injecting oil into the workpiece through the connector sensor and connector component to form a closed-loop circulation. At the same time, the fourth motor drives the workpiece to rotate axially to ensure no blind spots in the inspection. The connector sensor monitors the oil flow rate and other data in real time.

[0014] 2. After the workpiece rotates to the preset impact position and stops, the dual-axis moving platform adjusts the position of the simulation mechanism so that the punch is aligned with the designated part of the workpiece. The first and second electric telescopic rods drive the punch to make close contact with the outer wall of the workpiece. Then, the second miniature electric telescopic rod drives the second sleeve and the first sleeve to move down. The hammer is kept stationary by the inclined punch, the first spring is compressed and stores force, and the punch is automatically centered under the guidance of the conical surface. After centering, the constraint is released, the first spring releases the impact force, which is transmitted to the punch through the hammer and the punch to simulate a sharp impact on the workpiece. After the impact is completed, all components are reset, and the punch returns to its inclined posture. Throughout the impact process, the joint sensor continuously monitors the oil data to determine the workpiece's pressure resistance, impact resistance, and sealing reliability, thus completing the test.

[0015] In summary, this invention achieves fully automated control of the pressure resistance testing process for fuel dispenser pipeline joints, improving the efficiency and consistency of batch testing. During the testing process, it enables precise sealing and connection of the joints, ensuring leak-free high-pressure fuel circulation and guaranteeing the accuracy and reliability of pressure, flow, and other test data. This provides precise data support for determining the pressure resistance performance of the joints. Furthermore, through precise simulation of extreme working conditions, it can realistically replicate the sharp impacts and compression scenarios experienced by the joints in actual use. The simulation ensures uniform impact force transmission and precise impact location, allowing for comprehensive testing of the joints' impact resistance and pressure resistance. Overall, it improves the standardization level and quality control capabilities of joint testing. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 for Figure 1 Exploded view of the interior; Figure 3 for Figure 2 Explosion diagram of the testing facility; Figure 4 for Figure 3 Enlarged view of point A; Figure 5 for Figure 3 Exploded view of the joint components; Figure 6 for Figure 5 Enlarged view of point B; Figure 7 for Figure 2 Exploded view of the simulated mechanism; Figure 8 for Figure 7 Enlarged view of point C; Figure 9 for Figure 7 Enlarged view of point D.

[0017] In the diagram: 1. Base frame; 2. Housing shell; 3. Controller; 4. Detection mechanism; 41. Track platform; 42. Linear actuator; 43. Linear drive platform; 100. Workpiece bearing and posture adjustment unit; 44. Fixed base; 45. Rotating base; 46. First motor; 47. Bottom roller seat; 200. Workpiece clamping and lifting adjustment unit; 48. Vertical tank shell; 49. First limit assembly; 410. First lead screw assembly; 411. Second motor; 412. Horizontal tank shell; 413. Adjustment frame; 414. Top roller seat; 5. Connector assembly; 51. First housing; 52. Second lead screw assembly; 53. Third motor; 54. First belt assembly; 55. Second limiting assembly; 56. Moving seat; 57. Straight tube; 58. Connector tube; 59. Key block cylinder; 510. Fourth motor; 511. Second belt assembly; 512. Annular slide plate; 513. Sealing gasket; 514. Third limiting component; 515. Actuating roller seat; 516. First miniature electric telescopic rod; 6. Simulation mechanism; 61. Dual shaft 62. Mobile platform; 63. Fourth limiting component; 64. First electric telescopic rod; 65. Second housing; 66. Second electric telescopic rod; 67. First connector; 68. Second miniature electric telescopic rod; 69. Second connector; 60. Punch; 611. First sleeve; 612. Second sleeve; 613. Hammer; 614. First spring; 615. Punch; 616. Second spring; 7. Oil supply system; 8. Connector sensor; 9. Grating sensor; 10. Track camera. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Please see Figures 1-9, the present invention provides a technical solution: a pressure resistance detection device for a fuel dispenser pipeline joint, comprising: a base frame 1, a housing shell 2, a controller 3, a detection mechanism 4, a simulation mechanism 6, a fuel supply system 7, a joint sensor 8, a grating sensor 9 and an orbital camera 10; the housing shell 2 is installed on the outer side of the top of the base frame 1. The housing shell 2 is a customized industrial protection shell. The front of the housing is equipped with an openable tempered glass observation window. The observation window uses double-layer laminated tempered glass, which is convenient for staff to observe the detection process of internal workpieces in real time. Without opening the housing, the detection status can be grasped. A hidden maintenance door is provided on the side of the housing. The maintenance door is equipped with a sealing strip. After closing, full-closed protection can be achieved, which is convenient for later maintenance of internal components; the controller 3 is installed on the front right side of the outer surface of the housing shell 2. The controller 3 is a programmable logic controller, with an Ethernet port and a high-speed counter built-in. It can realize multi-device linkage control, adapt to the signal transmission and instruction issuance of each electrical component of the device, and is equipped with a color touch screen human-computer interaction interface, which can intuitively display the device operation status, detection data, fault information, etc., facilitating staff operation and monitoring; the detection mechanism 4 is arranged at the top of the base frame 1 and is located inside the housing shell 2; the simulation mechanism 6 is arranged at the top of the base frame 1 and is located behind the detection mechanism 4; the fuel supply system 7 is installed at the rear side inside the base frame 1. The fuel supply system 7 is electrically connected to the controller 3. The fuel supply system 7 is a small high-pressure closed-loop fuel supply system, which consists of a high-pressure oil pump, a fuel tank, a precision filter, a pressure relief valve and pipeline joint components. The pressure can be adjusted through the controller 3 according to the detection requirements, adapting to the pressure resistance detection standard of the fuel dispenser pipeline joint. The fuel tank can store the detection fuel suitable for the fuel dispenser pipeline. The precision filter can effectively filter impurities in the fuel, preventing impurities from blocking the pipeline, damaging the sensor and the internal channel of the workpiece. The system is equipped with a pressure stabilizing device to ensure stable pressure during the fuel circulation process. The pressure relief valve has an overpressure protection function and automatically relieves pressure when the system pressure exceeds the rated upper limit, avoiding equipment damage; the number of joint sensors 8 is two. The two joint sensors 8 are respectively installed on the left and right sides at the rear of the top of the base frame 1. The joint sensors 8 are connected to the fuel supply system 7 through pipelines. The joint sensors 8 are electrically connected to the controller 3. The joint sensors 8 can monitor key parameters such as the pressure, flow rate and temperature of the fuel in real time, and can transmit the monitored data to the controller 3 in real time for analyzing whether there are problems such as leakage and abnormal pressure in the workpiece; the number of grating sensors 9 is two. The two grating sensors 9 are respectively installed on the front side at the bottom of the left and right sides inside the housing shell 2. The grating sensors 9 are electrically connected to the controller 3. The two grating sensors 9 are installed in a opposed manner to form a detection light curtain for real-time detection of the workpiece clamping state. When the workpiece is accurately clamped in place, without deviation and without foreign object occlusion, a qualified signal is sent to the controller 3 to trigger the subsequent detection process;The track camera 10 is installed inside the upper part of the housing 2. The track camera 10 is electrically connected to the controller 3. The track camera 10 is an industrial-grade track-mounted high-definition network camera, equipped with a movable track, allowing it to move left and right along the upper part of the housing to achieve full coverage of the inspection station. The camera has infrared night vision capabilities, adapting to the lighting environment inside the housing, and can clearly capture the inspection process even in low light conditions. It can transmit real-time video signals to the touchscreen of the controller 3, facilitating real-time monitoring of the entire process, including workpiece clamping, sealing, and impact testing. It can also be used for post-inspection process traceability and fault diagnosis.

[0020] As a preferred option, further, such as Figure 3 and Figure 4 As shown, the inspection mechanism 4 includes: a track platform 41, a linear actuator 42, a linear drive platform 43, and a connector component 5. The track platform 41 is installed at the top front center of the base frame 1 in the front-rear direction. The track platform 41 is an industrial-grade high-precision linear track platform, which works with the linear actuator 42 to achieve automated workstation switching. The linear actuator 42 is installed at the top of the base frame 1 in the front-rear direction and is located to the left of the track platform 41. The moving end of the linear actuator 42 is connected to the moving end of the track platform 41. The linear actuator 42 is electrically connected to the controller 3. The linear actuator 42 is a Panasonic servo linear actuator, equipped with a high-precision grating ruler, which can realize closed-loop position control. It can receive commands from the controller 3 and accurately control the moving speed, stroke, and stopping position of the track platform 41 to realize workpiece loading. The system enables automated switching between clamping and inspection stations. Two linear drive platforms 43 are installed on the top of the base frame 1 in the left-right direction, located on the left and right rear sides of the track platform 41. The linear drive platforms 43 are electrically connected to the controller 3. The linear drive platforms 43 are linear drive platforms that can receive linkage commands from the controller 3, synchronously driving the two connector components 5 to move inwards or outwards, precisely adjusting the distance between the connector components 5 and the two ends of the workpiece, adapting to fuel dispenser pipe connectors of different lengths, and ensuring precise docking between the connector components 5 and the two ends of the workpiece. Two connector components 5 are installed on the top of the moving ends of the left and right linear drive platforms 43. A workpiece fixing component is installed on the top of the moving end of the track platform 41.

[0021] More specifically, the workpiece fixing components include: a workpiece bearing and attitude adjustment unit 100 and a workpiece clamping and lifting adjustment unit 200; the workpiece bearing and attitude adjustment unit 100 is installed on the top of the moving end of the track platform 41 to provide bottom support for the workpiece to be inspected and to adjust the clamping attitude of the workpiece to be inspected; the workpiece clamping and lifting adjustment unit 200 is fixedly installed on the workpiece bearing and attitude adjustment unit 100 to cooperate with the workpiece bearing and attitude adjustment unit 100 to clamp and fix the workpiece to be inspected, and to adapt to workpieces of different specifications.

[0022] The workpiece bearing and attitude adjustment unit 100 includes: a fixed base 44, a rotating base 45, a first motor 46, and a bottom roller seat 47; there are two fixed bases 44, which are respectively installed on the front and rear sides of the top of the moving end of the track platform 41; the rotating base 45 is rotatably installed on the inner side of the front and rear fixed bases 44 via a rotating shaft in the front-rear direction; the first motor 46 is installed on the outside of the rear fixed base 44, and the rotating end of the first motor 46 extends into the inner side of the fixed base 44 and is fixedly connected to the axis of the rotating base 45. The first motor 46 is electrically connected to the controller 3. The first motor 46 is a servo motor, equipped with an absolute encoder, and has forward and reverse rotation functions and braking functions. It can receive commands from the controller 3 to accurately control the rotation angle and speed of the rotating base 45, and realize the automatic adjustment of the clamping gap; there are two bottom roller seats 47, which are respectively fixedly installed on the front and rear sides of the top of the rotating base 45.

[0023] The workpiece clamping and lifting adjustment unit 200 includes: a vertical tank housing 48, a first limiting component 49, a first lead screw assembly 410, a second motor 411, a horizontal tank housing 412, an adjusting frame 413, and a top roller seat 414. The vertical tank housing 48 is fixedly installed at the top of the rotating base 45 in the vertical direction and is located behind the bottom roller seat 47. The first limiting component 49 is installed at the top rear side of the inner cavity of the vertical tank housing 48 in the vertical direction. The first limiting component 49 is a linear guide rail limiting component, and ball bearing transmission is used between the guide rail and the slider. The guide rail of the first limiting component 49 is fixed to the rear side of the inner cavity of the vertical tank housing 48. The slider is fixedly connected to the transverse groove housing 412, guiding and limiting the vertical movement of the transverse groove housing 412. The first lead screw assembly 410 is installed above the inner cavity of the vertical groove housing 48 in the vertical direction. The first lead screw assembly 410 is a ball screw assembly with a ball recirculation structure for the nut, which can convert the rotational motion of the second motor 411 into the linear lifting motion of the transverse groove housing 412, driving the top roller seat 414 to lift and lower, thus achieving precise adjustment of the clamping gap. The second motor 411 is fixedly installed at the top of the vertical groove housing 48, and the rotating end of the second motor 411 extends into the inner cavity of the vertical groove housing 48 and connects with the first lead screw assembly 410. The screw shaft of the lever assembly 410 is fixedly connected. The second motor 411 and the controller 3 are electrically connected. The second motor 411 is a servo motor equipped with a high-precision encoder, has forward and reverse rotation functions, and can receive commands from the controller 3 to precisely control the lifting height of the top roller seat 414, ensuring that the top roller seat 414 is in close contact with the workpiece surface. The transverse groove housing 412 is installed in the front side of the limiting end of the first limiting assembly 49 along the front-rear direction. The interior of the transverse groove housing 412 is connected to the screw nut of the first screw assembly 410. The adjusting frame 413 is installed inside the lower part of the transverse groove housing 412. The adjusting frame 413 is a miniature manual adjusting frame. The adjustment method is a knob type, which is convenient for manual fine-tuning by the staff. It can fine-tune the height and horizontal position of the top roller seat 414, compensate for processing and installation errors, and ensure that the top roller seat 414 is precisely attached to the surface of the workpiece. At the same time, it is compatible with fuel dispenser pipe connectors of different diameters and specifications, improving the versatility and accuracy of clamping. The top roller seat 414 is fixedly installed at the bottom of the adjustment end of the adjustment frame 413. The top roller seat 414 is a custom-made wear-resistant roller seat. The roller is made of nylon material and can work with the bottom roller seat 47 to clamp and fix the workpiece. Pressure is applied from the top of the workpiece to ensure that the workpiece is firmly clamped without loosening. At the same time, the roller can rotate synchronously with the workpiece.

[0024] As a preferred option, further, such as Figure 5 and Figure 6As shown, the connector component 5 includes: a first housing 51, a second lead screw assembly 52, a third motor 53, a first belt assembly 54, a second limiting assembly 55, a moving seat 56, a straight tube 57, a connector tube 58, a key block cylinder 59, a fourth motor 510, a second belt assembly 511, an annular slide plate 512, a sealing gasket 513, a third limiting member 514, a toggle roller seat 515, and a first miniature electric telescopic rod 516; the first housing 51 is fixedly installed on the top of the moving end of the linear drive platform 43 in the left-right direction; the second lead screw assembly 52 is installed in the lower part of the inner cavity of the first housing 51 in the left-right direction, and the second lead screw assembly 52 is a high-precision ball screw assembly with a nut. The ball bearing circulation structure converts the rotational motion of the third motor 53 into the linear reciprocating motion of the moving seat 56, achieving the mating of the sealing gasket 513 with both ends of the workpiece. The third motor 53 is mounted on the rear side of the outer surface of the second lead screw assembly 52 via a bracket. The third motor 53 is electrically connected to the controller 3. The third motor 53 is a servo motor equipped with an absolute encoder and features forward / reverse rotation and braking / locking functions to prevent the moving seat 56 from loosening after sealing. The third motor 53 can receive commands from the controller 3 to precisely control the rotation angle and speed of the lead screw, thereby controlling the travel and stop position of the moving seat 56, ensuring the mating of the sealing gasket 513 with both ends of the workpiece. The first belt assembly 54 has one pulley fixedly installed on the rotating end of the third motor 53, and the other pulley passes through the groove opened on the rear side of the first housing 51 and is fixedly connected to the inner end of the screw shaft of the second screw assembly 52. ​​The first belt assembly 54 can smoothly transmit the rotational power of the third motor 53 to the screw of the second screw assembly 52. ​​There are two sets of second limiting components 55, with two components in each set. The two sets of second limiting components 55 are respectively installed on the upper and lower sides of the front and rear ends of the inner wall of the first housing 51. The second limiting components 55 are linear guide rail limiting components, which can... It can guide and limit the left and right linear movement of the moving seat 56 to prevent the moving seat 56 from shifting up and down or swaying back and forth during movement; the moving seat 56 is fixedly installed inside the limiting end of the two sets of second limiting components 55; the straight pipe 57 is installed on the outer side of the top of the inner cavity of the moving seat 56 in the left and right direction; one end of the connector pipe 58 is fixedly installed on the outer end of the straight pipe 57, and the other end of the connector pipe 58 can be connected to the connector sensor 8. The connector pipe 58 is a customized high-pressure connector pipe with bidirectional sealing function, which can quickly connect to the interface of the connector sensor 8, and is easy to disassemble and assemble. It can connect the straight pipe 57 and the connector sensor 8 to ensure the sealing and stability of the oil transmission process.The key block cylinder 59 is rotatably mounted on the inner side of the top of the inner cavity of the movable seat 56 via a bearing seat in the left-right direction. The straight tube 57 passes through the interior of the key block cylinder 59 and extends out of the inner end of the key block cylinder 59. Key blocks are provided on the inner side of the outer wall of the key block cylinder 59. Two symmetrical flat keys are provided on the inner side of the outer wall of the key block cylinder 59, which are precisely matched with the keyway of the annular slide plate 512. They can rotate under the drive of the fourth motor 510. Through the cooperation between the key blocks and the keyway of the annular slide plate 512, the annular slide plate 512 is driven to rotate synchronously, thereby driving the workpiece to rotate axially, without affecting the oil transmission of the straight tube 57. The fourth motor 510 is fixedly mounted on the inner side of the bottom of the inner cavity of the first housing 51. The fourth motor 510 is electrically connected to the controller 3. The fourth motor 510 is a servo motor equipped with an absolute encoder, featuring forward and reverse rotation and stepless speed regulation. It provides power for the rotation of the key block cylinder 59, driving the key block cylinder 59 to rotate at a constant speed via the second belt assembly 511, thereby driving the workpiece to rotate. One end of the second belt assembly 511 is fixedly mounted on the rotating end of the fourth motor 510, and the other end is fixedly mounted on the right end of the outer surface of the key block cylinder 59. The second belt assembly 511 can smoothly transmit the rotational power of the fourth motor 510 to the key block cylinder 59, ensuring that the key block cylinder 59 rotates at a constant speed. The annular slide plate 512 is sleeved on the inner side of the outer wall of the key block cylinder 59, and the inner side of the annular slide plate 512 has a groove for connecting with the key. The keyway of the key block 59 is adapted to be inserted into the keyway groove. The annular sliding plate 512 can be precisely inserted into the key block 59 and can move freely along the axial direction of the key block 59. The annular sliding plate 512 has an annular groove on its outer side, which is adapted to the roller of the actuating roller seat 515. It can bear the rotational power of the key block 59, drive the sealing gasket 513 and the workpiece to rotate synchronously, and move along the axial direction under the push of the actuating roller seat 515 to press the sealing gasket 513 and achieve sealing at both ends of the workpiece. The sealing gasket 513 is installed circumferentially on the left side of the annular sliding plate 512 and is located outside the straight tube 57. The third limiting member 514 is fixedly installed on the upper inner side of the outer surface of the moving seat 56 by a bracket. The third limiting member 514 is made of micro The linear guide rail limiting component uses ball bearing transmission between the guide rail and the slider to guide and limit the left and right movement of the actuating roller seat 515. The actuating roller seat 515 is installed on the top of the limiting end of the third limiting component 514. Rollers are provided on the front and rear sides of the actuating roller seat 515 and are inserted into the external groove of the annular slide plate 512. Driven by the first micro electric telescopic rod 516, the actuating roller seat 515 can move left and right along the guide rail of the third limiting component 514. Through the cooperation of the rollers with the groove of the annular slide plate 512, the annular slide plate 512 is pushed to move axially along the key block cylinder 59, thereby pressing the sealing gasket 513 to achieve sealing at both ends of the workpiece without affecting the rotation of the annular slide plate 512.The first miniature electric telescopic rod 516 is installed above the inner cavity of the movable seat 56. The telescopic end of the first miniature electric telescopic rod 516 extends out of the movable seat 56 and is fixedly connected to the outer side of the actuating roller seat 515. The first miniature electric telescopic rod 516 is electrically connected to the controller 3. The first miniature electric telescopic rod 516 is a pen-type miniature electric telescopic rod, which can receive commands from the controller 3 to realize telescopic action, drive the actuating roller seat 515 to move left and right, and thus push the annular sliding plate 512 to move axially.

[0025] As a preferred embodiment, the simulation mechanism 6 further includes: a dual-axis moving platform 61, a fourth limiting component 62, a first electric telescopic rod 63, a second housing 64, a second electric telescopic rod 65, a first connector 66, a second miniature electric telescopic rod 67, a second connector 68, a punch 69, a first sleeve 610, a second sleeve 611, a hammer 612, a first spring 613, a punch 614, and a second spring 615. The dual-axis moving platform 61 is fixedly mounted on the top of the base frame 1 along the left-right direction via a bracket, and is located behind the track platform 41. The dual-axis moving platform 61 is electrically connected to the controller 3. The dual-axis moving platform 61 is a high-precision dual-axis linear moving platform, using ball screw transmission and equipped with a servo motor drive, which can realize… The device features stepless speed regulation, capable of receiving commands from controller 3 to drive its own moving end and all simulated components above it to move precisely along the left-right and front-back dual-axis directions. This adjusts the position of the punch 69, aligning it with vulnerable or stress-concentrated areas on the workpiece's outer surface, ensuring the accuracy of the impact test and adapting to impact testing requirements of different specifications and positions. The fourth limiting component 62 is installed vertically on the lower right side of the moving end of the first housing 51. The fourth limiting component 62 uses a miniature linear guide rail limiting component, which guides and limits the vertical movement of the second housing 64. The first electric telescopic rod 63 is installed via a bracket on the upper right side of the moving end of the first housing 51. The first electric telescopic rod 63 is electrically connected to controller 3. The first electric telescopic rod 63 uses... The pen-type high-precision electric telescopic rod can receive commands from the controller 3 to achieve telescopic movement, driving the second housing 64 and the lower punch 69 and other components to move up and down along the guide rail of the fourth limiting assembly 62, adjusting the distance between the punch 69 and the outer wall of the workpiece to achieve precise positioning before impact; the second housing 64 is installed on the right side of the limiting end of the fourth limiting assembly 62, and the telescopic end of the first electric telescopic rod 63 is fixedly connected to the top of the second housing 64; the second electric telescopic rod 65 is installed on the upper left side of the inner cavity of the second housing 64, and is electrically connected to the controller 3. The second electric telescopic rod 65 is a small, high-precision electric telescopic rod that can receive commands from the controller 3 to achieve telescopic movement, driving the first connecting piece 66 and the punch 69 to move up and down. The punch 69 is moved so that the sharp end at the bottom of the punch 69 is in close contact with the outer wall of the workpiece, ensuring that the force is effectively transmitted to the workpiece during impact. At the same time, the extension stroke can be adjusted according to the workpiece specifications to adapt to workpieces of different diameters. The first connecting piece 66 is fixedly installed at the bottom of the extension end of the second electric telescopic rod 65. The second mini electric telescopic rod 67 is installed on the lower right side of the inner cavity of the second housing 64. The second mini electric telescopic rod 67 is electrically connected to the controller 3. The second mini electric telescopic rod 67 is a pen-type mini electric telescopic rod that can receive commands from the controller 3 to realize the extension action, drive the second connecting piece 68, the second sleeve 611, and the first sleeve 610 to move up and down, complete the compression and storage of the first spring 613 and reset it, and provide power preparation for the impact action.The second connector 68 is fixedly installed on the top of the telescopic end of the second miniature electric telescopic rod 67; the punch 69 is fixedly installed on the right side of the first connector 66 in the vertical direction; the first sleeve 610 is sleeved on the outside of the punch 69 in the vertical direction; the second sleeve 611 is screwed to the top of the outside of the first sleeve 610 in the vertical direction. The inner cavity of the second sleeve 611 is hourglass-shaped. The upper layer of the hourglass-shaped inner cavity of the second sleeve 611 is used to install the hammer 612 and the first spring 613, and the lower layer is a tapered guide surface for the automatic centering of the punch 614. The top is closed and the bottom is provided with internal threads, which are connected to the first sleeve 610. The external thread of the 0-type sleeve ensures a secure connection and allows for synchronous up-and-down movement with the first sleeve 610. The inner conical surface of the sleeve enables automatic centering of the punch 614 and provides space for the compression and storage of the first spring 613. The hammer 612 is fitted into the bottom of the upper layer of the inner cavity of the second sleeve 611. A through hole is provided at the center of the hammering end face of the hammer 612, allowing it to move freely up and down within the upper layer of the inner cavity of the second sleeve 611. It can receive the elastic potential energy released by the first spring 613 and move rapidly downwards along the central axis, striking the top of the punch 614 through its bottom hammering end face, efficiently transmitting the instantaneous impact force to the punch 614 and then to the punch head 69. The first spring 613... One end of the first spring 613 is fixedly installed on the top of the hammer 612, and the other end is fixedly connected to the top of the inner wall of the second sleeve 611. The first spring 613 is a high-precision compression spring with good elasticity and fatigue strength. It is compressed when the second sleeve 611 moves downward, accumulating elastic potential energy, which is released instantaneously after the punch 614 is centered, generating an instantaneous axial impact force to provide power for the impact action. The punch 614 adopts a structural design in which the bottom surface is not perpendicular to the central axis of the punch 69. The punch 614 is arranged in a preset inclined posture in the inner cavity of the first sleeve 610 and is located above the punch 69. The top of the punch 614 is pointed and extends into the lower space of the inner cavity of the second sleeve 611, which can... The punch 614 is able to make eccentric contact with the bottom hammering end face of the hammer 612, and the contact point is slightly off from the axis of the central through hole of the hammer 612. The middle tapered section of the punch 614 is kept in a non-contact state with the top tapered surface of the lower layer of the inner cavity of the second sleeve 611. The punch 614 is a customized self-centering punch with a sharp tip and a tapered section in the middle, which is precisely matched with the tapered surface of the lower layer of the inner cavity of the second sleeve 611. In the initial state, the hammer 612 is eccentrically constrained. When the second sleeve 611 moves down, it is automatically centered by the tapered surface guide. After centering, the constraint on the hammer 612 is released, and the impact force of the hammer 612 is transmitted to the punch 69. At the same time, after the impact is completed, the tilted posture is restored to prepare for the next impact.The second spring 615 is sleeved on the outside of the punch 614. The second spring 615 is a high-precision compression spring, which can be compressed during the centering process of the punch 614, storing elastic potential energy. After the impact, it is released, pushing the punch 614 back to its initial tilted posture, ensuring that the punch 614 can again achieve eccentric contact with the hammer 612, thus guaranteeing the mechanism's continuous impact capability.

[0026] The specific tasks are as follows: Step 1: Before starting the inspection, the operator sends a command through the controller 3 to open the outer shell 2. The operator simultaneously starts the linear drive 42, the first motor 46, and the second motor 411 through the controller 3. After receiving the control signal, the linear drive 42 drives the moving end of the track platform 41 to move forward in the front-back direction until the workpiece fixing part at the top of the moving end of the track platform 41 moves to the front loading station. After the first motor 46 starts, its rotating end drives the rotating base 45 to rotate around the rotating shaft inside the fixed seat 44. The rotating base 45 simultaneously drives the bottom roller seat 47 fixed at its top and the top roller seat 414 linked above to tilt as a whole. The second motor 411 drives the lead screw in the first lead screw assembly 410 to rotate. The lead screw drives the lead screw nut to move axially through the thread transmission, thereby driving the transverse groove shell 412 fixedly connected to the lead screw nut. Under the limiting action, the transverse tank shell 412 moves upward along the inner cavity of the vertical tank shell 48. With the fine adjustment action of the adjusting frame 413, the inner gap between the top roller seat 414 and the bottom roller seat 47 is further increased to ensure that the gap size is greater than the outer diameter of the workpiece, so that the operator can smoothly put the workpiece in. The operator places the workpiece smoothly in the gap between the top roller seat 414 and the bottom roller seat 47 in the vertical downward direction. The controller 3 controls the second motor 411 to rotate in the reverse direction, driving the screw of the first lead screw assembly 410 to rotate in the reverse direction, driving the transverse tank shell 412 to move downward, so that the top roller seat 414 descends and makes close contact with the outer surface of the workpiece. At the same time, the first motor 46 drives the rotating base 45 to rotate in the reverse direction to reset, so that the rotating base 45 returns to the horizontal state, thereby driving the workpiece to be fixed in the horizontal direction between the top roller seat 414 and the bottom roller seat 47, realizing the precise clamping of the workpiece. Step 2: After the workpiece is clamped, the two grating sensors 9 monitor the workpiece's installation status in real time. When the workpiece position meets the requirements, a signal is immediately sent to the controller 3. After receiving the signal, the controller 3 starts the internal preset detection program, synchronously controlling the linear drive platform 43, the third motor 53, and the first micro electric telescopic rod 516 to start. The linear driver 42 starts again, driving the moving end of the track platform 41 to move backward in the front-back direction, moving the top-fixed workpiece fixing component and the workpiece to the rear detection station inside the outer shell 2. The linear drive platforms 43 on the left and right sides start synchronously, driving the corresponding joint components 5 to move inward towards the left and right ends of the workpiece. The third motors 53 in the joint components 5 on the left and right sides start synchronously, and their rotating ends drive the driving pulley of the first belt assembly 54 to rotate, driving the driven pulley to rotate through the belt drive, thereby driving the screw in the second screw assembly 52 to rotate clockwise or counterclockwise. The lead screw drives the lead screw nut to move through the threaded transmission, which in turn drives the movable seat 56 fixedly connected to the lead screw nut. Under the guiding and limiting action of the two sets of second limiting components 55, the movable seats 56 in the left and right joint components 5 move inward synchronously, so that the sealing gaskets 513 in the left and right joint components 5 are inserted into the workpiece from the left and right ends respectively, ensuring that the sealing gaskets 513 are initially in contact with the inner wall of the workpiece joint. The first micro electric telescopic rods 516 in the left and right joint components 5 extend synchronously, driving the actuating roller seat 515 to move inward under the guiding and limiting action of the third limiting component 514. The actuating roller seat 515 contacts the outer side of the annular slide plate 512 through the rollers on the front and rear sides and applies a thrust, driving the annular slide plate 512 to move inward along the outside of the key block cylinder 59 until the sealing gaskets 513 are tightly in contact with the inner wall of the joint at both ends of the workpiece, realizing the sealing connection at both ends of the workpiece, preventing oil leakage during the subsequent oil supply cycle, and ensuring the accuracy of the test data. Step 3: After the workpiece sealing and docking is completed, the controller 3 starts the internally preset pressure resistance test program, and simultaneously controls the oil supply system 7, the joint sensor 8, and the fourth motor 510 to start. After the high-pressure pump inside the oil supply system 7 starts, it pressurizes the clean test oil stored in the system and delivers it to the joint pipe 58 of the joint component 5 on one side through the joint sensor 8. The oil flows into the straight pipe 57 through the joint pipe 58, and then into the workpiece through the straight pipe 57, forming a high-pressure oil circulation. The oil flowing into the workpiece is discharged through the straight pipe 57 and joint pipe 58 of the joint component 5 on the other side of the workpiece, and then flows back to the oil storage chamber of the oil supply system 7 through the joint sensor 8 on the other side, realizing the closed-loop circulation of the oil and ensuring that the workpiece always maintains a stable test pressure. During this process, the joint sensors 8 on both sides monitor the key data such as the flow rate, flow rate, and pressure of the oil in real time, and transmit the monitored data to the controller 3 in real time, which then performs data analysis. Based on the collected data and analysis, it is determined whether there are any problems such as leakage or abnormal pressure in the workpiece under normal pressure cycling. At the same time, the fourth motor 510 is started, and its rotating end drives the active pulley of the second belt assembly 511 to rotate. Through belt transmission, the driven pulley is driven to rotate, which in turn drives the key block cylinder 59 to rotate at a constant speed around the axis of the straight tube 57. Since the key block on the inner side of the outer wall of the key block cylinder 59 is inserted into the keyway opened on the inner side of the annular slide plate 512, when the key block cylinder 59 rotates, the annular slide plate 512 is driven to rotate synchronously on the inner side of the actuating roller seat 515 through the cooperation of the key block and the keyway. When the annular slide plate 512 rotates, the sealing gasket 513 on its left side is in close contact with the inner wall of the workpiece joint and applies driving force, which drives the workpiece to rotate along its own axis under the support and guidance of the top roller seat 414 and the bottom roller seat 47. This ensures that all parts of the outer surface of the workpiece can be covered by the impact test of the subsequent simulation mechanism 6, ensuring the comprehensiveness of the test and avoiding blind spots in the test. Step 4: After the workpiece rotates to the preset simulated impact position, the controller 3 sends a signal to control the fourth motor 510 to stop rotating, and the workpiece remains stationary. Subsequently, the controller 3 controls the dual-axis moving platform 61, the first electric telescopic rod 63, the second electric telescopic rod 65, and the second micro electric telescopic rod 67 to start. The dual-axis moving platform 61 starts, driving its own moving end to move along the horizontal left-right and forward-backward dual-axis directions to adjust the overall position of the simulation mechanism 6, so that the punch 69 moves to the designated impact test position on the outer surface of the workpiece. This position is preset to be the vulnerable part and stress concentration part of the fuel dispenser pipe joint, which meets the requirements of extreme working condition simulation. The first electric telescopic rod 63 extends, driving the second outer shell 64 to move downward under the guiding and limiting action of the fourth limiting component 62, driving the punch 69 on the inner side of the second outer shell 64 to approach the outer wall of the workpiece until the sharp end of the bottom of the punch 69 makes slight contact with the outer wall of the workpiece, completing the impact. Before positioning, the second electric telescopic rod 65 extends, driving the first connecting piece 66 to move downward, which in turn drives the punch 69 to move further downward, so that the bottom tip of the punch 69 is in close contact with the outer wall of the workpiece, ensuring that the force during impact can be effectively transmitted to the workpiece. The second miniature electric telescopic rod 67 shortens, driving the second connecting piece 68 to move downward. The second connecting piece 68 drives the second sleeve 611 to move downward synchronously. The second sleeve 611 drives the first sleeve 610 to move smoothly downward along the outside of the punch 69 through a threaded connection. At this time, the hammer 612 is temporarily kept in a relatively static state due to the eccentric constraint of the top tip of the punch 614. As the second sleeve 611 and the first sleeve 610 continue to move downward, the first spring 613 in the upper layer of the inner cavity of the second sleeve 611 is gradually compressed, and the elastic potential energy continues to accumulate. Moreover, the axial downward force applied by the first spring 613 to the hammer 612 increases continuously with the increase of the compression.The axial force is transmitted through the bottom striking end face of the hammer 612 to the tip of the inclined punch 614, causing the punch 614 to produce a slight displacement along its own tilt direction. During this process, the tapered part in the middle of the punch 614 gradually contacts the tapered inner wall below the inner cavity of the second sleeve 611. With the guidance of the tapered surface below the inner cavity of the second sleeve 611, the punch 614 is subjected to a radial centering constraint force, and its tilt angle gradually decreases. At the same time, the punch 614 compresses the externally sleeved second spring 615 until the axis of the punch 614 is completely aligned with the central axis of the punch 69, thus realizing the alignment of the punch 614. The automatic centering process is completed when the sharp tip of the punch 614 is precisely aligned with and inserted into the center through hole at the bottom of the hammer 612, thus completing the centering action. After the punch 614 is centered, its eccentric constraint on the hammer 612 is instantly released, and the elastic potential energy stored in the first spring 613 is rapidly released, generating an instantaneous axial impact force. This force pushes the hammer 612 to move rapidly downward along the central axis. The hammer 612 precisely strikes the top of the punch 614 through its bottom striking end face, efficiently transmitting the impact force to the punch 614. This, in turn, drives the punch 69 to extend downward along the axial direction, performing a precise and sharp punching action on the workpiece surface. The impact simulates the extreme conditions of a fuel dispenser pipe connector being struck and squeezed by a sharp object in actual use. After the impact, the second miniature electric telescopic rod 67 extends, driving the second connector 68 to return to its original position. This causes the second sleeve 611 and the first sleeve 610 to move upwards synchronously. The first spring 613 and the second spring 615 gradually return to their initial relaxed state. Due to the structural characteristic that the bottom surface of the punch 614 is not perpendicular to the central axis of the punch 69, and the combined effect of the rebound force of the second spring 615, the punch 614 returns to its initial tilted posture. Its sharp tip then strikes the bottom of the hammer 612 again. The impact face achieves eccentric contact, fully preparing for the next impact operation. Throughout the impact process, the joint sensors 8 on both sides continuously monitor data such as the pressure, flow rate, and volume of the oil inside the workpiece, capturing in real time whether there is oil leakage or abnormal pressure drop, and transmits the monitoring data to the controller 3. The controller 3 judges and analyzes the workpiece's pressure resistance, resistance to sharp impacts, and sealing reliability according to preset detection standards, completing a single simulated impact test. If multiple parts of the workpiece need to be tested, the above steps can be repeated until the impact test at all preset positions is completed.

[0027] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can 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. A pressure resistance testing device for fuel dispenser pipeline joints, characterized in that, include: Base frame (1); The outer casing (2) is installed on the top outer side of the base frame (1); The controller (3) is installed on the right front of the outer surface of the outer shell (2); The detection mechanism (4) is located at the top of the base frame (1) and inside the outer shell (2); The simulation mechanism (6) is located at the top of the base frame (1) and behind the detection mechanism (4); An oil supply system (7) is installed inside the rear side of the base frame (1), and the oil supply system (7) is electrically connected to the controller (3); The number of connector sensors (8) is two. The two connector sensors (8) are respectively installed on the left and right sides of the top rear of the base frame (1). The connector sensors (8) and the oil supply system (7) are connected through pipelines. The connector sensors (8) and the controller (3) are electrically connected. Two grating sensors (9) are installed on the bottom front side of the left and right sides of the cover shell (2) respectively. The grating sensors (9) and the controller (3) are electrically connected. A track camera (10) is installed inside the housing (2) and above it. The track camera (10) and the controller (3) are electrically connected.

2. The pressure resistance testing device for fuel dispenser pipeline joints according to claim 1, characterized in that, The testing organization (4) includes: The track platform (41) is installed in the middle of the front side of the top of the base frame (1) in the front-rear direction; A linear actuator (42) is mounted on the top of the base frame (1) in the front-rear direction and is located on the left side of the track platform (41). The moving end of the linear actuator (42) is connected to the moving end of the track platform (41). The linear actuator (42) and the controller (3) are electrically connected. The linear drive platform (43) has two linear drive platforms (43). The two linear drive platforms (43) are respectively installed on the top of the base frame (1) in the left and right directions and located on the left and right rear sides of the track platform (41). The linear drive platform (43) and the controller (3) are electrically connected.

3. The pressure resistance testing device for fuel dispenser pipeline joints according to claim 2, characterized in that, The testing facility (4) also includes: The number of connector components (5) is two, and the two connector components (5) are respectively disposed on the top of the moving ends of the left and right linear drive platforms (43); The track platform (41) has a workpiece fixing component on the top of its moving end.

4. The pressure resistance testing device for fuel dispenser pipeline joints according to claim 3, characterized in that, The workpiece fixing component includes: a workpiece bearing and posture adjustment unit (100) and a workpiece clamping and lifting adjustment unit (200). The workpiece bearing and attitude adjustment unit (100) is installed on the top of the moving end of the track platform (41) to provide bottom support for the workpiece to be inspected and to adjust the clamping attitude of the workpiece to be inspected. The workpiece clamping and lifting adjustment unit (200) is fixedly installed on the workpiece bearing and posture adjustment unit (100) to cooperate with the workpiece bearing and posture adjustment unit (100) to clamp and fix the workpiece to be tested, and to adapt to workpieces of different specifications.

5. The pressure resistance testing device for fuel dispenser pipeline joints according to claim 4, characterized in that, The connector component (5) includes: The first outer shell (51) is fixedly installed on the top of the moving end of the linear drive platform (43) in the left-right direction; The second lead screw assembly (52) is installed in the lower part of the inner cavity of the first housing (51) in the left-right direction; The third motor (53) is mounted on the rear side of the outer surface of the second lead screw assembly (52) via a bracket, and the third motor (53) is electrically connected to the controller (3); The first belt assembly (54) has a pulley at one end fixedly installed on the rotating end of the third motor (53), and the pulley at the other end of the first belt assembly (54) passes through the groove opened on the rear side of the first housing (51) and is fixedly connected to the inner end of the screw shaft of the second screw assembly (52). The second limiting component (55) has two sets, with two sets of the second limiting component (55) in each set. The two sets of the second limiting components (55) are respectively installed on the upper and lower sides of the front and rear ends of the inner wall of the first outer shell (51). The movable seat (56) is fixedly installed on the inner side of the limiting end of the two sets of the second limiting components (55) at the front and rear; A straight tube (57) is installed on the outer side of the top of the inner cavity of the movable seat (56) in the left-right direction; One end of the connector tube (58) is fixedly installed on the outer end of the straight tube (57), and the other end of the connector tube (58) can be connected to the connector sensor (8).

6. The pressure resistance testing device for fuel dispenser pipeline joints according to claim 5, characterized in that, The connector component (5) further includes: The key block cylinder (59) is rotatably mounted on the inner side of the top of the inner cavity of the movable seat (56) via a bearing seat in the left and right direction. The straight tube (57) passes through the interior of the key block cylinder (59) and extends out of the inner end of the key block cylinder (59). A key block is provided on the inner side of the outer wall of the key block cylinder (59). The fourth motor (510) is fixedly installed on the inner side of the bottom of the inner cavity of the first housing (51), and the fourth motor (510) is electrically connected to the controller (3); The second belt assembly (511) has a pulley fixedly installed at one end of the rotating end of the fourth motor (510), and the other end of the second belt assembly (511) has a pulley fixedly installed at the right end of the outer surface of the key block cylinder (59). An annular sliding groove disk (512) is sleeved on the inner side of the outer wall of the key block cylinder (59). The inner side of the annular sliding groove disk (512) is provided with a keyway that is adapted to be inserted into the key block of the key block cylinder (59). A sealing gasket (513) is circumferentially mounted on the left side of the annular slide plate (512) and located outside the straight tube (57); The third limiting member (514) is fixedly installed on the upper side of the inner side of the outer surface of the movable seat (56) by a bracket; A toggle roller seat (515) is installed on the top of the limiting end of the third limiting member (514). Rollers are provided on the front and rear sides of the toggle roller seat (515) and are inserted into the outer groove of the annular slide plate (512). The first miniature electric telescopic rod (516) is installed above the inner cavity of the movable seat (56). The telescopic end of the first miniature electric telescopic rod (516) extends out of the outside of the movable seat (56) and is fixedly connected to the outside of the actuating roller seat (515). The first miniature electric telescopic rod (516) is electrically connected to the controller (3).

7. The pressure resistance testing device for fuel dispenser pipeline joints according to claim 6, characterized in that, The simulation mechanism (6) includes: A dual-axis moving platform (61) is fixedly installed on the top of the base frame (1) along the left and right direction by a bracket and is located behind the track platform (41). The dual-axis moving platform (61) and the controller (3) are electrically connected. The fourth limiting component (62) is installed on the lower right side of the movable end of the first housing (51) in the vertical direction; The first electric telescopic rod (63) is mounted on the upper right side of the moving end of the first housing (51) via a bracket, and the first electric telescopic rod (63) is electrically connected to the controller (3); The second housing (64) is installed on the right side of the limiting end of the fourth limiting component (62), and the telescopic end of the first electric telescopic rod (63) is fixedly connected to the top of the second housing (64). The second electric telescopic rod (65) is installed on the upper left side of the inner cavity of the second housing (64), and the second electric telescopic rod (65) is electrically connected to the controller (3); The first connector (66) is fixedly installed at the bottom of the telescopic end of the second electric telescopic rod (65); The second miniature electric telescopic rod (67) is installed on the lower right side of the inner cavity of the second housing (64), and the second miniature electric telescopic rod (67) is electrically connected to the controller (3); The second connector (68) is fixedly installed on the top of the telescopic end of the second miniature electric telescopic rod (67).

8. The pressure resistance testing device for fuel dispenser pipeline joints according to claim 7, characterized in that, The simulation mechanism (6) also includes: The punch (69) is fixedly installed on the right side of the first connector (66) in the vertical direction; The first sleeve (610) is sleeved on the outside of the punch (69) in the vertical direction; The second sleeve (611) is screwed to the outer top of the first sleeve (610) in the vertical direction, and the inner cavity of the second sleeve (611) is hourglass shaped. A hammer (612) is adapted to be inserted into the bottom of the inner cavity of the second sleeve (611), and a through hole is provided at the center of the bottom hammering end face of the hammer (612). The first spring (613) is fixedly installed at one end on the top of the hammer (612), and the other end of the first spring (613) is fixedly connected to the top of the inner wall of the second sleeve (611). Punch (614), the punch (614) adopts a structure design in which the bottom surface is not perpendicular to the central axis of the punch (69). The punch (614) is arranged in a preset inclined posture in the inner cavity of the first sleeve (610) and is located above the punch (69). The second spring (615) is sleeved on the outside of the punch (614).

9. A pressure resistance testing device for fuel dispenser pipeline joints according to claim 8, characterized in that, The top of the punch (614) is pointed and extends into the lower inner cavity of the second sleeve (611), enabling it to make eccentric contact with the bottom hammering end face of the hammer (612), and the contact point is slightly off-center from the axis of the central through hole of the hammer (612). The middle tapered section of the punch (614) remains in non-contact with the top tapered surface of the lower inner cavity of the second sleeve (611).

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