A static electricity test device and method for refueling hose based on fixed-length clamping

Abstract

The present invention relates to the field of electrostatic conductivity testing of refueling hoses, and specifically to a device and method for testing electrostatic conductivity of refueling hoses based on fixed-length clamping, which is arranged on a lift, and the lift has a bottom plate, a top plate, and a lifting drive assembly, and a universal wheel is arranged at the bottom of the bottom plate, and the electrostatic conductivity testing device includes a first clamping assembly and a second clamping assembly arranged on the top plate that can adapt to refueling hoses of different sizes, and a straightening assembly arranged between the first clamping assembly and the second clamping assembly to straighten the refueling hose, and the first clamping assembly and the second clamping assembly are both provided with a connection that can be connected to a multimeter. The present invention is adapted to the refueling hose through the first clamping assembly and the second clamping assembly, and gradually straightens it through the straightening assembly, thereby reducing mechanical stress and ensuring the accuracy of the electrostatic conductivity performance test, and at the same time, the refueling hose is protected by the protective assembly, thereby reducing the influence of external factors on the test results.

Description

Technical Field

[0001] The invention relates to the field of static electricity conduction testing of a refueling hose, and in particular to a static electricity conduction testing device and a testing method for a refueling hose based on fixed-length clamping. Background Art

[0002] The refueling hose may generate static electricity during use. If the static electricity accumulates too much and cannot be released in time, it may cause spark discharge, fire or explosion. Therefore, it is necessary to test the static conductivity of the refueling hose.

[0003] At present, there are some refueling hose static electricity test devices on the market, but they have the following shortcomings:

[0004] 1. Small contact area: Existing testing devices usually use point contact or line contact, with a small contact area, which cannot fully reflect the overall static conductivity performance of the hose.

[0005] 2. Easy to damage the hose: When clamping the hose, some test devices may easily damage the hose due to excessive clamping force or improper clamping method and inability to adapt to hoses of different diameters, thus affecting the conductivity test of the hose.

[0006] The currently disclosed Chinese patent authorization publication number is CN217605979U, which is a detection fixture for an electrostatic tester, including a clamping block and a slot block, wherein cavities are provided on both the front and rear sides of the clamping block, and moving mechanisms are provided inside the two cavities; the moving mechanism includes a first electric telescopic rod, the lower surface of the first electric telescopic rod is fixedly connected to the lower side of the inner wall of the cavity, the output end of the first electric telescopic rod is fixedly connected to a push block, and a turnout is provided on both the left and right sides of the upper side of the inner wall of the cavity, and the front and rear sides of the inner walls of the two turnouts are jointly rotatably connected with a longitudinal connecting rod, the rod walls of the two longitudinal connecting rods are fixedly connected with arc plates, and one side surface of the two arc plates is provided with an elastic mechanism.

[0007] According to the above patent, the arc plate and the push block are retracted and moved, and the product is fixed by the wheels to adapt to products of different sizes. Under the action of the second electric telescopic rod and the electric slide rail, the electrostatic tester detects the surface of the product. However, although the above patent can adapt to products of different sizes, it is impossible to straighten the clamped product after clamping the product, and the electrostatic test result is easily inaccurate due to the bending stress on the product. In addition, the above patent does not have the function of protecting the tested product and is easily affected by the external environment, resulting in unstable and inaccurate test data. Therefore, there is a need for a refueling hose electrostatic test device that can maintain a straight state during the electrostatic test of the refueling hose and reduce interference from the external environment. Summary of the invention

[0008] In view of the problems existing in the existing technology, a static electricity conductivity testing device for a refueling hose based on fixed-length clamping is provided. The device is adapted to the refueling hose through a first clamping component and a second clamping component, and is gradually straightened through a straightening component to reduce mechanical stress and ensure the accuracy of the static electricity conductivity test. At the same time, the refueling hose is protected by a protective component to reduce the influence of external factors on the test results.

[0009] To solve the problems of the prior art, the present invention provides a static electricity conduction testing device for a refueling hose based on fixed-length clamping, which is arranged on a lift, wherein the lift comprises a bottom plate, a top plate and a lifting drive assembly for driving the top plate to perform lifting and lowering movements relative to the bottom plate, a universal wheel is arranged at the bottom of the bottom plate, and the static electricity conduction testing device comprises a first clamping assembly and a second clamping assembly arranged on the top plate and capable of adapting to refueling hoses of different sizes, and a straightening assembly arranged between the first clamping assembly and the second clamping assembly and capable of straightening the refueling hose, the first clamping assembly and the second clamping assembly are made of non-conductive material and do not form an equipotential connection with the top plate, the first clamping assembly and the second clamping assembly are each provided with a wiring connection capable of connecting a multimeter, the straightening assembly can move between the first clamping assembly and the second clamping assembly, and when the refueling hose is clamped by the first clamping assembly and the second clamping assembly and the straightening assembly is started, the straightening assembly gradually moves toward the direction of the second clamping assembly starting from the first clamping assembly, so that the portion of the refueling hose to be tested is in a gradually straightened state.

[0010] Preferably, there is a protective component in the transmission connection between the first clamping component and the straightening component for preventing the external environment from affecting the refueling hose test. When the straightening component is close to the first clamping component, the protective component is in a retracted state, and when the straightening component gradually moves toward the direction of the second clamping component, the protective component is in a gradually expanded state.

[0011] Preferably, the straightening assembly includes an elastic block and a linear drive for driving the elastic block to move, the elastic block is composed of two arc-shaped plates, and a bayonet for the refueling hose to be inserted into the bayonet is formed between the two arc-shaped plates, and the upper end of each arc-shaped plate has a guide portion extending outward, and when the operator presses the refueling hose into the bayonet along the guide portions of the two arc-shaped plates, the two arc-shaped plates are in a deformed state, so that the refueling hose can smoothly enter the bayonet.

[0012] Preferably, a sponge pad is fixedly provided between the two arc-shaped plates to prevent the elastic block from rubbing the refueling hose during movement, and the sponge pad is made of non-conductive material.

[0013] Preferably, the protective component includes two folding curtains symmetrically arranged on both sides thereof along a direction perpendicular to the movement direction of the elastic block, an upper guide rod is provided on the top plate and at the upper end of each folding curtain, the axial direction of the upper guide rod is parallel to the movement direction of the elastic block, the upper end of the folding curtain has an upper sliding sleeve mounted on the upper guide rod, each folding curtain is fixedly connected to the corresponding arc plate, and the arc plate has a fixing clamp fixedly connected to the folding curtain.

[0014] Preferably, a lower guide rod is provided on the top plate and at the lower end of each folding curtain, the axial direction of the lower guide rod is parallel to the axial direction of the upper guide rod, the lower end of the folding curtain has a lower sliding sleeve mounted on the lower guide rod, the lower guide rod is fixedly connected to the top plate, the upper guide rod can move relative to the lower guide rod, and the top plate is provided with a rotating drive that can drive the upper guide rod to move and thus control the opening and closing of the two folding curtains.

[0015] Preferably, the first clamping assembly and the second clamping assembly have the same structure, the first clamping assembly includes a support fixedly arranged on the top plate and a clamp arranged on the support, the clamp consists of a supporting part and two clamping parts, both sides of the support are provided with clamping plates that can rotate toward the direction of the refueling hose, each clamping plate is provided with a clamping part, and a torsion spring is fixedly connected between each clamping plate and the support.

[0016] Preferably, the supporting portion and the clamping portion are both spherical structures, and grooves for the supporting portion and the clamping portion to be rotatably arranged are respectively provided on the support and the clamping plate.

[0017] Preferably, a controller that can be connected to the splint for transmission is provided at the position corresponding to each splint on the support, and the controller has a lever that can rotate around the rotation axis of the splint. The splint has a first extension portion. When the lever pushes the first extension portion, the splint is in an outwardly rotated state. The splint also has a second extension portion. When the lever presses against the second extension portion, the splint is in a positioned state.

[0018] The present invention also provides a method for testing static electricity conduction of a refueling hose based on fixed-length clamping, comprising the following steps:

[0019] S1. An operator fixes the refueling hose using a first clamping assembly and a second clamping assembly;

[0020] S2, start the straightening component to straighten the part of the refueling hose to be tested;

[0021] S3, start the protection component to protect the refueling hose;

[0022] S4. Connect the two wires to the two test ports of the multimeter respectively, and record the test results according to the data of the multimeter.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] 1. The present invention uses the elastic characteristics of the two arc-shaped plates so that the operator can easily put the refueling hose into the bayonet. As the elastic clamp moves along the length direction of the refueling hose, the elastic clamp continuously adjusts the position of the refueling hose to keep it straight.

[0025] Due to the elastic properties of the curved plate, even if it encounters slight bending or twisting during movement, the curved plate can quickly restore its shape, ensuring that the refueling hose always remains in good condition. This improves the flatness of the refueling hose and eliminates test errors caused by bending or twisting.

[0026] 2. The present invention uses two folding curtains to dynamically expand and contract during the movement of the elastic block, and the protective component always covers the top of the refueling hose to prevent external dust, impurities or other pollutants from entering the test area.

[0027] Each folding curtain is fixedly connected to the corresponding arc plate, ensuring that the folding curtain cooperates with the elastic block to protect the refueling hose. The refueling hose is protected while being straightened, which not only improves the accuracy and reliability of the test, but also reduces the impact of external factors on the test results.

[0028] 3. The present invention can adapt to refueling hoses of different sizes through the cooperation of the torsion spring and the clamping plate, so that the refueling hose can be stably and reliably clamped during the placement and removal process to prevent displacement due to external force.

[0029] Since the first clamping assembly and the second clamping assembly have the same structure, they perform consistently during operation and can both provide a stable clamping force, thereby ensuring the stability of the refueling hose during testing and improving the accuracy and efficiency of the test. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a three-dimensional structural schematic diagram of a refueling hose static electricity test device based on fixed-length clamping of the present invention.

[0031] Figure 2 It is a partial three-dimensional structural schematic diagram of a refueling hose static electricity testing device based on fixed-length clamping of the present invention, excluding the elevator.

[0032] Figure 3 The invention discloses a planar cross-sectional view of a straightening component and a protective component of a refueling hose static electricity conduction testing device based on fixed-length clamping.

[0033] Figure 4 The invention discloses a three-dimensional structural cross-sectional view of a straightening component and a protective component of a refueling hose static electricity conduction testing device based on fixed-length clamping.

[0034] Figure 5 It is a three-dimensional structural schematic diagram of a first clamping component, a second clamping component and a straightening component of a refueling hose static electricity test device based on fixed-length clamping of the present invention.

[0035] Figure 6 It is a plan view of the tested portion of a refueling hose of the refueling hose electrostatic conduction testing device based on fixed-length clamping of the present invention.

[0036] Figure 7 It is a three-dimensional structural schematic diagram of a first clamping component and a refueling hose of a refueling hose electrostatic conduction testing device based on fixed-length clamping of the present invention.

[0037] Figure 8 It is a partial planar cross-sectional view of a first clamping component of a refueling hose electrostatic conduction testing device based on fixed-length clamping of the present invention and a refueling hose.

[0038] Fig. 9 It is a partial three-dimensional structural sectional view of a first clamping component of a refueling hose electrostatic conduction testing device based on fixed-length clamping of the present invention and a refueling hose.

[0039] Fig.10 The present invention is a schematic diagram of the three-dimensional structure of a lever and a clamping plate of a refueling hose static electricity conduction testing device based on fixed-length clamping.

[0040] The numbers in the figure are: 1. elevator; 11. bottom plate; 111. universal wheel; 12. top plate; 13. lifting drive assembly; 2. refueling hose; 3. first clamping assembly; 31. wiring; 32. support; 33. fixture; 331. support part; 332. clamping part; 3321. clamping plate; 3322. torsion spring; 333. controller; 3331. lever; 3332. first extension part; 3333. second extension part; 4. second clamping assembly; 5. straightening assembly; 51. elastic block; 511. arc plate; 5111. fixing clamp; 512. guide part; 513. sponge pad; 52. guide rail; 6. protection assembly; 61. folding curtain; 611. upper sliding sleeve; 612. lower sliding sleeve; 62. upper guide rod; 63. lower guide rod; 64. rotary drive. DETAILED DESCRIPTION

[0041] In order to further understand the features, technical means, specific objectives and functions of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0042] See also Figure 1-Figure 6As shown, a static electricity conduction test device for a refueling rubber tube based on fixed-length clamping is arranged on an elevator 1, wherein the elevator 1 has a bottom plate 11, a top plate 12, and a lifting drive assembly 13 for driving the top plate 12 to perform lifting motion relative to the bottom plate 11, and a universal wheel 111 is arranged at the bottom of the bottom plate 11. The static electricity conduction test device includes a first clamping assembly 3 and a second clamping assembly 4 arranged on the top plate 12 and capable of adapting to refueling rubber tubes 2 of different sizes, and a straightening assembly 5 arranged between the first clamping assembly 3 and the second clamping assembly 4 for straightening the refueling rubber tube 2, the first clamping assembly 3 and the second clamping assembly 4. The holding component 3 and the second clamping component 4 are made of non-conductive material and no equipotential connection is formed between the top plate 12. The first clamping component 3 and the second clamping component 4 are each provided with a wiring 31 that can be connected to a multimeter. The straightening component 5 can move between the first clamping component 3 and the second clamping component 4. When the refueling hose 2 is clamped by the first clamping component 3 and the second clamping component 4 and the straightening component 5 is started, the straightening component 5 gradually moves toward the direction of the second clamping component 4 starting from the first clamping component 3, so that the part of the refueling hose 2 to be tested is in a gradually straightened state.

[0043] When it is necessary to conduct an electrostatic conductivity test on the refueling hose 2, the refueling hose 2 must first be placed on the lift 1. Prior to this, the height of the top plate 12 is adjusted by the lifting drive assembly 13 to adapt to refueling trucks of different heights. And because a universal wheel 111 is provided at the bottom of the bottom plate 11 of the lift 1, it is convenient to move the entire test device, thereby facilitating the first clamping assembly 3 and the second clamping assembly 4 to fix the refueling hose 2. Next, place the refueling hose 2 into the first clamping assembly 3 and the second clamping assembly 4. The interval between the first clamping assembly 3 and the second clamping assembly 4 is set to one meter, and the refueling hose 2 is tested with each meter as a test section until the refueling hose 2 is completely tested.

[0044] After the refueling hose 2 is clamped by the first clamping assembly 3 and the second clamping assembly 4, the straightening assembly 5 is started to straighten the refueling hose 2 to ensure that it is in the best state during the test. Specifically, the straightening assembly 5 starts from the first clamping assembly 3 and gradually moves toward the direction of the second clamping assembly 4. In this process, the straightening assembly 5 gradually straightens the refueling hose 2.

[0045] When the refueling hose 2 is clamped by the first clamping assembly 3 and the second clamping assembly 4, ensure that the length of the clamped portion of the refueling hose 2 is the length required to be tested of the refueling hose 2. Since the first clamping assembly 3 and the second clamping assembly 4 are both provided with a connection 31 that can be connected to a multimeter, the resistance value of the refueling hose 2 during the test can be measured. Connecting these two connections 31 to the multimeter ensures the accuracy and reliability of the test data.

[0046] When starting the static conductivity test, connect the wiring 31 of the first clamping assembly 3 and the second clamping assembly 4 to the two test ports of the multimeter respectively. Turn on the multimeter and select the appropriate resistance measurement gear. Read the resistance value displayed on the multimeter and record the test results. According to the test results, determine whether the static conductivity performance of the refueling hose 2 meets the standard requirements. If the resistance value exceeds the standard range, further inspection and processing are required. During the test, the first clamping assembly 3 and the second clamping assembly 4 always remain in a clamping state to ensure that the refueling hose 2 remains stable during the test.

[0047] When the test is completed, turn off the multimeter and reset the straightening assembly 5, loosen the first clamping assembly 3 and the second clamping assembly 4, and continue to perform the static conductivity performance test on the next section of the refueling hose 2.

[0048] See also Figure 1-Figure 4 As shown, there is a protective component 6 in transmission connection between the first clamping component 3 and the straightening component 5 for preventing the external environment from affecting the test of the refueling hose 2. When the straightening component 5 is close to the first clamping component 3, the protective component 6 is in a retracted state, and when the straightening component 5 gradually moves toward the direction of the second clamping component 4, the protective component 6 is in a gradually expanded state.

[0049] When the straightening component 5 is close to the first clamping component 3 , the protective component 6 is in a retracted state, and the refueling hose 2 can be placed on the first clamping component 3 and the second clamping component 4 .

[0050] As the straightening component 5 gradually moves toward the second clamping component 4, the protective component 6 gradually changes from a contracted state to an expanded state. In this process, the structure of the protective component 6 gradually stretches to form a dynamic protective barrier. This blocks the influence of the external environment and ensures that the test conditions of the refueling hose 2 in different test sections are always consistent, thereby improving the repeatability and reliability of the test results.

[0051] Specifically, when the straightening component 5 starts to move from the first clamping component 3, the front end of the protection component 6 gradually expands to cover the surface of the refueling hose 2. As the straightening component 5 continues to move, the expanded portion of the protection component 6 gradually increases until the straightening component 5 reaches the position of the second clamping component 4, at which time the protection component 6 is fully expanded to form a complete protective barrier.

[0052] See also Figure 1-Figure 5As shown, the straightening assembly 5 includes an elastic block 51 and a linear driver for driving the elastic block 51 to move, the elastic block 51 is composed of two arc plates 511, and a bayonet for the refueling hose 2 to be inserted therein is formed between the two arc plates 511, and the upper end of each arc plate 511 has a guide portion 512 extending outward, and when the operator presses the refueling hose 2 into the bayonet along the guide portions 512 of the two arc plates 511, the two arc plates 511 are in a deformed state, so that the refueling hose 2 can smoothly enter the bayonet.

[0053] A guide rail 52 is fixedly provided on the top plate 12 and is located between the first clamping assembly 3 and the second clamping assembly 4 for the elastic block 51 to slide. The linear drive is not shown in the figure.

[0054] When the operator presses the refueling hose 2 into the bayonet along the guide portions 512 of the two arc plates 511, the two arc plates 511 gradually deform. When pressure is applied to the refueling hose 2, the arc plates 511 slightly open outwards, thereby forming a larger entrance space, so that the refueling hose 2 can easily slide into the bayonet without being hindered.

[0055] As the refueling hose 2 gradually goes deeper into the bayonet, the opening degree of the arc plate 511 gradually decreases and finally returns to the original state, thereby firmly fixing the refueling hose 2 in the bayonet.

[0056] When the refueling hose 2 completely enters the bayonet, the linear drive starts to work, driving the elastic block 51 to move along the length direction of the refueling hose 2. During this process, the elastic block 51 continuously adjusts the position of the refueling hose 2 to keep it straight. Due to the elastic characteristics of the arc plate 511, even if it encounters slight bending or twisting during the movement, the arc plate 511 can quickly restore its shape to ensure that the refueling hose 2 always maintains a good state. The flatness of the refueling hose 2 is improved, and the error in the test process is reduced.

[0057] See also Figure 3-Figure 5 As shown, a sponge pad layer 513 is fixedly provided between the two arc-shaped plates 511 to prevent the elastic block 51 from rubbing the refueling hose 2 during movement, and the sponge pad layer 513 is made of non-conductive material.

[0058] The function of the sponge pad 513 is to reduce the direct contact between the elastic block 51 and the refueling hose 2, and to avoid damage to the surface of the refueling hose 2 caused by friction. The soft material of the sponge pad 513 can effectively buffer and absorb the impact force generated during the movement, and protect the surface of the refueling hose 2 from damage.

[0059] See also Figure 1-Figure 4As shown, the protective component 6 includes two folding curtains 61 symmetrically arranged on both sides thereof along a moving direction perpendicular to the elastic block 51, an upper guide rod 62 is provided on the top plate 12 and located at the upper end of each folding curtain 61, the axial direction of the upper guide rod 62 is parallel to the moving direction of the elastic block 51, the upper end of the folding curtain 61 has an upper sliding sleeve 611 sleeved on the upper guide rod 62, each folding curtain 61 is fixedly connected to the corresponding arc plate 511, and the arc plate 511 has a fixing clamp 5111 fixedly connected to the folding curtain 61.

[0060] When the operator starts the linear drive to drive the elastic block 51 to move along the length direction of the refueling hose 2, the two folding curtains 61 will expand or contract accordingly according to the moving direction of the elastic block 51. As the folding curtains 61 gradually expand, a protective barrier will be formed to protect the refueling hose 2, covering the top of the refueling hose 2 to prevent the test area from being affected by the external environment. This not only improves the accuracy of the test, but also reduces the impact of external factors on the test results.

[0061] See also Figure 1-Figure 4 As shown, a lower guide rod 63 is provided on the top plate 12 and at the lower end of each folding curtain 61, and the axial direction of the lower guide rod 63 is parallel to the axial direction of the upper guide rod 62. The lower end of the folding curtain 61 has a lower sliding sleeve 612 mounted on the lower guide rod 63. The lower guide rod 63 is fixedly connected to the top plate 12, and the upper guide rod 62 can move relative to the lower guide rod 63. A rotating driver 64 is provided on the top plate 12, which can drive the upper guide rod 62 to move, thereby controlling the opening and closing of the two folding curtains 61.

[0062] When the operator starts the rotary driver 64 to move the two upper guide rods 62 away from each other, the two folding curtains 61 are in an open state, which makes it easy for the operator to easily put the refueling hose 2 between the folding curtains 61 without any obstacles. The operator can easily connect the refueling hose 2 with the first clamping assembly 3, the second clamping assembly 4 and the elastic block 51 to ensure that the refueling hose 2 is correctly placed in place.

[0063] Once the refueling hose 2 is placed, the operator starts the rotary driver 64 again to move the two upper guide rods 62 closer to each other. At this time, the two folding curtains 61 gradually close to form a closed protective barrier. This reduces the impact of the external environment on the refueling hose 2 during the test, thereby improving the accuracy and reliability of the test.

[0064] See also Figure 1-Figure 10As shown, the first clamping assembly 3 and the second clamping assembly 4 have the same structure. The first clamping assembly 3 includes a support 32 fixedly arranged on the top plate 12 and a clamp 33 arranged on the support 32. The clamp 33 is composed of a supporting portion 331 and two clamping portions 332. Both sides of the support 32 are provided with clamps 3321 that can rotate toward the direction of the refueling hose 2. Each clamp 3321 is provided with a clamping portion 332. A torsion spring 3322 is also fixedly connected between each clamp 3321 and the support 32.

[0065] When the refueling hose 2 is placed on the support portion 331, the clamping plate 3321 is released, and under the force of the torsion spring 3322, the clamping plate 3321 gradually rotates inward until the clamping portion 332 contacts the refueling hose 2. The elastic force of the torsion spring 3322 causes the clamping plate 3321 to apply pressure inward to tightly clamp the refueling hose 2. This ensures the stability of the refueling hose 2 during the test and prevents it from shifting due to external force.

[0066] When the refueling hose 2 needs to be released, the operator pushes the clamping plate 3321 to rotate it outward to overcome the elastic force of the torsion spring 3322. At this time, the clamping portion 332 will gradually loosen the refueling hose 2, and the operator can easily take the refueling hose 2 out of the clamp 33.

[0067] Since the first clamping assembly 3 and the second clamping assembly 4 have the same structure, the first clamping assembly 3 and the second clamping assembly 4 also have the same actions during operation. Whether placing the refueling hose 2 or taking out the refueling hose 2, the first clamping assembly 3 and the second clamping assembly 4 can provide a stable clamping force to ensure the stability of the refueling hose 2 during the test.

[0068] See also Figure 7-10 As shown, the support portion 331 and the clamping portion 332 are both spherical structures, and grooves for the support portion 331 and the clamping portion 332 to be rotatably disposed are respectively provided on the support seat 32 and the clamping plate 3321 .

[0069] Since the clamping portion 332 and the supporting portion 331 are both spherical structures, the wear on the refueling hose 2 is reduced during the process of straightening the refueling hose 2 or moving the test device as a whole. In addition, the multi-point contact with the refueling hose 2 also makes the refueling hose 2 more evenly stressed during the clamping process, avoiding deformation or damage caused by excessive local stress.

[0070] The multi-point contact clamping method also means that the current can be more evenly distributed on the surface of the refueling hose 2, reducing the local current density and thus reducing the resistance. This helps to more accurately test the static electricity conduction of the refueling hose 2. It reduces the fluctuation of the test results caused by poor contact and improves the stability and repeatability of the test.

[0071] See also Figure 7-10 As shown, a controller 333 capable of being transmission-connected to the splint 3321 is provided at a position corresponding to each splint 3321 on the support 32, and the controller 333 has a lever 3331, and the lever 3331 can rotate around the rotation axis of the splint 3321, and the splint 3321 has a first extension portion 3332, and when the lever 3331 pushes the first extension portion 3332, the splint 3321 is in an outwardly rotated state, and the splint 3321 also has a second extension portion 3333, and when the lever 3331 presses the second extension portion 3333, the splint 3321 is in a positioned state.

[0072] When the controller 333 drives the lever 3331 to push the first extension portion 3332 on the clamping plate 3321, the clamping plate 3321 will be in an outwardly rotated state, so that the clamping plate 3321 is away from the refueling hose 2, which is convenient for the operator to place the refueling hose 2 on the support portion 331, or to easily remove the refueling hose 2 after the test is completed.

[0073] When the controller 333 drives the lever 3331 to press against the second extension 3333 on the clamping plate 3321, the clamping plate 3321 will be in a positioned state. This ensures that the clamping plate 3321 can firmly clamp the refueling hose 2 to prevent it from shaking during the test. The positioning function of the clamping plate 3321 is achieved through the cooperation between the second extension 3333 and the lever 3331, which keeps the clamping plate 3321 stable. This improves the stability of the refueling hose 2 during the test.

[0074] A method for testing static electricity of a refueling hose based on fixed-length clamping is applied to a device for testing static electricity of a refueling hose based on fixed-length clamping, and comprises the following steps:

[0075] S1, the operator uses the first clamping assembly 3 and the second clamping assembly 4 to fix the refueling hose 2;

[0076] S2, start the straightening component 5 to straighten the part of the refueling hose 2 to be tested;

[0077] S3, start the protection component 6 to protect the refueling hose 2;

[0078] S4. Connect the two connections 31 to the two test ports of the multimeter respectively, and record the test results according to the data of the multimeter.

[0079] The present invention adapts the first clamping component 3 and the second clamping component 4 to the refueling hose 2, so that the refueling hose 2 is positioned. Then, the straightening component 5 gradually straightens the refueling hose 2 before testing, ensuring that the refueling hose 2 is in a straight state during the test, thereby reducing mechanical stress, avoiding changes in the internal structure caused by bending, ensuring the accuracy of the static conductivity performance test, and eliminating the test error caused by bending or twisting.

[0080] During the entire test process, two folding curtains 61 are used to cover the top of the refueling hose 2 to prevent external dust, impurities or other pollutants from entering the test area, which not only improves the accuracy and reliability of the test, but also reduces the impact of external factors on the test results.

[0081] The above embodiments only express one or several implementation modes of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the protection scope of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. A refueling hose static electricity test device based on fixed-length clamping, arranged on a lifter (1), the lifter (1) comprising a bottom plate (11), a top plate (12) and a lift drive assembly (13) for driving the top plate (12) to perform a lifting motion relative to the bottom plate (11), and a universal wheel (111) is arranged at the bottom of the bottom plate (11); It is characterized in that The electrostatic conductive test device includes: A first clamping assembly (3) and a second clamping assembly (4) arranged on the top plate (12) and capable of adapting to refueling hoses (2) of different sizes; and A straightening component (5) disposed between the first clamping component (3) and the second clamping component (4) for straightening the refueling hose (2); The first clamping assembly (3) and the second clamping assembly (4) are each provided with a connection (31) capable of being connected to a multimeter; The straightening assembly (5) is capable of moving between the first clamping assembly (3) and the second clamping assembly (4); When the refueling hose (2) is clamped by the first clamping assembly (3) and the second clamping assembly (4) and the straightening assembly (5) is activated, the straightening assembly (5) gradually moves toward the second clamping assembly (4) starting from the first clamping assembly (3), so that the portion of the refueling hose (2) to be tested is in a gradually straightened state.

2. The static electricity test device for a refueling hose based on fixed-length clamping according to claim 1 is characterized in that: A protective component (6) is connected between the first clamping component (3) and the straightening component (5) to prevent the external environment from affecting the test of the refueling hose (2). When the straightening component (5) approaches the first clamping component (3), the protective component (6) is in a retracted state, and when the straightening component (5) gradually moves toward the direction of the second clamping component (4), the protective component (6) is in a gradually expanded state.

3. The static electricity test device for a refueling hose based on fixed-length clamping according to claim 2 is characterized in that: The straightening assembly (5) comprises an elastic block (51) and a linear driver for driving the elastic block (51) to move. The elastic block (51) is composed of two arc-shaped plates (511). A slot is formed between the two arc-shaped plates (511) for the refueling hose (2) to be inserted therein. The upper end of each arc-shaped plate (511) has a guide portion (512) extending outward. When an operator presses the refueling hose (2) into the slot along the guide portions (512) of the two arc-shaped plates (511), the two arc-shaped plates (511) are in a deformed state, so that the refueling hose (2) can smoothly enter the slot.

4. The static electricity test device for a refueling hose based on fixed-length clamping according to claim 3 is characterized in that: A sponge cushion layer (513) is fixedly provided between the two arc-shaped plates (511) to prevent the elastic block (51) from rubbing against the refueling hose (2) during movement, and the sponge cushion layer (513) is made of a non-conductive material.

5. The static electricity test device for a refueling hose based on fixed-length clamping according to claim 3 is characterized in that: The protection component (6) comprises two folding curtains (61) symmetrically arranged on both sides of the folding curtain (61) along a direction perpendicular to the movement direction of the elastic block (51); an upper guide rod (62) is provided on the top plate (12) and located at the upper end of each folding curtain (61); the axial direction of the upper guide rod (62) is parallel to the movement direction of the elastic block (51); the upper end of the folding curtain (61) comprises an upper sliding sleeve (611) sleeved on the upper guide rod (62); each folding curtain (61) is fixedly connected to a corresponding arc plate (511), and the arc plate (511) comprises a fixing clamp (5111) fixedly connected to the folding curtain (61).

6. The static electricity test device for a refueling hose based on fixed-length clamping according to claim 5 is characterized in that: A lower guide rod (63) is provided on the top plate (12) and at the lower end of each folding curtain (61), the axial direction of the lower guide rod (63) is parallel to the axial direction of the upper guide rod (62), the lower end of the folding curtain (61) has a lower slide sleeve (612) sleeved on the lower guide rod (63), the lower guide rod (63) is fixedly connected to the top plate (12), the upper guide rod (62) can move relative to the lower guide rod (63), and a rotating driver (64) is provided on the top plate (12) which can drive the upper guide rod (62) to move so as to control the opening and closing of the two folding curtains (61).

7. The static electricity test device for a refueling hose based on fixed-length clamping according to claim 1 is characterized in that: The first clamping assembly (3) and the second clamping assembly (4) have the same structure. The first clamping assembly (3) includes a support (32) fixedly arranged on the top plate (12) and a clamp (33) arranged on the support (32). The clamp (33) is composed of a supporting portion (331) and two clamping portions (332). Both sides of the support (32) are provided with a clamping plate (3321) that can rotate toward the direction of the refueling hose (2). Each clamping plate (3321) is provided with a clamping portion (332). A torsion spring (3322) is also fixedly connected between each clamping plate (3321) and the support (32).

8. The static electricity test device for a refueling hose based on fixed-length clamping according to claim 7 is characterized in that: The supporting portion (331) and the clamping portion (332) are both spherical structures, and grooves for the supporting portion (331) and the clamping portion (332) to be rotatably arranged are respectively provided on the support seat (32) and the clamping plate (3321).

9. The static electricity test device for a refueling hose based on fixed-length clamping according to claim 7 is characterized in that: A controller (333) capable of being transmission-connected to the splint (3321) is provided at a position corresponding to each splint (3321) on the support (32); the controller (333) has a lever (3331); the lever (3331) can rotate around the rotation axis of the splint (3321); the splint (3321) has a first extension portion (3332); when the lever (3331) pushes the first extension portion (3332), the splint (3321) is in an outwardly rotating state; the splint (3321) also has a second extension portion (3333); when the lever (3331) presses against the second extension portion (3333), the splint (3321) is in a positioned state.

10. A method for testing static electricity of a refueling hose based on fixed-length clamping, applied to a device for testing static electricity of a refueling hose based on fixed-length clamping as claimed in any one of claims 1 to 9, characterized in that: The following steps are involved: S1. An operator uses a first clamping assembly (3) and a second clamping assembly (4) to fix the refueling hose (2); S2, starting the straightening component (5) to straighten the portion of the refueling hose (2) to be tested; S3, starting the protection component (6) to protect the refueling hose (2) therein; S4. Connect the two wires (31) to two test ports of a multimeter respectively, and record the test results according to the data of the multimeter.

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