Safety shoe insulativity detection device

Abstract

The invention discloses a safety shoe insulativity detection device, and belongs to the technical field of safety shoe detection.The safety shoe insulativity detection device comprises a base, a detection box is fixedly installed at the top end of the base, a shoe sample body is arranged at the top end of the detection box, a soaking sponge plate is arranged between the electric output end of the detection box and the shoe sample body, and a positioning mechanism is arranged at the top end of the base; according to the shoe pattern detection device, the shoe pattern body and a shoe sole are separated through the main air bag, the sealed space is vacuumized through the air pump, air at the contact part can be effectively exhausted, the detection efficiency is improved, and the detection accuracy is improved. The detection end of the detection box is completely attached to the vamp through the soaked sponge plate between the shoe sample bodies, so that a current path is more uniform, the local electric leakage phenomenon caused by poor contact is avoided, the accuracy of an insulating property detection result is remarkably improved, and the misjudgment condition is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of safety shoes detection, and particularly relates to a safety shoes insulation detection device. BACKGROUND

[0002] Safety shoes are important protective equipment for protecting the feet of workers in specific working environments, and the insulation performance thereof is directly related to the safety of the users, especially in the power and chemical industries which have extremely high requirements for electrical safety. Therefore, it is crucial to accurately detect the insulation of safety shoes. In the detection process of the traditional safety shoes insulation detection method, air bubbles or gaps are easily generated at the contact part when the electrode contacts the shoe surface due to factors such as shoe manufacturing process or surface condition. The existence of these air bubbles and gaps will cause local leakage, so that the current cannot uniformly pass between the shoe surface and the conductive medium, thereby interfering with the detection result, causing misjudgment, and failing to truly reflect the insulation performance of the safety shoes. SUMMARY

[0003] The present application aims to provide a safety shoes insulation detection device to solve the problems in the background.

[0004] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a safety shoes insulation detection device, comprising a base, a detection box fixedly installed at the top end of the base, a shoe sample body provided at the top end of the detection box, and a water-soaked sponge plate provided between the electrical output end of the detection box and the shoe sample body, a positioning mechanism provided at the top end of the base, an expansion assembly provided at the output end of the positioning mechanism, the expansion assembly comprising a plurality of copper top plates provided inside the shoe sample body, an air seal mechanism provided at the top end of the detection box, the air seal mechanism comprising an air pump installed at the top end of the base, an installation plate fixedly installed at the top end of the detection box, a sealing assembly provided on the surface of the installation plate, the sealing assembly comprising a main air bag provided in the middle of the installation plate and used for sealing the bottom end of the shoe sample body, an air pump fixedly installed at the top end of the base, an air inlet pipe in communication with the inside of the detection box at the input end of the air pump, and an air outlet pipe in communication with the main air bag at the output end of the air pump.

[0005] As a preferred technical scheme of the present application, a protective plate is fixedly installed at the top end of the base, a baffle for supporting the main air bag is fixedly installed at the top end of the detection box, and a plurality of limiting plates for limiting the main air bag are fixedly installed on the inner wall of the baffle.

[0006] As a preferred technical scheme of the present application, an air suction plate for adsorbing the inside of the space sealed by the main air bag is fixedly installed on the inner wall of the installation plate, the air inlet pipe is installed in communication with the air suction plate, and a filter box for filtering gas is provided on the air inlet pipe.

[0007] As a preferred technical scheme of the present application, the inside of the main air bag is provided with an auxiliary air bag, the inside of the auxiliary air bag and the inside of the shoe sample body are provided with magnetic plates, one end of the auxiliary air bag is communicated with the output end of the air pump, and an elastic rubber ring is arranged between the auxiliary air bag and the main air bag.

[0008] As a preferred technical scheme of the present application, the air outlet pipe is provided with a ball assembly, the ball assembly comprises a ball valve body installed on the air outlet pipe, a fixed frame is fixedly installed in the ball valve body, and an elastic gasket with pressure deformation characteristics is installed on the ball valve body close to the air outlet of the air outlet pipe.

[0009] As a preferred technical scheme of the present application, the top end of the base is fixedly provided with a support frame, the top end of the support frame is provided with a positioning mechanism, the positioning mechanism comprises a moving assembly arranged at the top end of the support frame, the moving assembly comprises two threaded sleeves rotatably installed at the top end of the support frame, a screw rod is screwedly installed in the threaded sleeve, the bottom end of the screw rod is fixedly provided with a sliding rod, the sliding rod slidably penetrates through the support frame, and the copper top plate is arranged at the free end of the screw rod.

[0010] As a preferred technical scheme of the present application, the bottom end of the screw rod is provided with an expansion assembly, the expansion assembly comprises a fixed rod installed at the bottom end of the screw rod, a plurality of telescopic rods are fixedly installed on the outer surface of the fixed rod, the copper top plate is fixedly installed at the free end of the telescopic rod, and a copper pressing plate for pressing the shoe sample body is fixedly installed at the bottom end of the fixed rod.

[0011] As a preferred technical scheme of the present application, the top end of the support frame is fixedly provided with a motor, the output shaft of the motor is fixedly provided with a roller, the top end of the support frame is rotatably provided with a pressing rod, a belt is sleeved between the two threaded sleeves, and one end of the belt slidably passes between the pressing rod and the roller.

[0012] As a preferred technical scheme of the present application, the inside of the shoe sample body is provided with an internal auxiliary mechanism, the internal auxiliary mechanism comprises an air cylinder installed on the outer surface of the fixed rod, the fixed rod is provided with an annular rubber tube in the inside of the shoe sample body, the inside of the annular rubber tube is provided with a magnetic plate which has a mutual adsorption effect with the inside of the auxiliary air bag, the air cylinder is communicated with the annular rubber tube, the output end of the air pump is communicated with a connecting pipe, the connecting pipe is communicated with the air cylinder through a hose, the top end of the support frame is fixedly provided with a spring, the bottom end of the spring is fixedly provided with a top ring, and the hose slidably penetrates through the top ring.

[0013] As a preferred technical scheme of the present application, the inside of the detection box is provided with a vacuum degree sensor, a leakage current monitor and a temperature compensation device, and the detection ends of the vacuum degree sensor, the leakage current monitor and the temperature compensation device are located at the top end of the detection box close to the shoe sample body.

[0014] Compared with the prior art, the present application has the following advantages: 1、The device can effectively exclude air at the contact position, so that the detection end of the detection box is completely attached to the shoe upper through the soaked sponge plate between the shoe sample bodies, thereby making the current path more uniform, avoiding local leakage caused by poor contact, and significantly improving the accuracy of the insulation detection result and reducing the occurrence of misjudgment.

[0015] 2、The device creates a vacuum environment that can effectively reduce the influence of these external factors, in a vacuum state, air humidity is reduced, and impurities such as dust are difficult to enter the detection area, making the current conduction more stable, and the detection result is not disturbed by the fluctuation of the external environment, especially suitable for scenes with high detection accuracy requirements, providing reliable environmental conditions for accurate evaluation of the insulation performance of safety shoes.

[0016] 3、The positioning mechanism and expansion assembly in the device can accurately position and fix the shoe sample body, and the copper top plate and copper pressure plate in the expansion assembly can apply uniform pressure to the inside of the shoe sample body, which can ensure that the shoe sample body remains stable during detection, and at the same time makes the conductive medium fully contact with the shoe upper, covering all parts of the shoe upper, avoiding detection dead angles, and achieving comprehensive detection of the insulation performance of safety shoes, improving the reliability of the detection.

[0017] 4、The main air bag and auxiliary air bag in the air sealing mechanism cooperate with each other to form a good sealing structure, the main air bag is used to seal the bottom end of the shoe sample body, and the magnetic plate inside the auxiliary air bag interacts with the magnetic plate inside the shoe sample body, further enhancing the tightness of the sealing. In addition, when the main air bag leaks, the auxiliary air bag can temporarily achieve sealing at this time, and this ingenious air sealing mechanism design can effectively prevent gas leakage and maintain the vacuum state of the detection area, providing protection for accurate detection.

[0018] 5、The vacuum degree sensor, the leakage current monitor and the temperature compensation device are integrated in the application, the environmental parameters can be fed back in real time, the vacuum degree sensor can monitor the vacuum degree of the detection area, the vacuum effect can be ensured to meet the requirements, the leakage current monitor can monitor the current leakage in real time, the insulation performance problems can be found in time, and the temperature compensation device can automatically correct the detection data according to the change of the environmental temperature, the influence of temperature on the detection result is eliminated, the detection result can be automatically adjusted and corrected according to the actual situation, and the accuracy and reliability of the detection result are improved. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is the overall structure schematic diagram of the application; Figure 2 It is the support frame structure schematic diagram of the application; Figure 3 It is the pressure rod structure schematic diagram of the application; Figure 4 It is the magnetic plate structure schematic diagram of the application; Figure 5 It is the air pump structure schematic diagram of the application; Figure 6 It is the ball valve body structure schematic diagram of the application; Figure 7 It is the sealing assembly structure schematic diagram of the application; Figure 8 It is the main air bag internal structure schematic diagram of the application.

[0020] In the figure: 1, base; 2, guard plate; 3, detection box; 4, shoe sample body; 5, support frame; 6, positioning mechanism; 61, moving assembly; 611, screw rod; 612, sliding rod; 613, threaded sleeve; 614, belt; 615, pressure rod; 616, roller; 617, motor; 62, expansion assembly; 621, fixed rod; 622, telescopic rod; 623, copper top plate; 624, copper pressing plate; 7, air seal mechanism; 71, mounting plate; 72, sealing assembly; 721, main air bag; 722, auxiliary air bag; 723, magnetic plate; 724, elastic rubber ring; 73, limiting plate; 74, baffle; 75, air suction plate; 76, filter box; 77, air inlet pipe; 78, air pump; 79, ball assembly; 791, ball valve body; 792, fixed frame; 793, elastic gasket; 710, air outlet pipe; 711, inner auxiliary mechanism; 7111, connecting pipe; 7112, hose; 7113, air cylinder; 7114, top ring; 7115, spring; 7116, annular rubber tube; 8, water-soaked sponge plate. DETAILED DESCRIPTION

[0021] 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.

[0022] Please see Figures 1-8 This invention provides a device for testing the insulation properties of safety shoes, including a base 1, a test box 3 fixedly installed at the top of the base 1, a shoe sample 4 disposed at the top of the test box 3, and a water-soaked sponge plate 8 disposed between the electrical output terminal of the test box 3 and the shoe sample 4. A positioning mechanism 6 is disposed at the top of the base 1, and an expansion component 62 is disposed at the output terminal of the positioning mechanism 6. The expansion component 62 includes multiple copper top plates 623 disposed inside the shoe sample 4. An air sealing mechanism 7 is disposed at the top of the test box 3, and the air sealing mechanism 7 includes an air pump 78 installed at the top of the base 1. An mounting plate 71 is fixedly installed at the top of the test box 3, and a sealing component 72 is disposed on the surface of the mounting plate 71. The sealing component 72 includes a main airbag 721 disposed in the middle of the mounting plate 71 for sealing the bottom of the shoe sample 4. An air pump 78 is fixedly installed at the top of the base 1. The input terminal of the air pump 78 is connected to the inside of the test box 3 through an air inlet pipe 77, and the output terminal of the air pump 78 is connected to the main airbag 721 through an air outlet pipe 710.

[0023] The test chamber 3 has a shoe sample 4 placed on top. A water-soaked sponge plate 8 is placed between the electrical output terminal of the test chamber 3 and the shoe sample 4 as a conductive medium. An air pump 78 is connected to the inside of the test chamber 3 through an air inlet pipe 77 and to the main airbag 721 through an air outlet pipe 710. The main airbag 721 is located in the middle of the mounting plate 71 to seal the bottom of the shoe sample 4. By pumping air or inflating air, the main airbag 721 and the bottom of the shoe sample 4 are sealed and the test environment is controlled, which can initially realize the insulation test function of work shoes. At the same time, the space between the main airbag 721 and the shoe sample 4 can be evacuated through the air inlet pipe 77. Vacuuming removes air and makes the water-soaked sponge plate 8 completely adhere to the shoe surface, ensuring a uniform current path and avoiding misjudgment due to poor contact. Furthermore, the vacuum environment reduces the influence of external factors such as air humidity and dust on current conduction, making it particularly suitable for high-precision test scenarios.

[0024] In some embodiments, a protective plate 2 is fixedly installed on the top of the base 1, and a baffle 74 for supporting the main airbag 721 is fixedly installed on the top of the detection box 3. A plurality of limiting plates 73 for limiting the main airbag 721 are fixedly installed on the inner wall of the baffle 74.

[0025] The protective plate 2 enhances the stability and safety of the device and prolongs the service life of the device; the baffle 74 is installed at the top end of the detection box 3 and is used to support the main air bag 721; the limiting plate 73 on the inner wall of the baffle 74 limits the main air bag 721, prevents the main air bag 721 from deviating or over-expanding and shrinking during the inflation and deflation process, ensures the stability of the sealing effect, and improves the detection reliability.

[0026] In some embodiments, the inner wall of the mounting plate 71 is fixedly installed with an air suction plate 75 for adsorbing the gas inside the sealed space of the main air bag 721; the air suction plate 75 is in communication with the air inlet pipe 77; and the air inlet pipe 77 is provided with a filter box 76 for filtering the gas.

[0027] The air pump 78 draws air through the air inlet pipe 77, the air suction plate 75 on the inner wall of the mounting plate 71 can adsorb the gas inside the sealed space of the main air bag 721, the air suction plate 75 helps to quickly and effectively remove the gas inside the sealed space, and the vacuum pumping efficiency is improved; the filter box 76 on the air inlet pipe 77 can filter impurities in the gas, prevent impurities from entering the air pump 78 and the inside of the detection box 3, and affect the detection, and improve the detection accuracy.

[0028] In some embodiments, the inside of the main air bag 721 is installed with an auxiliary air bag 722; the inside of the auxiliary air bag 722 and the inside of the shoe sample body 4 are both provided with a magnetic plate 723; one end of the auxiliary air bag 722 is in communication with the output end of the air pump 78; and the auxiliary air bag 722 and the main air bag 721 are installed with an elastic rubber ring 724.

[0029] The inside of the main air bag 721 is installed with an auxiliary air bag 722; the inside of the auxiliary air bag 722 and the inside of the shoe sample body 4 are both provided with a magnetic plate 723; the magnetic force between the magnetic plates 723 enhances the sealing effect; one end of the auxiliary air bag 722 is in communication with the output end of the air pump 78; the air pump 78 can inflate and deflate the auxiliary air bag 722; when the main air bag 721 leaks, the elastic rubber ring 724 can push the auxiliary air bag 722 to move and inflate the auxiliary air bag 722 to achieve temporary sealing; this ingenious air sealing mechanism 7 design can effectively prevent gas leakage, maintain the vacuum state of the detection area, and ensure long-term stable operation of the device.

[0030] In some embodiments, the air outlet pipe 710 is provided with a ball assembly 79; the ball assembly 79 includes a ball valve body 791 installed on the air outlet pipe 710; the inside of the ball valve body 791 is fixedly installed with a fixing frame 792; and the ball valve body 791 is installed with an elastic gasket 793 with pressure deformation characteristics near the air outlet of the air outlet pipe 710.

[0031] When the gas passes through the gas outlet pipe 710, the elastic gasket 793 close to the gas outlet is deformed under the action of the gas pressure, thereby adjusting the flow and pressure of the gas, realizing accurate control of the inflation and deflation of the main air bag 721, ensuring the sealing effect and the stability of the detection environment, improving the accuracy of the detection result, and avoiding damage to the air bag caused by excessive pressure.

[0032] In some embodiments, the top end of the base 1 is fixedly installed with a support frame 5, and the top end of the support frame 5 is provided with a positioning mechanism 6. The positioning mechanism 6 includes a moving assembly 61 arranged at the top end of the support frame 5. The moving assembly 61 includes two threaded sleeves 613 rotatably installed at the top end of the support frame 5. Screw rods 611 are threadedly installed in the threaded sleeves 613. Sliding rods 612 are fixedly installed at the bottom ends of the screw rods 611 and slide through the support frame 5. A copper top plate 623 is arranged at the free ends of the screw rods 611.

[0033] The motor 617 drives the roller 616 to rotate. The roller 616 drives the belt 614 to rotate under the action of the pressing rod 615. The two threaded sleeves 613 are driven to rotate synchronously by the belt 614. The screw rods 611 move up and down under the limitation of the sliding rods 612. The copper top plate 623 arranged at the free ends of the screw rods 611 can move into the shoe sample body 4 to accurately control the position of the copper top plate 623, facilitating positioning and operation of the inside of the shoe sample body 4 and improving the accuracy of detection.

[0034] In some embodiments, the bottom end of the screw rod 611 is provided with an expansion assembly 62. The expansion assembly 62 includes a fixed rod 621 installed at the bottom end of the screw rod 611. A plurality of telescopic rods 622 are fixedly installed on the outer surface of the fixed rod 621. The copper top plate 623 is fixedly installed at the free ends of the telescopic rods 622. A copper pressing plate 624 for pressurizing the shoe sample body 4 is fixedly installed at the bottom end of the fixed rod 621.

[0035] The copper top plate 623 is installed at the free ends of the telescopic rods 622 and can adjust the position by telescopic adjustment of the telescopic rods 622 to adapt to the inside of shoe sample bodies 4 of different sizes and shapes. The copper pressing plate 624 at the bottom end of the fixed rod 621 is used to press the bottom of the shoe sample body 4 to ensure that the shoe sample body 4 is in full contact with the conductive medium and improve the detection reliability.

[0036] In some embodiments, the top end of the support frame 5 is fixedly installed with a motor 617. The output shaft of the motor 617 is fixedly installed with a roller 616. The top end of the support frame 5 is rotatably installed with a pressing rod 615. The belt 614 is sleeved between the two threaded sleeves 613, and one end of the belt 614 slides between the pressing rod 615 and the roller 616.

[0037] When the motor 617 rotates, the two threaded sleeves 613 rotate synchronously through the transmission of the belt 614 and the auxiliary action of the pressing rod 615, the screw rod 611 moves up and down, and the expansion assembly 62 drives the shoe sample body 4 to operate, the transmission mode is simple in structure and stable in transmission, the two threaded sleeves 613 can rotate synchronously, the screw rod 611 moves more uniformly, and the accuracy of positioning and expansion operation is improved.

[0038] In some embodiments, the inside of the shoe sample body 4 is provided with an inner auxiliary mechanism 711, the inner auxiliary mechanism 711 includes an air cylinder 7113 mounted on the outer surface of a fixed rod 621, the fixed rod 621 is located in the inside of the shoe sample body 4 and provided with an annular rubber tube 7116, the inside of the annular rubber tube 7116 is provided with a magnetic plate 723 which has a mutual adsorption effect with the inside of the auxiliary air bag 722, the air cylinder 7113 is in communication with the annular rubber tube 7116, the output end of the air pump 78 is communicated and mounted with a connecting pipe 7111, the connecting pipe 7111 is communicated and mounted with the air cylinder 7113 through a hose 7112, the top end of the support frame 5 is fixedly mounted with a spring 7115, the bottom end of the spring 7115 is fixedly mounted with a top ring 7114, and the hose 7112 slidably penetrates the top ring 7114.

[0039] The output end of the air pump 78 is communicated with the air cylinder 7113 through the hose 7112, the air cylinder 7113 is in communication with the annular rubber tube 7116, the air pump 78 can inflate or deflate the annular rubber tube 7116 through the air cylinder 7113, the magnetic plate 723 in the annular rubber tube 7116 is the same as the magnetic plate 723 in the auxiliary air bag 722, and the sealing is assisted by magnetic force, the inner auxiliary mechanism 711 further enhances the sealing effect of the inside of the shoe sample body 4, and ensures the stability of the detection environment.

[0040] In some embodiments, the inside of the detection box 3 is provided with a vacuum degree sensor, a leakage current monitor and a temperature compensation device, and the detection ends of the vacuum degree sensor, the leakage current monitor and the temperature compensation device are located at the top end of the detection box 3 close to the shoe sample body 4.

[0041] The vacuum degree sensor can monitor the vacuum degree of the detection area to ensure that the vacuum effect meets the requirements; the leakage current monitor can monitor the current leakage in real time to find insulation performance problems in time; and the temperature compensation device can automatically correct the detection data according to the change of the environmental temperature, eliminate the influence of the temperature on the detection result, and automatically adjust and correct according to the actual situation.

[0042] Working principle: first detect the shoe sample body 4 placed at the top of the detection box 3, set the water-soaked sponge plate 8 as the conductive medium between the detection box 3 electric output end and the shoe sample body 4, the air pump 78 is communicated with the inside of the detection box 3 through the air inlet pipe 77, is communicated with the main air bag 721 through the air outlet pipe 710, the main air bag 721 is arranged in the middle of the mounting plate 71 for sealing the bottom end of the shoe sample body 4, the air pump 78 is used to realize the sealing and detection environment control of the bottom end of the main air bag 721 and the shoe sample body 4 by pumping or inflating, can realize the function of the insulating property detection of the safety shoes, and the inside of the main air bag 721 is provided with the auxiliary air bag 722, the inside of the auxiliary air bag 722 and the inside of the annular rubber tube 7116 are provided with the magnetic plate 723, are mutually magnetically attracted and are reinforced and sealed, and the space between the main air bag 721 and the shoe sample body 4 can be vacuumized through the air inlet pipe 77, the vacuumization is carried out by excluding air, makes the water-soaked sponge plate 8 completely adhere to the vamp, ensures that the current path is uniform, avoids the misjudgment caused by poor contact.

[0043] The above is only a specific embodiment of the present application, but the technical features of the present application are not limited to this. Any simple change, equivalent replacement or modification made on the basis of the present application to solve the basically same technical problem and realize the basically same technical effect is covered in the protection scope of the present application.

Claims

1. A safety shoe insulation detection device, comprising a base (1), characterized in that: The top of the base (1) is fixedly provided with a detection box (3), the top of the detection box (3) is provided with a shoe sample body (4), and the electrical output end of the detection box (3) and the shoe sample body (4) are provided with a water-soaked sponge plate (8), the top of the base (1) is provided with a positioning mechanism (6), the output end of the positioning mechanism (6) is provided with an expansion assembly (62), the expansion assembly (62) comprises a plurality of copper top plates (623) arranged in the shoe sample body (4), the top of the detection box (3) is provided with a gas sealing mechanism (7), the gas sealing mechanism (7) comprises a gas pump (78) mounted at the top of the base (1), the top of the detection box (3) is fixedly provided with a mounting plate (71), the surface of the mounting plate (71) is provided with a sealing assembly (72), the sealing assembly (72) comprises a main air bag (721) arranged in the middle of the mounting plate (71) and used for sealing the bottom end of the shoe sample body (4), the top of the base (1) is fixedly provided with a gas pump (78), the input end of the gas pump (78) is communicated with the inside of the detection box (3) through a gas inlet pipe (77), and the output end of the gas pump (78) is communicated with the main air bag (721) through a gas outlet pipe (710).

2. The safety shoe insulation detection device according to claim 1, characterized in that: The top of the base (1) is fixedly provided with a protection plate (2), and the top of the detection box (3) is fixedly provided with a baffle (74) for supporting the main air bag (721), and a plurality of limiting plates (73) for limiting the main air bag (721) are fixedly arranged on the inner wall of the baffle (74).

3. The device for detecting the insulation of safety shoes according to claim 1, characterized in that: The inner wall of the mounting plate (71) is fixedly provided with an air suction plate (75) for adsorbing the inside of the space sealed by the main air bag (721), the air inlet pipe (77) is communicated with the air suction plate (75), and a filter box (76) for filtering gas is arranged on the air inlet pipe (77).

4. The safety shoe insulation detection device according to claim 1, characterized in that: The inside of the main air bag (721) is provided with an auxiliary air bag (722), the inside of the auxiliary air bag (722) and the inside of the shoe sample body (4) are provided with magnetic plates (723), one end of the auxiliary air bag (722) is communicated with the output end of the gas pump (78), and an elastic rubber ring (724) is arranged between the auxiliary air bag (722) and the main air bag (721).

5. The safety shoe insulation detection device according to claim 1, wherein: The gas outlet pipe (710) is provided with a ball assembly (79), the ball assembly (79) comprises a ball valve body (791) mounted on the gas outlet pipe (710), a fixed frame (792) is fixedly arranged in the ball valve body (791), and an elastic gasket (793) with pressure deformation characteristics is arranged on the ball valve body (791) close to the gas outlet of the gas outlet pipe (710).

6. The safety shoe insulation detection device according to claim 1, wherein: The top end of the base (1) is fixedly provided with a support frame (5), the top end of the support frame (5) is provided with a positioning mechanism (6), the positioning mechanism (6) comprises a moving assembly (61) provided at the top end of the support frame (5), the moving assembly (61) comprises two threaded sleeves (613) rotatably installed at the top end of the support frame (5), the threaded sleeves (613) are internally and threadedly provided with screw rods (611), the bottom end of the screw rod (611) is fixedly provided with a sliding rod (612), the sliding rod (612) slidably penetrates the support frame (5), and a copper top plate (623) is arranged at the free end of the screw rod (611).

7. The safety shoe insulation detection device according to claim 6, characterized in that: The bottom end of the screw rod (611) is provided with an expansion assembly (62), the expansion assembly (62) comprises a fixed rod (621) installed at the bottom end of the screw rod (611), a plurality of telescopic rods (622) are fixedly installed on the outer surface of the fixed rod (621), the copper top plate (623) is fixedly installed at the free end of the telescopic rod (622), and the bottom end of the fixed rod (621) is fixedly provided with a copper pressing plate (624) for pressing the shoe sample body (4).

8. The safety shoe insulation detection device of claim 6, wherein: The top end of the support frame (5) is fixedly provided with a motor (617), the output shaft of the motor (617) is fixedly provided with a roller (616), the top end of the support frame (5) is rotatably provided with a pressing rod (615), the two threaded sleeves (613) are sleeved with a belt (614), and one end of the belt (614) slidably penetrates between the pressing rod (615) and the roller (616).

9. The safety shoe insulation detection device of claim 6, wherein: The inside of the shoe sample body (4) is provided with an inner auxiliary mechanism (711), the inner auxiliary mechanism (711) comprises an air cylinder (7113) installed on the outer surface of the fixed rod (621), the fixed rod (621) located in the inside of the shoe sample body (4) is provided with an annular rubber tube (7116), the inside of the annular rubber tube (7116) is provided with a magnetic plate (723) capable of being mutually adsorbed with the inside of the auxiliary air bag (722), the air cylinder (7113) is in communication with the annular rubber tube (7116), the output end of the air pump (78) is in communication and installation of a connecting pipe (7111), the connecting pipe (7111) is in communication and installation with the air cylinder (7113) through a hose (7112), the top end of the support frame (5) is fixedly provided with a spring (7115), the bottom end of the spring (7115) is fixedly provided with a top ring (7114), and the hose (7112) slidably penetrates the top ring (7114).

10. The safety shoe insulation detection device of claim 1, wherein: The inside of the detection box (3) is provided with a vacuum degree sensor, a leakage current monitor and a temperature compensation device, and the detection ends of the vacuum degree sensor, the leakage current monitor and the temperature compensation device are located at the top end of the detection box (3) close to the shoe sample body (4).

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