Insulation resistance tester based on safety early warning performance

Abstract

The invention provides an insulation resistance tester based on safety early warning performance, and relates to the technical field of insulation resistance testing. The insulation resistance tester comprises a protection box assembly, an insulation resistance tester body, an early warning protection assembly, an electromagnet group and a test connection assembly, the protection box assembly comprises a placement box, the placement box is connected with a middle box cover through a hinge, and the middle box cover is connected with a top box cover through a hinge; the insulation resistance tester body is arranged in the placing box, the insulation resistance tester body is provided with a plugging port, an early warning button group, an early warning lamp and a loudspeaker, and the middle part of the insulation resistance tester body is connected with an independent display screen through a folding support. Through the arrangement of the early warning protection assembly and the electromagnet group, a safety early warning protection function can be provided for the plugging port, a good early warning effect is achieved, misoperation of an operator is avoided, and the safety of the operator is improved.

Description

Technical Field

[0001] The invention relates to the technical field of insulation resistance testing, in particular to an insulation resistance tester based on safety early warning performance. Background Art

[0002] Insulation resistance meter is an instrument used to measure the insulation resistance of electrical equipment. It is mainly used for insulation maintenance, testing and inspection of electrical equipment to ensure the safety and reliability of the equipment.

[0003] For example: HZST76 insulation resistance tester adopts advanced single-chip microcomputer control process and has a full Chinese operation interface, making it easy to carry and simple to operate. It has a built-in rechargeable battery and charger. After fully charged, it can be used continuously for 6 to 12 hours to meet the needs of long-term field operations. According to Ohm's law (R=U / I), the tester substitutes the measured voltage and current values ​​into the formula to calculate the insulation resistance value of the device or line under test.

[0004] The HZST76 insulation resistance tester has "earth terminal (EARTH)", "line terminal (LI NE)" and "shield terminal (GUARD)", which correspond to the shell or grounding of the equipment under test, the high-voltage conductor and the part that needs to eliminate the interference of surface leakage current. During the test, the plug-in end of the resistance detection pen needs to be inserted into the corresponding end hole. If the wrong type of end hole is inserted, the test cannot be carried out at the least, and the operator may be electrocuted in severe cases, causing personal injury or even death. Therefore, it is dangerous.

[0005] However, in the existing technology, multiple end holes of the insulation resistance tester are directly exposed, which cannot provide a safety warning function for the operator and is not safe to use. Summary of the invention

[0006] 1. Technical issues to be resolved

[0007] In view of the deficiencies in the prior art, the present invention provides an insulation resistance tester based on safety warning performance, which solves the problem that multiple end holes of the insulation resistance tester are directly in an exposed state, cannot serve as a safety warning function for operators, and are not safe to use.

[0008] (II) Technical solution

[0009] To achieve the above objectives, the present invention is implemented through the following technical solutions: an insulation resistance tester based on safety early warning performance, comprising:

[0010] A protection box assembly, the protection box assembly comprising a placement box, the placement box is connected to a middle box cover via a hinge, and the middle box cover is connected to a top box cover via a hinge;

[0011] The insulation resistance tester body is arranged in the placement box, the insulation resistance tester body is provided with a plug port, a warning button group, a warning light, and a speaker, and the middle part of the insulation resistance tester body is connected with an independent display screen through a folding bracket;

[0012] An early warning protection component, the early warning protection component is arranged at a position corresponding to the plug port, the early warning protection component is arranged at a position corresponding to the plug port, and the early warning protection component includes a covering member for covering the plug port and a detection member for detecting the position of the covering member;

[0013] The test connection assembly is used for test connection, and the test connection assembly includes a multifunctional assembly with an insertion connection function and a clamping connection function. The early warning protection assembly and the electromagnet group are provided to provide a safety early warning protection function for the plug port. Compared with the directly exposed plug port, it has a good early warning effect, avoids operator misoperation, and improves the safety of the operator.

[0014] Preferably, the side wall of the placement box is rotatably connected with a maintenance door, the placement box and the middle box cover, the top box cover and the middle box cover, and the maintenance door and the placement box are all locked by locks, the middle box cover is fixedly connected with a protective cotton block relative to the independent display screen, the middle box cover is fixedly connected with a partition plate on one side close to the top box cover, the top box cover is fixedly connected with a buffer elastic pad on one side opposite to the middle box cover, the lower surface of the placement box is fixedly connected with an anti-slip pad, and the placement box is also provided with a handle.

[0015] Preferably, the folding bracket includes a folding base, a folding bottom rod, a folding top rod and a connecting rod which are rotatably connected to each other from bottom to top in sequence, the folding base is fixedly connected to the insulation resistance tester body, the connecting rod is fixedly connected to the independent display screen, a protruding column is fixedly connected to the folding top rod, the upper part of the folding bottom rod is connected to a pressing claw through a spring sheet, the pressing claw is rotatably connected to the folding bottom rod, a folding notch adapted to the motion trajectory of the protruding column is provided on the folding bottom rod, and a receiving cavity for accommodating the folding top rod is reserved between the two folding bottom rods. When in use, the folding top rod is in an open state, the protruding column is pressed by the pressing claw, and the folding bracket as a whole provides good support for the independent display screen. The pressing claw can provide a certain amount of pressure under the elastic force of the spring sheet. When in the retracted state, the folding top rod is located in the receiving cavity between the folding bottom rods, and the protruding column is located at the folding notch on the folding bottom rod. At this time, the independent display screen is in a retracted state and can be conveniently carried and used.

[0016] Preferably, the covering member includes a rotating seat fixedly mounted on the insulation resistance tester body, a protective cover is rotatably connected to the rotating seat, a reset torsion spring for resetting the protective cover is provided between the rotating seat and the protective cover, a permanent magnet and a protective notch are provided on the protective cover, and a limit plate is fixedly connected to the rotating seat; the detection member is a contact switch, which is mounted on the limit plate, the covering member also includes an electromagnet group, the electromagnet group includes three electromagnets, the electromagnet group is installed in the insulation resistance tester body, the electromagnetic end of the electromagnet group corresponds to the permanent magnet, and the electromagnetic end of the electromagnet group has opposite magnetic properties to the permanent magnet.

[0017] Preferably, the test connection assembly also includes an insertion column, a wire, and a hand-held rod, the wire electrically connects the insertion column and the hand-held rod together, the multifunctional assembly is installed on the hand-held rod, the multifunctional assembly includes a conductive plug and a retaining ring fixedly installed on the end of the hand-held rod, the retaining ring is connected to an insulating rod through a rotating shaft, the end of the insulating rod close to the conductive plug is movably connected to a conductive clamp, the conductive clamp is rotatably connected to the hand-held rod, a clamping torsion spring for providing a clamping force is provided between the conductive clamp and the hand-held rod, the end of the insulating rod away from the conductive clamp is fixedly connected to a pressing plate, the pressing plate is provided with a limiting member, the limiting member includes a control cylinder and a limiting slot seat fixed as a whole, the control cylinder is movably installed on the hand-held rod, the hand-held rod and the upper and lower sides of the control cylinder are fixedly connected to limiting rings, and the conductive clamp is provided with a protruding arc portion and an extended claw portion.

[0018] Preferably, the insulation resistance tester body is also provided with a USB charging port, a power switch, a power indicator light, a single-chip microcomputer, and a function key area. The function key area is located on the right side of the independent display screen, the power switch and the power indicator light are both located on the front side of the function key area, the USB charging port is located on the front side of the plug port, and the single-chip microcomputer is electrically connected to the contact switch, the warning button group, the speaker, the warning light and the electromagnet group.

[0019] Preferably, a partition plate is fixedly connected inside the middle box cover, and a main accommodating area and a secondary accommodating area are provided on both sides of the partition plate, and a accommodating seat for placing the test connection assembly is fixedly connected inside the secondary accommodating area. The partitioned placement is convenient for taking and using, and is not easy to be mixed together and damage the test connection assembly.

[0020] Preferably, one end of the independent display screen away from the folding bracket is rotatably connected to the insulation resistance tester body, and an operating handle for operation is fixedly connected to the independent display screen.

[0021] Preferably, the covering member is a protective cover that is engaged with the plug-in port, the detecting member is a contact switch, the contact switch is installed on the outside of the plug-in port, the protective cover is in contact with the contact switch in a closed state, the covering member also includes an electromagnet group, the electromagnet group includes three electromagnets, the electromagnet group is installed in the insulation resistance tester body, and the electromagnet group can adsorb the protective cover when energized.

[0022] (III) Beneficial effects

[0023] The present invention provides an insulation resistance tester based on safety early warning performance. It has the following beneficial effects:

[0024] 1. The present invention can provide a safety warning protection function for the plug-in port by setting up a warning protection component and an electromagnet group. Compared with a directly exposed plug-in port, it has a good warning effect, avoids operator misoperation, and improves the safety of the operator.

[0025] 2. The present invention provides a folding bracket and an independent display screen, so that the independent display screen can be lifted up, thereby facilitating observation of relevant data on the independent display screen. Compared with the original fixed display screen, it is convenient to observe the readings and is convenient for testing.

[0026] 3. The present invention can provide two connection modes, plug-in type and clamping type, by providing a test connection assembly. Compared with the original single plug-in type, it increases the range of insulation resistance testable types and facilitates the use of insulation resistance testing.

[0027] 4. The maintenance door provided in the present invention can facilitate maintenance and use, especially the maintenance of the battery, further increasing the safety of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is an overall stereogram of the present invention;

[0029] Figure 2 A bottom perspective view of the present invention;

[0030] Figure 3 A three-dimensional diagram of the early warning protection component of the present invention;

[0031] Figure 4 A three-dimensional diagram of a rotating seat portion of the present invention;

[0032] Figure 5 It is an overall top view of the present invention;

[0033] Figure 6 is a three-dimensional diagram of the folding bracket of the present invention;

[0034] Figure 7 For the present invention Figure 6The enlarged view of point A in the middle;

[0035] Figure 8 is a three-dimensional diagram of a test connection assembly of the present invention;

[0036] Fig. 9 is a perspective view of the multifunctional assembly of the present invention;

[0037] Fig.10 A signal connection diagram of the safety warning function of the present invention;

[0038] Fig.11 It is a three-dimensional diagram of the multifunctional component of the present invention.

[0039] Among them, 1. Protection box assembly; 2. Early warning protection assembly; 3. Electromagnet group; 4. Test connection assembly; 5. Insulation resistance tester body; 7. Multi-function assembly; 101. Placement box; 102. Protective cotton block; 103. Middle box cover; 1031. Partition plate; 104. Top box cover; 105. Buffer elastic pad; 106. Maintenance door; 107. Anti-slip pad; 201. Rotating seat; 202. Reset torsion spring; 203. Protective cover; 204. Permanent magnet; 205. Protective notch; 206. Contact switch; 207. Limit plate; 401. Insert column; 402. Wire; 403. Hand-held rod; 501. Function key area; 502. Independent display screen; 503. Folding bracket; 504. U SB charging port; 505, plug port; 506, warning light; 507, speaker; 508, warning button group; 509, power switch; 510, power indicator light; 5031, folding base; 5032, folding bottom rod; 5033, folding top rod; 5034, connecting rod; 601, folding notch; 602, protruding column; 603, spring; 604, pressing claw; 701, conductive plug; 702, conductive clamping claw; 703, clamping torsion spring; 704, insulating rod; 705, rotating shaft; 706, retaining ring; 707, pressing plate; 708, limiting member; 709, limiting ring; 7081, control tube; 7082, limiting slot seat; 7021, protruding arc portion; 7022, extending claw portion. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] Embodiment 1:

[0042] like Figure 1-Figure 11As shown, an embodiment of the present invention provides an insulation resistance tester based on safety warning performance, including:

[0043] The protection box assembly 1 includes a placement box 101, the placement box 101 is connected to an intermediate box cover 103 through a hinge, a partition plate 1031 is fixedly connected in the intermediate box cover 103, a main accommodating area and a secondary accommodating area are arranged on both sides of the partition plate 1031, a accommodating seat for placing the test connection assembly 4 is fixedly connected in the secondary accommodating area, the intermediate box cover 103 is connected to a top box cover 104 through a hinge, a maintenance door 106 is rotatably connected to the side wall of the placement box 101, and the placement box 101 and the intermediate box cover 103 are connected to the maintenance door 106. , the top box cover 104 and the middle box cover 103, the maintenance door 106 and the storage box 101 are all locked by a lock, the middle box cover 103 is fixedly connected with a protective cotton block 102 at a position relative to the independent display screen 502, the middle box cover 103 is fixedly connected with a partition plate 1031 on one side close to the top box cover 104, the top box cover 104 is fixedly connected with a buffer elastic pad 105 on one side relative to the middle box cover 103, the lower surface of the storage box 101 is fixedly connected with an anti-slip pad 107, and the storage box 101 is also provided with a handle;

[0044] refer to Figure 1 , Figure 2 The placement box 101 and the middle box cover 103 can provide good protection for the insulation resistance tester body 5 and are convenient to carry for testing. The protective cotton block 102 is used to provide protection and protection functions for the independent display screen 502. The buffer elastic pad 105 is used to provide protection and limit the test connection component 4 to prevent the test connection component 4 from shaking and falling. The main storage area can be used to place related tools used for testing, such as insulating gloves.

[0045] The insulation resistance tester body 5 is arranged in the placement box 101. The insulation resistance tester body 5 is provided with a plug port 505, a warning button group 508, a warning light 506, and a speaker 507. The middle part of the insulation resistance tester body 5 is connected to an independent display screen 502 through a folding bracket 503. The end of the independent display screen 502 away from the folding bracket 503 is rotatably connected to the insulation resistance tester body 5. An operating handle for operation is fixedly connected to the independent display screen 502;

[0046] refer to Figure 1 , Figure 5 , Fig.10, the plug port 505 is used for test connection, the warning button group 508 includes three warning buttons, and the corresponding electromagnet can be turned on by pressing the corresponding warning button to realize the function of opening the protective cover 203, the warning light 506 is used to generate a warning light source when warning, and the light source color can be selected to be red, which has a good warning effect, and the speaker 507 is used to generate warning-related voices, such as: normal opening of the protective cover 203, abnormal opening of the protective cover 203, danger! Danger! The operating handle is used to control the state of the independent display screen 502.

[0047] The folding bracket 503 includes a folding base 5031, a folding bottom rod 5032, a folding top rod 5033 and a connecting rod 5034 which are rotatably connected to each other from bottom to top. The folding base 5031 is fixedly connected to the insulation resistance tester body 5, the connecting rod 5034 is fixedly connected to the independent display screen 502, the folding top rod 5033 is fixedly connected to the protruding column 602, the upper part of the folding bottom rod 5032 is connected to the pressing claw 604 through the spring piece 603, the pressing claw 604 is rotatably connected to the folding bottom rod 5032, the folding bottom rod 5032 is provided with a folding notch 601 adapted to the motion trajectory of the protruding column 602, and a receiving cavity for receiving the folding top rod 5033 is reserved between the two folding bottom rods 5032;

[0048] refer to Figure 6 , Figure 7 When in use, the folding top rod 5033 is in the open state, the protruding column 602 is pressed by the pressing claw 604, and the folding bracket 503 as a whole provides good support for the independent display screen 502. The pressing claw 604 can provide a certain pressure under the elastic force of the spring piece 603. When in the folded state, the folding top rod 5033 is located in the accommodating cavity between the folding bottom rods 5032, and the protruding column 602 is located at the folding notch 601 on the folding bottom rod 5032. At this time, the independent display screen 502 is in the folded state and can be conveniently carried and used.

[0049] The insulation resistance tester body 5 is also provided with a USB charging port 504, a power switch 509, a power indicator light 510, a single-chip microcomputer, and a function key area 501. The function key area 501 is located on the right side of the independent display screen 502. The power switch 509 and the power indicator light 510 are both located on the front side of the function key area 501. The USB charging port 504 is located on the front side of the plug port 505. The single-chip microcomputer is electrically connected to the contact switch 206, the warning button group 508, the speaker 507, the warning light 506 and the electromagnet group 3.

[0050] refer to Figure 5The USB charging port 504 is used for charging, the power switch 509 is used to turn the power on and off, the power indicator light 510 is used to indicate the power status, the function key area 501 is used to operate related functions, such as measuring voltage value selection, the warning button group 508 includes three warning buttons for warning operation, and the contact switch 206 is used to detect whether the protective cover 203 is in an open state. If the protective cover 203 is opened abnormally, the warning function procedure is performed.

[0051] The early warning protection component 2 is arranged at the corresponding position of the plug port 505. The early warning protection component 2 includes a cover for covering the plug port 505 and a detection member for detecting the position of the cover. The cover includes a rotating seat 201 fixedly mounted on the insulation resistance tester body 5. A protective cover 203 is rotatably connected to the rotating seat 201. A reset torsion spring 202 for resetting the protective cover 203 is arranged between the rotating seat 201 and the protective cover 203. A permanent magnet 204 and a protective notch 205 are arranged on the protective cover 203. The rotating seat 201 is fixedly connected to a limit plate 207; the detection member is a contact switch 206, and the contact switch 206 is installed on the limit plate 207. The cover member also includes an electromagnet group 3, and the electromagnet group 3 includes three electromagnets. The electromagnet group 3 is installed in the insulation resistance tester body 5. The electromagnetic end of the electromagnet group 3 corresponds to the permanent magnet 204, and the electromagnetic end of the electromagnet group 3 is opposite to the permanent magnet 204. In other embodiments, an indicator icon may be provided on the surface of the protective cover 203 to increase recognition;

[0052] refer to Figure 1 , Figure 5 , Fig.10 When the electromagnet is energized, it generates magnetism and can be adsorbed together with the permanent magnet 204. On the contrary, when the power is cut off and the magnetism is lost, the permanent magnet 204 cannot be adsorbed. Therefore, it can be reset by the reset torsion spring 202 to realize the function of automatically opening the protective cover 203.

[0053] The test connection assembly 4 is used for test connection. The test connection assembly 4 includes a multifunctional assembly 7 with an insertion connection function and a clamping connection function. The test connection assembly 4 also includes an insertion column 401, a wire 402, and a hand-held rod 403. The wire 402 electrically connects the insertion column 401 and the hand-held rod 403. The multifunctional assembly 7 is installed on the hand-held rod 403. The multifunctional assembly 7 includes a conductive plug 701 fixedly installed at the end of the hand-held rod 403 and a retaining ring 706. The retaining ring 706 is connected to an insulating rod 704 through a rotating shaft 705. The end of the insulating rod 704 close to the conductive plug 701 is movably connected to a conductive clamp Claw 702, the conductive clamping claw 702 is rotatably connected to the hand-held rod 403, a clamping torsion spring 703 for providing clamping force is provided between the conductive clamping claw 702 and the hand-held rod 403, a pressing plate 707 is fixedly connected to the end of the insulating rod 704 away from the conductive clamping claw 702, a limiting member 708 is provided at the pressing plate 707, the limiting member 708 includes a control cylinder 7081 and a limiting groove seat 7082 fixed as a whole, the control cylinder 7081 is movably installed on the hand-held rod 403, and limiting rings 709 are fixedly connected to the upper and lower sides of the control cylinder 7081 on the hand-held rod 403, and a protruding arc portion 7021 and an extended claw portion 7022 are provided on the conductive clamping claw 702.

[0054] refer to Figure 8 , Fig. 9 The insertion column 401 is used to be inserted into the plug port 505. The conductive plug 701 can be inserted into the object to be tested, or the pressing piece 707 can be pressed. The pressing piece 707 drives the insulating rod 704 and the conductive clamping claw 702 to open, and the object to be tested is clamped between the conductive clamping claw 702 and the conductive plug 701. There are multiple connection methods, which is convenient for connection and use, and has a wide range of applications. The protruding arc portion 7021 can increase the clamping area and improve the clamping firmness. The extended claw portion 7022 can increase the length that can be clamped and improve the clamping range.

[0055] refer to Fig.11 When using the conductive plug 701 to insert the target part to be measured, if the socket is large, first rotate the control cylinder 7081 to move the pressing piece 707 out of the limiting groove of the limiting groove seat 7082, and then press the pressing piece 707, the pressing piece 707 drives the insulating rod 704 and the conductive clamping claw 702 to open, and then rotate the control cylinder 7081 again to make the pressing piece 707 again inserted into the limiting groove of the limiting groove seat 7082 to complete the fixation, so that the protruding arc portion 7021 and the extended claw portion 7022 are opened, the extended claw portion 7022 and the conductive plug 701 cooperate with each other, and can be inserted into a larger socket, so that it can be suitable for socket environments of different sizes and has a wide range of applications.

[0056] Working principle: Open the lock and take out the test connection component 4. When using it, select the required plug port 505 target according to the test needs, such as Figure 1 As shown, it is necessary to connect the plug ports 505 on the left and right sides, press the corresponding warning button, the single chip microcomputer controls the corresponding electromagnet to cut off the power, the protective cover 203 is driven to open by the reset torsion spring 202, the protective cover 203 contacts the contact switch 206, and the contact signal of the contact switch 206 is transmitted to the single chip microcomputer. The single chip microcomputer determines that the contact signal of the contact switch 206 is correct. Therefore, at this time, the plug-in position is correct. If the middle protective cover 203 is opened, the middle contact switch 206 will transmit a signal. At this time, the single chip microcomputer determines that the protective cover 203 is not opened correctly and there is an incorrect plug-in situation. At this time, the warning light 506 and the speaker 507 work, and a red The light and warning voice are emitted to play the role of safety warning. The insertion column 401 is used to be inserted into the plug port 505. The conductive plug 701 can be inserted into the object to be tested, or the pressure piece 707 can be pressed. The pressure piece 707 drives the insulating rod 704 and the conductive clamping claw 702 to open, and the object to be tested is clamped between the conductive clamping claw 702 and the conductive plug 701. There are many connection methods, which are convenient for connection and use, and have a wide range of applications. Then the folding top rod 5033 is opened to the open state, the protruding column 602 is pressed by the pressure claw 604, and the folding bracket 503 as a whole provides good support for the independent display screen 502, and then the insulation resistance test operation can be carried out.

[0057] Embodiment 2:

[0058] The difference from the first embodiment is that: the cover is a protective cover 203 engaged with the plug port 505, the detection member is a contact switch 206, the contact switch 206 is installed outside the plug port 505, the protective cover 203 contacts the contact switch 206 in the closed state, the cover also includes an electromagnet group 3, the electromagnet group 3 includes three electromagnets, the electromagnet group 3 is installed in the insulation resistance tester body 5, and the electromagnet group 3 can absorb the protective cover 203 when it is energized (not shown in the figure);

[0059] When the protective cover 203 is in the engaged state, it provides good protection for the plug-in port 505. When in use, the corresponding protective cover 203 can be taken out to facilitate measurement and connection. The electromagnet is energized to generate magnetic force, which can adsorb the protective cover 203 to prevent the protective cover 203 from falling off. When the electromagnet is powered off, the magnetic force disappears and the protective cover 203 can be taken out. Among them, when the contact switch 206 is in the triggered state, the protective cover 203 is in the unused state. When the contact switch 206 is not triggered, the protective cover 203 is in the used state. In conjunction with the single-chip microcomputer, the safety warning function can be completed. This embodiment has the advantages of simple structure, simple manufacturing and low manufacturing cost.

[0060] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An insulation resistance tester based on safety warning performance, characterized in that: include: A protection box assembly (1), the protection box assembly (1) comprising a storage box (101), the storage box (101) being connected to a middle box cover (103) via a hinge, and the middle box cover (103) being connected to a top box cover (104) via a hinge; An insulation resistance tester body (5), the insulation resistance tester body (5) being arranged in a storage box (101), the insulation resistance tester body (5) being provided with a plug-in port (505), a warning button group (508), a warning light (506), and a speaker (507), and the middle part of the insulation resistance tester body (5) being connected to an independent display screen (502) via a folding bracket (503); An early warning protection component (2), the early warning protection component (2) being arranged at a position corresponding to the plug port (505), the early warning protection component (2) comprising a covering member for covering the plug port (505) and a detection member for detecting a position of the covering member; A test connection component (4) is used for test connection, and comprises a multifunctional component (7) having an insertion connection function and a clamping connection function.

2. The insulation resistance tester based on safety warning performance according to claim 1 is characterized in that: The side wall of the storage box (101) is rotatably connected with a maintenance door (106); the storage box (101) and the middle box cover (103), the top box cover (104) and the middle box cover (103), and the maintenance door (106) and the storage box (101) are all locked by means of a lock; the middle box cover (103) is fixedly connected with a protective cotton block (102) at a position opposite to the independent display screen (502); a partition plate (1031) is fixedly connected to a side of the middle box cover (103) close to the top box cover (104); a buffer elastic pad (105) is fixedly connected to a side of the top box cover (104) opposite to the middle box cover (103); a non-slip pad (107) is fixedly connected to the lower surface of the storage box (101); and a handle is also provided on the storage box (101).

3. The insulation resistance tester based on safety warning performance according to claim 1 is characterized in that: The folding bracket (503) comprises a folding base (5031), a folding bottom rod (5032), a folding top rod (5033) and a connecting rod (5034) which are rotatably connected to each other in sequence from bottom to top. The folding base (5031) is fixedly connected to the insulation resistance tester body (5), the connecting rod (5034) is fixedly connected to the independent display screen (502), a protruding column (602) is fixedly connected to the folding top rod (5033), the upper part of the folding bottom rod (5032) is connected to a pressing claw (604) through a spring sheet (603), the pressing claw (604) is rotatably connected to the folding bottom rod (5032), a folding notch (601) adapted to the movement trajectory of the protruding column (602) is provided on the folding bottom rod (5032), and a receiving cavity for receiving the folding top rod (5033) is reserved between the two folding bottom rods (5032).

4. The insulation resistance tester based on safety warning performance according to claim 1 is characterized in that: The cover member comprises a rotating seat (201) fixedly mounted on the insulation resistance tester body (5); a protective cover (203) is rotatably connected to the rotating seat (201); a reset torsion spring (202) for resetting the protective cover (203) is provided between the rotating seat (201) and the protective cover (203); a permanent magnet (204) and a protective notch (205) are provided on the protective cover (203); a limiting plate (203) is fixedly connected to the rotating seat (201); 07); the detection member is a contact switch (206), the contact switch (206) is installed on the limit plate (207), the cover member also includes an electromagnet group (3), the electromagnet group (3) includes three electromagnets, the electromagnet group (3) is installed in the insulation resistance tester body (5), the electromagnetic end of the electromagnet group (3) corresponds to the permanent magnet (204), and the electromagnetic end of the electromagnet group (3) and the permanent magnet (204) have opposite magnetic properties.

5. The insulation resistance tester based on safety warning performance according to claim 1, characterized in that: The test connection assembly (4) further comprises an insertion column (401), a wire (402), and a hand-held rod (403); the wire (402) electrically connects the insertion column (401) and the hand-held rod (403); the multifunctional assembly (7) is mounted on the hand-held rod (403); the multifunctional assembly (7) comprises a conductive plug (701) fixedly mounted on the end of the hand-held rod (403) and a retaining ring (706); an insulating rod (704) is connected to the retaining ring (706) via a rotating shaft (705); a conductive clamp (702) is movably connected to one end of the insulating rod (704) close to the conductive plug (701); the conductive clamp (702) is rotatably connected to the hand-held rod (403); A clamping torsion spring (703) for providing a clamping force is provided between the conductive clamping jaw (702) and the hand-held rod (403); a pressing plate (707) is fixedly connected to one end of the insulating rod (704) away from the conductive clamping jaw (702); a limiting member (708) is provided at the pressing plate (707); the limiting member (708) comprises a control cylinder (7081) and a limiting groove seat (7082) fixed as one body; the control cylinder (7081) is movably mounted on the hand-held rod (403); limiting rings (709) are fixedly connected to the upper and lower sides of the control cylinder (7081) on the hand-held rod (403); and a protruding arc portion (7021) and an extended claw portion (7022) are provided on the conductive clamping jaw (702).

6. The insulation resistance tester based on safety warning performance according to claim 1, characterized in that: The insulation resistance tester body (5) is also provided with a USB charging port (504), a power switch (509), a power indicator light (510), a single chip microcomputer, and a function key area (501); the function key area (501) is located on the right side of the independent display screen (502); the power switch (509) and the power indicator light (510) are both located in front of the function key area (501); the USB charging port (504) is located in front of the plug port (505); and the single chip microcomputer is electrically connected to the contact switch (206), the warning button group (508), the speaker (507), the warning light (506), and the electromagnet group (3).

7. The insulation resistance tester based on safety warning performance according to claim 1, characterized in that: A partition plate (1031) is fixedly connected inside the middle box cover (103), a main accommodating area and a secondary accommodating area are provided on both sides of the partition plate (1031), and a accommodating seat for placing a test connection assembly (4) is fixedly connected inside the secondary accommodating area.

8. The insulation resistance tester based on safety warning performance according to claim 1, characterized in that: One end of the independent display screen (502) away from the folding bracket (503) is rotatably connected to the insulation resistance tester body (5), and an operating handle for operation is fixedly connected to the independent display screen (502).

9. The insulation resistance tester based on safety warning performance according to claim 1, characterized in that: The covering member is a protective cover (203) engaged with the plug port (505); the detection member is a contact switch (206); the contact switch (206) is installed outside the plug port (505); the protective cover (203) contacts the contact switch (206) in a closed state; the covering member further comprises an electromagnet group (3); the electromagnet group (3) comprises three electromagnets; the electromagnet group (3) is installed in the insulation resistance tester body (5); the electromagnet group (3) can adsorb the protective cover (203) when energized.

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