Ammeter detection device

Abstract

The invention relates to the technical field of ammeter detection, in particular to an ammeter detection device which comprises a multimeter, a display screen is fixedly mounted on the outer wall of the multimeter, a mounting box is fixedly connected to the end, away from the display screen, of the multimeter, two outer pipes abut against the upper end of the mounting box, and an inner pipe is fixedly connected to the bottom end of the inner wall of each outer pipe. The upper end of the inner pipe is fixedly connected with an air box, a disconnecting mechanism is further fixedly connected between the contact pin and the installation box, when the contact pin and the electric meter contact are short-circuited and generate high temperature, the disconnecting mechanism can disconnect the contact pin and the electric meter contact, and a recycling mechanism capable of recycling the inner pipe is fixedly installed between the air box and the inner wall of the installation box. Power-off mechanisms are fixedly mounted at the left end and the right end of the inner wall of the mounting box, and each power-off mechanism can be used for powering off the corresponding contact pin, so that more serious short circuit caused by continuous power-on is avoided, equipment damage is reduced, and electric shock of workers can be prevented.

Description

Technical Field

[0001] The present invention relates to the technical field of electric meter detection, in particular to an electric meter detection device. Background Art

[0002] In the power sector, electric meters are key devices for accurately measuring electricity and monitoring power parameters. The reliability of their performance directly affects the stable operation of the power system and the fairness of power transactions. Therefore, regular and accurate testing of electric meters is essential to ensure the quality of power supply. Traditionally, technicians mainly use multimeters to perform meter testing operations. By connecting the multimeter's probes to the meter's contacts, they can obtain various electrical parameters of the meter and determine whether the meter is functioning properly.

[0003] However, in the actual testing process, many problems have brought severe challenges to the testing work. On the one hand, due to the complex internal circuit structure of the meter, and the potential for aging, short circuits and other faults after long-term operation, when the multimeter probe is connected to the faulty meter contact, it is very easy to cause a short circuit. The short circuit will instantly generate strong sparks and extremely high temperatures. This may not only cause irreversible damage to the multimeter, significantly shorten its service life, and increase testing costs, but more seriously, high-temperature sparks may also cause safety accidents such as fires, posing a huge threat to the personal safety of operators.

[0004] On the other hand, existing meter detection equipment and methods generally lack effective automatic protection and emergency response mechanisms when facing emergencies such as short circuits. Once a short circuit occurs, the only way is to quickly and manually cut off the connection. This has a significant lag in actual operation, making it difficult to prevent further damage in the first place. In addition, manual operation is easily affected by human factors such as the operator's reaction speed and operating proficiency, and cannot ensure that short circuit accidents can be handled promptly and accurately every time.

[0005] In summary, there is an urgent need to develop an ammeter detection device and a detection method that can automatically disconnect the multimeter stylus from the meter contacts when a short circuit spark occurs between the multimeter stylus and the meter contacts and generate high temperature, and can also quickly disconnect the connection between the multimeter and the stylus, in order to improve the safety, reliability and efficiency of ammeter detection.

[0006] After searching, it was found that the prior art publication number is CN114088722A, which discloses an electric meter detection device, which includes: a transmission mechanism, a first acquisition mechanism, a second acquisition mechanism and a flipping mechanism. The electric meter is placed on the transmission mechanism and passes through the first acquisition mechanism and the second acquisition mechanism in turn to collect a three-dimensional image of the electric meter; the first acquisition mechanism and the second acquisition mechanism are respectively provided at both ends of the transmission mechanism; the electric meter detection mechanism also includes a transmission terminal and a detection host; the first acquisition mechanism and the second acquisition mechanism are respectively connected to the transmission terminal; the transmission terminal is connected to the detection host. The electric meter detection device of this invention has a simple structure, accurate detection and high efficiency. By setting a first image acquisition mechanism to collect three sides of the electric meter, and after flipping the electric meter by a flipping mechanism, the second image acquisition mechanism is used to collect the other three sides of the electric meter, so that the external appearance can be collected by one transmission mechanism, and the electric meter can be comprehensively detected, thereby reducing the complexity of the detection process and improving the detection efficiency.

[0007] Therefore, based on the above search and in combination with the existing, when the above scheme is used, the electric meter is only moved, and when the electric meter is inspected, the electric meter is only automatically flipped over without manual flipping. When the electric meter is inspected, it is impossible to detect that the detection device has a short circuit and cut off the power to it, which has limitations. In order to solve the problem that the detection device cannot be detected and cut off the power to it when a short circuit occurs during the inspection of the electric meter, we propose an electric meter detection device. Summary of the Invention

[0008] The object of the present invention is to provide an electric meter detection device to solve the problems raised in the above background technology.

[0009] To achieve the above object, the present invention provides the following technical solutions:

[0010] An electric meter detection device includes a multimeter, wherein a display screen is fixedly mounted on the outer wall of the multimeter, a mounting box is fixedly connected to one end of the multimeter away from the display screen, the upper end of the mounting box abuts against two outer tubes, the bottom end of the inner wall of each outer tube is fixedly connected to an inner tube, the upper end of the inner tube is fixedly connected to a gas box, and the upper end of the gas box is fixedly connected to a contact pin, so that the multimeter can abut against the contacts of the meter to be tested through the contact pin;

[0011] The multimeter can detect the current power of the meter through the contact pin. A disconnect mechanism is fixedly connected between the contact pin and the installation box. When a short circuit occurs between the contact pin and the meter contact and high temperature is generated, the disconnect mechanism can disconnect the contact pin from the meter contact. A recovery mechanism for recovering the inner tube is fixedly installed between the gas box and the inner wall of the installation box. Power-off mechanisms are fixedly installed at both ends of the inner wall of the installation box. Each power-off mechanism can cut off the power to the corresponding contact pin.

[0012] As a further feature of this solution, the disconnection mechanism includes a mating ring, which is fixedly connected to the air box via a plurality of elastic telescopic tubes. The elastic telescopic tubes and the air box are interconnected, and the interiors of the elastic telescopic tubes, the air box and the contact pins are all filled with silicone oil.

[0013] As a further feature of this solution, the outer wall of the stylus is also slidably connected to a round block with a reset function, the upper end of the round block is fixedly connected to a ball block, and the inner wall of the ball block is fixedly connected to a strong magnetic ball through a number of connecting columns. The ball block is slidably connected to the outer wall of the stylus, and the mating ring and the round block are fixedly connected by multiple first pull ropes.

[0014] As a further feature of this solution, the upper end of the air box is rotatably connected to a number of guide wheels, the outer wall of each of the first pull ropes is wrapped around the outer wall of a corresponding guide wheel, and the top end of the inner wall of each of the elastic telescopic tubes is fixedly connected to a second pull rope.

[0015] As a further embodiment of this solution, the recovery mechanism includes a folding air sleeve, which is fixedly connected to the bottom end of the inner wall of the inner tube. A first spring is fixedly connected to the inside of the folding air sleeve. The folding air sleeve is fixedly connected to all the second pull ropes through a third pull rope. A recovery wheel is provided under each of the outer tubes, and each of the recovery wheels is rotatably connected to the inner wall of the installation box.

[0016] As a further feature of this solution, the recovery wheel is connected to the inner wall of the installation box by a reset torsion spring, and the outer wall of each recovery wheel is fixedly connected to a connecting tube, and the connecting tube is wound on the outer wall of the recovery wheel, and the free end of the connecting tube is fixedly connected to the corresponding folding air sleeve.

[0017] As a further feature of this solution, the power-off mechanism includes a telescopic air tube, which is fixedly connected to the adjacent recovery wheel. The outer wall of the telescopic air tube is rotatably connected to a plurality of folding arms, and each of the folding arms is fixedly connected to a first latch tooth on the outer wall. The end of the telescopic air tube away from the recovery wheel is fixedly connected to a conductive plug.

[0018] As a further feature of this solution, a wire is fixedly connected to the inside of the connecting tube, the upper end of the wire is fixedly connected to the bottom of the air box, the outer wall of the wire is passed through the inside of the folding air sleeve, the bottom of the wire is fixedly connected to the conductive plug, and a conductive card slot is provided on the side of the conductive plug away from the telescopic air tube, the conductive card slot is fixedly connected to the inner wall of the installation box, the conductive plug is movably engaged with the conductive card slot, and the conductive card slot is fixedly connected to the multimeter through an electric wire.

[0019] As a further feature of this solution, pull rings are provided on both sides of the left and right sides of the installation box. The end of the pull ring close to the telescopic air tube is fixedly connected to a clamping ring through a number of mating arms. The mating arms are slidably connected to the inside of the installation box, and a plurality of fifth springs are fixedly connected between the pull ring and the installation box. The outer wall of the clamping ring is slidably connected to a plurality of second teeth with a reset function.

[0020] Beneficial effects

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. All the first teeth will be disengaged from the outer wall of the corresponding second teeth. At this time, the recovery wheel will reset and rotate to recycle the connecting pipe. At this time, the outer pipe will abut against the upper end of the installation box to complete the recovery. When the folding air sleeve is extended, it will also drive the movable protective tube to move upward to wrap all parts to prevent high temperature burns on the arms. In the process of contraction of the telescopic air tube, the conductive card slot and the conductive plug will be disengaged to complete the power off. On the one hand, it avoids the risk of further short circuit caused by continuous power supply and reduces the possibility of equipment damage. On the other hand, it also prevents the fire hazard caused by excessive current, ensuring the safety and stability of the detection work from many aspects.

[0023] 2. The first pull rope will pull the round block and the ball block, and the ball block will slide downward on the outer wall of the stylus, and the ball block will be out of contact with the contact of the meter being tested. Due to gravity, the entire structure inside the outer tube falls downward, and the stylus can complete the connection of the contact and avoid more serious short circuit caused by continuous power supply, reduce equipment damage, and prevent workers from electric shock. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is the front view of the present invention;

[0025] Figure 2 This is a schematic diagram of the internal structure of the installation box of the present invention;

[0026] Figure 3 This is a rear view of the internal structure of the outer tube of the present invention;

[0027] Figure 4 This is a schematic diagram of the internal structure of the inner tube of the present invention;

[0028] Figure 5 This is a schematic diagram of the second spring position structure of the present invention;

[0029] Figure 6 This is a schematic diagram of the first pull rope position structure of the present invention;

[0030] Figure 7 This is a schematic diagram of the position structure of the foldable air sleeve of the present invention;

[0031] Figure 8 Schematic diagram of the internal structure of the ball block of the present invention;

[0032] Figure 9 It is a schematic structural diagram of the power-off mechanism of the present invention;

[0033] Figure 10 This is a schematic diagram of the conductive slot position structure of the present invention;

[0034] Figure 11 This is a schematic diagram of the internal structure of the chute of the present invention;

[0035] Figure 12 This is a schematic diagram of the first latching tooth position structure of the present invention.

[0036] Figure: 1. Multimeter; 2. Display screen; 3. Shift block; 4. Mounting box; 5. Outer tube; 6. Contact pin; 7. Connecting tube; 8. Reset torsion spring; 9. Recovery wheel; 10. Folding air sleeve; 11. Inner tube; 12. Air box; 13. Elastic expansion tube; 14. Mobile protective tube; 15. Matching ring; 16. Second spring; 17. First pull rope; 18. Round block;

[0037] 19. Ball block; 20. Connecting column; 21. Guide wheel; 22. Third spring; 23. Second pull rope; 24. Third pull rope; 25. Wire; 26. Clamp; 27. Telescopic air tube; 28. Folding arm; 29. First latch;

[0038] 30. Second latch; 31. Conductive latch slot; 32. Conductive plug; 33. Fourth spring; 34. Slide slot; 35. Strong magnetic ball; 36. Fifth spring; 37. Pull ring; 101. Disconnect mechanism; 201. Recycling mechanism; 301. Power-off mechanism. DETAILED DESCRIPTION

[0039] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0040] Example 1: Please refer to Figure 1 - Figure 4As shown, an electric meter detection device includes a multimeter 1, a display screen 2 is fixedly mounted on the outer wall of the multimeter 1, the display screen 2 is used to display data, the outer wall of the multimeter 1 is also rotatably connected to a gear block 3 for adjusting the gear position through a rotating shaft, the end of the multimeter 1 away from the display screen 2 is fixedly connected to a mounting box 4, the upper end of the mounting box 4 is abutted against two outer tubes 5, the two outer tubes 5 are symmetrically distributed at the upper end of the mounting box 4, the outer wall of the outer tube 5 is fixedly connected to a rubber sleeve, the rubber sleeve has good corrosion resistance and high temperature resistance, and also has good insulation, which effectively prevents the occurrence of electric shock to the staff, and the bottom end of the inner wall of each outer tube 5 is fixedly connected to an inner tube 11;

[0041] The upper end of the inner tube 11 is fixedly connected to the gas box 12, and the upper end of the gas box 12 is fixedly connected to the contact pin 6. The multimeter 1 can abut the meter contacts to be tested against each other through the contact pin 6, and the multimeter 1 can detect the current power of the meter through the contact pin 6. A disconnection mechanism 101 is also fixedly connected between the contact pin 6 and the installation box 4. When a short circuit occurs between the contact pin 6 and the meter contact and high temperature is generated, the disconnection mechanism 101 can disconnect the contact pin 6 from the meter contact. A recovery mechanism 201 that can recycle the inner tube 11 is fixedly installed between the gas box 12 and the inner wall of the installation box 4. Power-off mechanisms 301 are fixedly installed on both ends of the inner wall of the installation box 4. Each power-off mechanism 301 can cut off the power to the corresponding contact pin 6.

[0042] Example 2: Please refer to Figure 3 - Figure 8As shown, the disconnect mechanism 101 includes a matching ring 15, which is located above the air box 12. The matching ring 15 and the air box 12 are fixedly connected by multiple elastic telescopic tubes 13. A third spring 22 is fixedly connected to the elastic telescopic tube 13. The third spring 22 can drive the elastic telescopic tube 13 to quickly reset. Multiple elastic telescopic tubes 13 are distributed in a circular ring between the matching ring 15 and the air box 12. The elastic telescopic tube 13 and the air box 12 are interconnected. The interior of the elastic telescopic tube 13, the air box 12 and the contact pin 6 are all filled with silicone oil. Silicone oil is an organic silicon compound whose molecular structure contains silicon-oxygen Si-O bonds and organic groups. When the silicone oil is heated, the molecules gain energy, the thermal motion of the molecules intensifies, and the intermolecular force is mainly the van der Waals force, which is partially overcome, so that the molecular distance The distance increases, resulting in volume expansion. The outer wall of the stylus 6 is also slidably connected to a round block 18 with a reset function. Specifically, the round block 18 is fixedly connected to the air box 12 by a second spring 16, and the second spring 16 is sleeved on the outer wall of the stylus 6. The second spring 16 can drive the round block 18 to quickly reset. The upper end of the round block 18 is fixedly connected to a ball block 19, and the inner wall of the ball block 19 is fixedly connected to a strong magnetic ball 35 through a number of connecting columns 20. The connecting column 20 is made of ceramic material. The ceramic material has good high temperature resistance and corrosion resistance, and also has good insulation. When the connecting column 20 is energized, since the connecting column 20 is made of ceramic material, the current will not flow to the strong magnetic ball 35, thereby preventing the strong magnetic ball 35 from losing its magnetism. The ball block 19 is slidably connected to the outer wall of the stylus 6;

[0043] The matching ring 15 and the round block 18 are fixedly connected by multiple first pull ropes 17. The multiple first pull ropes 17 are distributed in a circular ring between the matching ring 15 and the round block 18. The upper end of the air box 12 is rotatably connected to a plurality of guide wheels 21 through a rotating shaft. Specifically, the upper end of the first pull rope 17 is fixedly connected to the round block 18, and the other end of the first pull rope 17 is fixedly connected to the matching ring 15. The outer wall of each first pull rope 17 is wrapped around the outer wall of a corresponding guide wheel 21. The air box 12, the contact pin 6, the round block 18 and the ball block 19 are all made of copper. Copper has good electrical conductivity. The top end of the inner wall of each elastic telescopic tube 13 is fixedly connected to a second pull rope 23, and each third spring 22 is sleeved on the outer wall of the corresponding second pull rope 23.

[0044] See also Figure 6 、 Figure 7 、 Figure 9As shown, the recovery mechanism 201 includes a folding air sleeve 10, which is fixedly connected to the bottom end of the inner wall of the inner tube 11. The folding air sleeve 10 is made of high-temperature resistant silicone. The silicone material can withstand temperatures between 200°C and 350°C and also has insulation properties. The inside of the folding air sleeve 10 is fixedly connected to a first spring. The folding air sleeve 10 and all the second pull ropes 23 are fixedly connected through a third pull rope 24. The upper end of the folding air sleeve 10 is also fixedly connected to a mobile protective tube 14, which is slidably connected to the outer wall of the inner tube 11. A recovery wheel 9 is provided under each outer tube 5, and each recovery wheel 9 is rotated by a rotating shaft. Connected to the inner wall of the installation box 4, the recovery wheel 9 is connected to the inner wall of the installation box 4 by a reset torsion spring 8, and the reset torsion spring 8 can drive the recovery wheel 9 to quickly reset. The outer wall of each recovery wheel 9 is fixedly connected with a connecting pipe 7, and the inner wall of the connecting pipe 7 is fixedly connected with a plurality of fixing rings. When the connecting pipe 7 is wound on the outer wall of the recovery wheel 9, when the connecting pipe 7 is squeezed, the fixing ring plays a supporting role, effectively preventing the connecting pipe 7 from being squeezed and flattened to affect the internal gas circulation, affecting the internal gas circulation, and the connecting pipe 7 is wound on the outer wall of the recovery wheel 9, and the free end of the connecting pipe 7 is fixedly connected to the corresponding folding air sleeve 10;

[0045] See also Figure 7 、 Figure 9 - Figure 12 As shown, the power-off mechanism 301 includes a telescopic air tube 27, which is fixedly connected to the adjacent recovery wheel 9. The outer wall of the telescopic air tube 27 is rotatably connected to a plurality of folding arms 28. Specifically, the plurality of folding arms 28 are distributed in a circular ring on the outer wall of the telescopic air tube 27. The left end of the folding arm 28 is rotatably connected to the first section of the left end of the telescopic air tube 27 by a rotating shaft, and the right end of the folding arm 28 is rotatably connected to the first section of the right end of the telescopic air tube 27 by a rotating shaft. A first latch 29 is fixedly connected to the outer wall of each folding arm 28, and the end of the telescopic air tube 27 away from the recovery wheel 9 is fixedly connected to a conductive plug 32. A wire 25 is fixedly connected to the inside of the connecting tube 7, and the upper end of the wire 25 is fixedly connected to the bottom of the air box 12. The outer wall of the wire 25 is passed through the interior of the folding air sleeve 10, and the bottom of the wire 25 is fixedly connected to the conductive plug 32.

[0046] A conductive slot 31 is provided on the side of the conductive plug 32 away from the telescopic air tube 27. The conductive slot 31 is fixedly connected to the inner wall of the installation box 4. The conductive plug 32 is movably engaged with the conductive slot 31. The conductive slot 31 is fixedly connected to the multimeter 1 via wires. Pull rings 37 are provided on both sides of the installation box 4. The end of the pull ring 37 close to the telescopic air tube 27 is fixedly connected to the snap ring 26 via a plurality of matching arms. The matching arms are slidably connected to the interior of the installation box 4. A plurality of fifth springs 36 are fixedly connected between the pull ring 37 and the installation box 4. Each fifth spring 36 is sleeved on the outer wall of the corresponding matching arm. The outer wall of the snap ring 26 is slidably connected to a plurality of second latch teeth 30 with a reset function.

[0047] The cam 34 is provided with a plurality of grooves 34 on the outer wall of the clamping ring 26, and the plurality of grooves 34 are distributed in a circular shape on the outer wall of the clamping ring 26. The outer wall of each second latch tooth 30 is slidably connected to the inner wall of the corresponding groove 34. The second latch tooth 30 is fixedly connected to the groove 34 by a fourth spring 33. The fourth spring 33 can drive the second latch tooth 30 to quickly reset. When the second latch tooth 30 is squeezed, the second latch tooth 30 slides toward the inner wall of the groove 34, and the groove 34 can limit the second latch tooth 30 and also has a guiding function, thereby improving the stability of the second latch tooth 30 when moving in the inner wall of the groove 34. The inner wall of the groove 34 and the outer wall of the second latch tooth 30 are both coated with lubricating oil. The lubricating oil can greatly reduce the friction between the second latch tooth 30 and the groove 34, thereby extending the service life of the second latch tooth 30 and the groove 34.

[0048] The working principle of the present invention is as follows: when the electric meter needs to be tested, it is only necessary to bring the outer wall of the ball block 19 into contact with the electric meter contact. When the outer tube 5 is pulled, the outer tube 5 will pull the connecting tube 7 through the inner tube 11 and the folding air sleeve 10. The connecting tube 7 will drive the recovery wheel 9 to rotate. The recovery wheel 9 will drive the telescopic air pipe 27 and all the folding arms 28 to rotate. The folding arms 28 drive the first latch 29 to abut against the outer wall of the second latch 30. The second latch 30 is abutted and shrinks toward the inside of the clamping ring 26. When the first latch 29 is abutted, the second latch 30 shrinks toward the inside of the clamping ring 26. When the 9 stops moving and the recovery wheel 9 is reset and rotated, the first latch 29 and the corresponding outer wall of the second latch 30 are driven to engage with each other through the telescopic air tube 27 and the folding arm 28. When the outer wall of the ball block 19 abuts against the electric meter contact, the current will flow through the ball block 19 to the contact pin 6, and then from the contact pin 6 to the air box 12 and the wire 25, and then through the wire 25 to the conductive plug 32 and the conductive slot 31, and then from the conductive slot 31 to the multimeter 1. The multimeter 1 can detect the voltage and power of the meter, etc. 35 pairs of electric contacts are magnetically attracted by the ball block 19, so the staff can free their hands and do not need to keep their hands on the outer tube 5. When the multimeter range is set much lower than the actual voltage of the meter being tested, the stylus 6 may be subjected to excessive voltage. Or if there is a fault inside the meter being tested, such as a short circuit in the transformer winding, an abnormally high voltage may be generated. When this high voltage acts on the stylus 6, the air between the stylus 6 will also be broken down, generating electric sparks. When the stylus 6 generates sparks, the stylus 6 and the air box 12 will be damaged. When the silicone oil inside the elastic expansion tube 13 expands due to heat, the elastic expansion tube 13 extends, driving the matching ring 15 to move upward. The matching ring 15 pulls all the first pull ropes 17. The guide wheel 21 can guide the first pull ropes 17. The first pull ropes 17 pull the round block 18 and the ball block 19. The ball block 19 slides downward on the outer wall of the contact pin 6. The ball block 19 will break away from the contact with the measured meter. Due to gravity, the entire structure inside the outer tube 5 falls downward, and the contact pin 6 can complete the connection of the contact.

[0049] At the same time, in the process of extending all the elastic telescopic tubes 13, all the second pull ropes 23 will be pulled, the second pull ropes 23 will pull the third pull rope 24, and the third pull rope 24 will pull the folding air sleeve 10. When the folding air sleeve 10 is extended, the telescopic air tube 27 will perform a suction action. At this time, the telescopic air tube 27 contracts, and the telescopic air tube 27 drives all the folding arms 28 to fold, and all the first latching teeth 29 will disengage from the outer wall of the corresponding second latching teeth 30. At this time, the recycling wheel 9 will reset and rotate to recycle the connecting tube 7. At this time, the outer tube 5 will abut against the upper end of the installation box 4 to complete the recycling. When the folding air sleeve 10 is extended, it will also drive the movable protective tube 14 to move upward to wrap all the components to prevent high temperature burns on the arms. In the process of contraction of the telescopic air tube 27, the conductive card slot 31 and the conductive plug 32 will be disengaged to complete the power off.

[0050] When the silicone oil cools down, the elastic telescopic tube 13 will shrink, the matching ring 15 will reset, the second spring 16 will drive the ball block 19 and the round block 18 to reset, and the folding air sleeve 10 will also reset. When the folding air sleeve 10 is reset, it will drive the movable protective tube 14 to reset. When the folding air sleeve 10 is reset, the gas inside the folding air sleeve 10 will enter the telescopic air tube 27. The telescopic air tube 27 drives the conductive card slot 31 and the conductive plug 32 to engage with each other. When the telescopic air tube 27 is reset, it will also drive all the folding arms 28 to reset. The folding arms 28 drive the first latching teeth 29 to engage with the outer walls of the corresponding second latching teeth 30.

[0051] The above are only preferred specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solutions and inventive concepts of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. An electric meter detection device, including a multimeter, characterized in that: A display screen is fixedly mounted on the outer wall of the multimeter, and a mounting box is fixedly connected to one end of the multimeter away from the display screen. The upper end of the mounting box is abutted against two outer tubes, and the bottom end of the inner wall of each outer tube is fixedly connected to an inner tube. The upper end of the inner tube is fixedly connected to a gas box, and the upper end of the gas box is fixedly connected to a contact pin, and the multimeter can be abutted against the contacts of the meter to be tested through the contact pin; The multimeter can detect the current power of the meter through the contact pin. A disconnect mechanism is fixedly connected between the contact pin and the installation box. When a short circuit occurs between the contact pin and the meter contact and high temperature is generated, the disconnect mechanism can disconnect the contact pin from the meter contact. A recovery mechanism for recovering the inner tube is fixedly installed between the gas box and the inner wall of the installation box. Power-off mechanisms are fixedly installed at both ends of the inner wall of the installation box. Each power-off mechanism can cut off the power to the corresponding contact pin.

2. An electric meter detection device according to claim 1, characterized in that: The disconnect mechanism includes a matching ring, which is fixedly connected to the air box via a plurality of elastic telescopic tubes. The elastic telescopic tubes and the air box are interconnected, and the interiors of the elastic telescopic tubes, the air box and the contact pins are all filled with silicone oil.

3. The electric meter detection device according to claim 2, characterized in that: The outer wall of the stylus is also slidably connected to a round block with a reset function, the upper end of the round block is fixedly connected to a ball block, and the inner wall of the ball block is fixedly connected to a strong magnetic ball through a number of connecting columns. The ball block is slidably connected to the outer wall of the stylus, and the matching ring and the round block are fixedly connected by multiple first pull ropes.

4. The electric meter detection device according to claim 3, characterized in that: The upper end of the air box is rotatably connected to a plurality of guide wheels, the outer wall of each of the first pull ropes is wound around the outer wall of a corresponding guide wheel, and the top end of the inner wall of each of the elastic telescopic tubes is fixedly connected to a second pull rope.

5. The electric meter detection device according to claim 1, characterized in that: The recovery mechanism includes a folding air sleeve, which is fixedly connected to the bottom end of the inner wall of the inner tube. A first spring is fixedly connected to the inside of the folding air sleeve. The folding air sleeve is fixedly connected to all the second pull ropes via a third pull rope. A recovery wheel is provided under each of the outer tubes, and each of the recovery wheels is rotatably connected to the inner wall of the installation box.

6. The electric meter detection device according to claim 5, characterized in that: The recovery wheel is connected to the inner wall of the installation box through a reset torsion spring. The outer wall of each recovery wheel is fixedly connected to a connecting pipe, and the connecting pipe is wound on the outer wall of the recovery wheel. The free end of the connecting pipe is fixedly connected to the corresponding folding air sleeve.

7. The electric meter detection device according to claim 1, characterized in that: The power-off mechanism includes a telescopic air tube, which is fixedly connected to the adjacent recovery wheel. The outer wall of the telescopic air tube is rotatably connected to a plurality of folding arms, and a first latch is fixedly connected to the outer wall of each folding arm. The end of the telescopic air tube away from the recovery wheel is fixedly connected to a conductive plug.

8. The electric meter detection device according to claim 6, characterized in that: A wire is fixedly connected to the inside of the connecting tube, the upper end of the wire is fixedly connected to the bottom of the air box, the outer wall of the wire is passed through the inside of the folding air sleeve, the bottom of the wire is fixedly connected to the conductive plug, and a conductive card slot is provided on the side of the conductive plug away from the telescopic air tube. The conductive card slot is fixedly connected to the inner wall of the installation box, the conductive plug is movably engaged with the conductive card slot, and the conductive card slot is fixedly connected to the multimeter through an electric wire.

9. The electric meter detection device according to claim 8, characterized in that: Pull rings are provided on both the left and right sides of the installation box. The end of the pull ring close to the telescopic air tube is fixedly connected to a clamping ring through a plurality of mating arms. The mating arms are slidably connected to the inside of the installation box, and a plurality of fifth springs are fixedly connected between the pull ring and the installation box. The outer wall of the clamping ring is slidably connected to a plurality of second teeth with a reset function.

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