Microcurrent detection ammeter with auxiliary calibration device

Abstract

The invention relates to the technical field of ampere meters, and discloses a micro-current detection ampere meter with an auxiliary calibration device, which comprises a supporting seat, and is characterized in that a moving mechanism is arranged at the top of the supporting seat, a second mounting plate is arranged at the top of the moving mechanism, and an ampere meter body is arranged at the top of the second mounting plate; positioning mechanisms are arranged on the two sides of the ampere meter body, and a moving mechanism is arranged on the top of the second mounting plate. According to the micro-current detection ammeter with the auxiliary calibration device, the ammeter body can be calibrated, the measurement error of the ammeter body can be reduced, the measurement accuracy of the ammeter is improved, the calibrated ammeter can respond to the current change more quickly and accurately, the working efficiency is improved, and the cost is reduced. Meanwhile, the purpose of moving the ampere meter body can be achieved, the ampere meter body can be used at different positions, and the limitation of the using position is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of ammeters, in particular to an ammeter for micro-current detection with an auxiliary calibration device. Background Art

[0002] The ammeter is made based on the effect of magnetic field force on a conductor carrying current in a magnetic field. There is a permanent magnet inside the ammeter, which generates a magnetic field between the poles. There is a coil in the magnetic field, with a hairspring spring at each end of the coil. Each spring is connected to a terminal of the ammeter. A rotating shaft connects the spring and the coil. There is a pointer at the front end of the rotating shaft relative to the ammeter.

[0003] The patent network announcement number CN 217587298 U discloses an ammeter housing for current detection, including a fixed base plate, one side of the fixed base plate is fixedly connected to a connecting card plate, one side of the connecting card plate is fixedly connected to a threaded sleeve, the inner wall of the threaded sleeve is threadedly connected to a threaded rotating rod, one end of the threaded rotating rod is fixedly connected to a turntable, one end of the threaded rotating rod is fixedly connected to an active card plate, one end of the threaded rotating rod is movably connected to a fixed clamping sleeve, and the bottom of the fixed clamping sleeve is fixedly connected to a supporting base plate. The ammeter housing for current detection can achieve the purpose of better stability, solve the problem of poor stability of the general ammeter housing for current detection, can adjust the ammeter housing for current detection to a horizontal angle, avoid data errors caused by the tilt of the device, improve the precision of the ammeter housing for current detection, and thus improve the practicality of the ammeter housing for current detection.

[0004] The applicant believes that the following disadvantages exist: the housing of the current detection ammeter does not have the function of assisting in the calibration of the ammeter. When the ammeter is offset in use, it is easy to increase the measurement error, thereby reducing the measurement accuracy of the ammeter, which is defective. Summary of the invention

[0005] The object of the present invention is to provide an ammeter for detecting micro-current with an auxiliary calibration device to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solution: an ammeter for microcurrent detection with an auxiliary calibration device, comprising a support base, characterized in that a moving mechanism is arranged on the top of the support base, a second mounting plate is arranged on the top of the moving mechanism, an ammeter body is arranged on the top of the second mounting plate, positioning mechanisms are arranged on both sides of the ammeter body, and a calibration mechanism is arranged on the top of the second mounting plate.

[0007] The calibration mechanism includes a tooth plate, which is arranged on the top of the second mounting plate, a slide rail is slidably connected to the tooth plate, the slide rail is fixedly connected to the top of the second mounting plate, a pull plate is fixedly connected to the top of the tooth plate, a first spur gear is meshed with the surface of the tooth plate, a rotating rod is fixedly connected to the inner ring of the first spur gear, second spur gears are fixedly connected to both sides of the surface of the rotating rod, a third spur gear is meshed with the inner ring of the second spur gear, a supporting shaft is fixedly connected to the inner ring of the third spur gear, a first vertical plate is rotatably connected to both sides of the surface of the supporting shaft, a base is fixedly connected to the bottom of the first vertical plate, and the bottom is fixedly connected to the top of the second mounting plate.

[0008] Preferably, the number of the tooth plates is two, and the two tooth plates are symmetrically arranged on the top right side of the second mounting plate. The two tooth plates have the same length, and with the cooperation of the tooth plates and the first spur gear, the second spur gear and the first spur gear can be driven to rotate synchronously.

[0009] Preferably, a first fixed plate is fixedly connected to the right side of the ammeter body, a limiting groove is provided in the first fixed plate, a limiting member is inserted in the limiting groove, an arc plate is fixedly connected to the middle of the surface of the limiting member, the arc plate is arranged between the two first fixed plates, and the side of the arc plate away from the limiting member is fixedly connected to the surface of the support shaft, and the purpose of auxiliary calibration of the ammeter body can be achieved by setting the arc plate.

[0010] Preferably, a limiting plate is fixedly connected to the right side of the ammeter body, a limiting groove is provided in the limiting plate, a limiting rod is inserted in the limiting groove, a second fixing plate is fixedly connected to the surface of the limiting rod, and the second fixing plate is fixedly connected to the top of the tooth plate. The purpose of limiting the ammeter body can be achieved by setting the limiting rod.

[0011] Preferably, the surface of the limit rod is provided with a thread, and the surface of the limit rod is threadedly connected with a locking nut, and the locking nut is arranged on one side of the limit plate. By threading the locking nut to the surface of the limit rod, the limit member and the arc plate can be positioned, thereby achieving the purpose of calibrating the ammeter body, reducing the measurement error of the ammeter body, and thus improving the measurement accuracy of the ammeter.

[0012] Preferably, the positioning mechanism includes positioning wheels, and the positioning wheels are arranged on both sides of the ammeter body. The surface of the positioning wheel is rotatably connected to a first support frame, and the side of the first support frame away from the ammeter body is fixedly connected to a second support frame, and the second support frame is slidably connected to a cross bar, and the side of the cross bar away from the second support frame is fixedly connected to a fixing frame, and the fixing frame is fixedly connected to the top of the second mounting plate. By setting the first support frame, a supporting force can be formed on the positioning wheel.

[0013] Preferably, a spring is sleeved on the surface of the cross bar, and the spring is arranged on one side of the second positioning plate. Under the elastic potential energy of the spring itself, the positioning wheels on both sides can be tightly attached to the two sides of the ammeter body, so as to preliminarily position the ammeter body.

[0014] Preferably, a sleeve is fixedly connected inside the fixing frame, a positioning rod is slidably connected inside the sleeve, a first mounting plate is fixedly connected to a side of the positioning rod close to the ammeter body, and the first mounting plate is fixedly connected to the top of the second mounting plate. Under the extrusion of the ammeter body, the positioning plates on both sides move in directions away from each other, and at the same time, the positioning rod slides inside the sleeve, which can ensure the stability of the positioning wheel itself and improve the use effect of the positioning wheel.

[0015] Preferably, the moving mechanism includes a threaded rod, which is arranged on the top of the support seat, and both sides of the surface of the threaded rod are rotatably connected with support members, and the support members are fixedly connected to the top of the support seat. The two support members are symmetrically arranged on the top of the support seat, and a rotating member is fixedly connected to the right side of the threaded rod. During the rotation of the threaded rod, the placement rack can be driven to move left and right.

[0016] Preferably, a placement rack is threadedly connected to the surface of the threaded rod, a slide groove is opened in the support seat, the placement rack is slidably connected in the slide groove, a connecting plate is fixedly connected to the bottom of the placement rack, a guide rod is slidably connected in the connecting plate, a third fixing plate is fixedly connected on both sides of the guide rod, and the third fixing plate is fixedly connected to the surface of the support seat. The guide rod is provided to guide the placement rack.

[0017] Compared with the prior art, the present invention provides an ammeter for micro-current detection with an auxiliary calibration device, which has the following beneficial effects: 1. The micro-current detection ammeter with an auxiliary calibration device can achieve the purpose of calibrating the ammeter body, reduce the measurement error of the ammeter body, thereby improving the measurement accuracy of the ammeter, and the calibrated ammeter can respond to current changes more quickly and accurately, thereby improving work efficiency.

[0018] 2. The micro-current detection ammeter with an auxiliary calibration device can make the positioning wheels on both sides closely adhere to the two sides of the ammeter body under the elastic potential energy of the spring itself, so as to perform preliminary positioning of the ammeter body.

[0019] 3. The micro-current detection ammeter with an auxiliary calibration device can move the positioning plates on both sides in directions away from each other under the squeezing of the ammeter body, and at the same time, the positioning rod slides inside the sleeve, which can ensure the stability of the positioning wheel itself and improve the use effect of the positioning wheel.

[0020] 4. The micro-current detection ammeter with an auxiliary calibration device can drive the placement frame to move left and right during the rotation of the threaded rod, thereby achieving the purpose of moving the position of the ammeter body, enabling the ammeter body to be used in different positions, reducing the limitations on the use position. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative labor: Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic cross-sectional view of the overall structure of the present invention; Figure 3 It is a schematic diagram of the coordination between the calibration mechanism and the positioning mechanism of the present invention; Figure 4 It is a schematic diagram of the calibration mechanism of the present invention; Figure 5 for Figure 4 A schematic diagram of the structure enlargement in the middle; Figure 6 It is a schematic diagram of the positioning mechanism of the present invention; Figure 7 It is a schematic diagram of the moving mechanism of the present invention.

[0022] In the figure: 1. support seat; 2. calibration mechanism; 21. first fixed plate; 22. limit member; 23. support shaft; 24. first vertical plate; 25. base; 26. first flat gear; 27. pull plate; 28. second flat gear; 29. ​​tooth plate; 201. rotating rod; 202. third flat gear; 203. arc plate; 204. limit plate; 205. second fixed plate; 206. limit rod; 3. positioning mechanism; 31. first support frame; 32. fixed frame; 33. positioning rod; 34. cross bar; 35. second positioning plate; 36. second support frame; 37. sleeve; 38. first mounting plate; 39. positioning wheel; 4. moving mechanism; 41. third fixed plate; 42. support member; 43. placement frame; 44. threaded rod; 45. connecting plate; 46. guide rod; 5. ammeter body; 6. second mounting plate. DETAILED DESCRIPTION

[0023] 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.

[0024] The present invention provides a technical solution: Embodiment 1:

[0025] Combination Figure 1-2 to Figure 3-5 An ammeter for microcurrent detection with an auxiliary calibration device includes a support base 1, and is characterized in that a moving mechanism 4 is arranged on the top of the support base 1, a second mounting plate 6 is arranged on the top of the moving mechanism 4, an ammeter body 5 is arranged on the top of the second mounting plate 6, positioning mechanisms 3 are arranged on both sides of the ammeter body 5, and a calibration mechanism 2 is arranged on the top of the second mounting plate 6.

[0026] The calibration mechanism 2 includes a tooth plate 29, which is arranged on the top of the second mounting plate 6. A slide rail is slidably connected inside the tooth plate 29, and the slide rail is fixedly connected to the top of the second mounting plate 6. A pull plate 27 is fixedly connected to the top of the tooth plate 29. A first flat gear 26 is meshed on the surface of the tooth plate 29, and a rotating rod 201 is fixedly connected to the inner ring of the first flat gear 26. Second flat gears 28 are fixedly connected on both sides of the surface of the rotating rod 201. A third flat gear 202 is meshed on the surface of the second flat gear 28, and a support shaft 23 is fixedly connected to the inner ring of the third flat gear 202. A first vertical plate 24 is rotatably connected to both sides of the surface of the support shaft 23. A base 25 is fixedly connected to the bottom of the first vertical plate 24, and the bottom is fixedly connected to the top of the second mounting plate 6.

[0027] Furthermore, there are two tooth plates 29, which are symmetrically arranged on the top right side of the second mounting plate 6. The two tooth plates 29 have the same length. With the cooperation of the tooth plates 29 and the first flat gear 26, the second flat gear 28 and the first flat gear 26 can be driven to rotate synchronously.

[0028] Furthermore, a first fixed plate 21 is fixedly connected to the right side of the ammeter body 5, a limiting groove is provided in the first fixed plate 21, a limiting member 22 is inserted in the limiting groove, an arc plate 203 is fixedly connected to the middle of the surface of the limiting member 22, the arc plate 203 is arranged between the two first fixed plates 21, and the side of the arc plate 203 away from the limiting member 22 is fixedly connected to the surface of the support shaft 23. By setting the arc plate 203, the purpose of auxiliary calibration of the ammeter body 5 can be achieved.

[0029] Furthermore, a limit plate 204 is fixedly connected to the right side of the ammeter body 5, a limit slot is defined in the limit plate 204, a limit rod 206 is inserted into the limit slot, a second fixed plate 205 is fixedly connected to the surface of the limit rod 206, and the second fixed plate 205 is fixedly connected to the top of the tooth plate 29.

[0030] Furthermore, a thread is provided on the surface of the limit rod 206, and a locking nut is threadedly connected to the surface of the limit rod 206. The locking nut is provided on one side of the limit plate 204. By threading the locking nut to the surface of the limit rod 206, the limit member 22 and the arc plate 203 can be positioned, thereby achieving the purpose of calibrating the ammeter body 5, reducing the measurement error of the ammeter body 5, and thus improving the measurement accuracy of the ammeter. Embodiment 2:

[0031] See also Figure 6 On the basis of the first embodiment, the calibration mechanism 2 further comprises a tooth plate 29, the tooth plate 29 is arranged on the top of the second mounting plate 6, a slide rail is slidably connected inside the tooth plate 29, the slide rail is fixedly connected to the top of the second mounting plate 6, a pull plate 27 is fixedly connected to the top of the tooth plate 29, a first flat gear 26 is meshed on the surface of the tooth plate 29, a rotating rod 201 is fixedly connected to the inner ring of the first flat gear 26, a second flat gear 28 is fixedly connected to both sides of the surface of the rotating rod 201, and a third flat gear 28 is meshed on the surface of the second flat gear 28 202, the inner ring of the third flat gear 202 is fixedly connected to the support shaft 23, and the first vertical plates 24 are rotatably connected to both sides of the surface of the support shaft 23. The bottom of the first vertical plate 24 is fixedly connected to the base 25, and the bottom is fixedly connected to the top of the second mounting plate 6. There are two tooth plates 29, and the two tooth plates 29 are symmetrically arranged on the right side of the top of the second mounting plate 6. The two tooth plates 29 have the same length. With the cooperation of the tooth plates 29 and the first flat gear 26, the second flat gear 28 and the first flat gear 26 can be driven to rotate synchronously.

[0032] Furthermore, the positioning mechanism 3 includes positioning wheels 39, which are arranged on both sides of the ammeter body 5. The surface of the positioning wheel 39 is rotatably connected to the first support frame 31, and the side of the first support frame 31 away from the ammeter body 5 is fixedly connected to the second support frame 36. The second support frame 36 is slidably connected with a cross bar 34, and the side of the cross bar 34 away from the second support frame 36 is fixedly connected to a fixing frame 32, and the fixing frame 32 is fixedly connected to the top of the second mounting plate 6. The first support frame 31 is arranged to form a supporting force for the positioning wheel 39.

[0033] Furthermore, a spring is sleeved on the surface of the cross bar 34 , and the spring is arranged on one side of the second positioning plate 35 . Under the elastic potential energy of the spring itself, the positioning wheels 39 on both sides can be tightly attached to the two sides of the ammeter body 5 , so as to preliminarily position the ammeter body 5 .

[0034] Furthermore, a sleeve 37 is fixedly connected inside the fixed frame 32, and a positioning rod 33 is slidably connected inside the sleeve 37. A first mounting plate 38 is fixedly connected to the side of the positioning rod 33 close to the ammeter body 5, and the first mounting plate 38 is fixedly connected to the top of the second mounting plate 6. Under the extrusion of the ammeter body 5, the positioning plates on both sides move in directions away from each other, and at the same time, the positioning rod 33 slides inside the sleeve 37, which can ensure the stability of the positioning wheel 39 itself and improve the use effect of the positioning wheel 39. Embodiment three:

[0035] See also Figure 7 On the basis of the first and second embodiments, the calibration mechanism 2 further comprises a tooth plate 29, the tooth plate 29 is arranged on the top of the second mounting plate 6, a slide rail is slidably connected inside the tooth plate 29, the slide rail is fixedly connected to the top of the second mounting plate 6, a pull plate 27 is fixedly connected to the top of the tooth plate 29, a first flat gear 26 is meshed on the surface of the tooth plate 29, a rotating rod 201 is fixedly connected to the inner ring of the first flat gear 26, second flat gears 28 are fixedly connected on both sides of the surface of the rotating rod 201, and a third flat gear 28 is meshed on the surface of the second flat gear 28 The flat gear 202, the inner ring of the third flat gear 202 is fixedly connected to the support shaft 23, and the first vertical plates 24 are rotatably connected to both sides of the surface of the support shaft 23. The bottom of the first vertical plate 24 is fixedly connected to the base 25, and the bottom is fixedly connected to the top of the second mounting plate 6. There are two tooth plates 29, and the two tooth plates 29 are symmetrically arranged on the right side of the top of the second mounting plate 6. The two tooth plates 29 have the same length. With the cooperation of the tooth plates 29 and the first flat gear 26, the second flat gear 28 and the first flat gear 26 can be driven to rotate synchronously.

[0036] The positioning mechanism 3 includes a positioning wheel 39, which is arranged on both sides of the ammeter body 5. The surface of the positioning wheel 39 is rotatably connected to the first support frame 31, and the side of the first support frame 31 away from the ammeter body 5 is fixedly connected to the second support frame 36, and the second support frame 36 is slidably connected with a cross bar 34, and the side of the cross bar 34 away from the second support frame 36 is fixedly connected to a fixing frame 32, and the fixing frame 32 is fixedly connected to the top of the second mounting plate 6. The first support frame 31 is arranged to form a supporting force for the positioning wheel 39, and a spring is sleeved on the surface of the cross bar 34, and the spring is arranged on one side of the second positioning plate 35. Under the elasticity of the spring itself Under the potential energy, the positioning wheels 39 on both sides can be tightly attached to the two sides of the ammeter body 5, so that the ammeter body 5 can be preliminarily positioned. The fixing frame 32 is fixedly connected with a sleeve 37, and the sleeve 37 is slidably connected with a positioning rod 33. The side of the positioning rod 33 close to the ammeter body 5 is fixedly connected with a first mounting plate 38, and the first mounting plate 38 is fixedly connected to the top of the second mounting plate 6. Under the squeezing of the ammeter body 5, the positioning plates on both sides move in directions away from each other, and at the same time, the positioning rod 33 slides inside the sleeve 37, which can ensure the stability of the positioning wheel 39 itself and improve the use effect of the positioning wheel 39.

[0037] Furthermore, the moving mechanism 4 includes a threaded rod 44, which is arranged on the top of the support seat 1. Both sides of the surface of the threaded rod 44 are rotatably connected with support members 42, and the support members 42 are fixedly connected to the top of the support seat 1. The two support members 42 are symmetrically arranged on the top of the support seat 1. A rotating member is fixedly connected to the right side of the threaded rod 44. During the rotation of the threaded rod 44, the placement rack 43 can be driven to move left and right.

[0038] Furthermore, a placement rack 43 is threadedly connected to the surface of the threaded rod 44, a slide groove is opened in the support seat 1, the placement rack 43 is slidably connected in the slide groove, a connecting plate 45 is fixedly connected to the bottom of the placement rack 43, a guide rod 46 is slidably connected in the connecting plate 45, and a third fixed plate 41 is fixedly connected on both sides of the guide rod 46, and the third fixed plate 41 is fixedly connected to the surface of the support seat 1. The placement rack 43 is guided by the set guide rod 46.

[0039] In actual operation, when this device is used, first, the ammeter body 5 is placed between the positioning wheels 39 on both sides. At this time, under the squeezing of the ammeter body 5, the positioning plates on both sides move in directions away from each other, and at the same time, the positioning rod 33 slides inside the sleeve 37, which can ensure the stability of the positioning wheel 39 itself and improve the use effect of the positioning wheel 39. At this time, the cross bar 34 slides inside the second support frame 36. Under the elastic potential energy of the spring itself, the positioning wheels 39 on both sides can be tightly attached to the two sides of the ammeter body 5, so that the ammeter body 5 can be preliminarily positioned. After the ammeter body 5 is preliminarily positioned, the pull plate 27 is pushed, and the toothed plate 29 moves, and drives the first flat gear 26 and the rotating rod 201 to rotate synchronously. At this time, the second flat gear 28 and the third flat gear 202 rotate synchronously, and drive the arc plate 203 to flip. When the limit rod 206 is inserted into the limit plate 204 When the arc plate 203 is in the limiting groove opened inside, the arc plate 203 is between the first fixed plates 21 on both sides, and the limiting member 22 can be inserted into the limiting groove opened inside the first fixed plate 21. Finally, by threading the locking nut to the surface of the limiting rod 206, the limiting member 22 and the arc plate 203 can be positioned, thereby achieving the purpose of calibrating the ammeter body 5, reducing the measurement error of the ammeter body 5, thereby improving the measurement accuracy of the ammeter, and the calibrated ammeter can respond to current changes more quickly and accurately, thereby improving work efficiency. When the ammeter body 5 is in use, the rotating member can be rotated to drive the threaded rod 44 to rotate. During the rotation of the threaded rod 44, the placement rack 43 can be driven to move left and right, thereby achieving the purpose of moving the position of the ammeter body 5, and the ammeter body 5 can be used in different positions, reducing the limitations on the use position.

[0040] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

Claims

1. An ammeter for detecting microcurrent with an auxiliary calibration device, comprising a support base (1), characterized in that: A moving mechanism (4) is arranged on the top of the support seat (1), a second mounting plate (6) is arranged on the top of the moving mechanism (4), an ammeter body (5) is arranged on the top of the second mounting plate (6), positioning mechanisms (3) are arranged on both sides of the ammeter body (5), and a calibration mechanism (2) is arranged on the top of the second mounting plate (6); The calibration mechanism (2) comprises a tooth plate (29), the tooth plate (29) being arranged at the top of the second mounting plate (6), a slide rail being slidably connected inside the tooth plate (29), the slide rail being fixedly connected to the top of the second mounting plate (6), a pull plate (27) being fixedly connected to the top of the tooth plate (29), a first spur gear (26) being meshed on the surface of the tooth plate (29), a rotating rod (201) being fixedly connected to the inner ring of the first spur gear (26), a second spur gear (28) being fixedly connected to both sides of the surface of the rotating rod (201), a third spur gear (202) being meshed on the surface of the second spur gear (28), a support shaft (23) being fixedly connected to the inner ring of the third spur gear (202), a first vertical plate (24) being rotatably connected to both sides of the surface of the support shaft (23), a base (25) being fixedly connected to the bottom of the first vertical plate (24), and the base (25) being fixedly connected to the top of the second mounting plate (6).

2. The micro-current detection ammeter with an auxiliary calibration device according to claim 1, characterized in that: The number of tooth plates (29) is two, and the two tooth plates (29) are symmetrically arranged on the right side of the top of the second mounting plate (6), and the two tooth plates (29) have the same length.

3. The micro-current detection ammeter with an auxiliary calibration device according to claim 1, characterized in that: A first fixing plate (21) is fixedly connected to the right side of the ammeter body (5); a limiting groove is provided in the first fixing plate (21); a limiting member (22) is inserted into the limiting groove; an arc-shaped plate (203) is fixedly connected to the middle of the surface of the limiting member (22); the arc-shaped plate (203) is arranged between the two first fixing plates (21); and a side of the arc-shaped plate (203) away from the limiting member (22) is fixedly connected to the surface of the support shaft (23).

4. The micro-current detection ammeter with an auxiliary calibration device according to claim 1, characterized in that: The right side of the ammeter body (5) is fixedly connected to a limit plate (204), a limit slot is provided in the limit plate (204), a limit rod (206) is inserted in the limit slot, a second fixed plate (205) is fixedly connected to the surface of the limit rod (206), and the second fixed plate (205) is fixedly connected to the top of the tooth plate (29).

5. The micro-current detection ammeter with auxiliary calibration device according to claim 4, characterized in that: The surface of the limiting rod (206) is provided with a thread, and the surface of the limiting rod (206) is threadedly connected with a locking nut, and the locking nut is arranged on one side of the limiting plate (204).

6. The micro-current detection ammeter with auxiliary calibration device according to claim 1, characterized in that: The positioning mechanism (3) comprises positioning wheels (39), the positioning wheels (39) are arranged on both sides of the ammeter body (5), the surface of the positioning wheels (39) is rotatably connected to a first support frame (31), a side of the first support frame (31) away from the ammeter body (5) is fixedly connected to a second support frame (36), a cross bar (34) is slidably connected inside the second support frame (36), a side of the cross bar (34) away from the second support frame (36) is fixedly connected to a fixing frame (32), and the fixing frame (32) is fixedly connected to the top of the second mounting plate (6).

7. The micro-current detection ammeter with auxiliary calibration device according to claim 6, characterized in that: A spring is sleeved on the surface of the crossbar (34), and the spring is arranged on one side of the second positioning plate (35).

8. The micro-current detection ammeter with auxiliary calibration device according to claim 6, characterized in that: A sleeve (37) is fixedly connected inside the fixing frame (32), a positioning rod (33) is slidably connected inside the sleeve (37), a first mounting plate (38) is fixedly connected to a side of the positioning rod (33) close to the ammeter body (5), and the first mounting plate (38) is fixedly connected to the top of the second mounting plate (6).

9. The micro-current detection ammeter with auxiliary calibration device according to claim 1, characterized in that: The moving mechanism (4) comprises a threaded rod (44), the threaded rod (44) being arranged at the top of the support seat (1), support members (42) being rotatably connected to both sides of the surface of the threaded rod (44), the support members (42) being fixedly connected to the top of the support seat (1), the two support members (42) being symmetrically arranged at the top of the support seat (1), and a rotating member being fixedly connected to the right side of the threaded rod (44).

10. The micro-current detection ammeter with auxiliary calibration device according to claim 9, characterized in that: The surface of the threaded rod (44) is threadedly connected to a placement frame (43), a slide groove is provided in the support seat (1), the placement frame (43) is slidably connected in the slide groove, a connecting plate (45) is fixedly connected to the bottom of the placement frame (43), a guide rod (46) is slidably connected in the connecting plate (45), and third fixing plates (41) are fixedly connected to both sides of the guide rod (46), and the third fixing plate (41) is fixedly connected to the surface of the support seat (1).

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