An ammeter for micro-current detection with an auxiliary calibration device

Abstract

The present invention relates to the technical field of ammeters, and discloses an ammeter for detecting microcurrents with an auxiliary calibration device, comprising a support base, characterized in that a moving mechanism is provided on the top of the support base, a second mounting plate is provided on the top of the moving mechanism, an ammeter body is provided on the top of the second mounting plate, positioning mechanisms are provided on both sides of the ammeter body, and a moving mechanism is provided on the top of the second mounting plate. The ammeter for detecting microcurrents with the auxiliary calibration device can achieve the purpose of calibrating the ammeter body, can 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. At the same time, it can achieve the purpose of moving the position of the ammeter body, so that the ammeter body can be used in different positions, reducing the limitations on the use position.

Description

Technical Field

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

[0002] An ammeter is based on the force exerted on a current-carrying conductor in a magnetic field. Inside the ammeter, there's a permanent magnet, generating a magnetic field between its poles. Within this magnetic field lies a coil, each end of which has a spring. Each spring is connected to a terminal on the ammeter. A rotating shaft connects the spring and coil, and a pointer is located at the front of the shaft, facing the ammeter.

[0003] Patent website announcement number CN 217587298 U discloses an ammeter housing for current detection, comprising a fixed base plate, a connecting clamp fixedly connected to one side of the fixed base plate, a threaded sleeve fixedly connected to one side of the connecting clamp, a threaded rotating rod threadedly connected to the inner wall of the threaded sleeve, one end of the threaded rotating rod fixedly connected to a turntable, one end of the threaded rotating rod fixedly connected to a movable clamp, one end of the threaded rotating rod movably connected to a fixed sleeve, and the bottom of the fixed sleeve fixedly connected to a supporting base plate. The ammeter housing for current detection can achieve the purpose of better stability, solving the problem of poor stability of general ammeter housings for current detection. The ammeter housing for current detection can be adjusted to a horizontal angle, avoiding data errors caused by tilting the device, improving the precision of the ammeter housing for current detection, and thus enhancing the practicality of the ammeter housing for current detection.

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

[0005] The object of the present invention is to provide an ammeter for micro-current detection 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 provided on the top of the support base, a second mounting plate is provided on the top of the moving mechanism, an ammeter body is provided on the top of the second mounting plate, positioning mechanisms are provided on both sides of the ammeter body, and a calibration mechanism is provided 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, and a slide rail is slidably connected to the tooth plate, and 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, and a first spur gear is meshed with the surface of the tooth plate, and the inner ring of the first spur gear is fixedly connected to the rotating rod, and the second spur gear is fixedly connected to the surface of the rotating rod on both sides, and the third spur gear is meshed with the inner ring of the third spur gear. The first vertical plate is rotatably connected to both sides of the support shaft surface, and the bottom of the first vertical plate is fixedly connected to the base, and the bottom is fixedly connected to the top of the second mounting plate.

[0008] Preferably, there are two tooth plates, which are symmetrically arranged on the right side of the top of the second mounting plate. The two tooth plates have the same length. 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. By setting the arc plate, the purpose of auxiliary calibration of the ammeter body can be achieved.

[0010] Preferably, a limiting plate is fixedly connected to the right side of the ammeter body, a limiting slot is provided in the limiting plate, a limiting rod is inserted into the limiting slot, a second fixed plate is fixedly connected to the surface of the limiting rod, and the second fixed 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 to 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 the first support frame, the side of the first support frame away from the ammeter body is fixedly connected to the 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. The first support frame is set to form a supporting force on the positioning wheel.

[0013] Preferably, a spring is sleeved on the surface of the crossbar, 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 perform preliminary positioning of the ammeter body.

[0014] Preferably, a sleeve is fixedly connected to the fixing frame, a positioning rod is slidably connected to the sleeve, a first mounting plate is fixedly connected to the 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 support members are rotatably connected on both sides of the surface of the threaded rod, 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, the surface of the threaded rod is threadedly connected to a placement rack, a sliding groove is provided in the support seat, the placement rack is slidably connected to the sliding groove, the bottom of the placement rack is fixedly connected to a connecting plate, a guide rod is slidably connected in the connecting plate, and third fixing plates are 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 microcurrent detection with an auxiliary calibration device, which has the following beneficial effects:

[0018] 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.

[0019] 2. The micro-current detection ammeter with the auxiliary calibration device can make the positioning wheels on both sides cling 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.

[0020] 3. The microcurrent detection ammeter with an auxiliary calibration device moves the positioning plates on both sides 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.

[0021] 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

[0022] 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. Those skilled in the art can also derive other drawings based on these drawings without inventive work.

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 It is a schematic cross-sectional view of the overall structure of the present invention;

[0025] Figure 3 This is a schematic diagram of the coordination between the calibration mechanism and the positioning mechanism of the present invention;

[0026] Figure 4 It is a schematic diagram of the calibration mechanism of the present invention;

[0027] Figure 5 for Figure 4 A schematic diagram of the structure at center A;

[0028] Figure 6 This is a schematic diagram of the positioning mechanism of the present invention;

[0029] Figure 7 Schematic diagram of the moving mechanism of the present invention.

[0030] 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

[0031] 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.

[0032] The present invention provides a technical solution: Example 1:

[0033] Combine 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 provided on the top of the support base 1, a second mounting plate 6 is provided on the top of the moving mechanism 4, an ammeter body 5 is provided on the top of the second mounting plate 6, positioning mechanisms 3 are provided on both sides of the ammeter body 5, and a calibration mechanism 2 is provided on the top of the second mounting plate 6.

[0034] 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 to 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. The surface of the tooth plate 29 is meshed with a first spur gear 26. The inner ring of the first spur gear 26 is fixedly connected to a rotating rod 201. The second spur gear 28 is fixedly connected to both sides of the surface of the rotating rod 201. The surface of the second spur gear 28 is meshed with a third spur gear 202. The inner ring of the third spur gear 202 is fixedly connected to a support shaft 23. The surface of the support shaft 23 is rotatably connected to a first vertical plate 24. The bottom of the first vertical plate 24 is fixedly connected to a base 25, and the bottom is fixedly connected to the top of the second mounting plate 6.

[0035] 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 spur gear 26, the second spur gear 28 and the first spur gear 26 can be driven to rotate synchronously.

[0036] 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, and 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 fixed plates 21, and the side of the arc-shaped plate 203 away from the limiting member 22 is fixedly connected to the surface of the support shaft 23. By setting the arc-shaped plate 203, the purpose of auxiliary calibration of the ammeter body 5 can be achieved.

[0037] Furthermore, a limiting plate 204 is fixedly connected to the right side of the ammeter body 5, a limiting slot is provided in the limiting plate 204, a limiting rod 206 is inserted into the limiting slot, a second fixing plate 205 is fixedly connected to the surface of the limiting rod 206, and the second fixing plate 205 is fixedly connected to the top of the tooth plate 29.

[0038] 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. Example 2:

[0039] See Figure 6 , and 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 in 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 spur 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 spur gear 26, a second spur gear 28 is fixedly connected to both sides of the surface of the rotating rod 201, and a third spur gear 28 is meshed on the surface of the second spur gear 28 202. The inner ring of the third spur gear 202 is fixedly connected to the support shaft 23. Both sides of the surface of the support shaft 23 are rotatably connected to the first vertical plates 24. 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 spur gear 26, the second spur gear 28 and the first spur gear 26 can be driven to rotate synchronously.

[0040] 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 to 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. The fixing frame 32 is fixedly connected to the top of the second mounting plate 6. The first support frame 31 is set to form a supporting force on the positioning wheel 39.

[0041] 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 perform preliminary positioning of the ammeter body 5.

[0042] Furthermore, a sleeve 37 is fixedly connected to the fixing frame 32, and a positioning rod 33 is slidably connected to the sleeve 37. The side of the positioning rod 33 close to the ammeter body 5 is fixedly connected to the first mounting plate 38, 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. Example 3:

[0043] See Figure 7 , and 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 in 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 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 on 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 are of 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.

[0044] 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 first support frame 31 is fixedly connected to the second support frame 36 on the side away from the ammeter body 5. The second support frame 36 is slidably connected to 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 provided to form a supporting force for the positioning wheel 39. The surface of the cross bar 34 is sleeved with a spring, which is provided 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, and the ammeter body 5 can be preliminarily positioned. The sleeve 37 is fixedly connected to the fixing frame 32, and the positioning rod 33 is slidably connected to the sleeve 37. The side of the positioning rod 33 close to the ammeter body 5 is fixedly connected to the first mounting plate 38, 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.

[0045] Furthermore, the moving mechanism 4 includes a threaded rod 44, which is arranged at the top of the support seat 1. Both sides of the surface of the threaded rod 44 are rotatably connected to 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.

[0046] Furthermore, a placement rack 43 is threadedly connected to the surface of the threaded rod 44, a slide groove is provided in the support seat 1, the placement rack 43 is slidably connected to 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 to the connecting plate 45, and a third fixed plate 41 is fixedly connected to 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 guide rod 46 is provided to guide the placement rack 43.

[0047] The second and third sprockets 201 and 202 are rotated synchronously, and the arc plate 203 is driven to turn over. When the ammeter body 5 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.

[0048] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a..." does not exclude the presence of additional identical elements in the process, method, article, or device comprising the element.

Claims

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

2. The micro-current detection ammeter with an auxiliary calibration device according to claim 1, characterized in that: The number of the 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: 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 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).

4. The micro-current detection ammeter with an auxiliary calibration device according to claim 3, 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 to a locking nut, and the locking nut is provided on one side of the limiting plate (204).

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

6. The micro-current detection ammeter with an auxiliary calibration device according to claim 5, 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).

7. The micro-current detection ammeter with an auxiliary calibration device according to claim 5, characterized in that: A sleeve (37) is fixedly connected to the fixing frame (32), a positioning rod (33) is slidably connected to 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).

8. The micro-current detection ammeter with an 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 on the top of the support seat (1), and 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 on the top of the support seat (1), and a rotating member being fixedly connected to the right side of the threaded rod (44).

9. The micro-current detection ammeter with an auxiliary calibration device according to claim 8, characterized in that: The surface of the threaded rod (44) is threadedly connected to a placement rack (43), a slide groove is provided in the support seat (1), the placement rack (43) is slidably connected in the slide groove, the bottom of the placement rack (43) is fixedly connected to a connecting plate (45), the connecting plate (45) is slidably connected to a guide rod (46), both sides of the guide rod (46) are fixedly connected to a third fixing plate (41), and the third fixing plate (41) is fixedly connected to the surface of the support seat (1).

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