Ampere meter with device for manually detecting current sensitivity

Abstract

The invention relates to the technical field of detection devices, and discloses an ampere meter with a manual current sensitivity detection device, which comprises a base, and a test mechanism is arranged on the right side of the top of the base. Reciprocating rotation of a fourth rotating shaft enables a first belt pulley to rotate in a reciprocating mode, the first belt pulley enables a second belt pulley to rotate in a reciprocating mode through cooperation of a belt, so that a fifth rotating shaft rotates in a reciprocating mode, the fifth rotating shaft drives a fifth gear to rotate in a reciprocating mode, and therefore a first rack moves back and forth in a reciprocating mode; the distance between the connecting end of the electric wire and the resistance rod and the probe can be changed through the reciprocating motion of the probe, so that the distance of the current flowing through the resistance rod is changed, the magnitude of the power supply current is changed, and the value of the current is displayed through electrorheological. And the probe is buffered by the elastic force of the first spring when the probe reciprocates back and forth on the surface of the resistance rod, so that the probe can more smoothly reciprocate back and forth on the surface of the resistance rod.

Description

Technical Field

[0001] The invention relates to the technical field of detection devices, in particular to an ammeter with a manual current sensitivity detection device. Background Art

[0002] With the continuous development of modern industrial industry, the use of mechanical instruments is very common. The accuracy of ammeters used for electricity is very important, and the detection of ammeters has become a top priority. The current ammeter detection device is relatively simple, not very convenient to use, and has poor performance and is not accurate enough. It can no longer meet the needs of the current rapidly developing industrial industry.

[0003] According to the application number 201510441862.2, a device for manually detecting the sensitivity of current flow includes a circuit device and an adjustment device. The circuit device is provided with a base, a vertical plate, a switch, a power supply, a wire, a support, and an ammeter; the adjustment device is provided with a panel, a shaft, a limit plate, a rotating handle, a turn, a screw, a resistor, a resistor support, and a probe.

[0004] The device has a simple structure and is easy to use. The device is operated by rotating the rotating handle on the top. The rotating handle drives the rotating shaft to rotate. After the rotation, the screw moves freely up and down inside the limit plate. The probe on the screw slides relatively with the resistor, thereby adjusting the size of the connection resistance. After the power is turned on and the switch is turned on, the ammeter changes with the resistance, thereby achieving the purpose of detecting the sensitivity of the ammeter. However, the device does not buffer the probe when it moves up and down, which makes it difficult for the probe to move on the surface of the resistor rod, making the data displayed by the ammeter inaccurate. Summary of the invention

[0005] The object of the present invention is to provide an ammeter with a manual current detection sensitivity device to solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: an ammeter with a manual current sensitivity detection device, comprising a base, an ammeter, a power supply, and a switch, wherein a testing mechanism is arranged on the right side of the top of the base, a fixing mechanism is arranged on the top of the base, a resistance rod is arranged in the fixing mechanism, and a pressing mechanism is arranged on the top of the base near the left side of the fixing mechanism; The testing mechanism comprises a rotating assembly and a buffer assembly, wherein the rotating assembly is arranged on the right side of the top of the base, and the buffer assembly is arranged inside the rotating assembly; The rotating assembly includes a first rotating shaft, the first rotating shaft is rotatably connected to the right side of the top of the base, the first rotating shaft surface is fixedly connected to the first gear near the bottom end, the first rotating shaft top is fixedly connected to the crank, the second rotating shaft is rotatably connected to the right side of the top of the base near the front, the second rotating shaft surface is fixedly connected to the second gear near the bottom end, the second rotating shaft surface is fixedly connected to the first half gear near the top end, the third rotating shaft surface is rotatably connected to the right side of the top of the base near the back end, the third rotating shaft surface is fixedly connected to the third gear near the bottom end, the third rotating shaft surface is fixedly connected to the second half gear near the top end, the first fixing frame is fixedly connected to the right side of the top of the base, the first fixing frame top is rotatably connected to the fourth rotating shaft, and the fourth rotating shaft surface is fixedly connected to the fourth gear; The buffer assembly includes a first pulley, which is fixedly connected to the surface of the fourth rotating shaft near the top, and the fifth rotating shaft is rotatably connected to the left side of the first fixed frame near the right side of the top of the base, and the second pulley is fixedly connected to the surface of the fifth rotating shaft near the top, a belt is sleeved between the first pulley and the second pulley, and a fifth gear is fixedly connected to the surface of the fifth rotating shaft, and the right side of the top of the base is fixedly connected to a fixed frame near the fifth rotating shaft, and the top of the fixed frame is fixedly connected to a first sliding frame, and a first rack is slidably connected to the first sliding frame in the front and rear, and a slider is fixedly connected to the left side of the first rack, and the second fixed frame is fixedly connected to the left side of the slider, and the first guide rod is symmetrically fixedly connected to the front and rear sides of the second fixed frame, and the first guide rod surface is symmetrically slidably connected to the first hinged frame, and the first guide rod surface is sleeved with a first spring between the second fixed frame and the first hinged frame, and the first hinged rod is hinged in the first hinged frame, and the other end of the first hinged rod is hinged to the second hinged frame, and the left side of the second hinged frame is fixedly connected to a rectangular frame, and a probe is provided on the left side of the rectangular frame.

[0007] According to the above technical solution, the ammeter, power supply, switch, resistance rod and probe are connected in series with wires, the first gear is meshed with the second gear, the second gear is meshed with the third gear, and the first half gear and the second half gear are both meshed with the fourth gear.

[0008] According to the above technical solution, holes matching the second rotating shaft and the third rotating shaft are respectively opened on the front and rear sides of the top of the first fixed frame, and the second rotating shaft surface and the third rotating shaft surface respectively penetrate and are rotatably connected in the holes, the first rack is meshed with the fifth gear, and a groove matching the slider is opened on the left side of the first sliding frame, and the slider is slidably connected in the groove on the upper and lower sides.

[0009] According to the above technical solution, one end of the first spring is fixedly connected to the side of the second fixed frame close to the first hinged frame, and the other end of the first spring is fixedly connected to the side of the first hinged frame close to the inner side of the second fixed frame. A hole matching the probe is opened on the left side of the rectangular frame, and the surface of the probe passes through and is fixedly connected to the hole.

[0010] According to the above technical solution, the fixing mechanism includes a third fixing frame, the third fixing frame is fixedly connected to the top of the base, the third fixing frame is symmetrically fixedly connected with the first fixing plate on the left and right sides, a second guide rod is arranged on the top of the first fixing plate, the second guide rod is fixedly connected with the second fixing plate on the top, a clamping block is fixedly connected to the inner side of the second fixing plate, a pull plate is fixedly connected to the top of the clamping block, the bottom end of the second guide rod is fixedly connected to the limiting block, and a second spring is sleeved on the surface of the second guide rod between the first fixing plate and the limiting block.

[0011] According to the above technical solution, a hole matching the second guide rod is opened on the top of the first fixing plate, and the surface of the second guide rod passes through and is slidably connected to the hole. An arc groove matching the resistor rod is opened on the top of the third fixing frame and the bottom of the clamping block, and the resistor rod is located between the third fixing frame and the clamping block.

[0012] According to the above technical solution, the bottom end of the second spring is fixedly connected to the top of the limiting block, and the top end of the second spring is fixedly connected to the bottom of the first fixing plate.

[0013] The cam is connected with the second gear of the driving mechanism, and the cam is connected with the first gear of the driving mechanism, and the cam is connected with the first gear of the driving mechanism, and the cam is connected with the first gear of the driving mechanism.

[0014] According to the above technical solution, grooves matching the second rack and the third rack are respectively opened on the left and right sides of the top of the box body, and the second rack surface and the third rack surface respectively penetrate and are slidably connected to the corresponding grooves, the second rack and the third rack are both engaged with the sixth gear, and the other end of the L block is fixedly connected to the bottom of the pull plate.

[0015] According to the above technical solution, one end of the third spring is fixedly connected to the inner wall of the box close to the third hinged frame, the other end of the third spring is fixedly connected to the inner wall of the box close to the first hinged frame, and the top of the fourth hinged frame is fixedly connected to the bottom of the second rack.

[0016] Compared with the prior art, the beneficial effects achieved by the present invention are: 1. The ammeter with a manual current sensitivity detection device fixes the resistance rod by means of a rotating assembly. After fixing, the crank is turned to rotate the first shaft, thereby rotating the first gear. The rotation of the first gear drives the second gear to rotate, thereby rotating the second shaft. The second shaft drives the first half gear to rotate. The rotation of the second gear will cause the third gear to rotate. The third gear drives the third shaft to rotate, thereby rotating the second half gear. When the first half gear is meshed with the fourth gear, the second half gear is not meshed with the fourth gear. When the second half gear is meshed with the fourth gear, the first half gear is not meshed with the fourth gear. Therefore, the rotation of the crank will cause the fourth shaft to reciprocate.

[0017] 2. The ammeter with a manual current sensitivity detection device has a buffer component set up, so that the reciprocating rotation of the fourth shaft will cause the first pulley to reciprocate, and the first pulley causes the second pulley to reciprocate through the cooperation of the belt, so that the fifth shaft reciprocates, and the fifth shaft drives the fifth gear to reciprocate, so that the first rack moves back and forth, and thus drives the probe to move back and forth, and the reciprocating movement of the probe can change the distance between the connecting end of the wire and the resistor rod and the probe, thereby changing the distance that the current flows through the resistor rod, thereby changing the size of the power supply current, and the current value will be displayed through the current rheology, and the value of the ammeter can be observed more accurately through the reciprocating movement of the probe, and the probe will be buffered by the elastic force of the first spring when it moves back and forth on the surface of the resistor rod, so that it can move back and forth more smoothly on the surface of the resistor rod.

[0018] 3. The ammeter with a manual current sensitivity detection device, through the set fixing mechanism, pulls the pull plate upwards to make the pull plate and the clamping block move upwards, thereby driving the second guide rod to move upwards, and the second guide rod will drive the limit block to move upwards, thereby squeezing the second spring, placing the resistor rod in the arc groove at the top of the third fixing frame, and then releases the pull plate. At this time, the clamping block will move downwards by the elastic force of the second spring, so that the clamping block and the third fixing frame clamp and fix the resistor rod. This fixing method can replace the resistor rod that has been used for a long time, so the sensitivity detection of the ammeter can be more accurate.

[0019] 4. The ammeter with a manual current sensitivity detection device, through the provided pressing mechanism, when replacing the resistor rod, presses the pressing plate downward to move the second rack downward, and at the same time drives the fourth articulated frame to move downward, the downward movement of the fourth articulated frame will squeeze the second articulated rod, so that the two third articulated frames move toward each other on the surface of the third guide rod, squeezing the third spring, so that the sixth gear rotates counterclockwise, the counterclockwise rotation of the sixth gear will move the third gear upward, so that the L block moves upward, and the L block drives the pull plate to move upward, and then the resistor rod is replaced. After the resistor rod is replaced, release the pressing plate, at this time the second rack will move upward by the elastic force of the third spring, so that the sixth gear rotates clockwise, and the clockwise rotation of the sixth gear will move the third rack downward, so that the L block moves downward, and further moves the pull plate downward, this process can make it easier to replace the resistor rod, and the use efficiency is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings: Figure 1 It is a three-dimensional diagram of the structure of the present invention; Figure 2 It is a three-dimensional diagram of the rotating assembly of the structure of the present invention; Figure 3 It is a three-dimensional diagram of the structural buffer component of the present invention; Figure 4 It is a left side stereogram of the second fixing frame of the structure of the present invention; Figure 5 It is a three-dimensional diagram of the structural fixing mechanism of the present invention; Figure 6 A three-dimensional diagram of the second guide rod and the second spring of the structure of the present invention; Figure 7 It is a three-dimensional diagram of the pressing mechanism of the structure of the present invention; Figure 8 It is a front sectional stereoscopic view of the structural box of the present invention.

[0021] In the figure: 1, base; 2, ammeter; 3, power supply; 4, switch; 5, resistor rod; 6, test mechanism; 61, rotating assembly; 611, first shaft; 612, first gear; 613, crank; 614, second shaft; 615, second gear; 616, first half gear; 617, third shaft; 618, third gear; 619, second half gear; 6111, first fixed frame; 6112, fourth shaft; 6113, fourth gear; 62, buffer assembly; 621, first pulley; 622, fifth shaft; 623, second pulley; 624, belt; 625, fifth gear; 626, fixed frame; 627, first sliding frame; 628, first rack; 629, slider; 6211, second fixed frame; 621 2. The first guide rod; 6213. The first articulated frame; 6214. The first spring; 6215. The first articulated rod; 6216. The second articulated frame; 6217. The rectangular frame; 6218. The probe; 7. The fixing mechanism; 71. The third fixed frame; 72. The first fixed plate; 73. The second guide rod; 74. The second fixed plate; 75. The clamping block; 76. The pulling plate; 77. The limiting block; 78. The second spring; 8. The pressing mechanism; 81. The box body; 82. The second sliding frame; 83. The second rack; 84. The pressing plate; 85. The third sliding frame; 86. The third rack; 87. The L block; 88. The sixth rotating shaft; 89. The sixth gear; 811. The third guide rod; 812. The third articulated frame; 813. The third spring; 814. The second articulated rod; 815. The fourth articulated frame. DETAILED DESCRIPTION

[0022] 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.

[0023] The present invention provides the following technical solutions: Embodiment 1

[0024] Combination Figures 1 to 4 , an ammeter 2 with a manual current sensitivity detection device, comprising a base 1, an ammeter 2, a power supply 3, and a switch 4. A testing mechanism 6 is arranged on the right side of the top of the base 1, a fixing mechanism 7 is arranged on the top of the base 1, a resistor rod 5 is arranged in the fixing mechanism 7, and a pressing mechanism 8 is arranged on the top of the base 1 near the left side of the fixing mechanism 7; The testing mechanism 6 includes a rotating assembly 61 and a buffer assembly 62. The rotating assembly 61 is arranged on the top right side of the base 1, and the buffer assembly 62 is arranged inside the rotating assembly 61. The rotating assembly 61 includes a first rotating shaft 611, which is rotatably connected to the right side of the top of the base 1, a first gear 612 is fixedly connected to the surface of the first rotating shaft 611 near the bottom, a crank 613 is fixedly connected to the top of the first rotating shaft 611, a second rotating shaft 614 is rotatably connected to the right side of the top of the base 1 near the front, a second gear 615 is fixedly connected to the surface of the second rotating shaft 614 near the bottom, a first half gear 616 is fixedly connected to the surface of the second rotating shaft 614 near the top, a third rotating shaft 617 is rotatably connected to the right side of the top of the base 1 near the back, a third gear 618 is fixedly connected to the surface of the third rotating shaft 617 near the bottom, and a second half gear 619 is fixedly connected to the surface of the third rotating shaft 617 near the top, a first fixing frame 6111 is fixedly connected to the right side of the top of the base 1, a fourth rotating shaft 6112 is rotatably connected to the top of the first fixing frame 6111, and a fourth gear 6113 is fixedly connected to the surface of the fourth rotating shaft 6112; The buffer assembly 62 includes a first pulley 621, which is fixedly connected to the surface of the fourth rotating shaft 6112 near the top, and the fifth rotating shaft 622 is rotatably connected to the left side of the first fixed frame 6111 near the top right side of the base 1, and the second pulley 623 is fixedly connected to the surface of the fifth rotating shaft 622 near the top, and a belt 624 is sleeved between the first pulley 621 and the second pulley 623, and a fifth gear 625 is fixedly connected to the surface of the fifth rotating shaft 622, and a fixed frame 626 is fixedly connected to the top right side of the base 1 near the fifth rotating shaft 622, and a first sliding frame 627 is fixedly connected to the top of the fixed frame 626, and a first rack 628 is slidably connected to the first sliding frame 628, and the first rack 628 is slidably connected to the first sliding frame 628. A slider 629 is fixedly connected to the left side of 8, a second fixed frame 6211 is fixedly connected to the left side of the slider 629, a first guide rod 6212 is fixedly connected to the second fixed frame 6211 on both sides symmetrically up and down, a first hinged frame 6213 is symmetrically slidably connected to the surface of the first guide rod 6212, a first spring 6214 is sleeved on the surface of the first guide rod 6212 between the second fixed frame 6211 and the first hinged frame 6213, a first hinged rod 6215 is hinged in the first hinged frame 6213, the other end of the first hinged rod 6215 is hinged to the second hinged frame 6216, a rectangular frame 6217 is fixedly connected to the left side of the second hinged frame 6216, and a probe 6218 is arranged on the left side of the rectangular frame 6217.

[0025] Furthermore, the ammeter 2, power supply 3, switch 4, resistance rod 5 and probe 6218 are connected in series with wires, the first gear 612 is meshed with the second gear 615, the second gear 615 is meshed with the third gear 618, and the first half gear 616 and the second half gear 619 are both meshed with the fourth gear 6113.

[0026] Furthermore, holes matching the second rotating shaft 614 and the third rotating shaft 617 are respectively provided on the front and rear sides of the top of the first fixed frame 6111, and the surfaces of the second rotating shaft 614 and the third rotating shaft are respectively penetrated and rotatably connected in the holes, the first rack 628 is engaged with the fifth gear 625, and a groove matching the slider 629 is provided on the left side of the first sliding frame 627, and the slider 629 is slidably connected in the groove on the upper and lower sides.

[0027] Furthermore, one end of the first spring 6214 is fixedly connected to the second fixed frame 6211 on one side close to the first hinged frame 6213, and the other end of the first spring 6214 is fixedly connected to the first hinged frame 6213 on the inner side close to the second fixed frame 6211. A hole matching the probe 6218 is opened on the left side of the rectangular frame 6217, and the surface of the probe 6218 passes through and is fixedly connected to the hole. Embodiment 2

[0028] See also Figure 5-6 , and on the basis of the first embodiment, a fixing mechanism 7 is further obtained.

[0029] Furthermore, the fixing mechanism 7 includes a third fixing frame 71, which is fixedly connected to the top of the base 1, and the third fixing frame 71 is symmetrically fixedly connected to the first fixing plate 72 on the left and right sides and front and back, a second guide rod 73 is arranged on the top of the first fixing plate 72, and the top of the second guide rod 73 is fixedly connected to the second fixing plate 74, a clamping block 75 is fixedly connected to the inner side of the second fixing plate 74, and a pulling plate 76 is fixedly connected to the top of the clamping block 75, and the bottom end of the second guide rod 73 is fixedly connected to the limiting block 77, and a second spring 78 is sleeved on the surface of the second guide rod 73 between the first fixing plate 72 and the limiting block 77.

[0030] Furthermore, a hole matching the second guide rod 73 is opened on the top of the first fixed plate 72, and the surface of the second guide rod 73 passes through and is slidably connected in the hole. An arc groove matching the resistor rod 5 is opened on the top of the third fixed frame 71 and the bottom of the clamping block 75, and the resistor rod 5 is located between the third fixed frame 71 and the clamping block 75.

[0031] Furthermore, the bottom end of the second spring 78 is fixedly connected to the top of the limiting block 77 , and the top end of the second spring 78 is fixedly connected to the bottom of the first fixing plate 72 . Embodiment 3

[0032] See also Figure 7-8 , and on the basis of the first embodiment, a pressing mechanism 8 is further obtained.

[0033] Further, the pressing mechanism 8 includes a box body 81, which is fixedly connected to the top of the base 1 near the left side of the third fixed frame 71, a second sliding frame 82 is fixedly connected to the left side of the inner wall of the box body 81, a second rack 83 is slidably connected up and down in the second sliding frame 82, a pressing plate 84 is fixedly connected to the top of the second rack 83, a third sliding frame 85 is fixedly connected to the right side of the inner wall of the box body 81, a third rack 86 is slidably connected up and down in the third sliding frame 85, an L block 87 is fixedly connected to the top of the right side of the third rack 86, and the front and rear inner walls of the box body 81 are connected to the third sliding frame 85. A sixth rotating shaft 88 is rotatably connected to the side near the top, and a sixth gear 89 is fixedly connected to the surface of the sixth rotating shaft 88. A third guide rod 811 is fixedly connected to the front and rear sides of the inner wall of the box body 81 near the bottom of the left side. The surface of the third guide rod 811 is symmetrically slidably connected to the third articulated frame 812. A third spring 813 is sleeved on the surface of the third guide rod 811 between the inner wall of the box body 81 and the third articulated frame 812. A second articulated rod 814 is hinged in the third articulated frame 812, and the other end of the second articulated rod 814 is hinged to a fourth articulated frame 815.

[0034] Furthermore, grooves matching the second rack 83 and the third rack 86 are respectively opened on the left and right sides of the top of the box body 81, and the surfaces of the second rack 83 and the third rack 86 respectively penetrate and are slidably connected in the corresponding grooves, the second rack 83 and the third rack 86 are both engaged with the sixth gear 89, and the other end of the L block 87 is fixedly connected to the bottom of the pull plate 76.

[0035] Furthermore, one end of the third spring 813 is fixedly connected to the inner wall of the box body 81 close to the third hinged frame 812, the other end of the third spring 813 is fixedly connected to the inner wall of the box body 81 close to the first hinged frame 6213, and the top of the fourth hinged frame 815 is fixedly connected to the bottom of the second rack 83.

[0036] In actual operation, when the device is used, the resistor rod 5 is fixed, and after being fixed, the crank 613 is rotated to rotate the first shaft 611, thereby rotating the first gear 612, and the rotation of the first gear 612 drives the second gear 615 to rotate, thereby rotating the second shaft 614, and the second shaft 614 drives the first half gear 616 to rotate, and the second gear 615 rotates while the third gear 618 rotates, and the third gear 618 drives the third shaft 617 to rotate, thereby rotating the second half gear 619, when the first half gear 616 is meshed with the fourth gear 6113, the second half gear 619 is not meshed with the fourth gear 6113, and when the second half gear 619 is meshed with the fourth gear 6113, the first half gear 616 is not meshed with the fourth gear 6113, so the rotation of the crank 613 causes the fourth shaft 6112 to reciprocate; The reciprocating rotation of the fourth rotating shaft 6112 causes the first pulley 621 to reciprocate, and the first pulley 621 causes the second pulley 623 to reciprocate through the cooperation of the belt 624, thereby causing the fifth rotating shaft 622 to reciprocate, and the fifth rotating shaft 622 drives the fifth gear 625 to reciprocate, thereby causing the first rack 628 to reciprocate back and forth, and thus driving the probe 6218 to reciprocate back and forth, and the reciprocating movement of the probe 6218 can change the distance between the connecting end of the wire and the resistor rod 5 and the probe 6218, thereby changing the distance that the current flows through the resistor rod 5, thereby changing the magnitude of the current of the power supply 3, and the value of the current will be displayed through the current rheology, and the value of the ammeter 2 can be observed more accurately through the reciprocating movement of the probe 6218, and when the probe 6218 reciprocates back and forth on the surface of the resistor rod 5, it will be buffered by the elastic force of the first spring 6214, and can reciprocate back and forth more smoothly on the surface of the resistor rod 5; Pull the pull plate 76 upward to move the pull plate 76 and the clamping block 75 upward, thereby driving the second guide rod 73 upward, and the second guide rod 73 will drive the limit block 77 upward, thereby squeezing the second spring 78, and placing the resistor rod 5 in the arc groove at the top of the third fixing frame 71, and then release the pull plate 76. At this time, the clamping block 75 will move downward by the elastic force of the second spring 78, so that the clamping block 75 and the third fixing frame 71 clamp and fix the resistor rod 5. This fixing method can replace the resistor rod 5 that has been used for a long time, so the sensitivity detection of the ammeter 2 can be more accurate; When the resistor rod 5 is replaced, the pressing plate 84 is pressed downward to make the second rack 83 move downward, and at the same time, the fourth hinge frame 815 moves downward. The downward movement of the fourth hinge frame 815 will squeeze the second hinge rod 814, so that the two third hinge frames 812 move toward each other on the surface of the third guide rod 811, squeezing the third spring 813, so that the sixth gear 89 rotates counterclockwise, and the counterclockwise rotation of the sixth gear 89 will make the third gear 618 move upward, so that the L block 87 moves upward, and the L block 87 will drive the pull plate 76 to move upward, and then the resistor rod 5 is replaced. After the resistor rod 5 is replaced, the pressing plate 84 is released. At this time, the second rack 83 will move upward by the elastic force of the third spring 813, so that the sixth gear 89 rotates clockwise, and the clockwise rotation of the sixth gear 89 will make the third rack 86 move downward, so that the L block 87 moves downward, and further the pull plate 76 moves downward. This process can make it easier to replace the resistor rod 5, and the use efficiency is high.

[0037] 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.

[0038] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An ammeter with a manual current sensitivity detection device, comprising a base (1), an ammeter (2), a power supply (3), and a switch (4), characterized in that: A testing mechanism (6) is provided on the right side of the top of the base (1), a fixing mechanism (7) is provided on the top of the base (1), a resistance rod (5) is provided inside the fixing mechanism (7), and a pressing mechanism (8) is provided on the top of the base (1) near the left side of the fixing mechanism (7); The testing mechanism (6) comprises a rotating assembly (61) and a buffer assembly (62), wherein the rotating assembly (61) is arranged on the right side of the top of the base (1), and the buffer assembly (62) is arranged inside the rotating assembly (61); The rotating assembly (61) comprises a first rotating shaft (611), the first rotating shaft (611) is rotatably connected to the right side of the top of the base (1), a first gear (612) is fixedly connected to the surface of the first rotating shaft (611) near the bottom end, a crank (613) is fixedly connected to the top end of the first rotating shaft (611), a second rotating shaft (614) is rotatably connected to the right side of the top of the base (1) near the front end, a second gear (615) is fixedly connected to the surface of the second rotating shaft (614) near the bottom end, and a first gear (616) is fixedly connected to the surface of the second rotating shaft (614) near the top end. A half gear (616), a third rotating shaft (617) is rotatably connected to the right side of the top of the base (1) near the back, a third gear (618) is fixedly connected to the surface of the third rotating shaft (617) near the bottom, a second half gear (619) is fixedly connected to the surface of the third rotating shaft (617) near the top, a first fixing frame (6111) is fixedly connected to the right side of the top of the base (1), a fourth rotating shaft (6112) is rotatably connected to the top of the first fixing frame (6111), and a fourth gear (6113) is fixedly connected to the surface of the fourth rotating shaft (6112); The buffer assembly (62) comprises a first pulley (621), the first pulley (621) being fixedly connected to the surface of the fourth rotating shaft (6112) near the top; a fifth rotating shaft (622) is rotatably connected to the left side of the first fixed frame (6111) near the top right side of the base (1); a second pulley (623) is fixedly connected to the surface of the fifth rotating shaft (622) near the top; a belt (624) is sleeved between the first pulley (621) and the second pulley (623); a fifth gear (625) is fixedly connected to the surface of the fifth rotating shaft (622); a fixed frame (626) is fixedly connected to the top right side of the base (1) near the fifth rotating shaft (622); a first sliding frame (627) is fixedly connected to the top of the fixed frame (626); a first rack (628) is slidably connected to the first sliding frame in a forward and backward manner; the first rack A slider (629) is fixedly connected to the left side of (628), and a second fixed frame (6211) is fixedly connected to the left side of the slider (629), and a first guide rod (6212) is fixedly connected to the second fixed frame (6211) on both sides of the front and rear sides, and a first hinged frame (6213) is symmetrically slidably connected to the surface of the first guide rod (6212) in the front and rear directions. A first spring (6214) is sleeved on the surface of the first guide rod (6212) between the second fixed frame (6211) and the first hinged frame (6213), and a first hinged rod (6215) is hinged in the first hinged frame (6213), and the other end of the first hinged rod (6215) is hinged to the second hinged frame (6216), and a rectangular frame (6217) is fixedly connected to the left side of the second hinged frame (6216), and a probe (6218) is arranged on the left side of the rectangular frame (6217).

2. An ammeter with a manual current sensitivity detection device according to claim 1, characterized in that: The ammeter (2), power supply (3), switch (4), resistance rod (5) and probe (6218) are connected in series by wires; the first gear (612) is meshed with the second gear (615); the second gear (615) is meshed with the third gear (618); and the first half gear (616) and the second half gear (619) are both meshed with the fourth gear (6113).

3. An ammeter with a manual current sensitivity detection device according to claim 2, characterized in that: The first fixed frame (6111) has holes on the front and rear sides of the top that match the second rotating shaft (614) and the third rotating shaft (617), and the second rotating shaft (614) and the third rotating shaft (617) are respectively penetrated and rotatably connected in the holes. The first rack (628) is meshed with the fifth gear (625). The first sliding frame (627) has a groove on the left side that matches the slider (629), and the slider (629) is slidably connected in the groove at the upper and lower sides.

4. An ammeter with a manual current sensitivity detection device according to claim 3, characterized in that: One end of the first spring (6214) is fixedly connected to a side of the second fixing frame (6211) close to the first hinged frame (6213), and the other end of the first spring (6214) is fixedly connected to a side of the first hinged frame (6213) close to the inner side of the second fixing frame (6211). A hole matching the probe (6218) is opened on the left side of the rectangular frame (6217), and the surface of the probe (6218) passes through and is fixedly connected to the hole.

5. An ammeter with a manual current sensitivity detection device according to claim 4, characterized in that: The fixing mechanism (7) comprises a third fixing frame (71), the third fixing frame (71) is fixedly connected to the top of the base (1), the left and right sides of the third fixing frame (71) are symmetrically fixedly connected to the first fixing plate (72), the top of the first fixing plate (72) is provided with a second guide rod (73), the top of the second guide rod (73) is fixedly connected to the second fixing plate (74), the inner side of the second fixing plate (74) is fixedly connected to a clamping block (75), the top of the clamping block (75) is fixedly connected to a pulling plate (76), the bottom end of the second guide rod (73) is fixedly connected to a limiting block (77), and the surface of the second guide rod (73) is sleeved with a second spring (78) between the first fixing plate (72) and the limiting block (77).

6. An ammeter with a manual current sensitivity detection device according to claim 5, characterized in that: A hole matching the second guide rod (73) is formed at the top of the first fixing plate (72), and the surface of the second guide rod (73) passes through and is slidably connected to the hole. An arc groove matching the resistance rod (5) is formed at the top of the third fixing frame (71) and the bottom of the clamping block (75), and the resistance rod (5) is located between the third fixing frame (71) and the clamping block (75).

7. An ammeter with a manual current sensitivity detection device according to claim 6, characterized in that: The bottom end of the second spring (78) is fixedly connected to the top of the limiting block (77), and the top end of the second spring (78) is fixedly connected to the bottom of the first fixing plate (72).

8. An ammeter with a manual current sensitivity detection device according to claim 7, characterized in that: The pressing mechanism (8) comprises a box body (81), the box body (81) being fixedly connected to the top of the base (1) near the left side of the third fixed frame (71), a second sliding frame (82) being fixedly connected to the left side of the inner wall of the box body (81), a second rack (83) being slidably connected up and down in the second sliding frame (82), a pressing plate (84) being fixedly connected to the top of the second rack (83), a third sliding frame (85) being fixedly connected to the right side of the inner wall of the box body (81), a third rack (86) being slidably connected up and down in the third sliding frame (85), an L block (87) being fixedly connected to the top of the right side of the third rack (86), and the box body (81) having a plurality of inner walls. A sixth rotating shaft (88) is rotatably connected to the front and rear sides of the wall near the top, and a sixth gear (89) is fixedly connected to the surface of the sixth rotating shaft (88). A third guide rod (811) is fixedly connected to the front and rear sides of the inner wall of the box body (81) near the left bottom. A third hinge frame (812) is symmetrically slidably connected to the surface of the third guide rod (811) front and back. A third spring (813) is sleeved on the surface of the third guide rod (811) between the inner wall of the box body (81) and the third hinge frame (812). A second hinge rod (814) is hinged inside the third hinge frame (812), and the other end of the second hinge rod (814) is hinged to a fourth hinge frame (815).

9. An ammeter with a manual current sensitivity detection device according to claim 8, characterized in that: The left and right sides of the top of the box body (81) are respectively provided with grooves matching the second rack (83) and the third rack (86), and the surfaces of the second rack (83) and the third rack (86) respectively penetrate and are slidably connected in the corresponding grooves, the second rack (83) and the third rack (86) are both meshed with the sixth gear (89), and the other end of the L block (87) is fixedly connected to the bottom of the pull plate (76).

10. An ammeter with a manual current sensitivity detection device according to claim 9, characterized in that: One end of the third spring (813) is fixedly connected to a side of the inner wall of the box body (81) close to the third hinged frame (812), the other end of the third spring (813) is fixedly connected to a side of the inner wall of the box body (81) close to the first hinged frame (6213), and the top of the fourth hinged frame (815) is fixedly connected to the bottom of the second rack (83).

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