Fuse test device based on power amplification

Abstract

The invention relates to the technical field of fuse testing, and discloses a fuse testing device based on power amplification, which comprises a machine body, a display and a workbench are fixed on the front surface of the machine body, a current adjusting knob is arranged on the machine body, and a power amplifier and an intelligent mutual inductor are fixed on the back surface of the machine body. A fixing plate is fixed to the top of the workbench, and a copper block is fixed to the top of the fixing plate. The fuse test device based on power amplification is provided with a copper rod, a transmission spring, an insulating plate, a transmission rod, a stop block, a connecting spring, an electrode plate, a sealing cavity, a piston plate, a reset spring, a connecting rod, a limiting rod, a hinge rod, a rotating sleeve, a baffle plate, a fixing sleeve and a spring in order to prevent a fuse from being damaged due to overlarge current. And the copper rod moves upwards to be far away from the copper block, so that the copper rod is not electrified, and the situation that the fuse is damaged and the test of the fuse is influenced due to overlarge current is prevented.

Description

Technical Field

[0001] The invention relates to the technical field of fuse testing, and in particular to a fuse testing device based on power amplification. Background Art

[0002] In power systems and electronic circuits, fuses are one of the important protection components. Their function is to cut off the power supply when the circuit is overloaded or short-circuited to protect the circuit equipment from damage. Therefore, the performance of the fuse directly affects the safety and reliability of the entire system. In order to ensure that the fuse can play a role at critical moments, it needs to be strictly tested and verified.

[0003] When the fuse test device is conducting a power-on test on a fuse, it is necessary to clamp the pins on both sides of the fuse, and then pass current to conduct the power-on test. If the current passed is too large, the fuse may be damaged due to the long-term high current passing through the fuse pins, which will affect the fuse test, and affect the quality of the fuse product and its normal use in the future. Summary of the invention

[0004] The object of the present invention is to provide a fuse test device based on power amplification to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a fuse test device based on power amplification, comprising a body, a display and a workbench are fixed on the front of the body, a current adjustment knob is arranged on the body, the current of the fuse test is connected through the current adjustment knob, a power amplifier and an intelligent mutual inductor are fixed on the back of the body, a fixing plate is fixed on the top of the workbench, a copper block is fixed on the top of the fixing plate, the copper block and the body are electrically connected through a cable, a clamping assembly is arranged on the copper block, a positioning assembly for preventing the fuse from falling is arranged on the clamping assembly, and a shielding assembly for protecting the staff is arranged on the workbench; wherein the clamping assembly comprises a copper rod, a transmission spring, an insulating plate, a transmission rod, a block, a connecting spring, an electrode sheet, a sealing chamber, a piston plate, a reset spring, A connecting rod, a hinged rod, a baffle, a limit rod, a rotating sleeve, a fixed sleeve and a spring. The setting of the spring can achieve the effect of resetting the rotating sleeve. The copper rod is slidably installed on the inner side of the copper block. An insulating plate is slidably installed on the inner side of the copper block. The insulating plate is slidably installed on the inner wall of the copper block. A transmission spring is fixed to the bottom of the insulating plate. The bottom of the transmission spring is fixed to the inner side of the copper block. A sealed cavity is opened on the copper rod. A piston plate is slidably installed on the inner wall of the sealed cavity. The sealed cavity at the bottom of the piston plate is filled with carbon dioxide gas. When the carbon dioxide gas is heated, it will expand, causing the piston plate to move upward. A connecting rod is fixed to the top of the piston plate. The side wall of the copper rod passes through the limit rod, and the penetration is slidably connected. The top of the connecting rod is hinged with a hinged rod, and the end of the hinged rod away from the connecting rod is hinged to the end point of the limit rod.

[0006] According to the above technical solution, a transmission rod passes through the top side wall of the copper rod, and the penetration point is slidably connected, a stopper is fixed to one end of the transmission rod, and an electrode sheet is fixed to the other end of the transmission rod, the bottom of the electrode sheet is in contact with the inner side of the top of the copper rod, and a connecting spring is fixed to the side wall of the stopper, and the side of the connecting spring away from the stopper is fixed to the outer wall of the copper rod. By arranging the electrode sheet, the pins of the fuse can be clamped and positioned.

[0007] According to the above technical solution, a rotating sleeve is rotatably installed on the top of the copper block, a fixed sleeve is fixed on the top of the copper block, a mainspring is fixed on the outer wall of the rotating sleeve, the side of the mainspring away from the rotating sleeve is fixed to the inner wall of the fixed sleeve, a baffle is fixed on the outer wall of the rotating sleeve, the bottom of the baffle is in contact with the outer wall of the limiting rod, a reset spring is fixed on the top of the piston plate, and the top of the reset spring is fixed on the inner wall of the sealing chamber. By setting the reset spring, the piston plate can be reset.

[0008] According to the above technical solution, the positioning assembly includes a connecting rod, a slider, a fixed rod, a connecting plate, a spring plate, a long rod, a support plate and a slide groove. The connecting rod is fixed to the outer wall of the copper rod, and the slider is slidably installed on the outer wall of the connecting rod. The fixed rod is fixed on the side of the slider away from the connecting rod, and the connecting plate is fixed on the end of the fixed rod away from the slider. The side wall of the connecting plate is fixed with a spring plate, and the side wall of the spring plate is fixedly connected to the outer wall of the electrode plate. The outer wall of the slider is fixed with a long rod.

[0009] According to the above technical solution, a support plate is fixed on the top of the fixed plate, a sliding groove is opened on the side wall of the support plate, and the inner wall of the sliding groove is in contact with the outer wall of the long rod.

[0010] According to the above technical solution, the shielding assembly includes a connecting seat, a push rod, a return spring, a magnetic sheet, a round block, a hinge seat, a movable rod, a movable plate, a hinge block, a rotating block, a rotating shaft, an extrusion rod and a protective plate; the connecting seat is fixed on the top of the workbench, and the side wall of the connecting seat is fixed with a hinge block, and the inner side of the hinge block is rotatably installed with a rotating shaft, and the rotating shaft passes through the side wall of the hinge block, and is rotatably connected at the penetration point, and the outer wall of the rotating shaft is fixed with a protective plate.

[0011] According to the above technical solution, a push rod passes through the connecting seat and is slidably connected at the penetration point. A round block is fixed to one end of the push rod, and a magnetic sheet is fixed to the other end of the push rod. A return spring is fixed to the side wall of the round block, and the side of the return spring away from the round block is fixed to the side wall of the connecting seat. A movable plate is slidably installed on the side wall of the connecting seat, and a hinge seat is fixed to the side wall of the round block. A movable rod is hinged on the hinge seat, and the end of the movable rod away from the hinge seat is hinged to the top of the movable plate.

[0012] According to the above technical solution, a rotating block is fixed to the side wall of the rotating shaft, and an extrusion rod is fixed to the side wall of the movable plate, and the extrusion rod passes through the through hole of the rotating block, and the through hole is fitted. When the extrusion rod moves downward in the through hole of the rotating block, the extrusion rod squeezes the rotating block to reverse, thereby driving the rotating shaft to reverse and causing the protective plate to reverse.

[0013] Compared with the prior art, the present invention provides a fuse test device based on power amplification, which has the following beneficial effects: 1. In order to prevent the fuse from being damaged by excessive current, the power amplification-based fuse test device is equipped with a copper rod, a transmission spring, an insulating plate, a transmission rod, a block, a connecting spring, an electrode sheet, a sealing chamber, a piston plate, a reset spring, a connecting rod, a limit rod, a hinged rod, a rotating sleeve, a baffle, a fixed sleeve and a spring. When the current is adjusted too large, the copper rod is moved upward away from the copper block, and then the copper rod is not energized, so as to prevent the current from being too large, causing damage to the fuse and affecting the test of the fuse.

[0014] 2. In order to prevent the fuse from falling when moving upward, the power amplification-based fuse test device is equipped with a connecting rod, a slider, a fixing rod, a connecting piece, a spring piece, a long rod, a supporting plate and a slide groove. When the copper rod drives the fuse to move upward, the spring piece squeezes the electrode piece, so that the electrode piece applies a squeezing force to the pin of the fuse, thereby preventing the transmission spring from shaking when driving the copper rod to move upward, causing the fuse to fall and be damaged.

[0015] 3. In order to prevent the staff from getting an electric shock when taking the fuse, the power amplification-based fuse test device is equipped with a connecting seat, a push rod, a magnetic sheet, a round block, a return spring, a hinge seat, a movable plate, a hinge block, a rotating shaft, a protective plate, a rotating block, an extrusion rod and a movable rod. When the copper rod is removed from the copper block and still carries current, the protective plate will flip over and block the front of the workbench, thereby preventing the staff from taking the fuse. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a structural schematic diagram of the present invention as a whole; Figure 3 It is a partial structural schematic diagram of the workbench of the present invention; Figure 4 It is a schematic diagram of the structure of the clamping assembly of the present invention; Figure 5 It is a schematic cross-sectional view of the structure of the clamping assembly of the present invention; Figure 6 It is a partial structural schematic diagram of the clamping assembly and the positioning assembly of the present invention; Figure 7 It is a partial structural schematic diagram of the clamping assembly of the present invention; Figure 8 It is a schematic diagram of the structure of the support plate of the present invention; Fig. 9 This is a schematic diagram of the structure of the shielding component of the present invention; Fig.10 It is a partial structural schematic diagram of the shielding component of the present invention.

[0017] In the figure: 1, machine body; 2, current adjustment knob; 3, display; 4, workbench; 5, power amplifier; 6, intelligent mutual inductor; 7, fixing plate; 8, copper block; 9, cable; 10, clamping assembly; 1001, copper rod; 1002, transmission spring; 1003, insulating plate; 1004, transmission rod; 1005, stopper; 1006, connecting spring; 1007, electrode sheet; 1008, sealing chamber; 1009, piston plate; 1010, reset spring; 1011, connecting rod; 1012, limit rod; 1013, hinged rod; 1014, rotating sleeve; 1015, baffle; 1016, fixed Fixed sleeve; 1017, clockwork; 11, positioning assembly; 1101, connecting rod; 1102, slider; 1103, fixed rod; 1104, connecting plate; 1105, spring sheet; 1106, long rod; 1107, support plate; 1108, slide groove; 12, shielding assembly; 1201, connecting seat; 1202, push rod; 1203, magnetic sheet; 1204, round block; 1205, return spring; 1206, hinge seat; 1207, moving plate; 1208, hinge block; 1209, rotating shaft; 1210, protective plate; 1211, rotating block; 1212, extrusion rod; 1213, movable rod. DETAILED DESCRIPTION

[0018] 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.

[0019] See also Figure 1-Figure 7An embodiment of the present invention is: a fuse test device based on power amplification, comprising a body 1, a display 3 is fixed on the front of the upper half of the body 1, an industrial computer is fixed on the front of the lower half of the body 1, a current adjustment knob 2 is fixed on the front of the body 1, a workbench 4 is fixed on the front of the body 1, a power amplifier 5 and an intelligent mutual inductor 6 are fixed on the back of the workbench 4, a fixing plate 7 is fixed on the top of the workbench 4, a copper block 8 is fixed on the top of the fixing plate 7, the copper block 8 is electrically connected to the body 1 through a cable 9, and a clamping assembly 10 is arranged on the copper block 8, wherein the clamping assembly 10 comprises: a copper rod 1001, an insulating plate 1003, a transmission spring 1002, a transmission rod 1004, Block 1005, connecting spring 1006, electrode sheet 1007, sealing chamber 1008, piston plate 1009, reset spring 1010, connecting rod 1011, hinged rod 1013, limit rod 1012, fixed sleeve 1016, rotating sleeve 1014, clockwork 1017 and baffle 1015; copper rod 1001 is fitted on the inner side of the top of copper block 8, transmission spring 1002 is fixed on the inner side of copper block 8, insulation plate 1003 is fixed on the top of transmission spring 1002, the outer wall of insulation plate 1003 is fitted on the inner side of copper block 8, the top of insulation plate 1003 is fixedly connected to the bottom of copper rod 1001, transmission rod 1004 runs through the top side wall of copper rod 1001, and transmission rod 1004 is slidably connected with the penetration of the copper rod 1001, a stopper 1005 is fixed at one end of the transmission rod 1004, an electrode sheet 1007 is fixed at the other end of the transmission rod 1004, the bottom of the electrode sheet 1007 is in contact with the inner side of the top of the copper rod 1001, two groups of electrode sheets 1007 are arranged on the copper rod 1001, and the two groups of electrode sheets 1007 are symmetrically arranged with the center line of the copper rod 1001 in the vertical direction as the symmetry axis, a sealed cavity 1008 is opened on the inner side of the copper rod 1001, a piston plate 1009 is slidably installed on the inner wall of the sealed cavity 1008, a reset spring 1010 is fixed on the top of the piston plate 1009, and the top of the reset spring 1010 is fixed to the inner wall of the sealed cavity 1008 A connecting rod 1011 is fixed to the top of the piston plate 1009, and a hinged rod 1013 is hinged to the top of the connecting rod 1011. A limiting rod 1012 is hinged at one end of the hinged rod 1013 away from the connecting rod 1011. The limiting rod 1012 penetrates the side wall of the copper rod 1001 and is slidably connected at the penetration point. A rotating sleeve 1014 is rotatably installed on the top of the copper block 8, and a baffle 1015 is fixed to the outer wall of the rotating sleeve 1014. The top of the baffle 1015 is in contact with the outer wall of the limiting rod 1012. A fixed sleeve 1016 is fixed to the top of the copper block 8, and a spring 1017 is fixed to the outer wall of the rotating sleeve 1014. The side of the spring 1017 away from the rotating sleeve 1014 is fixed to the inner wall of the fixed sleeve 1016.

[0020] The power amplifier 5 is responsible for providing an adjustable analog current to test the fuse. Modern power electronics technology, such as transistors, MOSFETs or IGBTs, is used to achieve efficient and accurate current amplification. Since the large current connection time of the large current fuse test is relatively short, the power amplifier 5 of this device is composed of many class B amplifiers in parallel. For example, if a single power amplifier element outputs a current of 10A, 10 power amplifier elements are used for parallel output, and the maximum output current is 100A. The current output by the power amplifier 5 is amplified by the intelligent mutual inductor 6, and the current waveform is filtered at the same time.

[0021] The intelligent mutual inductor 6 utilizes the mutual inductor principle. Traditional mutual inductors often convert large current into small current. However, we use small current as input and large current as output current to convert small current into large current. Taking into account the leakage magnetic field and electromagnetic loss, we use high-density annular silicon steel sheets, use zero flux monitoring feedback, change the number of winding turns, realize electromagnetic compensation, and ensure high-precision large current input.

[0022] An industrial computer is used as a controller to set and adjust test parameters (such as output current, duration, etc.), and to monitor the current and voltage changes during the test in real time to ensure the accuracy and repeatability of the test.

[0023] By setting the display 3, the operator can intuitively and conveniently set the test parameters and monitor the test status, thereby enhancing the human-computer interaction experience.

[0024] By filling the sealed cavity 1008 at the bottom of the piston plate 1009 with carbon dioxide gas, when the current passing through the copper rod 1001 is too large, the heat of the copper rod 1001 body will increase, causing the carbon dioxide gas to expand and the piston plate 1009 to move upward.

[0025] A baffle 1015 is fixed to the outer wall of the rotating sleeve 1014 , and the bottom of the baffle 1015 is in contact with the outer wall of the limiting rod 1012 . By arranging the cooperation between the baffle 1015 and the limiting rod 1012 , the copper rod 1001 is fixed in the copper block 8 .

[0026] A connecting spring 1006 is fixed to the side wall of the block 1005, and the side of the connecting spring 1006 away from the block 1005 is fixed to the outer wall of the copper rod 1001. When the pin of the fuse is placed between the two groups of electrode sheets 1007, an extrusion force is applied by the connecting spring 1006, so that the pin of the fuse can be stably clamped between the two groups of electrode sheets 1007.

[0027] When the present embodiment is working: when it is necessary to conduct a power-on test on the fuse pins in the two groups of electrode sheets 1007, the body 1 is started, and the current passes through the cable 9, and the current is transmitted to the copper rod 1001 and the electrode sheet 1007, and then the power-on test can be conducted, and the output current is adjusted by turning the current adjustment knob 2. When the output current is too large, the temperature on the copper rod 1001 will rise accordingly. When the temperature is too high, the carbon dioxide gas in the sealed cavity 1008 will expand, and the piston plate 1009 will be squeezed to move upward, so that the reset spring 1010 is compressed, and when the piston plate 1009 moves upward, it can drive the connecting rod 1011 to move upward, and the hinged rod 1 013 rotates at the hinge, so that the hinge rod 1013 squeezes the limiting rod 1012 to move outward from the copper rod 1001, driving the limiting rod 1012 to move away from the bottom of the baffle 1015, and releasing the limit on the copper rod 1001. Because the transmission spring 1002 is originally in a compressed state, it drives the insulating plate 1003 to move upward, so that the insulating plate 1003 drives the copper rod 1001 to move out from the inner side of the copper block 8, so that the outer wall of the copper rod 1001 does not contact the inner wall of the copper block 8, so that the current on the copper block 8 will not continue to be transmitted to the copper rod 1001, preventing the continuous current transmission from possibly causing the fuse to be subjected to excessive current, causing damage, affecting the test results of the fuse, and when the copper rod 100 When 1 moves upward and leaves the copper block 8, because the copper rod 1001 does not output current, the temperature of the copper rod 1001 will gradually decrease. Due to the principle of thermal expansion and contraction of carbon dioxide, the carbon dioxide gas does not squeeze the piston plate 1009. Because the reset spring 1010 is in a compressed state, the piston plate 1009 will move downward, driving the connecting rod 1011 to move downward, so that the connecting rod 1011 drives the hinged rod 1013 to pull, so that the hinged rod 1013 pulls the limit rod 1012 to move into the copper rod 1001, so that the limit rod 1012 returns to its original position. When it is necessary to reset the copper rod 1001 and extend it into the copper block 8, the current adjustment knob 2 is first turned off, and no current is output to the copper block 8. , first rotate the baffle 1015 to make the baffle 1015 rotate from the bottom of the limit rod 1012 to the other direction, and when the rotating sleeve 1014 rotates, the spring 1017 will shrink and move the copper rod 1001 downward, so that the copper rod 1001 extends into the inner side of the copper block 8, so that the outer wall of the copper rod 1001 fits with the inner side of the copper block 8. When the limit rod 1012 moves downward to the bottom of the baffle 1015, by loosening the baffle 1015, the spring 1017 is in a contracted state, which drives the rotating sleeve 1014 to reset, so that the baffle 1015 rotates to the top of the limit rod 1012, so that the baffle 1015 limits the limit rod 1012, and the copper rod 1001 is fixed in the copper block 8.

[0028] See also Figure 1-Figure 10On the basis of the above embodiment, another embodiment of the present invention further includes a positioning component 11 for preventing the fuse from falling and a shielding component 12 for protecting the staff, the positioning component 11 includes a connecting rod 1101, a slider 1102, a fixing rod 1103, a long rod 1106, a connecting piece 1104, a spring piece 1105, a support plate 1107 and a slide groove 1108; the outer surface of the copper rod 1001 is fixed with a connecting rod 1101, the outer wall of the connecting rod 1101 is slidably mounted with a slider 1102, the side of the slider 1102 close to the electrode sheet 1007 is fixed with a fixing rod 1103, the end of the fixing rod 1103 away from the slider 1102 is fixed with a connecting piece 1104, the end of the connecting piece 1104 away from the slider 1102 is fixed with a spring piece 1105, and the end of the spring piece 1105 away from the slider 1102 The side is fixedly connected to the side wall of the electrode sheet 1007, a support plate 1107 is fixed on the top of the fixed plate 7, a slide groove 1108 is opened on the side wall of the support plate 1107, a long rod 1106 is fixed to the side wall of the slider 1102, the outer wall of the long rod 1106 is in contact with the inner wall of the slide groove 1108, the slide groove 1108 is divided into three sections from bottom to top, and when the long rod 1106 moves in the first section of the inclined groove of the slide groove 1108, the spring sheet 1105 will squeeze the electrode sheet 1007, so that the electrode sheet 1007 always presses the pin of the fuse, and the second section of the straight groove of the slide groove 1108 makes the copper rod 1001 continue to press the pin of the fuse when it moves upward, thereby preventing the fuse from falling due to shaking when the transmission spring 1002 drives the copper rod 1001 to move upward.

[0029] When the long rod 1106 moves in the inclined groove of the third section of the slide groove 1108, the long rod 1106 will move away from the electrode sheet 1007, driving the slider 1102 away from the electrode sheet 1007, and the spring sheet 1105 will be driven to move by the fixed rod 1103, so that the spring sheet 1105 drives the two groups of electrode sheets 1007 on the copper rod 1001 away from each other, making it convenient to take and place the fuse.

[0030] The shielding assembly 12 includes a connecting seat 1201, a push rod 1202, a magnetic sheet 1203, a movable rod 1213, a moving plate 1207, a hinge block 1208, a protective plate 1210, a rotating block 1211, a rotating shaft 1209, an extrusion rod 1212, a round block 1204, a return spring 1205 and a hinge seat 1206; the connecting seat 1201 is fixed on the top of the workbench 4, and the push rod 1202 runs through the connecting seat 1201. , and the through-hole is slidably connected, a round block 1204 is fixed to one end of the push rod 1202, and a magnetic sheet 1203 is fixed to the other end of the push rod 1202. The magnetic sheet 1203 is provided with two groups, and the two groups of magnetic sheets 1203 are symmetrical with the center line in the vertical direction of the workbench 4. A return spring 1205 is fixed to the side of the round block 1204 close to the connecting seat 1201, and the side of the return spring 1205 away from the round block 1204 is fixed to the connecting seat 1201. The side wall of the connecting seat 1201 is slidably mounted with a movable plate 1207, a hinge seat 1206 is fixed on the side of the round block 1204 away from the connecting seat 1201, a movable rod 1213 is hinged on the hinge seat 1206, and one end of the movable rod 1213 away from the hinge seat 1206 is hinged on the top of the movable plate 1207, and a hinge block 1208 is fixed on the side wall of the connecting seat 1201, and the inner side of the hinge block 1208 A rotating shaft 1209 is rotatably installed, and the rotating shaft 1209 passes through the side wall of the hinge block 1208 and is rotatably connected at the penetration point. A protective plate 1210 is fixed to the outer wall of the rotating shaft 1209, and a rotating block 1211 is fixed to the end point of the rotating shaft 1209. A through hole is opened on the rotating block 1211. An extrusion rod 1212 is fixed to the side of the movable plate 1207 close to the protective plate 1210, and the extrusion rod 1212 passes through the through hole of the rotating block 1211.

[0031] When the present embodiment is working, when the copper rod 1001 moves upward due to the elastic force of the transmission spring 1002, the connecting rod 1101 drives the slider 1102 and the long rod 1106 to move upward. When the long rod 1106 moves in the first section of the inclined groove of the slide groove 1108, the long rod 1106 drives the slider 1102 to move toward the electrode sheet 1007, and the slider 1102 drives the fixed rod 1103 to move, so that the connecting piece 1104 drives the spring piece 1105 to squeeze the electrode sheet 1007, so that the electrode sheet 1007 is pressed. 07 is subjected to the extrusion force, so that the electrode sheet 1007 applies a pressing force to the pin of the fuse, so that the fuse maintains stability when moving upward, and prevents the copper rod 1001 from shaking when moving upward, causing the fuse to fall off the electrode sheet 1007 and be damaged. When the slider 1102 drives the long rod 1106 to move to the third section of the inclined groove of the slide groove 1108, the long rod 1106 drives the slider 1102 to move, so that the fixed rod 1103 drives the connecting piece 1104 to move, and the spring piece 1105 moves. The two sets of electrode sheets 1007 are moved away from each other, so that the electrode sheets 1007 do not contact the pins of the fuse, and the fuse can be taken out from the electrode sheets 1007 for easy replacement. The fuse pins to be tested are placed in the two sets of electrode sheets 1007, and the copper rod 1001 is pushed downward to move the long rod 1106 in the slide groove 1108, so that the long rod 1106 drives the slider 1102 to move on the connecting rod 1101, so that the two sets of electrode sheets 1007 are close to each other, and the electrode sheets are 1007 clamps the pin in position, and when the long rod 1106 moves to the first section of the inclined groove in the slide groove 1108, the long rod 1106 drives the slider 1102 away from the electrode sheet 1007, and the fixed rod 1103 drives the connecting sheet 1104 away from the electrode sheet 1007, so that no squeezing force is applied to the spring sheet 1105, and the spring sheet 1105 does not continue to apply squeezing force to the electrode sheet 1007, thereby preventing the spring sheet 1105 from continuously applying squeezing force to the electrode sheet 1007, which may easily cause damage to the pin of the fuse.

[0032] When the copper rod 1001 moves upward, because the copper material has antimagnetism, when the copper rod 1001 is removed from the copper block 8, when there is no current in the copper rod 1001, there will be no suction on the magnetic sheet 1203, so the staff can take the fuse on the electrode sheet 1007, and when the copper rod 1001 is removed from the copper block 8, it still carries current, which will form a magnetic field, and then it will attract the magnetic sheet 1203, so that the magnetic sheet 120 3 approaches the electrode sheet 1007, driving the push rod 1202 to move, so that the round block 1204 approaches the connecting seat 1201, compressing the return spring 1205, and when the push rod 1202 approaches the connecting seat 1201, the hinge seat 1206 squeezes the movable rod 1213, so that the movable rod 1213 rotates at the hinge, so that the movable rod 1213 squeezes the movable plate 1207 to move downward, so that the squeezing rod 1212 moves in the through hole of the rotating block 1211, The rotating block 1211 is squeezed, so that the rotating block 1211 drives the rotating shaft 1209 to reverse, and the rotating shaft 1209 drives the protective plate 1210 to reverse, so that the protective plate 1210 can shield the front of the workbench 4, thereby protecting the staff, preventing the staff from taking the fuse, preventing the staff from getting an electric shock, and causing harm to the staff's body. When the current of the copper rod 1001 disappears, the magnetic sheet 1203 is not affected by the magnetic sheet 1203. The attraction force and the return spring 1205 are in a compressed state, so that the return spring 1205 drives the round block 1204 away from the connecting seat 1201, resets the hinge seat 1206, and makes the hinge seat 1206 pull the movable rod 1213, so that the movable plate 1207 moves upward, drives the extrusion rod 1212 to move upward in the through hole of the rotating block 1211, drives the rotating block 1211 to rotate forward, and makes the rotating shaft 1209 drive the protective plate 1210 to be retracted, and no protective operation is performed.

[0033] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not depart from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A fuse test device based on power amplification, comprising a body (1), characterized in that: A display (3) and a workbench (4) are fixed to the front of the machine body (1); a current adjustment knob (2) is provided on the machine body (1); a power amplifier (5) and an intelligent mutual inductor (6) are fixed to the back of the machine body (1); a fixing plate (7) is fixed to the top of the workbench (4); a copper block (8) is fixed to the top of the fixing plate (7); the copper block (8) and the machine body (1) are electrically connected via a cable (9); a clamping assembly (10) is provided on the copper block (8); a positioning assembly (11) for preventing the fuse from falling is provided on the clamping assembly (10); and a shielding assembly (12) for protecting workers is provided on the workbench (4); The clamping assembly (10) comprises a copper rod (1001), a transmission spring (1002), an insulating plate (1003), a transmission rod (1004), a stopper (1005), a connecting spring (1006), an electrode sheet (1007), a sealing chamber (1008), a piston plate (1009), a reset spring (1010), a connecting rod (1011), a hinged rod (1013), a stopper (1015), a limit rod (1012), a rotating sleeve (1014), a fixed sleeve (1016) and a spring (1017); the copper rod (1001) is slidably mounted on the inner side of a copper block (8); an insulating plate (1003) is slidably mounted on the inner side of the copper block (8); and the insulating plate (1003) is slidably mounted on the inner side of the copper block (8). The copper block (8) has an inner wall, a transmission spring (1002) is fixed to the bottom of the insulating plate (1003), the bottom of the transmission spring (1002) is fixed to the inner side of the copper block (8), a sealed cavity (1008) is opened on the copper rod (1001), a piston plate (1009) is slidably mounted on the inner wall of the sealed cavity (1008), a connecting rod (1011) is fixed to the top of the piston plate (1009), a side wall of the copper rod (1001) passes through a limit rod (1012), and the penetration point is slidably connected, a hinged rod (1013) is hinged to the top of the connecting rod (1011), and one end of the hinged rod (1013) away from the connecting rod (1011) is hinged to the end point of the limit rod (1012).

2. A fuse test device based on power amplification according to claim 1, characterized in that: A transmission rod (1004) penetrates the top side wall of the copper rod (1001), and the penetration point is slidably connected. A stopper (1005) is fixed to one end of the transmission rod (1004), and an electrode sheet (1007) is fixed to the other end of the transmission rod (1004). The bottom of the electrode sheet (1007) is in contact with the inner side of the top of the copper rod (1001). A connecting spring (1006) is fixed to the side wall of the stopper (1005), and the side of the connecting spring (1006) away from the stopper (1005) is fixed to the outer wall of the copper rod (1001).

3. A fuse test device based on power amplification according to claim 1, characterized in that: A rotating sleeve (1014) is rotatably mounted on the top of the copper block (8), a fixed sleeve (1016) is fixed on the top of the copper block (8), a spring (1017) is fixed on the outer wall of the rotating sleeve (1014), a side of the spring (1017) away from the rotating sleeve (1014) is fixed to the inner wall of the fixed sleeve (1016), a baffle (1015) is fixed on the outer wall of the rotating sleeve (1014), the bottom of the baffle (1015) is in contact with the outer wall of the limiting rod (1012), a reset spring (1010) is fixed on the top of the piston plate (1009), and the top of the reset spring (1010) is fixed to the inner wall of the sealing chamber (1008).

4. A fuse test device based on power amplification according to claim 1, characterized in that: The positioning assembly (11) comprises a connecting rod (1101), a slider (1102), a fixed rod (1103), a connecting sheet (1104), a spring sheet (1105), a long rod (1106), a support plate (1107) and a slide groove (1108); the connecting rod (1101) is fixed to the outer wall of the copper rod (1001); the slider (1102) is slidably mounted on the outer wall of the connecting rod (1101); the fixed rod (1103) is fixed to a side of the slider (1102) away from the connecting rod (1101); the connecting sheet (1104) is fixed to an end of the fixed rod (1103) away from the slider (1102); the spring sheet (1105) is fixed to a side wall of the connecting sheet (1104); the side wall of the spring sheet (1105) is fixedly connected to the outer wall of the electrode sheet (1007); and the long rod (1106) is fixed to the outer wall of the slider (1102).

5. A fuse test device based on power amplification according to claim 4, characterized in that: A support plate (1107) is fixed on the top of the fixed plate (7), a sliding groove (1108) is provided on the side wall of the support plate (1107), and the inner wall of the sliding groove (1108) is in contact with the outer wall of the long rod (1106).

6. A fuse test device based on power amplification according to claim 1, characterized in that: The shielding assembly (12) comprises a connecting seat (1201), a push rod (1202), a return spring (1205), a magnetic sheet (1203), a round block (1204), a hinge seat (1206), a movable rod (1213), a movable plate (1207), a hinge block (1208), a rotating block (1211), a rotating shaft (1209), an extrusion rod (1212) and a protective plate (1210); the connecting seat (1201) is fixed to the top of the workbench (4); the side wall of the connecting seat (1201) is fixed with the hinge block (1208); the inner side of the hinge block (1208) is rotatably mounted with a rotating shaft (1209); the rotating shaft (1209) passes through the side wall of the hinge block (1208) and is rotatably connected at the penetration point; the outer wall of the rotating shaft (1209) is fixed with the protective plate (1210).

7. A fuse test device based on power amplification according to claim 6, characterized in that: A push rod (1202) passes through the connecting seat (1201), and the penetration point is slidably connected. A round block (1204) is fixed to one end of the push rod (1202), and a magnetic attraction plate (1203) is fixed to the other end of the push rod (1202). A return spring (1205) is fixed to the side wall of the round block (1204), and the side of the return spring (1205) away from the round block (1204) is fixed to the side wall of the connecting seat (1201). A movable plate (1207) is slidably installed on the side wall of the connecting seat (1201), and a hinge seat (1206) is fixed to the side wall of the round block (1204). A movable rod (1213) is hinged on the hinge seat (1206), and the end of the movable rod (1213) away from the hinge seat (1206) is hinged to the top of the movable plate (1207).

8. A fuse test device based on power amplification according to claim 7, characterized in that: A rotating block (1211) is fixed to the side wall of the rotating shaft (1209), and an extrusion rod (1212) is fixed to the side wall of the movable plate (1207), and the extrusion rod (1212) passes through the through hole of the rotating block (1211), and the penetration portion is fitted.

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