A DC resistance measuring device for converter transformer

Abstract

The present invention relates to the field of DC resistance measuring devices, and specifically discloses a DC resistance measuring device for a converter transformer, comprising an outer box, a top cover arranged on the top of the outer box, and a DC resistance tester body arranged in the outer box, wherein the outer box is provided with an adjustment component for adjusting the height and inclination of the DC resistance tester body, wherein the adjustment component comprises a first receiving groove arranged on the top of the outer box and in a "concave" shape, wherein the first receiving groove is vertically movably connected with a first extension plate adapted to the first receiving groove, and the front end of the first extension plate is open. The DC resistance measuring device for a converter transformer can achieve the rise and inclination adjustment of the DC resistance tester body by lifting the top cover through the arranged adjustment component, and the DC resistance tester body can be exposed and tilted forward when the top cover is opened, which is convenient for the heat dissipation of the DC resistance tester body, and is ergonomic and convenient for the operator to use.

Description

Technical Field

[0001] The invention relates to the field of direct current resistance measuring devices, and in particular to a direct current resistance value measuring device for a converter transformer. Background Art

[0002] The converter transformer is a power transformer connected between the converter bridge and the AC system, and is one of the key equipment in the DC transmission system. At present, in order to promptly discover and deal with the hidden dangers and defects of the converter transformer, it is often necessary to measure the DC resistance of the converter transformer, which can check the welding quality of the internal wires and leads of the converter transformer winding to ensure that there are no cold welds or desoldering at the welding points, thereby ensuring the reliability of the electrical connection of the winding. In addition, measuring the DC resistance can also help find out whether there is a short circuit between the winding layers and turns. The short circuit will cause the resistance value to decrease abnormally. By comparing the measured value with the design value or standard value, the short circuit problem can be discovered and dealt with in time. Measuring the DC resistance value of the converter transformer is one of the important means to ensure its safe and stable operation.

[0003] In the prior art, a DC resistance tester is often used to test the DC resistance of a converter transformer. For the convenience of use and carrying, the tester is generally installed inside a box. The box cover is opened and the wires are connected for use. However, after the box cover is opened, the display screen and operation buttons of the DC resistance tester are generally vertically upward, which is not ergonomic and inconvenient for the operator to view and operate. Moreover, the DC resistance tester is generally fixed inside the box, with only the display screen and other structures exposed, which affects its heat dissipation. In addition, the existing DC resistance tester requires an external wire power supply when in use, and the box is generally placed on a horizontal surface for use, and is completely stable by its own weight. It is easy for the wire to be pulled, causing the DC resistance tester to become unstable, resulting in poor stability and affecting the user experience.

[0004] Therefore, it is necessary to propose a converter transformer DC resistance measurement device to solve the above problems. Summary of the invention

[0005] The main purpose of the present invention is to provide a device for measuring the DC resistance of a converter transformer, which can effectively solve the problems in the background technology.

[0006] To achieve the above object, the technical solution adopted by the present invention is:

[0007] A converter transformer DC resistance value measuring device comprises an outer box, a top cover arranged on the top of the outer box, and a DC resistance tester body arranged in the outer box, wherein the outer box is provided with an adjustment component for adjusting the height and inclination of the DC resistance tester body, wherein the adjustment component comprises a first accommodating groove arranged on the top of the outer box and in a "concave" shape, wherein the first accommodating groove is vertically and movably connected with a first extension plate adapted to the first accommodating groove, and the front end of the first extension plate is open, and the top cover is located on the top of the first extension plate, wherein a substrate for supporting the DC resistance tester body is arranged on the inner side of the outer box, wherein the DC resistance tester body is fixed on the top of the substrate, and the substrate A first rotating shaft is fixedly provided at the middle part of the plate, and second through grooves connected with the first accommodating groove are symmetrically provided on the left and right sides of the inner cavity of the outer box body, and the ends of the first rotating shaft pass through the second through groove and are rotatably connected to the side walls of the first extension plate, and first guide grooves are symmetrically provided at the lower ends of the left and right sides of the inner cavity of the outer box body, and the first guide grooves are vertically arranged, and the upper ends of the first guide grooves are inclinedly provided with second guide grooves, and the outer wall of the end part of the first rotating shaft is fixedly connected with a connecting arm vertically arranged with the first rotating shaft, and a convex shaft is rotatably provided on the side surface of one end of the connecting arm away from the first rotating shaft, and the convex shaft is movably matched with the first guide groove and the second guide groove, and is configured so that when the convex shaft enters the second guide groove from the first guide groove, the base plate tilts forward.

[0008] Preferably, a second accommodating groove is provided on the top of the first extension plate, the second accommodating groove is vertically movably connected to the second extension plate, and the top of the second extension plate is fixed to the bottom of the top cover, the first extension plate is symmetrically provided with first through grooves connected to the second accommodating groove on the left and right sides, and the second extension plate is symmetrically fixedly connected with ramp plates corresponding to the first through grooves on the left and right sides, the ramp plate is slidably matched with the first through groove, and the side of the ramp plate away from the second extension plate is flush with the outer side of the first extension plate.

[0009] Preferably, the side walls of the outer box body are provided with a locking assembly, and the locking assembly includes a hollow base fixedly arranged on the upper ends of the left and right sides of the outer box body, a clamping strip is movably connected to the inner side of the hollow base, a third return spring is arranged between the clamping strip and the inner wall of the hollow base, and third through grooves corresponding to the hollow base and connected to the first accommodating groove are symmetrically arranged on the left and right sides of the outer box body, a clamping groove with a width greater than the width of the first through groove is arranged at the bottom of the first through groove, the bottom of the clamping strip away from the hollow base is an inclined surface, and the end of the clamping strip away from the hollow base can pass through the third through groove and be engaged with the clamping groove, and the lower end of the ramp plate away from the second extension plate is an inclined surface, and the inclined surface smoothly transitions to the side wall of the second extension plate.

[0010] Preferably, it also includes an adsorption component, which includes a riser pipe vertically and movably arranged at both ends of the bottom of the outer box body, and the top of the riser pipe is closed, a plastic suction cup is arranged at the bottom of the riser pipe, an annular flange is arranged on the outer side of the upper end of the riser pipe, and a first return spring is vertically arranged between the bottom of the flange and the bottom wall of the inner cavity of the outer box body, and the left and right ends of the inner cavity of the outer box body are rotatably connected with synchronous wheels, the number of synchronous wheels at the same end is two, and the two synchronous wheels at the same end are arranged up and down, and a synchronous belt is commonly arranged on the outer sides of the two synchronous wheels at the same end, a bearing seat is arranged on the side of the synchronous belt close to the first rotating shaft, and the bearing seat is rotatably connected to the first rotating shaft through a bearing, and an extrusion plate corresponding to the riser pipe is arranged on the side of the synchronous belt away from the first rotating shaft, and the extrusion plate and the bearing seat on the other side of the synchronous belt are arranged diagonally, so that the extrusion plate descends when the first rotating shaft rises, and the extrusion plate rises when the first rotating shaft descends.

[0011] Preferably, a purge assembly is provided on the inner side of the outer box body, and the purge assembly includes an air collecting hood fixedly arranged at the bottom of the inner cavity of the outer box body corresponding to the vertical pipe, the middle part of the inner side of the air collecting hood is rotatably connected with a second rotating shaft, and a fan blade is fixedly arranged on the second rotating shaft, and one end of the second rotating shaft close to the vertical pipe extends to the outside of the air collecting hood and is fixedly provided with a driven wheel, and the end of the air collecting hood away from the driven wheel is open, and a driving wheel meshing with the driven wheel is fixedly arranged on one side of the synchronous wheel below, the plastic suction cup is connected with the vertical pipe, and a vent is connected on one side of the upper end of the vertical pipe, and the vent is connected to the air collecting hood through a hose, so that the second rotating shaft rotates when the first rotating shaft is raised and lowered, and it is configured that when the first rotating shaft rises, the airflow direction inside the air collecting hood is from the inside of the air collecting hood to the hose.

[0012] Preferably, a plugging assembly is provided on the riser, and the plugging assembly includes a T-shaped column movably connected to the upper end of the riser, the lower end of the T-shaped column extends to the inner side of the riser and is provided with a sealing plug that slidably cooperates with the inner wall of the riser, and a second return spring is vertically provided between the upper end of the T-shaped column and the top of the riser, and when the second return spring is in an initial state, the sealing plug is located above the vent.

[0013] Preferably, a protrusion is provided at the top of one end of the edge of the plastic suction cup, and the protrusion is used to pull the edge of the plastic suction cup upward.

[0014] Preferably, the back side of the first extension plate is provided with a through hole corresponding to the DC resistance tester body and used for inserting wires and dissipating heat.

[0015] Preferably, the top cover is connected to the outer box body by a buckle.

[0016] Preferably, an inner cylinder is provided on the inner side of the wind collecting hood, the fan blades are located on the inner side of the inner cylinder, and there is a gap between one end of the inner cylinder close to the driven wheel and the inner wall of the wind collecting hood, and a through hole corresponding to the gap is provided on the outer side of the wind collecting hood.

[0017] Compared with the prior art, the present invention provides a device for measuring the DC resistance of a converter transformer, which has the following beneficial effects:

[0018] The converter transformer DC resistance value measuring device can achieve the rise and inclination adjustment of the DC resistance tester body by lifting the top cover through the arranged adjustment component. When the top cover is opened, the DC resistance tester body can be exposed and tilted forward, which is convenient for the heat dissipation of the DC resistance tester body, ergonomic, and easy for the operator to use. The structure is simple and the practicality is increased. The second extension plate can make the top cover rise higher, which is convenient for the operation of the DC resistance tester body. At the same time, the first extension plate and the top cover can be used to enclose the DC resistance tester body, which can reduce the interference of the external environment.

[0019] The converter transformer DC resistance value measuring device can lock the first extension plate by means of a locking assembly, thereby preventing the first extension plate from falling down automatically after the DC resistance tester body rises. When unlocking, it can be achieved by simply moving the second extension plate downward, without the need for additional operations, and is easy to use.

[0020] The converter transformer DC resistance value measuring device can realize the lifting linkage setting of the purge component and the DC resistance tester body through the adsorption component, so that the horizontal surface where the DC resistance tester body is located can be purged when the DC resistance tester body rises, and then adsorbed, which can increase the stability of the outer box when the DC resistance tester body is in use, avoid the occurrence of instability, and increase practicality. The sealing component can be used to seal the vent after purging, which is convenient for the plastic suction cup to be adsorbed to the horizontal surface after purging.

[0021] The converter transformer DC resistance value measuring device can facilitate the discharge of gas through the through hole after the vent is blocked by the cooperation of the inner cylinder and the through hole, and also facilitates the entry of gas through the through hole when the DC resistance tester body descends. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the structure of the present invention;

[0023] Figure 2 It is a structural schematic diagram of another perspective of the present invention;

[0024] Figure 3 It is a schematic diagram of the structure of the present invention in a disassembled state;

[0025] Figure 4 is a schematic structural diagram of the present invention in a disassembled state from another perspective;

[0026] Figure 5 It is a schematic diagram of the overall structure of the substrate, the adsorption component and the purge component in a tilted state of the present invention;

[0027] Figure 6 It is a schematic diagram of the overall structure of the substrate, the adsorption component and the purge component in a horizontal state of the present invention;

[0028] Figure 7 It is a structural schematic diagram of the outer box body of the present invention;

[0029] Figure 8 It is a schematic diagram of the structure of the adsorption component and the purge component when the first rotating shaft of the present invention rises;

[0030] Fig. 9 It is a structural schematic diagram of the adsorption component and the purge component when the first rotating shaft of the present invention descends;

[0031] Fig.10 It is a schematic diagram of the cross-sectional structure of the air collecting cover of the present invention;

[0032] Fig.11 It is a schematic diagram of the cross-sectional structure of the riser of the present invention;

[0033] Fig.12 It is a schematic diagram of the structure of the outer box, the first extension plate, the second extension plate, and the hollow base of the present invention in a disassembled state;

[0034] Fig.13 It is a structural schematic diagram of the slope plate of the present invention;

[0035] Fig.14 It is a partial cross-sectional structural schematic diagram of the outer box body, the first extension plate, the second extension plate, and the hollow base in a connected state of the present invention;

[0036] Fig.15 It is a structural schematic diagram of the DC resistance tester of the present invention when the body is in a hidden state.

[0037] In the figure: 1, DC resistance tester body; 2, outer box; 3, top cover; 4, first extension plate; 5, second extension plate; 6, hollow base; 7, ramp plate; 8, first through slot; 9, base plate; 10, plastic suction cup; 11, first rotating shaft; 12, connecting arm; 13, convex shaft; 14, synchronous wheel; 15, synchronous belt; 16, vertical pipe; 17, wind collecting cover; 18, extrusion plate; 19, first guide slot; 20, second guide slot; 21, second through slot; 22. First accommodating groove; 23. Driving wheel; 24. Second rotating shaft; 25. Driven wheel; 26. Hose; 27. First return spring; 28. Fan blade; 29. ​​Inner cylinder; 30. Through hole; 31. Flange; 32. Vent; 33. T-shaped column; 34. Sealing plug; 35. Second return spring; 36. Protrusion; 37. Through hole; 38. Slot; 39. Clip strip; 40. Second accommodating groove; 41. Third return spring; 42. Third through groove. DETAILED DESCRIPTION

[0038] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0039] like Figure 1-Figure 9 , Figure 12-Figure 15As shown, a converter transformer DC resistance value measuring device comprises an outer box body 2, a top cover 3 arranged on the top of the outer box body 2, and a DC resistance tester body 1 arranged in the outer box body 2, the top cover 3 is connected to the outer box body 2 by a buckle, and an adjustment component for adjusting the height and inclination of the DC resistance tester body 1 is arranged in the outer box body 2, and the adjustment component comprises a first accommodating groove 22 arranged on the top of the outer box body 2 and in a "concave" shape, the first accommodating groove 22 is vertically movably connected with a first extension plate 4 adapted to the first accommodating groove 22, and the front end of the first extension plate 4 is open, and the top cover 3 is located on the top of the first extension plate 4, and the back of the first extension plate 4 is A through hole 37 corresponding to the DC resistance tester body 1 and used for inserting wires and dissipating heat is provided, a second accommodating groove 40 is provided on the top of the first extension plate 4, the second accommodating groove 40 is vertically and movably connected to the second extension plate 5, and the top of the second extension plate 5 is fixed to the bottom of the top cover 3, the left and right sides of the first extension plate 4 are symmetrically provided with first through grooves 8 connected to the second accommodating groove 40, the left and right sides of the second extension plate 5 are symmetrically and fixedly connected with ramp plates 7 corresponding to the first through grooves 8, the ramp plates 7 are slidably matched with the first through grooves 8, and the side of the ramp plates 7 away from the second extension plate 5 is flush with the outer side of the first extension plate 4, and the inner side of the outer box body 2 is provided with a A substrate 9 is provided to support the DC resistance tester body 1. The DC resistance tester body 1 is fixed on the top of the substrate 9. A first rotating shaft 11 is fixedly provided in the middle of the substrate 9. Second through slots 21 connected to the first accommodating slot 22 are symmetrically provided on the left and right sides of the inner cavity of the outer box body 2. The ends of the first rotating shaft 11 pass through the second through slots 21 and are rotatably connected to the side walls of the first extension plate 4. First guide slots 19 are symmetrically provided on the lower ends of the left and right sides of the inner cavity of the outer box body 2. The first guide slots 19 are vertically provided. The upper ends of the first guide slots 19 are inclinedly provided with second guide slots 20. The outer wall of the end of the first rotating shaft 11 is fixedly connected with a second guide slot 20 arranged vertically with the first rotating shaft 11. The connecting arm 12 is disposed, and a convex shaft 13 is rotatably disposed on the side surface of one end of the connecting arm 12 away from the first rotating shaft 11, and the convex shaft 13 is movably matched with the first guide groove 19 and the second guide groove 20, and is configured so that when the convex shaft 13 enters the second guide groove 20 from the first guide groove 19, the base plate 9 tilts forward, and the adjustment component can be provided to realize the rise and inclination adjustment of the DC resistance tester body 1 by lifting the top cover 3, and when the top cover 3 is opened, the DC resistance tester body 1 can be exposed and tilted forward, which is convenient for the heat dissipation of the DC resistance tester body 1, conforms to ergonomics, is convenient for the operator to use, has a simple structure, and increases practicality.

[0040] Such as 12- Fig.14As shown, the side wall of the outer box body 2 is provided with a locking assembly, and the locking assembly includes a hollow base 6 fixedly arranged at the upper ends of the left and right sides of the outer box body 2, and a clamping strip 39 is movably connected to the inner side of the hollow base 6, and a third return spring 41 is arranged between the clamping strip 39 and the inner wall of the hollow base 6, and the left and right sides of the outer box body 2 are symmetrically provided with third through grooves 42 corresponding to the hollow base 6 and connected to the first accommodating groove 22, and the bottom of the first through groove 8 is provided with a clamping groove 38 with a width greater than that of the first through groove 8, and the clamping strip 39 is away from the hollow base. The bottom of one end of 6 is an inclined surface, and the end of the card strip 39 away from the hollow base 6 can pass through the third through slot 42 and be engaged with the card slot 38. The lower end of the ramp plate 7 away from the second extension plate 5 is an inclined surface, and the inclined surface and the side wall of the second extension plate 5 have a smooth transition. The first extension plate 4 can be locked by the provided locking assembly, so that the first extension plate 4 is prevented from falling down by itself after the DC resistance tester body 1 rises. When unlocking, it can be achieved by moving the second extension plate 5 downward without additional operation, which is convenient to use.

[0041] like Figure 3-Figure 6 , Figure 8-Figure 9 , Fig.11 As shown, it also includes an adsorption component, which includes a standpipe 16 vertically and movably arranged at both ends of the bottom of the outer box body 2, and the top of the standpipe 16 is closed, and a plastic suction cup 10 is arranged at the bottom of the standpipe 16, and a protrusion 36 is arranged at the top of one end of the edge of the plastic suction cup 10, and the protrusion 36 is used to pull the edge of the plastic suction cup 10 upward, and an annular flange 31 is arranged on the outer side of the upper end of the standpipe 16, and a first return spring 27 is vertically arranged between the bottom of the flange 31 and the bottom wall of the inner cavity of the outer box body 2, and the left and right ends of the inner cavity of the outer box body 2 are rotatably connected with a synchronous wheel 14, and the same end There are two synchronous wheels 14, and the two synchronous wheels 14 at the same end are arranged up and down, and a synchronous belt 15 is commonly arranged on the outer side of the two synchronous wheels 14 at the same end. A bearing seat is arranged on the side of the synchronous belt 15 close to the first rotating shaft 11, and the bearing seat is rotatably connected to the first rotating shaft 11 through a bearing, and an extrusion plate 18 corresponding to the riser 16 is arranged on the side of the synchronous belt 15 away from the first rotating shaft 11, and the extrusion plate 18 is diagonally arranged with the bearing seat on the other side of the synchronous belt 15, so that the extrusion plate 18 descends when the first rotating shaft 11 rises, and the extrusion plate 18 rises when the first rotating shaft 11 descends.

[0042] like Figure 3-Figure 6 , Figure 8-Figure 11As shown, a purge assembly is provided on the inner side of the outer box body 2, and the purge assembly includes an air collecting hood 17 fixedly arranged at the bottom of the inner cavity of the outer box body 2 and corresponding to the vertical pipe 16. The middle part of the inner side of the air collecting hood 17 is rotatably connected with a second rotating shaft 24, and a fan blade 28 is fixedly arranged on the second rotating shaft 24. One end of the second rotating shaft 24 close to the vertical pipe 16 extends to the outer side of the air collecting hood 17 and is fixedly provided with a driven wheel 25. The end of the air collecting hood 17 away from the driven wheel 25 is open, and a driving wheel 23 meshing with the driven wheel 25 is fixedly arranged on one side of the lower synchronous wheel 14. The plastic suction cup 10 is connected with the vertical pipe 16, and one side of the upper end of the vertical pipe 16 is connected with a vent 32. The vent 32 is connected to the air collecting hood 17 through a hose 26, so that the second rotating shaft 24 rotates when the first rotating shaft 11 is raised and lowered, and it is configured that when the first rotating shaft 11 rises, the air flow direction inside the air collecting hood 17 flows from the inside of the air collecting hood 17 to the hose 26;

[0043] By setting the adsorption component and the purge component in linkage with the lifting of the DC resistance tester body 1, the horizontal surface can be purged and then adsorbed when the DC resistance tester body 1 rises, which can increase the stability of the outer box 2 when the DC resistance tester body 1 is in use, avoid the occurrence of instability, and increase practicality.

[0044] like Fig.11 As shown, a sealing component is provided on the riser 16, and the sealing component includes a T-shaped column 33 movably connected to the upper end of the riser 16, the lower end of the T-shaped column 33 extends to the inner side of the riser 16 and is provided with a sealing plug 34 that slides with the inner wall of the riser 16, and a second return spring 35 is vertically provided between the upper end of the T-shaped column 33 and the top of the riser 16, and when the second return spring 35 is in the initial state, the sealing plug 34 is located above the vent 32, and the vent 32 can be sealed after purging by the provided sealing component, so as to facilitate the adsorption of the plastic suction cup 10 to the horizontal plane after purging.

[0045] like Fig.10 As shown, an inner cylinder 29 is provided on the inner side of the wind collecting hood 17, the fan blades 28 are located on the inner side of the inner cylinder 29, and there is a gap between the end of the inner cylinder 29 close to the driven wheel 25 and the inner wall of the wind collecting hood 17, and a through hole 30 corresponding to the gap is provided on the outer side of the wind collecting hood 17. The inner cylinder 29 and the through hole 30 cooperate with each other to facilitate the discharge of gas through the through hole 30 after the vent 32 is blocked, and it is also convenient for gas to enter from the through hole 30 when the DC resistance tester body 1 descends.

[0046] Working principle: when in use, first place the outer box body 2 on a suitable horizontal plane, then release the buckle between the outer box body 2 and the top cover 3, lift the top cover 3, the top cover 3 drives the second extension plate 5 to move up, the second extension plate 5 drives the first extension plate 4 to move up through the cooperation of the ramp plate 7 and the first through groove 8, the first extension plate 4 drives the base plate 9 to rise through the first rotating shaft 11, the base plate 9 drives the DC resistance tester body 1 to rise, the convex shaft 13 gradually enters the second guide groove 20 from the first guide groove 19, when entering the second guide groove 20, the convex shaft 13 rotates with the connecting arm 12, and then the connecting arm 12 drives the base plate 9 to rotate through the first rotating shaft 11, The base plate 9 drives the DC resistance tester body 1 to tilt forward. When the card slot 38 on the side of the first extension plate 4 matches the card strip 39, the card strip 39 will be clamped into the card slot 38 under the reverse force of the third reset spring 41, thereby fixing the first extension plate 4. At this time, the DC resistance tester body 1 rises to a suitable position and tilts forward. The wire can be inserted through the through opening 37. At the same time, since the first extension plate 4, the second extension plate 5 and the DC resistance tester body 1 are not in contact, the through opening 37 is also convenient for heat dissipation of the DC resistance tester body 1. In addition, the forward tilt of the DC resistance tester body 1 is ergonomic and easy to operate and use.

[0047] In addition, when the DC resistance tester body 1 rises, the first rotating shaft 11 will drive the synchronous belt 15 to operate through the bearing seat, and the extrusion plate 18 on one side of the synchronous belt 15 will move downward. When the synchronous belt 15 operates, the synchronous wheel 14 rotates, and the synchronous wheel 14 below drives the driving wheel 23 to rotate, and the driving wheel 23 drives the driven wheel 25 to rotate. The driven wheel 25 drives the fan blade 28 to rotate through the second rotating shaft 24, and then the fan blade 28 inhales gas through the hose 26 into the riser 16, and then blows downward to the horizontal surface to blow away impurities such as dust. When the extrusion plate 18 moves down to a certain extent, it will squeeze the T-shaped column 33, and the downward movement of the T-shaped column 33 drives the sealing plug 34 to move downward, and the second reset spring 35 is compressed , the sealing plug 34 blocks the vent 32, and the gas can no longer enter. Then the extrusion plate 18 will continue to move downward to drive the riser 16 and the plastic suction cup 10 to move downward as a whole. The first return spring 27 is compressed, and then the plastic suction cup 10 contacts the horizontal plane. The plastic suction cup 10 is squeezed to discharge the gas, thereby achieving negative pressure adsorption, which increases the stability of the device. After the vent 32 is blocked, the fan blades 28 continue to rotate. At this time, the gas can flow through the gap between the inner cylinder 29 and the inner wall of the wind collecting cover 17 to the through hole 30 for discharge. Then, the DC resistance tester body 1 can be used to test the DC resistance of the converter transformer. The specific test work is a conventional method and will not be repeated here.

[0048] After use, unplug the wires and other external devices, and then press down the top cover 3, the top cover 3 drives the second extension plate 5 to move downward, and the second extension plate 5 drives the ramp plate 7 to move downward. Since the outer side of the lower end of the ramp plate 7 is an inclined surface, when the lower end of the ramp plate 7 moves to the card slot 38, it will contact the card strip 39, and then the card strip 39 is pushed open under the action of the smoothly transitioned inclined surface, so that the first extension plate 4 is unlocked, and then drives the first extension plate 4 to move downward, and the first extension plate 4 drives the DC resistance tester body 1 to move downward through the first rotating shaft 11, and the convex shaft 13 gradually enters the first guide groove 19 from the second guide groove 20, and the DC resistance tester body 1 gradually moves downward and returns to the horizontal state. During this period, the fan blades 28 flip over, and since the vent 32 is blocked, at this time Gas can also enter through the through hole 30 and the gap between the inner cylinder 29 and the inner wall of the wind collecting hood 17. After the DC resistance tester body 1 is reset, the top cover 3 and the outer box body 2 are fixed by a buckle. Finally, the edge of the plastic suction cup 10 can be lifted by pulling the protrusion 36 upward to break the negative pressure state. Then the first reset spring 27 is reset, the plastic suction cup 10 is separated from the horizontal plane, the second reset spring 35 is also reset, and the sealing plug 34 moves up to open the vent 32 for subsequent use. The device only needs to lift the top cover 3 to achieve the rising, tilting forward, and bottom cleaning and adsorption of the DC resistance tester body 1, which is completed in one step, easy to operate, compact in structure, and increases convenience and practicality.

[0049] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A converter transformer DC resistance value measuring device, comprising an outer box (2), a top cover (3) arranged on the top of the outer box (2), and a DC resistance tester body (1) arranged in the outer box (2), characterized in that: The outer box (2) is provided with an adjustment component for adjusting the height and inclination of the DC resistance tester body (1), the adjustment component comprising a first accommodating groove (22) arranged at the top of the outer box (2) and in a "concave" shape, the first accommodating groove (22) being vertically movably connected to a first extension plate (4) adapted to the first accommodating groove (22), the front end of the first extension plate (4) being open, and the top cover (3) being located on the top of the first extension plate (4), the inner side of the outer box (2) being provided with a base plate (9) for supporting the DC resistance tester body (1), the DC resistance tester body (1) being fixed on the top of the base plate (9), the middle part of the base plate (9) being fixedly provided with a first rotating shaft (11), and the left and right sides of the inner cavity of the outer box (2) being symmetrically provided with a first rotating shaft (11) communicating with the first accommodating groove (22) a second through slot (21) formed on the outer casing (2), the end of the first rotating shaft (11) passes through the second through slot (21) and is rotatably connected to the side wall of the first extension plate (4); first guide slots (19) are symmetrically arranged at the lower ends of the left and right sides of the inner cavity of the outer box body (2); the first guide slots (19) are arranged vertically; the upper end of the first guide slot (19) is obliquely arranged with a second guide slot (20); the outer wall of the end of the first rotating shaft (11) is fixedly connected with a connecting arm (12) arranged vertically with the first rotating shaft (11); a convex shaft (13) is rotatably arranged on the side surface of one end of the connecting arm (12) away from the first rotating shaft (11); the convex shaft (13) is movably matched with the first guide slot (19) and the second guide slot (20), and is configured so that when the convex shaft (13) enters the second guide slot (20) from the first guide slot (19), the base plate (9) tilts forward; The invention also comprises an adsorption assembly, the adsorption assembly comprising a vertical and movable stand pipe (16) disposed at both ends of the bottom of the outer box body (2), the top of the stand pipe (16) being in a closed shape, a plastic suction cup (10) being disposed at the bottom of the stand pipe (16), an annular flange (31) being disposed on the outer side of the upper end of the stand pipe (16), a first return spring (27) being vertically disposed between the bottom of the flange (31) and the bottom wall of the inner cavity of the outer box body (2), the left and right ends of the inner cavity of the outer box body (2) being rotatably connected to synchronous wheels (14), the number of synchronous wheels (14) at the same end being two, and the two synchronous wheels (14) at the same end being The synchronous wheels (14) are arranged vertically, and a synchronous belt (15) is commonly arranged on the outer sides of the two synchronous wheels (14) at the same end. A bearing seat is arranged on the side of the synchronous belt (15) close to the first rotating shaft (11), and the bearing seat is rotatably connected to the first rotating shaft (11) through a bearing. An extrusion plate (18) corresponding to the vertical pipe (16) is arranged on the side of the synchronous belt (15) away from the first rotating shaft (11), and the extrusion plate (18) and the bearing seat on the other side of the synchronous belt (15) are arranged diagonally, so that when the first rotating shaft (11) rises, the extrusion plate (18) falls, and when the first rotating shaft (11) falls, the extrusion plate (18) rises.

2. A converter transformer DC resistance measuring device according to claim 1, characterized in that: A second receiving groove (40) is provided at the top of the first extension plate (4), the second receiving groove (40) is vertically movably connected to the second extension plate (5), and the top of the second extension plate (5) is fixed to the bottom of the top cover (3), the first extension plate (4) is symmetrically provided with first through grooves (8) connected to the second receiving groove (40) on the left and right sides, and the second extension plate (5) is symmetrically fixedly connected with ramp plates (7) corresponding to the first through grooves (8), the ramp plates (7) are slidably matched with the first through grooves (8), and a side of the ramp plate (7) away from the second extension plate (5) is flush with the outer side of the first extension plate (4).

3. A converter transformer DC resistance measuring device according to claim 2, characterized in that: The outer box body (2) is provided with a locking assembly on the side wall, the locking assembly comprising a hollow base (6) fixedly arranged at the upper ends of the left and right sides of the outer box body (2), a clamping strip (39) movably connected to the inner side of the hollow base (6), a third return spring (41) being arranged between the clamping strip (39) and the inner wall of the hollow base (6), and a third communication spring (41) corresponding to the hollow base (6) and communicating with the first receiving groove (22) being symmetrically arranged on the left and right sides of the outer box body (2). A slot (42) is provided at the bottom of the first through slot (8) with a width greater than that of the first through slot (8); the bottom of the end of the clamping strip (39) away from the hollow base (6) is an inclined surface, and the end of the clamping strip (39) away from the hollow base (6) can pass through the third through slot (42) and be engaged with the clamping slot (38); the lower end of the ramp plate (7) away from the second extension plate (5) is an inclined surface, and the inclined surface smoothly transitions to the side wall of the second extension plate (5).

4. A converter transformer DC resistance measuring device according to claim 1, characterized in that: A purge assembly is provided on the inner side of the outer box body (2), and the purge assembly comprises an air collecting hood (17) fixedly arranged at the bottom of the inner cavity of the outer box body (2) and at a position corresponding to the vertical pipe (16); a second rotating shaft (24) is rotatably connected to the middle part of the inner side of the air collecting hood (17); a fan blade (28) is fixedly arranged on the second rotating shaft (24); an end of the second rotating shaft (24) close to the vertical pipe (16) extends to the outer side of the air collecting hood (17) and is fixedly arranged with a driven wheel (25); an end of the air collecting hood (17) away from the driven wheel (25) is open, and a lower portion of the air collecting hood (17) is provided with a fan blade (28); A driving wheel (23) meshing with a driven wheel (25) is fixedly provided on one side of the synchronous wheel (14), the plastic suction cup (10) is connected to the vertical pipe (16), and a vent (32) is connected to one side of the upper end of the vertical pipe (16), and the vent (32) is connected to the air collecting hood (17) through a hose (26), so that the second rotating shaft (24) rotates when the first rotating shaft (11) is raised or lowered, and the configuration is such that when the first rotating shaft (11) rises, the air flow direction inside the air collecting hood (17) flows from the inside of the air collecting hood (17) to the hose (26).

5. A converter transformer DC resistance measuring device according to claim 4, characterized in that: The standpipe (16) is provided with a plugging assembly, the plugging assembly comprising a T-shaped column (33) movably connected to the upper end of the standpipe (16), the lower end of the T-shaped column (33) extending to the inner side of the standpipe (16) and provided with a sealing plug (34) slidably engaged with the inner wall of the standpipe (16), a second return spring (35) being vertically arranged between the upper end of the T-shaped column (33) and the top of the standpipe (16), and the sealing plug (34) being located above the vent (32) when the second return spring (35) is in an initial state.

6. A converter transformer DC resistance measuring device according to claim 5, characterized in that: A protrusion (36) is provided at the top of one end of the edge of the plastic suction cup (10), and the protrusion (36) is used to pull the edge of the plastic suction cup (10) upwards.

7. A converter transformer DC resistance measuring device according to claim 1, characterized in that: The back side of the first extension plate (4) is provided with a through hole (37) corresponding to the DC resistance tester body (1) and used for inserting a wire and dissipating heat.

8. A converter transformer DC resistance measuring device according to claim 1, characterized in that: The top cover (3) is connected to the outer box body (2) via a buckle.

9. A converter transformer DC resistance measuring device according to claim 5, characterized in that: An inner cylinder (29) is provided on the inner side of the wind collecting hood (17), the fan blades (28) are located on the inner side of the inner cylinder (29), and a gap is provided between an end of the inner cylinder (29) close to the driven wheel (25) and the inner wall of the wind collecting hood (17), and a through hole (30) corresponding to the gap is provided on the outer side of the wind collecting hood (17).

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