Adjustable current probe structure

Abstract

The invention belongs to the technical field of current probes, and particularly relates to an adjustable current probe structure, which comprises a substrate body, an insulating sleeve is movably inserted into the substrate body, a positioning nut is in threaded connection with a pipe orifice, far away from the substrate body, of the insulating sleeve, and a first elastic piece sleeves the insulating sleeve. The two ends of the first elastic piece are connected with the base plate body and the positioning nut respectively, multiple sets of needle tubes are inserted into the insulating sleeve, a needle tip is formed on the bottom end contact face of each needle tube, a voltage needle is inserted into the needle tube located in the center in a floating and insulating mode, and the multiple sets of needle tubes are connected and assembled through connecting adjustable assemblies. According to the invention, the service life of the probe can be prevented from being influenced by material melting or thermal characteristic change caused by easy deterioration when current concentrates through a small-area needle tip contact part.

Description

Technical Field

[0001] The invention belongs to the technical field of current probes, and in particular relates to an adjustable current probe structure. Background Art

[0002] The battery probe is a device used for battery formation, capacity division and detection. Its main purpose is to act as a connector between the transmission circuit and the battery tab, and to achieve the function of low-resistance current transmission by piercing the oxide layer on the surface of the battery tab.

[0003] The current probe is used to perform electrical tests on the battery tabs to confirm the yield and reliability of the product. Since the sizes of the batteries to be tested are different, the sizes of the battery tabs that contact the current probes are also different. Since the tips of the bottom ends of existing current probes are of fixed size, it is difficult to adjust the overall area of ​​the tip at the bottom of the probe according to the size of the battery tabs. For example, when the probe needs to pass a larger capacity current, the current is concentrated through a small area of ​​the tip contact area, which is prone to deterioration and causes material melting or changes in thermal properties, thereby affecting the service life of the probe. Summary of the invention

[0004] In order to solve the above technical problems, the present invention is achieved through the following technical solutions: The present invention discloses an adjustable current probe structure, comprising a substrate body, an insulating sleeve movably inserted on the substrate body, a positioning nut threadedly connected to the insulating sleeve at a tube mouth away from the substrate body, and a first elastic member sleeved on the insulating sleeve, the two ends of the first elastic member are respectively connected to the substrate body and the positioning nut, a plurality of groups of needle tubes are inserted in the insulating sleeve, and a needle tip is formed on the bottom contact surface of each needle tube, a voltage needle is inserted in a floating insulation in the needle tube located at the center, and the plurality of groups of needle tubes are connected and assembled with each other by connecting adjustable components.

[0005] Furthermore, the multiple groups of needle tubes include a first hollow needle rod, a second hollow needle rod and a third hollow needle rod which are sequentially sleeved, the first hollow needle rod is fitted with an insulating sleeve, a floating insulation is inserted with a voltage needle in the third hollow needle rod, the second hollow needle rod and the third hollow needle rod are connected by a disassembly connection assembly, the first hollow needle rod, the second hollow needle rod and the third hollow needle rod are also connected by a disassembly connection assembly, and the lengths of the first hollow needle rod, the second hollow needle rod and the third hollow needle rod increase equidistantly in sequence.

[0006] Furthermore, the connecting adjustable component includes a support ring, a support rod, an adjusting screw, an insulating block and a locking nut. The support ring is fixedly sleeved on the outer ring surface of the insulating sleeve extending above the base plate body, and at least two support rods are vertically fixed on the support ring, and an adjusting screw is fixed to the top end of each of the support rods. The top end of the third hollow needle rod is insulated and connected to the outer ring surface with at least two insulating blocks, and an adjusting screw extends upward from each of the insulating blocks. Two locking nuts are threadedly connected to the adjusting screw, and the two locking nuts are respectively located on the upper and lower surfaces of the insulating block.

[0007] Furthermore, the two groups of the disassembly connection components are offset from each other, and the disassembly connection components include a second elastic member, a plug-in column, an insulating connection block and a locking screw. At least four second elastic members are vertically offset and fixed on the upper surface of the support ring, and a plug-in column is fixed on the upper end face of each second elastic member. At least two insulating connection blocks are fixed on the top outer ring surfaces of the first hollow needle rod and the second hollow needle rod, and the two groups of insulating connection blocks are offset from each other. A plug-in hole is vertically penetrated on the insulating connection block, and a plug-in column is plugged into the plug-in hole. A threaded hole is horizontally opened in the insulating connection block, and the threaded hole extends to the first hollow needle rod, the second hollow needle rod and the third hollow needle rod. A through hole is also opened on the plug-in column, and the hollowness of the through hole is aligned with the center of the threaded hole. A locking screw of insulating material is threadedly connected in the threaded hole, and the locking screw is threadedly connected to the threaded holes of the first hollow needle rod, the second hollow needle rod and the third hollow needle rod in sequence.

[0008] Furthermore, the disassembly connection assembly also includes a metal rod and an electromagnetic ring. The bottom of each second elastic member is insulated and connected with a metal rod. A plurality of electromagnetic rings are insulated and fixed on the support ring, and a metal rod is inserted into each electromagnetic ring.

[0009] Furthermore, the first hollow needle rod, the second hollow needle rod and the third hollow needle rod are all made of metal heat-conducting material, and an annular cooling cavity is formed inside the rod body, and the cooling cavity is filled with coolant.

[0010] Furthermore, a flow cavity is provided inside the locking screw, and a flow guide tube is connected to the outer end thereof. A plurality of alignment holes are provided on the outer cavity wall of the flow cavity, and the plurality of alignment holes are aligned with the connecting holes provided on the upper cavity wall of the cooling cavity.

[0011] Furthermore, a bevel column is slidably inserted in the connecting hole, and the inclined surface of the bevel column faces the tail direction of the locking screw, and the bottom end of the bevel column is connected to the top cavity wall of the cooling cavity through a third elastic member.

[0012] The present invention has the following beneficial effects: 1. The present invention cooperates with a connecting adjustable component and a disassembling connecting component. The disassembling connecting component can connect the third hollow needle rod with the second hollow needle rod and the first hollow needle rod, so that the overall area of ​​the needle tip on the lower end face can be increased in sequence, and the connecting adjustable component can push the needle tip at the bottom end of the connected hollow needle rod to extend from the bottom end of the insulating sleeve, so that the needle tip with an increased area can fully contact the battery ear to be tested, preventing the current from being concentrated through a small area of ​​the needle tip contact part, which is easy to deteriorate and cause material melting or thermal property changes, thereby affecting the service life of the probe, and the needle tip corresponding to the needle tube that is not connected is flush with the bottom end of the insulating sleeve, so that it will not cause damage to the part other than the battery ear on the side.

[0013] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0015] Figure 1 It is a schematic diagram of the overall structure disclosed in the present invention; Figure 2 It is an assembly diagram of multiple hollow needle rods disclosed in the present invention; Figure 3 is a cross-sectional view of the hollow needle rod disclosed in the present invention; Figure 4 The present invention discloses Figure 3 A partial enlarged view of the middle part; Figure 5 The present invention discloses Figure 3 A partial enlarged view of point B in the middle.

[0016] In the figure: 1. substrate body; 2. insulating sleeve; 21. positioning nut; 22. first elastic member; 3. needle tube; 31. needle tip; 32. first hollow needle rod; 33. second hollow needle rod; 34. third hollow needle rod; 35. cooling chamber; 36. connecting hole; 4. voltage needle; 5. connecting adjustable component; 51. support ring; 52. support rod; 53. adjusting screw; 54. insulating block; 55. locking nut; 6. disassembling connecting component; 61. second elastic member; 62. plug-in column; 63. insulating connecting block; 631. threaded hole; 64. locking screw; 641. flow chamber; 642. alignment hole; 65. metal rod; 66. electromagnetic ring; 67. guide tube; 7. inclined column; 8. third elastic member. DETAILED DESCRIPTION

[0017] 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.

[0018] In the description of the present invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inside", "all around" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0019] See also Figure 1-Figure 5 As shown, the present invention is an adjustable current probe structure, comprising a substrate body 1, an insulating sleeve 2 is movably inserted on the substrate body 1, a positioning nut 21 is threadedly connected to the insulating sleeve 2 at the tube mouth away from the substrate body 1, and a first elastic member 22 is sleeved on the insulating sleeve 2, and the two ends of the first elastic member 22 are respectively connected to the substrate body 1 and the positioning nut 21, a plurality of groups of needle tubes 3 are inserted in the insulating sleeve 2, and a needle tip 31 is formed on the bottom contact surface of each needle tube 3, a voltage needle 4 is inserted in the needle tube 3 at the center in a floating insulation manner, and the plurality of groups of needle tubes 3 are connected and assembled to each other through an adjustable connecting component 5; Specifically, the present invention slides at least four groups of needle tubes 3 in the insulating sleeve 2, and the bottom end of each group of needle tubes 3 is formed with a needle tip 31, and two adjacent needle tubes 3 are connected to each other by connecting an adjustable component 5. When it is necessary to increase the area of ​​the needle tip 31 at the bottom end of the needle tube 3 so that it can contact with a larger battery pole ear for electrical testing, the needle tube 3 at the center and the second needle tube 3 can be connected to each other by connecting the adjustable component 5, thereby increasing the overall area of ​​the needle tip 31, and then the two connected needle tubes 3 are pushed out of the bottom end of the insulating sleeve 2, so that the needle tip 31 with an increased area can fully contact with the battery pole ear to be tested, thereby preventing the current from concentrating on the small area of ​​the needle tip 31 contact part. It is easy to deteriorate and cause material melting or change in thermal properties, thereby affecting the service life of the probe, while the needle tip 31 corresponding to the unconnected needle tube 3 is flush with the bottom end of the insulating sleeve 2, so that it will not cause damage to the part other than the battery pole ear on the side; and when it is necessary to reduce the area of ​​the needle tip 31, the adjustable component 5 is connected to disconnect the three groups of needle tubes 3, so that the three needle tubes 3 are independent of each other, and then the needle tube 3 at the center is driven downward separately, so that it can reduce the contact area between the lower needle tip 31 and the battery pole ear to be tested, so as to accurately perform contact electrical tests on small-sized battery pole ears, thereby preventing the needle tip 31 below the needle tube 3 from being large in area, which affects the accuracy and reliability of the electrical test of the battery to be tested.

[0020] In this embodiment, the plurality of needle tubes 3 include a first hollow needle rod 32, a second hollow needle rod 33 and a third hollow needle rod 34 which are sleeved in sequence, the first hollow needle rod 32 is fitted with the insulating sleeve 2, the third hollow needle rod 34 is inserted with a floating insulation plug with a voltage needle 4, the second hollow needle rod 33 and the third hollow needle rod 34 are connected by a disassembly connection assembly 6, the first hollow needle rod 32, the second hollow needle rod 33 and the third hollow needle rod 34 are also connected by a disassembly connection assembly 6, and the lengths of the first hollow needle rod 32, the second hollow needle rod 33 and the third hollow needle rod 34 are equidistantly increased in sequence; Specifically, the three hollow needle rods designed from the inside to the outside can be connected or disassembled to each other by disassembling the connecting assembly 6, so that the area of ​​the needle tip 31 at the bottom of the three hollow needle rods can be adjusted, so as to cope with different sizes of battery pole ears to be tested; and the lengths of the three hollow needle rods increase from the inside to the outside, so that the first hollow needle rod 32 or the second hollow needle rod 33 located on the outside will not interfere with the normal downward push and extension of the third hollow needle rod 34 or the second hollow needle rod 33 and the third hollow needle rod 34 connected to each other, so that the needle tip 31 with the adjusted area can accurately contact the battery pole ear for electrical testing.

[0021] In this embodiment, the connecting adjustable component 5 includes a support ring 51, a support rod 52, an adjusting screw 53, an insulating block 54 and a locking nut 55. The support ring 51 is fixedly sleeved on the outer ring surface of the insulating sleeve 2 extending above the substrate body 1, and at least two support rods 52 are vertically fixed on the support ring 51, and the top end of each of the support rods 52 is fixed with an adjusting screw 53, and the top end of the third hollow needle rod 34 is insulated and connected with at least two insulating blocks 54. An adjusting screw 53 extends upward from each of the insulating blocks 54, and two locking nuts 55 are threadedly connected to the adjusting screw 53, and the two locking nuts 55 are respectively located on the upper and lower surfaces of the insulating block 54; Specifically, by twisting the symmetrical locking nut 55, the symmetrical insulating block 54 is driven to slide downward along the adjusting screw 53, so as to facilitate the third hollow needle rod 34 at the center to slide downward, so as to facilitate the needle tip 31 at the bottom end of the third hollow needle rod 34 to extend from the bottom ends of the other two hollow needle rods, so that it can contact the small-sized battery pole ear. Since the support ring 51 is fixedly sleeved on the insulating sleeve 2, and the insulating sleeve 2 is slidably inserted into the substrate body 1 through the second elastic member 61, the extended third hollow needle rod 34 can also pass through when contacting the battery pole ear. Through the cooperation of the support rod 52 and the support ring 51, the first elastic member 22 is provided with buffer protection; similarly, when the second hollow needle rod 33 is connected to the third hollow needle rod 34 by disassembling the connecting assembly 6, the locking nut 55 is twisted at this time, so that the third hollow needle rod 34 is driven to move downward through the insulating block 54, and then the third hollow needle rod 34 will drive the connected second hollow needle rod 33 to move downward synchronously, and then it can push the connected and enlarged needle tip 31 to extend from the bottom end of the first hollow needle rod 32, so that the enlarged needle tip 31 can fully contact the large-sized battery pole ear for electrical testing.

[0022] In this embodiment, the two groups of the disassembly connection components 6 are mutually staggered, and the disassembly connection components 6 include a second elastic member 61, a plug-in column 62, an insulating connection block 63 and a locking screw 64. At least four second elastic members 61 are vertically staggered and fixed on the upper surface of the support ring 51, and the upper end surface of each second elastic member 61 is fixed with a plug-in column 62. At least two insulating connection blocks 63 are fixed on the top outer ring surface of the first hollow needle rod 32 and the second hollow needle rod 33, and the two groups of insulating connection blocks 63 are mutually staggered, and the insulating connection blocks 63 are vertically penetrated with openings. A plug-in hole is provided, and a plug-in column 62 is plugged into each of the plug-in holes. A threaded hole 631 is horizontally provided in the insulating connection block 63, and the threaded hole 631 extends to the first hollow needle rod 32, the second hollow needle rod 33 and the third hollow needle rod 34. A through hole is also provided on the plug-in column 62, and the hollow of the through hole is aligned with the hole center of the threaded hole 631. A locking screw 64 of an insulating material is threadedly connected in the threaded hole 631, and the locking screw 64 is threadedly connected to the threaded holes 631 of the first hollow needle rod 32, the second hollow needle rod 33 and the third hollow needle rod 34 in sequence; Specifically, when the second hollow needle rod 33 and the third hollow needle rod 34 need to be connected, the bottom ends of the three hollow needle rods are all in a flush state. At this time, the corresponding locking screw 64 on the second hollow needle rod 33 is first twisted to make the screw rod continuously twisted into the threaded hole 631 and enter the threaded hole 631 opened on the third hollow needle rod 34, thereby facilitating the second hollow needle rod 33 and the third hollow needle rod 34 to be quickly connected. Then, the locking nut 55 is twisted to push the connected second hollow needle rod 33 and the third hollow needle rod 34 to slide downward through the insulating block 54, and the length of the upper ends of the three hollow needle rods depends on The three hollow needle rods 33 and 32 are connected to each other, and the bottom ends of the three hollow needle rods are extended out of the insulating sleeve 2, so that the needle tip 31 with an increased area can be pushed out, which is convenient for large-scale needles. The battery pole ears of the three-inch battery are fully and stably in contact, and when the bottom ends of the three hollow needle rods rise to the flush position, the locking screws 64 are twisted respectively at this time, so that the upper symmetrical locking screws 64 are returned to the rod body of the second hollow needle rod 33, and the top body of the lower symmetrical locking screws 64 is returned to the rod body of the third hollow needle rod 34, and then the second elastic member 61 cooperates to facilitate the gravity support of the mutually independent hollow needle rods; and when it is necessary to replace the first and second hollow needle rods 33 that have been used for a long time, taking the first hollow needle rod 32 as an example, at this time, it is only necessary to return the lower locking screw 64 to the insulating connection The locking screw 64 is released from the fixing of the first hollow needle rod 32 in the connecting block 63, and then the first hollow needle rod 32 is pushed downward to be pulled out and disengaged from between the insulating sleeve 2 and the second hollow needle rod 33, and then the new first hollow needle rod 32 is inserted between the insulating sleeve 2 and the second hollow needle rod 33 and pushed upward to a suitable position, and then the locking screw 64 is twisted again to quickly fix the replaced first hollow needle rod 32, thereby facilitating the quick disassembly and replacement of the hollow needle rod that has been used for a long time, which not only does not affect the normal use of other hollow needle rods, but also does not require the disassembly and replacement of other hollow needle rods.

[0023] In this embodiment, the detachable connection assembly 6 further includes a metal rod 65 and an electromagnetic ring 66. The bottom of each second elastic member 61 is insulated and connected with a metal rod 65. A plurality of electromagnetic rings 66 are insulated and fixed on the support ring 51, and a metal rod 65 is inserted into each electromagnetic ring 66. Specifically, when the second hollow needle rod 33 and the third hollow needle rod 34 are connected to each other, the metal rod 65 at the lower end of the second elastic member 61 corresponding to the second hollow needle rod 33 will be separated from the magnetic adsorption of the powered-off electromagnetic ring 66, so that the metal rod 65 will slide freely in the electromagnetic ring 66, and then when the locking nut 55 is twisted to make the third hollow needle rod 34 drive the second hollow needle rod 33 to move downward synchronously, the second elastic member 61 corresponding to the second hollow needle rod 33 will not interfere with the normal downward sliding of the connected hollow needle rods, and when the second hollow needle rod 33 and the third hollow needle rod 34 are reset and disconnected, the electromagnetic suction cup installed on the inner ring surface of the electromagnetic ring 66 will adsorb and fix the metal rod 65, and then the second elastic member 61 will gravity support the second hollow needle rod 33.

[0024] In this embodiment, the first hollow needle rod 32, the second hollow needle rod 33 and the third hollow needle rod 34 are all made of metal heat-conducting material, and an annular cooling cavity 35 is formed inside the rod body, and the cooling cavity 35 is filled with coolant; specifically, the coolant in the cooling cavity 35 can dissipate heat for the hollow needle rod used for a long time.

[0025] In this embodiment, a flow cavity 641 is formed inside the locking screw 64, and a guide tube 67 is connected to the outer end thereof. A plurality of alignment holes 642 are formed on the outer cavity wall of the flow cavity 641, and the plurality of alignment holes 642 are aligned with the communication holes 36 formed on the upper cavity wall of the cooling cavity 35. Specifically, for example, when the corresponding locking screw 64 on the second hollow needle rod 33 is rotated into the threaded hole 631 corresponding to the third hollow needle rod 34, the alignment hole 642 opened on the locking screw 64 will be aligned with the corresponding connecting hole 36 on the cooling chamber 35 on the second hollow needle rod 33, and then the guide tube 67 on one of the locking screws 64 will inject the coolant into the cooling chamber 35 through the flow chamber 641, the alignment hole 642 and the connecting hole 36, while the other guide tube 67 will discharge the coolant in the cooling chamber 35, so that the coolant can circulate in the cooling chamber 35 to quickly cool down and dissipate heat of the hollow needle rod; and when the locking screw is twisted outward, so that the second hollow needle rod 33 and the third hollow needle rod 34 are disconnected, the alignment hole 642 will be disaligned with the connecting hole 36, so that the coolant in the cooling chamber 35 on the unconnected and unused second hollow needle rod 33 will no longer circulate, thereby reducing energy consumption.

[0026] In this embodiment, a bevel column 7 is slidably inserted into the communication hole 36, and the inclined surface of the bevel column 7 faces the tail direction of the locking screw 64, and the bottom end of the bevel column 7 is connected to the top cavity wall of the cooling cavity 35 through the third elastic member 8; Specifically, taking the second hollow needle rod 33 as an example, when the locking screw 64 is twisted into the threaded hole 631 of the second hollow needle rod 33, the rod body of the locking screw 64 will push the bevel column 7 downward and compress it into the cooling chamber 35, and the connecting hole 36 will be opened. Therefore, when the locking screw 64 continues to rotate into the third hollow needle rod 34, the alignment hole 642 will be aligned and connected with the connecting hole 36, so that the coolant can circulate; and when the second hollow needle rod 33 needs to be disassembled, the locking screw 64 will retreat from the threaded hole 631 of the second hollow needle rod 33 to the insulating connecting block 63, and will be free from the squeezing of the bevel column 7, and then the elastic restoring force of the third elastic member 8 will push the bevel column 7 to slide upward in the connecting hole 36, so that it blocks the connecting hole 36, and at this time, the lowest slope of the bevel column 7 will be flush with the orifice of the connecting hole 36, so that it will not interfere with the normal rotation and entry of the locking screw 64.

[0027] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0028] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. An adjustable current probe structure, characterized in that: The invention comprises a substrate body (1), an insulating sleeve (2) movably inserted on the substrate body (1), a positioning nut (21) being threadedly connected to the pipe mouth of the insulating sleeve (2) away from the substrate body (1), and a first elastic member (22) being sleeved on the insulating sleeve (2), the two ends of the first elastic member (22) being respectively connected to the substrate body (1) and the positioning nut (21), a plurality of groups of needle tubes (3) being inserted in the insulating sleeve (2), and a needle tip (31) being formed on the bottom contact surface of each needle tube (3), a voltage needle (4) being floatingly insulated and inserted in the needle tube (3) at the center, and the plurality of groups of needle tubes (3) being connected and assembled to each other via a connecting adjustable component (5).

2. The adjustable current probe structure according to claim 1, characterized in that: The plurality of needle tubes (3) comprise a first hollow needle rod (32), a second hollow needle rod (33) and a third hollow needle rod (34) which are sleeved in sequence, wherein the first hollow needle rod (32) is fitted with the insulating sleeve (2), and a voltage needle (4) is inserted in the third hollow needle rod (34) in a floating insulating manner, the second hollow needle rod (33) and the third hollow needle rod (34) are connected via a disassembly connection assembly (6), and the first hollow needle rod (32), the second hollow needle rod (33) and the third hollow needle rod (34) are also connected via a disassembly connection assembly (6), and the lengths of the first hollow needle rod (32), the second hollow needle rod (33) and the third hollow needle rod (34) are equidistantly increased in sequence.

3. The adjustable current probe structure according to claim 2, characterized in that: The connecting adjustable component (5) comprises a support ring (51), a support rod (52), an adjusting screw (53), an insulating block (54) and a locking nut (55); the support ring (51) is fixedly sleeved on the outer ring surface of the insulating sleeve (2) extending above the base plate body (1); at least two support rods (52) are vertically fixed on the support ring (51); the top end of each support rod (52) is fixed with an adjusting screw (53); the top end of the third hollow needle rod (34) is insulatedly connected to the outer ring surface of at least two insulating blocks (54); an adjusting screw (53) extends upward from each insulating block (54); two locking nuts (55) are threadedly connected to the adjusting screw (53); and the two locking nuts (55) are respectively located on the upper and lower surfaces of the insulating block (54).

4. The adjustable current probe structure according to claim 3, characterized in that: The two groups of disassembly connection components (6) are arranged in a staggered manner with respect to each other. The disassembly connection components (6) include a second elastic member (61), a plug-in column (62), an insulating connection block (63) and a locking screw (64). At least four second elastic members (61) are fixed on the upper surface of the support ring (51) in a vertically staggered manner, and a plug-in column (62) is fixed on the upper end surface of each second elastic member (61). At least two insulating connection blocks (63) are fixed on the top outer ring surface of the first hollow needle rod (32) and the second hollow needle rod (33). The two groups of insulating connection blocks (63) are arranged in a staggered manner with respect to each other. A plug-in column (62) is vertically penetrated on the insulating connection block (63). The insulating connection block (63) has a threaded hole (631) formed horizontally therein, and the threaded hole (631) extends to the first hollow needle rod (32), the second hollow needle rod (33) and the third hollow needle rod (34). The plugging column (62) also has a through hole formed therein, and the hollow center of the through hole is aligned with the center of the threaded hole (631). A locking screw (64) made of insulating material is threadedly connected to the threaded hole (631) of the first hollow needle rod (32), the second hollow needle rod (33) and the third hollow needle rod (34).

5. The adjustable current probe structure according to claim 4, characterized in that: The detachable connection assembly (6) further comprises a metal rod (65) and an electromagnetic ring (66); the bottom of each second elastic member (61) is insulated and connected to a metal rod (65); a plurality of electromagnetic rings (66) are insulated and fixed to the support ring (51); and each electromagnetic ring (66) is inserted with a metal rod (65).

6. The adjustable current probe structure according to claim 4, characterized in that: The first hollow needle rod (32), the second hollow needle rod (33) and the third hollow needle rod (34) are all made of a metal heat-conducting material, and an annular cooling cavity (35) is formed inside the rod body, and the cooling cavity (35) is filled with a cooling liquid.

7. The adjustable current probe structure according to claim 3, characterized in that: A flow cavity (641) is provided inside the locking screw (64), and a flow guide tube (67) is connected to the outer end thereof; a plurality of alignment holes (642) are provided on the outer cavity wall of the flow cavity (641), and the plurality of alignment holes (642) are aligned with the connecting holes (36) provided on the upper cavity wall of the cooling cavity (35).

8. The adjustable current probe structure according to claim 7, characterized in that: A bevel column (7) is slidably inserted into the communication hole (36), and the inclined surface of the bevel column (7) faces the tail direction of the locking screw (64), and the bottom end of the bevel column (7) is connected to the top cavity wall of the cooling cavity (35) via a third elastic member (8).

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