CN112285419A - Jointing clamp - Google Patents
Jointing clamp Download PDFInfo
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- CN112285419A CN112285419A CN202011047187.2A CN202011047187A CN112285419A CN 112285419 A CN112285419 A CN 112285419A CN 202011047187 A CN202011047187 A CN 202011047187A CN 112285419 A CN112285419 A CN 112285419A
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- contact finger
- voltage
- current
- current contact
- chuck
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
- G01R1/0408—Test fixtures or contact fields; Connectors or connecting adaptors; Test clips; Test sockets
- G01R1/0416—Connectors, terminals
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- General Physics & Mathematics (AREA)
- Measuring Leads Or Probes (AREA)
Abstract
本发明公开了一种接线钳，包括：第一夹臂，包括第一手柄，与所述第一手柄连接的第一夹头，以及间隔设于所述第一夹头上的第一电流触指和第一电压触指；所述第一电流触指与所述第一电压触指之间设有第一绝缘隔离件；第二夹臂，包括第二手柄，与所述第二手柄连接的第二夹头，以及间隔设于所述第二夹头上的第二电流触指和第二电压触指；所述第二电流触指与所述第一电流触指对应设置，所述第二电压触指与所述第一电压触指对应设置；所述第二电流触指与所述第二电压触指之间设有第二绝缘隔离件。本发明的接线钳能使不拆线测量回路电阻仪适用于不同现场环境，且能严格满足回路电阻测量中的接线规则，同时当现场预留引出线较短时，也能进行测试。
The invention discloses a wiring clamp, comprising: a first clamp arm, a first handle, a first clamp connected with the first handle, and first current contacts arranged on the first clamp at intervals finger and a first voltage contact finger; a first insulating spacer is arranged between the first current contact finger and the first voltage contact finger; a second clamping arm, including a second handle, is connected with the second handle The second chuck, and the second current contact finger and the second voltage contact finger arranged on the second chuck at intervals; the second current contact finger is set corresponding to the first current contact finger, the A second voltage contact finger is arranged corresponding to the first voltage contact finger; a second insulating spacer is arranged between the second current contact finger and the second voltage contact finger. The wiring clamp of the invention can make the non-disconnecting loop resistance measuring instrument suitable for different on-site environments, and can strictly meet the wiring rules in loop resistance measurement, and can also test when the on-site reserved lead wires are short.
Description
Technical Field
The invention relates to the technical field of electric power, in particular to a wiring clamp.
Background
The traditional resistance test clamp mainly has two forms, the first form is that a current clamp and a voltage clamp are separately designed, each clamp is provided with a clamp, when a conductor loop resistance is tested, the current clamp and the voltage clamp are clamped on a conductor respectively, the design is simpler, but the field use is troublesome, the current clamp and the voltage clamp cannot be used when meeting some GIS with denser design, if the ground knife lead wire of some GIS is shorter, two groups of wiring clamps cannot be connected to the lead wire at the same time, and the resistance test cannot be carried out; the second is that the current clamp and the voltage clamp are designed on the same terminal clamp, two oppositely arranged chucks on the terminal clamp are respectively a current clamp part and a voltage clamp part, the design does not consider that a non-test loop of a loop resistance tester can be calculated without disconnecting, and the current package voltage principle in direct current resistance/loop resistance four-end method measurement cannot be completely met, so that the measured loop resistance is inaccurate. That is, the conventional wire clamp for measuring the direct current resistance or the loop resistance is not completely suitable for all devices, and cannot be performed strictly according to the direct current resistance/loop resistance measurement criterion "current packet voltage", and meanwhile, when the reserved contact area is small, the wire clamp cannot be clamped to a proper measurement position, so that measurement deviation or measurement difficulty occurs.
Disclosure of Invention
Based on the above, the invention provides a wire clamp, which overcomes the defects that the wire clamp used for measuring the direct current resistance or the loop resistance in the prior art is not completely suitable for all equipment, can not be carried out according to the direct current resistance/loop resistance measurement rule of 'current package voltage', and can not clamp the wire clamp to a proper measurement position when the reserved contact area is small, so that the measurement deviation is caused or the measurement is difficult, and the like.
The technical scheme is as follows:
a wire connecting clamp comprising:
the first clamping arm comprises a first handle, a first chuck connected with the first handle, and a first current contact finger and a first voltage contact finger which are arranged on the first chuck at intervals; a first insulating isolator is arranged between the first current contact finger and the first voltage contact finger;
the second clamping arm comprises a second handle, a second chuck connected with the second handle, and a second current contact finger and a second voltage contact finger which are arranged on the second chuck at intervals; the second current contact finger is arranged corresponding to the first current contact finger, and the second voltage contact finger is arranged corresponding to the first voltage contact finger; a second insulating isolator is arranged between the second current contact finger and the second voltage contact finger;
the first clamping arm is rotatably connected with the second clamping arm, and a rotating connection point of the first clamping arm is positioned at the connection position of the first handle and the first chuck; and the rotating connection point of the second clamping arm is positioned at the connection position of the second handle and the second chuck.
The wiring clamp of the technical scheme can enable the non-disconnecting measurement loop resistance meter to be suitable for different field environments, can strictly meet the current package voltage rule in loop resistance measurement, and can also carry out loop resistance test when the field reserved outgoing line is short.
Specifically, this technical scheme's wiring pincers with current clamp and voltage clamp as an organic whole, same wiring pincers can act as current clamp and voltage clamp promptly to reduce the use quantity of wiring pincers, when the contact site area of reserving less, can make the wiring clamp to suitable measuring position, guarantee to measure and go on smoothly. For example, when the ground knife outgoing line of some GIS is short, the wiring requirement of the wiring pliers can be met. In addition, according to the technical scheme, the first chuck and the second chuck are respectively provided with the current contact fingers and the voltage contact fingers, so that the final wiring can meet the direct current resistance/loop resistance measurement criterion of current package voltage through a standard wiring mode, wherein the current package voltage means that the voltage contact fingers are arranged on the inner side of the loop, and the current contact fingers are arranged on the outer side of the loop. The first insulating isolator isolates the first current contact finger from the first voltage contact finger, and the first current contact finger and the first voltage contact finger are prevented from being influenced with each other; in a similar way, the second current contact finger and the second voltage contact finger are isolated by the second insulating isolation piece, and the second current contact finger and the second voltage contact finger are prevented from being influenced mutually. The first insulating isolation part and the second insulating isolation part can meet a 1000V-1min withstand voltage test, and the heat resistance grade is F grade or above. In the withstand voltage test, voltage is respectively applied to the current contact fingers and the voltage contact fingers of the two chucks.
Because first arm lock and second arm lock rotate to be connected, so when using this technical scheme's wiring pincers, through holding first handle and second handle, control opening and shutting between first chuck and the second chuck to the realization is to the tight and loosen of conductor, accomplishes the wiring, realizes the resistance measurement.
In one embodiment, the wiring clamp further comprises a voltage line, the voltage line is connected with both the first voltage contact finger and the second voltage contact finger; the wiring clamp further comprises a current wire, and the current wire is connected with the first current contact finger and the second current contact finger.
In one embodiment, the first handle is a hollow handle, and the voltage line is arranged in the first handle in a penetrating way; and/or the second handle is a hollow handle, and the current wire is arranged in the second handle in a penetrating way.
In one embodiment, the first voltage contact finger is arranged in parallel with the first current contact finger; the second voltage contact finger and the second current contact finger are arranged in parallel.
In one embodiment, the cross-sectional area of the first current contact finger is greater than the cross-sectional area of the first voltage contact finger; and/or the cross-sectional area of the second current contact finger is greater than the cross-sectional area of the second voltage contact finger.
In one embodiment, the first chuck is provided with a first embedding groove for embedding the first current contact finger and the first voltage contact finger; and/or a second embedding groove used for embedding the second current contact finger and the second voltage contact finger is arranged on the second chuck.
In one embodiment, the first chuck is a shell structure provided with a first accommodating cavity, the first embedding groove is a through groove formed in the shell structure, and a first elastic piece connected with the first current contact finger and the first voltage contact finger is arranged in the first accommodating cavity; and/or the second chuck is a shell structure provided with a second containing cavity, the second embedding groove is a through groove formed in the shell structure, and a second elastic piece connected with the second current contact finger and the second voltage contact finger is arranged in the second containing cavity.
In one embodiment, the first current contact finger is provided with a first limiting part which is matched with the first chuck and used for limiting the compression range of the first current contact finger; and/or a second limiting piece which is matched with the first chuck and used for limiting the compression direction of the first voltage contact finger is arranged on the first voltage contact finger; and/or a third limiting part which is matched with the second chuck and used for limiting the compression range of the second current contact finger is arranged on the second current contact finger; and/or a fourth limiting part which is matched with the second chuck and used for limiting the compression range of the second voltage contact finger is arranged on the second voltage contact finger.
In one embodiment, a first concave part is arranged on the first current contact finger, and a second concave part corresponding to the first concave part is arranged on the second current contact finger; and/or a third concave part is arranged on the first voltage contact finger, and a fourth concave part corresponding to the third concave part is arranged on the second voltage contact finger.
In one embodiment, the first current contact finger and the second current contact finger are both tooth-like structures; and/or the first voltage contact finger and the second voltage contact finger are both tooth-shaped structures.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention.
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a wire connecting clamp according to an embodiment of the present invention;
FIG. 2 is a schematic view of a clamping surface of the first chuck of FIG. 1;
fig. 3 is a side view of the first chuck of fig. 1.
Description of reference numerals:
10. a first clamp arm; 11. a first handle; 12. a first chuck; 13. a first current contact finger; 14. a first voltage contact finger; 15. a first insulating spacer; 20. a second clamp arm; 21. a second handle; 22. a second chuck; 30. a voltage line; 40. a current line; 50. a first elastic member; 60. a second elastic member; 70. a first limiting member.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.
A wire connecting clamp as shown in figures 1 to 3, comprising: the first clamping arm 10 comprises a first handle 11, a first chuck 12 connected with the first handle 11, and a first current contact finger 13 and a first voltage contact finger 14 which are arranged on the first chuck 12 at intervals; a first insulating isolator 15 is arranged between the first current contact finger 13 and the first voltage contact finger 14; the second clamping arm 20 comprises a second handle 21, a second clamping head 22 connected with the second handle 21, and a second current contact finger and a second voltage contact finger which are arranged on the second clamping head 22 at intervals; the second current contact finger and the second voltage contact finger are respectively arranged corresponding to the first current contact finger 13 and the first voltage contact finger 14; a second insulating isolator is arranged between the second current contact finger and the second voltage contact finger; the first clamping arm 10 and the second clamping arm 20 are rotatably connected, and the rotational connection point of the first clamping arm 10 is located at the connection position of the first handle 11 and the first chuck 12; the pivot connection point of the second clamping arm 20 is located at the connection point of the second handle 21 and the second clamping head 22.
The wiring clamp of the embodiment can enable the non-disconnecting measurement loop resistance meter to be suitable for different field environments, can strictly meet the wiring rule of 'current package voltage' in loop resistance measurement, and can also carry out loop resistance test when the reserved outgoing line on the field is short.
Specifically, the wiring clamp of this embodiment closes current clamp and voltage clamp as an organic whole, and same wiring clamp can act as current clamp and voltage clamp promptly to reduce the use quantity of wiring clamp, when the contact site area of reserving less, can make the wiring clamp to suitable measuring position, guarantee to measure and go on smoothly. For example, when the ground knife outgoing line of some GIS is short, the wiring requirement of the wiring pliers can be met. In addition, in the present embodiment, the current contact fingers and the voltage contact fingers are respectively disposed on the first chuck 12 and the second chuck 22, so that the final connection can satisfy the dc resistance/loop resistance measurement criterion "current packet voltage" by the standard connection method, wherein the "current packet voltage" means that the voltage contact fingers are on the inner side of the loop and the current contact fingers are on the outer side of the loop. The first insulating isolator 15 isolates the first current contact finger 13 from the first voltage contact finger 14, and the first current contact finger 13 and the first voltage contact finger 14 are prevented from being influenced by each other; in a similar way, the second current contact finger and the second voltage contact finger are isolated by the second insulating isolation piece, and the second current contact finger and the second voltage contact finger are prevented from being influenced mutually. The first insulating isolation part 15 and the second insulating isolation part can meet the 1000V-1min withstand voltage test, and the heat resistance grade is F grade or above. In the withstand voltage test, voltage is respectively applied to the current contact fingers and the voltage contact fingers of the two chucks.
Since the first clamping arm 10 and the second clamping arm 20 are rotatably connected, when the wiring clamp of the present embodiment is used, the first handle 11 and the second handle 21 are held by hands, and the opening and closing between the first chuck 12 and the second chuck 22 are controlled, so that the conductor is clamped and loosened, the wiring is completed, and the resistance measurement is realized. Specifically, the first clip arm 10 of the present embodiment is hinged to the second clip arm 20.
The first handle 11, the first chuck 12, the second handle 21 and the second chuck 22 of the present embodiment all adopt insulating materials, which guarantees the personal safety of operators, can be made of insulating materials such as plastics, and is not only low in cost, but also light in weight. In other embodiments, the first handle 11, the first chuck 12, the second handle 21, and the second chuck 22 may be wrapped with an insulating material to form an insulator.
The wiring clamp of the present embodiment further includes a voltage line 30, and the voltage line 30 is connected to both the first voltage contact finger 14 and the second voltage contact finger; the wiring clamp further comprises a current wire 40, and the current wire 40 is connected with the first current contact finger 13 and the second current contact finger. That is, the first voltage contact finger 14 and the second voltage contact finger in the present embodiment are connected to an external measuring instrument through the voltage line 30 to perform measurement, and the first current contact finger 13 and the second current contact finger are connected to the external measuring instrument through the current line 40 to function as conduction current.
In this embodiment, the first handle 11 is a hollow handle, and the voltage line 30 is inserted into the first handle 11; the second handle 21 is a hollow handle, and the current line 40 is arranged in the second handle 21 in a penetrating manner. Through the arrangement of the hollow structure, the voltage wire 30 and the current wire 40 can be prevented from being exposed, so that the wiring clamp is more convenient to arrange.
In this embodiment, the first voltage contact finger 14 and the first current contact finger 13 are arranged in parallel; the second voltage contact finger and the second current contact finger are arranged in parallel, the second voltage contact finger corresponds to the first voltage contact finger 14, and the second current contact finger corresponds to the first current contact finger 13. By arranging the wiring clamps in parallel, the wiring method of the current package voltage criterion can be realized more easily when the wiring clamps clamp the conductor. In this embodiment, the first chuck 12 and the second chuck 13 are symmetrically disposed, the first current contact finger 13 is symmetric to the second current contact finger, and the first voltage contact finger 14 is symmetric to the second voltage contact finger.
Furthermore, in order to better engage the conductor when clamping the conductor, the first current contact finger 13 and the second current contact finger are arranged symmetrically, and the first voltage contact finger 14 and the second voltage contact finger are arranged symmetrically.
In order to make the current fingers better contact the conductor, on the one hand, and to make the current fingers better conduct current, in particular, high currents, the cross-sectional area of the first current fingers 13 is larger than the cross-sectional area of the first voltage fingers 14 in this embodiment; correspondingly, the cross-sectional area of the second current contact finger is larger than the cross-sectional area of the second voltage contact finger. Namely, the current contact fingers need to play a role of conducting current, and the voltage contact fingers only play a role of measuring, so that the cross-sectional area of the current contact fingers is larger than that of the voltage contact fingers, and through the different arrangement of the cross-sectional areas of the current contact fingers and the voltage contact fingers, the clamping surfaces of the first chuck 12 and the second chuck 22 are effectively utilized, and the occupation ratio of the overcurrent contact fingers and the voltage contact fingers is reasonably distributed.
Specifically, the first current contact finger 13, the first voltage contact finger 14, the second current contact finger and the second voltage contact finger of the present embodiment are all distributed in a bar shape or in a rectangular shape, the lengths of the first current contact finger 13, the first voltage contact finger 14, the second current contact finger and the second voltage contact finger are all the same, the width of the first current contact finger 13 is greater than the width of the first voltage contact finger 14, and similarly, the width of the second current contact finger is greater than the width of the second voltage contact finger.
Specifically, in the present embodiment, the first chuck 12 is provided with a first embedding groove for embedding the first current contact finger 13 and the first voltage contact finger 14; and a second embedding groove for embedding the second current contact finger and the second voltage contact finger is formed in the second chuck 22. That is, the current fingers and the voltage fingers of the present embodiment are mounted on the first and second chucks 12 and 22 by means of an insert. In other embodiments, current and voltage fingers may be welded or bolted or otherwise attached to the first and second clamps 12, 22.
In order to make the current contact fingers and the voltage contact fingers contact with the conductor better, adapt to different contact part shapes, expand the application range of the jointing clamp of the embodiment, and enhance the universality, the first chuck 12 of the embodiment is a shell structure provided with a first accommodating cavity, the first embedding groove is a through groove arranged on the shell structure, and a first elastic piece 50 connected with the first current contact finger 13 and the first voltage contact finger 14 is arranged in the first accommodating cavity; that is, the first elastic member 50 is arranged to support the back of the first current contact finger 13 and the first voltage contact finger 14, and when the touch screen is used, the first current contact finger 13 and the first voltage contact finger 14 generate a certain amount of compression to the first elastic member 50 according to the shape of the contact portion to adapt to the shape of the contact portion, so that fine adjustment is performed, and the first current contact finger 13 and the first voltage contact finger 14 can be better in contact with the wiring point. The first elastic member 50 of the present embodiment is a plurality of first return springs and a plurality of second return springs respectively connected to the first current contact finger 13 and the first voltage contact finger 14, the plurality of first return springs are arranged at intervals along the length direction of the first current contact finger 13, the plurality of second return springs are arranged at intervals along the length direction of the first voltage contact finger 14. The back of the first current contact finger 13 and the back of the first voltage contact finger 14 are opposite to the clamping surfaces of the first current contact finger 13 and the first voltage contact finger 14.
Similarly, the second chuck 22 is a shell structure provided with a second accommodating cavity, the second embedding groove is a through groove formed in the shell structure, a second elastic member 60 connected with the second current contact finger and the second voltage contact finger is arranged in the second accommodating cavity, and the second elastic member 60 is a return spring.
Further, since the first chuck 12 of the present embodiment is an insulating housing, when the first current contact finger 13 and the first voltage contact finger 14 are inserted with a space therebetween in an insertion manner, a region of the first chuck 12 located between the first current contact finger 13 and the first voltage contact finger 14 serves as a first insulating spacer 15 to separate the first current contact finger 13 from the first voltage contact finger 14. In other embodiments, an additional insulator structure may be provided to isolate the first current finger 13 from the first voltage finger 14.
Similarly, the second clip 22 of the present embodiment is an insulating housing, and the region of the second clip 22 between the second current contact finger and the second voltage contact finger serves as a second insulating spacer.
In addition, in order to better connect the voltage line 30 and the current line 40 to the voltage contact finger and the current contact finger respectively, the first chuck 12 and the first handle 21 of the present embodiment are both hollow and communicated, the second chuck 22 and the second handle 21 are both hollow and communicated, and the first clamping arm 10 and the second clamping arm 20 are communicated with each other at the rotating connection position of the first clamping arm 10 and the second clamping arm 20, so that the voltage line 30 and the current line 40 can be connected to the voltage contact finger and the current contact finger in the first chuck 12 and the second chuck 22 respectively.
The first current contact finger 13 is provided with a first limiting member 70, which is matched with the first chuck 12 and used for limiting the compression range of the first current contact finger 13, that is, the compression amount of the first elastic member 50 is limited to ensure that the first current contact finger 13 is within the compression range in normal use. Specifically, the first limiting member 70 of the present embodiment may be a limiting post disposed on a side wall of the first current contact finger 13, the first chuck 12 is provided with a limiting groove engaged with the limiting post, the limiting post slides in the limiting groove, and the length of the limiting groove limits a stroke of the limiting post, so that the compression amount of the first elastic member 50 is limited.
Similarly, a second limiting member, which is matched with the first chuck 12 and used for limiting the compression direction of the first voltage contact finger 14, is arranged on the first voltage contact finger 14; the second current contact finger is provided with a third limiting part which is matched with the second chuck 22 and used for limiting the compression range of the second current contact finger; and a fourth limiting part which is matched with the second chuck 22 and used for limiting the compression range of the second voltage contact finger is arranged on the second voltage contact finger. The second, third and fourth limiting members are the same as or similar to the first limiting member 70.
In order to better contact with a conductor to be tested, a first concave part is arranged on the first current contact finger 13, and a second concave part corresponding to the first concave part is arranged on the second current contact finger; the first recess and the second recess are arranged opposite to each other, so that a receiving part is formed for better engagement with the conductor. The first concave part and the second concave part are both arranged in a concave arc shape.
Similarly, a third concave portion is arranged on the first voltage contact finger 14, a fourth concave portion corresponding to the third concave portion is arranged on the second voltage contact finger, and the third concave portion and the fourth concave portion are both arranged in a concave arc shape.
In this embodiment, the first current contact finger 13 and the second current contact finger are both in a tooth-shaped structure, so that when a conductor is clamped, the friction between the conductor and the first current contact finger 13 can be increased, and the clamping effect can be ensured. Similarly, the first voltage contact finger 14 and the second voltage contact finger are both tooth-shaped structures. The tooth-shaped structure can be triangular teeth, helical teeth or any one tooth-shaped structure.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.
Claims (10)
1. A wire connecting clamp, comprising:
the first clamping arm comprises a first handle, a first chuck connected with the first handle, and a first current contact finger and a first voltage contact finger which are arranged on the first chuck at intervals; a first insulating isolator is arranged between the first current contact finger and the first voltage contact finger;
the second clamping arm comprises a second handle, a second chuck connected with the second handle, and a second current contact finger and a second voltage contact finger which are arranged on the second chuck at intervals; the second current contact finger is arranged corresponding to the first current contact finger, and the second voltage contact finger is arranged corresponding to the first voltage contact finger; a second insulating isolator is arranged between the second current contact finger and the second voltage contact finger;
the first clamping arm is rotatably connected with the second clamping arm, and a rotating connection point of the first clamping arm is positioned at the connection position of the first handle and the first chuck; and the rotating connection point of the second clamping arm is positioned at the connection position of the second handle and the second chuck.
2. The terminal block of claim 1, further comprising a voltage line, the voltage line being connected to both the first and second voltage fingers; the wiring clamp further comprises a current wire, and the current wire is connected with the first current contact finger and the second current contact finger.
3. The wire clamp of claim 2, wherein the first handle is a hollow handle, and the voltage wire is inserted into the first handle; and/or the second handle is a hollow handle, and the current wire is arranged in the second handle in a penetrating way.
4. A connector clamp according to claim 1, wherein the first voltage contact finger is juxtaposed with the first current contact finger; the second voltage contact finger and the second current contact finger are arranged in parallel.
5. A connector lug according to claim 1, wherein the cross-sectional area of the first current contact finger is greater than the cross-sectional area of the first voltage contact finger; and/or the cross-sectional area of the second current contact finger is greater than the cross-sectional area of the second voltage contact finger.
6. The wire connecting clamp as claimed in claim 1, wherein the first clamping head is provided with a first embedding groove for embedding the first current contact finger and the first voltage contact finger; and/or a second embedding groove used for embedding the second current contact finger and the second voltage contact finger is arranged on the second chuck.
7. The wire connecting clamp according to claim 6, wherein the first clamping head is a housing structure provided with a first accommodating cavity, the first embedding groove is a through groove formed in the housing structure, and a first elastic member connected with the first current contact finger and the first voltage contact finger is arranged in the first accommodating cavity; and/or the second chuck is a shell structure provided with a second containing cavity, the second embedding groove is a through groove formed in the shell structure, and a second elastic piece connected with the second current contact finger and the second voltage contact finger is arranged in the second containing cavity.
8. The wire connector clamp according to claim 7, wherein the first current contact finger is provided with a first stopper cooperating with the first collet and limiting a compression range of the first current contact finger; and/or a second limiting piece which is matched with the first chuck and used for limiting the compression direction of the first voltage contact finger is arranged on the first voltage contact finger; and/or a third limiting part which is matched with the second chuck and used for limiting the compression range of the second current contact finger is arranged on the second current contact finger; and/or a fourth limiting part which is matched with the second chuck and used for limiting the compression range of the second voltage contact finger is arranged on the second voltage contact finger.
9. A jointing clamp as claimed in any one of claims 1 to 8, wherein the first current contact finger is provided with a first recess and the second current contact finger is provided with a second recess corresponding to the first recess; and/or a third concave part is arranged on the first voltage contact finger, and a fourth concave part corresponding to the third concave part is arranged on the second voltage contact finger.
10. A jointing clamp as claimed in any one of claims 1 to 8, in which the first current contact finger and the second current contact finger are both of toothed configuration; and/or the first voltage contact finger and the second voltage contact finger are both tooth-shaped structures.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113138301A (en) * | 2021-04-21 | 2021-07-20 | 贵州电网有限责任公司 | Special high-altitude wiring clamp for loop resistance test |
| CN114324997A (en) * | 2021-12-28 | 2022-04-12 | 广东电网有限责任公司 | Loop resistance testing device |
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| CN113138301A (en) * | 2021-04-21 | 2021-07-20 | 贵州电网有限责任公司 | Special high-altitude wiring clamp for loop resistance test |
| CN114324997A (en) * | 2021-12-28 | 2022-04-12 | 广东电网有限责任公司 | Loop resistance testing device |
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