CN219142957U - Conductor direct current resistance test fixture - Google Patents

Abstract

The application relates to the technical field of conductor tests, especially, relate to a conductor direct current resistance test fixture, including support and two sets of grip slipper assemblies, be provided with the track of length between 1.4-1.6 meters on the support, wherein a set of grip slipper assembly fixed mounting just is located orbital one end on the support, and another set of grip slipper assembly sliding fit is fixed in the track on the track and through the retaining member, and two sets of grip slipper assemblies are used for the both ends of centre gripping conductor respectively and are used for realizing electrically conductive connecting conductor, still are provided with conductor temperature detection unit and humiture display element on the support, still are provided with length detection unit on the support. The conductor direct current resistance test clamp can be applied to short sample conductors with the length smaller than one meter, and can also be used for the direct current resistance test of sample conductors with the normal length.

Description

Conductor direct current resistance test fixture

Technical Field

The application relates to the technical field of conductor tests, in particular to a conductor direct current resistance test clamp.

Background

The electric wires and cables are widely applied to various fields of national economy construction, particularly including construction engineering and electrical equipment in various fields of power grid construction, urban network transformation, new energy industry, rail traffic, aerospace, ocean platform, industrial and mining production, building and electrical and the like, and are classified as 'blood vessels' and 'nerves' of national economy, the quality of the products is related to safe and stable operation of electric systems and electric equipment, and the importance of the products is self-evident.

The conductor resistance is used as an important electrical safety parameter of the wire and cable product, directly reflects the conductivity and information conveying capacity of the wire and cable product, is too high, and is easy to generate heat in the long-time operation process, so that the conveyed electric energy is lost, and potential safety hazards can be generated due to overheating of the cable. It is also the main basis for determining the compliance of the nominal sectional area of the conductor of the wire and cable product. Therefore, as a key safety project, conductor resistance measurement is also a necessary inspection project for various quality spot checks of wire and cable products.

Currently, a method for measuring the conductor resistance of an electric wire mainly depends on GB/T3048.4-2007 electric wire and cable electrical property test method part 4, namely a conductor direct current resistance test, wherein the test method requires that the length of a sample is not less than 1 meter, so that the method cannot be used for a conductor resistance assessment standard of a short sample of the electric wire and cable with the length shorter than 1 meter.

However, in practical applications, there are a large number of wire and cable applications with effective lengths shorter than 1 meter, for example, the design length of internal and external wiring of the whole electric appliance is shorter than 1 meter, even part of the national standards of products, and the requirement for installing small-length wiring is clearly specified for safety reasons, for example, in GB/T4706.19-2008 special requirements for safety liquid heaters for household and similar appliances, that for liquid heaters such as electric kettles, the length of the power line cannot exceed seventy five centimeters unless it is a spiral power line, and the conductor cross-sectional area should meet the corresponding power requirement. The method for checking the sectional area through the conductor resistance test can only aim at the sample with the length of more than one meter, so that the detection of the sectional area of the power line in the field of electric appliances is controversial all the time. Therefore, the problem of testing the conductor resistance of the short-sample wire and cable is urgently needed to be solved.

For example, the chinese patent application No. 201210401556.2 discloses a cable conductor dc resistance testing device and testing method, which adopts a method of increasing the length of a tested sample and layering current input to test the dc resistance of the conductor, reducing the influence of contact resistance on the test result, and improving the accuracy of the test.

Similar to the common conductor direct current resistance test device, each layer of conductor needs to be stripped layer by layer to expose, the treatment process is complex and is easy to damage the inner layer conductor, certain difficulty exists in actual operation, in addition, the layered current end needs to prolong the conductor lengths at two ends, and the layered current end is not suitable for cable samples with shorter sample feeding length, is only suitable for samples with sample lengths of more than 1 meter, and cannot be matched and applied to short sample conductor direct current resistance tests, so that the improvement is needed.

Disclosure of Invention

The application provides a conductor direct current resistance test fixture to improve following technical problem: the common conductor direct current resistance test device is mainly only suitable for samples with the length of more than 1 meter, and cannot be applied to short sample conductor direct current resistance tests in a matching way.

The application provides a conductor direct current resistance test fixture, adopts following technical scheme:

the utility model provides a conductor direct current resistance test anchor clamps, includes support and two sets of grip slipper assemblies, be provided with the length on the support and be between 1.4-1.6 meters track, one of them a set of grip slipper assembly fixed mounting in on the support and be located orbital one end, another set of grip slipper assembly sliding fit in on the track and be fixed in through the retaining member the track, two sets of the grip slipper assembly is used for the both ends of centre gripping conductor respectively and is used for realizing electrically conductive connecting conductor, still be provided with conductor temperature detection unit and humiture display element on the support, still be provided with length detection unit on the support.

Through adopting above-mentioned technical scheme, length detection unit is used for detecting the length of conductor, temperature and humidity display unit is used for showing the conductor temperature and detects and show ambient humidity, and conductor temperature detection unit is used for closely measuring the temperature near the conductor, can unscrew the retaining member according to the approximate length of short conductor simultaneously, then adjust the position of one of them grip slipper assembly, press from both sides the both ends of conductor tightly through two sets of grip slipper assemblies, and realize the purpose of electrically conductive connection conductor, because orbital length is about 1.5 meters, the maximum distance between two sets of grip slipper assemblies is approximately 1 meter, therefore the test fixture of above-mentioned design, both can be applied to the short sample conductor that length is less than 1 meter, also can be used to normal length sample conductor direct current resistance test.

Optionally, the grip slipper assembly includes: base, fixed electric wood piece and removal electric wood piece, fixed electric wood piece fixed mounting in on the base, remove electric wood piece slidable mounting in on the base, fixed electric wood piece with all be provided with the clamping part that is used for the centre gripping conductor on the removal electric wood piece, be provided with on the base and order about the removal electric wood piece is close to or keeps away from the drive division of fixed electric wood piece, fixed electric wood piece with all be provided with knife tackle portion and wire post on the removal electric wood piece, knife tackle portion with wire post conductive connection.

Through adopting above-mentioned technical scheme, the grip slipper assembly of above-mentioned design, the structure is simpler, can change the position of removing the electrode wood piece through drive portion moreover as required, and then realize fine setting effect to adapt to the conductor test of various length.

Optionally, the clamping part includes screw rod, splint, butterfly nut and insulating piece, the screw rod is fixed in fixed electric wood piece or on the removal electric wood piece, the screw rod runs through splint, butterfly nut screw thread assemble in the screw rod, the insulating piece is fixed in splint are close to the one end of knife rest portion.

Through adopting above-mentioned technical scheme, the clamping part of above-mentioned design, simple structure screws butterfly nut, when making splint down motion, can the centre gripping fixed conductor, unscrews butterfly nut, when making splint up motion, can loosen the conductor, and the insulating piece can realize the purpose of centre gripping conductor with edge of a knife portion cooperation, is difficult for letting the user electrically conduct moreover, and the operation is safer, convenient.

Optionally, the driving part includes: the screw rod is rotationally assembled on the base, one end of the screw rod is rotationally connected to the movable electric wood block, and the crank is fixed to the other end of the screw rod.

Through adopting above-mentioned technical scheme, the drive division of above-mentioned design, simple structure can drive the lead screw and rotate when rotating the crank, and then order about to remove the electric wood piece round trip movement, and the operation is more convenient.

Optionally, a chute adapted to the track is provided on a side of the base away from the clamping portion.

Through adopting above-mentioned technical scheme, spout and track cooperation can make base and track coupling more stable.

Optionally, the conductor temperature detecting unit includes mounting bracket and temperature sensor, temperature sensor is on a parallel with the track, temperature sensor install in on the mounting bracket, the mounting bracket install in on the support and be located orbital mid portion.

Through adopting above-mentioned technical scheme, the conductor temperature detecting element of above-mentioned design, simple structure, the sensor position is parallel with the conductor, can make its and conductor between the distance be less than five centimetres as far as possible, and its testing result is closer to conductor self temperature, helps improving the test accuracy.

Optionally, the humiture display element includes box body, temperature display screen and electron hygrometer, the box body install in on the support, temperature display screen with the electron hygrometer all install in the box body, temperature display screen with the temperature sensor electricity is connected.

Through adopting above-mentioned technical scheme, the humiture display element of above-mentioned design, simple structure, and the person of facilitating the use reads data.

Optionally, the length detection unit includes grating chi body, grating chi display, grating chi gauge head and connecting piece, the grating chi gauge head passes through the connecting piece is fixed in sliding fit on the grip slipper assembly, the grating chi display install in sliding fit on the grip slipper assembly, the grating chi body install in on the support.

Through adopting above-mentioned technical scheme, the length detection unit of above-mentioned design, simple structure, the length result of measurement is more accurate, and grating chi display facilitates the user to read data moreover.

Optionally, the support includes bottom plate, two sets of landing legs and mounting, two sets of landing legs respectively rotate the assembly in the both ends bottom of bottom plate, the landing leg passes through the mounting is fixed in on the bottom plate.

Through adopting above-mentioned technical scheme, the stabilizer blade can shrink, because ordinary desktop height is 800mm high, and the test requires to be in the position more than 1000mm from ground high, rises the stabilizer blade when test table height is not enough to use the mounting to lock it, when test table height is higher than 1000mm, then fold the stabilizer blade and take up, and use the mounting to lock it, it is more convenient to use.

Optionally, the track is provided with three concave grooves for quick positioning of the clamping seat assembly for sliding assembly, and the three concave grooves are respectively used for measuring 0.25 meter, 0.5 meter and 0.75 meter samples.

By adopting the technical scheme, the positioning measurement test is more convenient and rapid, and the efficiency is higher.

In summary, the present application includes at least one of the following beneficial technical effects:

the length detection unit is used for detecting the length of a conductor, the temperature and humidity display unit is used for displaying the temperature of the conductor and detecting and displaying the ambient humidity, the conductor temperature detection unit is used for measuring the temperature near the conductor in a short distance, meanwhile, the locking piece can be unscrewed according to the approximate length of the conductor, then the position of one clamping seat assembly is adjusted, two ends of the conductor are clamped through two groups of clamping seat assemblies, the purpose of conducting connection of the conductor is achieved, and because the length of a track is about 1.5 meters, the maximum distance between the two groups of clamping seat assemblies is approximately 1 meter, the designed test fixture can be applied to short-sample conductors with the length of less than 1 meter, and can also be applied to direct-current resistance tests of normal-length sample conductors.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed 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 application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of a dc resistance test fixture for a conductor according to an embodiment of the present application.

Fig. 2 is a schematic structural diagram of a clamping seat assembly according to an embodiment of the present application.

Fig. 3 is a schematic structural diagram of a conductor temperature detection unit in the embodiment of the present application.

Fig. 4 is a schematic structural diagram of an environmental temperature and humidity detecting unit in an embodiment of the present application.

Reference numerals illustrate:

1. a bracket; 11. a bottom plate; 12. a support leg; 13. a fixing member; 2. a clamping seat assembly; 21. a base; 211. a chute; 22. fixing an electric wood block; 23. moving the electric wood block; 24. a clamping part; 241. a screw; 242. a clamping plate; 243. a butterfly nut; 244. an insulating block; 25. a driving section; 251. a screw rod; 252. a crank; 26. a knife opening; 27. a wire post; 3. a track; 4. a conductor temperature detection unit; 41. a mounting frame; 42. a temperature sensor; 5. a temperature and humidity display unit; 51. a case body; 52. a temperature display screen; 53. an electronic hygrometer; 6. a length detection unit; 61. a grating ruler body; 62. a grating scale display; 63. a grating ruler measuring head; 64. a connecting piece; 7. a locking piece.

Detailed Description

In order to make the technical problems, technical schemes and beneficial effects to be solved by the present application more clear, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application.

It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present application and simplify description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be configured and operated in a particular orientation, and therefore should not be construed as limiting the present application.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

The present application is described in further detail below in conjunction with figures 1-4.

The embodiment of the application discloses a conductor direct current resistance test fixture. Referring to fig. 1, a direct current resistance test fixture for conductors comprises a bracket 1 and two groups of clamping seat assemblies 2, wherein a track 3 with the length of 1.4-1.6 meters is arranged on the bracket 1, one group of clamping seat assemblies 2 is fixedly installed on the bracket 1 and positioned at one end of the track 3, the other group of clamping seat assemblies 2 are slidingly assembled on the track 3 and are fixed on the track 3 through a locking piece 7, the locking piece 7 is specifically a bolt with a plastic cap at the cap part, the two groups of clamping seat assemblies 2 are respectively used for clamping two ends of a conductor and are used for realizing conductive connection conductors, a conductor temperature detection unit 4 and a temperature and humidity display unit 5 are further arranged on the bracket 1, and a length detection unit 6 is further arranged on the bracket 1.

The length detection unit 6 comprises a grating ruler body 61, a grating ruler display 62, a grating ruler measuring head 63 and a connecting piece 64, wherein the connecting piece 64 is specifically a bent steel plate fixed through a screw, the grating ruler measuring head 63 is fixed on a clamping seat assembly 2 assembled in a sliding manner through the connecting piece 64, the grating ruler display 62 is mounted on the clamping seat assembly 2 assembled in the sliding manner, and the grating ruler body 61 is mounted on the support 1. The length detection unit 6 designed in the above way has a simple structure, the measured length result is more accurate, and the grating ruler display 62 is convenient for a user to read data.

The bracket 1 comprises a bottom plate 11, two groups of supporting legs 12 and a fixing piece 13, wherein the supporting legs 12 are H-shaped, the fixing piece 13 is specifically a bolt with a plastic cap at the cap part, the two groups of supporting legs 12 are respectively assembled at the bottoms of the two ends of the bottom plate 11 in a rotating way, and the supporting legs 12 are fixed on the bottom plate 11 through the fixing piece 13. The stabilizer blade can shrink, because ordinary desktop height is 800mm high, and the test requires to be in the position more than 1000mm from ground high, rises the stabilizer blade when test table height is not enough to use mounting 13 to lock it, when test table height is higher than 1000mm, then fold the stabilizer blade and take up, and use mounting 13 to lock it, it is more convenient to use.

Referring to fig. 1 and 2, the clamp holder assembly 2 includes: the electric wire cutting machine comprises a base 21, a fixed electric wire block 22 and a movable electric wire block 23, wherein the fixed electric wire block 22 is fixedly arranged on the base 21, the movable electric wire block 23 is slidably arranged on the base 21, clamping parts 24 for clamping conductors are arranged on the fixed electric wire block 22 and the movable electric wire block 23, a driving part 25 for driving the movable electric wire block 23 to be close to or far away from the fixed electric wire block 22 is arranged on the base 21, knife edge parts 26 and wire columns 27 are arranged on the fixed electric wire block 22 and the movable electric wire block 23, and the knife edge parts 26 are in conductive connection with the wire columns 27.

The clamping seat assembly 2 with the design has a simple structure, and can change the position of the movable electric wood block 23 through the driving part 25 according to the requirement, so as to realize the fine adjustment effect and adapt to conductor tests with various lengths.

The clamping portion 24 includes a screw 241, a clamping plate 242, a wing nut 243 and an insulating block 244, the screw 241 is fixed on the fixed electric wood block 22 or the movable electric wood block 23, the screw 241 penetrates the clamping plate 242, the wing nut 243 is assembled on the screw 241 in a threaded manner, and the insulating block 244 is fixed on one end of the clamping plate 242 adjacent to the knife opening portion 26.

The clamping part 24 with the design has a simple structure, the butterfly nut 243 is screwed tightly, the clamping plate 242 can clamp and fix a conductor when moving downwards, the butterfly nut 243 is unscrewed, the conductor can be loosened when the clamping plate 242 moves upwards, and the insulating block 244 can be matched with the knife edge part 26 to realize the purpose of clamping the conductor, so that the operation is safer and more convenient.

The driving unit 25 includes: the screw rod 251 and the crank 252, the screw rod 251 is rotatably assembled on the base 21, one end of the screw rod 251 is rotatably connected to the movable bakelite block 23, and the crank 252 is fixed on the other end of the screw rod 251. The driving part 25 with the design has a simple structure, and can drive the screw rod 251 to rotate when the crank 252 is rotated, so as to drive the movable electric wood block 23 to move back and forth, and the operation is convenient.

The base 21 is provided with the spout 211 that is fit with track 3 on the side that keeps away from clamping part 24, and spout 211 cooperates with track 3, can make base 21 and track 3 be connected more stably.

The rail 2 is provided with three concave grooves for rapidly positioning the clamping seat assembly 2 in sliding assembly, and the three concave grooves are respectively used for correspondingly measuring samples of 0.25 meter, 0.5 meter and 0.75 meter. By adopting the technical scheme, the positioning measurement test is more convenient and rapid, and the efficiency is higher.

Referring to fig. 1 and 3, the conductor temperature detecting unit 4 includes a mounting frame 41 and a temperature sensor 42, the mounting frame 41 includes two sets of hinge structures which are foldable, the temperature sensor 42 is disposed between the two sets of hinge structures, the temperature sensor 42 is parallel to the rail 3, the temperature sensor 42 is mounted on the mounting frame 41, and the mounting frame 41 is mounted on the bracket 1 and is located at a middle portion of the rail 3. The conductor temperature detection unit 4 with the design has a simple structure, the position of the temperature sensor 42 is parallel to the conductor, the distance between the temperature sensor and the conductor is smaller than five centimeters, the detection result is closer to the temperature of the conductor, and the improvement of the test precision is facilitated.

Referring to fig. 1 and 4, the environmental temperature and humidity detecting unit 5 includes a case 51, a display screen 52 and an electronic hygrometer 53, the case 51 is mounted on the bracket 1, the temperature display screen 52 and the electronic hygrometer 53 are both mounted in the case 51, and the temperature display screen 52 is electrically connected to the temperature sensor 42. The environmental temperature and humidity detection unit 5 with the design is simple in structure and convenient for a user to read data.

The beneficial technical effects of the conductor direct current resistance test clamp of the embodiment of the application are approximately as follows:

the length detection unit 6 is used for detecting the length of a conductor, the temperature and humidity display unit 5 is used for displaying the temperature of the conductor and detecting and displaying the ambient humidity, the conductor temperature detection unit 4 is used for measuring the temperature near the conductor in a short distance, meanwhile, the locking piece 7 can be unscrewed according to the approximate length of the conductor, then the position of one clamping seat assembly 2 is adjusted, two ends of the conductor are clamped through two groups of clamping seat assemblies 2, the purpose of conducting the conductor is achieved, and the maximum distance between the two groups of clamping seat assemblies 2 is approximately 1 meter because the length of the track 3 is approximately 1.5 meters, so that the designed test fixture can be applied to short sample conductors with the length of less than 1 meter and can also be applied to direct current resistance tests of normal length sample conductors.

The foregoing description of the preferred embodiments of the present utility model is not intended to limit the utility model to the particular forms disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the utility model.

Claims (10)

1. The utility model provides a conductor direct current resistance test anchor clamps, its characterized in that, includes support (1) and two sets of grip slipper assembly (2), be provided with track (3) of length between 1.4-1.6 meters on support (1), one of them set of grip slipper assembly (2) install in on support (1) and be located the one end of track (3), another set of grip slipper assembly (2) sliding fit in on track (3) and be fixed in through retaining member (7) track (3), two sets of grip slipper assembly (2) are used for the both ends of centre gripping conductor respectively and are used for realizing electrically conductive connection conductor, still be provided with conductor temperature detection unit (4) and humiture display element (5) on support (1), still be provided with length detection unit (6) on support (1).

2. A conductor direct current resistance test fixture according to claim 1, characterized in that the clamping seat assembly (2) comprises: base (21), fixed electric wood piece (22) and removal electric wood piece (23), fixed electric wood piece (22) fixed mounting in on base (21), remove electric wood piece (23) slidable mounting in on base (21), fixed electric wood piece (22) with all be provided with clamping part (24) that are used for the centre gripping conductor on removing electric wood piece (23), be provided with on base (21) and order about removal electric wood piece (23) are close to or keep away from drive part (25) of fixed electric wood piece (22), fixed electric wood piece (22) with all be provided with knife edge portion (26) and wire post (27) on removing electric wood piece (23), knife edge portion (26) with wire post (27) conductive connection.

3. The direct current resistance test fixture for conductors according to claim 2, wherein the clamping portion (24) comprises a screw (241), a clamping plate (242), a wing nut (243) and an insulating block (244), the screw (241) is fixed on the fixed electric wood block (22) or the movable electric wood block (23), the screw (241) penetrates through the clamping plate (242), the wing nut (243) is assembled on the screw (241) in a threaded manner, and the insulating block (244) is fixed on one end of the clamping plate (242) adjacent to the knife edge portion (26).

4. A conductor direct current resistance test fixture according to claim 2, wherein said driving portion (25) comprises: the screw rod (251) and the crank (252), wherein the screw rod (251) is rotatably assembled on the base (21), one end of the screw rod (251) is rotatably connected to the movable bakelite block (23), and the crank (252) is fixed to the other end of the screw rod (251).

5. A conductor direct current resistance test fixture according to claim 2, characterized in that the side of the base (21) remote from the clamping part (24) is provided with a chute (211) adapted to the track (3).

6. The conductor direct current resistance test fixture according to claim 1, wherein the conductor temperature detection unit (4) comprises a mounting frame (41) and a temperature sensor (42), the temperature sensor (42) is parallel to the track (3), the temperature sensor (42) is mounted on the mounting frame (41), and the mounting frame (41) is mounted on the support frame (1) and is located at the middle part of the track (3).

7. The direct-current resistance test fixture for conductors according to claim 6, wherein the temperature and humidity display unit (5) comprises a box body (51), a temperature display screen (52) and an electronic hygrometer (53), the box body (51) is mounted on the support (1), the temperature display screen (52) and the electronic hygrometer (53) are mounted in the box body (51), and the temperature display screen (52) is electrically connected with the temperature sensor (42).

8. The direct-current resistance test fixture for conductors according to claim 1, wherein the length detection unit (6) comprises a grating ruler body (61), a grating ruler display (62), a grating ruler measuring head (63) and a connecting piece (64), the grating ruler measuring head (63) is fixed on the clamping seat assembly (2) in sliding assembly through the connecting piece (64), the grating ruler display (62) is mounted on the clamping seat assembly (2) in sliding assembly, and the grating ruler body (61) is mounted on the support (1).

9. The fixture for testing the direct current resistance of the conductor according to claim 1, wherein the bracket (1) comprises a bottom plate (11), two groups of supporting legs (12) and a fixing piece (13), the two groups of supporting legs (12) are respectively assembled at the bottoms of two ends of the bottom plate (11) in a rotating mode, and the supporting legs (12) are fixed on the bottom plate (11) through the fixing piece (13).

10. The fixture for testing the direct-current resistance of the conductor according to claim 1, wherein three concave grooves for rapidly positioning the clamping seat assembly (2) for sliding assembly are formed in the rail (3), and the three concave grooves are used for measuring samples of 0.25 meter, 0.5 meter and 0.75 meter respectively.

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