CN111610350B - High-altitude junction pole device - Google Patents

Abstract

The invention discloses a high-altitude wiring pole device which comprises an adjusting unit, a shell unit and a supporting unit, wherein the shell unit wraps the adjusting unit, and the supporting unit is arranged below the shell unit. The adjusting unit controls the rotation and the lifting of the high-altitude wiring rod, and the supporting unit supports the whole device. The invention also discloses a wiring rod matched with the high-altitude wiring rod device, which comprises an overlapping unit, a chuck unit, a joint unit and a lead fixing unit, wherein the chuck unit is arranged at the top end of the overlapping unit, and the joint unit is arranged at the bottom end of the overlapping unit. The lapping unit is used for increasing the length of the whole device, the chuck unit is clamped on a wiring end of the device to be tested, and the joint unit is connected with the tester for testing. The high-altitude wiring pole device is simple in structure, can be flexibly lengthened and shortened, is convenient to install and convenient to fold, unfold and transport, and can be used for realizing the high-altitude wiring pole through the high-altitude wiring pole device matched with the high-altitude wiring pole device.

Description

High-altitude junction pole device

Technical Field

The invention relates to the technical field of detection of power system equipment, in particular to a high-altitude wiring rod device.

Background

The existing market is large with TD-1168 type high-altitude wiring clamp, the technology can carry out high-altitude wiring, any position capable of being clamped can be selected for testing, and wiring requirements of different angles can be met. The disadvantages are that: 1. the contact part of the test wire and the jaw is stressed greatly in high-altitude wiring, the stress direction is complex, and the test wire is easy to wear and break. Test data are abnormal, and working time is increased to a certain extent; 2. when the high-altitude wiring is carried out, the test wire is hung in the air and is easy to move back and forth under the action of strong wind, and other equipment is easy to be touched by mistake; 3. when the wiring clamp is carried and stored, the test wire needs to be taken down and stored separately, so that the wiring clamp is very inconvenient to transport and carry; 4. before wiring, the test wire needs to be connected back to the jaw, so that repeated operation is caused, and the working efficiency is influenced; 5. when testing at every turn, when needing to hang the terminal rod on the termination that needs testing arrangement, need the people to lift the terminal rod and carry out the overlap joint, people's arm can be tired very much.

Disclosure of Invention

This section is for the purpose of summarizing some aspects of embodiments of the invention and to briefly introduce some preferred embodiments. In this section, as well as in the abstract and the title of the invention of this application, simplifications or omissions may be made to avoid obscuring the purpose of the section, the abstract and the title, and such simplifications or omissions are not intended to limit the scope of the invention.

The present invention has been made in view of the above and/or other problems occurring in the conventional overhead connecting poles.

Therefore, the problem to be solved by the present invention is how to solve the fatigue of the personnel when hanging the test line.

In order to solve the technical problems, the invention provides the following technical scheme: a high-altitude wiring rod device comprises an adjusting unit and a rotating part, wherein the adjusting unit comprises a lifting part and a rotating part matched with the lifting part, the lifting part comprises a first worm, a first handle arranged at one end of the first worm and a worm wheel matched with the first worm, the rotating part comprises a worm wheel rotating shaft matched with the first worm in a rotating mode, a second worm matched with the worm wheel rotating shaft, a second handle arranged at one end of the second worm and a fixing part, one end of the fixing part is matched with the first worm in a rotating mode, the other end of the fixing part is fixedly matched with the worm wheel rotating shaft, and the fixing part is matched with the worm wheel; the shell unit wraps the adjusting unit and comprises a first shell matched with the fixed piece and a second shell matched with the rotating piece, and the first shell is arranged in the second shell; the supporting unit is arranged below the shell unit and comprises supporting legs hinged to the bottom surface of the second shell and supporting frames hinged to the supporting legs respectively.

As a preferable aspect of the device for an overhead wire connecting pole of the present invention, wherein: the first worm is provided with a first groove at the joint of the first worm and the turbine rotating shaft, and the turbine rotating shaft is arranged in the first groove through a bearing.

As a preferable aspect of the device for an overhead wire connecting pole of the present invention, wherein: two sides all are provided with annular groove second recess about the turbine, and the medial surface is provided with the screw thread, the mounting with the cooperation of second recess, one side of mounting with turbine pivot fixed connection, the opposite side with first worm normal running fit.

As a preferable aspect of the device for an overhead wire connecting pole of the present invention, wherein: a limiting part is arranged in the first shell, and the fixing piece is fixed in the first shell by the limiting part; the second casing includes the third recess that the top surface set up to and the first hole of rectangle hole that side and bottom surface set up, first casing set up in the third recess.

As a preferable aspect of the device for an overhead wire connecting pole of the present invention, wherein: the supporting leg is provided with a plurality ofly, the support frame is including setting up in a plurality of drum in the middle of the supporting leg, and respectively with each the supporting leg with the drum carries out articulated hinge rod.

Another object of the present invention is to provide a pole for a high-altitude pole, which can be automatically lifted by a high-altitude pole.

In order to solve the technical problems, the invention provides the following technical scheme: a wiring pole matched with a high-altitude wiring pole device comprises a lap joint unit, a first connecting piece and a first lead, wherein the lap joint unit comprises an extension bar, a connecting piece in threaded connection with the extension bar, and the first lead is arranged inside the extension bar and is connected with the connecting piece and the extension bar; the chuck unit is arranged at the top end of the lap joint unit and comprises a chuck rod in threaded connection with the connecting piece, a test chuck arranged at the top end of the chuck rod and a second lead for connecting the test chuck and the chuck rod; the joint unit is arranged at the bottom end of the lap joint unit and comprises a joint rod in threaded connection with the connecting piece, a plug piece arranged at the bottom end of the joint rod and a conductive piece matched with the plug piece.

The invention relates to a preferable scheme of a junction pole matched with a device of the high-altitude junction pole, wherein: the extension bar comprises a first bar and a second bar in threaded fit with the first bar, the second bar comprises a first conductive end and a second conductive end which are arranged on the inner side, and the upper ends of the first conductive end and the second conductive end are respectively electrically connected with the two first wires; the lower end of the first conductive end is attached to the thread surface of the lower end of the second rod, and the lower end of the second conductive end is arranged at the circle center of the second rod.

A preferred embodiment of the pole for use with the aerial pole arrangement of the present invention comprises: the connecting piece comprises a third conductive end and a fourth conductive end which are arranged on the inner side surface, the top of the third conductive end penetrates through the side surface of the connecting piece and is attached to the thread surface at the top end of the connecting piece, and the top of the fourth conductive end penetrates through the top surface of the connecting piece; the lower ends of the third conductive end and the fourth conductive end are electrically connected with the two first wires respectively.

A preferred embodiment of the pole for use with the aerial pole arrangement of the present invention comprises: the chuck rod comprises a third rod and a fourth rod in threaded fit with the third rod, the fourth rod comprises a fifth conductive end and a sixth conductive end which are arranged on the inner side surface, and the upper ends of the fifth conductive end and the sixth conductive end are respectively and electrically connected with the two second wires; the lower end of the fifth conductive end is attached to the thread surface of the lower end of the fourth rod, and the lower end of the sixth conductive end is arranged at the circle center of the fourth rod.

A preferred embodiment of the pole for use with the aerial pole arrangement of the present invention comprises: the test chuck comprises a current measuring head and a voltage measuring head, and the two second wires are respectively and electrically connected with the current measuring head and the voltage measuring head.

The invention has the beneficial effects that the invention provides the lap joint type high-altitude wiring rod with the built-in test wire and the device matched with the lap joint type high-altitude wiring rod. High altitude junction pole simple structure can lengthen in a flexible way and shorten, installs conveniently and is convenient for receive and release the transportation, can realize the high altitude junction pole through the high altitude junction pole device rather than the cooperation use.

Drawings

In order to more clearly illustrate the technical solutions of 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 inventive exercise. Wherein:

FIG. 1 is a block diagram of a high altitude terminal block and its associated apparatus of example 1.

Fig. 2 is a block diagram of a device for a high-altitude terminal pole in example 1.

Fig. 3 is a top view of a housing unit of the arrangement of overhead terminal poles of example 1.

Fig. 4 is a diagram of an adjusting unit of the device of the overhead terminal block of example 1.

Fig. 5 is an exploded view of the adjusting unit of the device of the aerial terminal block of example 1.

Fig. 6 is a second housing view of the arrangement of the aerial terminal in example 1.

Fig. 7 is a block diagram of a terminal post used in conjunction with the apparatus of the aerial terminal post of example 1.

Fig. 8 is an exploded view of the overlapping and splicing units of the terminal rod used in conjunction with the apparatus of the aerial terminal rod of example 1.

Fig. 9 is an exploded view of the collet unit of a terminal rod used in conjunction with the apparatus of the aerial terminal rod of example 1.

Fig. 10 is a bottom view of a jaw unit of a terminal rod used in cooperation with the apparatus of the aerial terminal rod of example 1.

Fig. 11 is a cross-sectional view of a terminal block used in cooperation with the apparatus of a high-altitude terminal block in example 1.

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, but the present invention may be practiced in other ways than those specifically described and will be readily apparent to those of ordinary skill in the art without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.

Furthermore, reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one implementation of the invention. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.

Example 1

Referring to fig. 1 to 6, a first embodiment of the present invention provides an overhead terminal block device, which includes an adjusting unit 100, a housing unit 200, and a supporting unit 300, wherein the housing unit 200 encloses the adjusting unit 100, and the supporting unit 300 is disposed below the housing unit 200. The adjusting unit 100 controls the elevation of the high altitude terminal rod, and the supporting unit 300 supports the whole apparatus.

Specifically, the adjusting unit 100 comprises a lifting member 101 and a rotating member 102 matched with the lifting member 101, wherein the lifting member 101 comprises a first worm 101a, a first handle 101b arranged at one end of the first worm 101a and a worm wheel 101c matched with the first worm 101a, the rotating member 102 comprises a worm wheel rotating shaft 102a matched with the first worm 101a in a rotating manner, a second worm 102b matched with the worm wheel rotating shaft 102a, a second handle 102c arranged at one end of the second worm 102b and a fixing member 102d, one end of which is matched with the first worm 101a in a rotating manner and the other end of which is fixedly matched with the worm wheel rotating shaft 102a, and the fixing member 102d is matched with the worm wheel 101 c; the first worm 101a is provided with a first groove 101a-1 at the joint with the turbine rotating shaft 102a, the turbine rotating shaft 102a is arranged in the first groove 101a-1 through a bearing 101e, the upper surface and the lower surface of the turbine 101c are both provided with annular groove second grooves 101c-1, the inner side surfaces of the annular grooves are provided with threads, the fixing piece 102d is matched with the second groove 101c-1, one side of the fixing piece 102d is fixedly connected with the turbine rotating shaft 102a, and the other side of the fixing piece 102d is in rotating fit with the first worm 101 a. The worm wheel shaft 102a is provided with a worm wheel which is matched with the second worm 102 b.

The housing unit 200 includes a first housing 201 fitted with the fixed member 102d, and a second housing 202 fitted with the rotary member 102, the first housing 201 being disposed in the second housing 202; a limiting part 201a is arranged in the first shell 201, and the fixing piece 102d is fixed in the first shell 201 by the limiting part 201 a; the second housing 202 includes a third recess 202a formed on the top surface thereof, and a first rectangular hole 202b formed on the side surface thereof and the bottom surface thereof, and the first housing 201 is disposed in the third recess 202 a.

The supporting unit 300, which is disposed below the housing unit 200, includes supporting legs 301 hinged to the bottom surface of the second housing 202, and supporting frames 302 hinged to the supporting legs 301, respectively, the supporting legs 301 are provided in plurality, and the supporting frames 302 include cylinders 302a disposed in the middle of the supporting legs 301, and hinge rods 302b hinged to the supporting legs 301 and the cylinders 302a, respectively.

To sum up, the first handle 101b and the second handle 102c are disposed outside the second housing 202, when the first handle 101b is rotated, the worm 101a drives the turbine 101c to rotate, and when the second handle 102c is rotated, the second worm 102b drives the turbine rotating shaft 102a to rotate, because the turbine rotating shaft 102a is fixedly connected with the fixing member 102d, the fixing member 102d drives the whole adjusting unit and the first housing 201 to rotate.

The invention also relates to a pole used together with the high-altitude pole device, and a fourth embodiment of the invention is shown in fig. 7-11 and comprises an overlapping unit 400, a clamping head unit 500 and a joint unit 600. The collet unit 500 is disposed at the top end of the overlapping unit 400, and the joint unit 600 is disposed at the bottom end of the overlapping unit 400. The overlapping unit 400 is used to increase the length of the entire device, the collet unit 500 is clamped on the terminal of the device to be tested, and the joint unit 600 is connected with the tester to be tested.

Specifically, the cartridge unit 500 includes a cartridge rod 501 threadedly coupled to the connector 402, a test cartridge 502 disposed at a top end of the cartridge rod 501, and a second wire 503 connecting the test cartridge 502 and the cartridge rod 501. The clamping rod 501 comprises a third rod 501a and a fourth rod 501b in threaded fit with the third rod 501a, the fourth rod 501b comprises a fifth conductive end 501b-1 and a sixth conductive end 501b-2 which are arranged on the inner side, and the upper ends of the fifth conductive end 501b-1 and the sixth conductive end 501b-2 are respectively and electrically connected with two second wires 503; the lower end of the fifth conductive end 501b-1 is attached to the threaded surface at the lower end of the fourth rod 501b, and the lower end of the sixth conductive end 501b-2 is disposed at the center of the fourth rod 501 b. The test cartridge 502 includes a current probe 502a and a voltage probe 502b, and two second wires 503 electrically connected to the current probe 502a and the voltage probe 502b, respectively. The clamp rod 501 has substantially the same structure as the extension rod 401, except that the length of the third rod 501a is smaller than that of the first rod 401a, and the rest are the same, so that the second wire 503 is conducted with the first wire 403 as long as the upper end of the connecting member 402 is screwed to the fourth rod 501 b. The test cartridge 502 is conventional and will not be described in detail in this embodiment.

The tap unit 400 includes a tap rod 601 screw-coupled to the coupling member 402, a plug member 602 provided at a bottom end of the tap rod 601, and a conductive member 603 engaged with the plug member 602. The plug member 602 includes a male connector including a current connection contact and a voltage connection contact, and a female connector including a current connection hole to be fitted with the current connection contact, and a voltage connection hole to be fitted with the voltage connection contact. The connector rod 601 comprises a first hole and a second hole, and the conducting strips comprise a current conducting strip and a voltage conducting strip; the button 603b includes a current key pressed in the first hole by the current conducting plate, and a voltage key pressed in the second hole by the voltage conducting plate, wherein a first protrusion is disposed on a side surface of the current key, and a second protrusion is disposed on a side surface of the voltage key. The conducting strip needs to have certain length and elasticity, the top of conducting strip is connected with the lower extreme of wire, the top of wire is connected with third conductive end 402a and the fourth conductive end 402b of connecting piece 402, the hole through well upper portion of conducting strip is fixed on joint pole 601, first hole and second hole set up the top at plug piece 602, all still be provided with the same recess in first hole and the second hole, this recess cooperates with first arch and second arch respectively, this recess is that joint pole 601 sets up from inside to outside, personally submit the circular arc of longitudinal symmetry in joint pole 601 inside, then to the outside rectangle that then presents longitudinal symmetry of joint pole 601. When the current key is defined to be at the initial position, the current conducting plate is attached to the current connecting contact, at the moment, the current key is pressed to enable the first protrusion to rotate at a certain angle after being close to the inner side surface of the connector rod 601, then the current key is pressed to be incapable of returning to the initial position, and the current conducting plate is separated from the current connecting contact. Similarly, the voltage key is pressed, and the voltage conducting strip is separated from the voltage connecting contact. The male connector is connected to the lead of the tester.

Further, the wire fixing unit comprises a third groove and a fourth groove; the third groove is matched with a lead, and the upper end of the second rod 401b, the upper end of the fourth rod 501b and the lower end of the connecting piece 402 are provided with limiting strips matched with the fourth groove. The cross section of the third groove in the vertical direction is an inclined straight line. The wire fixing units are provided at the junction of the first rod 401a and the second rod 401b, the junction of the third rod 501a and the fourth rod 501b, the junction of the first rod 401a and the link 402, and the junction of the fourth rod 501b and the link 402. The wire fixing unit is inserted in connecting piece 402, on second pole 401b and the fourth pole 501b, first pole 401a, third pole 501a and fourth pole 501b all are provided with boss restriction connecting piece 402, carry on spacingly to connecting piece 402, the setting of spacing is in order to make when carrying out this device of overlap joint, connecting piece 402 can't rotate, thereby guarantee that the wire is stable with being connected of conducting strip or wiring end, the reason that third recess cross section slope set up is so can extrude the pipe wall firmly with the wire on, further guarantee that the wire is stable with being connected of conducting strip or wiring end.

The device whether to use the high-altitude wiring pole can be selected according to the height, if the wiring terminal of the device to be tested is lower, the high-altitude wiring pole is directly lapped, and then the high-altitude wiring pole is hung with the wiring terminal of the device to be tested manually. If the wiring end of the device to be tested is higher, the device of the high-altitude wiring rod is used.

The use of overhead terminal rods has two embodiments depending on the number of extension rods 401 with external threads:

the first embodiment: all the extension bars 401 are externally provided with a screw thread to be engaged with the worm wheel 101c, and at this time, the number of the overlapping units 400 may be selected according to the height of the terminals of the device to be tested, and if the height of the terminals of the device to be tested is high, the collet unit 500 is only required to be mounted on the connecting member 402 of the overlapping unit 400 first, then, the plurality of overlapping units 400 are sequentially connected, the second handle 102c is rotated, the first housing 201 is rotated to a vertical direction, then the tail end of the installed wiring rod is screwed into the turbine 101c, then the second handle 102c is rotated to rotate the first shell 201 to the horizontal, then the plurality of lapping units 400 are connected, the first handle 101b is rotated while being connected, the wiring rod is lifted until the wiring rod reaches the height of touching the wiring end of the device to be tested, and finally the joint unit 600 is installed at the bottom end of the extension rod 401 of the lowest lapping unit 400. It should be noted that the joint unit 600 described herein includes the joint rod 601 and the connecting member 402, and when disassembled, the joint rod 601 and the connecting member 402 need not be disassembled and combined together, and can be used directly next time. If only need carry out single electric current or voltage test, then only need press current key or voltage key, then select, make it unable reset, experiment can again.

The second embodiment: only the outside of part extension bar 401 is provided with the screw thread with turbine 101c complex, like fig. 1, the reason that sets up like this is if the wiring end height that needs testing arrangement is lower, when need not to use the device of high altitude terminal bar, and extension bar 401 outside has the screw thread, and the personnel can be very uncomfortable when holding extension bar 401 with the hand, so only need connect the extension bar 401 of screw thread during this time can. When the height of the terminal of the device to be tested is reduced, the threaded extension bar 401 is connected to the bottom of the terminal bar, and the rest steps are the same as those of the first embodiment.

It should be noted that the above-mentioned embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered in the claims of the present invention.

Claims (9)

1. A high altitude terminal rod device which characterized in that: comprises the steps of (a) preparing a mixture of a plurality of raw materials,

an adjustment unit (100) comprising a lifting member (101) and a rotating member (102) cooperating with the lifting member (101), the lifting piece (101) comprises a first worm (101a) and a first handle (101b) arranged at one end of the first worm (101a), and a worm wheel (101c) matched with the first worm (101a), wherein the rotating piece (102) comprises a worm wheel rotating shaft (102a) in rotating matching with the first worm (101a), a second worm (102b) matched with the worm wheel rotating shaft (102a), and a second handle (102c) arranged at one end of the second worm (102b), and a fixing member (102d) having one end rotatably engaged with the first worm (101a) and the other end fixedly engaged with the worm wheel shaft (102a), the fixing member (102d) being engaged with the worm wheel (101 c);

a housing unit (200) enclosing the adjustment unit (100) therein, comprising a first housing (201) cooperating with the fixed member (102d), and a second housing (202) cooperating with the rotating member (102), the first housing (201) being disposed within the second housing (202);

the supporting unit (300) is arranged below the shell unit (200) and comprises supporting legs (301) hinged with the bottom surface of the second shell (202) and supporting frames (302) hinged with the supporting legs (301) respectively;

the lapping unit (400) comprises an extension bar (401), a connecting piece (402) in threaded connection with the extension bar (401), and a first lead (403) which is arranged inside the extension bar (401) and is connected with the connecting piece (402) and the extension bar (401), wherein both the top end and the bottom end of the connecting piece (402) are provided with threads, and part of the exterior of the extension bar (401) is provided with threads matched with the turbine (101 c);

the clamping head unit (500) is arranged at the top end of the lapping unit (400) and comprises a clamping head rod (501) in threaded connection with the connecting piece (402), a testing clamping head (502) arranged at the top end of the clamping head rod (501), and a second wire (503) connecting the testing clamping head (502) and the clamping head rod (501);

the connector unit (600) is arranged at the bottom end of the lapping unit (400) and comprises a connector rod (601) in threaded connection with the connecting piece (402), a plug piece (602) arranged at the bottom end of the connector rod (601), and a conductive piece (603) matched with the plug piece (602).

2. The overhead mast apparatus of claim 1, wherein: the first worm (101a) is provided with a first groove (101a-1) at the joint of the first worm and the turbine rotating shaft (102a), and the turbine rotating shaft (102a) is arranged in the first groove (101a-1) through a bearing (101 e).

3. The overhead mast assembly of claim 2, wherein: the two sides all are provided with annular groove second recess (101c-1) about turbine (101c), and the medial surface is provided with the screw thread, mounting (102d) with second recess (101c-1) cooperation, one side of mounting (102d) with turbine pivot (102a) fixed connection, the opposite side with first worm (101a) normal running fit.

4. An overhead mast assembly as claimed in any one of claims 1 to 3, wherein: a limiting part (201a) is arranged in the first shell (201), and the fixing piece (102d) is fixed in the first shell (201) by the limiting part (201 a); the second shell (202) comprises a third groove (202a) arranged on the top surface and a first rectangular hole (202b) arranged on the side surface and the bottom surface, and the first shell (201) is arranged in the third groove (202 a).

5. The overhead mast apparatus of claim 4, wherein: the supporting leg (301) are provided with a plurality ofly, support frame (302) are including setting up in a plurality of drum (302a) in the middle of supporting leg (301) and respectively with each support leg (301) with drum (302a) carry out articulated hinge lever (302 b).

6. The overhead mast assembly of claim 5, wherein: the extension rod (401) comprises a first rod (401a) and a second rod (401b) in threaded fit with the first rod (401a), the second rod (401b) comprises a first conductive end (401b-1) and a second conductive end (401b-2) which are arranged on the inner side surface, and the upper ends of the first conductive end (401b-1) and the second conductive end (401b-2) are respectively electrically connected with the two first wires (403); the lower end of the first conductive end (401b-1) is attached to the threaded surface of the lower end of the second rod (401b), and the lower end of the second conductive end (401b-2) is arranged at the center of the circle of the second rod (401 b).

7. The overhead mast apparatus of claim 6, wherein: the connecting piece (402) comprises a third conductive end (402a) and a fourth conductive end (402b) which are arranged on the inner side surface, the top of the third conductive end (402a) penetrates through the side surface of the connecting piece (402) and is attached to the thread surface at the top end of the connecting piece (402), and the top of the fourth conductive end (402b) penetrates through the top surface of the connecting piece (402); the lower ends of the third conductive end (402a) and the fourth conductive end (402b) are respectively electrically connected with the two first conducting wires (403).

8. The overhead mast assembly of claim 7, wherein: the chuck rod (501) comprises a third rod (501a) and a fourth rod (501b) in threaded fit with the third rod (501a), the fourth rod (501b) comprises a fifth conductive end (501b-1) and a sixth conductive end (501b-2) which are arranged on the inner side surface, and the upper ends of the fifth conductive end (501b-1) and the sixth conductive end (501b-2) are respectively and electrically connected with the two second wires (503); the lower end of the fifth conductive end (501b-1) is attached to a threaded surface at the lower end of the fourth rod (501b), and the lower end of the sixth conductive end (501b-2) is arranged at the center of the fourth rod (501 b).

9. The overhead mast apparatus of claim 8, wherein: the test chuck (502) comprises a current measuring head (502a) and a voltage measuring head (502b), and the two second wires (503) are respectively and electrically connected with the current measuring head (502a) and the voltage measuring head (502 b).

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