CN219676132U

CN219676132U - High-voltage electroscope that can extend

Info

Publication number: CN219676132U
Application number: CN202320650821.4U
Authority: CN
Inventors: 王飞; 晋登泽; 李娜; 程鹏; 韩文磊; 沈山; 隋学颍; 管路开; 曹新宇; 薛晓阳; 石晓璇; 夏正义; 薛敬著; 薛翔琳; 刘昱辉; 于冲冲; 高俊杰; 薛蒙; 王云; 丁常春
Original assignee: Qingdao Kunhe Ningtong Power Engineering Co ltd
Current assignee: Qingdao Kunhe Ningtong Power Engineering Co ltd
Priority date: 2023-03-29
Filing date: 2023-03-29
Publication date: 2023-09-12
Anticipated expiration: 2033-03-29

Abstract

The utility model provides an extensible high-voltage electricity testing device, which belongs to the technical field of electric power inspection, and comprises an electricity testing device and a supporting device, wherein the electricity testing device comprises a conductive electricity testing head, a resistor, a neon tube and a device shell, the device shell comprises a holding part and a telescopic part, the holding part is communicated with a wire reel, and a wire winding column is arranged in the middle of the wire reel; the electric lead in front of the resistor is wound on the winding post of the wire spool, the front end of the electric lead penetrates out of the telescopic part and is electrically connected with the electricity checking head, the front end of the telescopic part is provided with a fixing block, and the fixing block is used for clamping the electricity checking head and fixing the electricity checking head at the front end of the telescopic part; a lamplight detection mechanism is also arranged in the holding part; the support device is sleeved on the device shell and used for supporting the extending telescopic part, and the risk that working personnel need to work aloft due to the limitation of the length of the high-voltage electricity testing device can be avoided.

Description

High-voltage electroscope that can extend

Technical Field

The utility model belongs to the technical field of electric power inspection, and particularly relates to an extensible high-voltage electricity inspection device.

Background

The high-voltage transmission line is an important component of a power system, the working condition of the high-voltage transmission line is related to the safety, stability and reliability of power supply, so that the overhaul and maintenance of the transmission line are very important, in the maintenance of the transmission line, the electricity inspection is a necessary step, most of electricity inspection operations on the transmission line at present need rod climbing operation of an maintainer, the high-voltage wire is relatively high in distance from the ground because the high-voltage wire needs to ensure enough safety distance to the ground during design and installation, the sizes of the electroscope on the market are relatively fixed and unified, and the operations cannot be smoothly completed due to the factors of excessively short size of the electroscope, relatively short height of an operator, excessively high height of the high-voltage wire and the like, so that the safety risk is increased, and the operation time is prolonged.

The utility model discloses a high-voltage electricity testing device disclosed in China patent publication No. CN217278597U (application No. CN 202221007723.0), which comprises a device shell, wherein a telescopic support is arranged in the device shell, a protection gasket is fixed at the top end of the telescopic support, an electroscope is fixed at the top of the protection gasket, a control switch is arranged on the front surface of the device shell, and a center locating plate and a small motor are fixed in the device shell. This high-voltage electroscope device, through moving small-size motor, be convenient for drive with transmission gear engagement's rotation gear rotates, and then control adjusting roller operation, promote flexible pillar to stretch out certain length, improve the precision that detects, through spacing ratchet and spacing pawl, be convenient for avoid adjusting roller gyration, prevent that flexible pillar from retracting when using.

Because the high-voltage line is often arranged at a high position, the danger that working personnel need to work aloft due to the limitation of the length of the high-voltage electroscope cannot be avoided by using the utility model for higher high-voltage lines.

Disclosure of Invention

In view of the above, the present utility model provides a high-voltage electroscope device, which can avoid the danger that workers need to work aloft due to the limitation of the length of the high-voltage electroscope device.

The utility model is realized in the following way:

the utility model provides an extensible high-voltage electricity testing device which comprises an electricity testing device and a supporting device, wherein the electricity testing device comprises a conductive electricity testing head, a resistor, a neon tube and a device shell, the device shell comprises a holding part and a telescopic part, and the holding part and the telescopic part are of hollow structures; the holding part is communicated with a wire spool, and a wire spool is arranged in the middle of the wire spool; the resistor is electrically connected with the neon tube through an electric lead, the resistor and the neon tube are connected to the tail of the electric lead, the tail of the neon tube is electrically connected with a hand-held electric electrode, the hand-held electric electrode is arranged on the surface of the holding part, the resistor is fixed in the holding part, the holding part is provided with a transparent visual window, and the opening position of the visual window corresponds to the position of the neon tube and is used for observing whether the neon tube is lightened; the telescopic part is connected to the front end of the holding part, the electric lead in front of the resistor is wound on the winding post of the wire spool, the front end of the electric lead penetrates out of the telescopic part and is electrically connected with the electricity inspection head, the front end of the telescopic part is provided with a fixing block, and the fixing block is used for clamping the electricity inspection head and fixing the electricity inspection head at the front end of the telescopic part; a lamplight detection mechanism is also arranged in the holding part;

the supporting device is sleeved on the device shell and used for supporting the extending telescopic part.

The technical effects of the extensible high-voltage electroscope device provided by the utility model are as follows: the neon tube utilizes the property that the rare gas emits light after being electrified, the neon tube is filled with the rare gas, and whether the neon tube is lightened or not can be observed by utilizing the visual window, so that whether the high-voltage line is electrified or not is checked;

the telescopic part can be telescopic, the using distance of the high-voltage electroscope is increased, the aloft work of workers is avoided, the electroscope operation can be completed on the ground, and the operation convenience and safety are greatly improved;

the wire spool can accommodate the electrical wires, and can provide electrical wires long enough when the telescoping portion is extended, while avoiding the electrical wires from winding when the telescoping portion is shortened;

by arranging the supporting device, a supporting point is provided for the elongated electricity testing device, and the inconvenience of lifting the overlong electricity testing device is avoided.

Based on the technical scheme, the extensible high-voltage electricity testing device can be improved as follows:

the electricity inspection head is a metal rod with elasticity, and the two lower ends of the metal rod are hinged together.

Further, the front end of the metal rod of the electricity inspection head is arc-shaped, the arc-shaped opening is outward, and the tail part of the metal rod is a straight rod.

The beneficial effects of adopting above-mentioned improvement scheme are: the arc opening of the metal rods can enable the electricity testing head to be more easily put on the high-voltage wire for electricity testing, and the included angle between the two metal rods can enable the high-voltage wire to be in contact with the two metal rods for electricity testing in a clamping mode.

The fixing block is a conical rubber body with the hole in the middle, and the diameter of the hole is consistent with the diameter of the tail end of the electricity inspection head.

The beneficial effects of adopting above-mentioned improvement scheme are: through setting up the fixed block, make and examine the electricity head and can fix on the fixed block to when making the extension of telescopic part, examine the extension of electricity head electrokinetic wire from the wrapping post of wire reel, perhaps support the extension and retract when wire reel recovery electric wire, convenient operation.

Further, the straight rod part at the tail part of the metal rod of the electricity inspection head is provided with a blocking rod which is used for fixing the relative position of the electricity inspection head on the fixed block.

The telescopic part is of a telescopic sleeve structure, the diameter of the sleeve is sequentially reduced from outside to inside, and the tail part of each sleeve adjacent to the inner side of the sleeve can be clamped at the top of the sleeve.

Further, the telescopic part is provided with a telescopic sleeve structure with a sufficient number and length, so that the problem that the sleeve structure is insufficient to cause that a high-position water level and a high-voltage line cannot be touched when the high-voltage electricity testing device is used can be avoided.

The winding handle comprises a winding post connecting part, a transverse connecting part and a handheld part, wherein the winding post connecting part is fixedly connected with the top end of the winding post and stretches out of the shell of the winding plate, one end of the transverse connecting part is vertically connected with the winding post connecting part, and the other end of the transverse connecting part is vertically connected with the bottom of the handheld part.

The beneficial effects of adopting above-mentioned improvement scheme are: the handheld part can enable a user to rotate the wire reel more conveniently, so that the comfort and the working efficiency of the high-voltage electricity testing device are improved;

further, the wire spool can accommodate therein a wire having a length matching the telescopic length of the telescopic portion.

The light detection mechanism comprises a photosensitive sensor, a control center, an alarm and a battery, wherein the photosensitive sensor is arranged near the neon tube, the photosensitive sensor is electrically connected with the control center, the control center is electrically connected with the alarm, and the battery is electrically connected with the photosensitive sensor, the control center and the alarm and supplies power.

The beneficial effects of adopting above-mentioned improvement scheme are: through setting up light detection mechanism, avoid ambient brightness too high, make neon tube luminous unobvious, lead to the staff can not discover that the high-voltage line is electrified, and the siren sends out the alarm can in time remind the staff that the electric lead is electrified, avoids erroneous judgement.

The supporting device comprises telescopic foot rods, a connecting table and a connecting sleeve, wherein the three foot rods are hinged with the connecting table along the circumferential direction of the connecting table, and the connecting sleeve is arranged on the connecting table and used for fixing the supporting device and the device shell.

The beneficial effects of adopting above-mentioned improvement scheme are: the foot rod plays a supporting and fixing role, the groove can bear the telescopic part, and the role of stabilizing the high-voltage electricity testing device is played.

Further, the connecting table is provided with a groove, the connecting sleeve comprises a fixing sleeve and a fastening bolt, one end of the fixing sleeve is fixed on the connecting table, the other end of the fixing sleeve is provided with a first fastening screw hole corresponding to the fastening bolt, and a second fastening screw hole is formed in the position, opposite to the first fastening screw hole, of the connecting table.

The beneficial effects of adopting above-mentioned improvement scheme are: the telescopic part can be fixed to the adapter sleeve, and fastening bolt screws in or screws out in first fastening screw, second fastening screw, can control the elasticity of fixed cover to the telescopic part.

Specifically, the length of the fixed sleeve is smaller than the outer diameter of the telescopic part.

Further, the tail part of the foot rod is provided with a pulley head and a cone head in a replaceable mode.

The beneficial effects of adopting above-mentioned improvement scheme are: the pulley head and the conical head can be replaced according to the use environment, so that the high-voltage electricity testing device is more flexible and convenient to use.

Compared with the prior art, the extensible high-voltage electricity testing device has the beneficial effects that: the telescopic part can be telescopic, the using distance of the high-voltage electroscope is increased, the aloft work of workers is avoided, the electroscope operation can be completed on the ground, and the operation convenience and safety are greatly improved; the wire spool can accommodate the electrical wires, and can provide electrical wires long enough when the telescoping portion is extended, while avoiding the electrical wires from winding when the telescoping portion is shortened; by arranging the supporting device, a supporting point is provided for the elongated electricity testing device, so that the inconvenience of lifting the overlong electricity testing device is avoided; the arc-shaped opening of the metal rods can enable the electricity testing head to be more easily put on the high-voltage wire for electricity testing, and the included angle between the two metal rods can enable the high-voltage wire to be in contact electricity testing in a mode of being clamped between the two metal rods; through setting up light detection mechanism, avoid ambient brightness too high, make neon tube luminous unobvious, lead to the staff can not discover that the high-voltage line is electrified, and the siren sends out the alarm can in time remind the staff that the electric lead is electrified, avoids erroneous judgement.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the description of the embodiments of the present utility model will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, 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 view of a stretchable high voltage electroscope device according to the present utility model;

FIG. 2 is a top view of a high voltage electroscope device according to the present utility model which is extendable;

FIG. 3 is a schematic view of a partially hidden part of a high voltage electroscope device that is extensible according to the present utility model;

FIG. 4 is a circuit diagram of a high voltage electroscope device that is extensible in accordance with the present utility model;

FIG. 5 is a cross-sectional view of a portion of a support assembly of a high voltage electroscope device that is extendable in accordance with the present utility model;

in the drawings, the list of components represented by the various numbers is as follows:

1. an electricity checking head; 2. a resistor; 3. a neon tube; 41. a grip portion; 411. a visual window; 42. a telescopic part; 43. a fixed block; 5. a wire spool; 51. a winding handle; 511. a winding post connecting part; 512. a transverse connection; 513. a hand-held part; 6. a hand touch electrode; 71. a photosensitive sensor; 72. a control center; 73. an alarm; 74. a battery; 81. a foot bar; 811. a pulley head; 812. a conical head; 82. a connection station; 821. a groove; 83. connecting sleeves; 831. a fixed sleeve; 832. a fastening bolt; 833. a first fastening screw hole; 834. and a second fastening screw hole.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments. All other embodiments, based on the embodiments of the utility model, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the utility model.

Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, based on the embodiments of the utility model, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the utility model.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

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 utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

As shown in fig. 1-2, the extensible high-voltage electricity testing device provided by the utility model comprises an electricity testing device and a supporting device, wherein the electricity testing device comprises an electricity testing head 1, a resistor 2, a neon tube 3 and a device shell, the device shell comprises a holding part 41 and a telescopic part 42, and the holding part 41 and the telescopic part 42 are of a hollow structure; the holding part 41 is communicated with a wire spool 5, and a wire spool is arranged in the middle of the wire spool 5; the resistor 2 is electrically connected with the neon tube 3 through an electric lead, the resistor 2 and the neon tube 3 are connected to the tail part of the electric lead, the tail part of the neon tube 3 is electrically connected with the hand touch electrode 6, the hand touch electrode 6 is arranged on the surface of the holding part 41, the resistor 2 and the neon tube 3 are fixed in the holding part 41, the holding part 41 is provided with a transparent visual window 411, the opening position of the visual window 411 corresponds to the position of the neon tube 3 and is used for observing whether the neon tube 3 is lightened; the telescopic part is connected to the front end of the holding part 41, the electric lead in front of the resistor 2 is wound on the winding post of the wire spool 5, the front end of the electric lead penetrates out of the telescopic part 42 and is electrically connected with the electricity testing head 1, the front end of the telescopic part 42 is provided with a fixing block 43, and the fixing block 43 is used for clamping the electricity testing head 1 and fixing the electricity testing head 1 at the front end of the telescopic part 42; a lamplight detection mechanism is also arranged in the holding part 41;

the support device is sleeved on the device shell and is used for supporting the extending telescopic part 42.

In the above technical scheme, the electroscope 1 is a metal rod with elasticity, wherein two lower ends of the metal rod are hinged together.

Further, in the above technical scheme, the front end of the metal rod of the electroscope 1 is arc-shaped, the arc-shaped opening is outward, and the tail of the metal rod is a straight rod.

In the above technical solution, the fixing block 43 is a conical rubber body with a hole in the middle, and the diameter of the hole is consistent with the diameter of the tail end of the electroscope 1.

In the technical scheme, the telescopic part is of a telescopic sleeve structure, the diameters of the sleeves are sequentially reduced from outside to inside, and the tail part of each sleeve on the inner side of each adjacent sleeve can be clamped at the top of the outer sleeve.

In the above technical solution, the winding post of the winding reel 5 is connected with the winding handle 51, the winding handle 51 includes the winding post connecting portion 511, the transverse connecting portion 512 and the holding portion 513, the winding post connecting portion 511 is fixedly connected with the top end of the winding post, and extends out of the housing of the winding reel 5, one end of the transverse connecting portion 512 is vertically connected with the winding post connecting portion 511, and the other end of the transverse connecting portion 512 is vertically connected with the bottom of the holding portion 513.

As shown in fig. 3-4, in the above technical solution, the light detection mechanism includes a photosensor 71, a control center 72, an alarm 73 and a battery 74, the photosensor 71 is disposed near the neon tube 3, the photosensor 71 is electrically connected with the control center 72, the control center 72 is electrically connected with the alarm 73, and the battery 74 is electrically connected with the photosensor 71, the control center 72 and the alarm 73 and supplies power.

When the wire spool is used, the length of the telescopic part 42 is manually adjusted until the electricity testing head 1 approaches to a high-voltage wire to be tested, and the fixing block 43 can fix the electricity testing head 1 relative to the telescopic part 42, so that the electric wire is pulled by the electricity testing head 1 to be stretched while the telescopic part 42 is stretched, the wire spool 5 can be driven to rotate due to the involvement of the electric wire, and the electric wire wound on the wire spool is discharged to increase the length of the electric wire in the telescopic part 42; the electric inspection head 1 is moved towards the direction of the high-voltage line until the arc-shaped opening of the electric inspection head 1 is placed on the high-voltage line, or the two metal rods of the electric inspection head 1 clamp the high-voltage line, then one hand holds the hand touch electrode 6 on the holding part 41, if the high-voltage line is electrified, the current is divided by the electric inspection head 1 through the resistor 2 and then conducted to the neon tube 3, rare gas in the neon tube 3 can be lightened by electrifying, a user can observe whether the neon tube 3 is lightened or not through the visual window 411, if the detection environment is too bright, the light signal of the neon tube 3 is converted into an electric signal after the light signal is received by the light sensor 71 and is transmitted to the control center 72, and the control center 72 controls the alarm 73 to sound an alarm after receiving the electric signal of the light sensor 71, so that the user can know that the electrified high-voltage electric wire of the electric inspection is electrified;

after the electricity test is finished, the user reversely rotates the hand-held part 513 by hand to drive the winding post to reversely rotate, and as one end of the electric lead is fixed by the neon tube 3, the winding post rotates to enable the electric lead to be reeled back to the winding post again, and the shortening trend of the electric lead drives the end part of the mortgage telescopic part 42 of the electricity test head 1, so that the telescopic part 42 is shortened until the telescopic part 42 is shortened to a state convenient to recover and take.

In the above technical solution, the supporting device includes a telescopic foot rod 81, a connecting table 82 and a connecting sleeve 83, where the three foot rods 81 are hinged with the connecting table 82 along the circumferential direction of the connecting table 82, and the connecting sleeve 83 is disposed on the connecting table 82 and is used for fixing the supporting device and the device housing.

Further, in the above technical solution, the connecting table 82 is provided with the recess 821, the connecting sleeve 83 includes the fixing sleeve 831 and the fastening bolt 832, one end of the fixing sleeve 831 is fixed on the connecting table 82, the other end of the fixing sleeve 831 is provided with the first fastening screw hole 833 corresponding to the fastening bolt 832, and the position of the connecting table 82 opposite to the first fastening screw hole 833 is provided with the second fastening screw hole 834.

As shown in fig. 5, a supporting device is installed at a proper position, a foot rod 81 is opened from a binding state on a connecting table 82 through a hinge, the foot rod 81 is installed on the ground at a proper position, the expansion degree of the foot rod 81 is manually adjusted, after the position of the supporting device is determined, an electricity checking device is installed on a groove 821, the length of a telescopic part 42 is manually adjusted, after the length can meet the electricity checking requirement, a fixing sleeve 831 is pulled towards a second fastening screw hole 834 to enable the fixing sleeve 831 to cover the telescopic part 42, a fastening bolt 832 penetrates into the second fastening screw hole 834 after penetrating through a first fastening screw hole 833 on the fixing sleeve 831, and the first fastening screw hole 833 is close to the second fastening screw hole 834 until a device shell is fixed on the connecting table 82.

Further, in the above-described embodiments, the pulley head 811 and the taper head 812 are mounted to the tail of the foot bar 81 in a replaceable manner.

When the device is used, the pulley head 811 or the conical head 812 is clamped at the bottom of the foot rod 81 according to the specific site conditions, for example, the conical head 812 is used for fixing the supporting device relative to the ground on the earth, and the pulley head 811 is used for conveniently moving the supporting device on the flat ground.

The photosensor 71 may be a photosensor with a model RT-ALS manufactured by Shenzhen critical tech company, the control center 72 may be a semiconductor chip with a model PIC18F45K22-I/PT manufactured by Shenzhen core Cheng Wei electronics company, the alarm 73 may be an alarm with a model BZXF-01 manufactured by zhen electric technologies company, and the battery 74 may be a polymer lithium battery with a capacity 1400-1600mAh manufactured by Shenzhen bosai power technology company.

The telescopic part 42 can be extended by at least 6 meters, the length of the telescopic part 42 is manually adjusted until the electricity inspection head 1 approaches to the high voltage line to be measured, and the fixing block 43 can fix the electricity inspection head 1 relative to the telescopic part 42, so that the electricity inspection head 1 pulls the electric wire to be extended while the telescopic part 42 is extended, and the wire spool 5 can be driven to rotate due to the involvement of the electric wire, and the electric wire wound on the wire spool is discharged to increase the length of the electric wire in the telescopic part 42; the electric inspection head 1 is moved towards the direction of the high-voltage line until the arc-shaped opening of the electric inspection head 1 is placed on the high-voltage line, or the two metal rods of the electric inspection head 1 clamp the high-voltage line, then one hand holds the hand touch electrode 6 on the holding part 41, if the high-voltage line is electrified, the current is divided by the electric inspection head 1 through the resistor 2 and then conducted to the neon tube 3, rare gas in the neon tube 3 can be lightened by electrifying, a user can observe whether the neon tube 3 is lightened or not through the visual window 411, if the detection environment is too bright, the light signal of the neon tube 3 is converted into an electric signal after the light signal is received by the light sensor 71 and is transmitted to the control center 72, and the control center 72 controls the alarm 73 to sound an alarm after receiving the electric signal of the light sensor 71, so that the user can know that the electrified high-voltage electric wire of the electric inspection is electrified;

The foregoing is merely illustrative of the present utility model, and the present utility model is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present utility model. Therefore, the protection scope of the utility model is subject to the protection scope of the claims.

Claims

1. The extensible high-voltage electricity testing device comprises an electricity testing device and a supporting device and is characterized by comprising an electricity testing head (1), a resistor (2), a neon tube (3) and a device shell, wherein the electricity testing head is conductive, the device shell comprises a holding part (41) and a telescopic part (42), and the holding part (41) and the telescopic part (42) are of hollow structures; the holding part (41) is communicated with a wire spool (5), and a wire spool is arranged in the middle of the wire spool (5); the neon lamp comprises a neon tube (3), a resistor (2), a hand touch electrode (6), a neon tube (41) and a neon tube (3), wherein the resistor (2) is electrically connected with the neon tube (3) through an electric wire, the resistor (2) and the neon tube (3) are connected to the tail of the electric wire, the tail of the neon tube (3) is electrically connected with the hand touch electrode (6), the hand touch electrode (6) is arranged on the surface of the holding part (41), the resistor (2) is fixed in the holding part (41), the holding part (41) is provided with a transparent visual window (411), and the opening position of the visual window (411) corresponds to the position of the neon tube (3) and is used for observing whether the neon tube (3) is lightened; the telescopic part is connected to the front end of the holding part (41), the electric lead in front of the resistor (2) is wound on a winding column of the wire spool (5), the front end of the electric lead penetrates out of the telescopic part (42) and is electrically connected with the electricity inspection head (1), the front end of the telescopic part (42) is provided with a fixing block (43), and the fixing block (43) is used for clamping the electricity inspection head (1) and fixing the electricity inspection head (1) to the front end of the telescopic part (42); a lamplight detection mechanism is also arranged in the holding part (41);

the supporting device is sleeved on the device shell and is used for supporting the extending telescopic part (42).

2. A high voltage electricity testing device capable of being elongated according to claim 1, wherein said electricity testing head (1) is a metal rod with elasticity hinged together at its two lower ends.

3. The extendable high-voltage electricity testing device according to claim 2, wherein the metal rod of the electricity testing head (1) is arc-shaped at the front end, the arc-shaped opening is outward, and the tail part of the metal rod is a straight rod.

4. The extendable high-voltage electricity testing apparatus according to claim 1, wherein the fixed block (43) is a conical rubber body with a hole in the middle, and the diameter of the hole is consistent with the diameter of the tail end of the electricity testing head (1).

5. The extendable high-voltage electricity testing apparatus of claim 1, wherein the telescoping sections are of telescoping sleeve construction, the sleeve decreasing in diameter from the outside to the inside, the sleeve tail of each adjacent inner sleeve being capable of being snapped onto the top of the outer sleeve.

6. The extendable high-voltage electricity testing device according to claim 1, wherein the winding post of the wire spool (5) is connected with a winding handle (51), the winding handle (51) comprises a winding post connecting portion (511), a transverse connecting portion (512) and a handheld portion (513), the winding post connecting portion (511) is fixedly connected with the top end of the winding post and extends out of the shell of the wire spool (5), one end of the transverse connecting portion (512) is vertically connected with the winding post connecting portion (511), and the other end of the transverse connecting portion (512) is vertically connected with the bottom of the handheld portion (513).

7. The extensible high-voltage electroscope according to claim 1, wherein the light detection mechanism comprises a photosensor (71), a control center (72), an alarm (73) and a battery (74), wherein the photosensor (71) is arranged near the neon tube (3), the photosensor (71) is electrically connected with the control center (72), the control center (72) is electrically connected with the alarm (73), and the battery (74) is electrically connected with the photosensor (71), the control center (72) and the alarm (73) and supplies power.

8. The extendable high-voltage electricity testing apparatus according to claim 1, wherein the supporting means comprises a telescopic foot bar (81), a connecting table (82) and a connecting sleeve (83), the three foot bars (81) are hinged with the connecting table (82) along the circumferential direction of the connecting table (82), and the connecting sleeve (83) is provided on the connecting table (82) for fixing the supporting means and the apparatus housing.

9. The extendable high-voltage electricity testing apparatus of claim 8, wherein the connecting table (82) has a groove (821), the connecting sleeve (83) includes a fixing sleeve (831) and a fastening bolt (832), one end of the fixing sleeve (831) is fixed on the connecting table (82), the other end of the fixing sleeve (831) has a first fastening screw hole (833) corresponding to the fastening bolt (832), and a second fastening screw hole (834) is formed at a position of the connecting table (82) opposite to the first fastening screw hole (833).

10. A high voltage electricity testing apparatus according to claim 9 and characterized in that said foot bar (81) is provided with replaceable pulley heads (811) and conical heads (812) at the tail.