CN211955657U

CN211955657U - Insulation resistance megger electric drive device

Info

Publication number: CN211955657U
Application number: CN201922239726.1U
Authority: CN
Inventors: 陈梁远; 赵坚; 余长厅; 张玉波; 张磊
Original assignee: Electric Power Research Institute of Guangxi Power Grid Co Ltd
Current assignee: Electric Power Research Institute of Guangxi Power Grid Co Ltd
Priority date: 2019-12-14
Filing date: 2019-12-14
Publication date: 2020-11-17
Anticipated expiration: 2029-12-14

Abstract

The utility model relates to an insulation resistance megger electric drive device, which comprises a bracket and a direct current gear reduction motor, wherein the bracket is U-shaped, two sides of the front end opening of the U-shaped bracket are respectively provided with a relative screw hole, and the screw holes are matched with butterfly screws; the direct-current gear reduction motor is fixedly installed at the rear end of the support, a connecting shaft is fixedly connected to an output shaft of the direct-current gear reduction motor, and a bayonet matched with the outer side of a crank of the insulation resistance megger is formed in the front end of the connecting shaft. The utility model discloses a support and butterfly bolt realize fixed to the insulation resistance megger, then drive the crank rotation of connecting axle and insulation resistance megger through the drive of direct current gear reduction motor, have ensured that the rotational speed of insulation resistance megger is stable, even and accurate to it is efficient.

Description

Insulation resistance megger electric drive device

Technical Field

The utility model relates to an electrical test technical field especially relates to an insulation resistance megger electric drive.

Background

The insulation resistance megger is a commonly used measuring instrument for electricians, and is mainly used for checking the insulation resistance of electrical equipment, household appliances or electrical lines to the ground and between the electrical equipment, the household appliances or the electrical lines so as to ensure that the equipment, the household appliances and the electrical lines work in a normal state and avoid accidents such as electric shock casualties, equipment damage and the like. The megohmmeter generally has three terminals, where L is connected to the insulated conductor part between the object to be measured and the ground, E is connected to the casing or ground of the object to be measured, and G is connected to the shield of the object to be measured or the part not required to be measured. For measuring insulation resistance, only the "L" and "E" terminals are generally used. However, when the insulation resistance of the cable to the ground or the leakage current of the device to be tested is severe, the "G" terminal is used and is terminated with the shielding layer or the housing. After the circuit is connected, the crank handle is rotated clockwise, the shaking speed is controlled to be slow and fast, when the rotating speed reaches about 120 revolutions per minute, the crank handle is kept to rotate at a constant speed, the reading is carried out after 1 minute, and the reading cannot be stopped when the crank handle is shaken. However, in actual operation, on one hand, the rotation speed of 120 revolutions per minute cannot be guaranteed and the constant speed can be kept within 1min, and on the other hand, the operation is carried out while timing and reading are carried out, so that the requirement on testing personnel is too high, and the operation is complex.

SUMMERY OF THE UTILITY MODEL

Not enough more than, the utility model provides an insulation resistance megger electric drive device to solve the uneven, the complicated problem of operation of manual operation rotational speed.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

an electric drive device of an insulation resistance megger comprises a bracket and a direct current gear reduction motor, wherein the bracket is U-shaped, two sides of an opening at the front end of the U-shaped bracket are respectively provided with opposite screw holes, and butterfly screws are arranged on the screw holes in a matching manner; the direct current gear reducing motor is fixedly installed at the rear end of the support, a connecting shaft is fixedly connected to an output shaft of the direct current gear reducing motor, and a bayonet matched with the outer side of a crank of the insulation resistance megger is formed in the front end of the connecting shaft.

Further, the direct current gear reduction motor is connected with the battery through a lead, and a switch is arranged on the lead.

Furthermore, a timer is arranged on the support.

Furthermore, the end part of the butterfly screw is provided with a sheet-shaped blocking piece.

Further, the inner side of the baffle is provided with rubber.

Further, the rotating speed of the direct current gear reduction motor is 120 revolutions per minute.

The utility model has the advantages that:

1. the utility model realizes the fixation of the insulation resistance megger through the bracket and the butterfly bolt, and then drives the connecting shaft and the crank of the insulation resistance megger to rotate through the drive of the direct current gear reducing motor, thereby ensuring the stable, uniform and accurate rotating speed of the insulation resistance megger and high efficiency;

2. the structure of the insulation resistance megger does not need to be changed, the insulation resistance megger is fixed by the butterfly screw on the bracket, the installation and the disassembly are convenient, the start and the stop of the direct current speed reducing motor are controlled by the switch, the time is controlled by the timer, and the operation is convenient and accurate;

3. the utility model has the advantages of the rotational speed is stable accurate, convenient operation, has effectively guaranteed that the test result is accurate, has improved work efficiency.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below.

Fig. 1 is a schematic structural diagram of an embodiment of the present invention;

fig. 2 is a schematic diagram of an embodiment of the present invention.

Wherein the labels shown in the figures are: 1: a bracket, 11: thumb screw, 12: a baffle plate, 2: direct current gear reduction motor, 3: battery, 4: a switch, 5: wire, 6: connecting shaft, 7: timer, 8: insulation resistance megger.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1, the utility model provides an insulation resistance megger electric drive device, mainly include support 1, direct current gear reduction motor 2, battery 3, switch 4, wire 5, even axle 6 and timer 7.

Support 1 is the U-shaped, has seted up relative screw on the open-ended both sides of front end of U-shaped support 1 respectively, the matching is equipped with butterfly screw 11 on the screw, during the installation, can press from both sides steady insulation resistance megger when two opposite butterfly screws 11 are screwed, the tip of butterfly screw 11 is equipped with flaky separation blade 12, when butterfly screw 11 compresses tightly and presss from both sides steady insulation resistance megger, through setting up flaky separation blade 12, can effectively increase area of contact, prevent to press from both sides and hinder insulation resistance megger, damage insulation resistance megger surface. The inboard of separation blade 12 is equipped with rubber, can further avoid pressing from both sides and hinder the insulation resistance megger on the one hand, and on the other hand can rely on the frictional force of rubber, realizes more firm the clamp tightly.

The direct current gear reduction motor 2 is fixedly arranged at the rear end of the support 1, the rotating speed of the direct current gear reduction motor 2 is 120 revolutions per minute, preferably, the model of the direct current gear reduction motor is DM07RA-10519RV, and the voltage is 24V. The direct-current gear reduction motor 2 is connected with the battery 3 through a lead 5, a switch 4 is arranged on the lead 5, the direct-current gear reduction motor 2, the switch 4 and the battery 3 are connected into a loop through the lead 5, and preferably, the battery 3 is a 24V lithium battery. Through setting up battery 3, the electric drive of being convenient for carries out the use, does not receive the restriction of use scene. Fixedly connected with even axle 6 on direct current gear motor 2's the output shaft, even the front end of axle 6 offer with the outside assorted bayonet socket of the crank of insulation resistance megger, even the crank of direct current gear motor 2 and insulation resistance megger 8 is connected to axle 6, during the connection, the bayonet socket card of even axle 6 is on the crank of insulation resistance megger, and direct current gear motor 2's output shaft, the coaxial setting of pivot of the crank of even axle 6 and insulation resistance megger, in order to guarantee the smooth and easy rotation of the crank of insulation resistance megger. The timer 7 is arranged on the bracket 1, preferably, the timer 7 has the model of cp-167, is displayed by liquid crystal, is small and exquisite, can be magnetically adsorbed, and is convenient to disassemble and assemble.

When the insulation resistance megger 8 is used, referring to fig. 2, the insulation resistance megger 8 is placed on the inner side of the front end opening of the support 1, and the butterfly screws 11 on the two sides of the support 1 are screwed so that the butterfly screws 11 and the blocking pieces 12 on the butterfly screws are tightly contacted with the two sides of the insulation resistance megger 8, and the insulation resistance megger 8 and the support 1 are fixed; meanwhile, a bayonet of the connecting shaft 6 is connected with a crank of the insulation resistance megger 8, the output end of the insulation resistance megger 8 is connected, the timer 7 sets time, the switch 4 is closed, the direct-current gear reduction motor 2 is communicated with the battery 3, the direct-current gear reduction motor 2 is started to drive the crank of the insulation resistance megger 8 to rotate at a speed of 120 revolutions per minute through the connecting shaft 6, and the timer 7 is started; when the time of the timer 7 returns to zero, the output of the insulation resistance megger 8 is disconnected, then the switch 4 is disconnected, the direct current gear speed reducing motor 2 stops, and the test is finished.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. An insulation resistance megger electric drive device which characterized in that: the device comprises a bracket (1) and a direct current gear reduction motor (2), wherein the bracket (1) is U-shaped, two sides of an opening at the front end of the U-shaped bracket (1) are respectively provided with opposite screw holes, and butterfly screws (11) are arranged on the screw holes in a matching manner; the direct current gear reducing motor (2) is fixedly installed at the rear end of the support (1), a connecting shaft (6) is fixedly connected to an output shaft of the direct current gear reducing motor (2), and a bayonet matched with the outer side of a crank of the insulation resistance megger is arranged at the front end of the connecting shaft (6).

2. The electric drive of the insulation resistance megger as defined in claim 1, wherein: the direct current gear reduction motor (2) is connected with the battery (3) through a lead (5), and a switch (4) is arranged on the lead (5).

3. The electric drive of the insulation resistance megger as defined in claim 1, wherein: the support (1) is provided with a timer (7).

4. The electric drive of the insulation resistance megger as defined in claim 1, wherein: the end part of the butterfly screw (11) is provided with a sheet-shaped blocking piece (12).

5. The insulation resistance megger electric drive as recited in claim 4, wherein: the inner side of the baffle plate (12) is provided with rubber.

6. The electric drive of the insulation resistance megger as defined in claim 1, wherein: the rotating speed of the direct current gear reduction motor (2) is 120 revolutions per minute.