CN211698082U

CN211698082U - Special termination of circuit breaker test

Info

Publication number: CN211698082U
Application number: CN201921669328.7U
Authority: CN
Inventors: 芦宇峰; 苏毅; 陈曦; 谢植飙; 王佳琳
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: 2019-10-08
Filing date: 2019-10-08
Publication date: 2020-10-16
Anticipated expiration: 2029-10-08

Abstract

The utility model discloses a special wiring device for circuit breaker test, which comprises a test box, wherein a motor is fixedly arranged on the test box, an output shaft of the motor is fixedly connected with a horizontally arranged threaded rod, two threads with opposite turning directions are arranged on the threaded rod, and threaded sleeves are respectively matched and sleeved on the two threads with opposite turning directions; a fixed rod parallel to the threaded rod is fixedly arranged in the test box and above the threaded sleeve, two sliding sleeves are slidably sleeved on the fixed rod, and one sliding sleeve is connected with one threaded sleeve through a limiting column; the lower ends of the two threaded sleeves are respectively and rotatably connected with a transmission rod, the lower ends of the two transmission rods are rotatably connected to a pushing rod arranged at the same level, two ends of the pushing rod are respectively and slidably sleeved with a contactor, and each contactor is connected with a lead which penetrates out of the test box. The utility model discloses because the unexpected condition takes place for misoperation when can avoid the staff directly to touch the contactor, strengthened the security.

Description

Special termination of circuit breaker test

Technical Field

The utility model relates to an electrical measurement equipment technical field especially relates to a special termination of circuit breaker test.

Background

The circuit breaker is widely applied to in the various circuits in life, because the important position of circuit breaker in circuit system for the circuit breaker can only put into normal operating after strict test is used, and during the test, the tester generally can test whether up to standard the quality of circuit breaker through control current and voltage's big or small range.

However, when the circuit breaker is locked, high-intensity current and voltage are needed, the test difficulty is high, the safety performance of the existing test device is insufficient, when high current and voltage are used during testing, current breakdown devices can occur even, and damage to workers is avoided.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problem that the security is not enough and work efficiency is low when carrying out the circuit breaker test among the prior art, and the special termination of circuit breaker test that a security is high, work efficiency is very fast that proposes.

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

a wiring device special for circuit breaker testing comprises a testing box, wherein a motor is fixedly installed on the testing box, an output shaft of the motor is fixedly connected with a horizontally arranged threaded rod, two threads with opposite turning directions are arranged on the threaded rod, and threaded sleeves are sleeved on the two threads with opposite turning directions in a matched mode; a fixed rod parallel to the threaded rod is fixedly arranged in the test box and above the threaded sleeve, two sliding sleeves are slidably sleeved on the fixed rod, and one sliding sleeve is connected with one threaded sleeve through a limiting column; two the telescopic lower extreme of screw thread rotates respectively to be connected with a transfer line, two the lower extreme of transfer line rotates to be connected on the pushing ram of same root level setting, the two of pushing ram slides respectively the cover and is equipped with a contactor, every be connected with one on the contactor and wear out the wire of test box.

Preferably, limiting plates are fixedly arranged at two ends of the push rod.

Preferably, one end of the threaded rod, which is far away from the motor, is rotatably connected with the inner side wall of the test box.

Preferably, the lower ends of the two threaded sleeves are fixedly provided with connecting seats, the upper ends of the transmission rods are rotatably connected with the connecting seats, the pushing rod is fixedly provided with a collecting seat, and the lower ends of the two transmission rods are rotatably connected with the collecting seat.

Preferably, the contactor includes the slip post, the side on the upper portion of slip post is equipped with the through-hole that runs through, the slip post is located on the pushing ram through the through-hole slip cap, the bottom of slip post is inlayed and is equipped with the contact, the wire with the contact is connected, a vertical, intercommunication have been seted up on the top of slip post the recess of the through-hole of slip post, vertically in the recess establish the spacer pin, the spacer pin is connected so that through spacing spring and the up end of slip post the spacer pin has the trend that the through-hole removed, be equipped with a plurality ofly on the pushing ram with spacer pin assorted draw-in groove.

Preferably, be equipped with two splint that set up in opposite directions in the bottom of test box, two one side that splint carried on the back mutually all is connected with the inside wall of test box through clamping spring.

Preferably, the test box, the transmission rod and the push rod are made of insulating materials.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model drives the rotation of the threaded rod to the threaded sleeve by the motor, and then pushes the contactor downwards by the transmission of the transmission rod and the pushing rod, thereby avoiding the accident caused by misoperation when the hand directly touches the contactor, and enhancing the safety;

2. by arranging the push rod and the contactors, the two contactors can slide on the push rod, so that the distance and the relative position of the two contactors can be adjusted, different types and sizes of circuit breakers can be tested by adjusting the positions of the contactors, the measurement by replacing a testing device is avoided, and the working efficiency of the testing work is greatly improved;

3. the test box, the transmission rod and the push rod are made of insulating materials, so that the device is prevented from being damaged due to overlarge current, even the workers are threatened, and the operation safety is further improved.

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 view (partial sectional view) of the present invention;

FIG. 2 is an enlarged view of the structure at A in FIG. 1;

fig. 3 is a schematic view (partially cut away) of the present invention in use under test.

In the figure: the circuit breaker comprises a test box 1, a motor 2, a threaded rod 3, a threaded sleeve 4, a lead 5, a transmission rod 6, a pushing rod 7, a contactor 8, a limiting plate 9, a fixing rod 10, a sliding sleeve 11, a limiting column 12, a connecting seat 13, a collecting seat 14, a sliding column 15, a contact 16, a limiting pin 17, a limiting spring 18, a clamping groove 19, a clamping plate 20, a clamping spring 21 and a circuit breaker 22.

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 and 2, a preferred embodiment of the present invention provides a wiring device special for circuit breaker testing, including a testing box 1, a motor 2 is fixedly mounted on the testing box 1, the motor 2 is fixedly mounted on the outer side wall of the testing box 1, and the model of the motor 2 is Y80M 2-2. The output shaft of motor 2 passes the lateral wall of test box and fixedly connected with threaded rod 3 that a level set up, is equipped with two sections on the threaded rod 3 and revolves to opposite screw thread, revolves to the opposite screw thread on two sections and all matches and cup joints threaded sleeve 4. Threaded rod 3 is being kept away from the one end of motor 2 and is being connected with 1 inside wall of test box is rotated, specifically is equipped with rolling bearing on the inside wall of test box 1, the tip of threaded rod 3 and rolling bearing's interior week fixed connection. The fixed dead lever 10 that is parallel with threaded rod 3 is fixed to be equipped with in the test box 1, the top of threaded sleeve 4, and the both ends of dead lever 10 are fixed to be set up on the inside wall of test box 1, and the slip cap is equipped with two sliding sleeve 11 on the dead lever 10, and a sliding sleeve 11 is connected with a threaded sleeve 4 through spacing post 12. Specifically, the arrangement of the two threads with opposite turning directions enables the two threaded sleeves 4 respectively sleeved on the threaded rod 3 to move close to or away from each other under the limiting action of the fixed rod 10, the sliding sleeve 11 and the limiting column 12 when the threaded rod 3 rotates.

The lower extreme of two threaded sleeve 4 rotates respectively and is connected with a transfer line 6, and the lower extreme of two transfer lines 6 rotates to be connected on the pushing ram 7 of same root level setting, and the sliding sleeve is equipped with a contactor 8 respectively at the both ends of pushing ram 7, is connected with a wire 5 of wearing out test box 1 on every contactor 8. In practice, the conductor 5 is connected to an external power supply to introduce the voltage and current necessary for the circuit breaker test.

Preferably, the lower ends of the two threaded sleeves 4 are fixedly provided with connecting seats 13, the upper ends of the transmission rods 6 are rotatably connected with the connecting seats 13, the pushing rod 7 is fixedly provided with a collecting seat 14, and the lower ends of the two transmission rods 6 are rotatably connected with the collecting seat 14. When the two threaded sleeves 4 move close to or away from each other, the push rod 7 moves downwards or upwards under the action of the two transmission rods 6, so that the two contactors 8 on the push rod 7 move downwards or upwards together without hands directly pushing the contactors 8, accidents caused by misoperation when hands directly touch the contactors 8 are avoided, and safety is improved.

With reference to fig. 1 and fig. 2, in the preferred embodiment, the contactor 8 includes a sliding column 15, a through hole is formed in a side surface of an upper portion of the sliding column 15, the sliding column 15 is slidably sleeved on the pushing rod 7 through the through hole, a contact 16 is embedded in a bottom end of the sliding column 15, the wire 5 is connected to the contact 16, the wire 5 extends through two sides of the test box 1, the wire 5 does not pass through an upper side of the test box 1, so that a mechanism in the test box 1 is prevented from winding the wire, the device is prevented from being damaged, and current and voltage during testing of the circuit breaker can be controlled through the wire 5. The top of slip post 15 is seted up a vertical, the through-hole's of intercommunication slip post 15 recess, and vertical the setting up in the recess has a spacing round pin 17, and the top of spacing round pin 17 is connected with the up end of slip post 15 through spacing spring 18 so that spacing round pin 17 has the trend of removing to the through-hole under the effect of spacing spring 18, is equipped with a plurality of draw-in grooves 19 with spacing round pin 17 assorted on push rod 7. Specifically, as the side surface of the upper part of the sliding column 15 is provided with the through hole, the sliding column 15 is slidably sleeved on the push rod 7 through the through hole, so that the sliding column 15 can freely slide along the axis of the push rod 7, the distance between the two contactors 8 and the corresponding position can be correspondingly adjusted for different types or sizes of circuit breakers, and the requirement for testing most of the circuit breakers can be met; moreover, due to the existence of the limit pin 17, the limit spring 18 and the clamping groove 19 (when the limit pin 17 is opposite to the clamping groove 19, the bottom end of the limit pin 17 is located in the limit groove 19 under the action of the limit spring 18), the contactor 8 can be kept in a fixed state (i.e. the contactor 8 can be kept fixed) in a normal state, so as to ensure the safety of the test. Limiting plates 9 are fixedly arranged at two ends of the push rod 7, and due to the arrangement of the limiting plates 9, the sliding column 15 can be prevented from sliding out of the push rod 7 due to misoperation when the sliding column 15 slides. Two contactors 8 can slide on the pushing ram for interval, the relative position of two contactors 8 are adjustable, through the method of adjustment contactor position, can test different grade type and big or small circuit breaker, remove from to change testing arrangement and measure, have improved test work's work efficiency greatly.

Be equipped with two splint 20 that set up in opposite directions in the bottom of test box 1, one side that two splint 20 carried on the back mutually all is connected with the inside wall of test box 1 through clamping spring 21. The setting of splint 20 and clamping spring 21 when measuring the circuit breaker of equidimension not, all can carry out effectual centre gripping to the circuit breaker, and the circuit breaker takes place the skew when avoiding measuring, influences measuring result.

The test box, the transmission rod 6 and the push rod 7 are made of insulating materials, so that damage to the device caused by overlarge current is avoided, even workers are threatened, and the operation safety is further improved.

The utility model discloses a schematic operation flow as follows:

referring to fig. 2 and 3, when the circuit breaker 22 needs to be tested, the two clamping plates 20 in the test box 1 are pushed away towards two sides, the clamping spring 21 contracts due to the pushing away of the clamping plates 20, the circuit breaker 22 is placed between the two clamping plates 20 at this time, the clamping plates 20 are released, and since the clamping spring 21 is in a compressed state before the clamping plates are released, the clamping spring 21 pushes the two clamping plates 20 towards opposite directions due to elastic stress after the clamping plates 20 are released, and the circuit breaker 22 is clamped between the two clamping plates 20 after the two sides of the circuit breaker 22 are abutted and pushed tightly, so that the stable clamping of the circuit breaker 22 is completed;

after the clamping operation is completed, aiming at the test position of the current test breaker 22, the distance and the relative position of the two contactors 8 are adjusted, when the adjustment is started, the limit pin 17 is pulled upwards, the limit spring 18 is elongated, the lower end of the limit pin 17 is separated from the clamping groove 19 in the push rod 7 at the moment, the limitation on the sliding column 15 is removed, the sliding column 15 slides along the axis of the push rod 7, after the corresponding positions of the two contactors 8 are found, the limit pin 17 is released, and under the action of the limit spring 18, the lower end of the limit pin 17 enters the corresponding clamping groove 19, so that the position fixation of the contactors 8 is completed;

after the position of the contactor 8 is fixed, the motor 2 is turned on, the motor 2 starts to work, the output shaft of the motor 2 drives the threaded rod 3 to start to rotate, the rotation of the threaded rod 3 drives two threads with opposite rotation directions to start to rotate, the two threaded sleeves 4 sleeved on the threaded rod 3 start to move relatively along the axial direction of the threaded rod 3 due to the rotation of the threaded rod 3, the two threaded sleeves 4 move relatively to drive the connecting seats 13 at the lower ends of the threaded sleeves 4 to start to move, the gathering seats 14 rotatably connected at the lower ends of the transmission rods 6 are fixedly connected to the push rods 7, so that the two transmission rods 6 are mutually drawn together and push the push rods 7 downwards, the push rods 7 move to drive the two contactors 8 to move downwards, the contacts 16 on the two contactors 8 are abutted to the test positions of the circuit breaker 22 under the action of the transmission rods 6 and the push rods 7, and the power supply, the electric power is conducted to the contact 16 through the lead 5, and the contact 16 transmits the electric power into the breaker 22, namely, the measurement work is started;

after the measurement is completed, the output shaft of the motor 2 is reversed, the output shaft of the motor 2 drives the threaded rod 3 to rotate reversely, the threaded rod 3 rotating reversely enables the two threaded sleeves 4 to move towards directions away from each other, the movement of the threaded sleeves 4 drives the lower end transmission rod 6 to enable the push rod 7 to retract upwards, the retraction of the push rod 7 drives the two contactors 8 to retract upwards, after the contactors 8 return to the initial position, the power supply to the motor 2 is stopped, the motor 2 stops running, the mechanism in the test box 1 stops working, at the moment, the clamp plates 20 are pushed to the two sides of the test box 1, the tested circuit breaker 22 is taken out, after the circuit breaker is taken out, the clamp plates 20 are released, under the acting force of the clamping springs 21, the clamp plates 20 return to the initial position, and.

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. The wiring device special for the circuit breaker test comprises a test box (1), and is characterized in that a motor (2) is fixedly mounted on the test box (1), an output shaft of the motor (2) is fixedly connected with a horizontally arranged threaded rod (3), two sections of threads with opposite rotating directions are arranged on the threaded rod (3), and threaded sleeves (4) are sleeved on the two sections of threads with opposite rotating directions in a matched manner; a fixed rod (10) parallel to the threaded rod (3) is fixedly arranged in the test box (1) and above the threaded sleeve (4), two sliding sleeves (11) are slidably sleeved on the fixed rod (10), and one sliding sleeve (11) is connected with one threaded sleeve (4) through a limiting column (12); two the lower extreme of threaded sleeve (4) rotates respectively and is connected with a transfer line (6), two the lower extreme of transfer line (6) rotates to be connected on push rod (7) that same root level set up, the two of push rod (7) slide respectively the cover be equipped with one contactor (8), every be connected with one on contactor (8) and wear out wire (5) of test box (1).

2. The wiring device special for testing the circuit breaker according to claim 1, wherein limiting plates (9) are fixedly arranged at both ends of the push rod (7).

3. The wiring device special for testing the circuit breaker according to claim 1, wherein the threaded rod (3) is rotatably connected with the inner side wall of the test box (1) at one end far away from the motor (2).

4. The special wiring device for the circuit breaker test according to claim 1, wherein the lower ends of the two threaded sleeves (4) are fixedly provided with a connecting seat (13), the upper end of the transmission rod (6) is rotatably connected with the connecting seat (13), the push rod (7) is fixedly provided with a collecting seat (14), and the lower ends of the two transmission rods (6) are rotatably connected with the collecting seat (14).

5. The circuit breaker test specific wiring device of claim 1, wherein the contactor (8) comprises a sliding post (15), the side surface of the upper part of the sliding column (15) is provided with a through hole, the sliding column (15) is sleeved on the push rod (7) through the through hole in a sliding way, a contact (16) is embedded at the bottom end of the sliding column (15), the lead (5) is connected with the contact (16), the top end of the sliding column (15) is provided with a vertical groove communicated with the through hole of the sliding column (15), a limiting pin (17) is vertically arranged in the groove, the limiting pin (17) is connected with the upper end surface of the sliding column (15) through a limiting spring (18) so that the limiting pin (17) has the tendency of moving towards the through hole under the action of the limiting spring (18), and a plurality of clamping grooves (19) matched with the limiting pins (17) are arranged on the pushing rod (7).

6. The wiring device special for testing the circuit breaker according to claim 1, wherein two clamp plates (20) are arranged in the bottom of the test box (1) in opposite directions, and the opposite sides of the two clamp plates (20) are connected with the inner side wall of the test box (1) through clamping springs (21).

7. The wiring device special for breaker test according to claim 1, wherein the test box, the transmission rod (6) and the push rod (7) are made of insulating material.