CN210893638U

CN210893638U - Sensor fixing device for speed test of circuit breaker

Info

Publication number: CN210893638U
Application number: CN201921668727.1U
Authority: CN
Inventors: 陈曦; 芦宇峰; 苏毅; 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: 2020-06-30
Anticipated expiration: 2029-10-08

Abstract

The utility model discloses a sensor fixing device is used in test of circuit breaker speed, including fixed plate and the base of setting in the fixed plate top, the bottom of base still is equipped with the support frame, fixed mounting has positive reverse motor on the support frame, fixed mounting gear on the output shaft of positive reverse motor, the gear both sides have meshed first rack and second rack respectively, be equipped with logical groove on the base, the up end of first rack and second rack is fixed respectively and is equipped with a supporting shoe, the supporting shoe passes logical groove, the top of supporting shoe is equipped with first baffle and second baffle respectively, and when first rack slides with the second rack, first baffle and second baffle are close to or keep away from mutually. The utility model discloses a positive and negative motor drives the mode of rack and pinion, orders about first baffle and second baffle relative motion and fixed with the sensor centre gripping, uses manpower sparingly, need not artifical hand fixing device to avoided the sensor to drop or throw away from the connecting rod of circuit breaker, endangered the bad consequence of experimental personnel safety.

Description

Sensor fixing device for speed test of circuit breaker

Technical Field

The utility model relates to an electrical equipment detects technical field, especially relates to a sensor fixing device is used in test of circuit breaker speed.

Background

The circuit breaker speed test is an important test item for checking the safe and reliable action of the circuit breaker, and according to the regulation: the opening and closing speed, the opening and closing time, the three-phase opening and closing synchronism and the like of the circuit breaker are required to meet the regulations of technical conditions, so that the authenticity and the accuracy of test result data are required to be ensured during testing so as to provide reliable reference data for the handover and state evaluation of the circuit breaker, and during testing, the sensor is firmly fixed on a circuit breaker connecting rod to accurately transmit the action conditions of the circuit breaker connecting rod and a connecting shaft to a testing instrument so as to acquire and record characteristic data such as the opening and closing speed and the like.

However, the sensor is easily separated from the connecting rod of the breaker or thrown out due to the influence of huge energy released when the breaker is switched on and off, so that the sensor is damaged and the safety of testers is endangered.

SUMMERY OF THE UTILITY MODEL

Not enough more than, the utility model provides a sensor fixing device is used in test of circuit breaker speed can be when the circuit breaker test, and the centre gripping sensor of being convenient for effectively avoids the sensor easily to drop or throw away from the connecting rod of circuit breaker.

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

a sensor fixing device for a circuit breaker speed test comprises a fixing plate, wherein a plurality of loop bars are arranged on the top surface of the fixing plate, a base is arranged above the fixing plate, and the fixing plate is connected with the base through the loop bars; a support frame is further fixedly arranged at the bottom end of the base, a forward and reverse rotating motor is fixedly arranged on the support frame, an output shaft of the forward and reverse rotating motor is vertically upward, a gear is fixedly arranged on the output shaft of the forward and reverse rotating motor, a first rack and a second rack which are horizontally arranged are respectively meshed with two sides of the gear, and the first rack is parallel to the second rack; the base is provided with a straight through groove which penetrates through the top end and the bottom end of the base at positions corresponding to the first rack and the second rack respectively, a slide rail is arranged on the through groove along the length direction, a slide block is arranged on the slide rail, a supporting block is fixedly arranged on the upper end faces of the first rack and the second rack respectively, the supporting block penetrates through the through groove, the middle of the supporting block is fixedly connected with the slide block, a first baffle plate is fixedly arranged at the top end of one supporting block, a second baffle plate is fixedly arranged at the top end of the other supporting block, the first baffle plate and the second baffle plate are arranged oppositely, and when the first rack and the second rack slide, the first baffle plate and the second baffle plate are close to or far away from each other.

Preferably, the first baffle and the second baffle are of semicircular annular structures with inner sides sunken inwards, and a layer of rubber pad is fixedly attached to the inner sides of the first baffle and the second baffle.

Preferably, the top surface of the fixed plate is provided with more than three annular grooves, and the sleeve rods are inserted in the annular grooves and can do circular motion in the annular grooves.

Preferably, every the upper end sliding sleeve of loop bar is equipped with the slide bar, the top of slide bar with the bottom fixed connection of base, still the cover is equipped with the spring on the slide bar, the one end of spring with the top of loop bar contacts, the other end with the bottom of base contacts.

Preferably, two screw holes are further formed in two sides of the fixing plate, screws are matched in the screw holes, and the fixing plate is fixed with the circuit breaker through the screws in the implementation process.

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

1. the utility model drives the gear rack by the positive and negative rotating motor, drives the first baffle and the second baffle to move in opposite directions and clamps and fixes the sensor, thereby saving manpower, being convenient to operate and avoiding the adverse consequence that the sensor drops or throws away from the connecting rod of the circuit breaker and endangers the safety of testers due to the fact that a manual fixing device is not needed;

2. by arranging the sliding rod and the spring, when the sensor is severely influenced to vibrate, the vibration can be transmitted to the spring, and the spring reduces the vibration amplitude through reciprocating motion, so that the sensor can be effectively prevented from falling off or throwing away, and the sensor is prevented from being damaged and endangering the safety of testers;

3. open on the fixed plate and have the annular groove, the loop bar can be circular motion in the annular groove, and circular motion also can be thereupon to base and first baffle and second baffle etc to can adjust the angle of connection of sensor and circuit breaker, need not to dismantle the sensor and reinstall, raise the efficiency, and convenient operation.

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 front view of the present invention;

fig. 2 is a side view (partial cross-sectional view) of the present invention;

fig. 3 is a cross-sectional view taken along the line a-a in fig. 2 according to the present invention.

Wherein the labels shown in the figures are: 1-a fixed plate, 2-a screw, 3-a circular groove, 4-a loop bar, 5-a slide bar, 6-a spring, 7-a base, 8-a support frame, 9-a gear, 10-a first rack, 11-a second rack, 12-a positive and negative rotation motor, 13-a through groove, 14-a support block, 15-a first baffle, 16-a second baffle, 17-a slide rail and 18-a slide block.

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.

Please refer to fig. 1 to 3, a preferred embodiment of the present invention provides a sensor fixing device for testing speed of a circuit breaker, including a fixing plate 1, the top surface of the fixing plate 1 is provided with four loop bars 4, the top of the fixing plate 1 is provided with a base 7, the upper end of each loop bar 4 is slidably sleeved with a slide bar 5, specifically, the upper end of each loop bar 4 is hollow and open, the bottom end of each slide bar 5 is inserted into the hollow part of the upper end of each loop bar 4, the top end of each slide bar 5 is connected with the bottom end of the base 7 by welding, the slide bar 5 is further sleeved with a spring 6, one end of the spring 6 contacts with the top end of the loop bar 4, and the other end contacts with.

The bottom end of the base 7 is further fixedly provided with a supporting frame 8, and the supporting frame 8 is fixedly provided with a forward and reverse rotation motor 12, it should be noted that the forward and reverse rotation motor 12 used in the preferred embodiment is a conventional forward and reverse rotation motor capable of realizing forward and reverse rotation, and the use of the forward and reverse rotation motor to realize forward and reverse rotation output is a technical means well known to those skilled in the art, and a specific implementation manner thereof is not described herein. An output shaft of the forward and reverse rotation motor 12 is vertically upward, a gear 9 is fixedly installed on the output shaft of the forward and reverse rotation motor 12, a first rack 10 and a second rack 11 which are horizontally arranged are respectively meshed with two sides of the gear 9, and the first rack 10 is parallel to the second rack 11.

The base 7 is provided with a straight through groove 13 penetrating through the top end and the bottom end of the base 7 at positions corresponding to the first rack 10 and the second rack 11, respectively, and the through groove 13 is a straight through groove which is overlapped and corresponding to the first rack 10 and the second rack 11 on the horizontal projection. The through groove 13 is provided with a slide rail 17 along the length direction, the slide rail 17 is provided with a slide block 18, and the slide block 18 can slide on the slide rail 17 along the length direction of the slide rail 17. The upper end surfaces of the first rack 10 and the second rack 11 are respectively and fixedly provided with a supporting block 14, the supporting block 14 passes through the through groove 13, the middle part of the supporting block 14 is fixedly connected with the sliding block 18, and the first rack 10 and the second rack 11 are arranged in a suspended mode under the action of the supporting block 14, the sliding rail 17 and the sliding block 18 and can only move along the length direction of the first rack 10 and the second rack 11. The top end of one of the supporting blocks 14 is fixedly provided with a first baffle 15, and the top end of the other supporting block 14 is fixedly provided with a second baffle 16. When the forward and reverse rotation motor 12 is started, the gear 9 can be driven to rotate, and the first rack 10 and the second rack 11 meshed with the gear 9 do linear motion in opposite directions in the length direction of the through groove 13. The first shutter 15 and the second shutter 16 are disposed to face each other and when the first rack 10 and the second rack 11 slide, the first shutter 15 and the second shutter 16 approach or move away from each other. When the first rack 10 and the second rack 11 slide, the supporting block 14 is driven, the supporting block 14 moves in the through groove 13 and drives the first baffle 15 and the second baffle 16 to approach or separate from each other, when the first baffle 15 and the second baffle 16 approach each other, the first baffle 15 and the second baffle 16 can clamp the sensor, and when the first baffle 15 and the second baffle 16 separate from each other, the clamping of the sensor is released.

In a preferred embodiment, the first baffle 15 and the second baffle 16 are semi-circular ring structures with inner sides (opposite sides) recessed inwards, and a layer of rubber pad is fixed on the inner sides of the first baffle 15 and the second baffle 16. The semicircular structure is adapted to the shape of the sensor, and the rubber pads on the inner sides of the first baffle 15 and the second baffle 16 have certain elasticity, so that the sensor shell is protected, and the sensor is prevented from being damaged by clamping.

The top surface of the fixed plate 1 is provided with a circular groove 3, four loop bars 4 are provided, and the loop bars 4 are inserted in the circular groove 3 and can do circular motion in the circular groove 3. During implementation, the base 7 is rotated, so that the loop bar 4 performs circular motion in the circular groove 3, the direction of the sensor can be changed, the connection angle between the sensor and the breaker can be adjusted, the sensor does not need to be detached and then installed again, the operation is easy, and the time is saved.

The both sides of fixed plate 1 still are provided with two screws, and the matching is equipped with screw 2 in the screw, and fixed plate 1 is fixed with the circuit breaker through screw 2 during the implementation, need not that the staff is handheld, can prevent effectively that the sensor from droing or throwing away, endangers test personnel safety.

One implementation manner in the preferred embodiment is as follows: fixing a fixed plate 1 with a circuit breaker through a screw 2, placing a sensor between semicircular annular grooves of a first baffle 15 and a second baffle 16, starting a forward and reverse rotation motor 12 on a support plate 8 to enable a gear 9 to start rotating, enabling a first rack 10 and a second rack 11 to move in opposite directions due to being meshed at two sides of the gear 9, driving the first baffle 15 and the second baffle 16 to move in opposite directions and approach to the sensor until the sensor is clamped tightly, enabling a rubber pad on the inner walls of the first baffle 15 and the second baffle 16 to give a certain elasticity to a contact surface of the sensor, thereby protecting a sensor shell, stopping the forward and reverse rotation motor 12 at the moment to enable the circuit breaker to start working, enabling the sensor to receive working information of the circuit breaker to realize testing, when the sensor is influenced by huge energy released when the circuit breaker is switched on and off, enabling the sensor to vibrate, and pushing a sliding rod 5 downwards through a base 7, so that the sliding rod 5 slides downwards in the loop bar 4, the spring 6 is compressed, and the vibration amplitude of the sensor is reduced by the spring 6 through reciprocating motion, thereby ensuring the stability of the sensor, preventing the sensor from falling off or throwing away, and avoiding the damage of the sensor and endangering the safety of testers.

If the connecting direction of the sensor and the breaker needs to be changed, new data are measured, only the base 7 needs to be rotated, the loop bar 4 makes circular motion in the circular groove 3, the direction of the sensor is changed, the sensor does not need to be detached and then installed again, operation is easy, and time is saved.

After the test is finished, the forward and reverse rotation motor 12 is controlled to rotate reversely, the gear 9 rotates reversely, the first rack 10 and the second rack 11 move reversely under the action of the gear 9, and the first baffle 15 and the second baffle 16 are driven to move away from each other, so that the sensor is clamped.

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. A sensor fixing device for a circuit breaker speed test comprises a fixing plate (1) and is characterized in that a plurality of loop bars (4) are arranged on the top surface of the fixing plate (1), a base (7) is arranged above the fixing plate (1), and the fixing plate (1) is connected with the base (7) through the loop bars (4); a support frame (8) is further fixedly arranged at the bottom end of the base (7), a forward and reverse rotating motor (12) is fixedly arranged on the support frame (8), an output shaft of the forward and reverse rotating motor (12) is vertically upward, a gear (9) is fixedly arranged on the output shaft of the forward and reverse rotating motor (12), a first rack (10) and a second rack (11) which are horizontally arranged are respectively meshed with two sides of the gear (9), and the first rack (10) is parallel to the second rack (11); the base (7) is respectively provided with a straight through groove (13) which penetrates through the top end and the bottom end of the base (7) at the position corresponding to the first rack (10) and the second rack (11), the through groove (13) is provided with a slide rail (17) along the length direction, the slide rail (17) is provided with a slide block (18), the upper end faces of the first rack (10) and the second rack (11) are respectively and fixedly provided with a supporting block (14), the supporting block (14) penetrates through the through groove (13), the middle part of the supporting block (14) is fixedly connected with the slide block (18), the top end of one supporting block (14) is fixedly provided with a first baffle plate (15), the top end of the other supporting block (14) is fixedly provided with a second baffle plate (16), the first baffle plate (15) and the second baffle plate (16) are arranged oppositely, and when the first rack (10) and the second rack (11) slide, the first baffle (15) and the second baffle (16) are close to or far away from each other.

2. The fixing device of claim 1, wherein the first and second blocking plates (15, 16) are semi-circular structures with inner sides recessed inwards, and a layer of rubber pad is fixed on the inner sides of the first and second blocking plates (15, 16).

3. The fixing device of the sensor for testing the speed of the circuit breaker according to claim 1, wherein the top surface of the fixing plate (1) is provided with more than three annular grooves (3), and the sleeve rods (4) are inserted into the annular grooves (3) and can move circularly in the annular grooves (3).

4. The sensor fixing device for the speed test of the circuit breaker according to any one of claims 1 to 3, wherein a sliding rod (5) is slidably sleeved on an upper end of each loop bar (4), a top end of each sliding rod (5) is fixedly connected with a bottom end of the base (7), the sliding rod (5) is further sleeved with a spring (6), one end of each spring (6) is in contact with a top end of the loop bar (4), and the other end of each spring is in contact with a bottom end of the base (7).

5. The fixing device of the sensor for testing the speed of the circuit breaker according to claim 1, wherein two screw holes are further formed on two sides of the fixing plate (1), screws (2) are matched in the screw holes, and the fixing plate (1) is fixed with the circuit breaker through the screws (2) in the implementation process.