CN102331568B - Secondary wire pressing mechanism for error testing - Google Patents

Abstract

A secondary crimping mechanism for error testing relates to a secondary crimping mechanism for a transformer. At present, the wiring of the secondary terminal is manually used in the error and magnetic desire tests of the transformer. Due to the large number of secondary terminals and the need for repeated wiring for different tests, the work is heavy and the efficiency is low. The present invention is characterized in that it includes a frame body, a strip-shaped insulating block arranged under the frame body, a cylinder arranged between the frame body and the insulating block for driving the insulating block to move up and down, and a guide rod connected to the frame body and the insulating block And a plurality of side-by-side test probes arranged on the insulating block for crimping with the secondary end of the transformer; the upper end of the test probe is connected to the wire, and the lower end is used to connect with the secondary winding of the transformer to be tested Crimp end of terminal crimp. A plurality of test probes can be connected to the secondary terminals of multiple transformers at the same time, and the wiring to the secondary terminals of the transformers can be automatically completed to improve work efficiency.

Description

Secondary crimping mechanism for error test

technical field

The invention relates to a secondary crimping mechanism of a transformer.

Background technique

At present, when the error and magnetic desire test of the transformer is carried out, the wiring of the secondary terminal is manually used. When testing multiple transformers at the same time, due to the large number of secondary terminals and repeated wiring for different tests, it takes a lot of time to connect in the current test, the workload is heavy and the efficiency is low.

Contents of the invention

The technical problem to be solved and the technical task proposed by the present invention are to perfect and improve the existing technical solutions, and to provide a secondary crimping mechanism for error testing, so as to achieve the purpose of automatic wiring. For this reason, the present invention takes the following technical solutions.

The secondary crimping mechanism for error test is characterized in that it includes a frame body, a strip-shaped insulating block arranged under the frame body, a cylinder for driving the insulating block to move up and down between the frame body and the insulating block, and a connecting The guide rod on the frame body and the insulating block and a plurality of test probes arranged side by side for crimping with the secondary end of the transformer on the insulating block; the upper end of the test probe is connected to the wire, and the lower end is used for The crimping end that is crimped with the secondary winding terminal of the transformer under test. When working, the cylinder drives the insulating block to descend, so that the test probe located on the insulating block is connected to the secondary end of the transformer. A plurality of test probes can be connected to the secondary terminals of multiple transformers at the same time, and the wiring to the secondary terminals of the transformers can be automatically completed to improve work efficiency.

As a further improvement and supplement to the above technical solutions, the present invention also includes the following additional technical features.

There are two cylinders between the frame and the insulating block, and the two cylinders are located at both ends of the insulating block. The cylinder body of the cylinder is installed vertically downward on the lower end of the frame through the connecting plate, and the movable end of the cylinder is fixed on the insulating block through the bottom plate. The upper is used to provide the driving force for the up and down movement of the insulating block. Two air cylinders contribute to the smooth downward movement of the insulating block.

The lower end surface of the frame body is provided with two nut mounting grooves, and nut blocks are embedded in the grooves, the connecting plate is locked with the nut blocks in the nut mounting grooves through screws, and the cylinder body of the cylinder is fixed on the lower end surface of the connecting plate through connecting pieces. Realize that the cylinder block is fixed on the frame body.

The test probe cover has a spring, and the insulating block is provided with a plurality of test probe sockets matching the test probe, and the middle part of the test probe is provided with a shoulder for offsetting the spring, and the test probe cover Connect the spring and insert it into the test probe socket. The lower end of the test probe is provided with an external thread to be screwed with the copper head used to abut against the secondary end of the transformer; one end of the spring is abutted against the shoulder of the test probe, and the other end is The insulating block is pressed against each other to provide a suitable pressing force when the test probe and the secondary terminal of the transformer are pressed against each other, so that the two can be electrically connected reliably and at the same time avoid damage. The spring of the jacket of the test probe helps to transmit the driving force of the cylinder to the copper head that is opposed to the secondary end of the transformer smoothly and reliably, and the electrical connection is reliable.

The upper and lower ends of the test probe jack are provided with internal threads to be screwed with the external threads of the two bushings respectively; the bushing at the upper end of the test probe is provided with an inner thread between its lower end surface and the shoulder of the test probe. There is a spring covering the test probe; in standby mode, the shoulder of the test probe is in conflict with the bushing located at the lower end of the test probe socket under the elastic force of the spring.

The guide rod is provided with 12 test probe jacks arranged side by side to insert 12 test probes respectively, so that the secondary winding wiring of 6 transformers can be completed at the same time by a single crimping action. . Up to 6 transformers can be connected at the same time.

There are two guide rods connecting the frame body and the insulating block. The lower end of the guide rod is fixed on the insulating block through a flange. Sliding bearings for rods.

A guide rod hole is provided with two sliding bearings respectively fixed to the upper and lower end surfaces of the insulating block through screws.

The wire connected to the upper end of the test probe is connected to the transformer calibrator to detect the secondary winding current during the error test of the transformer. The lower end of the copper head is chamfered to avoid the insulation barrier between the secondary winding of the transformer during crimping. block interference.

The test probe and the upper-end connecting wire together form the secondary winding circuit wiring required for the error verification of the transformer. The secondary circuit impedance required for transformer verification.

Beneficial effects: a plurality of test probes can be connected to the secondary terminals of multiple transformers at the same time, and the wiring to the secondary terminals of the transformers is automatically completed, thereby improving work efficiency.

Description of drawings

Fig. 1 is a schematic diagram of the structure of the present invention.

Fig. 2 is a schematic diagram of the blasting structure of the present invention.

Fig. 3 is a schematic diagram of a half-section structure of the present invention.

In the figure: 1-frame, 2-insulation block, 3-cylinder, 4-test probe, 5-connecting plate, 6-bottom plate, 7-spring, 8-copper head, 9-shaft sleeve, 10-flange , 11-sliding bearing, 12-guide rod.

Detailed ways

The technical solution of the present invention will be further described in detail below in conjunction with the accompanying drawings.

As shown in Figures 1-3, the present invention includes a frame body 1, a strip-shaped insulating block 2 arranged under the frame body 1, a cylinder 3 arranged between the frame body 1 and the insulating block 2 to drive the insulating block 2 to move up and down, The guide rod 12 connected to the frame body 1 and the insulating block 2 and a plurality of test probes 4 arranged side by side for crimping with the secondary end of the transformer on the insulating block 2, the upper end of the test probe 4 is connected to the wire . Two air cylinders 3 are arranged between the frame body 1 and the insulating block 2, and the two air cylinders 3 are arranged at both ends of the insulating block 2. The movable end is fixed on the insulating block 2 through the bottom plate 6 to provide driving force for the up and down movement of the insulating block 2. Two nut mounting grooves are provided on the lower end surface of the frame body 1, and nut blocks are embedded in the grooves. The connecting plate 5 is locked with the nut blocks in the nut mounting grooves by screws, and the cylinder body of the cylinder 3 is fixed on the bottom of the connecting plate 5 through connecting pieces. The end face realizes that the cylinder body of the cylinder 3 is fixed on the frame body 1 . The test probe 4 is covered with a spring 7, and the insulating block 2 is provided with a plurality of test probe jacks, and the middle part of the test probe 4 is provided with a shoulder for offsetting the spring 7. The probe socket, the lower end of the test probe 4 is provided with an external thread to be screwed with the copper head 8 used to abut against the secondary end of the transformer; one end of the spring 7 is abutted against the shoulder of the test probe 4, and the other end is insulated The blocks 2 offset each other so that the test probe 4 can reliably contact the secondary end of the transformer after the insulating block 2 moves down. The upper and lower ends of the test probe socket are provided with internal threads to be screwed with the external threads of the two shaft sleeves 9 respectively; A spring 7 covering the test probe 4 is provided; in standby mode, the shoulder of the test probe 4 is in conflict with the bushing 9 located at the lower end of the test probe socket under the elastic force of the spring 7 . The guide rod 12 is provided with 12 test probe sockets arranged side by side to insert 12 test probes 4 respectively. There are two guide rods 12 connecting the frame body 1 and the insulating block 2, the lower end of the guide rod 12 is fixed on the insulating block 2 through the flange 10, the frame body 1 is provided with a guide rod hole for passing the guide rod 12, one There are two sliding bearings 11 fixedly connected with the upper and lower end surfaces of the insulating block 2 by screws respectively in the guide rod hole. The wire connected to the upper end of the test probe 4 is connected to the transformer calibrator to detect the secondary winding current during the error test of the transformer. Insulation stop interferes. The test probe 4 and the connecting wire at the upper end together constitute the secondary winding circuit wiring required for the error verification of the transformer. The secondary circuit impedance of the transformer test.

The secondary crimping mechanism can complete the crimping of the secondary windings of six transformers at the same time. During the error test, the test probe 4 and the upper connecting wire are in a short-circuit state, and the six transformers are sequentially connected to the transformer by switching the relays in turn. In the calibrator, the error test is carried out in accordance with the transformer verification regulations.

The secondary crimping mechanism for the error test shown in the above Figures 1-3 is a specific embodiment of the present invention, which has embodied the substantive features and progress of the present invention, and can be used according to actual needs under the inspiration of the present invention , equivalent modification of its shape, structure, etc., are all within the scope of protection of this scheme.

Claims (8)

1. for the secondary line-pressing mechanism of error test, it is characterized in that: comprise support body (1), be located at support body (1) below strip collets (2), be located between support body (1) and collets (2) cylinder (3) for driving collets (2) to move up and down, be connected to the guide rod (12) on support body (1) and collets (2) and be located at collets (2) and go up for a plurality of test prods that are arranged side by side (4) with the crimping of mutual inductor secondary terminals; The upper end of described test prod (4) connects wire, and lower end is the pressure connection terminal for the Secondary Winding terminal crimping with tested mutual inductor; Described test prod (4) overcoat has spring (7), collets (2) are provided with a plurality of test prod jacks that match with test prod (4), described test prod (4) middle part establish for and the convex shoulder that offsets of spring (7), insert the test prod jack after test prod (4) socket spring (7), the lower end of test prod (4) is established external thread and is spirally connected with the copperhead (8) with for offseting with the mutual inductor secondary terminals; The convex shoulder of spring (7) one ends and test prod (4) offsets, and its other end and collets (2) offset and avoid damage when test prod (4) offsets with the mutual inductor secondary terminals when providing suitable snap-in force that both reliably are electrically connected to.

2. the secondary line-pressing mechanism for error test according to claim 1, it is characterized in that: between support body (1) and collets (2), be provided with two cylinders (3), two cylinders (3) are divided into the two ends of collets (2), the cylinder body of cylinder (3) is arranged on the lower surface of support body (1) vertically downward by web joint (5), the movable end of cylinder (3) is fixed on collets (2) and is used to moving up and down of collets (2) that driving force is provided by base plate (6).

3. the secondary line-pressing mechanism for error test according to claim 2, it is characterized in that: two nut mounting grooves are offered in described support body (1) lower surface, groove is embedded with nut block, web joint (5) is by the locking of the nut block in screw and nut mounting groove, and the lower surface that the cylinder body of cylinder (3) is fixed on web joint (5) by web member realizes that cylinder (3) cylinder body is fixed on support body (1).

4. the secondary line-pressing mechanism for error test according to claim 1 is characterized in that: the upper and lower side of described test prod jack be equipped with internal thread with respectively with the external thread bolt connection of two axle sleeves (9); Be positioned at the axle sleeve (9) of test prod (4) upper end, be provided with between the convex shoulder of its lower surface and test prod (4) and be coated at test prod (4) describedspring (7); When standby, the convex shoulder of test prod (4) exists describedunder the elastic force effect of spring (7), with the axle sleeve (9) that is positioned at test prod jack lower end, conflict.

5. the secondary line-pressing mechanism for error test according to claim 4 is characterized in that: described collets (2) are provided with 12 test prod jacks side by side 12 test prods (4) of pegging graft respectively makes single crimping action can complete the Secondary Winding wiring of 6 mutual inductors simultaneously.

6. the secondary line-pressing mechanism for error test according to claim 1, it is characterized in that: the guide rod (12) that connects support body (1) and collets (2) is two, the lower end of guide rod (12) is fixed on collets (2) by flange (10), support body (1) is provided with for wearing the guide rod hole of guide rod (12), is provided with the sliding bearing (11) that is coated at guide rod (12) in guide rod hole.

7. the compression joint mechanism of the secondary for error test according to claim 1, it is characterized in that: the Secondary Winding electric current of the wire that is connected with test prod (4) upper end access mutual-inductor tester when detecting the transformer error test, copperhead (8) lower end establish chamfering with avoid when the crimping with the mutual inductor Secondary Winding in the middle of the insulating spacer interference.

8. the compression joint mechanism of the secondary for error test according to claim 1, is characterized in that: described test prod (4) and upper end connectconnect wire and jointly formed transformer error and examine and determine required Secondary Winding circuit connection, the secondary circuit impedance that contact resistance during test prod (4) crimping is connected wire resistance sum with upper end is the ct calibrating that need meet measurement verification regulations and require.

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