CN107017132B - Pin penetrating clamp and pin penetrating method for rotating shaft of molded case circuit breaker - Google Patents

Abstract

The invention relates to a pin penetrating clamp, in particular to a rotating shaft pin penetrating clamp of a molded case circuit breaker and a pin penetrating method thereof. The device comprises a workpiece, a support and a connecting block, wherein more than one base is arranged in the support, a groove matched with the bottom of the workpiece is formed in the base, an air cylinder is arranged on the upper portion of the support and drives the connecting block to move up and down, three ejector rods extending downwards are arranged in the support and movably contact with the workpiece along with the downward movement of the connecting block, return springs elastically connected with the support are sleeved outside the ejector rods, and a fastener is arranged in the support and movably fastened with the ejector rods located in the middle. The pin penetrating clamp and the pin penetrating method for the rotating shaft of the molded case circuit breaker are compact in structure, usability is improved, and labor intensity of workers is reduced.

Description

Pin penetrating clamp and pin penetrating method for rotating shaft of molded case circuit breaker

Technical Field

The invention relates to a pin penetrating clamp, in particular to a rotating shaft pin penetrating clamp of a molded case circuit breaker and a pin penetrating method thereof.

Background

The plastic case circuit breaker rotating shaft is a connecting piece between a mechanism and contacts, on one hand, the plastic case circuit breaker rotating shaft transmits the operating force of the mechanism to each phase of moving contacts and needs to have enough strength and rigidity, and on the other hand, the contacts of each phase need to be kept in electric insulation. For the circuit breaker with smaller rated working current, a plastic part is adopted for a common rotating shaft, and for the circuit breaker with larger rated working current, the strength and rigidity of the pure plastic part are insufficient, and a plastic and metal assembly is required. 630A moulded case circuit breaker pivot subassembly, the three-phase moving contact is adorned on it, mainly has the round pin, stainless steel support, moving contact, space ring, spring, guide pin, riveting round pin, the pivot, the board is constituteed, and its structure is like: each phase of moving contact is riveted through a riveting pin, a stainless steel support and a plate are riveted into a whole, a rotating shaft is hooped, a mounting support of the moving contact is formed, a pin sequentially penetrates through holes of the support, the spacer ring, the moving contact, the spacer ring and the support, and the pin is required to penetrate into the holes under the pre-compression state of a spring (the pre-compression force of 2 springs is about 100N), and is precisely matched with the holes of the support and the moving contact (the matching clearance is less than or equal to 0.06mm), so that the assembly of the pin is difficult, and individual pins can not even be installed. Traditional mode of wearing to sell mainly has the hand wheel, the guide block, the briquetting, the base, and the support is constituteed, and its structure is like: the hand wheel is connected with the support through threads, the hand wheel and the guide block can rotate relatively, but the hand wheel and the guide block cannot be separated axially, the pressing block is arranged between the guide block and a workpiece, the appearance of the movable contact is adapted, the movable contact is convenient to press down, in operation, the rotating shaft is arranged in the V-shaped groove of the base, the pressing block is arranged on the movable contact of the rotating shaft, the hand wheel is driven, the guide block is driven to move downwards, the movable contact is slowly pressed down through the pressing block, holes of the support and the movable contact tend to be aligned, then the spacing ring is inserted between the support and the movable contact, a pin is inserted, the pin penetrating structure is simple, the operation is visual, but the rotating shaft is positioned on the V-shaped block through a shell formed by riveting the support and the plate, large errors exist, the stroke is different when the pressing down every time, the hand wheel needs.

Disclosure of Invention

The invention mainly solves the defects in the prior art, and provides the rotating shaft pin penetrating clamp of the molded case circuit breaker and the pin penetrating method thereof, wherein the rotating shaft pin penetrating clamp is compact in structure, further improves the working efficiency, and is less influenced by errors of a positioning surface.

The technical problem of the invention is mainly solved by the following technical scheme:

the utility model provides a moulded case circuit breaker pivot is worn round pin anchor clamps, includes the work piece, still includes support and connecting block, the support in be equipped with more than one base, the base in be equipped with the groove that connects mutually with the work piece bottom, the upper portion of support be equipped with the cylinder, the cylinder drive the connecting block and carry out displacement from top to bottom, the support in be equipped with three downwardly extending's ejector pin, the ejector pin move down along with the connecting block and carry out the activity with the work piece and touch and connect, the ejector pin overcoat have with support looks elastic connection's return spring, the support in be equipped with the fastener, fastener and the ejector pin looks activity fastening that is located the intermediate position.

Preferably, the groove is a V-shaped groove, and the back of the bracket is provided with a guide frame which is sleeved with the ejector rod in an empty way.

Preferably, the support comprises a vertical plate, a support plate which slides transversely along the vertical plate is arranged on the vertical plate, a support column is arranged at the upper part of the support plate, the cylinder is arranged on the support column, and the ejector rod penetrates through the support plate and extends downwards.

Preferably, the upper part of the vertical plate is a T-shaped guide rail, the support plate slides transversely along the vertical plate through the T-shaped guide rail, and the vertical plate and the support plate are stopped through a positioning pin.

Preferably, the fastening piece is a fastening screw, and a baffle plate which is in contact with the workpiece is arranged at the right end of the upper part of the groove.

A pin penetrating method of a pin penetrating clamp for a rotating shaft of a molded case circuit breaker is carried out according to the following steps:

(1) and structural analysis:

the connecting block is fixed on the end part of a piston rod of the cylinder through threads, three ejector rods which are distributed at intervals are arranged at the lower part of the connecting block, the center distance between every two adjacent ejector rods is 11.5mm, the ejector rods can be separated from the connecting block, a return spring is arranged between a flange at the tail part of each ejector rod and a support plate, when a piston rod of the cylinder moves upwards, the three ejector rods can move upwards along with the piston rod under the action of the return spring, the maximum distance of the upward movement is 18mm, a fastening screw is arranged on the side surface of the support plate and used for fastening the ejector rods, after locking, a guide rod cannot move upwards along with the piston rod under the action of the return spring, a screw fixing screw faces to the middle ejector rod, a guide frame is used for guiding the three ejector rods, so that the ejector rods can slide up and down on the guide frame which is fixedly connected with the support plate, the support plate and, the center distance between two adjacent V-shaped blocks is the center distance between contacts at two sides of the workpiece, the size is 140mm, and the rear part of each V-shaped block is provided with a baffle plate for blocking the workpiece, so that the workpiece can be well positioned in the V-shaped groove when the ejector rod is pressed down;

the support plate is provided with a T-shaped groove, the vertical plate is provided with a T-shaped guide rail, the side surface of the guide rail is parallel to the middle line of the V-shaped groove, the support plate can slide left and right on the vertical plate through the T-shaped guide rail so as to meet the requirement of pin penetrating of the three-phase contact, and the pin penetrating mechanism is used for positioning the support plate and the vertical plate at each assembling position by a pin;

(2) assembling a clamp:

fastening the three V-shaped blocks on the base by using screws to ensure that the central lines of the three V-shaped grooves are in the same straight line and are parallel to the reference side surface of the base;

fastening the vertical plate on the base to ensure that the side face of the T-shaped guide rail of the vertical plate is parallel to the reference side face of the base;

the guide frame is fixedly connected with the support plate through screws, the three return springs are respectively sleeved into the three ejector rods, and then the ejector rods are respectively inserted into corresponding holes of the guide frame;

fastening a connecting block at the end part of a piston rod of the cylinder through threads, and fastening the cylinder on a support plate through 4 supports by using screws;

sleeving a T-shaped groove of a support plate into a T-shaped guide rail of a vertical plate, and requiring smooth sliding;

screwing the fastening screw into the corresponding screw hole of the support plate;

mounting three baffles on three V-shaped blocks respectively, and fastening by using screws;

(3) and operation treatment:

the pin threading is carried out according to the sequence of firstly installing the middle phase and then installing the two side phases: the pin penetrating mechanism is moved to a middle phase position to be positioned by a pin, the middle phase of the workpiece is positioned in a middle V-shaped groove, a spring and a guide pin on the workpiece are placed, the air cylinder is started, the piston rod drives the three ejector rods to press downwards through the connecting block, the return spring is compressed, when the ejector rods press the guide pin and the spring on the workpiece to the proper position, the fastening screw is locked, and then the piston rod of the air cylinder moves upwards. The middle ejector rod keeps still, and the both sides ejector rod rises through return spring to vacate the installation space of moving contact, because the moving contact is in free state, make the round pin penetrate and become very easy, work efficiency has obvious promotion, and receives the error influence of locating surface less. After the middle phase contact is inserted with the pin, loosening the fastening screw to enable the middle ejector rod to move upwards under the action of the return spring, then inserting the left moving contact, sliding the pin inserting mechanism leftwards along the vertical plate guide rail, positioning the pin, moving the workpiece leftwards, enabling the left phase contact to be arranged on the left V-shaped block, enabling the right phase contact to be arranged on the middle V-shaped block, and inserting the pin in the same steps as the middle phase after positioning; the pin penetration of the right-side phase contact is also carried out;

(4) and attention points:

the end face of the guide frame must be perpendicular to the guide hole, so that the three ejector rods are ensured to be in a vertical state, the friction resistance when the air cylinder is pressed downwards is reduced, and the flexibility of the three ejector rods in ascending is improved;

in order to improve the rigidity and the strength of the ejector rods, the ejector rods on two sides are designed into a step form, the lower end of the ejector rod is thin, the sight of an operator is good, and the moving contact can conveniently penetrate through pins;

each phase of positioning pin hole of the support plate and the vertical plate is preferably assembled and then assembled, so that the positioning precision of the clamp is improved.

The invention provides a pin penetrating clamp for a rotating shaft of a molded case circuit breaker and a pin penetrating method thereof, which are compact in structure, improve the use performance and reduce the labor intensity of workers.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a side view of the present invention.

Detailed Description

The technical scheme of the invention is further specifically described by the following embodiments and the accompanying drawings.

Example 1: as shown in fig. 1 and 2, the pin penetrating clamp for the rotating shaft of the molded case circuit breaker comprises a workpiece 1, a support 2 and a connecting block 3, wherein more than one base 4 is arranged in the support 2, a groove 5 matched with the bottom of the workpiece 1 is formed in the base 4, an air cylinder 6 is arranged on the upper portion of the support 2, the air cylinder 6 drives the connecting block 3 to move up and down, three ejector rods 7 extending downwards are arranged in the support 2, the ejector rods 7 are in movable contact with the workpiece 1 along with the downward movement of the connecting block 3, return springs 8 elastically connected with the support 2 are sleeved outside the ejector rods 7, a fastening piece 9 is arranged in the support 2, and the fastening piece 9 is movably fastened with the ejector rods 7 located in the middle.

The groove 5 is a V-shaped groove, and the back of the bracket 2 is provided with a guide frame 10 which is sleeved with the mandril 7 in an empty way.

The support 2 comprises a vertical plate 11, a support plate 12 which slides transversely along the vertical plate 11 is arranged on the vertical plate 11, a support column 13 is arranged at the upper part of the support plate 12, the cylinder 6 is arranged on the support column 13, and the push rod 7 penetrates through the support plate 12 and extends downwards.

The upper part of the vertical plate 11 is provided with a T-shaped guide rail 14, the support plate 12 slides transversely along the vertical plate 11 through the T-shaped guide rail 14, and the vertical plate 11 and the support plate 12 are stopped through a positioning pin 15.

The fastening piece 9 is a fastening screw, and a baffle 16 which is in blocking connection with the workpiece 1 is arranged at the right end of the upper part of the groove 5.

A pin penetrating method of a pin penetrating clamp for a rotating shaft of a molded case circuit breaker is carried out according to the following steps:

(1) and structural analysis:

the connecting block is fixed on the end part of a piston rod of the cylinder through threads, three ejector rods which are distributed at intervals are arranged at the lower part of the connecting block, the center distance between every two adjacent ejector rods is 11.5mm, the ejector rods can be separated from the connecting block, a return spring is arranged between a flange at the tail part of each ejector rod and a support plate, when a piston rod of the cylinder moves upwards, the three ejector rods can move upwards along with the piston rod under the action of the return spring, the maximum distance of the upward movement is 18mm, a fastening screw is arranged on the side surface of the support plate and used for fastening the ejector rods, after locking, a guide rod cannot move upwards along with the piston rod under the action of the return spring, a screw fixing screw faces to the middle ejector rod, a guide frame is used for guiding the three ejector rods, so that the ejector rods can slide up and down on the guide frame which is fixedly connected with the support plate, the support plate and, the center distance between two adjacent V-shaped blocks is the center distance between contacts at two sides of the workpiece, the size is 140mm, and the rear part of each V-shaped block is provided with a baffle plate for blocking the workpiece, so that the workpiece can be well positioned in the V-shaped groove when the ejector rod is pressed down;

the support plate is provided with a T-shaped groove, the vertical plate is provided with a T-shaped guide rail, the side surface of the guide rail is parallel to the middle line of the V-shaped groove, the support plate can slide left and right on the vertical plate through the T-shaped guide rail so as to meet the requirement of pin penetrating of the three-phase contact, and the pin penetrating mechanism is used for positioning the support plate and the vertical plate at each assembling position by a pin;

(2) assembling a clamp:

fastening the three V-shaped blocks on the base by using screws to ensure that the central lines of the three V-shaped grooves are in the same straight line and are parallel to the reference side surface of the base;

fastening the vertical plate on the base to ensure that the side face of the T-shaped guide rail of the vertical plate is parallel to the reference side face of the base;

the guide frame is fixedly connected with the support plate through screws, the three return springs are respectively sleeved into the three ejector rods, and then the ejector rods are respectively inserted into corresponding holes of the guide frame;

fastening a connecting block at the end part of a piston rod of the cylinder through threads, and fastening the cylinder on a support plate through 4 supports by using screws;

sleeving a T-shaped groove of a support plate into a T-shaped guide rail of a vertical plate, and requiring smooth sliding;

screwing the fastening screw into the corresponding screw hole of the support plate;

mounting three baffles on three V-shaped blocks respectively, and fastening by using screws;

(3) and operation treatment:

the pin threading is carried out according to the sequence of firstly installing the middle phase and then installing the two side phases: the pin penetrating mechanism is moved to a middle phase position to be positioned by a pin, the middle phase of the workpiece is positioned in a middle V-shaped groove, a spring and a guide pin on the workpiece are placed, the air cylinder is started, the piston rod drives the three ejector rods to press downwards through the connecting block, the return spring is compressed, when the ejector rods press the guide pin and the spring on the workpiece to the proper position, the fastening screw is locked, and then the piston rod of the air cylinder moves upwards. The middle ejector rod keeps still, and the both sides ejector rod rises through return spring to vacate the installation space of moving contact, because the moving contact is in free state, make the round pin penetrate and become very easy, work efficiency has obvious promotion, and receives the error influence of locating surface less. After the middle phase contact is inserted with the pin, loosening the fastening screw to enable the middle ejector rod to move upwards under the action of the return spring, then inserting the left moving contact, sliding the pin inserting mechanism leftwards along the vertical plate guide rail, positioning the pin, moving the workpiece leftwards, enabling the left phase contact to be arranged on the left V-shaped block, enabling the right phase contact to be arranged on the middle V-shaped block, and inserting the pin in the same steps as the middle phase after positioning; the pin penetration of the right-side phase contact is also carried out;

(4) and attention points:

the end face of the guide frame must be perpendicular to the guide hole, so that the three ejector rods are ensured to be in a vertical state, the friction resistance when the air cylinder is pressed downwards is reduced, and the flexibility of the three ejector rods in ascending is improved;

in order to improve the rigidity and the strength of the ejector rods, the ejector rods on two sides are designed into a step form, the lower end of the ejector rod is thin, the sight of an operator is good, and the moving contact can conveniently penetrate through pins;

each phase of positioning pin hole of the support plate and the vertical plate is preferably assembled and then assembled, so that the positioning precision of the clamp is improved.

Claims (1)

1. A pin penetrating method of a pin penetrating clamp of a rotating shaft of a molded case circuit breaker comprises a workpiece (1), a bracket (2) and a connecting block (3), more than one base (4) is arranged in the bracket (2), a groove (5) matched and connected with the bottom of the workpiece (1) is arranged in the base (4), the upper part of the bracket (2) is provided with an air cylinder (6), the air cylinder (6) drives the connecting block (3) to move up and down, three push rods (7) extending downwards are arranged in the bracket (2), the push rods (7) are movably contacted with the workpiece (1) along with the downward movement of the connecting block (3), a return spring (8) elastically connected with the bracket (2) is sleeved outside the ejector rod (7), a fastening piece (9) is arranged in the bracket (2), and the fastening piece (9) is movably fastened with the ejector rod (7) positioned in the middle position;

the groove (5) is a V-shaped groove, and the back of the bracket (2) is provided with a guide frame (10) which is sleeved with the ejector rod (7) in a hollow way;

the support (2) comprises a vertical plate (11), a support plate (12) which slides transversely along the vertical plate (11) is arranged on the vertical plate (11), a support column (13) is arranged at the upper part of the support plate (12), the cylinder (6) is arranged on the support column (13), and the ejector rod (7) penetrates through the support plate (12) and extends downwards;

the upper part of the vertical plate (11) is provided with a T-shaped guide rail (14), the support plate (12) slides transversely along the vertical plate (11) through the T-shaped guide rail (14), and the vertical plate (11) and the support plate (12) are stopped through a positioning pin (15);

the fastening piece (9) is a fastening screw, and a baffle plate (16) which is blocked with the workpiece (1) is arranged at the right end of the upper part of the groove (5); the method is characterized by comprising the following steps:

(1) and structural analysis:

the connecting block is fixed on the end part of a piston rod of the air cylinder through threads, the lower part of the connecting block is provided with three ejector rods which are distributed at intervals, the center distance between every two adjacent ejector rods is 11.5mm, the ejector rods can be separated from the connecting block, a return spring is arranged between a flange at the tail part of each ejector rod and a support plate, when a piston rod of the air cylinder moves upwards, the three ejector rods can move upwards along with the piston rod under the action of the return spring, the maximum distance of the ascending is 18mm, the side surface of the support plate is provided with a fastening screw used for fastening the ejector rods, after the fastening, the ejector rods can not move upwards along with the piston rod under the action of the return spring, the fastening screw faces to the middle ejector rod, the guide frame is used for guiding the three ejector rods, so that the ejector rods can slide upwards and downwards under the action of the guide frame, the guide frame is, the three V-shaped blocks are fastened on the base, the center distance between two adjacent V-shaped blocks is the center distance between contacts on two sides of the workpiece, the size is 140mm, and the rear part of each V-shaped block is provided with a baffle plate for blocking the workpiece, so that the workpiece can be well positioned in the V-shaped groove when the ejector rod is pressed down;

the support plate is provided with a T-shaped groove, the vertical plate is provided with a T-shaped guide rail, the side surface of the guide rail is parallel to the middle line of the V-shaped groove, the support plate can slide left and right on the vertical plate through the T-shaped guide rail so as to meet the requirement of pin penetrating of the three-phase contact, and the support plate and the vertical plate are positioned by a positioning pin at each assembling position of the pin penetrating mechanism;

(2) assembling a clamp:

fastening the three V-shaped blocks on the base by using screws to ensure that the central lines of the three V-shaped grooves are in the same straight line and are parallel to the reference side surface of the base;

fastening the vertical plate on the base to ensure that the side face of the T-shaped guide rail of the vertical plate is parallel to the reference side face of the base;

the guide frame is fixedly connected with the support plate through screws, the three return springs are respectively sleeved into the three ejector rods, and then the ejector rods are respectively inserted into corresponding holes of the guide frame;

fastening a connecting block at the end part of a piston rod of the cylinder through threads, and fastening the cylinder on a support plate through 4 supports by using screws;

sleeving a T-shaped groove of a support plate into a T-shaped guide rail of a vertical plate, and requiring smooth sliding;

screwing the fastening screw into the corresponding screw hole of the support plate;

mounting three baffles on three V-shaped blocks respectively, and fastening by using screws;

(3) and operation treatment:

the pin threading is carried out according to the sequence of firstly installing the middle phase and then installing the two side phases: the pin penetrating mechanism is moved to a middle phase position to be positioned by a positioning pin, the middle phase of the workpiece is positioned in a middle V-shaped groove, a spring and a guide pin on the workpiece are put well, an air cylinder is started, a piston rod drives three ejector rods to press downwards through a connecting block, a return spring is compressed, when the ejector rods press the guide pin and the spring on the workpiece to be in place, a fastening screw is locked, and then the piston rod of the air cylinder moves upwards; the middle ejector rod is kept still, the ejector rods on the two sides are lifted through the return springs to vacate the installation space of the moving contact, and the moving contact is in a free state, so that the pin penetration is very easy, the working efficiency is obviously improved, and the influence of errors of a positioning surface is small; after the middle phase contact is inserted with the pin, loosening the fastening screw to enable the middle ejector rod to move upwards under the action of the return spring, then inserting the left moving contact, sliding the pin inserting mechanism leftwards along the vertical plate guide rail, positioning the pin, moving the workpiece leftwards, enabling the left phase contact to be arranged on the left V-shaped block, enabling the right phase contact to be arranged on the middle V-shaped block, and inserting the pin in the same step as the middle phase after positioning; the pin penetration of the right-side phase contact is also carried out;

the end face of the guide frame must be perpendicular to the guide hole, so that the three ejector rods are ensured to be in a vertical state, the friction resistance when the air cylinder is pressed downwards is reduced, and the flexibility of the three ejector rods in ascending is improved;

in order to improve the rigidity and the strength of the ejector rods, the ejector rods on two sides are designed into a step form, the lower end of the ejector rod is thin, the sight of an operator is good, and the moving contact can conveniently penetrate through pins;

each phase of positioning pin hole of the support plate and the vertical plate is preferably assembled and then assembled, so that the positioning precision of the clamp is improved.

Images