CN201430100Y

CN201430100Y - Automatic pull rod

Info

Publication number: CN201430100Y
Application number: CN2009201579162U
Authority: CN
Inventors: 平进库; 赵建华
Original assignee: NORTH CHINA GRID CO Ltd ZHANGJIAGANG POWER SUPPLY Co
Current assignee: Zhangjiakou Power Supply Co Of Jibei Electric Power Co ltd; State Grid Corp of China SGCC
Priority date: 2009-06-02
Filing date: 2009-06-02
Publication date: 2010-03-24
Anticipated expiration: 2019-06-02

Abstract

The utility model relates to an automatic pull rod, belonging to the technical field of electric special tool; wherein in original pull rod, the top end of an insulation rod is provided with a top hook contactor, the high-voltage explosion fuse switch of high voltage circuit has high close resistance, and the close operation may be completed difficultly, thereby improving labor strength and reduceclosing accuracy. The technical scheme of the automatic pull rod includes that the upper end of a support rod is provided with a movable contactor, an ejection pin, a baffle A, a baffle B, a baffle C, a weight block, a compression spring, a return spring, an impact block, an insulation block, an adjusting screw and a trigger mechanism are equipped in the support rod. When in use, the top hook ofthe movable contactor is restricted to press the ejection pin to move, thereby compressing the compression spring and automatically triggering the weight block to impact the top hook seat of the movable contactor, the movable contactor acts pressure on the high-voltage explosion fuse switch instantly to close the switch. The automatic pull rod has the advantages of simple operation and accurate closing process, and can improve labor strength of operator and working efficiency.

Description

Automatic brake pull-rod

Technical field

The utility model relates to electrician's specific purpose tool technical field, specifically a kind of automatic brake pull-rod.

Background technology

Brake pull-rod is a kind of electrician's instrument commonly used in the electric power system, be usually used in multiple power switches such as ultra-high-tension power transmission line drop type high-voltage fuse switch, isolating switch, electrical equipment operate a switch and closing operation.Existing brake pull-rod is installed a top dog contact for the insulating bar top, in actual mechanical process,, debugging discomfort etc. reason outmoded owing to equipment, usually bring very big difficulty to the operating personnel, resistance was bigger when drop type high-voltage fuse switch closed a floodgate, and the combined floodgate operation often needs multi-pass operation, has increased electrician's labour intensity and work difficulty, reduced the accuracy rate of closing a floodgate, even because of the excessive damage that causes equipment such as drop type high-voltage fuse switch of exerting oneself.

Summary of the invention

The purpose of this utility model provides a kind of automatic brake pull-rod, can solve in the existing brake pull-rod use waste time and energy, problems such as repeatable operation, combined floodgate are not in place, inefficiency, reduced when closing a floodgate damage to power equipments such as drop type high-voltage fuse switches.

The technical solution of the utility model is made up of movable contact, pressure pin, push rod, dividing plate A, dividing plate B, dividing plate C, hammer piece, fairlead, groups of springs, spring M, impact block, collets, adjusting bolt, trigger mechanism; Pressure pin is a tubular, and the pressure pin inner upper end has dividing plate A, lower end to have dividing plate C, centre by screw dividing plate B to be arranged by screw by screw; The central authorities of dividing plate A, dividing plate B, hammer piece all have through hole; Have several air vent holes on the dividing plate A;

Movable contact is made up of top dog, top dog seat and pressure pin head; The pressure pin headgear is contained in the pressure pin upper end, and pressure pin crown end is fixed with the top dog seat, has axially directed hole on the pressure pin head, and the pressure pin upper end is assembled together by the pin in the pilot hole that is assemblied in the pressure pin head; Push rod passes the through hole of dividing plate A, dividing plate B central authorities; The push rod upper end has axially directed groove, and an end of top dog has counterbore, and insert in the counterbore of top dog the push rod upper end, and spacing jump ring is contained in push rod and stretches on the section of top dog counterbore; Top dog stretches in the top dog seat, and the top dog seat is connected by pin with top dog, and pin is embedded in the gathering sill of push rod;

The push rod lower end is equipped with trigger mechanism, and trigger mechanism is made up of hook, pull bar, spring N, triggering seat; The pull bar two ends respectively with trigger seat and link up with hingedly, hook is connected with push rod by bearing pin, triggers in the counterbore of the slide bar insertion push rod tail end on the seat; Spring N is sleeved on the slide bar that triggers seat, and two ends act on the tail end that triggers seat and push rod respectively;

Impact block one end has a boss, and the other end passes the through hole of dividing plate A central authorities, is assemblied on the dividing plate A by jump ring, is set with spring M on the impact block section between boss and the dividing plate A, and two ends act on boss and dividing plate A respectively; There is the adjusting bolt in dividing plate C central authorities by screw fit, regulate on the bolt and dispose nut, and regulating bolt one end has collets by screw fit;

From up to down be set with hammer piece and groups of springs on the push rod between dividing plate A and the dividing plate B successively, groups of springs is made up of pressure spring and return spring; Fairlead is sleeved on the push rod, and the wedge shape boss of fairlead one end cooperates with hook, and the other end passes the through hole and the groups of springs of dividing plate B central authorities, and is connected with the hammer piece by screw thread, has axial slide on the fairlead, and the pin that resets passes the chute pin joint on push rod; Pressure spring acts on dividing plate B and hammer piece, and return spring acts on dividing plate B and resets pin, and return spring is sleeved on pressure spring in the heart.

When carrying out closing operation and since drop type high-voltage fuse switch when closing a floodgate resistance bigger, the top dog compressing push rod that is obstructed, make pressure pin go deep into pressure pin head depths, owing to be articulated on the wedge shape boss of fairlead, fairlead traction hammer piece moves the stressed contraction of pressure spring and return spring simultaneously; When the triggering seat of trigger mechanism touches collets, continue firmly, then the slide bar of collets compressing triggering seat gos deep into the counterbore depths of push rod tail end, the wedge shape boss that pull bar is stirred hook and fairlead breaks away from, under the effect of pressure spring, the hammer piece is ejected the impact piece, and impact block bump top dog seat makes movable contact moment to the drop type high-voltage fuse switch engagement switch of exerting pressure.After top dog left drop type high-voltage fuse switch, resistance disappeared, and push rod resets under the effect of return spring, triggered seat and resetted under the effect of spring N, and hook hangs on the wedge shape boss of fairlead again.

The utility model has the advantages that: easy and simple to handle, close a floodgate accurately, reduced labor intensity of operating personnel, the operating efficiency that has improved.

Description of drawings

Fig. 1 is a structural representation of the present utility model

Fig. 2 is a work schematic diagram of the present utility model

Embodiment

Reset pin, 10 pressure springs, 11 return springs, 12 hooks, 13 pull bars, 14 of 1 top dog among the figure, 2 top dog seats, 3 push rods, 4 impact blocks, 5 pressure pin heads, 6 pressure pins, 7 hammer pieces, 8 fairleads, 9 triggers seats, 15 collets, 16 adjusting bolts, 17 chutes, A dividing plate, B dividing plate, C dividing plate, M spring, N spring.

Embodiment 1

From Fig. 1, Fig. 2 as can be known, the utility model is made up of movable contact, push rod 3, impact block 4, pressure pin 6, hammer piece 7, fairlead 8, groups of springs, collets 15, adjusting bolt 16, dividing plate A, dividing plate B, dividing plate C, spring M, trigger mechanism; Pressure pin 6 is a tubular, and pressure pin 6 inner upper end have dividing plate A, lower end to have dividing plate C, centre by screw dividing plate B to be arranged by screw by screw; The central authorities of dividing plate A, dividing plate B, hammer piece 7 all have through hole; Have several air vent holes on the dividing plate A.

Movable contact is made up of top dog 1, top dog seat 2 and pressure pin head 5; Pressure pin head 5 is sleeved on pressure pin 6 upper ends, and pressure pin head 5 top interference fit are fixed with top dog seat 2, have axially directed hole on the pressure pin head 5, and pressure pin 6 upper ends are assembled together by the pin in the pilot hole that is assemblied in pressure pin head 5; When pressure pin head 5 when pressure pin 6 top axials move, pin slides in the pilot hole of pressure pin head 5; Push rod 3 passes the through hole of dividing plate A, dividing plate B central authorities; Push rod 3 upper ends have axially directed groove, and an end of top dog 1 has counterbore, and insert in the counterbore of top dog 1 push rod 3 upper ends, and spacing jump ring is contained in push rod 3 and stretches on the section of top dog 1 counterbore; Top dog 1 stretches in the top dog seat 2, and top dog seat 2 and top dog 1 are connected by pin, and pin is embedded in the gathering sill of push rod 3;

Push rod 3 lower ends are equipped with trigger mechanism, and trigger mechanism is made up of hook 12, pull bar 13, spring N, triggering seat 14; Pull bar 13 two ends respectively with trigger seat 14 and link up with 12 hingedly, hook 12 is connected with push rod 3 by bearing pin, triggers in the counterbore of slide bar insertion push rod 3 tail ends of 14 upper end; Spring N is sleeved on the slide bar that triggers seat 14, and two ends act on the tail end that triggers seat 14 and push rod 3 respectively;

Impact block 4 one ends have a boss, and the other end passes the through hole of dividing plate A central authorities, are assemblied on the dividing plate A by jump ring, are set with spring M on 4 sections of the impact blocks between boss and the dividing plate A, and two ends act on boss and dividing plate A respectively; There is the bolt 16 of adjusting in dividing plate C central authorities by screw fit, regulate bolt 16 1 ends and collets 15 are arranged by screw fit, regulate on the bolt 16 and dispose nut, adjusting the adjusting bolt makes brake pull-rod under normal conditions, make collets and trigger distance between the seat less than the movement travel (being the movement length of movable contact) of movable contact along guide hole, and by nut check;

From up to down be set with hammer piece 7 and groups of springs on the push rod 3 between dividing plate A and the dividing plate B successively, groups of springs is made up of pressure spring 10 and return spring 11, fairlead 8 is sleeved on the push rod 3, the wedge shape boss of fairlead 8 one ends cooperates with hook 12, the other end passes the through hole and the groups of springs of dividing plate B central authorities, and by screw thread with the hammer piece 7 be connected, have axial slide on the fairlead 8, the pin 9 that resets passes the chute pin joint on push rod 3; Pressure spring 10 acts on dividing plate B and hammer piece 7, and return spring 11 acts on dividing plate B and resets pin 9, and return spring 11 is sleeved on pressure spring 10 in the heart.

When carrying out closing operation, because resistance was bigger when drop type high-voltage fuse switch closed a floodgate, top dog 1 is obstructed and oppresses push rod 3, make pressure pin 6 go deep into pressure pin head 5 depths, because hook 1 is articulated on the wedge shape boss of fairlead 8, fairlead 8 traction hammer pieces 7 move pressure spring 10 and return spring 11 stressed contractions simultaneously; When the triggering seat 14 of trigger mechanism touches collets 15, continue firmly, then the slide bar of collets 15 compressing triggering seats 14 gos deep into the counterbore of push rod 3 tail ends, the wedge shape boss that pull bar 13 is stirred hook 12 and fairlead 8 breaks away from, under the effect of pressure spring 10, hammer piece 7 is ejected impact pieces 4, and impact block 4 bump top dog seats 2 make movable contact moment to the drop type high-voltage fuse switch engagement switch of exerting pressure.After top dog 1 left drop type high-voltage fuse switch, resistance disappeared, and push rod 3 resets under the effect of return spring 11, triggered seat 14 and resetted under the effect of spring N, and hook 12 hangs on the wedge shape boss of fairlead 8 again.

Pressure pin 6 should use the insulating material manufacturing; According to the operation requirement, the lower end of pressure pin 6 can connect the length that increases bar increase bar handle by screw thread.

Claims

1, a kind of automatic brake pull-rod is characterized in that: be made up of movable contact, push rod (3), impact block (4), pressure pin (6), hammer piece (7), fairlead (8), collets (15), adjusting bolt (16), dividing plate (A), dividing plate (B), dividing plate (C), groups of springs, spring (M), trigger mechanism; Pressure pin (6) is a tubular, and pressure pin (6) inner upper end has dividing plate (A), lower end to have dividing plate (C), centre by screw dividing plate (B) to be arranged by screw by screw; The central authorities of dividing plate (A), dividing plate (B), hammer piece (7) all have through hole; Have several air vent holes on the dividing plate (A);

Movable contact is made up of top dog (1), top dog seat (2) and pressure pin head (5); Pressure pin head (5) is sleeved on pressure pin (6) upper end, and pressure pin head (5) top is fixed with top dog seat (2), and the pressure pin head has axially directed hole on (5), and pressure pin (6) upper end is assembled together by the pin in the pilot hole that is assemblied in pressure pin head (5); Push rod (6) passes the through hole of dividing plate (A), dividing plate (B) central authorities; Push rod (3) upper end has axially directed groove, and an end of top dog (1) has counterbore, and insert in the counterbore of top dog (1) push rod (3) upper end, and spacing jump ring is contained in push rod (3) and stretches on the section of top dog (1) counterbore; Top dog (1) stretches in the top dog seat (2), and top dog seat (2) is connected by pin with top dog (1), and pin is embedded in the gathering sill of push rod (3);

Push rod (3) lower end is equipped with trigger mechanism, and trigger mechanism is made up of hook (12), pull bar (13), spring (N), triggering seat (14); Pull bar (13) two ends are hinged with triggering seat (14) and hook (12) respectively, and hook (12) is connected with push rod (3) by bearing pin, trigger a slide bar of (14) upper end and insert in the counterbore of push rod (3) tail end; Spring N is sleeved on the slide bar that triggers seat (14), and two ends act on the tail end that triggers seat (14) and push rod (3) respectively;

Impact block (4) one ends have a boss, and the other end passes the through hole of dividing plate (A) central authorities, are assemblied on the dividing plate (A) by jump ring, are set with spring (M) on impact block (4) section between boss and the dividing plate (A), and two ends act on boss and dividing plate (A) respectively; There is adjusting bolt (16) in dividing plate (C) central authorities by screw fit, regulate on the bolt (16) and dispose nut, and regulating bolt (16) one ends has collets (15) by screw fit;

From up to down be set with hammer piece (7) and groups of springs on the push rod (3) between dividing plate (A) and the dividing plate (B) successively, groups of springs is made up of pressure spring (10) and return spring (11), fairlead (8) is sleeved on the push rod (3), the wedge shape boss of fairlead (8) one ends cooperates with hook (12), the other end passes the through hole and the groups of springs of dividing plate (B) central authorities, and by screw thread with the hammer piece (7) be connected, have axial slide (17) on the fairlead (8), the pin that resets (9) passes chute (17) pin joint on push rod (3); Pressure spring (10) acts on dividing plate (B) and hammer piece (7), and return spring (11) acts on dividing plate (B) and resets pin (9), and return spring (11) is sleeved on pressure spring (10) in the heart.

2, a kind of automatic brake pull-rod as claimed in claim 1 is characterized in that: described pressure pin (6) lower end can be by the growth bar that is threaded.