CN2267545Y

CN2267545Y - Freely swinging guiding type orientation contact engagement box

Info

Publication number: CN2267545Y
Application number: CN 96201358
Authority: CN
Inventors: 李彦彬; 刘俊娟
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-02-02
Filing date: 1996-02-02
Publication date: 1997-11-12
Anticipated expiration: 2006-02-02

Abstract

The utility model relates to a freely swinging guiding type orientation contact engagement box, which is composed of a device base, a device outer casing, a fixed support seat and support frames of a dynamic and a static contact devices. A free guiding device and a guide column are used as a basic positioning device, and a suspended freely swinging plate is used for making any horizontal swinging; the dynamic and the static contacts can always be kept on the same axle, and by utilizing the characteristic of an even direction force static contact and the action of an even pressure positioning spring, the top and the bottom contact positions of the dynamic and the static contacts are always kept on the same axle to ensure the good contact of the dynamic and the static contacts, to avoid the problems which are brought by the bad contact and to prolong the service life of equipment.

Description

The introducing-type directional contactor that freely swings jack box

The utility model belongs to a kind of contact, positioner of dynamic and static contact, relates to a kind of introducing-type directional contactor jack box that freely swings.

In appliance field, finish the break-make of circuit and being in contact with one another of dynamic and static contact of the normal employing of transmission of electric current and finish.So being in contact with one another as a kind of unlatching, closing device and being widely used in distinct device of dynamic and static contact.The way of contact of dynamic and static contact has varied, but its citation form has two big classes: a class is to insert contact; One class is the plane contact formula.

Insert contact and be moving contact under the effect of guiding, positioner, contact fixed contact like clockwork.This way of contact, because equipment is in manufacturing, design, machining, technology assembling process, there are various errors inevitably, easily cause two and in contact process, can not guarantee axiality or isoplanar degree because scale error causes between the dynamic and static contact of conductor with upper conductor, thereby in contact process, cause between two conductors because of loose contact surface heat oxidation and produce high temperature, spray arc and melt weldering.Therefore in actual design, have to error limit value of regulation in the making, assembling process at equipment.As long as be no more than this error limit value, just can meet the demands substantially.For example: all adopt the plug-in type insulating contact in the handcart type high-voltage switch equipment both at home and abroad.Whether when car body pushes in cabinet along track, put in place, locked by navigation system control car, in this contact process, its error size of designing requirement must not be above 5 millimeters before and after up and down.But because the action error of machine-building error, navigation system, gap accumulated error etc. are all multifactor, thereby the error size that makes this equipment is difficult to be controlled at below 5 millimeters, this makes troubles to the good contact of car body and cabinet undoubtedly, has influenced fax and has passed function.Consider that from another point of view this handcart-type equipment requirements has interchangeability, that is: different car bodies should be applicable to different cabinets, and when the car body after the exchange pushed cabinet, the same requirement was no more than the error range of limitting, and this is difficult to guarantee especially.

From above example as can be known, insert the dynamic and static contact contact that the way of contact only is applicable to that the error size is very little, and, obviously be impossible, can only adopt the plane contact formula for the very large dynamic and static contact contact of error size.

The plane contact formula be moving contact under guide locating device provided effect, a kind of mode that contact two planes are in contact with one another.As: in the existing steel rolling industry, the bell-type tempering furnace adopts electrically heated mode, and it is to utilize crane that outer bell-type furnace is inserted in tempering furnace, and after being inserted in, the top contact apparatus promptly is connected with the bottom contact apparatus, to pass through operating current.This wherein because working equipment is bulky, the outer bell-type furnace that crane hung, under hang that nature can produce swing in the process, rotation, thus influence the precision of its contact.Because this equipment itself also has the error size, its error size up and down can reach more than 25 millimeters again.In this case, have to adopt compressed spring type planar contact contact structures.It is to have added compression spring on moving contact, is fixed with a bigger contact-making surface under the fixed contact, and purpose is that its error size that is caused is up and down overcome by stage clip, and the error size of left-right and front-back is overcome by very big contact plane.This way of contact has reduced the loose contact that the error size is brought, but its problem is: owing to added compression spring in the design, electric current flows through spring in the work, must produce a kind of shunting action.Spring energising back self-heating produces annealing, influences the elasticity and the useful life of spring in the course of time, thereby does not satisfy its error dimensional requirement up and down.Even more serious is: the plane contact formula easily causes contact-making surface resistance to strengthen, and produces oxidation, and contact-making surface the spray arc takes place, melts weldering, and pit appears in contact-making surface, causes dynamic and static contact not contact, finally cause device damage.And change that compromised devices faced be: power failure, stopping production, maintain and replace are very difficult.

Therefore the good contact of dynamic and static contact is an an open question always for many years in the industry always.

The purpose of this utility model is a kind of introducing-type directional contactor jack box that freely swings of design, it can make the well contact in the scope that the error size allows of dynamic and static contact, can not come in contact bad and accidents such as weldering are melted in heating that cause, can improve equipment reliability, continuity and stability in use.

The purpose of this utility model realizes by following scheme: the introducing-type directional contactor jack box of being made up of device basic, crust of the device body, hold-down support and sound, contact apparatus support etc. that freely swings, it is to lay a free tourelle of being made up of bearing, ball etc. on hold-down support, its plate that freely swings of having put on the shelf is fixed with many groups respectively all to power fixed contact, contact base and free gatherer by lock nut on the oscillating deck; Be fixed with the motion contact apparatus on the described motion contact apparatus support, be fixed with many groups from seeking formula moving contact and motion guide pillar by lock nut on the insulation fixed head of this device.When moving downward, guide pillar inserts in the free gatherer.Above-mentioned seeking certainly between formula moving contact and insulation fixed head is embedded with a guide pin bushing, is set with equal compression set position spring on it.Spring is not held and the front end place of motion contact end face, is equipped with the insulation adjustment part, described guide pillar and from seek between the formula moving contact manufacturing distance and free gatherer and all the manufacturing between the power fixed contact apart from equating.

Adopt the jack box of this version, fundamentally stopped because make, loose contact that contact-making surface displacement that rigging error causes causes, owing to can accurately locate, every group of contact all can be pushed away be held in best contact position, avoid the problems brought because of loose contact, prolonged useful life.

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

Fig. 2 is the shape and structure schematic diagram of one group of dynamic and static contact in the utility model

Below in conjunction with accompanying drawing and to be with the bell-jar heating furnace that embodiment specifies as follows:

Know from Fig. 1, Fig. 2: 1 is device basic of the present utility model, and 2 is the shell body of this device, is fixed with bearing 3 along housing front, rear, left and right wall, lays free tourelle 4 on the bearing 3.Free tourelle 4 is made up of bearing, ball, can form the fulcrum of several rollings, the fulcrum plate 5 that freely swings of having put on the shelf.Oscillating deck is an insulation board, is fixed with many groups respectively all to power fixed contact 7, contact base 8 and free gatherer 9 by lock nut 6 on it, is provided with guide pin bushing 10 in the free gatherer 9.What all adopt to power fixed contact 7 is the independent standard components and parts, as is damaged, and can take off renewal in the several seconds.The characteristics of this standard component are: it is formed by the independent groups sheet of ring-type, has independently spring leaf.It is used for the moving contact axle center with the stepless action masterpiece of peripheral annular, and can above downforce and change self pressure to the motion contact, so it can keep good contact effect.11 are motion contact apparatus support, are installed with motion contact apparatus 12 on the support.In the present embodiment, 11 is the mounting base of bell type heating furnace mounted movable contact apparatus, the 12nd, and the movable body part of bell type heating furnace.Described telecontrol equipment 12 also includes an insulation fixed head 13, is fixed with many groups respectively from seeking formula moving contact 14 and motion guide pillar 15 by lock nut 6 on it.When moving downward, guide pillar 15 inserts in the gatherer 9 along guide pin bushing 10.This composite set plays first guide effect here, and it can be as a kind of basic fixed position of whole device, for dynamic and static contact is prepared before basic insertion is provided.Be embedded with another guide pin bushing 16 from target-seeking moving

contact

14 and 13 of fixed heads of insulation, it can make from target-seeking moving contact 14 and be free to slide interior, and its sliding stroke can be greater than the worst error value of equipment.The outer race of guide pin bushing 16 is equipped with equal compression set position spring 17.Its role is to: seek moving contact 14 certainly and all contact up and down when error takes place to power fixed contact 7, the pressure of spring acts on moving contact 14, respectively organizes moving contact and all is pressed onto unified position thereby make, and avoids inserting deeply or do not insert phenomenon.All position in face of the contact end of the not end of compression set position spring 17 and moving contact 14 is equipped with insulation adjustment part 18.The effect of insulation adjustment part is: the pressure of making adjustable whole spring 17 of time spent.The more important thing is: owing to be insulating material, in the use, dynamic and static contact contact, circuit turn-on.Because the effect of insulation adjustment part 18 does not have electric current to flow through on the spring 17, can not produce because of complicated factors such as eddy current that shunting produces, magnetic fields, thereby ensure the normal operation of circuit.Owing to do not have electric current to pass through on the spring,, prolonged the useful life of spring and moving contact in addition so itself can not generate heat, anneal.In this device, above-mentioned motion guide pillar 15 and from the manufacturing distance of seeking 14 of formula moving contacts and free gatherer 9 and all to the manufacturing of 7 of power fixed contacts apart from equating.

The introducing-type directional contactor that freely swings jack box, it utilizes free gatherer and guide pillar as the basic fixed position device, utilizes the plate that freely swings that suspends to do horizontal direction swing arbitrarily again, makes dynamic/static contact can maintain on the same axis all the time; It utilizes all to the characteristics of power fixed contact itself and the effect of equal compression set position spring simultaneously, and the contact position up and down of dynamic and static contact is also maintained on the same axis all the time.Ensure the good contact of dynamic and static contact, avoided the problems brought because of loose contact, prolonged the useful life of equipment.

Claims

1, a kind of introducing-type directional contactor jack box of being formed by device basic, crust of the device body, hold-down support and dynamic and static contact apparatus support that freely swings, it is characterized in that: lay free tourelle (4) on the hold-down support (3), its plate (5) that freely swings of having put on the shelf is fixed with many groups respectively all to power fixed contact (7), contact base (8) and free gatherer (9) by lock nut (6) on the oscillating deck; Be fixed with motion contact apparatus (12) on the described motion contact apparatus support (11), the insulation fixed head (13) of this device is gone up by lock nut (6) and is fixed with many groups from seeking formula moving contact (14) and motion guide pillar (15), when moving downward, this guide pillar inserts in the free gatherer (9); Above-mentioned seeking certainly between moving contact (14) and insulation fixed head (13) is embedded with a guide pin bushing (16), and guide pin bushing is set with equal compression set position spring (17) outward, and spring is not held and motion contact (14) contact end is equipped with insulation adjustment part (18) in the position in front; Described motion guide pillar (15) and the manufacturing distance of seeking certainly between formula moving contact (14) reach all manufacturings between power fixed contact (7) apart from equating with free gatherer (9).

2, the introducing-type directional contactor jack box that freely swings according to claim 1, it is characterized in that: free tourelle (4) is made up of bearing, ball.

3, the introducing-type directional contactor jack box that freely swings according to claim 1 is characterized in that: be provided with guide pin bushing (10) in the free gatherer (9).