CN1115128A

CN1115128A - Connecteur electrique omnidirectionnel a plusieurs phases

Info

Publication number: CN1115128A
Application number: CN95105084A
Authority: CN
Inventors: 艾伦·施艾德
Original assignee: Sait Mining SA
Current assignee: Sait Mining SA
Priority date: 1994-05-06
Filing date: 1995-05-05
Publication date: 1996-01-17
Also published as: FR2719705A1; EP0681351A1; PL176950B1; ATE173361T1; DE69505879D1; FR2719705B1; EP0681351B1; PL308435A1; ES2124986T3; ZA953631B; DE69505879T2

Abstract

The invention relates to an omnibearing electric connector which is provided with two mutually connecting components (1, 2) that can move comparatively. Each component is provided with hollow insulating tubes (11, 12) that support conducting rings, mutually stagger coaxial annular clapboards (15, 16, 17) are arranged on the hollow insulating tubes, and each side wall of the clapboards is provided with the conducting rings (22, 23, 24) respectively corresponding to each phase of power; when the two connecting components (1, 2) are inserted together, the connecting components faces each other at the conducing ring on the other component. One of the two conducting rings facing each other is provided with an annular groove, and a multi-point contact metal contact ring placed inside the annular groove realizes conducting connection. The invention is especially applied to the connector of power source.

Description

Comprehensive multiphase electrical connector

The present invention relates to the comprehensive multiphase electrical connector of a no relative position requirement, the joint between its formation power cable or the joint of power cable and power distribution cabinet.

In industrial quarters, particularly in mining industry, some machine, for example coalcutter is driven by three phase mains, and its voltage is between 1,000 volt to 12,000 volts, and electric current can meet or exceed 500 amperes.Power leads corresponding to each phase is arranged in the cable used herein, and attached and safe lead, be used for to attached electric device, for example lighting device is powered.Usually the length of electrical cable is 50 meters, and its external diameter surpasses 60 millimeters usually, and Unit Weight reaches every meter several kilograms.

The rigidity of the weight of power cable and major diameter copper conductor makes that being connected connector becomes very difficult with the operation that is communicated with industrial power.

In fact, at present the electrical cnnector of the connection power supply that uses all has the orientation indication, must be with two positions indications to together when promptly connector inserts.

Like this, make plug be in the tram, so that insert connector, it must be rotated and adjust around vertical symmetry axis, and because the quality of cable is very big, torsional rigidity be higher, this is very difficult.

In mining industry, usually need three people to make joint efforts just to make orientation Warning Mark on the connector plug and the bearing marker on socket or other jockey to together.

There is another shortcoming of the electrical cnnector of orientation Warning Mark to be: once parts are to move mutually after connecting.In fact, after connector connected, in the machine works process that is powered, cable produced through regular meeting and reverses.This makes connector be subjected to bigger twisting resistance inevitably, and connector can not compensate this power.This power can make the impaired even damage of connector.

The present invention is exactly in order to address these problems.The present invention has designed a multiphase electrical connector that no orientation requires, and it is used for the connection of power cable, does not have the orientation to instigate sign on two parts of formation joint.

According to the present invention, the front end face of plug can be combined with the front end face of another link of socket or connector and insert this socket or link, and needn't consider their relative bearing.

Because this new achievement, with an industrial machine, the coalcutter in the colliery for example, by a power cable and connector of the present invention and power supply, three phase mains for example, the process of connection becomes very convenient.Particularly before connecting, no longer need plug around its vertical symmetry axis left rotation and right rotation, so that its definite orientation corresponding and socket or other corresponding component.So just avoided cable is rotated, because the quality and the rigidity of cable are bigger, rotation is very difficult, make an operator just can power supply and machine or two cables be connected with each other, and do not need special effort.

According to a complementary characteristics of the present invention, we also are provided with the fixture of a power cable, pass to the pulling force of avoiding cable on the interconnector of comprehensive connector.

Technical characterstic of the present invention and other advantage can show by following description to the example that is without loss of generality, and relevant accompanying drawing is:

-Fig. 1 is for a longitudinal axis mapping of plug of the present invention, in order to see the major part of plug inside, partly cut-away;

-Fig. 2 is identical with the visual angle of Fig. 1, shows the part take apart, and the relative position of itself and Fig. 1 is marked by one section horizontal linear;

-Fig. 3 is the cutaway view of jockey of the present invention by vertical symmetry axis;

-Fig. 4 is identical with the visual angle of Fig. 1, shows the part that constitutes the plug body overcoat;

-Fig. 5 is for partly cut-away's axonometric drawing of the plug ends of connector of the present invention, so that see inner case;

-Fig. 6 is the axonometric drawing of the contact ring of a conducting ring of taking apart and correspondence;

The transverse cross-sectional view of the contact ring that one section expansion of-Fig. 7 is set level.

Comprehensive electrical cnnector of the present invention is used for the power cable of power supply and service cable or distribution box are coupled together, except that except current supply line, also comprise and be used for safe and servo indication, the lead of control device in the cable, and to auxiliary equipment, the lead of power supply such as lighting device.

According to the present invention, connector is made of two links that cooperatively interact, and is referred to as plug and socket below.In these two parts each all has the identical or similar part of some structures.

In general, connector of the present invention is made of two links 1,2, for example socket among Fig. 11 and plug 2.These two parts that match are at the joint of formation stube cable and power distribution cabinet or two cables that combines.

Socket 1 has a columniform metal shell 3, and it is contained on the bearing 4 with fixture 5, and fixture can be as the flange of supporting the plane.Be useful on the hole of passing retaining element 6 above it, retaining element can be a screw, and bolt and nut or other are fixed on part on the bearing 4 with shell 3.

In bearing fixture 5 both sides, the shell of socket 13 constitutes two outstanding hollow pipes, one 7, one backward 8 forward.On the excircle of Tu Chu tubular portion 7 rib-loop 9 is arranged forward, be used for cooperating, with the shell 3 and plug 2 machineries of socket 1 be assembled together (Fig. 3 and Fig. 4) with ribbed sleeve 10.

There is the insulative tubular body 12 of the hollow of a support conducting ring inside of Tu Chu tubular portion 7 forward, is used for supporting that with the shell 13 of socket 2 the hollow insulative tubular body 11 of conducting ring is involutory.

Supporting respectively has the mutually different annular concentric dividing plate of several diameters on the inner

hollow pipe

11 and 12 of contact ring, for example lay respectively at encircle in two on the plug and

socket

14,15 and plug and socket on outer shroud 16,17.The

groove

18,19 of their loopings on plug and socket.These concentric rings constitute a columned hole 20 at the interior place of plug, are used for the connection of accessory circuit, and concentric ring constitutes a sleeve 21 on socket.

Respectively be embedded with an interior conducting ring 22 and an outer conducting ring 23 on the inside and outside wall of the interior toroidal membrane 14 of plug 2, and on the outer ring dividing plate 16 an interior conducting ring 24 only arranged on inwall.

Respectively be embedded with an interior conducting ring 25 and an outer conducting ring 26 on the inside and outside wall of the outer ring dividing plate 17 of socket, and only be embedded with a conducting ring 27 on its interior toroidal membrane 15 at outer wall.

Conducting ring can be embedded in the toroidal membrane, promptly is stuck in separately in the groove of corresponding dividing plate sidewall.Consider the stroke when plug connects, the common front end face of slot pitch toroidal membrane has enough distances.

The quantity of toroidal membrane depends on the number of phases of power supply.For a three phase mains, the toroidal membrane number average in plug 2 and the socket 1 is 2.

To see as us, the conducting ring in the plug 2 separately with power cable 31 medium power leads 28,29,30 in one end connect.For socket also is the same, can only see a power leads 32 in Fig. 3.

Respectively there are three

grooves

33,34,35 at the hollow insulated tube 11 of plug 2 or socket 1 or 12 rear portion, equidistantly distribute on circumference, separate by three

cylinders

36,37,38 between the groove, make the power leads 28 of

power cable

31,29,30 can connect with the binding

post

39,40,41 of corresponding conducting ring.Like this, can be from figure as us, particularly among Fig. 6, that sees is such, and each binding post is made of an

analog bracket

42,43,44, and carriage is to be made of the laterally projecting

end

45,46,47 of conducting ring.Can be with traditional bolt and

nut structure

48,49,50 with power leads 28,29,30 are fixed on binding

post

39,40, on 41.

As can seeing among Fig. 2, the angle that staggers mutually of the conducting

ring

22,23,24 in the plug 2 makes their binding

post

30,40,41 and corresponding power leads 28,29,30 be separated from each other, and provides certain convenience for wiring.

Although do not show the conducting ring 25,26,27 in the socket 1 in the drawings, their situation that is provided with also is identical.

Some conducting rings of the insulated tube 11 of plug 2 surface within it have a groove, and other conducting ring is flat, and its side surface is smooth.As an example, in Fig. 3, only be positioned at conducting ring 23 on the outer surface of toroidal membrane 14 for flat and smooth.Other two conducting

rings

22,24 side surface within it all have annular groove 51,52.Accordingly, the conducting ring 26 of socket 1 has cannelure 53 on the side surface within it.

Some conducting rings of the insulated tube 12 of socket 1 surface within it have an annular groove equally, and other conducting ring is flat, and its side surface is smooth.As an example, in the example of introducing, the conducting ring 26 that only is positioned on the inner surface of outer ring dividing plate 17 has such groove.Corresponding situation in plug 2 is opposite, like this can be by a centre part that in groove, is provided with, make the connection that realizes circuit between plug 2 and the socket 1.Therefore flat conducting ring is always corresponding with the conducting ring that groove is arranged.

Certainly, the cannelure that is positioned at the conducting ring inner surface also can be positioned at the outer surface of relevant conducting ring.

When two Connection Elements that cooperatively interact, plug 2 and socket 1 after inserting mutually, are that the contact part can be the multiple spot contact by being electrically connected between the conducting ring of two correspondences of centre contact part 54 realizations strictly speaking.

The shape of contact part 54 is generally annular in the middle of this, is installed in the cannelure of conducting ring.

Now, we have a look at a true form of the middle contact of this multiple spot contact part 54 by Fig. 7.

According to this example, in the middle of the multipoint mode contact part 54 be one have a plurality of separate, the metal ring of the contact spring 55 that some arches.This part is made of a metal tape that has separated transverse groove 56.The length of groove constitutes one section bonding jumper less than the width of metal tape between two grooves of adjacent branch.It is arc that metal tape slightly is, and when forming strap is ring-type, these bonding jumpers will be given prominence to, and become arc spring, constituted equally distributed electric contact spring 55 on each orientation.They can machinery the smooth surface that is pressed in corresponding conducting ring on.

According to the present invention, it is omnibearing that these characteristics make the electric substantially contact performance of each phase.

Ground wire 57 is around lead outside, and is positioned at the outer subcutaneous of cable 31, and ground wire is connected on the earth terminal on the becket 59 of socket 1 bottom, also is the same to plug 2.Between this ring 59 and the corresponding sidewall of plug 2 or socket 1 is conducting.

Connection between the ground wire of socket 1 and plug 2 realizes that by an assembling sleeve 10 and becket 60 this becket is stuck in the circumferential slot of 7 inner surfaces of excrescence forward on socket 1 shell 3.

Label is all 59 becket and makes the interior insulated tube 12 of socket 1 withstand on the internal shoulder in the socket 1 in addition.

Servo or the safe lead that is called pilot wire 61 is distinguished separate connection on the ring 62 of arranged in succession on the center pin 64 in plug 2 inside, is separated with dead ring 63 between the ring 62.Pin is installed in the centre bore of the hollow insulated tube 11 in the plug 2.The end of this pin 64 constitutes the subconnector of control loop lead.

Center pin 64 cooperates with the center 21 of socket 1 shell 3.Cover 21 side surface is provided with conducting ring and separates their dead ring, and is corresponding with ring 62 and 63 on the pin 64 respectively, is positioned at being electrically connected of side accordingly to set up, and the contact of end simultaneously also can be set up being electrically connected of end.

As shown in Figure 1, power cable 31 is fixing by the spring clip 65 that a plurality of pawls 66 are arranged.

The bottom of plug 2 shells is by 67 sealings of a sealing device, and from profile, sealing device is positioned at pawl 66 1 sides of spring clip 65, is the sealing cushion.This device 67 has a sealing ring 68 that is made of deformable material 69, and it is clipped between two pressurization packing rings, and one is end washer 70, and another is a pressurization packing ring 71.The power that force transmission ring 72 will be contained in the nut 73 on plug 2 shells 3 passes on the pressurization packing ring 71 and promotes it and moves axially.These parts constitute the end seal 67 of sealing ring formula, make the external agency insulation and the sealing of lead and connector.

Fig. 4 is the rib-loop cover 10 of assembling usefulness, and it is connected plug 2 on the shell 3 of socket 1.Rib-loop overlaps on the inner surface of 10 ends rib-loop, and the rib-loop that is used on the preceding outstanding cylinder 7 with socket 1 shell 3 cooperates.Rib-loop cover 10 is fixed by the elastic pressure of a becket 74 in direction of rotation, before becket 74 is placed in the groove of outstanding cylinder 7.In addition, cover 10 has horizontal hole 75, is used for mounting screw pin 76, to guarantee the fixing of whole device.

The spring clip 65 that rear end face withstands on the interior dead ring 11 of latch 2 is entangled by a sleeve 77, and the inwall of sleeve 77 is taper 78, and it can alternately be arranged mutually by several conical surfaces and cylinder and constitute.

The end that the hoop of spring clip 65 is arranged pawl 66 constitutes taper surface.The conical surface 7 of sleeve 77 axially moves forward and makes entad clamping cables 31 of pawl 66.Sleeve 77 with the assembling usefulness adapter sleeve on rib-loop cooperate the exocuticle of tightening pawl 66 clamping cables 31 that make spring clip 65, make cable 31 can not move fully, to avoid that the power that cable is subjected to is passed to binding

post

39,40,41 get on.On the contrary, plug 2 can left-right rotation with respect to another parts of socket 1 or connector.And the rotation of power cable 31, for example rotation that is caused by the machinery that is powered only causes relatively rotating between two parts of connector, and does not influence the machinery or the electrical characteristic of joint.

The end seal 67 of sealing cushion is arranged in the rib-loop cylinder 79 at cover 77 rear portions, and fixing by nut 73.Nut 73 is screwed on the rib-loop of cylinder 79, and the part that will constitute sealing gasket by the inner conical surface 78 (Fig. 3) of the rib-loop tube of sleeve 77 compresses.

The restriction of plug insertion position and the contact position of same circuitry phase are that the shoulder bottom ledge 7 medial surfaces before the shell of plug 2 and the socket 1 guarantees.

Support conducting ring hollow insulated

tube

11 and 12 to vertically move be by they shoulder location in the groove and remaining on this position separately, to guarantee when connector uses insertion and the axial motion of extracting.

Point out that at last sleeve 77 is to be screwed on the outer surface at plug 2 shell rear portions with being connected of plug 2, up to the shoulder 80 that withstands on plug 2 shells.Sleeve 77 is fixed by three jackscrews 76 without a head radially, becomes flexible preventing.The head of jackscrew inserts in the cannelure 81 of plug 2 outer surface of outer cover.

Also need point out, have two alignment pins to be inserted in the hole of plug 2 shells in addition in order to prevent the rotation of lock sleeve 65.

Claims

1. be used for the electrical cnnector that is connected between (31) between the polyphase electric power cable or power cable (31) and the distribution box; It is to be made of two parts that are inserted in simultaneously, and one of them is sun or the cloudy plug (2) that cylindrical protective shell (13) is arranged; It links together with a corresponding plug or a moon or positive socket (1), and connection is realized by assembling rib-loop cover (10); Cable (31) is clamped by a chucking cover (65), and a cone 78 is pressed on the chucking cover (65) it is clamped on the cable (31) under the effect of axial pressing force; It is characterized by: the moon of each correspondence or male parts, positive or cloudy plug (1) and cloudy or positive socket (1) all have the hollow insulated tube (11,12) of a support conducting ring, the coaxial annular dividing plate (14,15,16,17) that different-diameter is arranged on it, in the middle of them is cannelure (18,19), the toroidal membrane (14 of hollow insulation (11,12), 15,16,17) placing conducting ring (22 coaxially on the interior lateral wall, 23,24,25,26,27), they are connected with each lead mutually respectively; Its feature also has: have in two relative conducting rings have one on one the side in the middle of contact part (54), at the moon, two parts (1 of sun, 2) be plugged together when constituting an electrical connector conducting ring (22,24,26) each in respectively with corresponding conducting ring (23,25,27) be in aspectant position, aspectant conducting ring be in contact with one another by contact part (54) in the middle of corresponding; Its feature also is: each conducting ring has side direction ledge (45 on (22,23,24), 46,47), constitute binding post (39,40,41) be connected with corresponding lead with cable (31), in addition, in the cable (31) round each lead (28,29,30) and the ground wire (57) that is positioned under the cable sheath link to each other with the becket (59) of plug (2) and socket (1), and with plug (2) or socket (1) conducting.

2. by the described electrical cnnector of claim 1, it is characterized by: the essential structure of each link (1,2) is identical.

3. by claim 1 or 2 described electrical cnnectors, it is characterized by: conducting ring (22,23,24,25,26,27) is embedded in the madial wall and the groove on the lateral wall of toroidal membrane (14,15,16,17).

4. by any described electrical cnnector in the top claim, it is characterized by: the groove (51,52,53) of annular is arranged on the conducting ring (22,24,26) of contact part (54) in the middle of being equipped with, and middle contact part (54) just is embedded in these grooves.

5. by claim 1 or 4 described electrical cnnectors, it is characterized by: middle contact part is annular, is the multiple spot contact.

6. any described electrical cnnector in requiring by aforesaid right, it is characterized by: be installed in partially conductive ring (22,24,26) the contact part of the annular in the cannelure (51,52,53) (54) is a becket, on its excircle, there is horizontal protrusion tab to constitute electric contact spring (55), these contact springs are outside arc, are transverse slot (56) each other, constitute contact spring (55) between slit (56).

7. any described electrical cnnector in requiring by aforesaid right, it is characterized by: when two corresponding parts (1, when 2) linking together, have cannelure (51,52,53) and have the conducting ring (22 of contact ring (56), 24,26) corresponding one by one with the ringless-type groove conducting ring (23,25,27) that is on the another one parts.

8. by any described electrical cnnector in the claim 4 to 7, it is characterized by: the cannelure (51,52,53) on the conducting ring (22,24,26) is an internal annular groove.

9. by any described electrical cnnector in the claim 4 to 7, it is characterized by: the cannelure (51,52,53) on the conducting ring (22,24,26) is an outer annular groove.

10. any described electrical cnnector in requiring by aforesaid right, it is characterized by: the core of the interior toroidal membrane (14) of plug (2) is provided with a columniform pin (64), the separated independent contact rings of a plurality of annular insulation layers (63) (62) are arranged on it, the cylindricality that has the contact ring of identical set on pin (64) and another link is matched by electric sleeve (21), connects the lead (61) of servo and safety return circuit after pin inserts sleeve.