Plug connection

 

The invention relates to a plug connection for connecting a cable in underground mining. Flange axially connected with forklift part, which is fixed on the socket part, by a nut, and is sealed against ingress of moisture and/or dirt by using at least one sealing element. Technical result - providing a simple method of installation maximum sealing and securing with a low production cost standard elements for a series of plug connectors that allow both axial supply cable and radial supply cable. For this male threads on the socket part and the corresponding inner thread cap nut made as transahara thread, and/or hole for cable entry from the rear fork end is provided with a crown portion, at least one radial receiving hole for the cable. 9 C.p. f-crystals, 4 Il.

The invention relates to a plug connection for connecting a cable in underground mining, with the halftone part and axially sochlenenii with her, having on the back side of the th on the thread of the socket part, located rotatably on the fork part of the Union nut and sealed from moisture and/or dirt by using at least one sealing element.

Plug connection of this type is used in underground mining, in particular for an electrical cable connections between the individual units of electrohydraulic systems of supports. To protect the electrical contacts in the plug connection from the ingress of dust and, in particular, from moisture in the harsh conditions of work under the ground and to prevent interruptions in the production process has at least one sealing element, which in the assembled condition of forklift parts and socket parts closes inside the contacts from the environment. In related to this type of product document DE 20004566 U1 in grooves in the closed circuit on the guide trunnion fork part and the distance from the back of the stopper flange located with the possibility of free rotation and axially fixed nut installed two made in the form of o-ring sealing element, which in assembled form adjacent to the inner is ofilei details produced by molding under pressure from the rack elastic mass, designed to prevent moisture penetration from the rear of the forklift parts. Cable conductor is fixed in the fork part of the electrical connector, which interacts with a corresponding mating part in the socket part. Using the centering holes in the guide trunnion fork part and the centering pin in the socket part is provided by the interconnection forklift parts with the female part or the articulation of the corresponding electrical connectors in only one orientation. Thus, by means of a plug connection is provided by creating only provided for electrical connection. The transmission cable in the hole for cable entry at the fork part is axially relative to the guide axle forklift parts. For radial supply cable up to the present time using a different design of the electrical connector.

The objective of the invention is constructive design of the socket parts and forklift part, to a simple method of installation they provide maximum sealing against ingress of moisture and dirt, and at low proizvodstvennykh as axial supply cable, and radial supply cable.

This task is solved by the features of the invention, described in paragraph 1 of the claims. According to the invention, the outer thread on the socket part and the corresponding internal thread of the Union nut is executed as multiple threads and/or hole for cable entry from the rear fork end is provided with a crown portion with one, at least, radial receiving hole for the cable. Due to the multiple threads, by means of which the cap nut is fixed and screwed on the flange, the electrical connector can be assembled after one and a quarter to one and a half turns of the nut, resulting in greatly simplifying installation of the electrical connector in underground mining. Description forklift parts as a standard item for a series of plug connectors is provided by the crown portion on the rear side, which together with axial cable entry permits a radial cable input, and a corresponding receiving hole makes it impossible to detach the cable from the fork part or unwanted disconnection molded Pro is of four located offset to each other by 90and/or open with the edge of the receiving hole through which the cable is fed radially to the hole for cable entry from four different directions with simultaneous fixing of the cable in the receiving hole. For this purpose, the receiving apertures can be performed, in particular, as the radial holes on 3/4. Especially preferred if the fork part and the crown part zamonolichennyj and preferably made as a metal rotating part, in particular brass rotating part. Particularly strong connection between the cable and the fork part is achieved when the cable when the radial supply cable is fixed in the receiving hole through the clamping sleeve, preferably the clamping sleeve connected booking or a braided cable sheath or clamped between the clamping sleeve and the receiving hole, so that tensile forces, as well as leakage currents or similar, reliably discharged through the fork part. The receiving apertures in the crown portion also provides another advantage in that they can be installed or they may be imposed screen to improve the electromagnetic shielding forklift parts and/or radially oriented or withoutyou fixation of the cable from acting on the cable tension.

As is known, in the case of underground mining on the fork part is formed filling the hole for the cable entry and the crown portion, and covering the cable and the crown part obtained by injection molding, rack-elastic profile the item. For optimum sealing against the penetration of dirt and moisture forklift part can be on the wall section, adjacent to the hole for cable entry with groove for o ring that provides additional sealing on a boundary surface between the metal fork part and the filling mass filling the hole for the cable entry.

In a preferred form of execution of the plug connection according to the invention, the outer thread on the socket part and the internal thread on the forklift parts are made transformi. Inexpensive and easily mounted device the Union nut on the fork part is achieved preferably through stoparea faceted ring, which on one side engages in the groove on the guide pin of the fork part and the other side into the groove on the closed-circuit coupling nuts. Between the ring tide grooves on the side Vivaldi Union nut free running or protection against kinking, thus forklift part and socket part can be connected with a predetermined Assembly and disassembly effort. Alternatively, it is possible to abandon the gap until due to the manufacturing technology of the undercut, so that in this case, the ring burst creates a detent in the form of emphasis in the assembled state of the socket and forklift parts. This can be an advantage especially when fully assembled between the front side nut and the thrust flange for the Union nut on the socket part set o-ring seal, in particular a sealing ring, which preferably sits in a groove extending between the external thread and the thrust surface of the socket part. Excessive compression of the ring is eliminated by the above measures. O-ring seal, on the one hand, prevents the metal clamping nut from the socket part and, on the other hand, prevents corrosion between these parts, which could impede the connector plug connections. With the free course of the o-ring seal may perceive themselves axial force to rebuild threads and thereby to facilitate removal.

Other advantages of the drawing of examples of execution.

The drawing shows:

Fig.1 - plug the connection socket and forklift part according to the first form of execution with axial inlet cable, type slit;

Fig.2 - plug connection with forklift part according to the second shape with a radial supply cable, type in section;

Fig.3 is a perspective view of the crown parts forklift parts with Fig.2 to molding of the casting;

Fig.4 - forklift part according to Fig.2 with axial inlet cable and screen, type in the context.

In Fig.1 shows a first form of execution of forklift parts 10, which may be combined with the halftone part 1 in the plug connection. The halftone part 1 includes the housing of the socket part 2 of brass, in which the connector 3 are assembled mating connector 11 in forklift parts 10. Circuit 4 of the housing 2 of the socket part is provided at least one circular locking groove 5, which is fully assembled, lies in the same axial position, which is located in a cylindrical guide pin 12 forklift part 10 of the front seal and lock ring 13. The mutual positioning of electrical connectors 3, 11 through the speaker unuturum groove 14 on the upper side of the guide pin 12. At the open end to be slipped on easily guide axle 12 forklift part in the housing 2 of the socket end is provided with external thread 6, made in the form of multiple threads, preferably transactnow. Between the external thread 6 and the reverse, addressed to the fork part 10 of the thrust flange 8 in the corresponding groove 9 is planted o-ring 9A.

It is shown in Fig.1 forklift part 10 is fixed on the halftone part 1 by means of the cap nut 20, which for this purpose is placed on the fork part with the possibility of free rotation on the front end has transactnow internal thread 21. The possibility of rotation and axial fixation of the collar nut 20 on the guide pin 12 forklift part 10 is ensured by the locking ring or stoparea faceted ring 22, which has its inner annular surface sits in a narrow groove 15 in the guide pin 12 forklift part 10, and its outer annular surface engages into the groove 23 on the inner perimeter of the cap nut 20. The ring burst 24 with the inner thread cap nut 20 is separated from the internal threads 21 on the gap 25, which in the example of execution according to Fig.1 assembled (not shown) provides coupling of odara interaction transactnow internal thread 21 on the Union nut 20 and transactnow external thread 6 on the housing 2 of the socket part, forklift part 10 and the halftone part 1 recorded after 1,25-1,5 rotation of the cap nut 20. O-ring seal 9A on the female part 1 is clamped in the assembled condition, i.e., screwed cap nut 20, between the latter and the thrust flange 8, so that provides additional protection from moisture, prevents corrosion between the coupling nut 20 and the housing 2 of the socket part and, in addition, has an axial impact on the cap nut 20, which allows for disassembly to go from the internal thread 21 on multiple threads 6 on the housing 2 of the socket part. In the example of execution according to Fig.1 forklift part 10 also includes a second, rear o-ring seal 16 which, as described in the document DE 20004566 U1, is located between the housing 2 of the socket part and the guide pin 12 and provides a seal against the penetration of moisture and dirt.

The cable 30 is fed axially relative to the guide pin 12 on the rear side 17 of forklift parts 10 in the hole for cable entry 18 forklift parts 10. Wires 31 of the cable 30 are fixed to the electric connector 11 forklift parts 10. On the rear fork 17 part 10 is made zamonolichennyj crown portion 40 includes four offset from each other by 90open with the edge of the radial receiving holes 41A, 41C, 41P, the first opening in the crown portion 40, however, he is not associated with the crown part 40 no tension or torque. Hole for cable entry 18, conductor 31, the cable 30 and the crown portion 40 are sealed in a molded core part 50 of the rack elastic casting masses, which at the end of the cable 30 is molded in the form for casting under pressure (not shown) on forklift parts 2 and has a flexible neck 51. Because the fill is provided to lock the cable 30 to the rotation and axial locking and receiving apertures also provide for respectively fixing the core details 50 flush on the metal fork part 10. As additional barriers to the penetration of moisture between the fork part 10 made of brass and molded part 50 in the inner wall of the bore 18 for cable entry includes a groove 19, which can fit the o-ring seal 19A or at the discretion of something like that.

In Fig.2 shows the lift portion 110 according to the second exemplary embodiment, which may be combined with the previously described socket part 1 and secured by means of nut 120 and the internal threads 121 on multiple external thread 6. Here also is the axial lock and install cap nut 120 is the arrival in the groove 115 in the guide pin 112 and the groove 123 on the inner perimeter of the cap nut 120. Between multiple internal thread 121 and addressed to her ring tide 124 is only a small recess, so that with screwed cap nut 120 on transactnow outer thread 6 of the housing 2 rosette parts of the ring burst 124 creates a persistent fixation on the female part 1. O-ring seal 9A on the female part 1 in assembled form is clamped between the locking nut 120 and the thrust flange 8, so that it provides extra protection from moisture and prevents corrosion between the coupling nut 120 and the housing 2 of the socket part. On the guide pin 112 is provided by a single groove o-ring seal 113, which in the assembled condition, comes in the locking groove 5 and locks the fork portion 110 axially in the housing 2 of the socket part. Between the back side 127 of the Union nut 120 and the thrust flange 128 on forklift parts 110, another o-ring seal 126 which prevents the ingress of any moisture and dirt in the intermediate space between the coupling nut 120 and forklift part 110. Of course, forklift parts guide 110 the journal is also possible to provide two annular seals and/or you can use the cap nut according to Fig.1.

As provalnymi, open with the edge of the receiving hole A, B and C made as holes on 3/4, and in the receiving hole S announced here on the side of the cable 130 is laid together with the clamping sleeve 134. Thus, the cable 130, despite the supply side at an angle, is fixed on the fork part 110 and is blocked from exposure to tensile and bending forces. After joining end 131 of the cable to the plug connector 111 is formed by injection molding part 150 of the rack elastic filler mass, which completely fills or covers the cable 130, the clamping sleeve 134, the crown portion 140 and the hole 118 for cable entry, so that even under severe conditions of underground mining in the plug connection can not get the back fork part 110 no moisture or dirt. Reinforcing or shield of the cable 130 may be clamped between the clamping sleeve 134 and the outer side of the cable 130, which provides good electromagnetic shielding removes leakage current forklift part 110 and allows us to perceive on the fork part of the tensile load being imposed on cable.

The performance crown portion 140 from the rear fork portion 120 is particularly clearly seen from Fig.3, the cat V, S also presents the fourth receiving hole 141D. Since receiving apertures 141 A-D are executed as holes on 3/4, then they fix the collet 134 and with it also the cable 130 forklift part 110. Pulled over the cable sheath 130 clamping sleeve 134 may be promoted only on the side of the receiving hole S, and fixed it. Coronaca part 140, which is done receiving apertures 141 A-D, forms a ring or gilbourne the continuation of the housing forklift parts. Outside on the Union nut 120 is provided knurling 129.

In Fig.4 shows a third exemplary embodiment, in which the fork portion 210 has a construction identical forklift part 110. The differences in the way the supply cable 230, the execution of the relevant parts 250 and sleeves A and IS inserted into the receiving apertures A, S crown portion 240 and a radially projecting inward. Reinforcing sheath 235 cable 230 and conductor 231 cable 230 are fed through the gap between the sleeves A, S, so that after forming the molding part 250 cable 230 well-fixed relative to the tensile load. All can be provided by four cartridges, i.e. one core on each receiving hole; be available receiving apertures when the sealing can be provided with an additional locking against rotation for profile details 250. Set screen provides electromagnetic shielding. In the example of execution according to Fig.4 casting mass completely fills the hole 218 for cable entry.

Not represented within the protection scope of the dependent claims, the form of execution in which the cable, preferably together with the clamping sleeve is fixed at several receiving holes 141 A-D. For professionals it is clear that the forklift part in accordance with the subject invention together with crown lengthening is suitable for both axial and radial inlet or outlet cable and that, thanks to transactnow thread, mounting plug connection is fast, even with one hand.

Claims

1. Plug connection for connecting a cable in underground mining with a female part (1) and axially connected with it, with the back hole for cable entry forklift part, which is fixed on the socket part (1) via screwed on an external thread (6) on the socket part (1) and located rotatably on the fork part of the cap nut (20; 120), and is sealed against ingress of moisture and/or dirt by using at least odna inner thread (21; 121) cap nut (20; 120) is executed as multiple threads, and/or the opening (18; 118; 218) for cable entry from the rear side (17; 117; 217) fork end is provided with a crown portion (40; 140; 240), at least one radial receiving hole (41; 141; 241;) for the cable (30; 130; 230).

2. Plug connection on p. 1, wherein the crown portion (40; 140; 240) has several, in particular four, arranged offset relative to each other on 90and/or open with the edge of the receiving hole (41 a-D, 141 a-D; 241 a-D).

3. Plug connection under item 1 or 2, characterized in that the core part (40; 140; 240) and forklift part (10; 110; 210) zamonolichennyj and preferably made as a metal rotating part, in particular brass rotating part.

4. Plug connection according to one of paragraphs.1-3, characterized in that when the radial supply cable cable (130) is fixed in one of the receiving holes (141 a-D) using the clamping sleeve (134), and reinforcing or braided cable sheath (130) connected to the clamping sleeve (134).

5. Plug connection according to one of paragraphs.1-4, characterized in that the receiving apertures of the crown part fits or is established between EE in the receiving hole of the sleeve (A, S) provide additional mechanical fixing of the cable in the axial supply cable.

6. Plug connection according to one of paragraphs.1-5, characterized in that the fork part is formed by injection molding rack elastic core part (50; 150; 250), the closing or filling of the cable, the hole for the cable entry and the crown part, and the fork part (10; 110) on the section of wall bordering hole for cable entry (18; 118) has a groove (19) with o-ring (19A).

7. Plug connection according to one of paragraphs.1-6, characterized in that the external thread (6) on the socket part (1) and inner thread (12; 121) on the fork part (10; 110) is made transformi.

8. Plug connection according to one of paragraphs.1-7, characterized in that the cap nut (20; 120) on the inner perimeter has a circular groove (23; 123) under shut-faceted ring (22; 122) or similar, providing installation on forklift part (10; 110) with the possibility of rotation.

9. Plug connection according to one of paragraphs.1-8, characterized in that between the ring tide (24; 124) of the groove (23; 123) of the internal thread and the internal thread (21; 121) there is quite a big gap (25), providing the Union nut (20) the free passage or protection from the most to ensure the front side nut (20; 120) and the thrust flange (8) for Union nut (20; 120) on the socket part (1) set o-ring seal (9A), in particular a sealing ring, which preferably sits in a groove (9), passing between the external thread (6) and thrust flange (8).

 

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