CN210535887U

CN210535887U - Mining explosion-proof cable connector

Info

Publication number: CN210535887U
Application number: CN201921650752.7U
Authority: CN
Inventors: 张海平; 崔志强; 陈硕之; 丁乐朋; 杜泽华; 王伟
Original assignee: DIANGUANG EXPLOSION-PROOF TECHNOLOGY CO LTD; Zhejiang Xutong Intelligent Technology Co ltd
Current assignee: DIANGUANG EXPLOSION-PROOF TECHNOLOGY CO LTD; Zhejiang Xutong Intelligent Technology Co ltd
Priority date: 2019-09-29
Filing date: 2019-09-29
Publication date: 2020-05-15
Anticipated expiration: 2029-09-29

Abstract

The utility model discloses a mining flame-proof type cable connector, its technical scheme main points include plug subassembly and socket subassembly, plug subassembly is including inserting the concave needle soon, socket subassembly is including inserting the protruding needle soon, insert the concave needle soon and insert the spread groove that the protruding needle tail end all was provided with and supplies the wire card to go into soon, the spread groove lateral wall runs through and is provided with the screw hole, threaded hole female fit has holding screw, the spread groove is inserted protruding needle soon or insert concave needle eccentric settings soon with corresponding, the screw hole is seted up in the thickest department of spread groove lateral wall. The connecting groove is eccentrically arranged, so that the diameter size of the fast-inserting convex needle and the fast-inserting concave needle is reduced when the depth of the threaded hole is ensured to ensure the fixing effect of the set screw on the lead, and the requirement of production is met.

Description

Mining explosion-proof cable connector

Technical Field

The utility model relates to a connector, in particular to mining flame-proof type cable connector.

Background

The connector is also called a connector and is used for connecting two active devices and transmitting current or signals. The connector forms and structures are also various according to applications and application environments. The mining explosion-proof cable connector is mainly used in coal mine underground and in the environment with explosive gas mixture of coal dust, methane and the like around, is used as a connecting device between a power cable and explosion-proof electrical switch equipment, and can also be used as an information communication cable connector in the coal mine underground.

Chinese patent publication No. CN110165472A discloses a mining flameproof cable connector, which includes a plug assembly and a socket assembly, where the socket assembly includes a socket base, a socket insulator disposed inside the socket base, a quick-insertion male pin disposed inside the socket insulator, a connecting rod fixed in the middle of the inner side of the socket insulator, a socket plug ring clamped between the socket insulator and the inside of the socket base, and a fastening screw inserted through the middle of one end of the socket base, which is far away from the plug assembly, and in threaded connection with the connecting rod.

The quick-insertion convex pin and the quick-insertion concave pin in the cable connector are in insertion fit and connected with the conducting wire, so that the communication of a circuit is realized. The structure of the connecting wire of the quick-inserting convex needle and the quick-inserting concave needle is as follows: the tail end of the connecting groove is provided with a connecting groove for the lead to be clamped in, the side wall of the connecting groove is communicated with a threaded hole for the fastening screw to be screwed in, and the fastening screw is screwed in the connecting groove to fix the lead. Because the connecting groove is coaxial with the fast-inserting convex needle or the fast-inserting concave needle, the diameter of the fast-inserting convex needle or the fast-inserting concave needle is difficult to reduce, otherwise, the connection of the set screw is loosened due to the fact that the thickness of the side wall is too small, and improvement is needed.

SUMMERY OF THE UTILITY MODEL

To the technical defect, the utility model aims at providing a mining flame-proof type cable connector, insert the convex needle soon and insert the diameter size of concave needle soon and can reduce to guarantee the fixed effect of holding screw to the wire.

In order to achieve the above purpose, the utility model provides a following technical scheme:

the utility model provides a mining flame-proof type cable connector, includes plug subassembly and socket subassembly, plug subassembly is including inserting the concave needle soon, socket subassembly is including inserting the convex needle soon, insert the concave needle soon and insert the convex needle tail end soon and all be provided with the spread groove that supplies the wire card to go into, the spread groove lateral wall runs through and is provided with the screw hole, screw hole female screw-thread fit has holding screw, the spread groove with insert the convex needle soon or insert concave needle eccentric settings soon that correspond, the screw hole is seted up in spread groove lateral wall thickest department.

Through adopting above-mentioned technical scheme, the fixed effect of the degree of depth in order to guarantee holding screw to the wire of spread groove eccentric settings is being guaranteed to the spread groove, makes the diameter size who inserts the protruding needle soon and insert the concave needle soon reduce, satisfies the production needs.

The utility model discloses further set up to: the plug assembly further comprises a middle pressure head inserted into the socket assembly, a concave needle seat arranged inside the middle pressure head and used for installing a quick-insertion concave needle, a plug needle cover tightly attached to one end of the concave needle seat departing from the socket assembly and used for limiting the quick-insertion concave needle, a double-screw joint connected with the middle pressure head in a threaded mode and used for pressing the plug needle cover, a plug gland connected to the double-screw joint in a far-away mode and arranged at one end of the middle pressure head, and a sealing ring and a pressing ring arranged between the plug gland and the inner side of the double-screw joint.

Through adopting above-mentioned technical scheme, during the assembly, earlier toward the inside concave needle seat of installing the concave needle of inserting soon of putting into of middle pressure head, put into plug needle lid again, screw up double screw joint, put into sealing washer and clamping ring toward double screw joint tail end after that, it can to screw up the plug gland at last, it is convenient fast to assemble.

The utility model discloses further set up to: and a grounding sheet is clamped between the plug pin cover and the double-screw joint.

Through adopting above-mentioned technical scheme, grounding lug and two screwed joint contact, two screwed joint and middle pressure head threaded connection, after the grounding lug connected the earth connection, the electric charge of plug subassembly shell can be derived to the ground, and then reduces the risk that people electrocute, improves the security.

The utility model discloses further set up to: the grounding piece comprises an annular piece positioned between the plug pin cover and the double-screw joint, a fixing piece connected to the inner side of the annular piece and bent into an L shape, and a wire connecting ring connected to the end part of the fixing piece; the hole that the plug needle lid supplied the wire to pass is the through wires hole, one side that the plug needle lid deviates from the concave needle seat is connected with the holding ring in the through wires hole department, the stationary blade card is between two adjacent holding rings wherein.

By adopting the technical scheme, on one hand, the contact area of the needle cover and the lead is increased by the wiring ring, so that the fixing effect of the lead is improved; on the other hand, the fixing of the grounding piece is realized, and the trouble of abrasion caused by the rotation of the grounding piece is prevented.

The utility model discloses further set up to: the middle pressure head is connected with a limiting screw abutting against a double-screw joint towards the outer wall of one end of the plug gland in a threaded manner, and the double-screw joint is provided with a limiting groove for clamping the limiting screw.

Through adopting above-mentioned technical scheme, improve the tight nature of being connected between pressure head and the double screw joint in the middle of, prevent the unexpected trouble that becomes flexible of double screw joint.

The utility model discloses further set up to: the socket assembly further comprises a base for inserting the middle pressure head, a convex needle seat arranged in the base and used for installing the fast-inserting convex needle, a socket needle cover tightly attached to one end of the convex needle seat, which is away from the plug assembly, and used for limiting the fast-inserting convex needle, and a base gland connected with the base in a threaded manner and used for compressing the socket needle cover.

Through adopting above-mentioned technical scheme, during the assembly, will install the protruding needle seat of inserting protruding needle soon and put into the base earlier, put into socket needle lid again, screw up the base gland can, it is convenient fast to assemble.

The utility model discloses further set up to: the socket connecting part and the plug connecting part are connected through a connecting bolt; the base outer connection has the fixed part that is used for with the base mounting fixed, the fixed part is provided with the fixed orifices that supplies the bolt to pass, the fixed orifices all misplaces with connecting bolt.

Through adopting above-mentioned technical scheme, when installing the pedestal on the organism, the wrong commentaries on classics of bolt can not receive socket connecting portion, plug connecting portion's influence, and the installation of being convenient for goes on.

The utility model discloses further set up to: the middle pressure head is fixedly provided with a guide post extending into the middle pressure head towards the side wall of the end part of the socket assembly in a penetrating manner, and the outer wall of the convex needle seat is provided with a guide groove for the guide post to be clamped in.

By adopting the technical scheme, the plug assembly and the socket assembly can be aligned accurately.

The utility model discloses further set up to: the convex needle seat is the type of calligraphy of protruding, the base inner wall is connected with the spacing ring that is used for spacing convex needle seat, convex needle seat outer wall is connected with the stopper, the spacing ring is provided with the spacing breach that supplies the stopper card to go into.

By adopting the technical scheme, the convex needle seat can be conveniently and accurately installed.

To sum up, the utility model discloses following beneficial effect has:

1. due to the eccentric arrangement of the connecting groove, the diameter sizes of the fast-inserting convex needle and the fast-inserting concave needle can be reduced, and the fixing effect of the set screw on the lead is ensured;

2. the connecting bolt and the fixing hole are staggered, so that the socket assembly is convenient to mount;

3. through the arrangement of the guide posts, the socket assembly and the plug assembly can be aligned quickly.

Drawings

FIG. 1 is a schematic structural view of an embodiment;

FIG. 2 is a schematic left side view of the embodiment;

FIG. 3 is a schematic cross-sectional view taken along line A-A of FIG. 2;

FIG. 4 is a schematic structural diagram of a fast-insertion male pin in the embodiment;

FIG. 5 is an exploded view of the plug assembly of the embodiment;

FIG. 6 is a schematic structural diagram of a grounding plate and a plug pin cover in the embodiment;

FIG. 7 is an exploded view of the receptacle assembly of the embodiment;

FIG. 8 is an exploded schematic view of an embodiment;

FIG. 9 is a schematic structural view of a base in the example.

Description of reference numerals: 1. a plug assembly; 11. an intermediate ram; 111. a plug connecting portion; 112. a guide post; 12. a concave needle seat; 13. quickly inserting the concave needle; 14. a plug pin cover; 141. threading holes; 142. a positioning ring; 15. a ground plate; 151. an annular sheet; 152. a fixing sheet; 153. a wire connecting ring; 16. a double-screw joint; 161. a limiting groove; 17. a seal ring; 18. pressing a ring; 19. a plug gland; 2. a receptacle assembly; 21. a base; 211. a socket connecting portion; 212. a fixed part; 213. a limiting ring; 2131. a limiting notch; 22. a convex needle seat; 221. a guide groove; 222. a limiting block; 23. quickly inserting the convex needle; 24. a socket pin cover; 25. a base gland; 3. connecting grooves; 4. a threaded hole; 5. tightening the screw; 6. a limit screw; 7. a connecting bolt; 8. and (7) fixing holes.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

A mining explosion-proof cable connector is shown in figure 1 and comprises a plug assembly 1 and a socket assembly 2, wherein the plug assembly 1 is connected with the socket assembly 2 through a connecting bolt 7.

As shown in fig. 2 and 3, the plug assembly 1 includes an intermediate pressure head 11 inserted into the socket assembly 2, a female pin seat 12 clamped inside the intermediate pressure head 11, four quick-insertion female pins 13 arranged in the female pin seat 12 in a penetrating manner at equal intervals in the circumferential direction, a plug pin cover 14 tightly attached to one end of the female pin seat 12 departing from the socket assembly 2 and used for limiting the quick-insertion female pins 13, a grounding plate 15 tightly attached to one side of the plug pin cover 14 departing from the socket assembly 2, a double-screw joint 16 in threaded connection with the intermediate pressure head 11 and pressing the grounding plate 15, a plug gland 19 in threaded connection with the double-screw joint 16 and far away from one end of the intermediate pressure head 11, and a seal ring 17 and a pressure ring 18 clamped between the plug gland 19 and the inner side of the double-screw.

The female needle seat 12 is in a convex cylindrical shape, and the shape of the inner cavity of the middle pressure head 11 is matched with that of the female needle seat 12, so that the female needle seat 12 can be put in from the middle pressure head 11 to one end of the plug gland 19 and cannot penetrate through. The double screw joint 16 has external threads at both ends thereof and is screw-coupled to the inside of the intermediate ram 11 and the plug gland 19, respectively. The inner side of the middle part of the double-screw joint 16 is provided with a convex edge which is matched with the gland to clamp a sealing ring 17 and a pressing ring 18. The clamping ring 18 is located on the side of the sealing ring 17 facing away from the connector needle cover 14.

As shown in fig. 2 and 3, the socket assembly 2 includes a base 21 for inserting the middle pressing head 11, a convex needle seat 22 clamped inside the base 21, four fast-inserting convex needles 23 which are circumferentially distributed at equal intervals and penetrate through the convex needle seat 22 and are in plug-in fit with the fast-inserting concave needles 13, a socket needle cover 24 which is tightly attached to one end of the convex needle seat 22 departing from the plug assembly 1 and is used for limiting the fast-inserting convex needles 23, and a base 21 pressing cover which is in threaded connection with the inner side of one end of the base 21 far away from the plug assembly 1 and is used for pressing the socket needle cover 24.

The convex needle seat 22 is in a convex cylindrical shape, and the inner side of the base 21 is provided with a convex edge for limiting the convex needle seat 22, so that the convex needle seat 22 can be put into the end of the base 21 far away from the plug assembly 1 and cannot penetrate through the end, and the convex needle seat 22 is inserted into the middle pressure head 11.

As shown in fig. 1 and 2, the base 21 and the middle ram 11 are fixedly connected to the outside of the opposite ends thereof with socket connection portions 211 and plug connection portions 111, respectively. The plug connecting portion 111 includes two ear plates which are symmetrical with respect to the center of the middle pressure head 11, a through hole for the rod portion of the connecting bolt 7 to pass through, and a side plate which is fixedly connected to one side of the ear plate departing from the socket connecting portion 211 and surrounds the side surface of the head portion of the connecting bolt 7. The socket connecting portion 211 includes two engaging lugs which are symmetrical with respect to the center of the base 21 and are threadedly coupled to the coupling bolts 7. After the header module 1 and the receptacle module 2 are inserted, the connection bolt 7 is inserted through the header connecting portion 111 and screwed into the receptacle connecting portion 211.

A fixing portion 212 for fixing the base 21 is fixedly connected to the outside of the base 21, and the fixing portion 212 has the same structure as the plug connecting portion 111. The fixing portion 212 is provided with a fixing hole 8 for the bolt to pass through, and the fixing hole 8 and the connecting bolt 7 are staggered. When the base 21 is mounted on the body, the screwing of the bolt is not affected by the socket connection portion 211 and the plug connection portion 111, and the mounting is facilitated.

As shown in fig. 3 and 4, the end of the quick-insertion female pin 13 opposite to the quick-insertion male pin 23 is connected with a wire, and after the plug assembly 1 and the socket assembly 2 are plugged, the quick-insertion female pin 13 is plugged with the quick-insertion male pin 23 to complete the circuit. The tail ends of the fast-insertion concave needle 13 and the fast-insertion convex needle 23 are provided with connecting grooves 3 for the lead to be clamped in, the side walls of the connecting grooves 3 are provided with threaded holes 4 in a penetrating mode, and the threaded holes 4 are matched with fastening screws 5 used for fixing the lead in a threaded mode. The set screw 5 is a socket head cap screw. The connecting groove 3 and the corresponding fast-inserting convex needle 23 or the fast-inserting concave needle 13 are eccentrically arranged, and the threaded hole 4 is formed in the thickest part of the side wall of the connecting groove 3. When the depth of the threaded hole 4 is ensured so as to ensure the fixing effect of the set screw 5 on the lead, the diameter sizes of the fast inserting convex needle 23 and the fast inserting concave needle 13 are reduced, and the requirement of production is met.

As shown in fig. 5 and 6, the grounding plate 15 includes an annular plate 151 clamped between the header pin cover 14 and the double screw 16, a fixing plate 152 integrally connected to the inside of the annular plate 151 and bent into an L-shape, and a wire loop 153 fixedly connected to an end of the fixing plate 152. The hole of the plug needle cover 14 for the wire to pass through is a threading hole 141, and the four threading holes 141 are distributed along the circumferential direction of the plug needle cover 14 at equal intervals and are opposite to the connecting groove 3. A positioning ring 142 is coaxially and fixedly connected to one side of the plug needle cover 14, which is away from the female needle seat 12, at the threading hole 141, and the inner diameter of the positioning ring 142 is equal to the inner diameter of the threading hole 141. The fixing piece 152 is clamped between two adjacent positioning rings 142, so that the grounding piece 15 is limited by the positioning rings 142 and fixed relative to the header pin cover 14.

The grounding plate 15 is made of H62 brass, and the double screw joint 16 and the intermediate ram 11 are both made of ZG0Cr18Ni9 material. Grounding piece 15 and double screw joint 16 contact, double screw joint 16 and middle pressure head 11 threaded connection, after grounding piece 15 connects the earth connection, the electric charge of 1 shell of plug subassembly can be derived to the ground, and then reduces the risk that people electrocute, improves the security.

As shown in fig. 5, a limit screw 6 for abutting against the double-screw joint 16 is connected to an outer wall of one end of the intermediate pressure head 11 facing the plug pressure cover 19 in a threaded manner, and the limit screw 6 is an inner hexagonal screw. The double-screw joint 16 is provided with a ring-shaped limiting groove 161 for the limiting screw 6 to be clamped in, and the limiting groove 161 extends to the external thread position of one end of the double-screw joint 16 facing the middle pressure head 11. After the limiting screw 6 is screwed to the inner bottom of the abutting limiting groove 161, the double-screw joint 16 is compressed and fixed and is difficult to rotate relative to the middle pressure head 11, so that the connection tightness between the middle pressure head 11 and the double-screw joint 16 is improved, and the trouble of accidental looseness of the double-screw joint 16 is avoided.

As shown in fig. 7 and 8, the end side wall of the intermediate pressure head 11 facing the socket assembly 2 is provided with a guide post 112 extending into the end side wall, and the guide post 112 is welded and fixed with the intermediate pressure head 11. The outer wall of the smaller diameter end of the male pin base 22 is provided with a guide groove 221 for the guide post 112 to be clamped into, so as to facilitate the accurate alignment of the plug assembly 1 and the socket assembly 2.

As shown in fig. 7 and 9, the protruding edge of the inner wall of the base 21 for limiting the protruding needle seat 22 is a limiting ring 213, the outer wall of the end of the protruding needle seat 22 with smaller diameter is fixedly connected with a limiting block 222, and the limiting block 222 and the guide groove 221 are located on the same side. The limiting ring 213 is provided with a limiting notch 2131 for the limiting block 222 to be clamped in, so that the mounting of the boss seat 22 is fast and accurately facilitated.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.

Claims

1. The utility model provides a mining flame-proof type cable connector, includes plug subassembly (1) and socket subassembly (2), plug subassembly (1) is including inserting concave needle (13) soon, socket subassembly (2) are including inserting protruding needle (23) soon, insert concave needle (13) soon and insert protruding needle (23) tail end soon and all be provided with spread groove (3) that supply the wire card to go into, spread groove (3) lateral wall runs through and is provided with screw hole (4), screw hole (4) female screw-thread fit has holding screw (5), its characterized in that: the connecting groove (3) and the corresponding fast-inserting convex needle (23) or fast-inserting concave needle (13) are eccentrically arranged, and the threaded hole (4) is formed in the thickest part of the side wall of the connecting groove (3).

2. The mining flameproof cable connector according to claim 1, characterized in that: plug subassembly (1) is still including middle pressure head (11) that inserts socket subassembly (2), set up in middle pressure head (11) inside and be used for installing concave needle seat (12) of inserting concave needle (13) soon, hug closely in concave needle seat (12) one end that deviates from socket subassembly (2) and be used for spacing plug needle lid (14) of inserting concave needle (13) soon, with middle pressure head (11) threaded connection and compress tightly double screw joint (16) of plug needle lid (14), threaded connection keeps away from plug gland (19) of middle pressure head (11) one end in double screw joint (16), set up sealing washer (17) and clamping ring (18) between plug gland (19) and double screw joint (16) are inboard.

3. The mining flameproof cable connector according to claim 2, characterized in that: and a grounding sheet (15) is clamped between the plug pin cover (14) and the double-screw joint (16).

4. The mining flameproof cable connector according to claim 3, characterized in that: the grounding piece (15) comprises an annular piece (151) positioned between the plug pin cover (14) and the double-screw joint (16), a fixing piece (152) which is connected to the inner side of the annular piece (151) and bent into an L shape, and a wire connecting ring (153) connected to the end part of the fixing piece (152); the hole that plug needle lid (14) supplied the wire to pass is through wires hole (141), one side that plug needle lid (14) deviates from concave needle seat (12) is connected with holding ring (142) in through wires hole (141) department, stationary blade (152) card is between two adjacent holding ring (142) wherein.

5. The mining flameproof cable connector according to claim 2, characterized in that: middle pressure head (11) have stop screw (6) to two screwed joint (16) of support towards the one end outer wall threaded connection of plug gland (19), two screwed joint (16) are provided with spacing groove (161) that supply stop screw (6) card to go into.

6. The mining flameproof cable connector according to claim 2, characterized in that: socket subassembly (2) still including in the middle of supplying pressure head (11) male base (21), set up in base (21) inside and be used for installing protruding needle seat (22) of inserting protruding needle (23) soon, hug closely in protruding needle seat (22) deviate from the one end of plug subassembly (1) and be used for spacing socket needle lid (24) of inserting protruding needle (23) soon, with base (21) threaded connection in and be used for compressing tightly base (21) gland of socket needle lid (24).

7. The mining flameproof cable connector according to claim 6, characterized in that: the socket connecting part (211) and the plug connecting part (111) are respectively connected to the outer parts of the opposite ends of the base (21) and the middle pressure head (11), and the socket connecting part (211) and the plug connecting part (111) are connected through a connecting bolt (7); the base (21) external connection has fixed part (212) that is used for base (21) installation fixed, fixed part (212) are provided with fixed orifices (8) that supply the bolt to pass, fixed orifices (8) all misplace with connecting bolt (7).

8. The mining flameproof cable connector according to claim 6, characterized in that: middle pressure head (11) are fixed to be equipped with guide post (112) that stretch into it towards the tip lateral wall of socket subassembly (2), protruding needle file (22) outer wall is provided with guide way (221) that supply guide post (112) card to go into.

9. The mining flameproof cable connector of claim 8, characterized in that: the utility model discloses a spacing boss seat, including base (21), boss seat (22), base (21) inner wall connection have be used for spacing boss seat (22) spacing ring (213), boss seat (22) outer wall connection has stopper (222), spacing ring (213) are provided with the spacing breach (2131) that supply stopper (222) card to go into.