CN107946857B

CN107946857B - Rotatable sealing connector for sensing signal transmission cable

Info

Publication number: CN107946857B
Application number: CN201711408739.6A
Authority: CN
Inventors: 杨晶; 张大龙; 何韬; 顾文强; 郭良
Original assignee: Dandong Yalujiang Sensitive Co ltd
Current assignee: Dandong Yalujiang Sensitive Co ltd
Priority date: 2017-12-22
Filing date: 2017-12-22
Publication date: 2023-09-15
Anticipated expiration: 2037-12-22
Also published as: CN107946857A

Abstract

The utility model provides a but sensor signal carries rotatable seal connector of cable, its structure constitution include plug casing, connecting bolt, nut and cable seal cover, the cable seal cover be the cable and revolve the core, be equipped with round ring platform on the nut inner wall, the cable side of ring platform correspondingly forms annular spout, the cable revolves on the core, the protrusion is equipped with a locating pin in the core surface, the locating pin falls into annular spout along with the cable revolves the core by the breach that holds the locating pin and pass on the ring platform. According to the technical scheme, the problem that operators can give clear information when the internal condition of the connector cannot be observed is effectively avoided, so that the phenomena of excessive rotation sprain and twisting off of the internal wire core are prevented, the technical purpose that the connector is not required to be disassembled on site is achieved, the plug connection is accurately and rapidly completed, and the operation safety of high-speed rails, petrochemical engineering and airplanes is ensured.

Description

Rotatable sealing connector for sensing signal transmission cable

Technical Field

The present application relates to connectors that are configured to be plugged into a small, closed detection environment to conduct a sensing measurement signal, such as a temperature transmission signal, a speed transmission signal, a pressure transmission signal, etc.

Background

The sensor signal leading-out connector is a connecting product which leads out sensor measurement signals such as temperature transmission signals, speed transmission signals, pressure transmission signals and the like in a plug and socket mode from a small and closed detection environment, and is widely applied to the technical fields of high-speed rails, ship motors, power station motors, petrochemical industry and the like. Taking a high-speed railway wheel axle box as an example, sensing and transmitting signals of a temperature or speed sensor are required to be led out of the wheel axle end gearbox through a conveying cable and a connector of the high-speed railway wheel axle box and transmitted to an external detection control unit so as to implement accurate sensing and control according to the temperature and speed transmitting signals and ensure safe operation of the high-speed railway locomotive. The structure of the existing sensing cable connector is shown in fig. 1, a rubber sealing sleeve 2 is fixed at the end of a sensing cable, the sensing cable comprises the rubber sealing sleeve 2 fixedly pressed into a connecting bolt 3 and is in threaded sealing connection with a nut 1, a plug end of the connecting bolt 3 is in threaded sealing connection with a plug shell 12, and a wire core 5 of the cable is connected to a pin disc fixed on a plug. The existing connector has technical standard sealing requirements when leaving the factory, in the installation, the sensing end 16 of the cable is installed in place, but a certain angle difference exists between a connector plug pin and a junction box of a working machine cavity in most fields, the connector can be plugged with the junction box after rotating, and because the connector and the sensing transmission cable are fixedly assembled, an installer has to disassemble the fixed connection of the connecting bolt 3 and the screw cap 1 and the sealing connection of the connecting bolt 3 and the rubber sealing sleeve 2 in the field, and the plug is plugged with the junction box and then is restored to be connected, so that two technical problems are caused: firstly, the plug is inserted and rotated to drive the wire core to twist relative to the cable, the length allowance of the wire core in the plug shell is small, the torsion state of the inner wire core is difficult to observe, operators are likely to twist for many times during field installation, the accumulation of torsion angles is very easy to strain and even twist off a plurality of wire cores, and the problem of extremely large sensing detection connection safety is caused by field installation operation; secondly, the connector is not disassembled on site, so that the sealing technical performance of the product is damaged, and the potential safety hazards of the sensor in high-speed rail, chemical production and military equipment are greatly increased.

Disclosure of Invention

The invention aims to provide a rotatable sealing connector for a sensing signal transmission cable, which has a rotatable structure to adapt to a plugging angle difference, can limit large-angle rotation, protect an inner wire core from twisting at a large angle and always maintain the technical requirement of product sealing during the rotation. The application provides a but sensing signal carries rotatable sealed connector technical scheme of cable, its main technical content is: the utility model provides a but sensor signal carries rotatable seal connector of cable, its structure constitution includes plug casing, connecting bolt, nut and cable seal cover, connecting bolt's cable end and nut screw thread fixed connection, plug end and plug casing screw thread sealing connection, the cable seal cover be the cable and revolve the core, be fixed in the fixed seal cover of signal transmission cable end, be equipped with round ring platform on the nut inner wall, the cable side of ring platform correspondingly forms annular spout, on the cable revolves the core, the protrusion is equipped with a locating pin in the core surface, the locating pin falls into annular spout along with the cable revolves the core by the breach that holds the locating pin and pass on the ring platform, after the equipment, cable revolves core tang outer terminal surface and connecting bolt inner terminal surface sealing fit, be equipped with one in the annular spout and cooperate the locating pin, spacing fixed pin that acts on the cable revolves the core.

In the technical scheme, the preferable technical means is that the outer end face of the spigot of the cable rotary core is in sealing fit with the inner end face of the connecting bolt through the rotary sealing ring.

The application discloses but sensor signal carries cable rotary seal connector technical scheme, but the cable revolves the core rotatable in the nut, and its rotation angle is limited in the small angle scope because of the setting of fixed pin, and it is limited the angle revolution mechanic and can be suitable for the terminal box grafting angle difference in plug and the work machine chamber, and still effectually avoided the operating personnel to give clear information when can't observe the inside condition of connector to prevent the emergence of the phenomenon of excessive rotation sprain, the inside sinle silk of torsion-breaking. The novel structure of this product makes operating personnel need not to disassemble the connector in the scene, still can be accurate, quick completion plug grafting, guarantees the completion of cable and not harm, maintains original sealing performance when connector product leaves the factory, guarantees that fields such as high-speed railway, petrochemical, aircraft sense detection signal cable reliably connect and safe, accurate transport, has guaranteed the operation safety of high-speed railway, petrochemical, aircraft.

Drawings

Fig. 1 is a sectional view of a conventional connector.

Fig. 2 and 3 are an external view and a sectional view of the present patent application, respectively.

Fig. 4 is a cross-sectional view of the structure of A-A of fig. 3.

Detailed Description

Fig. 3 and 4 show an embodiment of the rotatable sealing connector for a sensor signal transmission cable disclosed in the present application, which structurally comprises a connecting bolt 3, a plug housing 12, a nut 2 and a cable gland. The cable gland is a cable rotary core 1, the cable rotary core 1 is a fixed gland fixed on a signal transmission cable end, the cable rotary core 1 sleeved with a signal transmission cable 15 passes through and falls into a nut 3, and can coaxially rotate relative to the nut 3, and one end of the cable rotary core 1 penetrating out of the nut 3 is a rotation action end; the inner wall of the nut 3 is provided with a circle of ring table 13, the cable side of the ring table 13 correspondingly forms an annular chute 14, a locating pin 9 is arranged on the cable rotary core 1 and protrudes out of the surface of the core body, a notch 10 for accommodating the locating pin 9 to pass through is arranged on the ring table 13, the locating pin 9 of the cable rotary core 1 passes through the notch 10 of the ring table 13 and falls into the nut 3, after the nut 3 is fixedly connected with the cable end thread of the connecting bolt 3, the end face of the spigot end of the cable rotary core 1 is provided with a sealing ring, the sealing connection of the cable rotary core 1 and the port of the connecting bolt 3 is realized, and after a pin disc is arranged at the shell opening of the plug shell 12, a sealing space for connecting the cable core 11 to the pin disc is formed in the connector. The seal ring is preferably a rotary seal ring 5.

The annular chute 14 is provided with a fixing pin 4 for limiting the rotation angle of the cable core 1 relative to the nut, and in the structure of this embodiment, the fixing pin 4 and the notch 10 of the annular table 13 are preferably arranged at a central angle of 180 degrees, namely respectively positioned at two ends of a straight line passing through the center of the circle, so as to limit the maximum rotation angle of the cable core 1 relative to the nut 2 to be smaller than 360 degrees.

Claims

1. The utility model provides a but sensor signal carries cable rotary seal connector, its structure constitution includes plug casing (12), connecting bolt (3), nut (2) and cable seal cover, the cable end and the nut (2) screw thread fixed connection of connecting bolt (3), plug end and plug casing (12) screw thread sealing connection, its characterized in that cable seal cover be cable core (1), be fixed in the fixed seal cover of signal transmission cable line end, be equipped with round platform (13) on the nut (2) inner wall, the cable side of round platform (13) correspondingly forms annular spout (14), on cable core (1), protrusion is equipped with locating pin (9) in the core surface, locating pin (9) fall into annular spout (14) along with holding locating pin (9) on cable core (1) by round platform (13), the outer terminal surface of cable core (1) and connecting bolt (3) port sealing fit, be equipped with a cooperation locating pin (9), spacing fixed pin (4) that acts on cable core (1) in the annular spout (14).

2. The rotatable sealing connector of the sensing signal transmission cable according to claim 1, wherein the outer end face of the spigot of the cable rotary core (1) is in sealing fit with the port of the connecting bolt (3) through a rotary sealing ring (5).

3. The sensor signal carrying cable rotatable sealing connector according to claim 1 or 2, characterized in that the securing pin (4) is arranged at a 180 ° central angle to the indentation (10) of the ring table (13).