CN118841787A - Cable quick connector assembly and motor using same - Google Patents

Abstract

The present invention relates to a cable quick connector assembly, including a male connector and a female connector, and the assembly as a whole is an inverted "L"-shaped structure; the male connector includes a male connector housing, a locking copper column, a winding core terminal, a locking sheath, an insulating sheath, a bottom plate, an insulating layer and a fastening bolt; the female connector includes a female connector housing, an insulating layer, a locking bolt, a nut, an insulating sheath, a fastening sheath, a cable terminal, a fastening connector, a sheath connector, a locking nut retaining ring, a locking nut and a fastening bolt. The present invention has a simple design, reliable and stable connection, reduces the contact resistance between conductors, improves the efficiency of electrical connection, reduces energy conduction loss, increases the speed of cable connection and disassembly, and improves work efficiency.

Description

A cable quick connector assembly and a motor using the same

Technical Field

The invention mainly relates to a high-power motor cable quick connector assembly in an LNG cryogenic reliquefaction device, which is a structure and method for simplifying a high-power motor connection device.

Background Art

Motors are an indispensable and important part of modern industry and have a wide range of application scenarios. With the acceleration of industrialization and the expansion of production scale, the demand for power equipment is increasing. Motors need to provide strong power output and stable operating characteristics to meet the demand for power in industrial production. At the same time, with the improvement of energy-saving and environmental protection awareness and the continuous improvement of technical level, the design and manufacturing technology of high-power motors are also constantly innovating to improve energy efficiency and reduce the impact on the environment.

The LNG boil-off gas reliquefaction device uses the cold energy generated by the compression and expansion of nitrogen and helium to deep-freeze the LNG and spray it back into the cabin to achieve the re-balanced liquefaction of BOG. The compression and expansion integrated motor, as the core driving force of the entire set of equipment, needs to provide sufficient power for the equipment. Due to various needs, the motor equipment needs to be frequently moved and disassembled, and the power cable provides the required power supply for the motor, which needs to be frequently disassembled. Since the power cable of the integrated motor needs to carry high current, the cable conductor has a large diameter, resulting in poor flexibility and inconvenience in bending. This defect brings many inconveniences to the installation process, causing many troubles for the operators, thereby reducing work efficiency. Frequent disassembly increases the burden on workers. Therefore, it is urgent to solve these problems to improve work efficiency and ensure the safety and smoothness of the equipment disassembly and movement process.

The prior art has studied the structure and method of the motor connection device, such as CN220754326U; Applicant: Hainan Youdi Electric Power Engineering Co., Ltd. Hainan Youdi Electric Power Engineering Co., Ltd. proposed a cable quick connector assembly, in which a support rod is installed at the connection position of the male connector and the female connector, a bracket is fixed on the support rod, a locking rod is provided on the sliding track of the bracket, and an elastic mechanism is provided between the locking rod and the bracket, and the elastic mechanism can push the locking rod into the locking groove to fix the male connector and the female connector. The advantage of this method is that it is fast and simple, and can be used for outdoor temporary emergency connection operations, but the secondary disassembly and assembly of the equipment is more troublesome. CN217882808U; Applicant: Guiyang Zhongan Technology Group Co., Ltd. Guiyang Zhongan Technology Group Co., Ltd. proposed a cable quick connector, which includes a first wire end clamp and a second wire end clamp, which are connected by external screws and are equipped with a metal head ring and a protective hose. The welding ring and the movable ring in the metal head ring are fixed by clamping springs, and the protective hose can disperse the force, protect the joint position, and prevent the wire end from falling off. This connection method is suitable for cables with small outer diameters, but does not take into account that equipment vibration may cause the connection to loosen.

The above patents are troublesome to disassemble and assemble, and are easy to loosen. Therefore, those skilled in the art are committed to studying a motor connection device with a simple structural design, reliable and stable connection, reduced contact resistance between conductors, improved efficiency of electrical connection, reduced energy conduction loss, and increased speed of cable connection and disassembly, thereby improving work efficiency.

Summary of the invention

The purpose of the present invention is to overcome the deficiencies existing in the motor connection device in the prior art, and to provide a new type of motor connection device and method. This device is aimed at the scene where the power cable needs to be frequently disassembled and assembled, and can improve work efficiency, save space, reduce costs, and ensure the stability and safety of the connection. Compared with the traditional power cable wiring method, the design of the quick connector makes the connection and disassembly of the cable easier, saves the space required for cable wiring, eliminates the cumbersome steps required by the traditional wiring method, saves working time, and ensures the stability of the connection through multiple fixed locking devices. At the same time, the sealing of the joint is enhanced, and the safety hazards caused by loose connection or poor contact are reduced.

In order to achieve the above object, the technical solution provided by the present invention is:

A cable quick connector assembly, comprising a male connector and a female connector, characterized in that: the assembly as a whole is in an inverted "L"-shaped structure; the male connector comprises a male connector housing (12), a locking copper column (13), a winding core terminal (14), a locking sheath (15), an insulating sheath (16), a bottom plate (17), an insulating layer (18) and a fastening bolt; a cavity (19) is provided in the male connector housing (12), the insulating layer (18) is placed in the cavity (19), a conical through hole (20) is machined at the bottom of the cavity (19) for connecting with the insulating sheath (16), the insulating sheath (16) is provided with a conical portion corresponding to the conical through hole, a through hole is provided at the edge of the male connector housing (12), and the bolt is fixed to the bottom plate (17) through the through hole; the female connector comprises a female connector housing (1), an insulating layer (2), a locking bolt (3), a nut (4), an insulating sheath (5), a fastening sheath (6), an electric A cable terminal (7), a fastening joint (8), a sheath joint (9), a locking nut retaining ring (10), a locking nut (11) and a fastening bolt; one end of the cable terminal (7) is connected to the cable, and the other end is fixed to the fastening joint (8); an insulating sheath (5) is provided on the outer layer of the fastening joint (8) and the cable terminal (7); a fastening sheath (6) is provided on the outside of the insulating sheath (5); a first guide groove (27) is provided at the connection between the female connector shell and the sheath joint (9); after the fastening sheath (6) is connected to the sheath joint (9), the sheath joint (9) is inserted into the first guide groove (27); an inner cavity (28) is provided inside the female connector (1); an insulating layer (2) is placed in the inner cavity (28); a second guide groove (29) corresponding to the shape of the fastening joint (8) is processed on one side of the insulating layer (2); the fastening joint (8) is placed in an empty groove (30) of the insulating layer (2) along the second guide groove (29).

Specifically, the locking copper column (13) is placed inside the insulating sheath (16), one end of the locking copper column (13) is connected to the winding core terminal (14), and the other end passes through the cavity (19) and extends out of the male connector housing (12).

Specifically, one end of the winding wire core terminal (14) is provided with an inner cavity (21) connected to the cable, and the other end is connected to the locking copper column (13), the locking copper column (13) is provided with a threaded hole (22), and the winding wire core terminal (14) is fixed to the threaded hole (22) of the locking copper column (13) by means of bolts.

Specifically, a locking sleeve (15) is provided outside the insulating sleeve (16), the locking sleeve (15) is fixed on a bottom plate (17), and the bottom plate (17) is provided with a tapered hole (23) corresponding to the tapered portion of the insulating sleeve (16).

Specifically, a receiving groove (25) is provided on the outer diameter of the connection between the female connector and the male connector, and a locking nut (11) and a locking nut retaining ring (10) are installed in the receiving groove (25). A circle of locking threads (26) is provided in the receiving groove (25) for fixing the locking nut retaining ring (10). When the locking nut (11) is placed in a fixed position along the female connector receiving groove (25), the locking nut retaining ring (10) is locked on the female connector housing (1) through the threads (26), thereby limiting the locking nut 11.

Specifically, the locking contact surface (33) of the fastening joint (8) of the female joint contacts the end surface of the locking copper column (13) of the male joint, the fastening joint (8) and the locking copper column (13) are fastened together using a locking bolt (3), and the nut (4) is installed on the female joint housing (1) to seal the inner cavity (28).

Specifically, the winding core terminal (14) is made of copper, the fastening sheath (6) is detachable, and the insulating sheath (5) is made of rubber.

The present invention also includes a method for using the cable quick connector assembly according to any one of claims 1 to 7, comprising the following steps:

1) Connect the stator winding copper wire of the motor to the winding core terminal (14), and then fix it to the male connector with bolts;

2) Connect the power cable that supplies power to the motor to the female connector in the quick connector assembly;

3) Connect the male connector and female connector of the power cable.

Specifically, when the male connector is connected to the female connector, the locking nut (11) moves along the outer diameter (31) of the male connector housing (12) and is connected to the outer thread (32) of the outer diameter of the male connector housing (12) through the locking nut (11). When the thread is tightened, the locking contact surface (33) of the fastening connector (8) of the female connector contacts the end surface of the locking copper column (13) of the male connector. The nut (4) of the female connector is opened, and the fastening connector (8) and the locking copper column (13) are fastened and connected using the bolt (3). After the connection is completed, the nut (4) is installed back into the female connector housing (1). When the cable quick connector needs to be disassembled, the nut (4) is opened, and after the locking bolt (3) is loosened, the locking nut (11) moves outward along the thread (32) of the male connector housing. After the thread is loosened, the male connector and the female connector are no longer in contact, and the quick connector is in a disconnected state.

The present invention also includes a motor, comprising the cable quick connector assembly according to any one of claims 1-7.

Compared with the prior art, the advantages of the present invention are:

1. Compared with the old wiring method, the present invention adopts the mechanical structure of the "L"-shaped quick connector assembly for cable connection, which is not only compact in structure, but also improves the speed of cable connection and removal, saves workload and operation time, and improves work efficiency;

2. Compared with the old wiring method, the mechanical structure of the present invention is simple, reliable and strong, and the components are closely matched, which improves the safety and durability of the joint. It is not only easy to use, but also can maintain good stability in various environments.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1A is an external structural diagram of a joint assembly;

FIG1B is a diagram showing the internal structure of the joint assembly;

FIG2A is an external structural diagram of a male connector;

FIG2B is a diagram showing the internal structure of the male connector;

FIG3A is an external structural diagram of a female connector;

FIG3B is a diagram showing the internal structure of the female connector;

FIG4 is a structural diagram of the joint assembly in a disassembled state;

FIG5 is a structural diagram of the joint assembly connection process;

FIG. 6 is a structural diagram of the joint assembly in its assembled state.

DETAILED DESCRIPTION

In order to further understand the content of the present invention, the present invention is described in detail in conjunction with the accompanying drawings and embodiments.

The structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention, so they have no substantial technical significance. Any modification of the structure, change of the proportion relationship or adjustment of the size, without affecting the effects and purposes that can be achieved by the present invention, should still fall within the scope of the technical content disclosed by the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and so on quoted in this specification are only for the convenience of description, and are not used to limit the scope of implementation. The change or adjustment of their relative relationship should also be regarded as the scope of implementation of the present invention without substantially changing the technical content.

The present invention will be further described below in conjunction with the embodiments.

The high-power motor cable quick connector assembly consists of a male connector and a female connector. The overall assembly is an inverted "L" shape.

The male connector, as shown in FIGS. 1A and 1B and FIGS. 2A and 2B, comprises a male connector housing 12, a locking copper column 13, a winding core terminal 14, a locking sheath 15, an insulating sheath 16, a bottom plate 17, an insulating layer 18 and a fastening bolt. A cavity 19 is provided in the male connector housing 12, and a conical through hole 20 is processed at the bottom of the cavity 19 for connecting with the insulating sheath 16. Six through holes are provided in the male connector housing 12 and fixed to the base plate 17 by bolts. The winding core terminal 14 is used as a connecting accessory between the motor stator winding and the connector assembly, and is usually made of a material with good conductive properties, such as copper. Since the motor winding generally uses enameled wire, before the winding core is connected to the terminal 14, the insulation layer of the copper wire needs to be stripped according to the length of the inner cavity 21 of the terminal 14, and the smoothness of the copper wire cut needs to be ensured. After the copper wire is cleaned, it is placed in the terminal 14, and the inner cavity 21 of the terminal 14 is squeezed using hydraulic pliers or other extrusion tools to ensure that the terminal 14 can be completely pressed together with the copper wire. The clamped terminal 14 needs to be fixed to the threaded hole 22 of the locking copper column 13 by bolts; when the terminal 14 is fixed, the insulating sheath 16 is put on the outside of the locking copper column 13. After the insulating sheath 16 reaches the limit position, two metal locking sheaths 15 are buckled on the outside of the insulating sheath 16. The two metal locking sheaths 15 are connected and locked by bolts. The squeezing force between the two sheaths will cause the insulating sheath 16 to deform, so that the power cable will not shake or move; after the locking sheath 15 is installed in place, the copper column 13 passes through the tapered hole 23 of the bottom plate 17 and is screwed in The locking sleeve 15 is fixed to the base plate 17 by bolts. The insulating sleeve 16 will be deformed during the tightening process of the bolts, thereby increasing the sealing between the locking sleeve 15 and the base plate 17 while fixing the locking sleeve 15. After the locking sleeve 15 is installed, the six through holes 24 provided on the male connector housing 12 are fixed to the base plate 17 by bolts. When all connections are completed, an insulating layer 18 is placed in the cavity 19 of the housing 12. The material of the insulating layer 18 can be selected from high-strength materials such as epoxy resin with good electrical insulation properties, which can provide insulation protection while increasing the overall structural strength.

The female connector is connected to the male connector, and the two components are arranged opposite to each other, as shown in Figures 1A, 1B, and Figures 3A and 3B. The female connector includes a female connector shell 1, an insulating layer 2, a locking bolt 3, a nut 4, an insulating sheath 5, a fastening sheath 6, a cable terminal 7, a fastening joint 8, a sheath joint 9, a locking nut retaining ring 10, a locking nut 11 and a fastening bolt. The outer diameter of the connection between the female connector and the male connector is provided with a receiving groove 25, and the locking nut 11 and the locking nut retaining ring 10 are installed in the female connector receiving groove 25. The receiving groove 25 is provided with a circle of locking thread 26 for fixing the locking nut retaining ring 10. When the locking nut 11 is placed in a fixed position along the female connector outer diameter receiving groove 25, the locking nut retaining ring 10 is locked on the female connector housing 1 through the thread 26 to achieve the limitation of the locking nut 11; before the power cable is connected to the female connector, the cable cleaning must be completed as required to ensure the smoothness between the copper wire and the cable terminal 7 to prevent the cable from loosening after installation. After the hydraulic tool is used to complete the extrusion of the terminal 7 and the cable, the cable terminal 7 is fixed to the fastening joint 8 by bolts. After installation, the insulating sheath 5 is put on the outer layer of the fastening joint 8. After the sheath 5 is installed, the metal fastening sheath 6 is installed on the outside of the insulating sheath 5. The fastening sheath 6 is detachable and can be fastened by bolts. The insulating sheath 5 can be made of rubber material, and the two ends of the fastening sheath 6 are fastened by bolts. The insulating sheath 5 is deformed due to pressure, and the cable terminal 7 and the fastening joint 8 can be squeezed and limited to improve the stability of the cable connection. After the fastening joint 8, the fastening sheath 6 and the sheath joint 9 are connected, one end of the sheath joint 9 is placed into the inner cavity 28 of the female connector shell 1 along the guide groove 27 of the female connector shell 1. Before installation, the inner cavity 28 needs to be placed in the insulating layer 28. A square guide groove 29 with the same shape as the fastening joint 8 is pre-processed on one side of the insulating layer 2. The fastening joint 8 is placed into the empty groove 30 of the insulating layer 2 along the insulating layer guide groove 29. When the insulating sheath 5 and the insulating layer 2 are completely in contact, the sheath joint 9 and the female connector shell 1 are connected and fixed with bolts. A threaded through hole is left at the head of the female connector shell. When the male connector and the female connector are connected, the locking bolt 3 is inserted to connect and fix the fastening joint 8 and the locking copper column 13. After the connection is completed, the nut 4 is sealed through the thread.

The usage of the quick connector assembly is shown in Figure 4-6.

When the cable is connected:

1) Connect the motor's stator winding copper wire to the terminal, and then fix it to the male connector with bolts;

2) Connect the power cable that supplies power to the motor to the female connector in the quick connector;

3) Connect the male connector and female connector of the power cable;

When removing the cable, disconnect the power supply first, then separate the male and female connectors.

When the male connector is connected to the female connector, the locking nut 11 moves along the outer diameter 31 of the male connector housing 12, and is connected to the external thread 32 of the outer diameter of the male connector housing 12 through the locking nut 11. When the thread is tightened, the locking contact surface 33 of the fastening joint 8 of the female connector contacts the end surface of the locking copper column 13 of the male connector. The nut 4 of the female connector is opened, and the fastening joint 8 and the locking copper column 13 are fastened and connected using the bolt 3. After the connection is completed, the nut 4 is installed back into the female connector housing 1 to seal the inner cavity 28. When the cable quick connector needs to be disassembled, the nut 4 is opened, and after the locking bolt 3 is loosened, the locking nut 11 moves outward along the thread 32 of the male connector housing. After the thread is loosened, the male connector and the female connector are no longer in contact, and the quick connector is in a disconnected state.

The present invention and its embodiments are described schematically above, and the description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. Therefore, if a person skilled in the art is inspired by it and designs a structural method and an embodiment similar to the technical solution without creativity without departing from the purpose of the invention, they shall all fall within the protection scope of the present invention.

Claims (10)

1. The utility model provides a cable quick-operation joint subassembly, includes male joint and female joint, its characterized in that: the whole assembly is in an inverted L-shaped structure; the male connector comprises a male connector shell (12), a locking copper column (13), a winding wire core binding post (14), a locking sheath (15), an insulating sheath (16), a bottom plate (17), an insulating layer (18) and a fastening bolt; a cavity (19) is arranged in the male connector shell (12), an insulating layer (18) is placed in the cavity (19), a conical through hole (20) is processed at the bottom of the cavity (19) and is used for being connected with an insulating sheath (16), the insulating sheath (16) is provided with a conical part corresponding to the conical through hole, a through hole is formed in the edge of the male connector shell (12), and a bolt is fixed on a bottom plate (17) through the through hole; the female connector comprises a female connector shell (1), an insulating layer (2), a locking bolt (3), a screw cap (4), an insulating sheath (5), a fastening sheath (6), a cable binding post (7), a fastening connector (8), a sheath connector (9), a locking nut retainer ring (10), a locking nut (11) and a fastening bolt; one end of the cable binding post (7) is connected with the cable, one end of the cable binding post is fixed on the fastening connector (8), the insulating sheath (5) is arranged on the outer layer of the fastening connector (8) and the cable binding post (7), the fastening sheath (6) is arranged outside the insulating sheath (5), a first guide groove (27) is formed in the joint of the female connector shell and the sheath connector (9), after the fastening sheath (6) is connected with the sheath connector (9), the sheath connector (9) is inserted into the first guide groove (27), an inner cavity (28) is formed in the female connector (1), the insulating layer (2) is placed in the inner cavity (28), a second guide groove (29) corresponding to the shape of the fastening connector (8) is processed on one side of the insulating layer (2), and the fastening connector (8) is placed in the empty groove (30) of the insulating layer (2) along the second guide groove (29).

2. The cable quick connector assembly of claim 1, wherein: the locking copper column (13) is placed inside the insulating sheath (16), one end of the locking copper column (13) is connected with the winding wire core binding post (14), and the other end of the locking copper column penetrates through the cavity (19) and extends out of the male connector shell (12).

3. The cable quick connector assembly of claim 2, wherein: one end of the winding wire core binding post (14) is provided with an inner cavity (21) connected with a cable, the other end of the winding wire core binding post is connected with the locking copper post (13), the locking copper post (13) is provided with a threaded hole (22), and the winding wire core binding post (14) is fixed at the position of the threaded hole (22) of the locking copper post (13) through a bolt.

4. The cable quick connector assembly of claim 1, wherein: the outside of the insulating sheath (16) is provided with a locking sheath (15), the locking sheath (15) is fixed on the bottom plate (17), and the bottom plate (17) is provided with a conical hole (23) corresponding to the conical part of the insulating sheath (16).

5. The cable quick connector assembly of claim 1, wherein: the external diameter of the junction of female joint and public joint is equipped with holding tank (25), and lock nut (11) and lock nut retaining ring (10) are installed in holding tank (25) department, and holding tank (25) department is equipped with round locking screw thread (26) and is used for fixed lock nut retaining ring (10), places fixed position department along female joint holding tank (25) when lock nut (11), locks lock nut retaining ring (10) on female joint shell (1) through screw thread (26) again, realizes the spacing to lock nut 11.

6. The cable quick connector assembly of claim 1, wherein: the fastening joint (8) locking contact surface (33) of the female joint is contacted with the end surface of the locking copper column (13) of the male joint, the fastening joint (8) and the locking copper column (13) are fastened and connected by using the locking bolt (3), and the nut (4) is arranged on the female joint shell (1) and used for sealing the inner cavity (28).

7. The cable quick connector assembly of claim 1, wherein: the winding wire core binding post (14) is copper, the fastening sheath (6) is detachable, and the insulating sheath (5) is made of rubber.

8. A method of using the cable quick connector assembly of any one of claims 1-7, comprising the steps of:

1) Connecting a stator winding copper wire of the motor with a winding wire core binding post (14), and fixing the motor on a male connector through a bolt;

2) Connecting a power cable for supplying power to the motor with a female connector in the quick connector assembly;

3) And connecting the male connector and the female connector of the well-connected power cable.

9. The method of use according to claim 8, wherein: when the male connector is connected with the female connector, the lock nut (11) moves along the outer diameter (31) of the male connector shell (12), the lock nut (11) is connected with the external thread (32) of the outer diameter of the male connector shell (12), after the threads are screwed, the locking contact surface (33) of the fastening connector (8) of the female connector is contacted with the end face of the locking copper column (13) of the male connector, the nut (4) of the female connector is opened, the fastening connector (8) is fastened and connected with the locking copper column (13) by using the bolt (3), and after the connection is completed, the nut (4) is installed back to the female connector shell (1); when the cable quick connector needs to be disassembled, the nut (4) is opened, after the locking bolt (3) is loosened, the locking nut (11) moves outwards along the male connector shell screw thread (32), after the screw thread is loosened, the male connector and the female connector are not contacted any more, and the quick connector is in a disconnected state.

10. An electric machine comprising the cable quick connector assembly of any one of claims 1-7.