CN110932019A

CN110932019A - Power cable joint

Info

Publication number: CN110932019A
Application number: CN201911233073.4A
Authority: CN
Inventors: 郑少恒; 巩锐锐; 苏杨; 尹永亮
Original assignee: China Electrical Construction Group Hebei Engineering Co Ltd
Current assignee: China Electrical Construction Group Hebei Engineering Co Ltd
Priority date: 2019-12-05
Filing date: 2019-12-05
Publication date: 2020-03-27

Abstract

The invention discloses a power cable joint which comprises a first connecting pipe and a second connecting pipe, fixing devices, a first connecting joint and a second connecting joint, wherein the first connecting pipe and the second connecting pipe are used for respectively extending two cables, the fixing devices are respectively fixedly arranged on the first connecting pipe and the second connecting pipe and are used for fixing the corresponding cables, the first connecting joint and the second connecting joint are used for respectively extending and conducting electric cores of the two cables, the first connecting pipe is communicated with the first connecting joint, the second connecting pipe is communicated with the second connecting joint, and the power cable joint also comprises a locking device which is used for detachably connecting the first connecting joint and the second connecting joint. The invention has high safety factor, strong stability and easy use, can rapidly split and install the two ends of the cable, is convenient for maintenance and test, and is suitable for the connection of the power cable.

Description

Power cable joint

Technical Field

The invention belongs to the technical field of power equipment, and particularly relates to a power cable connector.

Background

The power cable is used for transmitting and distributing electric energy, and is commonly used for urban underground power grids, power station leading-out lines, power supply inside industrial and mining enterprises and transmission lines under river-crossing seawater; after the power cable is laid, in order to form a continuous line, all the sections of the cable must be connected into a whole, and the connection points are called cable joints; with the development of economy, the demand of people on power resources is gradually increased, the number of power grids is greatly increased, in this case, the importance of the power cable in a power system is more prominent, and the enhancement of the overhaul and test of the power cable becomes important content in power work.

In the maintenance and the experiment to power cable, because power cable connects the structure to be in the locking type usually, the split is all comparatively complicated, difficult with the installation work, and is very unfavorable to power cable's maintenance and experiment, has increased staff's maintenance and experimental work load to work efficiency has been reduced.

Disclosure of Invention

In order to solve the defects in the prior art, the invention aims to provide the power cable connector so as to achieve the purposes of facilitating disassembly and assembly, reducing the workload of maintenance and test of the power cable and improving the working efficiency.

In order to achieve the purpose, the technical scheme adopted by the invention is as follows: the utility model provides a power cable connects, includes first connecting pipe and the second connecting pipe that is used for stretching into respectively two cables, sets firmly respectively on first connecting pipe and second connecting pipe be used for with the fixed fixing device of corresponding cable, be used for stretching into respectively the electric core of two cables and the first connector and the second connector that switch on, first connecting pipe and first connector intercommunication set up, the second connecting pipe sets up with second connector intercommunication, still includes the locking device that can dismantle first connector and second connector and connect.

As a limitation of the present invention: the cable connector comprises a first connector and a second connector, wherein the first connector and the second connector are arranged in a cavity of the first connector and the second connector, one side of the first connector and one side of the second connector, which are close to the first connector and the second connector, of the cable are sequentially provided with a conducting rod and a conducting block, which are conducted with the end point of the cable and can be mutually adaptive, and one side of the first connector and one side of the second connector, which are close to the connecting end of the cable, are symmetrically provided with two same pressing devices which can.

As a limitation of the present invention: the fixing device comprises a screw rod penetrating through the inside and the outside of the corresponding connecting pipe, an internal thread matched with the screw rod is arranged on the hole wall of the connecting pipe penetrated by the screw rod, and a rotating handle convenient for the screw rod to rotate is arranged at one end of the screw rod, extending out of the connecting pipe.

As a limitation of the present invention: the locking device comprises a connecting block fixedly arranged on the outer wall of the first connecting pipe, a connecting plate hinged to the connecting block, a clamping head fixedly arranged on the connecting plate, and a locking block fixedly arranged on the outer wall of the second connecting pipe, wherein a clamping groove capable of being clamped with the clamping head is formed in the outer surface of the locking block; or the clamping device comprises a connecting block fixedly arranged on the outer wall of the second connecting pipe, a connecting plate hinged to the connecting block, a clamping head fixedly arranged on the connecting plate and a locking block fixedly arranged on the outer wall of the first connecting pipe, wherein the outer surface of the locking block is provided with a clamping groove capable of being clamped with the clamping head.

As a further limitation of the invention: the conducting rod is in a strip shape extending towards the connecting end, and the connecting end of the conducting block is provided with a pit matched with the shape of the conducting rod.

As a further limitation of the invention: the pressing device comprises an ejector rod used for pressing the cable and an insulation board fixedly arranged on the inner wall of the corresponding connector, the ejector rod is provided with external threads, the insulation board is provided with an internal thread through hole matched with the ejector rod, the ejector rod penetrates through the end face of one side, away from the connecting end, of the insulation board and the corresponding connector and extends out of the corresponding connector, and the end face of the ejector rod used for pressing the cable is fixedly provided with an insulation block.

As a further limitation of the invention: the pressing device comprises an ejector rod used for pressing the cable, an insulating plate which is arranged in an inner cavity of a corresponding connector and can slide along the axial direction of the ejector rod relatively, the ejector rod is provided with external threads, an internal thread through hole matched with the ejector rod is formed in the insulating plate, the ejector rod penetrates through the end face, away from one side of the connecting end, of the insulating plate and the corresponding connector and stretches out the corresponding connector, the end face, used for pressing the cable, of the ejector rod is provided with an insulating block, the pressing device further comprises a spring fixedly arranged on the insulating plate and close to one end face of the cable, and a fixing plate fixedly connected with the other end of the spring, the spring is respectively arranged.

As a further limitation of the invention: the two locking devices are symmetrically arranged on two opposite side surfaces of the outer walls of the first connecting pipe and the second connecting pipe.

As still further limiting the invention: the connecting end of the conduction block is also provided with a conduction pipe coated on the outer side of the conduction block, the conduction pipe is hollow and extends out of the connecting end, and the end face of the conduction pipe is open, so that a space for inserting the conduction rod is formed.

As a further limitation of the invention: a first fixing block for stabilizing the conducting rod is fixedly arranged on the inner wall of the first connector, and the first fixing block is penetrated by the conducting rod and is provided with a gap for enabling the conducting rod and the conducting rod to slide relatively; the inner wall of the second connector is fixedly provided with a second fixed block used for stabilizing the conducting block, and the second fixed block is penetrated by the conducting block and is provided with a gap which enables the second fixed block and the conducting block to slide relatively.

Due to the adoption of the technical scheme, compared with the prior art, the invention has the following beneficial effects:

(1) the cable fixing device is provided with the first connecting pipe and the second connecting pipe which can respectively extend two cable cores, the extended cables are fixed through the fixing device, and the cables are quickly clamped and released through the adjusting screw rod; the first connector and the second connector which can extend and conduct the two cable cells are arranged, and the two cable cells are quickly conducted and disconnected by adjusting the ejector rod; the locking device capable of detachably connecting the first connector and the second connector is arranged, and the two connectors are quickly clamped and separated through the clamping plate and the clamping groove, so that the cable connector is quickly and conveniently disassembled and installed, the workload of maintenance and test of a power cable is reduced, and the working efficiency is effectively improved;

(2) the invention is provided with the conduction block, the conduction pipe and the conduction rod, the conduction area is increased through the pits arranged on the conduction block, the resistance is reduced, and the heat dissipation capacity is reduced; the conduction pipe is wrapped on the outer side of the conduction block and extends out of the connecting end to form a space into which the conduction rod can be inserted, the conduction rod can be effectively clamped into the conduction pipe, the conduction rod is tightly contacted with the conduction block by adjusting the pressing device, and the stability and the safety of a cable joint are improved; through the arrangement of the fixing block, a stable path is provided for the movement of the conducting rod and the conducting block, and the stability and the safety of the cable joint are further improved;

(3) the cable connector is provided with the spring and the fixing plate, the deviation of the cable core can be prevented through the matching arrangement between the spring and the insulating plate, the ejector rod is further enabled to extrude the cable core, the cable core is enabled to be better contacted with the conducting rod and the conducting block, and the conducting performance of the cable connector is better guaranteed.

In conclusion, the cable connecting device has the advantages of high safety coefficient, strong stability and easiness in use, can be used for quickly splitting and installing two ends of a cable, is convenient to overhaul and test, and is suitable for connection of power cables.

Drawings

The invention is described in further detail below with reference to the figures and the embodiments.

FIG. 1 is a schematic perspective view of an embodiment of the present invention;

FIG. 2 is a schematic diagram of the internal structure of the embodiment of the present invention;

FIG. 3 is a schematic view of a fixing device 3 according to an embodiment of the present invention;

fig. 4 is an enlarged schematic view of a portion a of fig. 2.

In the figure: 1-a first connecting pipe, 2-a second connecting pipe, 3-a fixing device, 31-a screw rod, 32-a rotating handle, 33-a gasket, 4-a first connecting head, 5-a second connecting head, 6-a conducting rod, 7-a conducting block, 8-a conducting pipe, 9-a first fixing block, 10-a second fixing block, 11-a pressing device, 111-a top rod, 112-an insulating plate, 113-a spring, 114-a fixing plate, 115-an insulating block, 116-a rotating rod, 12-a locking device, 121-a connecting block, 122-a connecting plate, 123-a clamping head, 124-a locking block, 125-a clamping groove and 126-a fixing sleeve.

Detailed Description

Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the power cable joint described herein is a preferred embodiment, is for illustration and explanation only, and is not to be construed as limiting the invention.

Example Power Cable connector

The embodiment is as shown in fig. 1, fig. 2, fig. 3, and fig. 4, and is a power cable connector, which includes a first connecting pipe 1 and a second connecting pipe 2 for respectively extending two cables, a fixing device 3 fixedly disposed on the first connecting pipe 1 and the second connecting pipe 2 and used for fixing the cables, a first connecting head 4 and a second connecting head 5 respectively communicated with the first connecting pipe 1 and the second connecting pipe 2 and used for extending two cable cores into and communicating the two cable cores, and a locking device 12 detachably connecting the first connecting head 4 and the second connecting head 5.

The first connecting pipe 1 and the second connecting pipe 2 are hollow pipes with two open ends, two cable cores to be communicated respectively extend into the hollow pipes from one open end of the first connecting pipe 1 and one open end of the second connecting pipe 2, the pipe walls of the first connecting pipe 1 and the second connecting pipe 2 are respectively and oppositely provided with a pair of fixing devices 3, each fixing device 3 comprises a screw rod 31 penetrating through the corresponding connecting pipe, the inner and outer screw rods 31 of the first connecting pipe 1 and the second connecting pipe 2 are provided with inner screw threads matched with the screw rods 31 by the hole walls penetrated by the screw rods 31, one end of each screw rod 31 extending out of the connecting pipe is provided with a rotating handle 32 facilitating the rotation of the screw rod 31, the other end of each screw rod 31 is sleeved with an arc-shaped gasket 33 used for clamping a cable, a gap capable of enabling the gasket 33 and the screw rod 31 to rotate relatively is reserved, the cables extending into the first and

second connection pipes

1 and 2 can be fixed, and the arc shape of the gasket 33 can more firmly clamp the extended cables. Another open end of first connecting pipe 1 and second connecting pipe 2 is connected with hollow first connector 4 and second connector 5 perpendicularly, first connecting pipe 1 and first connector 4, second connecting pipe 2 all communicates the setting with the junction of second connector 5, first connector 4 and second connector 5 are the tubulose, the cross sectional shape is the same and the terminal surface sets up relatively, its relative terminal surface is the opening face, the terminal surface of keeping away from mutually is the confining surface, treat that two cable electricity cores of intercommunication get into first connector 4 and the 5 intracavity of second connector after first connecting pipe 1 and second connecting pipe 2 stretch into, switch on through the realization of switch on pole 6 and the piece 7 that switches on of contact near the link, and compress tightly and be fixed in switch on pole 6 and the piece 7 that switches on through the closing device 11 who keeps away from the link.

The conducting rod 6 is arranged on one side, close to the opening surface, of the cable in the first connector 4, the conducting block 7 is arranged on one side, close to the opening surface, of the cable in the second connector 5, the conducting rod 6 and the conducting block 7 can be connected and conducted, the cross section shapes are the same, the conducting rod 6 is in a strip shape, a pit matched with the conducting rod 6 in shape is formed in one end, close to the opening surface, of the conducting block 7, a hollow conducting pipe 8 coated on the outer side of the conducting block 7 is further arranged, the conducting pipe 8 extends out to the connecting end, the end face is opened, a space into which the conducting rod 6 can be inserted is formed, after the conducting rod 6 is inserted, the rod end extends into the pit of the conducting block 7, the outer wall of the rod is in contact with the inner wall of the; the inner wall of the first connector 4 is fixedly provided with a first fixing block 9 for stabilizing the conducting rod 6, the first fixing block 9 is penetrated by the conducting rod 6 and is provided with a gap which enables the first fixing block and the conducting rod to slide relatively, the inner wall of the second connector 5 is fixedly provided with a second fixing block 10 for stabilizing the conducting block 7, and the second fixing block 10 is penetrated by the conducting block 7 and is provided with a gap which enables the first fixing block and the conducting rod to slide relatively.

The first connector 4 and the second connector 5 are symmetrically provided with two identical pressing devices 11 which are capable of pressing and fixing the cable on the conducting rod 6 and the conducting block 7 at one side of the cable away from the connecting end, the pressing devices 11 comprise push rods 111 for pressing the cable and insulating plates 112 arranged in inner cavities of the corresponding connectors, the insulating plates 112 can be fixedly arranged on the inner walls of the corresponding connectors and can also slide relatively along the axial direction of the push rods 111, when the insulating plates 112 can slide relatively along the axial direction of the push rods 111, the pressing devices 11 further comprise springs 113 and fixing plates 114, when the insulating plates 112 are fixedly arranged on the inner walls of the corresponding connectors, the pressing devices 11 do not comprise the springs 113 and the fixing plates 114, in the embodiment, a scheme that the insulating plates 112 can slide relatively along the axial direction of the push rods 111 is adopted, the push rods 111 are cylindrical and penetrate through the end faces of the, a rotating rod 116 or a handle which is convenient for rotating the ejector rod 111 is fixedly arranged at one end extending out of the connector, in the embodiment, the rotating rod 116 is selected, one end, away from the rotating rod 116, of the ejector rod 111 is a smooth surface, an external thread is arranged at one end, close to the rotating rod 116, of the ejector rod, an internal thread is arranged in a through hole, penetrated by the ejector rod 111, of the insulating plate 112, when the ejector rod 111 is pulled out, the ejector rod and the insulating plate 112 slide relatively, so that a cable core can be conveniently stretched in, and when the ejector rod 111 extrudes the cable core, the cable is in threaded connection with; an insulating block 115 is fixedly arranged on the end face, used for compressing the cable, of the ejector rod 111, the insulating block 115 is cylindrical, the diameter of the insulating block 115 is larger than that of the ejector rod 111, the ejector rod 111 is connected with the insulating block 115 through a bearing, the ejector rod 111 is fixedly connected with an inner ring of the bearing, and the insulating block 115 is fixedly connected with an outer ring of the bearing so as to ensure that the insulating block 115 and the cable do not rotate relatively when the ejector rod 111 rotates; in this embodiment, the pressing device 11 further includes a spring 113 fixedly disposed on an end surface of the insulating plate 112 close to the cable, and a fixing plate 114 fixedly connected to the other end of the spring 113, the spring 113 is disposed on each of two sides of the rod 111, and the size of the fixing plate 114 is matched with that of the spring 113 and is fixedly connected to an inner wall of the corresponding connector; two cable cores to be communicated are fixed in cavities of the first connector 4 and the second connector 5 through the pressing device 11, and after the two cable cores are communicated with the conduction block 7 through the conduction rod 6, the first connector 4 and the second connector 5 are locked through the locking device 12 fixedly arranged on the outer walls of the first connector 4 and the second connector 5.

The two locking devices 12 are symmetrically arranged on two opposite side surfaces of the outer walls of the first connecting pipe 1 and the second connecting pipe 2, each locking device 12 comprises a connecting block 121 fixedly arranged on the outer wall of the first connecting pipe 1, a connecting plate 122 hinged to the connecting block 121, a clamping head 123 fixedly arranged on the connecting plate 122 and a locking block 124 fixedly arranged on the outer wall of the second connecting pipe 2, and a clamping groove 125 capable of being clamped with the clamping head 123 is formed in the outer surface of each locking block 124; the outer walls of the first connecting pipe 1 and the second connecting pipe 2 are respectively provided with a fixing sleeve 126 connected with the outer wall of the first connecting pipe 1 and a fixing sleeve 126 connected with the outer wall of the second connecting pipe 2, the connecting blocks 121 of the two locking devices 12 are fixedly connected with two opposite side surfaces of the fixing sleeves 126 on the first connecting pipe 1, the outer surface of each connecting block 121 is hinged with a connecting plate 122 through a pin shaft, and one end, far away from the pin shaft, of each connecting plate 122 is; the opposite both sides face of the fixed cover 126 on the second connecting pipe 2 all sets firmly latch segment 124, the surface of latch segment 124 is opened has the draw-in groove 125 that suits with dop 123, can be effectively with the inside of dop 123 joint to latch segment 124, make first connecting block 121 and second connecting block 121 can be quick fixed and split, connecting block 121 in this embodiment, connecting plate 122 and dop 123 set firmly in first connecting pipe 1, latch segment 124 sets firmly in second connecting plate 122, equally, also can set firmly connecting block 121, connecting plate 122 and dop 123 in second connecting pipe 2, latch segment 124 sets firmly in first connecting plate 122.

When the embodiment is used, firstly, two cables respectively extend into the first connecting pipe 1 and the second connecting pipe 2, one end of a cable core is inserted into the first connecting head 4 and the second connecting head 5, the ejector rod 111 is screwed to slide relative to the insulating plate 112, the ejector rod 111 is pulled to make the insulating block 115 away from the cable core, the cable core is inserted to a height exceeding the insulating block 115, then the screw 31 arranged on the first connecting pipe 1 and the second connecting pipe 2 is rotated to fixedly clamp the cable to prevent the cable from falling off, then the ejector rod 111 is rotated to make the threaded connection between the ejector rod 111 and the insulating plate 112, the ejector rod 111 is continuously rotated until the cable core is tightly attached to the conducting rod 6 and the conducting block 7, at this time, the conducting rod 6 is inserted into the conducting pipe 8 to make the conducting rod 6 tightly attached to the conducting block 7, finally, the angles of the first connecting pipe 1 and the second connecting pipe 2 are adjusted to make the chuck 123 and, the fixing is completed, and if the maintenance or the test is needed, the clamping head 123 is separated from the clamping groove 125, so that the maintenance and the test can be respectively performed on the conductive parts inside the first connector 4 and the second connector 5.

Claims

1. A power cable joint characterized by: including be used for stretching into first connecting pipe and the second connecting pipe respectively with two cables, set firmly respectively on first connecting pipe and second connecting pipe be used for with corresponding cable fixed fixing device, be used for stretching into respectively the electric core of two cables and the first connector and the second connector that switch on, first connecting pipe and first connector intercommunication set up, the second connecting pipe sets up with second connector intercommunication, still includes the locking device that can dismantle the connection with first connector and second connector.

2. The power cable joint of claim 1, wherein: the cable connector comprises a first connector and a second connector, wherein the first connector and the second connector are arranged in a cavity of the first connector and the second connector, one side of the first connector and one side of the second connector, which are close to the first connector and the second connector, of the cable are sequentially provided with a conducting rod and a conducting block, which are conducted with the end point of the cable and can be mutually adaptive, and one side of the first connector and one side of the second connector, which are close to the connecting end of the cable, are symmetrically provided with two same pressing devices which can.

3. A power cable joint according to claim 2, wherein: the conducting rod is in a strip shape extending towards the connecting end, and the connecting end of the conducting block is provided with a pit matched with the shape of the conducting rod.

4. A power cable joint according to claim 3, wherein: the connecting end of the conduction block is also provided with a conduction pipe coated on the outer side of the conduction block, the conduction pipe is hollow and extends out of the connecting end, and the end face of the conduction pipe is open, so that a space for inserting the conduction rod is formed.

5. The power cable joint of claim 4, wherein: a first fixing block for stabilizing the conducting rod is fixedly arranged on the inner wall of the first connector, and the first fixing block is penetrated by the conducting rod and is provided with a gap for enabling the conducting rod and the conducting rod to slide relatively; the inner wall of the second connector is fixedly provided with a second fixed block used for stabilizing the conducting block, and the second fixed block is penetrated by the conducting block and is provided with a gap which enables the second fixed block and the conducting block to slide relatively.

6. A power cable joint according to any one of claims 2-5, characterized in that: the pressing device comprises an ejector rod used for pressing the cable and an insulation board fixedly arranged on the inner wall of the corresponding connector, the ejector rod is provided with external threads, the insulation board is provided with an internal thread through hole matched with the ejector rod, the ejector rod penetrates through the end face of one side, away from the connecting end, of the insulation board and the corresponding connector and extends out of the corresponding connector, and the end face of the ejector rod used for pressing the cable is fixedly provided with an insulation block.

7. A power cable joint according to any one of claims 2-5, characterized in that: the pressing device comprises an ejector rod used for pressing the cable, an insulating plate which is arranged in an inner cavity of a corresponding connector and can slide along the axial direction of the ejector rod relatively, the ejector rod is provided with external threads, an internal thread through hole matched with the ejector rod is formed in the insulating plate, the ejector rod penetrates through the end face, away from one side of the connecting end, of the insulating plate and the corresponding connector and stretches out the corresponding connector, the end face, used for pressing the cable, of the ejector rod is provided with an insulating block, the pressing device further comprises a spring fixedly arranged on the insulating plate and close to one end face of the cable, and a fixing plate fixedly connected with the other end of the spring, the spring is respectively arranged.

8. A power cable joint according to any one of claims 1-5, characterized in that: the fixing device comprises a screw rod penetrating through the inside and the outside of the corresponding connecting pipe, an internal thread matched with the screw rod is arranged on the hole wall of the connecting pipe penetrated by the screw rod, and a rotating handle convenient for the screw rod to rotate is arranged at one end of the screw rod, extending out of the connecting pipe.

9. The power cable joint of claim 8, wherein: the two locking devices are symmetrically arranged on two opposite side surfaces of the outer walls of the first connecting pipe and the second connecting pipe.

10. A power cable joint according to any one of claims 1-5, 9, wherein: the locking device comprises a connecting block fixedly arranged on the outer wall of the first connecting pipe, a connecting plate hinged to the connecting block, a clamping head fixedly arranged on the connecting plate, and a locking block fixedly arranged on the outer wall of the second connecting pipe, wherein a clamping groove capable of being clamped with the clamping head is formed in the outer surface of the locking block; or the clamping device comprises a connecting block fixedly arranged on the outer wall of the second connecting pipe, a connecting plate hinged to the connecting block, a clamping head fixedly arranged on the connecting plate and a locking block fixedly arranged on the outer wall of the first connecting pipe, wherein the outer surface of the locking block is provided with a clamping groove capable of being clamped with the clamping head.