CN118099852A - Power connector and power transmission system - Google Patents

Abstract

The invention provides a power connector and a power transmission system, which comprises a first joint arranged on a first electric device and a second joint arranged on a second electric device, wherein the first joint is provided with a plurality of power transmission pins, the second joint is provided with a corresponding number of power transmission butt joint pieces, and the end parts of the power transmission pins are provided with at least two support parts, the diameter of the end parts in a free state is larger than the inner diameter of the end parts of the power transmission butt joint pieces, so that when the power transmission pins are butted with the power transmission butt joint pieces to transmit electric energy, the at least two support parts can be mutually closely embedded in the end parts of the power transmission butt joint pieces, and the end parts of the power transmission pins are clamped in the end parts of the power transmission butt joint pieces through the restoring force of the at least two support parts, so that even when electric equipment moves and drives the first joint or the second joint, the butt joint between the two support parts are not easy to loose, and the power utilization safety under a moving power utilization scene is ensured.

Description

Power connector and power transmission system

Technical Field

The invention belongs to the technical field of power transmission and distribution, and particularly relates to a power connector and a power transmission system.

Background

In industry and in daily life, there are often remote power distribution and mobile power consumption demands, i.e. the electric equipment is located far from the power supply, and the electric equipment has mobile demands in the use process. For example, for a construction site, there are multiple construction equipment requiring power, while the power distribution cabinet nearest the construction site may be hundreds of meters or more from the site, requiring power to be supplied to each construction equipment from a remote power distribution cabinet. At present, for such electric field scene, the most common method is to insert a common plug into a power socket of a power distribution cabinet, extend a cable connected with the common plug to the vicinity of electric equipment, directly connect the tail end of the cable with the electric equipment or connect the socket for a construction site, insert the plug of the electric equipment into the socket for the construction site, then start to perform electric operation, and utilize the length of the cable to enable the electric equipment to move in a certain range to use electricity. Although this enables remote power distribution and mobile power usage, there are a number of problems:

Firstly, the plug connection between the common plug and the power socket or the socket for the construction site is not firm, and the electric equipment can easily pull the common plug in the moving process, so that the plug connection between the common plug and the power socket or the socket for the construction site is loosened, and the power consumption is interrupted, and in the construction site, the power consumption interruption beyond expectation can cause serious consequences such as construction quality problems and even casualties of construction personnel.

Secondly, all the mobile lines such as a cable line connected to a power grid through a power distribution cabinet, a socket for a construction site and the like are electrified, and whether electric equipment is connected or not is judged, so that on-site constructors have the risk of electric shock due to mistaken contact with the conductive terminals.

Disclosure of Invention

The present invention has been made to solve the above problems, and an object of the present invention is to provide a power connector and a power transmission system capable of firmly connecting and supplying power between power distribution devices such as power transmission cables, with higher safety, and the present invention adopts the following technical scheme:

The invention provides a power connector for electrically connecting a first power transmission and distribution device with a second power transmission and distribution device, which is characterized by comprising the following components: a first connector arranged on the first power transmission and distribution device; and a second connector arranged on the second power transmission and distribution device, wherein the first connector comprises a first main body with a first jogging part and at least two power transmission pins and at least two signal pins penetrating through the first main body, the second connector comprises a second main body with a second jogging part and a corresponding number of power transmission butt-joint pieces and signal butt-joint pieces penetrating through the second main body, the second jogging part is used for jogging the outer end part of the first main body with the outer end part of the second main body in a matching way with the first jogging part, the end part of the power transmission pin is columnar, at least two supporting parts are arranged between the at least two supporting parts, the end part of the power transmission butt-joint piece is tubular, the diameter of the end part of the power transmission pin is larger than the inner diameter of the end part of the power transmission butt-joint piece in a free state, the plurality of power transmission pins comprise one grounding pin and two electric energy pins, the protruding height of the grounding pin is larger than the protruding height of the electric energy pin and the electric energy pin is smaller than the height of the signal pin and the signal pin is consistent with the height of the end part.

The power connector provided by the invention can also have the technical characteristics that the protruding height of the signal pin is 2-5 mm relative to the end face of the first main body, and the protruding height of the grounding pin is 1-3 mm larger than the protruding height of the electric energy pin.

The power connector provided by the invention can also have the technical characteristics that the number of the signal pins and the number of the signal butt-joint parts are two, the signal pins and the signal butt-joint parts are used for being matched with two signal wires to form a closed signal loop for detection, and the signal electricity is a 5V-24V electric signal independent of a power supply.

The power connector provided by the invention can be further characterized in that the first jogged part comprises a cylindrical bulge and a plurality of strip-shaped bulges connected to the inner side of the cylindrical bulge, the second jogged part comprises annular grooves matched with the cylindrical bulge and strip-shaped grooves respectively matched with the strip-shaped bulges, the power transmission needle and the signal needle are respectively arranged between the cylindrical bulge and the strip-shaped bulge, and the power transmission butt joint part and the signal butt joint part are respectively arranged between the annular grooves and the strip-shaped grooves.

The power connector provided by the invention can be further characterized in that at least one clamping groove is formed in the outer peripheral surface of the second embedded part, the outer end part of the first main body is further provided with a cylindrical guide part, the guide part is arranged on the outer periphery of the first embedded part, and at least one guide clamping block is arranged on the inner side of the guide part and used for being matched with the at least one clamping groove to clamp the first main body and the second main body.

The power connector provided by the invention can be further characterized in that the guide clamping block is triangular and blocky, one vertex of the guide clamping block is close to the outer edge of the guide part, the clamping groove is provided with a guide groove section, a turning groove section and a clamping groove section which are sequentially connected, the guide groove section is provided with an opening for allowing the guide clamping block to enter and a guide side wall for enabling the guide clamping block to move towards the clamping section, and the side wall of the clamping groove section is used for being abutted against the edge part of the guide clamping block.

The power connector provided by the invention can also have the technical characteristics that the first power transmission and distribution device and the second power transmission and distribution device are both power transmission cables, and the first connector further comprises: a first housing in which one end of the power transmission cable is inserted; the first cable sealing piece is arranged between the first shell and the power transmission cable and is used for sealing the first shell and the power transmission cable; and a first cable fastener disposed at one end of the first housing for securing one end of the power transmission cable, the second connector further comprising: a second housing in which one end of the power transmission cable is inserted; the second cable sealing piece is arranged between the second shell and the power transmission cable and is used for sealing the second shell and the power transmission cable; and the second cable fastener is arranged at one end of the second shell and used for fixing one end of the power transmission cable.

The power connector provided by the invention can be further characterized in that the first power transmission and distribution device is a distribution box and is provided with a live wire, a zero line, a ground wire, two signal wires and a relay, the relay is provided with two signal ends, the first connector is arranged on the distribution box, the three power transmission pins comprise a grounding pin and two electric energy pins, the grounding pin is connected with the ground wire, the two electric energy pins are respectively connected with the live wire and the zero line through the relay, the number of the signal pins is two, one signal pin is connected with one signal wire, the other signal pin is connected with one signal end of the relay, and the other signal end of the relay is connected with the other signal wire.

The power connector provided by the invention can also have the technical characteristics that the second power transmission and distribution device is a distribution box and is provided with a live wire, a zero wire, a ground wire, two signal wires and a relay, wherein the relay is provided with two signal ends, the second connector is arranged on the distribution box, and the second connector further comprises: the second main body is arranged on the base body in a penetrating manner; the protective cover is rotatably arranged on the seat body; and the elastic piece is used for driving the protective cover to press towards the base body, when the protective cover is pressed on the base body, the protective cover completely covers one end of the second main body, the three power transmission butt-joint pieces comprise a grounding butt-joint piece and two electric energy butt-joint pieces, the grounding butt-joint pieces are connected with the ground wire, the two electric energy butt-joint pieces are respectively connected with the live wire and the zero wire through the relay, the number of the signal butt-joint pieces is two, one signal butt-joint piece is connected with one signal wire, the other signal butt-joint piece is connected with one signal end of the relay, and the other signal end of the relay is connected with the other signal wire.

The invention provides a power transmission system, which is characterized by comprising: at least two power transmission and distribution devices; and at least one power connector for electrically connecting the two power transmission and distribution devices.

The actions and effects of the invention

The power connector and the power transmission system comprise a first joint arranged on a first electric device and a second joint arranged on a second electric device, wherein the first joint is provided with at least two power transmission pins, the second joint is provided with a corresponding number of power transmission butt joint pieces, and the end parts of the power transmission pins are provided with at least two support parts, the diameter of the end parts in a free state is larger than the inner diameter of the end parts of the power transmission butt joint pieces, so that when the power transmission pins are butted with the power transmission butt joint pieces to transmit electric energy, the at least two support parts can be mutually closely embedded in the end parts of the power transmission butt joint pieces, and the end parts of the power transmission pins are clamped in the end parts of the power transmission butt joint pieces through the restoring force of the at least two support parts, so that even when electric equipment moves and drives the first joint or the second joint, the butt joint between the two power transmission pins are not easy to loose, and the power utilization safety under a moving power utilization scene is ensured. And because the first connector is provided with at least two signal pins, and the second connector is provided with a corresponding number of signal butt-joint pieces, corresponding detection can be realized through the signal pins and the signal butt-joint pieces which are independent of the power transmission pins, and the power utilization safety is further improved. Further, since the protruding height of the grounding pin in the plurality of power transmission pins is larger than that of the electric power pin, and the end positions of the power transmission butt joint part and the end positions of the signal butt joint part are consistent, when the first connector and the second connector are connected, the grounding pin is connected before the electric power pin, and therefore the power utilization safety is further improved.

Drawings

FIG. 1 is a perspective view showing a power connector in use according to a first embodiment of the present invention;

FIG. 2 is a perspective view of a first connector according to a first embodiment of the present invention;

FIG. 3 is an exploded view of a first connector according to a first embodiment of the present invention;

FIG. 4 is a perspective view of a first body according to a first embodiment of the present invention;

FIG. 5 is an orthographic view of a first body in accordance with a first embodiment of the present invention;

FIG. 6 is a perspective view of a locking ring in accordance with a first embodiment of the present invention;

Fig. 7 is a perspective view of a power transmission pin according to a first embodiment of the present invention;

FIG. 8 is a perspective view of a signal pin according to a first embodiment of the invention;

FIG. 9 is a cross-sectional view of a first connector according to a first embodiment of the present invention;

FIG. 10 is a perspective view of a second connector according to a first embodiment of the present invention;

FIG. 11 is a perspective view of a second body according to a first embodiment of the present invention;

fig. 12 is a perspective view of a power transmission dock in accordance with a first embodiment of the present invention;

FIG. 13 is a perspective view of a signal interface element according to one embodiment of the invention;

Fig. 14 is a schematic circuit diagram of a power distribution cabinet according to the first embodiment of the invention;

Fig. 15 is a perspective view showing a state of use of the power connector in the second embodiment of the present invention;

FIG. 16 is an exploded view of a second connector according to a second embodiment of the present invention;

fig. 17 is a perspective view showing a state of use of a power connector in the third embodiment of the present invention;

FIG. 18 is a perspective view of a first connector according to a third embodiment of the present invention;

fig. 19 is a schematic circuit diagram of a mobile distribution box according to a third embodiment of the present invention;

Fig. 20 is a perspective view of a power transmission system in a fifth embodiment of the present invention.

Reference numerals:

A power connector 100; a first joint 10; a first body 11; a first fitting portion 111; cylindrical projections 1111; columnar protrusions 1112; a stripe protrusion 1113; a first mounting portion 112; a power transmission pin mounting hole 112a; a signal pin mounting hole 112b; a lock ring connecting portion 113; triangular notch 113a; a trapezoidal notch 113b; annular groove 113c; a first housing limit portion 114; a first housing connection portion 115; a first housing 12; a locking ring 13; a lock ring body 131; a guide clamping block 132; a triangular clamping block 133; a trapezoidal block 134; a marking assembly 135; a guide block indicator 1351; unlock indicator 1352; unlock direction indicator 1353; a first cable fastener 14; a power transmission needle 15; a transmission needle limit part 151; a power transmission pin fitting portion 152; a power transmission pin insertion portion 153; a support portion 1531; a signal pin 16; a signal pin limit part 161; a signal pin fitting portion 162; a signal pin insertion portion 163; a first seal ring 171; a first gasket 172; a first cable seal 173; a mounting member 19 for an electric box; a second joint 20; a second body 21; a fixing portion 211; a second fitting portion 212; a cylindrical portion 2121; a clip groove 21211; a guide groove section 21211a; turning groove segment 21211b; a clip groove section 21211c; columnar portion 2122; a power transmission dock mounting hole 2122a; crescent-shaped cylindrical portion 2123; signal dock mounting holes 2123a; a third fitting portion 213; a cover connection portion 214; a second housing limit portion 215; a second housing connection 216; a protective cover 22; a power transmission interface 23; a power transmission butt joint piece limiting part 231; a power transmission mating fitting portion 232; a power transmission butt joint part 233; a signal interface 24; a signal butt joint piece limiting part 241; a signal interfacing fitting portion 242; a signal docking member docking portion 243; a second gasket 251; a second cable seal 252; a second housing 26; a second cable fastener 27; a power transmission cable 200; a power distribution cabinet 300; a relay 310; a mobile distribution box 400; a relay 410; power transmission system 1000.

Detailed Description

In order to make the technical means, creation features, achievement of objects and effects of the present invention easy to understand, the power connector and the power transmission system of the present invention are specifically described below with reference to the embodiments and the accompanying drawings.

Example 1

The embodiment provides a power transmission system for carrying out remote power distribution on electric equipment and enabling user equipment to be capable of using electricity in a movable mode.

Fig. 1 is a perspective view of a state of use of a power connector in the present embodiment.

As shown in fig. 1, the power connector 100 of the present embodiment is used for electrically connecting a power distribution cabinet 300 with a power transmission cable 200, that is, the first power transmission and distribution device is the power transmission cable 200, and the second power transmission and distribution device is the power distribution cabinet 300.

The power connector 100 includes a first connector 10 (male plug) and a second connector 20 (female power receptacle). The first connector 10 is installed at one end of the power transmission cable 200, the second connector 20 is installed on the power distribution cabinet 300, and the first connector 10 is plugged with the second connector 20, so that the power transmission cable 200 is electrically connected with the power distribution cabinet 300, electric energy is distributed to the power transmission cable 200 through the power distribution cabinet 300, and then is conveyed to each electric equipment or a movable power distribution box of the next stage through the power transmission cable 200.

Fig. 2 is a perspective view of the first joint in the present embodiment, and fig. 3 is a structural exploded view of the first joint in the present embodiment.

As shown in fig. 2 and 3, the first joint 10 includes a first main body 11, a first housing 12, a lock ring 13 (guide portion), a first cable fastener 14, three power transmission pins 15, two signal pins 16, a first seal ring 171, a first seal gasket 172, and a first cable seal ring 173.

Fig. 4 is a perspective view of the first body in the present embodiment, and fig. 5 is an orthographic view of the first body in the present embodiment.

As shown in fig. 4 and 5, the first body 11 is used for fixing three power transmission pins 15 and two signal pins 16, and the power transmission pins 15 and the signal pins 16 are all penetratingly mounted on the first body 11.

The first body 11 includes a first fitting portion 111, a first mounting portion 112, a lock ring connecting portion 113, a first housing stopper portion 114, and a first housing connecting portion 115, which are coaxially provided.

The first mounting portion 112 is substantially cylindrical, and three power transmission pin mounting holes 112a and two signal pin mounting holes 112b penetrating in the axial direction of the first mounting portion 112 are formed in the first mounting portion 112, and are circular holes. Slightly raised "1", "2" and "3" letters are respectively provided on the end faces of the first mounting portions 112 beside the three power transmission pin mounting holes 112a, and "a" and "B" letters are respectively provided on the end faces of the first mounting portions 112 beside the two signal pin mounting holes 112B.

The first fitting portion 111 includes a cylindrical projection 1111, a columnar projection 1112, and four bar-like projections 1113, which extend from one end face of the first mounting portion 112 and have the same extension length. Wherein the outer diameter of the cylindrical protrusion 1111 substantially coincides with the outer diameter of the first mounting portion 112. The columnar protrusion 1112 is provided in the middle of the inside of the cylindrical protrusion 1111, substantially at the center axis of the cylindrical protrusion 1111. Wherein three of the plurality of protrusions 1113 are connected at one end to the outer circumference of the columnar protrusion 1112 and at the other end to the inner circumference of the columnar protrusion 1111, and the angle between two adjacent protrusions 1113 is approximately 60 degrees. The other bar-like projections 1113 are connected at both ends thereof to the inner circumference of the cylindrical projection 1111, respectively, and the bar-like projections 1113 are relatively close to one end of the cylindrical projection 1111 in the radial direction. Thus, the four bar projections 1113 divide the space inside the cylindrical projection 1111 into three larger portions and one crescent-shaped portion. Three power transmission pin mounting holes 112a are provided at positions corresponding to three large portions, respectively, in a triangular arrangement. Two signal pin mounting holes 112b are provided at positions corresponding to the crescent-shaped portions.

The locking ring connecting portion 113 further extends outwards from the outer periphery of the first mounting portion 112, is shaped, and can be regarded as a two-layer annular portion, wherein the annular portion near the first fitting portion 111 is provided with a triangular notch 113a and two trapezoidal notches 113b, and the two trapezoidal notches 113b are provided at two radial ends of the annular portion. An annular groove 113c communicating with the triangular notch 113a and the trapezoidal notch 113b is also formed between the two annular portions. Therefore, the triangular clamping block 133 and the trapezoidal clamping block 134 on the locking ring 13 are aligned with the triangular notch 113a and the trapezoidal notch 113b on the first main body 11 respectively, the locking ring 13 is sleeved on the first main body 11 in the axial direction until the triangular clamping block 133 and the trapezoidal clamping block 134 respectively pass through the corresponding notches, the locking ring 13 is rotated in the axial direction, so that the triangular notch 113a and the trapezoidal notch 113b respectively move along the annular groove 113c to be staggered with the corresponding notches in the axial direction, and the locking ring 13 is mounted on the first main body 11 and clamped in the axial direction.

The first housing limiting portion 114 is configured to limit the first housing 12, and extends further outward from the outer periphery of the first mounting portion 112 to have an annular plate shape.

The first housing connection portion 115 is for connecting the first housing 12. The first housing connecting portion 115 is cylindrical and has a diameter smaller than the outer diameter of the first housing stopper portion 114, and an external thread is formed on the outer circumferential surface of the first housing connecting portion 115.

The first housing 12 has a substantially long cylindrical shape, and has an internal thread at one end thereof, and is connectable to the first housing connecting portion 115; the other end is relatively small in diameter and has an external thread, and also has a plurality of square column-like projections arranged in an annular manner, each of which extends in a direction coincident with the axial direction of the first housing 12, and is for connection with the first cable fastener 14. In addition, the outer peripheral surface of the first housing 12 has a plurality of strip grooves, and a reinforcing rib structure is formed between two adjacent strip grooves for reinforcing structural strength and increasing friction force during holding.

Fig. 6 is a perspective view of the locking ring in this embodiment.

As shown in fig. 6, the locking ring 13 includes a cylindrical locking ring body 131, a guide clamping block 132, a triangular clamping block 133, two trapezoidal clamping blocks 134, and a marking assembly 135.

The guide clamping block 132 is disposed on the inner side surface of the locking ring body 131 and near one end thereof, the guide clamping block 132 is in a triangular block shape, the surface direction thereof is perpendicular to the radial direction of the locking ring body 131, and one vertex of the triangle faces the one end of the locking ring body 131. When the lock ring 13 is mounted on the first body 11, the apex of the guide click block 132 faces the outside.

The triangular clamping block 133 and the two trapezoidal clamping blocks 134 are also arranged on the inner side surface of the locking ring main body 131 and close to the other end of the same, and are distributed to be matched with the triangular notch 113a and the two trapezoidal notches 113b on the first main body 11. The triangular block 133 has a substantially triangular cross section along the axial direction of the locking ring body 131, and the trapezoidal block 134 has a substantially trapezoidal cross section along the axial direction of the locking ring body 131. Therefore, the locking ring 13 is mounted on the first body 11 by sleeving the locking ring 13 on the first body 11, enabling the triangular clamping block 133 and the two trapezoidal clamping blocks 134 to pass through the triangular notch 113a and the two trapezoidal notches 113b respectively, axially rotating the locking ring 13, and enabling the triangular clamping block 133 and the two trapezoidal clamping blocks 134 to be respectively embedded into annular grooves communicated with the notches.

The index assembly 135 is provided on the outer side of the lock ring body 131 and includes a guide block indicator 1351, an unlock indicator 1352, and an unlock direction indicator 1353.

The guide block indicator 1351 is a triangular protrusion, and its position and orientation correspond to those of the guide engagement block 132 inside the lock ring body 131, respectively, so that the user can clearly determine the position and orientation of the guide engagement block 132 inside the guide block indicator 1351 by observing the position and orientation.

The unlock indicator 1352 is a protrusion in the shape of an open lock, and the unlock direction indicator 1353 beside it is an arrow-shaped protrusion, so that the user can clearly turn the lock ring 13 in which direction the unlock indicator 1352 and the unlock direction indicator 1353 are rotated to unlock them.

The first cable fastener 14 is generally dome-shaped with an internal thread on its inner side for mounting at the other end of the first housing 12. The middle part of the top surface of the first cable fastener 14 is provided with a through cable clamping hole 14a, which can be used for allowing one end of the power transmission cable 200 to penetrate and clamp. Further, the outer side surface of the first cable fastener 14 has a plurality of recesses such that the axial middle portion thereof has a substantially hexagonal cross section, and each recess has a plurality of strip-shaped grooves for facilitating the operation by a human hand and increasing the friction force upon the operation.

The three power transmission pins 15 are fitted and mounted in the three power transmission pin mounting holes 112a of the first body 11, respectively. One of the power pins 15 is used as a ground pin, and the other two are used as power pins.

Fig. 7 is a perspective view of the power transmission pin in the present embodiment.

As shown in fig. 7, the power transmission pin 15 includes a power transmission pin stopper 151, a power transmission pin fitting 152, and a power transmission pin insertion 153, which are coaxially connected in order.

The transmission needle limiting portion 151 has a cylindrical shape, and one end thereof has a groove for connection.

The power transmission pin engaging portion 152 is disposed at the other end of the power transmission pin limiting portion 151, and includes a cylindrical section, a conical table section, a cylindrical section, and a conical table section that are coaxially connected in order. Wherein the diameters of the two cylindrical sections are the same, and the maximum diameter of the conical table section is slightly larger than the diameter of the cylindrical section, so that a step is formed between the adjacent conical table section and the cylindrical section.

The power transmission pin insertion part 153 has a generally cylindrical overall shape, and has four support portions 1531, each support portion 1531 has an extension direction coincident with the axial direction of the power transmission pin 15, the support portion 1531 has a fan-shaped cross section in the extension direction, and an outer end portion of each support portion 1531 has a chamfer. The four support portions 1531 are centrally and symmetrically distributed along the central axis of the power transmission pin 15. A strip-shaped gap is formed between two adjacent support portions 1531, and a cylindrical groove is formed between inner ends of four support portions 1531.

The power transmission pin fitting portions 152 of the power transmission pins 15 are fitted into the corresponding power transmission pin mounting holes 112a and are engaged with each other, the power transmission pin insertion portions 153 are exposed from one end surface of the first body 11, and the power transmission pin stopper portions 151 are exposed from the other end surface of the first body 11 and are abutted against the end surface, that is, the power transmission pins 15 are penetratingly provided in the first body 11.

In this embodiment, the three power transmission pins 15 are uniform in size.

Fig. 8 is a perspective view of the signal needle in this embodiment.

As shown in fig. 8, the signal pin 16 includes a signal pin stopper 161, a signal pin fitting portion 162, and a signal pin insertion portion 163, which are coaxially connected in order.

The signal pin stopper 161 includes a cylindrical section and a semi-cylindrical section, and a connection notch 161a is formed at an outer end of the signal pin stopper 161.

The signal pin engaging portion 162 includes a cylindrical section and a conical land section coaxially connected, the diameter of the cylindrical section being smaller than the diameter of the signal pin limiting portion 161, the maximum diameter of the conical land section being slightly larger than the cylindrical section, thereby forming a step.

The signal pin insertion portion 163 has a cylindrical shape and a chamfer at an outer end portion.

The signal pin fitting portions 162 are fitted into the corresponding signal pin mounting holes 112b and are engaged with each other, the signal pin insertion portions 163 are exposed from one end surface of the first body 11, and the signal pin limiting portions 161 are exposed from the other end surface of the first body 11 and are abutted against the end surface, that is, the signal pins 16 are also penetratingly provided in the first body 11.

In this embodiment, the two signal pins 16 are identical in size, and the overall diameter of the signal pin 16 is much smaller than that of the power transmission pin 15.

Fig. 9 is a sectional view of the first connector in the present embodiment, in which the first body is omitted in order to show the relative positional relationship between the transmission pins and the signal pins, and the position of the end face of the first body is shown in broken lines.

As shown in fig. 9, in the present embodiment, the protruding height of the power transmission pins 15 as ground pins with respect to the end face of the first body 11 is 1.5mm larger than the protruding heights of the other two power transmission pins 15 as power pins. The protruding height of the two signal pins 16 with respect to the end face of the first body 11 is only 3mm, which is much smaller than the three power transmission pins 15. In this way, when the first connector 10 is plugged into the second connector 20, the ground pins will be connected first, and after plugging in place, the two signal pins 16 will be connected.

The power transmission cable 200 has a sheath and a plurality of cores provided inside the sheath, including three power transmission cores and two signal cores, and when one end of the power transmission cable 200 is connected to the first connector 10, the three power transmission cores are respectively embedded in the connecting grooves of the three power transmission pins 15 so as to be connected to the power transmission pins, and the two signal cores are respectively connected to the outer ends of the signal pin limiting portions 161 of the two signal pins 16.

The first sealing ring 171 is annular, and has a circular cross section, and the first sealing ring 171 is sleeved outside the first main body 11 and is used for sealing the joint of the first connector 10 and the second connector 20 when the first connector 10 and the second connector 20 are inserted.

The first gasket 172 is annular and is sleeved on the outer side of the first body 11, one surface of the first gasket contacts the first housing limiting portion 114, and the other surface contacts one end of the first housing 12, so as to seal the first body 11 and the first housing 12.

The first cable gasket 173 is cylindrical, and when one end of the power cable 200 is connected to the first connector 10, the first cable gasket 173 is fitted between the outer peripheral surface of the power cable 200 and the inner side surface of the first housing 12, thereby sealing the space therebetween.

Fig. 10 is a perspective view of the second joint in the present embodiment.

As shown in fig. 10, the second joint 20 includes a second body 21, a protective cover 22, three power transmission docks 23, two signal docks 24, a second gasket 251, and a plurality of fasteners.

Fig. 11 is a perspective view of the second body in the present embodiment.

As shown in fig. 11, the second body 21 includes a fixing portion 211, a second fitting portion 212, a third fitting portion 213, and a cover connecting portion 214.

The fixing portion 211 has a substantially rounded square plate shape, and four corners thereof are respectively provided with mounting holes, and the second body 21 can be fixed to the power distribution cabinet 300 by providing fasteners at the respective mounting holes.

The second fitting portion 212 extends from a central portion of one surface of the fixing portion 211, and its entire outer shape can be regarded as a cylindrical shape. The second fitting portion 212 includes a cylindrical portion 2121, three columnar portions 2122, and a crescent columnar portion 2123.

The cylindrical portion 2121 has a substantially cylindrical shape as a whole, and an edge of an outer end portion thereof is rounded. The outer side surface of the cylindrical portion 2121 has two clamping grooves 21211 respectively provided at both ends in the radial direction of the cylindrical portion 2121 for realizing the clamping between the locking ring 13 and the second main body 21 in cooperation with the guide clamping blocks 132 on the locking ring 13. The engagement groove 21211 has a guide groove section 21211a, a turning groove section 21211b, and an engagement groove section 21211c, which are connected in order.

Wherein the guide groove section 21211a forms an opening at the outer end of the cylindrical portion 2121, the guide groove section 21211a extends substantially in the axial direction of the cylindrical portion 2121, and the width of the guide groove section 21211a gradually narrows from the outer end of the cylindrical portion 2121 to the other end. The opening of the guide groove section 21211a is slightly larger than the side length of the guide catch block 132.

The clamping groove section 21211c extends substantially in the circumferential direction of the cylindrical portion 2121, and the width of the clamping groove section 21211c is substantially uniform along the extending direction thereof, and the width of the clamping groove section 21211c is slightly larger than the axial length of the guide clamping block 132.

The turning groove section 21211b is connected between the guide groove section 21211a and the clamping groove section 21211c such that the extending direction of the clamping groove 21211 turns. A side wall of the guide groove section 21211a is connected to a side wall of the turning groove section 21211b to form a side wall extending from the opening toward the engagement groove section 21211c for guiding the guide engagement block 132 at the time of engagement.

The three columnar portions 2122 and the crescent columnar portion 2123 each have an extending direction coincident with the axial direction of the cylindrical portion 2121. Annular caulking grooves 212a, which are adapted to the cylindrical protrusions 1111, are formed between the outer cambered surfaces of the three cylindrical portions 2122 and the crescent-shaped cylindrical portions 2123 and the inner side surfaces of the cylindrical portions 2121, and three bar-shaped caulking grooves 212b, which are adapted to the three bar-shaped protrusions 1113, and columnar caulking grooves 212c, which are adapted to the columnar protrusions 1112, are formed between the outer side surfaces of the three cylindrical portions 2122, which are opposite to each other.

Each cylindrical portion 2122 has a circular through power transmission dock mounting hole 2122a, and crescent shaped cylindrical portion 2123 has two circular through signal dock mounting holes 2123a.

The third fitting portion 213 extends from the middle of the other surface of the fixing portion 211, and is cylindrical for fitting at a corresponding mounting through hole on the power distribution cabinet 300. The third fitting portion 213 extends longer than the thickness of the distribution box body.

The cover connection portion 214 extends from one end of the fixing portion 211, and is approximately U-shaped, two extending ends of the cover connection portion 214 are provided with a pair of mounting holes, the protective cover 22 is connected to the cover connection portion 214 through a rotating shaft, a torsion spring is sleeved on the rotating shaft, and two ends of the torsion spring are respectively abutted against the inner side of the protective cover 22 and the outer side end face of the second main body 21, so that the protective cover 22 is turned towards the second main body 21. The protective cover 22 can cover at least the outer end portion of the second fitting portion 212, thereby functioning as a shield when the second connector 20 is not in use.

Fig. 12 is a perspective view of the power transmission interface in the present embodiment.

As shown in fig. 12, the power transmission butt joint 23 is for butt joint with the power transmission pin 15, and includes a power transmission butt joint limiting portion 231, a power transmission butt joint fitting portion 232, and a power transmission butt joint portion 233, which are coaxially and sequentially connected.

The power transmission butt joint member limiting portion 231 has a cylindrical shape, and has a connecting groove at an outer end portion thereof.

The power transmission butt fitting portion 232 includes a cylindrical section, a conical stage section, which are coaxially connected in order, and its structure is similar to that of the needle fitting portion 152.

The power transmission butt joint part 233 has a cylindrical shape, and has a butt joint groove 233a into which the power transmission pin insertion part 153 of the power transmission pin 15 is inserted, wherein the groove bottom of the butt joint groove 233a is a conical surface, and the side wall is a cylindrical surface. In the free state (i.e., when the first connector 10 is not inserted into the second connector 20), the outer diameter of the power transmission pin insertion portion 153 is slightly larger than the diameter of the docking slot 233a (i.e., the inner diameter of the power transmission docking piece docking portion 233); when the power transmission pin inserting portion 153 is inserted into the mating groove 233a, the four support portions 1531 are pressed to approach each other, and the power transmission pin inserting portion 153 is tightly supported in the mating groove 233a by the restoring force of the support portions 1531.

The power transmission mating fitting portion 232 is fitted into the corresponding power transmission mating fitting hole 2122a and is clamped, the power transmission mating limiting portion 231 is exposed from and abuts against one end face of the second main body 21, and the power transmission mating fitting portion 233 is adjacent to the other end face of the second main body 21 without exceeding the end face.

Fig. 13 is a perspective view of the signal interface in this embodiment.

As shown in fig. 13, the signal connector 24 is used for connecting the signal pins 16, and includes a signal connector limiting portion 241, a signal connector engaging portion 242, and a signal connector engaging portion 243, which are coaxially connected in sequence.

The signal abutting part limiting part 241 comprises a cylindrical section and a semi-cylindrical section, and a notch is formed at the outer end part.

The signal interfacing fitting portion 242 includes a cylindrical section and a conical stage section coaxially connected, with a step formed therebetween.

The signal butt joint part 243 is generally cylindrical in shape, the outer end of the signal butt joint part 243 has two arcuate plate parts 2431, the extending direction of the arcuate plate parts 2431 is consistent with the axial direction of the signal butt joint part 24, and the cross section of the arcuate plate parts 2431 is semicircular along the extending direction. An elongated cutout 243a is formed between the two arcuate plate portions 2431. In the free state (i.e., when the signal pin 16 is not attached), the inner diameter of the cylinder formed by the two arcuate plate portions 2431 is slightly smaller than the outer diameter of the signal pin insertion portion 163 of the signal pin 16. After the signal pin 16 is inserted, the two arcuate plate portions 2431 are spread apart, and the end portion of the signal pin 16 can be clamped by the restoring force of the arcuate plate portions 2431.

The signal butt fitting portion 242 is fitted into the corresponding butt fitting mounting hole 2123a and is clamped, the signal butt limiting portion 241 is exposed from and abuts against one end face of the second main body 21, and the signal butt fitting portion 243 is close to the other end face of the second main body 21 and does not exceed the end face.

The second gasket 251 has a shape matching the shape of the fixing portion 211, and is in a rounded square sheet shape, and is mounted between the fixing portion 211 and the case of the power distribution cabinet 300 for sealing therebetween.

Fig. 14 is a schematic circuit configuration diagram of the power distribution cabinet in the present embodiment.

As shown in fig. 14, a plurality of relays 310, three power lines, and two signal lines are provided in the power distribution cabinet 300. Three power lines are led out from the power grid and are respectively a live line, a zero line and a ground line. The two signal lines are respectively an anode signal line and a cathode signal line. In this embodiment, 220V, 30A power is supplied through three power lines.

Wherein one power transmission butt joint part 23 of each second connector 20 is connected with the ground wire, and the other two power transmission butt joint parts 23 are respectively connected with the live wire and the zero wire through a relay 310; one signal interface 24 is connected to the positive signal line and the other signal interface 24 is connected to the negative signal line through relay 310. In this embodiment, the two signal lines are connected to a 12V signal power supply independent of the power grid.

In this embodiment, the materials of the first body 11, the first housing 12, the locking ring 13, the first cable fastener 14, the second body 21, and the protective cover 22 are PA66. The materials of the first seal 171, the first gasket 172, the first cable seal 173, and the second gasket 251 are all rubber. The main body parts of the power transmission needle 15, the signal needle 16, the power transmission butt joint piece 24 and the signal butt joint piece 25 are all made of pure copper, and the surfaces of the main body parts are plated with gold.

Based on the material and structure of the power connector 100, the waterproof and dustproof grade is IP68, the withstand voltage grade is 1500V, the bearing current is 30A, the bearing current in a short time is 90A, the insulation resistance is more than or equal to 100MΩ, the contact resistance is less than or equal to 10mΩ, and the temperature rise current at 18 ℃ is 34A.

In use, the protective cover 22 of the second connector 20 is turned up, the guide clamping block 132 on the first connector 10 is aligned with the clamping groove 21211 on the second connector 20 according to the indication of the indication component 135 on the first connector 10, the first connector 10 is inserted towards the second connector 20, the guide clamping block 132 on the first connector 10 is embedded into the clamping groove 21211 on the second connector 20 and moves along the clamping groove 21211 until being embedded into the clamping groove section 21211c, so that the locking ring 13 and the second main body 21 are clamped in the axial direction, at this time, the first embedding part 111 and the second embedding part 212 are embedded, and the three power transmission pins 15 are mutually clamped through the first sealing ring 171, the three power transmission pins 15 are respectively butted with the three power transmission butting pieces 23, the two signal pins 16 are respectively butted with the two signal butting pieces 24, and then electric energy can be transmitted from the power distribution cabinet 300 to electric equipment along the power transmission cable 200.

Specifically, when the other end of the power transmission cable 200 is connected to the electric device, the two signal pins 15 of the first connector 10 are shorted, so that the shorted two signal pins 16, the two signal connectors 24, the corresponding two signal cores, the two signal wires and the corresponding relays in the power transmission cable 200 form a signal loop, the 12V signal is electrically input to the relays, and the relays are connected with the corresponding two power transmission wires (live wire and zero wire) to supply electric energy to the electric device. When the other end of the power cable 200 is not connected with the electric equipment or the second connector 20 is not plugged into the first connector 10, a complete signal loop is not formed, and the corresponding relay keeps the two corresponding power lines in a disconnected state.

After the first connector 10 is pulled out, the protective cover 22 on the second connector 20 is automatically covered under the action of the torsion spring.

Example one action and Effect

According to the power connector and the power transmission system, the power connector comprises the first connector arranged on the first power transmission and distribution device and the second connector arranged on the second power transmission and distribution device, wherein the first connector is provided with a plurality of power transmission pins, the second connector is provided with a corresponding number of power transmission butt joint pieces, and the end parts of the power transmission pins are provided with at least two supporting parts, the diameter of the end parts in a free state is larger than the inner diameter of the end parts of the power transmission butt joint pieces, so that when the power transmission pins are butted with the power transmission butt joint pieces to transmit electric energy, the at least two supporting parts can be mutually embedded in the end parts of the power transmission butt joint pieces in a close manner, and the end parts of the power transmission pins are clamped in the end parts of the power transmission butt joint pieces through the restoring force of the at least two supporting parts, so that even when electric equipment moves and pulls the first connector or the second connector, the butt joint between the two parts are not easy to loose, and the electric safety in a moving electricity utilization scene is guaranteed. Further, since the protruding height of the grounding pin in the plurality of power transmission pins is larger than that of the electric power pin, and the end positions of the power transmission butt joint part and the end positions of the signal butt joint part are consistent, when the first connector and the second connector are connected, the grounding pin is connected before the electric power pin, and therefore the power utilization safety is further improved.

In an embodiment, the outer end of the first connector is further provided with a first embedded part, the first embedded part comprises an annular bulge and a plurality of strip-shaped bulges, the outer end of the second connector is further provided with a second embedded part matched with the second embedded part, the second embedded part comprises an annular embedded groove and a plurality of strip-shaped embedded grooves, so that the first connector and the second connector can be firmly and stably jointed, and further the situation that the butt joint of the first connector and the second connector is loosened when electric equipment moves is further ensured. And moreover, the annular protrusions and the strip-shaped protrusions are used for insulating and separating the plurality of power transmission pins and the signal pins in the first connector, and the second connector is identical, so that the short circuit condition of the power transmission pins, the signal pins and the like can be effectively avoided, and the power utilization safety is further ensured.

In the embodiment, a signal loop is formed by two signal pins, two signal butt-joint parts, two signal wires in the power distribution cabinet, a relay and the like, and the relay is used for connecting corresponding circuits to supply power only when the signal pins are in butt joint with the signal butt-joint parts and the other end of the power transmission cable is connected with electric equipment; and for the circuit which is not connected with the electric equipment and is not connected with the well-butted connector, the electric shock caused by the fact that a user touches the conductive terminals of other circuits by mistake can be effectively avoided while the mobile electricity demand of the equipment is met, and the electricity safety is further improved.

Furthermore, as the protruding height of the two signal pins is far smaller than that of the power transmission pin, and the signal butt joint part and the power transmission butt joint part are at the same axial position, the first connector and the second connector are necessarily butt-jointed in place, and corresponding circuits are electrified, so that the butt joint of the two connectors can be ensured to be in place through the design, and the loosening condition in the use process is further prevented.

In the embodiment, because the inner side of the locking ring of the first connector is provided with the guide clamping block, and the outer side of the end part of the second connector is provided with the clamping groove matched with the guide clamping block, when the user inserts the first connector into the second connector along the axial direction, the guide clamping block and the clamping groove can mutually cooperate to realize self locking, so that the connector is not easy to loose in the use process, and the operation is very convenient and fast.

Further, because the marking component is arranged on the outer side face of the locking ring, a user can align and connect the first connector with the second connector conveniently according to the prompt of the marking component, and can unlock the first connector and the second connector conveniently according to the prompt of the marking component after the use is finished, so that the operation is more convenient. And, combine the structure of first gomphosis portion and second gomphosis portion, also unable joint when first joint and second joint are not aligned, guaranteed that transmission needle and transmission butt joint spare do not have the condition of misjoining, it is safer to use.

In the embodiment, the structure and the material based on the power connector have high withstand voltage level, high short-time bearing current and high insulation resistance, so that the power connector is very safe to use in a construction site, and can ensure normal operation of power transmission and distribution even if the current fluctuates and other problems are caused by the problems of electric equipment. And moreover, the waterproof and dustproof performance of the IP68 level can be realized based on the structure and the materials of the power connector, so that the normal work of the power connector is not influenced even if the construction site is rainy, ponding and the like, and the application range is wider.

< Example two >

The present embodiment provides a power supply connector and a power transmission system, and in the present embodiment, the same reference numerals are given to the same constituent elements as those in the first embodiment, and the corresponding description is omitted.

Fig. 15 is a perspective view of the state of use of the power connector in the present embodiment.

As shown in fig. 15, compared with the first embodiment, the power connector 100' of the present embodiment is different in that two power cables 200 are electrically connected, that is, the first power transmission and distribution device and the second power transmission and distribution device are both power cables 200. In the power connector 100 'of the present embodiment, the structure of the first connector 10 is the same as that of the first embodiment, and the structure of the second connector 20' is different.

Fig. 16 is a structural exploded view of the second joint in the present embodiment.

As shown in fig. 16, the second joint 20' of the present embodiment includes a second main body 21', a second housing 26, a second cable fastener 27, a second gasket 251', and a second cable gasket 252.

The second body 21' includes a second fitting portion 212, a second housing limiting portion 215, and a second housing connecting portion 216, which are coaxially and sequentially connected.

The structure of the second fitting portion 212 is the same as that in the first embodiment.

The second housing limiting portion 215 has a polygonal plate shape, and has a diameter larger than that of the second fitting portion 212.

The structure of the second housing connecting portion 216 is the same as that of the first housing connecting portion 115 in the first embodiment.

The second housing 26, the second cable fastener 27, the second gasket 251', and the second cable grommet 252 are identical in structure and function to the first housing 27, the first cable fastener 14, the first gasket 172, and the first cable grommet 173, respectively.

Similarly, one end of one power transmission cable 200 is inserted into the second housing 26, three power transmission cores thereof are respectively connected to the three power transmission butt joint members 23, and two signal cores thereof are respectively connected to the two signal butt joint members 24.

In use, the two power cables 200 can be electrically connected by plugging the first connector 10 into the second connector 20'. The interengagement of the specific structures on the first connector 10 and the second connector 20' is substantially as described in connection with embodiment one.

In this embodiment, other structures are the same as those in the first embodiment, and thus a description thereof will not be repeated.

By the power connector 100' of the present embodiment, the power cable between the power distribution cabinet 300 and the electric device can be arbitrarily extended, so that the electric power can be reliably supplied to a longer distance.

In addition, the power connector 100' of the present embodiment may also be used in combination with the power connector 100 of the first embodiment.

Example III

The present embodiment provides a power supply connector and a power transmission system, and in the present embodiment, the same reference numerals are given to the same constituent elements as those in the first embodiment, and the corresponding description is omitted.

Fig. 17 is a perspective view of the state of use of the power connector in the present embodiment.

As shown in fig. 17, the difference between the first embodiment and the second embodiment is that the power connector 100″ of the present embodiment is used for connecting the mobile distribution box 400 and the power transmission cable 200, that is, the first power transmission and distribution device is the mobile distribution box 400, and the second power transmission and distribution device is the power transmission cable 200.

In the power connector 100″ of the present embodiment, the structure of the second connector 20 'is the same as that of the second embodiment, and the structure of the first connector 10' is different.

Fig. 18 is a perspective view of the first joint in the present embodiment.

As shown in fig. 18, in contrast to the first connector 10 of the first embodiment, the first connector 10' of the present embodiment does not have the first cable fastener 14 and the first cable seal 173, but has the electric box mount 19, which is a hexagonal nut, that can be fitted over the end of the first housing 12, thereby fixing the first connector 10 to the portable electric box 400.

Fig. 19 is a schematic circuit diagram of the mobile distribution box in the present embodiment.

As shown in fig. 19, the mobile distribution box 400 is provided with a plurality of relays 410, a power input head 420, three power lines, and two signal lines. Wherein, three power transmission lines are respectively connected with three power transmission pins 15 of the first connector 10', so that electric energy can be supplied to the mobile distribution box 400 through the power transmission cable 200 and the power connector 100″, and a plurality of electric devices can be respectively connected to the mobile distribution box 400.

In this embodiment, other structures are the same as those in the first embodiment, and thus a description thereof will not be repeated.

By the power connector 100″ of the present embodiment, the power cable 200 can be reliably connected to the mobile distribution box 400, so that the power transmission system can be suitable for a situation that a plurality of electric devices need remote power distribution and mobile power utilization.

In addition, the power connector 100 of the present embodiment may also be used in combination with the power connector of the first and/or second embodiments.

Example IV

The present embodiment provides a power supply connector and a power transmission system, and in the present embodiment, the same reference numerals are given to the same constituent elements as those of the three phases of the embodiment, and the corresponding descriptions are omitted.

As shown in fig. 18, the difference is that the power connector 100' "of the present embodiment is used for connecting the power cable 200 and the mobile distribution box 400, i.e., the first distribution device is the power cable 200 and the second distribution device is the mobile distribution box 400, compared with the first embodiment.

The power connector 100' "of the present embodiment includes a first connector 10 and a second connector 20, and has the same structure as the first connector 10 and the second connector 20 in the first embodiment, respectively, except that the second connector 20 is mounted on the mobile distribution box 400.

As shown in fig. 19, the three-wire power transmission line, the two signal lines, and the relay 410 and the second connector 20 in the mobile distribution box 400 are also connected in the same manner as in the first embodiment.

In this embodiment, other structures are the same as those in the first embodiment, and thus a description thereof will not be repeated.

By the power connector 100' "of the present embodiment, electric power can be more reliably transmitted from the portable power distribution box 400 to the plurality of electric consumers.

In addition, the power connector 100' "of the present embodiment may also be used in combination with the power connectors of the first to third embodiments.

< Example five >

The embodiment provides a power transmission system.

Fig. 20 is a perspective view of the power transmission system in the present embodiment.

As shown in fig. 20, the power transmission system 1000 includes a power distribution cabinet 300, a plurality of power transmission cables 200, a mobile power distribution box 400, a power distribution cabinet power connector 101, a cable power connector 102, a power distribution box input power connector 103, and a power distribution box output power connector 104 (only a female power outlet, i.e., a second connector 20, is shown).

The power connector 101 of the power distribution cabinet is the power connector 100 of the first embodiment.

The cable power connector 102 is the power connector 100' of the second embodiment.

The distribution box input power connector 103 is the power connector 100 "of the third embodiment.

The distribution box output power connector 104 is also referred to as the power connector 100' "of the fourth embodiment.

In fig. 20, one power cable 200 is connected between the power distribution cabinet 300 and the mobile power distribution cabinet 400, and actually, a plurality of power cables 200 may be connected between the two power cables 200 as required, and the two power cables 200 are connected through the cable power connector 102.

The power distribution cabinet 300 may also be connected to a plurality of mobile power distribution boxes 400 through a plurality of power transmission cables 200, respectively.

The box output power connector 104 at the mobile box 400 may be directly connected to a cable of the electrical device, or may further be connected to one or more power cables 200, and then connected to the electrical device.

The mobile electrical boxes 400 may also be reconnected to one or more mobile electrical boxes 400 via the power cable 200.

According to the power transmission system 1000 of the present embodiment, electric energy can be supplied to any distance from the power distribution cabinet 300, and can be reliably distributed to a plurality of electric devices requiring mobile electricity, and the structure of the power transmission system 1000 can be flexibly adjusted as required, so that the application range is very wide.

The above examples are only for illustrating the specific embodiments of the present invention, and the present invention is not limited to the description of the above examples, it should be understood by those skilled in the art that the present invention is not limited by the above examples, the above examples and the description are merely illustrative of the principles of the present invention, and various changes and modifications can be made therein without departing from the spirit and scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (10)

1. A power connector for electrically connecting a first power transmission and distribution device to a second power transmission and distribution device, comprising:

A first connector arranged on the first power transmission and distribution device; and

A second connector arranged on the second power transmission and distribution device,

Wherein the first joint comprises a first main body with a first jogged part, a plurality of transmission pins and at least two signal pins which are arranged on the first main body in a penetrating way,

The second connector comprises a second main body with a second jogged part, a plurality of transmission butt joint pieces and at least two signal butt joint pieces which are arranged on the second main body in a penetrating way,

The second jogging part is used for jogging the outer end part of the first main body and the outer end part of the second main body by being matched with the first jogging part,

The end of the transmission needle is columnar in shape, the end is provided with at least two supporting parts, a gap is arranged between the at least two supporting parts,

The end part of the power transmission butt joint part is tubular,

In a free state, the diameter of the end of the power transmission needle is larger than the inner diameter of the end of the power transmission butt joint part,

The plurality of power transmission pins comprise a grounding pin and two electric power pins,

The protruding height of the grounding pin is larger than that of the electric power pin relative to the first main body, the protruding height of the signal pin is smaller than that of the electric power pin,

Along the axial direction of the second main body, the end positions of all the power transmission butt joint parts and all the signal butt joint parts are consistent.

2. The power connector of claim 1, wherein:

The protruding height of the signal pin is 2-5 mm relative to the end face of the first main body, and the protruding height of the grounding pin is 1-3 mm greater than the protruding height of the electric energy pin.

3. The power connector of claim 1, wherein:

Wherein the number of the signal pins and the number of the signal butt-joint parts are two, the signal pins and the signal butt-joint parts are used for being matched with two signal wires to form a closed signal loop for detection,

The signal electricity is a 5V-24V electric signal independent of the power supply.

4. The power connector of claim 1, wherein:

wherein the first jogged part comprises a cylindrical bulge and a plurality of strip-shaped bulges connected to the inner side of the cylindrical bulge,

The second jogged part comprises annular grooves matched with the cylindrical bulges and strip-shaped grooves respectively matched with the strip-shaped bulges,

The power transmission needle and the signal needle are respectively arranged between the cylindrical bulge and the strip-shaped bulge,

The power transmission butt joint piece and the signal butt joint piece are respectively arranged between the annular groove and the strip-shaped groove.

5. The power connector of claim 4, wherein:

Wherein, at least one clamping groove is arranged on the outer peripheral surface of the second jogged part,

The outer end part of the first main body is also provided with a cylindrical guide part which is arranged on the periphery of the first embedded part, and the inner side of the guide part is provided with at least one guide clamping block which is used for being matched with the at least one clamping groove to clamp the first main body and the second main body.

6. The power connector of claim 5, wherein:

wherein the guide clamping block is triangular block-shaped, one vertex of the guide clamping block is close to the outer edge of the guide part,

The clamping groove is provided with a guiding groove section, a turning groove section and a clamping groove section which are connected in sequence,

The guide groove section is provided with an opening for allowing the guide clamping block to enter and a guide side wall for enabling the guide clamping block to move towards the clamping section,

The side wall of the clamping groove section is used for being abutted with the edge of the guide clamping block.

7. The power connector of claim 1, wherein:

wherein the first power transmission and distribution device and the second power transmission and distribution device are both power transmission cables,

The first joint further includes:

A first housing in which one end of the power transmission cable is inserted;

the first cable sealing piece is arranged between the first shell and the power transmission cable and is used for sealing the first shell and the power transmission cable; and

A first cable fastener arranged at one end of the first housing for fixing one end of the power transmission cable,

The second joint further includes:

A second housing in which one end of the power transmission cable is inserted;

the second cable sealing piece is arranged between the second shell and the power transmission cable and is used for sealing the second shell and the power transmission cable; and

And the second cable fastener is arranged at one end of the second shell and is used for fixing one end of the power transmission cable.

8. The power connector of claim 1, wherein:

wherein the first power transmission and distribution device is a distribution box and is provided with a live wire, a zero wire, a ground wire, two signal wires and a relay, the relay is provided with two signal ends,

The first connector is arranged on the distribution box,

The three power transmission pins comprise a grounding pin and two electric power pins,

The grounding pin is connected with the ground wire, the two electric energy pins are respectively connected with the live wire and the null wire through the relay,

The signal pins are two, one signal pin is connected with one signal wire, the other signal pin is connected with one signal end of the relay, and the other signal end of the relay is connected with the other signal wire.

9. The power connector of claim 1, wherein:

Wherein the second power transmission and distribution device is a distribution box and is provided with a live wire, a zero wire, a ground wire, two signal wires and a relay, the relay is provided with two signal ends,

The second connector is arranged on the distribution box,

The second joint further includes:

The second main body is arranged on the base body in a penetrating manner;

The protective cover is rotatably arranged on the seat body; and

The elastic piece is used for driving the protective cover to be pressed towards the seat body,

When the protective cover is pressed on the seat body, the protective cover completely covers one end of the second main body,

The three power transmission butt-joint pieces comprise a grounding butt-joint piece and two electric power butt-joint pieces,

The grounding butt joint part is connected with the ground wire, the two electric energy butt joint parts are respectively connected with the live wire and the zero wire through the relay,

The signal butt joint parts are two, one signal butt joint part is connected with one signal wire, the other signal butt joint part is connected with one signal end of the relay, and the other signal end of the relay is connected with the other signal wire.

10. A power transmission system, comprising:

at least two power transmission and distribution devices; and

At least one power connector for electrically connecting the two power transmission and distribution devices,

Wherein the power connector is the power connector of any one of claims 1-9.