CN103840418B - Three-phase four-wire system service conductor fixture on low-voltage circuit bar - Google Patents

Abstract

The invention relates to a three-phase four-wire system household line device on a low-voltage line pole, which includes an arc-shaped insulating panel matching the low-voltage line pole, and a conductive phase A and a conductive phase A are vertically arranged on the left side of the insulating panel. B-phase terminal, the right side of the insulating panel is vertically provided with conductive C-phase and 0-phase terminal, and several terminal slots are arranged on the side walls of the four terminal along its vertical direction, so that The wiring slots of the A-phase and B-phase binding posts are all facing left, the wiring slots of the C-phase and 0-phase binding posts are all facing right, and the topmost wiring slots of the binding posts are respectively connected to the main incoming line. The rest of the terminal slots of the terminal are respectively connected to the outgoing lines. The present invention mainly changes the layout of multiple low-voltage sub-lines on the original low-voltage line to the arrangement of "three-phase household line device" on the low-voltage line pole, so that the line layout is beautiful and generous, the force is balanced, and the line insulation is not damaged. , and save costs, making the power connection and power supply on the pole safe and reliable.

Description

Three-phase four-wire household line device on low-voltage line pole

technical field

The invention relates to a three-phase four-wire household wire device on a low-voltage line pole.

Background technique

Existing low-voltage household line lines, because low-voltage users continue to apply for meter installation by household, when the system power enters the customer's electric energy meter, when the customer's incoming line is introduced due to the restrictions of the environment and surrounding conditions, it can only be continuously connected from the low-voltage line. In this way, the original intact low-voltage line insulation and line tension are greatly damaged, often resulting in accidents such as power outages and burning of household appliances caused by poor contact of live wires or neutral wires. At the same time, low-voltage lines form a cobweb-like layout due to multiple customer access lines, which affects the appearance, destroys people's vision, and affects the normal maintenance and repair work of the line. In order to prevent such accidents and change the technical defects of the original low-voltage line access line. Specially invented the single-phase household wire device on the low-voltage line pole, so as to meet the safety technical requirements of the household wires when multiple low-voltage customers use electricity and the appearance of the customer's household wires.

Contents of the invention

The present invention makes improvements to the problems existing in the above-mentioned prior art, that is, the technical problem to be solved by the present invention is to provide a three-phase four-wire household line device on a low-voltage line pole, which connects multiple branching joints on the low-voltage line Instead, the way of uneven force on the line is changed to the way of centralized installation and balanced force on the low-voltage line pole; the layout of the spider web and uneven force on the low-voltage line is changed to the safety of the household line on the low-voltage line pole. The arrangement layout with high reliability and balanced stress, this device can not only be used to connect three-phase four-wire circuits, but also can be used to connect single-phase circuits.

In order to solve the above-mentioned technical problems, the technical solution of the present invention is: a three-phase four-wire household line device on a low-voltage line pole, including an arc-shaped insulating panel that matches the low-voltage line pole, and the left side of the insulating panel is The conductive A-phase connecting post and the B-phase connecting post are vertically arranged on the side, and the conductive C-phase connecting post and the 0-phase connecting post are vertically arranged on the right side of the insulating panel. The side walls of the four connecting posts There are several wiring grooves along its vertical direction, the wiring grooves of the A-phase connecting post and the B-phase connecting post all face to the left, and the connecting grooves of the A-phase connecting post and the B-phase connecting post are along the vertical direction. The directions are staggered from each other, the connecting slots of the C-phase connecting post and the 0-phase connecting post are all facing to the right, the connecting slots of the C-phase connecting post and the 0-phase connecting post are arranged vertically staggered, and the A-phase The connecting post, B-phase connecting post, C-phase connecting post and the junction groove at the top of the 0-phase connecting post are respectively connected to the A-phase main incoming line, B-phase main incoming line, C-phase main incoming line and 0-phase main incoming line. Phase A connecting post, B-phase connecting post, C-phase connecting post, and phase 0 connecting post are connected to the remaining wiring slots of phase A, phase B, phase C, and phase 0 respectively. There are heat dissipation slots between the columns for heat dissipation and cooling.

Further, the wiring groove is inclined to the vertical direction and set downward.

Further, the wiring entrances of the wiring slots are all provided with snap buckles for fastening the power cords.

Further, the wiring grooves are all provided with insulating flip covers covering the wiring grooves.

Further, screw holes and bolts for fixing the power cord in the slot are provided in the wiring slot.

Further, the junction slot of the 0-phase terminal for connecting the branch line is larger than the junction slot of the A-phase connection post, the B-phase terminal and the C-phase connection post, and the 0-phase terminal is used for connecting the junction slot of the branch line There are screw holes and bolts for fixing multiple power lines in the groove respectively.

Further, the outer surfaces of the A-phase connecting post, the B-phase connecting post, the C-phase connecting post and the O-phase connecting post are all coated with an insulating layer.

Further, the top of the insulating panel is provided with a rain cover covering the A-phase connecting post, the B-phase connecting post, the C-phase connecting post and the 0-phase connecting post.

Further, channels are provided on both sides of the upper and lower ends of the insulating panel, and hoop devices for fixing the insulating panel on the low-voltage line poles are provided at both upper and lower ends of the insulating panel, and the hoop devices include connecting strips, hoops One end of the connecting strip is connected to the locking device, the other end passes through the channel on one side of the insulating panel, the other end of the connecting strip is provided with a protrusion larger than the channel, and the strap The upper side wall of the rack is provided with a rack, the teeth of the rack are one-way teeth, the locker is provided with a gear with one-way teeth, and the locker is provided with a belt under the gear to let the belt pass through. In the aisle, the side wall of the locking device facing away from the low-voltage line pole is provided with a lock hole and a key matching the lock hole. The key turns the lock hole to drive the gear to rotate, so that the hoop device can be tightened or loosened. .

Compared with the prior art, the present invention has the following beneficial effects: the present invention changes the way that multiple taps on the existing low-voltage line lead to uneven force on the line and poor contact of the power supply of multiple tap users into a low-voltage line pole The centralized installation and force-balanced wiring method change the layout of the spider web to the arrangement on the pole. This device can not only be used to connect three-phase four-wire circuits, but also can be used to connect single-phase circuits; Balanced force, good power contact, convenient power connection, elegant appearance, cost saving, safe and reliable power supply and so on.

The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

Description of drawings

Fig. 1 is a schematic diagram of the structure of an embodiment of the present invention.

Fig. 2 is a schematic diagram of the structure of the A-phase terminal in the embodiment of the present invention.

Fig. 3 is a schematic diagram of the structure of the cable buckle in the embodiment of the present invention.

Fig. 4 is a schematic diagram of the structure of an insulating flip cover in an embodiment of the present invention.

Fig. 5 is a schematic structural view of the hoop device in the embodiment of the present invention.

In the figure: 1-insulation panel, 101-rain cover, 102-channel, 2-phase A connection post, 21-junction groove, 22-threaded hole, 3-B phase connection post, 4-C phase connection post, 5 -0-phase terminal, 6-cable buckle, 7-insulation cover, 8-clamp device, 81-connecting bar, 82-band, 83-locker, 84-key, 85-convex part, 86- Rack, 87-lock hole, 9-A phase main incoming line, 901-A phase separate outgoing line, 10-B phase main incoming line, 1001-B phase separate outgoing line, 11-C phase main incoming line, 1111-C phase Separate outgoing line, 12-0 phase main incoming line, 1201-0 phase separate outgoing line, 13-cooling slot.

detailed description

Embodiment 1: As shown in Figures 1 to 4, a three-phase four-wire household line device on a low-voltage line pole includes an arc-shaped insulating panel 1 that matches the low-voltage line pole, and the insulating panel 1 The left side is vertically provided with a conductive phase A connection post 2 and the B phase connection post 3, and the right side of the insulating panel 1 is vertically provided with a conductive C phase connection post 4 and a 0-phase connection post 5. A plurality of connection grooves 21 are arranged on the side wall of the column along its vertical direction, and the connection grooves 21 of the A-phase connecting column 2 and the B-phase connecting column 3 are all directed to the left, and the A-phase connecting column 2 and the B-phase connecting column 3 The connection slots of the B-phase terminal 3 are arranged vertically staggered from each other, the connection slots of the C-phase connection post 4 and the 0-phase terminal 5 are all directed to the right, and the C-phase connection post 4 and the 0-phase terminal 5 The junction slots of the phase A and phase B connecting posts 3, C phase connecting posts 4 and 0 phase connecting posts 5 are arranged in a staggered manner along the vertical direction. B-phase main incoming line 10, C-phase main incoming line 11 and 0-phase main incoming line 12, the other connecting slots of the A-phase connecting post 2, B-phase connecting post 3, C-phase connecting post 4 and 0-phase connecting post 5 Connect the A-phase outgoing line 901, the B-phase outgoing line 1001, the C-phase outgoing line 1111 and the 0-phase outgoing line 1201 respectively, and there are heat dissipation slots 13 for heat dissipation and cooling between the adjacent terminals.

In this embodiment, in order to prevent rainwater from accumulating in the junction groove, the junction groove 21 is inclined from the vertical direction and arranged downward, so that rainwater cannot flow into or remain in the junction groove.

In this embodiment, the arrangement of the power cords is made compact to avoid loosening of the cords, and the wiring entrances of the junction slots 21 are all provided with clip buckles 6 for fastening the power cords.

In this embodiment, in order to prevent rainwater or sundries from entering the wiring slot, the wiring slot 21 is provided with an insulating cover 7 covering the wiring slot.

In this embodiment, in order to quickly install the wiring in the wiring slot, the wiring slot 21 is provided with bolt holes 22 and bolts for fixing the wiring in the slot.

In this embodiment, in order to make the device not only be used for connecting three-phase four-wire circuits, but also be used for connecting single-phase circuits, the terminal slot of the phase 0 terminal 5 for connecting the outgoing line is larger than that of the phase A terminal 2, The wiring groove of the B-phase terminal 3 and the C-phase connecting column 4, the 0-phase terminal 5 is used to connect the wiring groove of the branch line to be provided with screw holes and bolts for fixing a plurality of power lines in the groove respectively. , the device can directly combine phase A, phase B, phase C and phase 0 to form a three-phase four-wire circuit, and can also directly combine phase A and phase 0, phase B and phase 0, and phase C and phase 0. For connection to single-phase circuits.

In this embodiment, in order to avoid electric shock, the outer surfaces of the A-phase connecting post 2 , the B-phase connecting post 3 , the C-phase connecting post 4 and the O-phase connecting post 5 are all coated with an insulating layer.

In this embodiment, the top of the insulating panel 1 is provided with a rain shield 101 covering the A-phase connecting post 2 , the B-phase connecting post 3 , the C-phase connecting post 4 and the 0-phase connecting post 5 .

In this embodiment, as shown in Figure 5, in order to quickly and conveniently install the device on the low-voltage line pole, channels 102 are provided on both sides of the upper and lower ends of the insulating panel 1, and the upper and lower ends of the insulating panel 1 are provided with There is a hoop device 8 for fixing the insulating panel on the low-voltage line pole. The hoop device includes a connecting strip 81, a hoop 82 and a locker 83. One end of the connecting strip 81 is connected to the locker 83. The other end passes through the channel 13 on one side of the insulating panel, the other end of the connecting strip 81 is provided with a convex portion 85 larger than the channel, and the upper side wall of the band 82 is provided with a rack 86, the rack 86 The teeth are one-way teeth, and the locker 83 is provided with a gear with one-way teeth. The locker 83 is provided with an aisle for the band 82 to pass under the gear, and the locker 83 faces away from the The side wall of the low-voltage line pole is provided with a lock hole 87 and a key 84 matching the lock hole. The key 84 turns the lock hole to drive the gear to rotate, so that the hoop device is tightly held or loosened. When in use, the key 84 Rotate the gear, and the gear drives the hoop 82 to move in the inner channel of the locker, so that the device of the present invention is fixed on or unloaded on the low-voltage line pole.

When using this device, fix the device on the low-voltage line pole with a hoop device, lock the hoop device with a key, cut off the power supply, connect each line, cover the insulating cover, and power on.

The above descriptions are only preferred embodiments of the present invention, and all equivalent changes and modifications made according to the scope of the patent application of the present invention shall fall within the scope of the present invention.

Claims (9)

1. A three-phase four-wire system household line device on a low-voltage line pole, characterized in that: it includes an arc-shaped insulating panel matched with the low-voltage line pole, and the left side of the insulating panel is vertically provided with a conductive A-phase connecting post and B-phase connecting post, the right side of the insulating panel is vertically provided with a conductive C-phase connecting post and a 0-phase connecting post, and the side walls of the four connecting posts are arranged along their vertical directions. There are several wiring grooves, the wiring grooves of the A-phase connecting post and the B-phase connecting post both face to the left, and the connecting grooves of the A-phase connecting post and the B-phase connecting post are arranged vertically staggered from each other. The connecting slots of the C-phase connecting post and the 0-phase connecting post all face to the right, the connecting slots of the C-phase connecting post and the 0-phase connecting post are vertically staggered, and the A-phase connecting post and the B-phase connecting post , Phase C connecting post and the junction groove at the top of the phase 0 connecting post are respectively connected to the main incoming line of phase A, the main incoming line of phase B, the main incoming line of phase C and the main incoming line of phase 0, the connecting post of phase A, the main incoming line of phase B The other terminal slots of the terminal, C-phase connecting column and 0-phase terminal are respectively connected to the A-phase outgoing line, B-phase outgoing line, C-phase outgoing line and 0-phase outgoing line. Cooling heat sink. 2. The three-phase four-wire system household wire installation device on a low-voltage line pole according to claim 1, characterized in that: the wiring groove is inclined to the vertical direction and arranged downward. 3. The three-phase four-wire system household line device on the low-voltage line pole according to claim 1, characterized in that: the wiring entrances of the junction slots are all provided with clamping buckles for fastening the power lines. 4. The three-phase four-wire system household wire installation device on a low-voltage line pole according to claim 1, characterized in that: the wiring grooves are all provided with insulating flip covers covering the wiring grooves. 5. The three-phase four-wire system household wire installer on a low-voltage line pole according to claim 1, characterized in that: the wiring groove is provided with screw holes and bolts for fixing the power wire in the groove. 6. The three-phase four-wire system household line device on the low-voltage line pole according to claim 1, characterized in that: the A-phase connecting post, the B-phase connecting post, the C-phase connecting post and the 0-phase connecting post The outer surfaces are all coated with an insulating layer. 7. The device for three-phase four-wire household line on a low-voltage line pole according to claim 1, characterized in that: the terminal slot of the phase 0 terminal for connecting the outgoing line is larger than that of the phase A connection column and the phase B terminal. The junction slot of the terminal and the C-phase connection post, the junction slot of the 0-phase terminal for connecting the branch line is provided with screw holes and bolts for fixing a plurality of power lines in the slot respectively. 8. The three-phase four-wire system household wire device on the low-voltage line pole according to claim 1, characterized in that: the top of the insulating panel is provided with a connecting post for phase A, a connecting post for phase B, and a connecting post for phase C and a rain cover that covers the phase 0 terminal. 9. The three-phase four-wire system household wire device on the low-voltage line pole according to claim 1, characterized in that: the upper and lower ends of the insulating panel are provided with channels, and the upper and lower ends of the insulating panel are provided with There is a hoop device for fixing the insulating panel on the low-voltage line pole. The hoop device includes a connecting strip, a hoop and a locker. One end of the connecting strip is connected to the locker, and the other end passes through the insulating panel. One side channel, the other end of the connecting bar is provided with a protrusion larger than the channel, the upper side wall of the band is provided with a rack, the teeth of the rack are unidirectional teeth, and the locking device A gear with one-way teeth is arranged on the upper part of the locker, and a channel for the belt to pass is arranged under the gear in the locker. The gear and the belt rack form a ratchet mechanism, and the locker faces away from the low-voltage line pole. The side wall is provided with a lock hole and a key matched with the lock hole, and the key turns the lock hole to drive the gear to rotate, so that the hoop device is tightened or loosened.