An incoming line connection device for an electric energy metering box

Abstract

The present invention relates to the technical field of equipment for measuring electric variables, and specifically discloses an incoming line connection device for an electric energy meter box, including an electric box, a wiring device, an incoming line terminal, an electric energy metering module and an output line, wherein the incoming line terminal and the electric energy metering module are electrically connected to the wiring device through a wire, and the electric energy metering module and the output line are electrically connected through the wiring device, and the wiring device includes an electric connection rail and a lead box installed at the port of the electric connection rail, and the lead box is installed with a junction box at both ends of the top and bottom. The present invention optimizes the wiring device, and sets a plurality of junction boxes at three incoming line terminals for line branching operations. The wires are pressed against the side wall of the central power connection block by the relatively set wire pressing seat 1 and wire pressing seat 2 to complete the incoming line wiring action. When the wire pressing seat 1 and wire pressing seat 2 are synchronously close to the power connection block, the wires will be gathered together to ensure the integrity of the wire ends, and at the same time, the wire ends will be clamped and bent to improve the firmness of the wiring.

Description

Technical Field

[0001] The invention belongs to the technical field of equipment for measuring electric variables, and in particular relates to an incoming line connection device for an electric energy metering box. Background Art

[0002] The three-phase watt-hour meter is used to measure the electric energy output by the power supply in the three-phase AC circuit. It is widely used in the equipment for measuring electrical variables. Structurally, the three-phase watt-hour meter adopts multiple sets of driving components and multiple aluminum disks fixed on the rotating shaft to realize the measurement of three-phase electric energy.

[0003] In the Chinese patent with publication number CN117424019A, a three-phase four-wire direct electric energy meter with double-layer stepped wiring terminals is mentioned. The power inlet hole and the power inlet hole of the external collection device are connected inside the meter. When installing the meter and connecting the power, the possibility of strong sparks or arcs causing injuries to workers due to short circuits and the possibility of the electric energy meter being burned due to copper and aluminum oxidation is reduced;

[0004] However, in actual use, if a conductor with multiple copper wires is used, after stripping off the outer insulating protective layer, the exposed copper wire is inserted into the wire entry hole and screwed and squeezed with bolts to make an electrical connection. However, in the process of rotating the bolts to gradually tighten the wires, the copper wires are squeezed and dispersed to both sides by the bolts. After tightening, the ends of the wires are flat and loose, and the contact area with the terminals is small. Installing copper terminals on the ends of the wires and then wiring them on site requires a high level of professionalism for the operators and is time-consuming and labor-intensive. Summary of the invention

[0005] The purpose of the present invention is to provide an incoming line connection device for an electric energy meter box to solve the problems existing in the prior art.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] An incoming line connection device for an electric energy meter box, comprising an electric box, a wiring device, an incoming line terminal, an electric energy metering module and an output line, wherein the incoming line terminal and the electric energy metering module are electrically connected to the wiring device through a wire, and the electric energy metering module and the output line are electrically connected through the wiring device, wherein the wiring device comprises an electric connection rail and a lead box installed at a port of the electric connection rail, and the lead box is installed at both ends of the top and bottom of the lead box;

[0008] The lead box comprises a vertically arranged middle plate, the middle plate is arranged perpendicular to the power connection rail, a pressure rod is installed through the middle of the middle plate, and the pressure rod is slidably pressed with the power connection rail;

[0009] The junction box includes a junction shell, a power connection block is arranged at the opening of the junction shell, and a wire crimping seat 1 and a wire crimping seat 2 are arranged on both sides of the power connection block, a clamping drive is arranged between the wire crimping seat 1 and the wire crimping seat 2, and the wire crimping seat 1 and the wire crimping seat 2 can gather and bend the ends of the wires when they are close to the power connection block.

[0010] Preferably: the clamping drive component includes a wedge block, one end of the wire pressing seat is screwed with an oblique end face bolt through a threaded hole, the second end of the wire pressing seat is installed with an oblique end face support on one side corresponding to the oblique end face bolt, the wedge block is movably arranged between the oblique end face bolt and the oblique end face support, and a limiting groove for the wedge block is opened on the inner side of the wiring shell.

[0011] Preferably, the first and second wire crimping seats are provided with a semi-circular arc groove 1 on one side of the connecting block, and the side wall of the connecting block is provided with a semi-circular arc groove 2 at a location corresponding to the semi-circular arc groove.

[0012] Preferably: the power connection block is provided with a lug at one end inside the wiring shell, the first and second crimping seats are located at one end inside the wiring shell and are bent toward the lug, and a through hole is provided in the middle of the lug.

[0013] Preferably, three power connection rails are provided and arranged horizontally with each other, the power connection rails include conductive bars, a shell is sleeved and installed on the outer side of the conductive bars, and a port is opened on a side of the shell corresponding to the lead box.

[0014] Preferably, a buckle frame is installed at one end of the lead box close to the power rail, and the buckle frame is horizontally slidably engaged with the lead box.

[0015] Preferably: the power connection block located above the middle plate is electrically connected to the middle plate, a lead shell is sleeved and installed on the outer side of the middle plate, a conductive head is provided at one end of the pressure rod corresponding to the power connection rail, and the conductive head and the pressure rod are insulated.

[0016] Preferably, the housing is provided with a sliding cavity perpendicular to the pressure rod at the port, a baffle is slidably installed in the sliding cavity, and a spring holder is installed between the baffle and the inner wall of the sliding cavity.

[0017] Preferably: a connection seat is installed at the end of the power connection rail, the connection seats are arranged side by side on the left and right, and a leakage protection switch is provided between the connection seat and the incoming line terminal.

[0018] Preferably, the electric energy metering module comprises a three-phase watt-hour meter, which is electrically connected to a lead box via a distribution line, and is connected to an output line via a junction box via a lead line, and an air switch is arranged in series on the lead line.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. The present invention optimizes the wiring device, and sets a plurality of junction boxes at the three incoming wire ends for branching operations. The wires are pressed against the side wall of the central power connection block by the relatively arranged wire pressing seats 1 and 2, and the incoming wire connection action is completed quickly. When the wire pressing seats 1 and 2 are synchronously close to the power connection block, the wires are gathered together to ensure the integrity of the wire ends and avoid excessive resistance at the wiring position. At the same time, the wire ends are shaped to make the wires bend and tighten at the end angle position of the power connection block, thereby improving the firmness of the wiring.

[0021] 2. The present invention connects three parallel power connection rails at the incoming line end through the setting of wiring rails. Multiple lead boxes can be flexibly connected on the rails for parallel branching, so as to flexibly supply power to multiple electrical equipment at the same time. The power connection rails use baffles to cover the conductive strips as a whole. When the lead box is connected to the power connection rails, the baffles will be pushed open synchronously to expose the conductive strips, and then the exposed position of the conductive strips will be covered by the lead box. During the connection process between the lead box and the incoming line end, the connection position is always covered to ensure the safety of the connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A perspective view of the present invention;

[0023] Figure 2 It is a front view of the present invention;

[0024] Figure 3 It is a schematic diagram of the positions of the incoming line terminal, the wiring device, the three-phase watt-hour meter and the air switch of the present invention;

[0025] Figure 4 It is a schematic diagram of the assembly between the power rail, the lead box and the junction box in the wiring device of the present invention;

[0026] Figure 5 It is a cross-sectional schematic diagram of the power connection rail, the lead box and the junction box of the present invention;

[0027] Figure 6 It is a partial enlarged schematic diagram between the power connection rail and the lead box of the present invention;

[0028] Figure 7 It is a schematic diagram of the separation between the lead box and the junction box of the present invention;

[0029] Figure 8 The action state of the lead box and the junction box of the present invention when working Figure 1 ;

[0030] Fig. 9 The action state of the lead box and the junction box of the present invention when working Figure 2 ;

[0031] Fig.10 The action state of the lead box and the junction box of the present invention when working Figure 3 .

[0032] In the figure: 1. Wiring device; 11. Wire connection seat; 12. Lead box; 121. Lead shell; 122. Middle plate; 123. Pressure rod; 13. Junction box; 131. Junction shell; 132. Wire pressing seat 1; 133. Wire pressing seat 2; 134. Power connection block; 135. Oblique end bolt; 136. Limiting groove; 137. Support ear; 138. Wedge block; 139. Oblique end support; 14. Power connection rail; 141. Conductive strip; 142. Shell; 143. Baffle; 144. Spring rack; 15. Buckle rack; 2. Electric box; 3. Incoming line; 4. Electric energy metering module; 41. Distribution line; 42. Three-phase watt-hour meter; 43. Lead-out line; 5. Air switch; 6. Output line. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] Reference Figure 1-Figure 10 As shown, the present invention provides an incoming line connection device for an electric energy metering box, comprising an electric box 2, a wiring device 1, an incoming line terminal 3, an electric energy metering module 4 and an output line 6;

[0035] Regarding the electrical box 2, provide installation space, refer to Figure 1 A mounting frame is provided inside the electrical box 2, and the wiring device 1, the incoming line terminal 3 and the electric energy metering module 4 are arranged in partitions inside the electrical box 2 for easy inspection and maintenance. The incoming line terminal 3 and the electric energy metering module 4 are electrically connected to the wiring device 1 through a wire, and the electric energy metering module 4 and the output line 6 are electrically connected through the wiring device 1. The wiring device 1, as an intermediary, can connect the incoming line terminal 3 and the output line 6 to complete power transmission, and connect the electric energy metering module 4 in series between the incoming line terminal 3 and the output line 6 to perform electric energy metering and monitor power consumption in real time.

[0036] Regarding the wiring device 1, which is used to complete the connection of the wire end points, refer to Figure 3 and Figure 4, including an electrical connection rail 14, the electrical connection rail 14 is electrically connected to the incoming line terminal 3, the electrical connection rail 14 is provided with three three-phase conductors corresponding to the incoming line terminal 3, and the three electrical connection rails 14 are arranged horizontally up and down, a lead box 12 is slidably installed at the port of the electrical connection rail 14, and a plurality of lead boxes 12 are provided that can be slid left and right to adjust the position to meet different branching requirements, and junction boxes 13 are installed at both ends of the top and bottom of the lead box 12, the lead box 12 is electrically connected to the junction box 13 located above, and the incoming line terminal 3 is electrically connected to the electric energy metering module 4; the lead box 12 is insulated from the junction box 13 located below, and the electric energy metering module 4 is electrically connected to the output line 6 through the junction box 13 below to complete the wiring operation of the wires. This compact arrangement can reduce the waste of space, and each electric energy metering module 4 corresponds to a group of three lead boxes 12, and the wires corresponding to the incoming and outgoing electricity are also wired and fixed on the junction boxes 13 at the ends of the group of lead boxes 12, which is convenient for grouping and subsequent maintenance.

[0037] The core issue of this solution is how to provide a more stable terminal structure for incoming line connection, which is described in detail below:

[0038] Regarding the lead box 12, it is used to be movably connected with the power rail 14, refer to Figure 4 and Figure 5 The lead box 12 includes a vertically arranged middle plate 122, and a lead shell 121 is installed on the outer side of the middle plate 122 for insulation protection. The middle plate 122 is made of conductive material, and the middle plate 122 is vertically arranged to the power rail 14. The narrow strip-shaped middle plate 122 is vertically connected to the power rail 14 to reduce the obstruction of the docking power rail 14. As many lead boxes 12 as possible are arranged to adapt to the scene with more branch lines. Among them, a through hole is penetrated in the middle of the middle plate 122, and a threaded groove is provided on the inner wall of the through hole. A pressure rod 123 is installed in the through hole, and the pressure rod 123 is connected to the middle plate 122 through a thread. At the same time, a threaded hole is also provided at the front end of the lead shell 121 for screwing with the pressure rod 123. When the pressure rod 123 is loosened and away from the middle plate 122, the lead shell 121 can move freely left and right to adjust the position of the middle plate 122. When the pressure rod 123 is tightened to squeeze the middle plate 122, the position of the lead shell 121 is fixed.

[0039] Regarding the junction box 13, it is used to stably connect with the end of the wire, refer to Figure 7The junction box 13 includes a junction shell 131, which is made of insulating material for insulation protection. The junction shell 131 is provided with an opening at one end away from the lead box 12. The junction shell 131 is trumpet-shaped, and the opening is large, which is convenient for disassembling and assembling the wires. A power connection block 134 is provided at the opening of the junction shell 131. The power connection block 134 is made of conductive material and is wrapped by the junction shell 131. It will not be directly exposed and has high safety. Before the wire is inserted, the wire pressing seat 1 132 and the wire pressing seat 2 133 on the front and rear sides of the power connection block 134 will be away from each other, and the wire pressing The first seat 132 and the second crimping seat 133 are made of insulating materials, which are highly safe during operation. A clamping drive is provided between the first crimping seat 132 and the second crimping seat 133. The clamping drive makes the first crimping seat 132 and the second crimping seat 133 and the power connection block 134 separate from each other to form a wire insertion gap, which facilitates the smooth insertion of the wire end into the wire insertion gap. After the wire insertion is completed, the clamping drive pushes the first crimping seat 132 and the second crimping seat 133 close to the power connection block 134, and clamps the wire end against the side wall of the power connection block 134 to complete the wiring action;

[0040] It should be noted that in order to avoid the extrusion of the ends of the copper wires being squeezed and dispersed, the structures of the relative end faces of the wire pressing seat 132, the wire pressing seat 2 133 and the power connection block 134 are optimized. Figure 8 , a semi-circular arc groove 1 is provided on one side of the wire pressing seat 132 and the wire pressing seat 2 133 directly connected to the power block 134, and a semi-circular arc groove 2 is provided on the side wall of the power block 134 corresponding to the semi-circular arc groove. When the wire pressing seat 132 and the wire pressing seat 2 133 are close to the power block 134, the end of the wire is squeezed and gathered by the semi-circular arc groove 1 and the semi-circular arc groove 2, and contacts the power block 134 in a cylindrical shape. The ends of the wires of multiple copper wires are gathered together in an integral shape. Compared with the flat scattered state, the contact area with the power block 134 is larger, and the ends of the wires are gathered together, the copper wires are tightly compacted, and the small gap will reduce the resistance of the ends of the wires, thereby realizing stable power transmission;

[0041] Further, in order to ensure that the wire end is firmly pressed against the power connection block 134, refer to Fig. 9 The power connection block 134 is located at one end of the inner side of the wiring shell 131 and is equipped with a support ear 137. The wire pressing seat 132 and the wire pressing seat 2 133 are located at one end of the inner side of the wiring shell 131 and are bent toward the support ear 137. A through hole is provided in the middle of the support ear 137. The front end of the wire inserted into the wire insertion gap will be extruded and guided by the inner wall of the bending part of the wire pressing seat 132 and the wire pressing seat 2 133, and will be bent toward the power connection block 134 for a second time to complete the shaping of the wire end. The bent wire end is overlapped at the bending part of the power connection block 134. Compared with the straight wire end, the contact area can be increased, and the connection tightness between the wire end and the power connection block 134 can be further improved, thereby improving the firmness of the wiring.

[0042] In a further embodiment, in order to realize that the wire pressing seat 132 and the wire pressing seat 2 133 can squeeze and bend the wire end, a specific compression drive member configuration is provided, referring to Fig.10 The pressing drive member includes a wedge 138, and an oblique end bolt 135 is screwed on the end of the wire pressing seat 132 through a threaded hole. The oblique end bolt 135 includes a cylindrical bolt and a pad with an inclined rear end. The pad is rotatably connected to the end of the bolt to form an active integrated structure. When the oblique end bolt 135 is tightened, the oblique end bolt 135 will move toward the direction of the wire pressing seat 2 133, wherein the wire pressing seat 2 133 is provided with an oblique end support 139 on one side corresponding to the oblique end bolt 135. The wedge 138 is movably arranged between the oblique end bolt 135 and the oblique end support 139. At this time, because the end faces of the oblique end bolt 135 and the oblique end support 139 are in opposite inclination angles, and a limiting groove 136 cooperating with the wedge 138 is opened on the inner side of the wiring shell 131, the tip of the wedge 138 is facing away from the guide The wire box 12 and the power connection block 134 gradually widen at one end facing away from the lead box 12, so under the guidance of the wedge block 138, the wire pressing seat 132 and the wire pressing seat 2 133 will slide away from the lead box 12. At this time, the wire end can be squeezed and bent in cooperation with the isosceles trapezoidal shape of the power connection block 134. The bent position of the wire end is internally overlapped at one end of the power connection block 134 located on the inner side of the wiring shell 131, and is clamped with the two end angle positions of the end of the power connection block 134 to improve the connection firmness of the wire end. In addition, the wire pressing seat 132 and the wire pressing seat 2 133 move toward the power connection block 134, further approaching the power connection block 134, further pressing the wire end to ensure close contact, reducing the copper wire gap of the multi-copper wire conductor, and effectively improving the firmness of the wiring.

[0043] In a further embodiment, the power rail 14 is used to expand the incoming line terminal 3 to provide more wiring space, see Figure 3 , Figure 5 and Figure 6The electric energy metering module 4 includes a three-phase watt-hour meter 42, which is electrically connected to the lead box 12 through a distribution line 41 and an upper junction box 13, and the three-phase watt-hour meter 42 is connected to the output line 6 through a lead-out line 43 via the lower junction box 13. A connection seat 11 is installed at the end of the power connection rail 14, and the incoming line 3 has a copper terminal for the wire, which is stably connected with the connection seat 11 with a stud and a nut. There are three connection seats 11, which are arranged side by side on the left and right, wherein three power connection rails 14 are provided and arranged horizontally with each other, and the power connection rail 14 includes a conductive strip 141, and the right ends of the three conductive strips 141 are electrically connected to the three connection seats 11 respectively to complete the three-phase power supply, and the conductive strip 141 is electrically connected to the incoming line 3 through the connection seat 11 to provide a longer power connection space, and a shell 142 is installed on the outer side of the conductive strip 141, and the shell 14 2 is made of insulating material to avoid accidental contact with the conductive strip 141. A port is opened on one side of the housing 142 corresponding to the lead box 12, and the port is arranged forward. Multiple lead boxes 12 are placed at the port position, which is convenient for the pressure rod 123 to extend into and contact with the conductive strip 141. The power connection block 134 located above the middle plate 122 is electrically connected to the middle plate 122, and the incoming line terminal 3 can be electrically connected to the distribution line 41, and then electrically connected to the three-phase watt-hour meter 42 for energy measurement. The pressure rod 123 is provided with a conductive head at one end corresponding to the power connection rail 14. The conductive head and the pressure rod 123 are insulated. The length of the conductive head ensures that it is always electrically connected to the middle plate 122, and it will not protrude forward to the front side of the lead box 12 and be exposed. The conductive head is used to complete the electrical connection between the conductive strip 141 and the middle plate 122. The pressure rod 123 is made of insulating material to prevent leakage at the pressure rod 123, and stable protection can be performed.

[0044] It should be noted that, refer to Figure 5 and Figure 6, the shell 142 is provided with a sliding cavity perpendicular to the pressure rod 123 at the port, a baffle 143 is slidably installed in the sliding cavity, and a spring rack 144 is installed between the baffle 143 and the inner wall of the sliding cavity. When the pressure rod 123 is not inserted into the port, the spring rack 144 pushes the baffle 143 out of the sliding cavity, and a limited boss is provided at one end of the baffle 143 on the inner side of the sliding cavity, which can prevent the baffle 143 from completely sliding out of the sliding cavity. At this time, the upper and lower baffles 143 are in contact with each other at one end to seal the port of the shell 142. Multiple groups of baffles 143 are arranged side by side at the port position, so that the front end of the entire conductive strip 141 can be shielded, and the anti-electric shock effect is good. When connecting the lead box 12, the lead box 12 and the rear baffle 143 are connected. The front and back positions are facing each other. At this time, the rotating pressure rod 123 will be inserted backward into the port. Because the front side wall of the baffle 143 is set as an inclined surface, and it is gradually inclined backward from the sliding cavity to the port direction, when the pressure rod 123 moves backward, the pressure rod 123 will squeeze and push the baffle 143 to the upper and lower sides through the extrusion inclined surface, exposing the conductive strip 141 for electrical connection. At the same time, the lead shell 121 will replace the baffle 143 to cover this section of the port, the conductive position will not be directly exposed, and the conductive strip 141 is still in a completely covered state, with high safety.

[0045] In a further embodiment, in order to realize the quick installation of the lead box 12, refer to Figure 4 and Figure 5 , convex strips are arranged at both ends of the top and bottom of the power connection rail 14, and the convex strip is located in the center of the power connection rail 14, leaving space with the rear side, and a buckle frame 15 is installed at one end of the lead box 12 close to the power connection rail 14, and the rear end of the buckle frame 15 is bent inward and can be wrapped around the outside of the convex strip. At the same time, the left end of the convex strip is shorter than the left end of the power connection rail 14, leaving a gap for the buckle frame 15 to move forward and backward, so that the number of lead boxes 12 can be increased or decreased at this position, and the buckle frame 15 is slidably buckled at the position of the convex strip, and can limit the left and right sliding of the lead box 12, ensuring that the lead box 12 slides left and right in close contact with the power connection rail 14.

[0046] In a further embodiment, to ensure the safety of wiring operation, refer to Figure 2 A leakage protection switch is provided between the connection base 11 and the incoming terminal 3. When the connection between the connection base 11 and the incoming terminal 3 is performed, the leakage protection switch is disconnected. At this time, the lower half of the incoming terminal 3 is powered off, and a safe connection can be made. Similarly, an air switch 5 is provided in series on the lead-out line 43, and a power-off operation can be performed when the lead-out line 43 and the output line 6 are connected, thereby improving safety.

[0047] The working principle of the present invention is as follows:

[0048] The incoming end 3 of the power supply line extends downward into the electric box 2 and is electrically connected to the power rail 14 in the wiring device 1. The power rail 14 is connected to a plurality of electric energy metering modules 4 through the lead box 12. The electric energy metering modules 4 are electrically connected to the output line 6 through the wiring device 1 to perform parallel power supply. The electric energy metering modules 4 can detect electric variables.

[0049] A variable number of lead boxes 12 are slidably provided at the front end of the power connection rail 14, which are used to connect different numbers of electric energy metering modules 4 in parallel according to the branch line requirements, and are electrically connected through the pressure rod 123 and the conductive strip 141 to carry out branch line power supply. The power connection rail 14 is provided with a baffle 143 for anti-electric shock protection. The pressure rod 123 can open the baffle 143 when it is connected to the conductive strip 141, and the positioning of the lead box 12 is completed synchronously. At this time, the lead box 12 replaces the corresponding baffle 143 to connect to the power connection rail 14 for sealing protection;

[0050] A junction box 13 is electrically connected to the top of the lead box 12, and the electrical connection between the incoming terminal 3 and the electric energy metering module 4 is completed through the distribution line 41. An independent junction box 13 is provided at the bottom of the lead box 12, which is used to electrically connect the corresponding electric energy metering module 4 with the output line 6, which is convenient for group maintenance;

[0051] Before wiring, the pressing drive pushes the wire pressing seat 1 132 and the wire pressing seat 2 133 away from the power connection block 134 to form a wire plugging space. When the ends of the branch wire 41, the lead wire 43 and the output wire 6 are respectively inserted into the corresponding wire plugging spaces, the pressing drive reverses to make the wire pressing seat 1 132 and the wire pressing seat 2 133 horizontally close to the power connection block 134 to press the ends of the wires.

[0052] In the process of tightening the end of the wire, the end of the wire is squeezed and gathered by the semi-circular arc groove 1 and the semi-circular arc groove 2, and is in full contact with the power connection block 134 to reduce resistance. As the wire pressing seat 132 and the wire pressing seat 2 133 slide horizontally toward the power connection block 134, the end of the wire is bent and shaped in coordination with the isosceles trapezoidal shape of the power connection block 134, and is tightly overlapped with the end angle position of the power connection block 134 to improve firmness.

[0053] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An incoming line connection device for an electric energy meter box, comprising an electric box (2), a wiring device (1), an incoming line terminal (3), an electric energy metering module (4) and an output line (6), wherein the incoming line terminal (3) and the electric energy metering module (4) are electrically connected to the wiring device (1) via a wire, and the electric energy metering module (4) and the output line (6) are electrically connected via the wiring device (1), characterized in that: The wiring device (1) comprises an electrical connection rail (14) and a lead box (12) mounted at a port of the electrical connection rail (14), and a wiring box (13) is mounted at both top and bottom ends of the lead box (12); The lead box (12) comprises a vertically arranged middle plate (122), the middle plate (122) being arranged perpendicularly to the power connection rail (14), a pressure rod (123) being installed through the middle of the middle plate (122), the pressure rod (123) being slidably pressed against the power connection rail (14); The junction box (13) comprises a junction housing (131), an electrical connection block (134) being arranged at an opening of the junction housing (131), and a first crimping seat (132) and a second crimping seat (133) being arranged on both sides of the electrical connection block (134) in a relative manner, a clamping drive member being arranged between the first crimping seat (132) and the second crimping seat (133), and the first crimping seat (132) and the second crimping seat (133) being close to the electrical connection block (134) so ​​as to gather and bend the ends of the wires.

2. The electric energy meter box incoming line connection device according to claim 1, characterized in that: The clamping drive member comprises a wedge block (138); an oblique end face bolt (135) is screwed onto an end of the first wire pressing seat (132) through a threaded hole; an oblique end face support (139) is installed on a side of the second wire pressing seat (133) corresponding to the oblique end face bolt (135); the wedge block (138) is movably arranged between the oblique end face bolt (135) and the oblique end face support (139); and a limiting groove (136) for cooperating with the wedge block (138) is provided on the inner side of the wiring shell (131).

3. The electric energy meter box incoming line connection device according to claim 1, characterized in that: The first crimping seat (132) and the second crimping seat (133) are provided with a semi-circular arc groove (1) on one side of the connecting block (134), and the side wall of the connecting block (134) is provided with a semi-circular arc groove (2) at a location corresponding to the semi-circular arc groove.

4. The electric energy meter box incoming line connection device according to claim 1, characterized in that: The power connection block (134) is located at one end inside the wiring shell (131) and is provided with a support ear (137); the first crimping seat (132) and the second crimping seat (133) are located at one end inside the wiring shell (131) and are bent toward the support ear (137); and a through hole is provided in the middle of the support ear (137).

5. The electric energy meter box incoming line connection device according to claim 1, characterized in that: Three power connection rails (14) are provided and arranged horizontally with each other. The power connection rails (14) include a conductive bar (141). A housing (142) is sleeved and installed outside the conductive bar (141). A port is provided on one side of the housing (142) corresponding to the lead box (12).

6. The electric energy meter box incoming line connection device according to claim 1, characterized in that: A buckle frame (15) is installed at one end of the lead box (12) close to the power connection rail (14), and the buckle frame (15) is horizontally slidably engaged with the lead box (12).

7. The electric energy meter box incoming line connection device according to claim 5, characterized in that: The power connection block (134) located above the middle plate (122) is electrically connected to the middle plate (122); a lead shell (121) is sleeved and installed on the outer side of the middle plate (122); a conductive head is provided at one end of the pressure rod (123) corresponding to the power connection rail (14); and insulation is provided between the conductive head and the pressure rod (123).

8. The electric energy meter box incoming line connection device according to claim 7, characterized in that: The housing (142) is provided with a sliding cavity perpendicular to the pressure rod (123) at the port, a baffle (143) is slidably installed in the sliding cavity, and a bomb rack (144) is installed between the baffle (143) and the inner wall of the sliding cavity.

9. The electric energy meter box incoming line connection device according to claim 1, characterized in that: A connection seat (11) is installed at the end of the power connection rail (14), the connection seats (11) are arranged side by side on the left and right, and a leakage protection switch is provided between the connection seat (11) and the incoming line terminal (3).

10. The electric energy meter box incoming line connection device according to claim 1, characterized in that: The electric energy metering module (4) comprises a three-phase watt-hour meter (42), the three-phase watt-hour meter (42) being electrically connected to a lead box (12) via a distribution line (41), the three-phase watt-hour meter (42) being connected to an output line (6) via a lead-out line (43) via a junction box (13), and an air switch (5) being arranged in series on the lead-out line (43).

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