Electric energy metering box with insulation protection mechanism

Abstract

The present application relates to the field of electric power metering facilities, in particular to an electric energy metering box with insulation protection mechanism, comprising an electric meter box and an electric meter body, the electric meter body is arranged on the rear side wall of the electric meter box, a plurality of electric wires are vertically penetrated into the bottom of the electric meter box, a plurality of insulation protection assemblies corresponding to the distribution of the electric wires are arranged in the electric meter box, the insulation protection assembly comprises two groups of vertically extending slide rails, a clamping shaft is arranged in front of each group of slide rails, and a sliding block supporting the rotation of the clamping shaft is vertically arranged on the opposite side of the two groups of slide rails, an insulation cylinder accommodating the penetration of the electric wire is arranged on the top side of the two groups of sliding blocks, and a groove wheel is coaxially fixed outside the clamping shaft, when the electric wire is removed or reset, the meshing of the gear and the rack makes the pushing speed of the groove wheel on the electric wire greater than the downward speed of the sliding block, so that the core is simultaneously received in the insulation cylinder during the process of disconnecting the electric meter, thereby reducing the safety hazard of accidentally touching the end of the electric wire during the process of removing the wire, and improving the operation safety.

Description

Technical Field

[0001] This invention relates to the field of power metering facilities, and more specifically to a power metering box with an insulation protection mechanism. Background Technology

[0002] As a terminal device used for electricity metering in a power system, the electricity metering box integrates core electrical components such as the meter body, terminals, and multiple live wires. During routine installation, inspection, and maintenance, operators frequently need to connect or disconnect wires from the meter body. In this process, they inevitably come into contact with exposed live wire cores, posing a significant safety risk to the operators. Therefore, developing reliable insulation protection devices to ensure personnel safety during maintenance operations is a technical problem that has been a continuous focus and urgently needs to be solved in this field.

[0003] In the prior art, Chinese patent application with publication number CN117496646A discloses a low-voltage metering box insulation protection system, providing a technical solution focused on preventing electricity theft.

[0004] This technology, by installing insulating linings with puncture-resistant wires on the inside of the enclosure and door, and in conjunction with a dedicated insulation protection controller, enables the triggering of on-site audible and visual alarms and the remote transmission of alarm signals to the power system control terminal when the enclosure is forcibly damaged or the door is illegally opened. This design, through electronic monitoring and alarm mechanisms, enhances the anti-theft and early warning capabilities of the metering box to a certain extent, and also provides basic insulation and protection for the enclosure structure.

[0005] However, this type of technical solution is essentially a passive, post-event alarm protection method, and it does not provide an effective solution for the direct safety risks faced by operators during legitimate and routine maintenance and repair work.

[0006] Specifically, when operators perform maintenance on an electricity meter by disconnecting the wires according to procedures, they must first loosen the wiring screws to detach the live wire at the top of the wire from the meter body. At this moment, with the wire completely unsecured and exposed to electricity, there is a high risk of electric shock due to external force, accidental contact, or electrostatic induction, posing a direct threat to the operator's personal safety. Clearly, existing alarm systems are ineffective against this type of operational risk.

[0007] Therefore, how to provide an active safety protection device that can reliably insulate the wire when it is detached from the meter body, thereby fundamentally eliminating the risk of electric shock, has become a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0008] The purpose of this invention is to provide an energy metering box with an insulating protection mechanism to solve the above-mentioned problems. When removing or resetting the wire, the meshing of the gear and rack makes the pushing speed of the grooved wheel on the wire greater than the downward movement speed of the slider. This allows the wire core to be simultaneously drawn into the insulating cylinder during the process of detaching from the meter, thereby reducing the safety hazard of accidentally touching the end of the wire during the wire removal process and improving operational safety. See the following description for details.

[0009] To achieve the above objectives, the present invention provides the following technical solution:

[0010] The present invention provides an energy metering box with an insulation protection mechanism, comprising an electricity meter box and an electricity meter body. The electricity meter body is disposed on the rear side wall inside the electricity meter box. Multiple wires are vertically inserted into the bottom of the electricity meter box. Multiple sets of insulation protection components corresponding to the distribution of the wires are disposed inside the electricity meter box. The insulation protection components include two sets of vertically extending slide rails. A clamping shaft is disposed in front of each of the two sets of slide rails. Slider blocks that support the rotation of the clamping shafts slide vertically on opposite sides of the two sets of slide rails. An insulating cylinder for accommodating the wires is disposed on the top side of the two sets of sliders.

[0011] A grooved wheel is coaxially fixed to the outside of the clamping shaft. Two sets of grooved wheels are distributed in parallel and cooperate to form a rotating clamping mechanism for clamping the wire. A gear is fixed to the rear end of the clamping shaft. A rack of meshing gear is vertically arranged inside the slide rail. The top end of the wire passes through the insulating cylinder. When the slider supports the clamping shaft to slide downward, the rack supports the gear to drive the clamping shaft to rotate. The grooved wheel pushes the top end of the wire out of the meter body and retracts into the insulating cylinder.

[0012] When using the above-mentioned energy metering box with an insulation protection mechanism, during the initial wiring, push the slider upward to keep the top of the insulation cylinder pressed against the bottom of the wire hole of the meter body. Then, pass the wire upward along one end of the top core through the grooved wheels of the two sets of clamping shafts and the insulation cylinder in sequence, ensuring that the top of the core passes through the insulation cylinder and extends into the wire hole of the meter body. Then, tighten the wiring screw to press and fix the top of the core, thereby passing the wire upward along the insulation protection component into the wiring point of the meter body.

[0013] When disconnecting the wire, loosen the connection screw and pull the slider down. Use the grooved wheel on the outer side of the clamping shaft on the slider to pull the wire down. Set the downward sliding speed of the slider to V1. At the same time, the gear at the rear end of the clamping shaft and the rack on the inner side of the slide rail slide vertically relative to each other. Then, under the support of the rack, the gear is driven to rotate. In this way, while the slider supports the clamping shaft to move downward, the clamping shaft also drives the grooved wheel to rotate synchronously, thereby clamping and pushing the inner wire downward at a speed of V2. At this time, V2 is greater than V1, which can increase the downward movement speed of the top of the wire. During the process of the slider supporting the insulation cylinder to move downward, because the wire moves at a faster speed under the support of the grooved wheel, the part of the wire that is protruding from the insulation cylinder can be quickly retracted into the insulation cylinder, ensuring that the wire core is protected after it comes out of the meter body and is retracted into the insulation cylinder.

[0014] Similarly, when resetting the connection between the wire and the meter body, the slider is pushed upward until the top of the insulating cylinder abuts against the bottom of the meter body. During this process, the grooved wheel increases the upward speed of the wire held between the two sets of grooved wheels through the cooperation of the gear and rack at the rear end of the clamping shaft. Thus, according to the initial installation depth, the top of the wire core is inserted into the wiring hole again to complete the wire resetting connection.

[0015] When it is necessary to adjust the distance between the two sets of grooved wheels according to different diameter wires, turn the knob to drive the bidirectional screw to rotate. The two external threads on the bidirectional screw in opposite directions drive the two sets of adjusting blocks to slide in opposite directions. The adjusting blocks support the two sets of slide rails to move closer or further apart, thereby changing the distance between the two sets of grooved wheels to clamp wires of different diameters.

[0016] Preferably, the slider has a through-hole in the middle to accommodate the clamping shaft, and the slider is rotatably engaged with the clamping shaft through the through-hole. A limiting rod is fixed inside the slide rail, which penetrates the slider and is fitted with the slider with a clearance.

[0017] Preferably, the limiting rod below the slider is threadedly fitted with a limiting component on its outer side.

[0018] Preferably, the meter box is provided with a mounting bracket inside. The front side of the mounting bracket is provided with multiple sets of mounting frames corresponding to the insulation protection components. Two adjusting blocks are arranged symmetrically in the mounting frames, and the two adjusting blocks are respectively fixed to support the lateral movement of the two front slide rails.

[0019] Preferably, the adjusting block has a side groove for a horizontally sliding mounting frame on its outer side, and a horizontally extending bidirectional screw is rotatably provided in the middle of the mounting frame. The adjusting block has a threaded hole through its middle to accommodate the bidirectional screw. The two ends of the bidirectional screw inside the mounting frame are provided with external threads of opposite directions, and the external threads are threaded with the threaded holes. A knob is fixed to the outer end of the bidirectional screw.

[0020] Preferably, the mounting frame is provided with rotating seats on both sides to support the rotation of the bidirectional screw, the mounting bracket is densely covered with longitudinally penetrating mounting holes, and the mounting frame is provided with fixing ears with longitudinally penetrating structures at the four corners.

[0021] Preferably, an upwardly extending auxiliary curved arm is fixed to the front side of the slider, and horizontally extending guide rods are fixed to both sides of the outer side of the insulating cylinder. A guide ear is fixed to the bottom side of the auxiliary curved arm to accommodate the guide rods passing through, and the guide rods and guide ears are fitted with a clearance.

[0022] Preferably, the front side of the adjusting block has a longitudinally penetrating movable hole, and the slide rail has a plurality of fixed holes corresponding to the movable hole distributed longitudinally. The plurality of fixed holes are arranged vertically, and a tie screw for fixing and connecting the movable hole is inserted in the fixed hole.

[0023] Preferably, the meter box includes a box body for accommodating the meter body, the front of the box body is provided with an openable cover, and the rear of the box body is fixed with an insulating back plate. The bottom front of the meter body is provided with multiple receiving slots corresponding to the wires, and the bottom of the meter body is provided with a wire-passing hole for accommodating the wire core at the top of the wire to pass through.

[0024] Preferably, the receiving groove is threaded with a wiring screw whose rear end extends into the wire hole to abut and fix the wire core, and the front two sides of the meter body are provided with mounting and dismounting countersunk holes for screws to be inserted to connect to the insulating back plate.

[0025] The beneficial effects are as follows: 1. The present invention converts the vertical movement of the slider into the rotation of the clamping shaft through the meshing of gears and racks. When removing or resetting the wire, the meshing of gears and racks makes the pushing speed of the grooved wheel on the wire greater than the downward movement speed of the slider, thereby realizing the active recovery of the wire end. This ensures that the wire core can be simultaneously pulled into the insulating cylinder when it is detached from the meter, thereby reducing the safety hazard of accidentally touching the wire end during the wire removal process and improving the safety of operation.

[0026] 2. The system uses two sets of grooved wheels to provide a stable clamping force on the wire throughout the entire lifting process of wire connection and disconnection, preventing the wire from shaking or bending, and ensuring that the end of the wire can be aligned and enter the wire hole of the meter body.

[0027] 3. The distance between the two sets of slide rails can be easily adjusted by rotating the bidirectional screw, thereby synchronously changing the distance between the two sets of grooved wheels. This allows the insulation protection component to adapt to wires of different diameters, significantly improving the versatility and applicability of the device and reducing the cost of use.

[0028] 4. The mounting holes on the mounting bracket and the fixing ears at the four corners of the mounting frame provide a variety of installation position options, which can be flexibly selected according to the site environment to adapt to different installation needs. At the same time, the slide rail and the adjusting block are connected by tie screws and movable holes and fixing holes, which realizes flexible adjustment of the initial height of the slide rail, ensuring that the device can match the installation height of different models of electric meter bodies.

[0029] 5. By setting an auxiliary curved arm and guide ear on the front side of the slider, which cooperates with the guide rod on the outside of the insulating cylinder, the shaking or deflection of the insulating cylinder during movement is effectively prevented, and the wire is prevented from getting stuck at the opening of the cylinder when it is inserted or withdrawn, thus ensuring the smooth and stable pushing and retrieving of the wire.

[0030] 6. An adjustable height limiter is installed on the limit rod of the slide rail to set a lower limit for the downward movement of the slider, preventing the wire from completely coming out of the groove wheel and insulating cylinder due to excessive pulling, and ensuring that the wire end core is always inside the device, thereby ensuring the insulation protection effect. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0033] Figure 2 This is a three-dimensional structural diagram of the box lid in the closed state of the present invention;

[0034] Figure 3 This is a structural breakdown diagram of the present invention;

[0035] Figure 4 This is a structural breakdown diagram of the meter box of the present invention;

[0036] Figure 5 This is a partial three-dimensional structural schematic diagram of the present invention;

[0037] Figure 6 This is a partial structural breakdown diagram of the present invention;

[0038] Figure 7 This is a three-dimensional structural diagram of the slide rail of the present invention;

[0039] Figure 8 This is a structural disassembly diagram of the slide rail and clamping shaft of the present invention;

[0040] Figure 9This is a structural disassembly diagram of the slider and clamping shaft of the present invention;

[0041] Figure 10 This is a structural schematic diagram of the present invention in the disassembled state;

[0042] Figure 11 This is a three-dimensional structural diagram of the bottom of the meter body of the present invention;

[0043] Figure 12 This is a front view of the box lid in the closed state of the present invention.

[0044] The annotations in the attached figures are explained as follows:

[0045] 1. Meter box; 101. Box body; 102. Box cover; 103. Insulating back plate; 2. Meter body; 201. Receiving groove; 202. Wiring screw; 203. Wire hole; 204. Removal countersunk hole; 3. Slide rail; 301. Rack; 302. Fixing hole; 4. Slider; 401. Support shaft hole; 402. Auxiliary bent arm; 403. Guide ear; 5. Clamping shaft; 501. Grooved wheel; 5 02. Gear; 6. Insulating cylinder; 601. Guide rod; 7. Limiting rod; 701. Limiting component; 8. Adjusting block; 801. Movable hole; 802. Screw hole; 803. Side groove; 9. Mounting frame; 901. Fixing ear; 902. Rotating seat; 10. Double-acting screw; 10a. Knob; 10b. External thread; 11. Wire; 11a. Wire core; 12. Mounting bracket; 12a. Mounting hole. Detailed Implementation

[0046] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0047] It should be noted that all directional and positional terms used in this invention, such as "up," "down," "left," "right," "front," "back," "vertical," "horizontal," "inner," "outer," "top," "lower," "lateral," "longitudinal," and "center," are only used to explain the relative positional relationships and connections between components in a specific state (as shown in the accompanying drawings). They are merely for the convenience of describing the invention and do not require the invention to be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on the invention. Furthermore, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated.

[0048] In the description of this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0049] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0050] See Figures 1-11 As shown, the present invention provides an energy metering box with an insulation protection mechanism. The meter body 2 is disposed on the rear side wall inside the meter box 1. Multiple wires 11 are vertically inserted into the bottom of the meter box 1. Multiple sets of insulation protection components corresponding to the distribution of the wires 11 are disposed inside the meter box 1. The insulation protection components include two sets of vertically extending slide rails 3. A clamping shaft 5 is disposed in front of each of the two sets of slide rails 3. Sliding blocks 4 that support the rotation of the clamping shaft 5 are vertically slidable on opposite sides of the two sets of slide rails 3. An insulating cylinder 6 for accommodating the wires 11 is disposed on the top side of the two sets of sliding blocks 4.

[0051] A grooved wheel 501 is coaxially fixed to the outside of the clamping shaft 5. Two sets of grooved wheels 501 are distributed in parallel and cooperate to form a rotating clamping mechanism for clamping the wire 11. A gear 502 is fixed to the rear end of the clamping shaft 5. A rack 301 that meshes with the gear 502 is vertically arranged inside the slide rail 3. The top end of the wire 11 passes through the insulating cylinder 6. When the slider 4 supports the clamping shaft 5 to slide downward, the rack 301 supports the gear 502 to drive the clamping shaft 5 to rotate. The grooved wheel 501 pushes the top end of the wire 11 out of the meter body 2 and retracts into the insulating cylinder 6.

[0052] When it is necessary to connect the wire 11 to the meter body 2, push the two sets of sliders 4 upward so that they slide vertically along the corresponding slide rails 3, thereby supporting the clamping shaft 5 and the top insulating cylinder 6 to move upward synchronously until the top of the insulating cylinder 6 is close to the meter body 2. Then, pass one end of the wire 11 upward through the two sets of grooved wheels 501 and the insulating cylinder 6 in sequence, finally ensuring that the top of the wire 11 extends into the meter body 2, thereby completing the connection of the wire 11.

[0053] When it is necessary to remove the wire 11 from the meter body 2, pull down the slider 4 so that it slides down along the slide rail 3. While the slider 4 supports the clamping shaft 5 to move downward, the gear 502 at its rear end slides vertically relative to the rack 301 on the inner side of the slide rail 3. Then, under the meshing support of the rack 301, the gear 502 and the clamping shaft 5 are driven to rotate. In this way, the clamping shaft 5 drives the grooved wheel 501 to rotate synchronously, thereby pushing the wire 11 clamped between the two sets of grooved wheels 501 downward. During the downward movement of the slider 4 and the insulating cylinder 6, the top of the wire 11 is driven by the grooved wheel 501 to disengage from the inside of the meter body 2 and retract into the insulating cylinder 6 to achieve insulation protection.

[0054] See Figures 5-11 As shown, in an optional embodiment, the slider 4 has a support shaft hole 401 through its middle to accommodate the clamping shaft 5. The slider 4 rotates with the clamping shaft 5 through the support shaft hole 401. A vertically extending limiting rod 7 is fixed inside the slide rail 3, and the limiting rod 7 is clearance-fitted with the slider 4. A limiting element 701 is threaded onto the outer side of the limiting rod 7 below the slider 4. With this configuration, the cooperation between the support shaft hole 401 and the limiting rod 7 ensures that the slider 4 will not rotate or deviate when sliding vertically along the slide rail 3, thus ensuring the rotation of the clamping shaft 5. To ensure stability during the rotation process, the limiting component 701 can be a nut. Rotating it can adjust its height position on the limiting rod 7, thereby setting the lowest position for the slider 4 to slide downwards. When the slider 4 is pulled down to remove the wire 11, the slider 4 is stopped after it comes into contact with the limiting component 701 and cannot continue to slide down. This avoids the wire 11 from completely coming out of the groove wheel 501 and the insulating cylinder 6 due to excessive pulling, ensuring that the end of the wire 11 is inside the insulating cylinder 6, guaranteeing the insulation protection effect, and facilitating subsequent rewiring operations.

[0055] See Figures 3-6 As shown, the meter box 1 is equipped with a mounting bracket 12. The front side of the mounting bracket 12 is equipped with multiple sets of mounting frames 9 corresponding to the insulation protection components. Two adjusting blocks 8 are arranged horizontally symmetrically inside the mounting frame 9. The two adjusting blocks 8 are fixedly supported by the two slide rails 3 on the front side for horizontal movement. The outer side of the adjusting block 8 is equipped with a side groove 803 that is horizontally sliding and fits the mounting frame 9. The middle of the mounting frame 9 is rotatably equipped with a horizontally extending bidirectional screw 10. The middle of the adjusting block 8 is equipped with a screw hole 802 that accommodates the bidirectional screw 10. The two ends of the bidirectional screw 10 inside the mounting frame 9 are equipped with external threads 10b with opposite directions of rotation. The external threads 10b are threadedly engaged with the screw hole 802. The outer end of the bidirectional screw 10 is fixed with a knob 10a. Both sides of the mounting frame 9 are equipped with rotating seats 902 that support the rotation of the bidirectional screw 10. The mounting bracket 12 is densely covered with longitudinally penetrating mounting holes 12a. The four corners of the mounting frame 9 are equipped with fixing ears 901 with longitudinal penetrating structures.

[0056] With this configuration, rotating the knob 10a drives the bidirectional screw 10 to rotate under the support of the rotating seats 902 on both sides. The external threads 10b at both ends of the bidirectional screw 10, which have opposite directions of rotation, engage with the screw holes 802 of the two adjusting blocks 8, thereby driving the two adjusting blocks 8 to slide synchronously towards or away from each other along the side grooves 803 of the mounting frame 9. This supports the two slide rails 3 mounted on the adjusting blocks 8 to move closer or further apart, thereby adjusting the distance between the two sets of grooved wheels 501 so that they can accommodate and clamp wires 11 of different diameters. At the same time, by using the densely distributed mounting holes 12a on the mounting bracket 12 and the fixing ears 901 at the four corners of the mounting frame 9, different mounting holes 12a and fixing ears 901 can be selected to connect according to the site environment, providing a variety of installation positions to meet different installation needs.

[0057] See Figures 5-11 As shown, an upwardly extending auxiliary curved arm 402 is fixed to the front side of the slider 4, and a laterally extending guide rod 601 is fixed to both sides of the insulating cylinder 6. A guide ear 403 is fixed to the bottom side of the auxiliary curved arm 402 to accommodate the guide rod 601 passing through, and the guide rod 601 and the guide ear 403 are fitted with a clearance. With this arrangement, during the process of the slider 4 driving the clamping shaft 5 and the insulating cylinder 6 to slide up and down synchronously, the guide ear 403 fixed on the auxiliary curved arm 402 on the front side of the slider 4 cooperates with the guide rod 601 fixed on the outside of the insulating cylinder 6, so as to guide and transmit the lifting and lowering of the insulating cylinder 6, so that the insulating cylinder 6 can be aligned with the wire hole 203 at the bottom of the meter body 2.

[0058] See Figures 7-10 As shown, a movable hole 801 runs longitudinally through the front side of the adjusting block 8, and multiple fixed holes 302 corresponding to the movable holes 801 run longitudinally through the slide rail 3. The multiple fixed holes 302 are arranged vertically, and pull screws that are fixedly connected to the movable holes 801 are inserted into the fixed holes 302. With this configuration, when it is necessary to adjust the overall initial height of the slide rail 3 or the initial position of the adjusting block 8, the pull screws can be loosened first, and then the slide rail 3 or adjusting block 8 can be slid up and down to adjust it to the required height position. Finally, the pull screws are inserted into the corresponding movable holes 801 and fixed holes 302 and tightened to lock the position of the slide rail 3 and the adjusting block 8. The initial installation position of the slide rail 3 and the adjusting block 8 can be adjusted according to the actual installation height of the meter body 2 or different working conditions.

[0059] See Figures 1-12As shown, the meter box 1 includes a box body 101 that houses the meter body 2. The front of the box body 101 is provided with an openable cover 102, and an insulating back plate 103 is fixed to the rear of the box body 101. The bottom front of the meter body 2 is provided with multiple receiving slots 201 corresponding to the wires 11, and the bottom of the meter body 2 is provided with a wire hole 203 for the wire core 11a at the top of the wire 11 to pass through. The openable cover 102 cooperates with the box body 101 to facilitate the installation, inspection and subsequent maintenance of the meter body 2 and the internal wires 11. At the same time, the insulating back plate 103 can effectively isolate the meter body 2 from the mounting wall or other conductive bodies, reducing the risk of leakage.

[0060] See Figures 3-11 As shown, the receiving groove 201 has a threaded connection with a connecting screw 202 whose rear end extends into the wire hole 203 to press and fix the wire core 11a. The front sides of the meter body 2 are provided with mounting and dismounting countersunk holes 204 for screws to be inserted into and connected to the insulating back plate 103. By rotating the end of the connecting screw 202, it can be screwed into or out of the receiving groove 201 to press or loosen the wire core 11a inserted into the wire hole 203, thereby realizing the electrical connection between the wire 11 and the meter body 2. At the same time, the mounting and dismounting countersunk holes 204 allow the meter body 2 to be fastened to the insulating back plate 103 by screws.

[0061] Using the above structure, when wiring for the first time, push the slider 4 upward to keep the top of the insulating cylinder 6 pressed against the bottom of the wire hole 203 of the meter body 2. Then, push the wire 11 upward along one end of the top core 11a and pass it through the grooved wheels 501 of the two sets of clamping shafts 5 and the insulating cylinder 6 in sequence, ensuring that the top of the core 11a goes out of the insulating cylinder 6 and extends into the wire hole 203 of the meter body 2. Then tighten the wiring screw 202 to press and fix the top of the core 11a, thereby passing the wire 11 upward along the insulation protection component into the wiring point of the meter body 2.

[0062] During disconnection, loosen the wiring screw 202 and pull down the slider 4. The outer grooved wheel 501 of the clamping shaft 5 mounted on the slider 4 pulls the wire 11 downwards. Set the downward sliding speed of the slider 4 to V1. Simultaneously, the gear 502 at the rear end of the clamping shaft 5 slides vertically relative to the rack 301 on the inner side of the slide rail 3. Under the support of the rack 301, the gear 502 rotates. Thus, while the slider 4 supports the clamping shaft 5 in its downward translation, the clamping shaft 5 also drives the grooved wheel 501 to rotate synchronously, thereby clamping and pushing the inner wire 11 downwards at a speed V2. At this time, V2 is greater than V1, thus increasing the downward movement speed of the top of the wire 11. During the downward movement of the insulating cylinder 6 supported by the slider 4, because the wire 11 moves at a faster speed under the support of the grooved wheel 501, the portion of the wire 11 that has protruded from the insulating cylinder 6 can be quickly retracted into the insulating cylinder 6, ensuring protection for the wire core 11a after it exits the meter body 2 and is retracted into the insulating cylinder 6 (see Appendix). Figure 10 );

[0063] Similarly, when reconnecting the wire 11 to the meter body 2, the slider 4 is pushed upward until the top of the insulating cylinder 6 abuts against the bottom side of the meter body 2. During this process, the grooved wheel 501 increases the upward speed of the wire 11 held between the two sets of grooved wheels 501 through the cooperation of the rear gear 502 of the clamping shaft 5 and the rack 301, so that the top of the wire core 11a is inserted into the wiring hole again according to the initial installation depth, and the wire 11 is reset and connected.

[0064] When it is necessary to adjust the distance between the two sets of grooved wheels 501 according to different diameter wires 11, turn the knob 10a to drive the bidirectional screw 10 to rotate. Utilize the two external threads 10b on the bidirectional screw 10 that turn in opposite directions to drive the two sets of adjusting blocks 8 to slide in opposite directions. The adjusting blocks 8 support the two sets of slide rails 3 to be adjusted to be close to or far apart, thereby changing the distance between the two sets of grooved wheels 501 to clamp wires 11 of different diameters.

[0065] By meshing gear 502 and rack 301, the vertical movement of slider 4 is converted into the rotation of clamping shaft 5. When removing or resetting wire 11, the meshing of gear 502 and rack 301 makes the pushing speed of grooved wheel 501 on wire 11 greater than the downward movement speed of slider 4, thus realizing the active retraction of the end of wire 11. This ensures that the wire core 11a can be simultaneously pulled into insulating cylinder 6 during the process of detaching from the meter, thereby reducing the safety hazard of accidentally touching the end of wire 11 during wire removal and improving operational safety.

[0066] The device employs two sets of grooved wheels 501 to provide a stable clamping force on the wire 11 throughout the entire lifting process of connecting and disconnecting the wire 11, preventing the wire 11 from shaking or bending, and ensuring that the end of the wire 11 can be aligned with and enter the wire hole 203 of the meter body 2.

[0067] The distance between the two sets of slide rails 3 can be easily adjusted by rotating the bidirectional screw 10, thereby synchronously changing the distance between the two sets of grooved wheels 501. This allows the insulation protection component to adapt to wires 11 with different wire diameters, significantly improving the versatility and applicability of the device and reducing the cost of use.

[0068] The mounting holes 12a densely distributed on the mounting bracket 12 and the fixing ears 901 at the four corners of the mounting frame 9 provide a variety of installation position options, which can be flexibly selected according to the site environment to adapt to different installation needs. At the same time, the slide rail 3 and the adjusting block 8 are connected by pull screws and movable holes 801 and fixing holes 302 to realize flexible adjustment of the initial height of the slide rail 3, ensuring that the device can match the installation height of different models of electric meter bodies 2.

[0069] By setting an auxiliary curved arm 402 and a guide ear 403 on the front side of the slider 4, which cooperates with the guide rod 601 on the outside of the insulating cylinder 6, the swaying or deflection of the insulating cylinder 6 during movement is effectively prevented, and the wire 11 is prevented from getting stuck in the cylinder opening when it is inserted or withdrawn, thus ensuring the smooth and stable pushing and retrieving process of the wire 11.

[0070] An adjustable height limiter 701 is provided on the limit rod 7 of the slide rail 3 to set a lower limit for the downward movement of the slider 4, so as to prevent the wire 11 from being completely detached from the groove wheel 501 and the insulating cylinder 6 due to excessive pulling, and to ensure that the wire core 11a at the end of the wire 11 is always inside the device, thereby ensuring the insulation protection effect.

[0071] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. An electricity metering box with an insulating protection mechanism, comprising a meter box (1) and a meter body (2), wherein the meter body (2) is disposed on the rear side wall inside the meter box (1), and multiple wires (11) are vertically inserted into the bottom of the meter box (1), characterized in that: The meter box (1) is equipped with multiple sets of insulation protection components corresponding to the distribution of wires (11). The insulation protection components include two sets of vertically extending slide rails (3). Each set of slide rails (3) has a clamping shaft (5) in front of it. The two sets of slide rails (3) have vertically sliding sliders (4) that support the rotation of the clamping shafts (5) on opposite sides. The top sides of the two sets of sliders (4) are equipped with insulating cylinders (6) that accommodate the wires (11) to pass through. The clamping shaft (5) is coaxially fixed with a grooved wheel (501). Two sets of grooved wheels (501) are distributed in parallel and cooperate to form a rotating clamping mechanism for clamping the wire (11). A gear (502) is fixed at the rear end of the clamping shaft (5). A rack (301) of meshing gear (502) is vertically arranged on the inner side of the slide rail (3). The top end of the wire (11) passes through the insulating cylinder (6). When the slider (4) supports the clamping shaft (5) to slide downward, the rack (301) supports the gear (502) to drive the clamping shaft (5) to rotate. The grooved wheel (501) pushes the top end of the wire (11) out of the meter body (2) and retracts into the insulating cylinder (6). The meter box (1) is equipped with a mounting frame (12). The front side of the mounting frame (12) is equipped with multiple sets of mounting frames (9) corresponding to the insulation protection components. Two adjusting blocks (8) are symmetrically arranged in the mounting frame (9). The two adjusting blocks (8) respectively fix and support the two slide rails (3) on the front side to move laterally. The adjusting block (8) is provided with a side groove (803) for a horizontal sliding fit mounting frame (9) on its outer side, and a horizontally extending bidirectional screw (10) is rotatably provided in the middle of the mounting frame (9). The adjusting block (8) has a threaded hole (802) through which the bidirectional screw (10) passes. The two ends of the bidirectional screw (10) inside the mounting frame (9) are provided with external threads (10b) with opposite directions of rotation, and the external threads (10b) are threadedly engaged with the threaded hole (802). A knob (10a) is fixed at the outer end of the bidirectional screw (10). The mounting frame (9) is provided with rotating seats (902) on both sides to support the rotation of the bidirectional screw (10), the mounting bracket (12) is densely covered with longitudinal through mounting holes (12a), and the mounting frame (9) is provided with fixing ears (901) with longitudinal through structure at the four corners. The slider (4) has an upwardly extending auxiliary curved arm (402) fixed on its front side. The insulating cylinder (6) has horizontally extending guide rods (601) fixed on both sides. The auxiliary curved arm (402) has a guide ear (403) fixed on its bottom side to accommodate the guide rod (601) through which it passes. The guide rod (601) and the guide ear (403) are in clearance fit.

2. The power metering box with an insulation protection mechanism according to claim 1, characterized in that: The slider (4) has a support shaft hole (401) through the middle to accommodate the clamping shaft (5) through which it passes. The slider (4) rotates with the clamping shaft (5) through the support shaft hole (401). A limiting rod (7) is fixed on the inner side of the slide rail (3) that runs vertically through the slider (4), and the limiting rod (7) is in clearance fit with the slider (4).

3. The power metering box with an insulation protection mechanism according to claim 2, characterized in that: The limiting rod (7) below the slider (4) is threaded with a limiting element (701) on its outer side.

4. The power metering box with an insulation protection mechanism according to claim 1, characterized in that: The adjusting block (8) has a longitudinally penetrating movable hole (801) on its front side. The slide rail (3) has a plurality of fixed holes (302) corresponding to the movable holes (801) distributed longitudinally. The plurality of fixed holes (302) are arranged vertically. Pull screws that fix and connect the movable holes (801) are inserted in the fixed holes (302).

5. The power metering box with an insulation protection mechanism according to claim 1, characterized in that: The meter box (1) includes a box body (101) for accommodating the meter body (2). The front side of the box body (101) is provided with a box cover (102) that can be opened, and an insulating back plate (103) is fixed on the rear side of the box body (101). The bottom front side of the meter body (2) is provided with multiple receiving slots (201) corresponding to the wire (11), and the bottom of the meter body (2) is provided with a wire hole (203) for accommodating the wire core (11a) at the top of the wire (11) to pass through.

6. The power metering box with an insulation protection mechanism according to claim 5, characterized in that: The receiving groove (201) is threaded with a wiring screw (202) that extends into the wire hole (203) at the rear end and abuts against the fixed wire core (11a). The front sides of the meter body (2) are provided with mounting and dismounting countersunk holes (204) for inserting screws to connect to the insulating back plate (103).

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