A high-precision metering box

Abstract

The invention discloses a high-precision metering box, which relates to the technical field of electric power equipment, comprising a box body, a meter installed inside the box body, a bottom plate connected to the bottom of the box body, an adjusting component assembled on the bottom of the bottom plate, and a plurality of clamping components installed inside the adjusting component, a fixing component connected between the adjusting component and the clamping component, when the wire is subjected to tension, a clamping block and an abutting block on the outer periphery of a rotating rod abut against each other to prevent the rotating rod from rotating, and because there is friction between the wire and the contact block, the contact block clamped with the wire will, under the action of the tension of the wire, drive a rotating sleeve rod connected to the rotating rod to rotate to a certain extent with the installation rod as the center of the circle, so that the two contact blocks will clamp the outer periphery of the wire as the wire is pulled down, and the greater the downward pulling force, the greater the clamping force, which can effectively prevent the wire from being separated from the wiring terminal due to external tension after installation, thereby ensuring the normal operation of the meter and improving its accuracy and precision.

Description

Technical Field

[0001] The invention relates to the technical field of electric power equipment, and in particular to a high-precision metering box. Background Art

[0002] As an indispensable part of the power system, the core function of the energy meter box is to accurately measure electricity and provide detailed and accurate electricity consumption data for users and management departments. It uses a special shell design to properly install the energy meter inside. The energy meter can accurately measure and record the energy consumption in different time periods, so that users can clearly understand their electricity consumption patterns, and then rationally plan electricity consumption, effectively control costs, and achieve the goal of energy conservation and emission reduction.

[0003] During the installation of an energy meter, a crucial step is to reliably connect the meter to external wires to ensure that the meter can work properly and accurately record energy data. However, the existing connection method usually involves connecting the wires of the energy meter to the inside of the meter box and then relying on the tightening action of the screws to fix the wires. Although this method seems simple and direct, there are many hidden dangers in actual application.

[0004] Specifically, after the wires are fixed with screws, if they are pulled by external force, the wires can easily separate from the terminal blocks, causing the electric energy metering equipment to fail to operate normally. In addition, even if the wires are not completely detached, the connection with the terminal blocks may become unstable after being pulled, thereby affecting the accuracy of the readings of the electric energy meter. This unstable connection may cause the electric energy meter to not move, move slowly, or move backwards, seriously interfering with the accuracy and precision of electricity metering. Summary of the invention

[0005] The purpose of the present invention is to solve the problem that after the wire is fixed by a screw, if it is pulled by an external force, the wire is easily separated from the terminal, resulting in the electric energy metering equipment being unable to operate normally. In addition, even if the wire is not completely detached, it may cause the connection with the terminal to become unstable after being pulled, thereby affecting the reading accuracy of the electric energy meter. This unstable connection may cause the electric energy meter to not move, move slowly or move backwards, seriously interfering with the accuracy and precision of electricity metering.

[0006] In order to achieve the above-mentioned object, the present invention adopts the following technical scheme: a high-precision metering box: comprising a box body, a meter is installed inside the box body, the bottom of the box body is connected to a bottom plate, and also comprises: an adjustment component assembled at the bottom of the bottom plate, and a plurality of clamping components installed inside the adjustment component, and a fixing component is connected between the adjustment component and the clamping component;

[0007] The clamping assembly comprises a connection block fixedly connected to the inside of the adjustment assembly, the inner wall of the connection block is fixedly connected to a mounting rod, the mounting rod is rotatably connected to a rotating sleeve rod through an external torsion spring, and the end of the rotating sleeve rod away from the mounting rod is rotatably connected to a guide member;

[0008] A limiting assembly is installed on one side of the rotating sleeve rod, and the limiting assembly includes a fixed sleeve fixedly connected to one side of the rotating sleeve rod, and a plurality of clamping blocks are fixedly connected to the outer periphery of the rotating rod, and the fixed sleeve abuts against the clamping blocks through an internal one-way piece;

[0009] The wire is passed into the box along the adjustment component. As the wire moves, it enters between the two guide pieces. The two guide pieces rotate with the push and friction of the wire to guide the movement of the wire. When the wire is subjected to tension, the guide piece stuck by the one-way piece rotates with the mounting rod as the center as the wire is pulled. At the same time, the wire is tightened by the mutual cooperation of the two guide pieces.

[0010] As a further description of the above technical solution:

[0011] The plurality of clamping components are arranged crosswise inside the adjusting component.

[0012] As a further description of the above technical solution:

[0013] The guide member comprises a rotating rod rotatably connected inside a rotating sleeve rod, the outer periphery of the rotating rod is connected with a contact block in contact with the wire through a clamping roller, and one end of the rotating rod passes through the rotating sleeve rod and is connected with a limiting block.

[0014] As a further description of the above technical solution:

[0015] The one-way member includes a plurality of fixing frames fixedly connected to the inside of the fixing sleeve, and a positioning rod is fixedly connected between the inner walls of each fixing frame, and the outer periphery of the positioning rod is rotatably connected to an abutment block in contact with the clamping block, and a spring sheet and a limiting plate that limits the rotation of the abutment block are connected between the inner walls of the fixing frames.

[0016] As a further description of the above technical solution:

[0017] The fixing assembly comprises two fixing rods fixedly connected to the top of the adjusting assembly, the outer peripheries of the two fixing rods are slidably connected with a lifting plate, the tops of the fixing rods are connected with a baffle, and the bottom of the lifting plate is connected with a limiting member.

[0018] As a further description of the above technical solution:

[0019] The limiting member includes a plurality of mounting frames fixedly connected to the bottom of the lifting plate, the inner wall of the mounting frame is rotatably connected to a connecting sleeve rod through a fixed column, a moving groove is provided on one side of the rotating sleeve rod, a moving block is slidably connected to the inner wall of the moving groove, an extension rod is connected to one side of the moving block, the extension rod is rotatably connected to the connecting sleeve rod, an opening is provided on the outer periphery of the one-way member, and a stopper slidably connected to the opening is connected to one side of the moving block.

[0020] As a further description of the above technical solution:

[0021] The adjustment assembly includes a fixed ring fixedly connected to the bottom of the base plate, a plurality of blocks are fixedly connected to the bottom of the fixed ring, a connecting piece is connected to the inside of the fixed ring through a rotating ring, a rotating piece is rotatably connected to the inside of the connecting piece through a center column, and a lifting piece is connected to the bottom of the base plate.

[0022] As a further description of the above technical solution:

[0023] The connecting member comprises a connecting pipe connected to the rotating ring, a plurality of sliding grooves are provided on the outer circumference of the connecting pipe, a fixing hole is provided on the outer circumference of the connecting pipe, and a fixing screw abutting against the rotating member is connected to the inner wall of the fixing hole.

[0024] As a further description of the above technical solution:

[0025] The rotating member includes a rotating sleeve block rotatably connected to the outer periphery of the central column, a mounting tube is connected to the bottom of the rotating sleeve block, threading holes are provided inside the mounting tube, the rotating sleeve block and the connecting tube, and an avoidance groove connected to the threading hole is provided outside the rotating sleeve block.

[0026] As a further description of the above technical solution:

[0027] The lifting member includes a fixed plate fixedly connected to the bottom of the base plate, the fixed plate is connected to a plurality of connecting rods through a rotating plate that is internally rotatably connected, the bottoms of the plurality of connecting rods are connected to a limiting plate, and the outer periphery of the connecting rod is slidably connected to the rotating plate, the outer periphery of the connecting rod is sleeved with a telescopic spring, the top of the rotating plate is fixedly connected to an embedded block that is clamped with a clamping block, and the inner ring of the rotating plate is connected to a sliding block that is slidably connected to a sliding groove.

[0028] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0029] When the wire enters the connecting tube and the installation tube, it will always be at the center of the two tubes under the guidance of the conical block. During the movement of the wire, it will pass through the gap between the two relative contact blocks. These contact blocks will drive the rotating sleeve rod to rotate with the installation rod as the center of the circle as the wire pushes, and squeeze the torsion spring. The squeezed torsion spring will react to push the rotating sleeve rod, so that the clamping roller always clamps the wire through the contact block. At the same time, the movement of the wire will drive the rotating rod connected to the clamping roller to rotate inside the rotating sleeve rod under the friction force of the contact block. The rotation of the two clamping rollers and the contact block further guides the movement of the wire, and the cooperation between the cross-staggered clamping components ensures that the wire always stays in the center of the connecting tube and the installation tube, and strengthens the clamping of the wire.

[0030] In addition, when the clamping roller drives the rotating rod to rotate, the clamping block on the outer periphery of the rotating rod will also rotate synchronously. During the rotation process, the clamping block will contact the abutment block and push it to rotate with the positioning rod as the center of the circle, while compressing the spring sheet. When the clamping block rotates out of contact with the abutment block, the spring sheet will rebound and push the abutment block to return to contact with the limiting plate.

[0031] When the wire is subjected to tension, the clamping block and the abutment block on the outer periphery of the rotating rod will abut against each other to prevent the rotating rod from rotating. Due to the friction between the wire and the contact block, the contact block clamped with the wire will drive the rotating sleeve rod connected to the rotating rod to rotate to a certain extent with the installation rod as the center under the tension of the wire. In this way, the two contact blocks will clamp the outer periphery of the wire as the wire is pulled down, and the greater the downward pulling force, the greater the clamping force. This can effectively prevent the wire from being separated from the wiring terminal due to external tension after installation, thereby ensuring the normal operation of the meter and improving its accuracy and precision.

[0032] In addition, in order to prevent the continuous pushing of the wires and causing them to accumulate in the box, the wires can be pushed to move a certain distance. The wires will bend in the space between the lifting plate and the top of the connecting tube, and push the lifting plate to move around the outer periphery of the fixed rod. The movement of the lifting plate will drive the fixed column connected to the mounting frame to move synchronously, thereby pulling the extension rod connected to the connecting sleeve rod to move. The movement of the extension rod will drive the moving block to move in the moving groove, and allow the stopper to enter the fixed sleeve along the opening to fix the clamping block. In this way, the clamping block cannot rotate regardless of whether it rotates forward or reverse, thereby preventing the wire clamped by the contact block from continuing to be pushed into the connecting tube. At the same time, when the bent wire is subjected to external tension, it can also avoid direct pulling on the wiring terminals of the meter. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 Shows a schematic diagram of the overall structure according to the present invention;

[0034] Figure 2 A schematic diagram of the connecting pipe structure according to the present invention is shown;

[0035] Figure 3 It is shown that according to the present invention Figure 2 Schematic diagram of the internal structure;

[0036] Figure 4 A schematic diagram of the structure of the regulating assembly according to the present invention is shown;

[0037] Figure 5 A schematic diagram of the mounting tube structure according to the present invention is shown;

[0038] Figure 6 A schematic diagram of the structure of the clamping assembly according to the present invention is shown;

[0039] Figure 7 A schematic diagram of the limiting block structure according to the present invention is shown;

[0040] Figure 8 A schematic diagram of the structure of the clamping roller according to the present invention is shown;

[0041] Fig. 9 A schematic diagram of the structure of a restriction assembly according to the present invention is shown;

[0042] Fig.10 A schematic structural diagram of a fixing assembly according to the present invention is shown.

[0043] Legend:

[0044] 10. Box; 11. Meter; 12. Bottom plate;

[0045] 20. Adjustment assembly; 21. Fixed plate; 211. Rotating plate; 212. Connecting rod; 213. Telescopic spring; 214. Rotating plate; 215. Limiting plate; 216. Embedded block; 217. Sliding block; 22. Fixed ring; 221. Block; 222. Rotating ring; 223. Connecting pipe; 224. Sliding groove; 225. Fixed hole; 226. Center column; 227. Fixing screw; 23. Rotating sleeve; 231. Avoidance groove; 232. Mounting pipe; 24. Threading port;

[0046] 30. Clamping assembly; 31. Connecting block; 311. Mounting rod; 312. Torsion spring; 313. Rotating sleeve rod; 32. Clamping roller; 321. Contact block; 322. Rotating rod; 323. Limiting block;

[0047] 40, limiting assembly; 41, clamping block; 42, fixing sleeve; 421, fixing frame; 422, positioning rod; 423, abutting block; 424, spring sheet; 425, limiting plate;

[0048] 50. Fixed assembly; 51. Opening; 511. Moving slot; 52. Fixed rod; 521. Baffle; 53. Lifting plate; 54. Mounting frame; 541. Fixed column; 542. Connecting sleeve rod; 543. Moving block; 544. Extension rod; 545. Baffle. DETAILED DESCRIPTION

[0049] 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.

[0050] like Figure 1-Figure 10 As shown, a high-precision metering box provided by the present invention comprises a box body 10, a meter 11 is installed inside the box body 10, a bottom plate 12 is connected to the bottom of the box body 10, and also comprises: an adjusting component 20 assembled at the bottom of the bottom plate 12, the adjusting component 20 comprises a fixing ring 22 fixedly connected to the bottom of the bottom plate 12, a plurality of blocks 221 are fixedly connected to the bottom of the fixing ring 22, a connecting piece is connected to the inside of the fixing ring 22 through a rotating ring 222, the connecting piece comprises a connecting pipe 223 connected to the rotating ring 222, a plurality of slide grooves 224 are provided on the outer periphery of the connecting pipe 223, a fixing hole 225 is provided on the outer periphery of the connecting pipe 223, a fixing screw 227 abutting against the rotating piece is connected to the inner wall of the fixing hole 225, a rotating piece is rotatably connected to the inside of the connecting piece through a central column 226, and the rotating piece comprises a rotating piece rotatably connected to the outer periphery of the central column 226 The movable sleeve block 23, the bottom of the rotating sleeve block 23 is connected with a mounting tube 232, the inside of the mounting tube 232, the rotating sleeve block 23 and the connecting tube 223 are all provided with threading holes 24, the outside of the rotating sleeve block 23 is provided with an avoidance groove 231 connected with the threading hole 24, the bottom of the bottom plate 12 is connected with a lifting member, the lifting member includes a fixed plate 21 fixedly connected to the bottom of the bottom plate 12, the fixed plate 21 is connected to a plurality of connecting rods 212 through a rotating plate 211 connected by internal rotation, the bottoms of the plurality of connecting rods 212 are all connected with a limiting plate 215, and the outer periphery of the connecting rod 212 is slidably connected with a rotating plate 214, the outer periphery of the connecting rod 212 is sleeved with a telescopic spring 213, the top of the rotating plate 214 is fixedly connected with an embedded block 216 clamped with the clamping block 221, and the inner ring of the rotating plate 214 is connected with a slider 217 slidably connected with the slide groove 224;

[0051] When the wire needs to be connected to the inside of the box 10, the wire will first enter along the threading opening 24 inside the installation tube 232, and then the wire will continue to move along the threading opening 24, enter the connection tube 223, and finally pass through the connection tube 223 to enter the inside of the box 10 and connect with the terminal of the meter 11;

[0052] In order to more flexibly access wires from different directions, the fixing screw 227 can be turned to release the tight state of the rotating sleeve 23. At this time, the mounting tube 232 can be pushed to drive the rotating sleeve 23 to rotate with the central column 226 as the center, so as to adjust the angle of the mounting tube 232. When the angle is adjusted to a suitable angle, the fixing screw 227 is tightened again to move along the fixing hole 225 and press against one side of the rotating sleeve 23, so as to complete the fixing of the mounting tube 232.

[0053] In addition, by controlling the angle between the mounting tube 232 and the connecting tube 223, it is possible to reduce the extrusion or stretching of the conductor and the insulation layer inside the wire when the wire is subjected to an excessively large bending angle, thereby avoiding the occurrence of damage;

[0054] In order to further facilitate the access of the wires, the rotating plate 214 can be pulled to make it descend along the outer periphery of the connecting rod 212, and drive the slider 217 to slide inside the slide groove 224. As the rotating plate 214 descends, the telescopic spring 213 will be in a stretched state, and at the same time, a plurality of embedded blocks 216 will be disengaged from the engagement with a plurality of clamping blocks 221. When the embedded blocks 216 are completely disengaged from the clamping blocks 221, the rotating plate 214 can be rotated to drive the rotating plate 211 connected to the connecting rod 212 to rotate inside the fixed plate 21. At the same time, as the rotating plate 214 rotates, the slider 217 will drive the rotating ring 222 connected to the connecting tube 223 to rotate inside the fixed ring 22. In this way, the direction of the threading port 24 of the inclined mounting tube 232 can be adjusted by rotating the rotating plate 214, so as to facilitate the threading of wires in different directions.

[0055] After adjusting the direction of the threading port 24 of the mounting tube 232, the rotating plate 214 can be loosened. At this time, the telescopic spring 213 will rebound and drive the rotating plate 214 to reset. As the rotating plate 214 resets, the plurality of embedded blocks 216 will be re-embedded into the plurality of clamping blocks 221, thereby completing the restriction on the rotation of the rotating plate 214 and ensuring the stability and reliability of the entire structure.

[0056] like Figure 1 , Figure 2 , Figure 3 , Figure 6 , Figure 7 , Figure 8As shown, as well as a plurality of clamping assemblies 30 installed inside the connecting tube 223 and the mounting tube 232, the plurality of clamping assemblies 30 are arranged in a cross-staggered manner inside the connecting tube 223 and the mounting tube 232, the connecting tube 223 and the mounting tube 232 are connected with conical blocks adjacent to the plurality of clamping assemblies 30, the clamping assembly 30 includes a connecting block 31 fixedly connected inside the connecting tube 223 and the mounting tube 232, the inner wall of the connecting block 31 is fixedly connected with a mounting rod 311, the mounting rod 311 is rotatably connected with a rotating sleeve rod 313 through an external torsion spring 312, and the end of the rotating sleeve rod 313 away from the mounting rod 311 is rotatably connected with a guide, the guide includes a rotating rod 322 rotatably connected inside the rotating sleeve rod 313, the outer periphery of the rotating rod 322 is connected with a contact block 321 in contact with the wire through a clamping roller 32, and one end of the rotating rod 322 passes through the rotating sleeve rod 313 and is connected with a limiting block 323;

[0057] When the wire enters the connection tube 223 and the installation tube 232, it will naturally remain at the center point of the connection tube 223 and the installation tube 232 along the guidance of the tapered block. As the wire moves inside the connection tube 223 and the installation tube 232, the wire will pass through the gap between the two opposite contact blocks 321. Under the action of the wire pushing, the contact block 321 will drive the rotating sleeve rod 313 to rotate with the installation rod 311 as the center of the circle and squeeze the torsion spring 312. The squeezed torsion spring 312 will exert its elastic force to push the rotating sleeve rod 313, so that the clamping roller 32 will always keep the wire clamped through the contact block 321.

[0058] At the same time, the movement of the wire will also drive the rotating rod 322 connected to the clamping roller 32 to rotate inside the rotating sleeve rod 313 under the action of the friction force generated by the contact block 321. This rotation not only further guides the movement of the wire, but also ensures that the wire always remains at the center position of the connecting tube 223 and the mounting tube 232 through the coordinated rotation of the two clamping rollers 32 and the contact block 321.

[0059] In addition, the close fit between the cross-staggered arrangement of the clamping components 30 not only further enhances the clamping effect on the wire, but also ensures the stability and accuracy of the wire during the entire movement process.

[0060] like Figure 1 , Figure 2 , Figure 3 , Figure 6 , Figure 8 , Fig. 9As shown, a limiting assembly 40 is installed on one side of the rotating sleeve rod 313, and the limiting assembly 40 includes a fixed sleeve 42 fixedly connected to one side of the rotating sleeve rod 313, and a plurality of clamping blocks 41 are fixedly connected to the outer periphery of the rotating rod 322. The fixed sleeve 42 abuts against the clamping block 41 through an internal one-way member, and the one-way member includes a plurality of fixing frames 421 fixedly connected to the inside of the fixed sleeve 42, and a positioning rod 422 is fixedly connected between the inner walls of each fixing frame 421, and the outer periphery of the positioning rod 422 is rotatably connected to an abutting block 423 in contact with the clamping block 41, and a spring sheet 424 and a limiting plate 425 for limiting the rotation of the abutting block 423 are connected between the inner walls of the fixing frames 421.

[0061] When the clamping roller 32 drives the rotating rod 322 to rotate, the multiple clamping blocks 41 located on the outer periphery of the rotating rod 322 will also rotate synchronously. During the rotation process, these clamping blocks 41 will come into contact with the abutting blocks 423, thereby pushing the abutting blocks 423 to rotate around the positioning rod 422 as the center of the circle, and in this process, the spring sheet 424 is compressed. Once the clamping block 41 rotates to a position where it no longer contacts the abutting block 423, the compressed spring sheet 424 will rebound using its elasticity, pushing the abutting block 423 to return to its original position until it contacts the limiting plate 425 again.

[0062] When the wire is subjected to tension, the clamping block 41 on the outer periphery of the rotating rod 322 will tightly abut against the abutment block 423, thereby effectively preventing the rotating rod 322 from rotating further. Due to the friction between the wire and the contact block 321, when the wire is subjected to downward tension, the contact block 321 tightly clamped with the wire will, under the action of the tension, drive the rotating rod 322 and the rotating sleeve rod 313 connected thereto to rotate to a certain extent with the installation rod 311 as the center of the circle. In this way, the two contact blocks 321 will clamp the outer periphery of the wire more tightly as the wire is pulled downward. The greater the downward pulling force on the wire, the greater the clamping force of the contact block 321 on the wire. This effectively prevents the wire from being separated from the terminal due to external tension after installation, thereby ensuring that the meter 11 can operate normally while improving its accuracy and precision.

[0063] like Figure 1 , Figure 2 , Figure 3 , Figure 6 , Fig. 9 , Fig.10As shown, a fixing assembly 50 is connected between the connecting tube 223 and the rotating sleeve rod 313, and the fixing assembly 50 includes two fixing rods 52 fixedly connected to the top of the connecting tube 223, and the outer periphery of the two fixing rods 52 is slidably connected to the lifting plate 53, and the top of the fixing rods 52 is connected to the baffle plate 521, and the bottom of the lifting plate 53 is connected to a limiting member, and the limiting member includes a plurality of mounting frames 54 fixedly connected to the bottom of the lifting plate 53, and the inner wall of the mounting frame 54 is rotatably connected to the connecting sleeve rod 542 through a fixing column 541, and a moving groove 511 is provided on one side of the rotating sleeve rod 313, and a moving block 543 is slidably connected to the inner wall of the moving groove 511, and an extension rod 544 is connected to one side of the moving block 543, and the extension rod 544 is rotatably connected to the connecting sleeve rod 542, and an opening 51 is provided on the outer periphery of the fixing sleeve 42, and a stopper 545 slidably connected to the opening 51 is connected to one side of the moving block 543;

[0064] After the wire is fixed to the terminal block, in order to prevent the wire from being piled up inside the box 10 due to continuous pushing, the wire needs to be pushed to move a certain distance. During this process, the wire will bend in the space between the lifting plate 53 and the top of the connecting tube 223. The bent wire will push the lifting plate 53 to move along the outer circumference of the fixing rod 52 to a certain extent.

[0065] As the lifting plate 53 moves, it drives the mounting frame 54 connected thereto and the fixing column 541 on the mounting frame 54 to move synchronously. The movement of the fixing column 541 further pulls the extension rod 544 connected to the connecting sleeve rod 542 to move together. The movement of the extension rod 544 drives the moving block 543 to slide in the moving groove 511.

[0066] At the same time, as the moving block 543 moves, it will drive the stopper 545 to smoothly enter the fixed sleeve 42 along the opening 51. At this position, the stopper 545 will effectively fix the clamping block 41 to ensure that the clamping block 41 cannot rotate regardless of whether it is forward or reverse. In this way, the wire clamped by the contact block 321 cannot continue to be pushed into the connecting tube 223.

[0067] In addition, when the bent wire is subjected to external tension, this design can effectively prevent the tension from directly acting on the wiring terminals of the meter 11, thereby protecting the safety of the wiring terminals.

[0068] Working principle: When the wire passes through the connecting tube 223 and the mounting tube 232, the conical block guides it to stay in the center position. When the wire moves, it passes through the gap between the two relative contact blocks 321, pushes the contact block 321, and then drives the rotating sleeve rod 313 to rotate around the mounting rod 311 and compresses the torsion spring 312. The reaction force of the torsion spring 312 makes the clamping roller 32 and the contact block 321 connected to it always clamp the wire. At the same time, the movement of the wire also drives the rotating rod 322 connected to the clamping roller 32 to rotate in the rotating sleeve rod 313, further guiding the wire to stay in the center. The cross-staggered clamping assembly 30 ensures that the wire is stably centered and enhances the clamping of the wire.

[0069] When the rotating rod 322 rotates, the clamping block 41 on its outer periphery also rotates, contacts the abutting block 423 and pushes it to rotate around the positioning rod 422, compressing the spring sheet 424. When the clamping block 41 separates from the abutting block 423, the spring sheet 424 rebounds and pushes the abutting block 423 to reset.

[0070] If the wire is subjected to tension, the clamping block 41 and the abutment block 423 abut against each other, preventing the rotating rod 322 from rotating. The friction between the wire and the contact block 321 causes the contact block 321 to drive the rotating sleeve rod 313 to rotate under the action of the tension, thereby causing the two contact blocks 321 to clamp the wire more tightly. The greater the tension on the wire, the stronger the clamping force, preventing the wire from separating from the terminal, ensuring the normal operation of the meter 11 and improving its accuracy.

[0071] After the wires are fixed to the terminal blocks, in order to prevent the wires from piling up, the wires are pushed a certain distance further so that they bend between the lifting plate 53 and the top of the connecting tube 223. The bent wires push the lifting plate 53 to move, thereby driving the mounting frame 54, the fixing column 541, the connecting sleeve 542 and the extension rod 544 to move. The movement of the extension rod 544 drives the moving block 543 to move in the moving groove 511, and causes the stopper 545 to enter the fixing sleeve 42, fixing the clamping block 41 to prevent it from rotating. In this way, the wires clamped by the contact block 321 cannot be pushed further into the connecting tube 223. At the same time, the bent wires will not directly pull the terminal blocks of the meter 11 when subjected to external tension.

[0072] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A high-precision metering box, comprising a box body (10), a meter (11) installed inside the box body (10), and a bottom plate (12) connected to the bottom of the box body (10), characterized in that: Also includes: An adjusting component (20) mounted on the bottom of the base plate (12), and a plurality of clamping components (30) mounted inside the adjusting component (20), wherein a fixing component (50) is connected between the adjusting component (20) and the clamping component (30); The clamping assembly (30) comprises a connection block (31) fixedly connected to the inside of the adjustment assembly (20); a mounting rod (311) is fixedly connected to the inner wall of the connection block (31); the mounting rod (311) is rotatably connected to a rotating sleeve rod (313) via an external torsion spring (312); and one end of the rotating sleeve rod (313) away from the mounting rod (311) is rotatably connected to a guide member; A limiting assembly (40) is installed on one side of the rotating sleeve rod (313), and the limiting assembly (40) comprises a fixed sleeve (42) fixedly connected to one side of the rotating sleeve rod (313); a plurality of clamping blocks (41) are fixedly connected to the outer periphery of the rotating rod (322); and the fixed sleeve (42) abuts against the clamping blocks (41) via an internal one-way piece; The wire is passed through the adjusting assembly (20) into the box (10). As the wire moves, it enters between the two guide members. The two guide members rotate with the pushing friction of the wire to guide the wire to move. When the wire receives a pulling force, the guide member clamped by the one-way member rotates with the installation rod (311) as the center of the circle as the wire is pulled. At the same time, the two guide members cooperate with each other to tighten the wire. The adjustment assembly (20) comprises a fixing ring (22) fixedly connected to the bottom of the base plate (12); a plurality of clamping blocks (221) are fixedly connected to the bottom of the fixing ring (22); a connecting piece is connected to the inside of the fixing ring (22) via a rotating ring (222); a rotating piece is rotatably connected to the inside of the connecting piece via a central column (226); and a lifting piece is connected to the bottom of the base plate (12); The connecting member comprises a connecting tube (223) connected to the rotating ring (222); a plurality of sliding grooves (224) are provided on the outer circumference of the connecting tube (223); a fixing hole (225) is provided on the outer circumference of the connecting tube (223); and a fixing screw (227) abutting against the rotating member is connected to the inner wall of the fixing hole (225); The rotating member comprises a rotating sleeve (23) rotatably connected to the outer periphery of a central column (226); a mounting tube (232) is connected to the bottom of the rotating sleeve (23); a threading opening (24) is provided inside the mounting tube (232), the rotating sleeve (23) and the connecting tube (223); and an avoidance groove (231) communicating with the threading opening (24) is provided outside the rotating sleeve (23); The lifting member comprises a fixed plate (21) fixedly connected to the bottom of the base plate (12); the fixed plate (21) is connected to a plurality of connecting rods (212) via a rotating plate (211) that is internally rotatably connected; the bottoms of the plurality of connecting rods (212) are all connected to a limiting plate (215); the outer periphery of the connecting rods (212) is slidably connected to a rotating plate (214); the outer periphery of the connecting rods (212) is sleeved with a telescopic spring (213); the top of the rotating plate (214) is fixedly connected to an embedded block (216) that is clamped to a clamping block (221); and the inner ring of the rotating plate (214) is connected to a sliding block (217) that is slidably connected to a sliding groove (224).

2. A high-precision metering box according to claim 1, characterized in that: The plurality of clamping assemblies (30) are arranged in a cross-staggered manner inside the adjustment assembly (20).

3. A high-precision metering box according to claim 1, characterized in that: The guide member comprises a rotating rod (322) rotatably connected to the inside of a rotating sleeve rod (313); the outer periphery of the rotating rod (322) is connected to a contact block (321) in contact with the wire via a clamping roller (32); one end of the rotating rod (322) passes through the rotating sleeve rod (313) and is connected to a limiting block (323).

4. A high-precision metering box according to claim 1, characterized in that: The one-way member comprises a plurality of fixing frames (421) fixedly connected to the inside of a fixing sleeve (42), and a positioning rod (422) is fixedly connected between the inner walls of each fixing frame (421), an abutment block (423) in contact with the clamping block (41) is rotatably connected to the outer periphery of the positioning rod (422), and a spring sheet (424) and a limiting plate (425) for limiting the rotation of the abutment block (423) are connected between the inner walls of the fixing frames (421).

5. A high-precision metering box according to claim 1, characterized in that: The fixing assembly (50) comprises two fixing rods (52) fixedly connected to the top of the adjusting assembly (20), the outer peripheries of the two fixing rods (52) being slidably connected to a lifting plate (53), the tops of the fixing rods (52) being connected to a baffle (521), and the bottoms of the lifting plates (53) being connected to a limiting member.

6. A high-precision metering box according to claim 5, characterized in that: The limiting member comprises a plurality of mounting frames (54) fixedly connected to the bottom of the lifting plate (53); the inner wall of the mounting frame (54) is rotatably connected to a connecting sleeve rod (542) via a fixed column (541); a moving groove (511) is provided on one side of the rotating sleeve rod (313); a moving block (543) is slidably connected to the inner wall of the moving groove (511); an extension rod (544) is connected to one side of the moving block (543); the extension rod (544) and the connecting sleeve rod (542) are rotatably connected; an opening (51) is provided on the outer periphery of the one-way member; and a stopper (545) slidably connected to the opening (51) is connected to one side of the moving block (543).

Images