CN210029613U

CN210029613U - Net twine measurement is cut off and is deposited case

Info

Publication number: CN210029613U
Application number: CN201920559750.0U
Authority: CN
Inventors: 黄科
Original assignee: Sichuan Hengfeng Huacheng Technology Co Ltd
Current assignee: Sichuan Hengfeng Huacheng Technology Co Ltd
Priority date: 2019-04-23
Filing date: 2019-04-23
Publication date: 2020-02-07
Anticipated expiration: 2029-04-23

Abstract

The utility model discloses a net wire metering, cutting and storing box, belonging to the technical field of communication engineering equipment, comprising an outer box body, an inner box body and a box cover which can open and cover the outer box body; an outgoing line hole is formed in the wall of the outer box body; an inner wire outlet hole is formed in the wall of the inner box body; a meter and a clamping device are arranged between the outgoing line hole and the inner outgoing line hole; a cutting device is arranged on the outer wall of the outer box body at the outer wire outlet; a controller and a power supply are arranged in the outer box body; an input keyboard, a display screen and a power switch are arranged on the outer wall of the outer box body; the controller is respectively connected with the gauge, the clamping device, the input keyboard and the display screen; the power supply is connected with each electric element through a power switch respectively. The length of taking the net twine can be directly displayed, and fixed-length thread taking can be realized.

Description

Net twine measurement is cut off and is deposited case

Technical Field

The utility model relates to a cable storage device, concretely relates to net twine measurement cuts off deposits case belongs to communication engineering equipment technical field.

Background

With the advent of the information age, signal wires such as network wires and optical fibers are increasingly widely used. In daily life, wires such as net wires and the like are usually packaged simply by using common cartons, plastic films and the like when being delivered from a factory, and are very inconvenient to store after being unsealed, particularly when being used on a construction site. Chinese patent CN201820685948.9 discloses an integrative device of intercepting is deposited to communication engineering net twine, the on-line screen storage device comprises a base, base top fixedly connected with support, the support top is connected with the box, box one side articulates there is the case lid, the box middle part is rotated and is connected with the pivot, pivot outside fixedly connected with sleeve, pivot one end is connected with the crank, the device of tailorring is installed to box below one side, the device of tailorring is including box body and connecting rod, the connecting rod runs through respectively in the box body both ends, connecting rod swing joint is in the box body. Make the pivot rotate through rotating the crank and drive the sleeve and rotate, realize receiving and releasing of net twine, the net twine passes open slot and feed inlet, if needs the intercepting one-hand and presses the clamp plate, and the blade between the clamp plate is in the compression state to net twine cutting disconnection under the pressure effect, and the spring is in compression state this moment, loosens the hand after the disconnection and gets rid of the pressure for the clamp plate, and the blade restores to the original position under the effect of spring elasticity. Although this patent solves the problem of storing the net cord, the length of the net cord that the user pulls out from the device each time cannot be determined intuitively in use, and manual measurement by means of a tape measure or the like is necessary, which increases the workload.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a net twine measurement cuts off deposits case, through the cooperation of counter and controller, can calculate at every turn from the net twine length data that the incasement was pulled out and show the result on the display screen, the user need not to measure alone alright know the net twine length outside the case that has been pulled out directly perceivedly again. On the basis, the input keyboard and the clamping device are added, so that fixed-length wire taking (taking the network cables according to the predetermined length data) is realized, and the work that the wires need to be taken up again when the network cables taken out during autonomous wire taking exceed the required using amount is reduced.

The utility model discloses a following technical scheme realizes: a net wire metering, cutting and storing box comprises an outer box body, an inner box body arranged in the outer box body and a box cover capable of opening and closing the outer box body; an outgoing line hole is formed in the wall of the outer box body; an inner wire outlet hole is formed in the wall of the inner box body; a gauge for measuring the length of the net cable is arranged in the outer box body; a clamping device capable of locking the net wires from being pulled is arranged in the outer box body; a cutting device is arranged on the wall of the outer box body at the position of the outer wire outlet; a controller and a power supply are arranged in the outer box body; an input keyboard, a display screen and a power switch are arranged on the wall of the outer box body; the controller is respectively connected with the gauge, the clamping device, the input keyboard and the display screen. Through the cooperation of counter and controller, realize the measurement and the demonstration to the net twine length (being equal to the net twine length of pulling out the box from the line hole of going out) through the counter, let the user can directly perceivedly confirm the net twine length of being pulled out from the line hole of going out, reuse the cutting device who fixes on the outer box body wall and cut the net twine, the user need not to carry out artifical the measurement to the net twine again alone, has reduced work load. When the user needs to take the cable with a fixed length, the user inputs the length data of the cable to be taken out in advance through the input keyboard, the input keyboard transmits the length data to the controller, the controller compares the data transmitted by the input keyboard with the length data of the taken out cable, and after the comparison is consistent, the controller starts the clamping device to lock and clamp the cable, so that the cable cannot be pulled continuously. At this time, the user cuts the net thread by the cutting device, and the fixed-length taking of the net thread is realized. When the fixed-length wire is taken, the user does not need to keep paying attention to the numbers on the display screen without taking out excessive network cables, and the labor intensity of the user is further reduced.

Furthermore, the meter comprises a roller driven by a network cable to rotate in the outer box body, a magnetic block arranged on the roller and a Hall sensor arranged on one side of the roller; the Hall sensor is connected with the controller; the controller is a single chip microcomputer.

Still further, the clamping device comprises a steering engine and a clamp, wherein the steering engine is arranged in the outer box body and connected with the controller, and the clamp is connected to a shaft of the steering engine; the clamp can lock the net wire from being pulled by matching with the wall of the outer box body.

Still further, the singlechip is of a model AT89C 52.

Still further, the steering engine is MG90 digital steering engine.

Still further, the power source includes a dry battery pack.

Still further, a roller shaft capable of rotating is arranged at the middle shaft of the inner box body; one end of the roll shaft penetrates out of the outer box body and then is connected with a crank.

Still further, the net wire metering, cutting and storing box comprises an outer box body, an inner box body arranged in the outer box body and a box cover capable of opening and closing the inner box body; a closed space is formed between the outer box body and the inner box body; an outgoing line hole is formed in the wall of the outer box body; an inner wire outlet hole is formed in the wall of the inner box body; a gauge for measuring the length of the net cable is arranged in the outer box body; a clamping device capable of locking the net wires from being pulled is arranged in the outer box body; a cutting device is arranged on the wall of the outer box body at the position of the outer wire outlet; a controller and a power supply are arranged in the outer box body; an input keyboard, a display screen and a power switch are arranged on the wall of the outer box body; the controller is respectively connected with the gauge, the clamping device, the input keyboard and the display screen.

Compared with the prior art, the utility model, following advantage and beneficial effect have:

(1) the scheme that the meter and the controller are matched with the display is adopted, the length of the net cable pulled out of the box at each time can be visually displayed, a user does not need to separately measure and then measure the length of the net cable, and the workload of the user is reduced. And on this basis, add input keyboard and clamping device, restrict the net twine length that can be pulled out in advance, reach the purpose of fixed length wire-taking, avoid appearing pulling out the condition that the line needs to receive again after the net twine more, reduce the work that produces from this and fall the effect, further improve work efficiency.

(2) The counter is composed of the Hall sensor, the roller and the magnetic block, the function of calculating the length of the network cable is realized by matching the single chip microcomputer, the structure is simple, the manufacturing cost is low, the stability is high, and the technology is mature.

(3) The steering engine is matched with the clamp to realize a clamping function, and the steering engine clamping device is simple in structure, mature in technology and easy to realize.

(4) The AT89C52 type single chip microcomputer is mature in technology and is widely applied to various fields such as oiling machines, taximeters and the like.

(5) By adopting the MG90 digital steering engine, the reaction speed is faster compared with that of a simulation steering engine, the torque is larger, the locking and clamping effects are better, and the misoperation is reduced.

(6) Compared with the scheme of adopting an external commercial power, the scheme of the dry battery pack enables the storage box to be more convenient to carry and use.

(7) Set up the roller in the box and connect the crank on the roller, can rotate the roller through the crank, with the net twine around rolling up on the roller, make things convenient for faster packing into of net twine and retrieve.

(8) The box cover which can only open and cover the inner box body is adopted, and the part between the inner box body and the outer box body is a closed scheme, so that the electric elements in the outer box body can be better protected while the wires are conveniently installed.

Drawings

FIG. 1 is a block diagram of the present invention;

FIG. 2 is a perspective view of the embodiment 2;

FIG. 3 is a schematic circuit diagram according to embodiment 2;

fig. 4 is a structural view of the meter 3;

fig. 5 is a diagram of the operation of the clamping device 4;

FIG. 6 is a perspective view of a jig 43 in embodiment 2;

fig. 7 is a perspective view of the cutting device 5;

FIG. 8 is a perspective view of embodiment 3;

FIG. 9 is a perspective view of embodiment 4;

wherein, 1-outer box body; 10, a box cover; 11-outgoing line hole; 12-a base plate; 2, an inner box body; 21-inner outlet hole; 22-roll shaft; 23-a crank; 3, a meter; 31-a roller; 32-magnetic sheet; 33-a hall sensor; 4-a clamping device; 41-a steering engine; 42-rudder machine axis; 43-a clamp; 431-clamp crossbar; 5-a cutting device; 50-a housing; 51-a pressure bar; 52-a blade; 53-a spring; 54-a vertical rod; 6, a controller; 7-input keyboard; 8, a display screen; 9-a power supply; 91-power switch; 101-network cable.

Detailed Description

Example 1:

referring to fig. 1 and 2, a net twine metering, cutting and storing box includes an outer box 1, an inner box 2 disposed in the outer box 1, and a box cover 10 capable of opening and closing the outer box 1; an outgoing line hole 11 is formed in the wall of the outer box body 1; an inner wire outlet hole 21 is formed in the wall of the inner box body 2; a meter 3 for measuring the length of the network cable 101 is arranged in the outer box body 1; a clamping device 4 capable of locking the net wire 101 from being pulled is arranged in the outer box body 1; a cutting device 5 is arranged on the wall of the outer box body 1 at the position of the outgoing line hole 11; a controller 6 and a power supply 9 are arranged in the outer box body 1; an input keyboard 7, a display screen 8 and a power switch 91 are arranged on the wall of the outer box body 1; the controller 6 is connected to the scale 3, the clamping device 4, the input keyboard 7 and the display screen 8, respectively. The power supply 9 is connected to the meter 3, the clamp 4, the input keyboard 7, and the display screen 8 via the power switch 91. The connection mode between the electric elements can be a wire connection mode or a prior art mode such as a printed circuit mode according to actual needs. In the embodiment, the cutting device 5 is fixed on the wall of the outer box 1, which is a preferable scheme, and in fig. 2, the cutting device 5 is drawn separately for the sake of drawing clarity, but in the embodiment, the cutting device 5 is actually fixed on the wall of the outer box 1. The utility model discloses also can choose for use cutting device 5 and outer 1 wall of box for dismantling mode such as being connected as required when implementing.

The specific working process is as follows: before use, a user opens the box cover 10, winds the net 101 into the inner box 2, and sequentially passes the net 101 through the inner wire outlet 21 formed in the wall of the inner box 2 and the outer wire outlet 11 formed in the wall of the outer box 1. Due to the restraining effect of the outgoing line hole 11 and the inner outgoing line hole 21 on the mesh 101, the mesh 101 must pass through the gauge 3 and the clamping device 4 on the connecting line of the outgoing line hole 11 and the inner outgoing line hole 21 after passing out of the inner outgoing line hole 21, and then pass out of the outer box body 1 through the outgoing line hole 11. After the net cables 101 are loaded, the box cover 10 is closed.

In use, the user pulls the wire 101 out of the outgoing line hole 11, the meter 3 meters the wire 101 passing thereunder during pulling the wire 101, and transmits a corresponding signal to the controller 6. The controller 6 transmits the length result (depending on the type of the gauge 3, it may be necessary for the controller 6 to perform calculation processing on the signal transmitted from the gauge 3) to the display screen 8 connected thereto, and the display screen 8 displays the length data of the string 101 passing through the gauge 3 (equal to the string 101 pulled out of the outer case 1). The user determines whether or not to pull out the wire 101 continuously based on the number displayed on the display screen 8, and when the wire 101 is pulled out to a length required by the user, the pulling is stopped and the wire 101 is cut by the cutting device 5. When the next wire taking is needed, all the electrical elements such as the controller 6, the meter 3, the display screen 8 and the like can be turned off and turned on again through the power switch 91 to clear the data, and then the operations are repeated.

When the user needs to take out the fixed length cable, the user firstly uses the input keyboard 7 to input the length data of the cable 101 which needs to be taken out, and the input keyboard 7 transmits the signal to the controller 6. The user pulls out the wire 101 from the outgoing line hole 11, and the meter 3 meters the wire 101 passing thereunder and transmits a corresponding signal to the controller 6. The controller 6 (the controller 6 may need to process and calculate the signal transmitted from the meter 3 according to the sensor selected by the meter 3) compares the length result with the data transmitted from the input keyboard 7, and when the length result is consistent with the data, the clamping device 4 is started to clamp and lock the network cable 101, so that the user can not pull out the network cable 101 from the outgoing line hole 11 any more. Meanwhile, the controller 6 transmits the length information to the display screen 8, so that the user can check the length of the net twine 101 conveniently. After checking that the length is correct, the user cuts the wire 101 by the cutting device 5. If the fixed-length wire taking is required to be carried out continuously, the controller 6, the meter 3, the display screen 8, the clamping device 4, the input keyboard 7 and other electrical elements can be turned off and turned on again through the power switch 91, the data can be cleared, and then the operations are repeated.

Example 2:

referring to FIGS. 1 to 7, in addition to the embodiment 1, the outer case 1 is a PP plastic case of 500mm × 600mm × 150 mm; a box cover 10 made of PP plastic is hinged with the outer box 1 through a hinge and locked with the outer box 1 through a lock catch; the inner box body 2 is circular with the diameter of 500mm and is also made of PP plastic; an outgoing line hole 11 is arranged on the wall of the outer box body 1; an inner wire outlet hole 21 is arranged on the wall of the inner box body 2; the hole diameters of the outgoing line hole 11 and the internal outgoing line hole 21 are 15mm (the hole diameters are suitable for most weak current wires such as twisted pair wires).

The meter 3 (as shown in fig. 4) comprises a roller 31 which is arranged in the outer box body 1 and is driven by a net wire 101 to rotate and is made of PP material with the diameter of 35mm and is positioned on a connecting line of the outgoing line hole 11 and the internal outgoing line hole 21, a magnetic sheet 32 which is pasted on one side of the roller 31 and is made of neodymium magnet, and a Hall sensor 33; the Hall sensor 33 is connected with the controller 6; the mesh 101 passes through between the roller 31 and the wall of the outer box 1 (the bottom plate 12 in fig. 1 in this embodiment).

The clamping device 4 comprises a steering engine 41 connected with the controller 6 in the outer box body 1 and a clamp 43 connected with a steering engine shaft 42, and the steering engine 41 is connected with the controller 6; the clamp 43 is matched with the wall of the outer box body 1 (in the embodiment, the bottom plate 12 in fig. 1) to lock the net wire 101 without pulling the clamp 43, an L-shaped clamp made of PP material as shown in fig. 6 is selected as the clamp 43, and the clamp cross rod 431 of the clamp 43 is located on the connection line of the outgoing line hole 11 and the internal outgoing line hole 21. The mesh 101 passes through between the clamp rail 431 and the wall of the outer case 1 (the bottom plate 12 in fig. 1 in this embodiment). It should be noted that, in the present invention (including the claims, the specification, etc.), the wall of the outer box 1 includes all six faces of the outer box 1, not only four sides of the outer box 1 in the drawings, but also the top plate and the bottom plate in the drawings.

The power supply 9 is a battery pack consisting of four dry batteries;

the cutting device 5 (as shown in fig. 7) comprises a shell 50, a pressure rod 51 above the shell 50, and a vertical rod 54 with one end connected with the pressure rod 51, wherein the other end of the vertical rod 54 penetrates through the shell 50 and is connected with a blade 52 in the shell 50, and a spring 53 penetrates through the part of the vertical rod 54 between the pressure rod 51 and the shell 50.

The controller 6 adopts an AT89C52 singlechip, the Hall sensor adopts an A3144 Hall sensor, the model MG90 digital steering engine is adopted as the steering engine, the clamp 43 adopts an L-shaped (as shown in figure 6) clamp made of PP material, the display screen 8 adopts an LCD1602 liquid crystal display, and the input keyboard 7 adopts A3 multiplied by 4 matrix keyboard.

Parts such as outer box 1, interior box 2, gyro wheel 31 are the preferred scheme for the preparation of PP material for use in this embodiment, the utility model discloses also can adopt materials such as PVC among other prior art during concrete implementation, gyro wheel 31 must adopt non-magnetic material. The selection of each electrical component such as controller 6, counter 3, clamping device 4, display screen 8, input keyboard 7, power 9 in this embodiment is also only a preferred scheme, the utility model discloses a scheme among other prior art also can be selected in the concrete implementation, only need satisfy corresponding function can. For clarity of drawing, the cutting device 5 is drawn separately in fig. 2, but in this embodiment, the cutting device 5 is fixed on the wall of the outer box 1.

The specific working process is as follows: the basic operation of this embodiment is the same as that of embodiment 1, and the following is a description of the operation of the gauge 3, the clamping means 4 and the cutting means 9.

Specific working process of the meter 3: the net thread 101 passes through between the roller 31 of the gauge 3 and the wall of the outer box 1 (in this embodiment, the bottom plate 12 in fig. 1), the roller 31 functions like a pinch roller, when the net thread 101 is pulled out by a user, the roller 31 applies a certain pressure to the net thread 101 passing below the roller, and due to the friction between the roller and the net thread, the roller 31 is driven to rotate when the net thread 101 is pulled. The rotation of the roller 31 drives the magnetic sheet 32 attached thereto to rotate. The magnetic sheet 32 is continuously moved toward and away from the hall sensor during the rotation, and when the magnetic sheet 32 and the hall sensor 33 meet each other (i.e., are AT the closest distance), the hall sensor 33 detects a signal and transmits the signal to the controller 6 (AT 89C52 mcu) to cause the controller 6 (AT 89C52 mcu) to interrupt, generate a pulse signal, and the pulses are counted (i.e., the number of rotations of the wheel 31) by the controller 6 (AT 89C52 mcu). The controller 6 (AT 89C52 single chip microcomputer) calculates the length of the rotating wire of the roller 32 (equal to the length of the net wire 101 passing through the meter 3) by using the pulse counting result and the circumference of the roller 32. The controller 6 (AT 89C52 single chip microcomputer) transmits the length information to the display screen 8, and the length data is displayed through the display screen 8.

The specific working process of the clamping device 4 is as follows: the controller 6 (AT 89C52 single chip microcomputer) compares the calculated length result of the taken out network cable this time with the network cable length data required to be taken, which is transmitted from the input keyboard 7, and when the comparison result is consistent, the controller 6 (AT 89C52 single chip microcomputer) starts the steering engine 41 in the clamping device 4, so that the steering engine shaft 42 rotates by 90 degrees (counterclockwise in fig. 5) to turn the L-shaped clamp 43 from the horizontal state to the vertical state (i.e. from the left state to the right state in fig. 5), because the network cable 101 passes through between the clamp cross rod 431 and the wall of the outer box 1 (in this embodiment, the bottom plate 12 in fig. 1), when the L-shaped clamp 43 rotates to the vertical state, the cross rod 431 of the L-shaped clamp 43 and the wall of the outer box 1 (in this embodiment, the bottom plate 12 in fig. 1) cooperate to clamp and lock the network cable 101, so that the network cable 101 cannot be pulled out continuously.

The specific working process of the cutting device 9: when the net wire 101 needs to be cut off, a user presses the pressing rod 51, the pressing rod 51 pushes the vertical rod 54 and the blade 52 to move downwards, the net wire 101 is cut off, the spring 53 is in a compressed state, after the net wire is cut off, the user releases the hand to remove the pressure applied to the pressing rod 51, and the pressing rod 51, the vertical rod 54 and the blade 52 are restored to the original positions under the action of the elastic force of the spring 53. The casing 50 of the cutting device 9 in this embodiment is not a closed space, and there is no wall plate in the outgoing direction (left-right direction in fig. 1) of the network cable 101, which simplifies the structure and facilitates the network cable access. If the possibility of being scratched by the blade 52 is reduced for increasing safety, a wall plate can be added on the basis of the embodiment, and holes are formed in the wall plate to facilitate the outgoing of the network cable 101. The cutting device 9 may also be in other prior art forms, such as a cutting nipper or a cutting device in CN 201820685948.9.

Example 3:

referring to fig. 1 and 8, on the basis of embodiment 1, a roller 22 capable of rotating is arranged on the central axis of the inner box 2 in this embodiment; one end of the roll shaft 22 penetrates out of the outer box body 1 and is connected with a crank 23. The added roller shaft 22 and the crank 23 can rotate the roller shaft 22 through the crank 23 when the storage box needs to be filled with a new net wire 101 or store the net wire 101 which is pulled out more, so that the net wire 101 is wound on the roller shaft 22, the working efficiency is improved, and the winding problem of the net wire 101 during wire filling or wire winding is reduced. For clarity of drawing, the cutting device 5 is drawn separately in fig. 8, but in this embodiment, the cutting device 5 is actually fixed to the wall of the outer box 1.

Example 4:

as shown in fig. 9, the principle of embodiment 1 is basically the same, but the present embodiment is different in that the case lid 10 only covers the inner case 2, and the portion between the outer case 1 and the inner case 2 is a closed space. For clarity of the drawing, the cutting device 5 is not shown in fig. 9. Compared with embodiment 1, the present embodiment has the advantages that the part between the outer box body 1 and the inner box body 2 is a closed space, so that the parts such as the gauge 3, the clamping device 4, the controller 6 and the power supply 8 can be better protected without being opened every time the wire is installed.

The above is only the preferred embodiment of the present invention, not to the limitation of the present invention in any form, all the technical matters of the present invention all fall into the protection scope of the present invention to any simple modification and equivalent change of the above embodiments.

Claims

1. The utility model provides a net twine measurement cuts off deposits case which characterized in that: comprises an outer box body (1), an inner box body (2) arranged in the outer box body (1) and a box cover (10) capable of opening and closing the outer box body (1); an outgoing line hole (11) is formed in the wall of the outer box body (1); an inner wire outlet hole (21) is formed in the wall of the inner box body (2); a meter (3) for measuring the length of the net cable (101) is arranged in the outer box body (1); a clamping device (4) capable of locking the net wire (101) from being pulled is arranged in the outer box body (1); a cutting device (5) is arranged on the wall of the outer box body (1) at the position of the outgoing line hole (11); a controller (6) and a power supply (9) are arranged in the outer box body (1); an input keyboard (7), a display screen (8) and a power switch (91) are arranged on the wall of the outer box body (1); the controller (6) is respectively connected with the meter (3), the clamping device (4), the input keyboard (7) and the display screen (8).

2. The net twine metering, cutting and storing box as claimed in claim 1, wherein: the meter (3) comprises a roller (31) which is driven to rotate by a net wire (101) in the outer box body (1), a magnetic block (32) arranged on the roller (31) and a Hall sensor (33) arranged on one side of the roller (31); the Hall sensor (33) is connected with the controller (6); the controller (6) is a single chip microcomputer.

3. The net twine metering, cutting and storing box as claimed in claim 1, wherein: the clamping device (4) comprises a steering engine (41) arranged in the outer box body (1) and connected with the controller (6), and a clamp (43) connected to a steering engine shaft (42); the clamp (43) can be matched with the wall of the outer box body (1) to lock the net wire (101) from being pulled.

4. The net twine metering, cutting and storing box as claimed in claim 2, wherein: the single chip microcomputer is of a model AT89C 52.

5. The net twine metering, cutting and storing box as claimed in claim 3, wherein: the steering engine (41) is an MG90 digital steering engine.

6. The net twine metering, cutting and storing box as claimed in claim 1, wherein: the power supply (9) comprises a dry battery.

7. The net twine metering, cutting and storing box as claimed in claim 1, wherein: a roller shaft (22) capable of rotating is arranged at the middle shaft of the inner box body (2); one end of the roll shaft (22) penetrates out of the outer box body (1) and then is connected with a crank (23).

8. The utility model provides a net twine measurement cuts off deposits case which characterized in that: comprises an outer box body (1), an inner box body (2) arranged in the outer box body (1) and a box cover (10) capable of opening and closing the inner box body (2); a closed space is formed between the outer box body (1) and the inner box body (2); an outgoing line hole (11) is formed in the wall of the outer box body (1); an inner wire outlet hole (21) is formed in the wall of the inner box body (2); a meter (3) for measuring the length of the net cable (101) is arranged in the outer box body (1); a clamping device (4) capable of locking the net wire (101) from being pulled is arranged in the outer box body (1); a cutting device (5) is arranged on the wall of the outer box body (1) at the position of the outgoing line hole (11); a controller (6) and a power supply (9) are arranged in the outer box body (1); an input keyboard (7), a display screen (8) and a power switch (91) are arranged on the wall of the outer box body (1); the controller (6) is respectively connected with the meter (3), the clamping device (4), the input keyboard (7) and the display screen (8).