CN106410447B - A kind of metering thread guide devices - Google Patents

Abstract

The invention discloses a kind of metering thread guide devices, including connect cable guide, cable clamp and guard shield；Cable clamp includes a cable clamp ontology and fastening bolt, cable bare wire is fixed on cable clamp ontology by fastening bolt, connecing cable guide includes connecing cable guide ontology, latch segment and clamping screw, cable clamp ontology and connect the overall structure that cable guide ontology is integrally formed, lead is fixed on by latch segment and clamping screw and is connect on cable guide ontology, to carry out electrically conductive connection with cable；Guard shield includes the protective layer for being coated on outer surface, the first protective cover for protecting line cavity side, the protecting film for protecting line cavity both ends, the second protective cover for protecting fastening bolt, the third protective cover for protecting clamping screw and the 4th protective cover for protecting fairlead；The configuration of the present invention is simple, safe and reliable, operation is convenient, and clamps cable and consolidate, and it is good can be applicable in different size cables, versatility.

Description

A metering lead device

technical field

The invention relates to the technical field of electric power supply, in particular to a metering lead device.

Background technique

It is very important to ensure the safe and stable operation of the power grid. The poor handling of wire connections has brought people a lot of trouble. At present, most places use the lead wires to be directly wound on the cable road. This method often leads to weak wiring and disconnection. It will bring a certain loss to the user, and bring a lot of work to the maintenance and repair personnel; the existing lead clip can fix the cable and the lead on the clip body at the same time to realize the meter connection, but most lead clips can only clamp It is necessary to select different lead clips according to different sizes of cables, and there are many non-standard cables for general-purpose cables, and even the diameters of standard cables are different, resulting in the cable clamping is not firm enough and easy to loosen; Although some wire clips can hold cables of different specifications, they lack protective measures, or the protective measures are not safe and reliable enough, and the structure is too complicated, the operation is troublesome, the production and processing costs are high, and they are not universal.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a metering lead device with simple structure, safety and reliability, convenient operation, suitable for cables of different sizes, good versatility, stable clamping and simple operation.

The present invention is achieved through the following technical solutions:

A metering lead device comprises a lead wire clip made of conductive material, a cable clip and a protective casing made of insulating material; the lead wire clip comprises a lead wire clip body, a locking block and a locking bolt, and the The lead wire clip body is provided with a locking groove, the locking block is embedded in the locking groove and is connected to the lead wire clip body through locking bolts, and at least one end of the lead wire clip body is provided with a connection to the locking groove. At least one lead hole, the lower surface of the locking block and/or the bottom of the locking groove is provided with a wire insertion slot corresponding to the lead hole, and the length of the wire insertion slot is greater than that of the lock The length of the tightening groove, the lower surface of the locking block cooperates with the bottom of the locking groove to form a pressing surface for pressing the lead wire. The bolt can adjust the distance between the lower surface of the locking block and the bottom of the locking groove, so that the locking block presses the bare lead wire in the locking groove; the cable clamp includes a cable clamp body and Fastening bolts, the cable clip body and the lead wire clip body are integrally formed into an integral structure or connected to each other independent structure, the cable clip body is oppositely provided with a static clip and a fastening screw hole, the tightening The fixing bolt is threadedly connected with the tightening screw hole. The end of the tightening bolt close to the static collet is arranged opposite to the static collet and cooperates to form a wire-passing cavity for the cable to pass through. Rotating the tightening bolt can make it relatively static. The clamps move toward each other, so that the fastening bolts cooperate with the static clamps to clamp the bare cable wires in the wire-passing cavity; the protective casing includes an outer surface covering the cable clamp body and the lead wire clamp body The protective layer, the first protective cover for protecting the side of the wire-passing cavity, the protective film for protecting both ends of the wire-passing cavity, the second protective cover for protecting the fastening bolts, the first protective cover for protecting the locking bolts. Three protective covers and a fourth protective cover for protecting the lead holes, the protective film is arranged on the first protective cover and/or the protective layer, the protective film is made of elastic material and is provided with a protective film for the cable to pass through The connection between at least one of the first protective cover, the second protective cover, the third protective cover, and the fourth protective cover and the protective layer is hinged.

Further improvements of the present invention include:

Preferably, at least two layers of protective films are respectively provided at both ends of the wire-passing cavity, and each layer of the protective films is composed of half films respectively disposed on the protective layer and the first protective cover.

Preferably, one side of the first protective cover is hinged with the protective layer, and the other side is movably connected with the protective layer through a jumper buckle, and the direction of opening and closing of the jumper buckle is different from the opening and closing direction of the first protective cover relative to the protective layer. direction.

Preferably, the jumper buckle includes a jumper rod, one end of the jumper rod is hinged with the first protective cover, and the other end is provided with a pin, and the protective layer is correspondingly provided with a pin to cooperate with the pin For the connected female buckle, the direction in which the male buckle and the female buckle are matched and connected is different from the direction in which the first protective cover is opened relative to the protective layer.

Preferably, one side of the second protective cover and/or the third protective cover is hinged with the protective layer, and the other side is connected with the protective layer by snaps.

Preferably, the clip includes a clip slot provided on the second protective cover and/or the third protective cover, and a clip arranged on the protective layer and matched with the clip slot.

Preferably, the second protective cover and the third protective cover are integral structures.

Preferably, a detachable connection is made between the fourth protective cover and the lead hole, and the detachable connection is an interference fit connection, and the fourth protective cover and the protective layer are connected by wire or softly connected .

Preferably, the lead holes penetrate through both ends of the lead clip body, and the wire insertion slot communicates with the lead holes.

Preferably, the lower surface of the locking block or the groove bottom of the locking groove is provided with a line pressing protrusion, and the corresponding groove bottom of the locking groove or the lower surface of the locking block is provided with a The wire-pressing groove corresponds to the wire-pressing protrusion. When in use, the wire-pressing protrusion bends the lead wire in the direction of the wire-pressing groove to prevent the lead wire from loosening.

Preferably, the line pressing protrusion is a wave-shaped circular arc protrusion, and the line pressing groove is a wave-shaped circular arc groove corresponding to the wave-shaped circular arc protrusion.

Preferably, the locking groove is a C-shaped structural groove penetrating one side or opposite sides of the wire clip body, and the locking block is inserted from one side of the locking groove.

Preferably, both ends of the locking groove are concave arc structures, the locking block is composed of a male block and a female block, opposite ends of the male block are convex arc structures, and one end of the female block is convex The arc structure has a concave arc structure at the opposite end, the convex arc structure at one end of the male block is hinged with the concave arc structure at one end of the locking groove, and the convex arc structure at the other end is connected with the concave arc of the female block. The convex arc structure of the female block is hinged with the concave arc structure at the other end of the locking groove, and the through hole or threaded hole for the locking bolt to pass through is arranged at the hinged position of the male block and the female block .

Preferably, the length of the locking block is slightly larger than the length of the locking groove. In the locked state, the male block, the female block and the locking groove are tightly fitted, and all the locking blocks are in a tight fit. A certain angle is formed between the male block and the female block, and the force component of the locking groove on the locking block in the locking direction can make the locking block self-locking.

Preferably, a first lead hole and a second lead hole are juxtaposed on the lead clip body, and the diameters of the first lead hole and the second lead hole applicable to the lead wire are 16-25mm and 6-10mm, respectively. The size of the wire insertion slot is also different, and the first lead hole and the second lead hole are also provided with lead marks beside them.

Preferably, the fastening bolt is provided between the first lead hole and the second lead hole.

Preferably, a wire clamping block is further provided on the end of the fastening bolt close to the static chuck, and the wire clamping block is rotatably connected with the fastening bolt. The rotatable connection method is as follows: the clamp A keyway is arranged on the other side opposite to the surface of the wire block holding the cable, and an annular protrusion matched with the keyway is arranged on the fastening bolt.

Preferably, the key groove is an inverted T-shaped straight groove longitudinally penetrating one end or opposite ends of the wire clamping block, and the annular protrusion of the fastening bolt can be inserted into the straight groove from the through side of the key groove. groove.

Preferably, the straight groove is further provided with two limit pins for restricting the longitudinal movement of the fastening bolts and two corresponding limit pin holes, the two limit pins are respectively arranged on the fastening bolts on both sides.

Preferably, the surface on which the wire clamping block and/or the static clamp cooperates to clamp the cable is an arc surface structure or a bending surface structure with at least two sides that can be in contact with the cable.

Preferably, a non-slip sawtooth structure is provided on the surface of the wire clamping block and/or the static clamping head for clamping the cable.

Preferably, the cable clip body is an integrated C-shaped structure, and the static clip and the fastening screw holes are respectively provided at opposite ends of the cable clip body.

The invention has the following advantages: simple structure, safety and reliability, convenient operation, stable clamping, applicable to cables of different sizes, and good versatility.

Description of drawings

1 is a schematic diagram of an exploded structure of a metering lead device of the present invention;

2 is a schematic structural diagram of a metering lead device of the present invention;

Fig. 3 is the structural representation of connecting lead clip and cable clip in Fig. 1;

Fig. 4 is the exploded structure schematic diagram of Fig. 3;

Fig. 5 is the structural representation of male block and female block in Fig. 3;

Fig. 6 is the structural representation of the fastening bolt and the wire clamping block in Fig. 3;

7 is a schematic structural diagram of a sawtooth structure in a metering lead device of the present invention;

Among them: 1-connecting lead clip, 11-connecting lead clip body, 111-locking groove, 112-lead hole, 1121-first lead hole, 1122-second lead hole, 1123-lead identification, 113-wire slot , 114-crimping protrusion, 115-crimping groove, 12-locking block, 121-male block, 122-female block, 13-locking bolt, 2-cable clip, 21-cable clip body, 211-static chuck, 2111-serrated structure, 212-fastening screw hole, 213-fastening bolt, 2131-ring protrusion, 214-clamping block, 2141-keyway, 2142-limiting pin, 2143-limiting Pin hole, 3-protective shell, 31-first protective cover, 32-second protective cover, 33-third protective cover, 34-fourth protective cover, 35-protective layer, 36-protective film, 361-passing wire Hole, 362-semi-membrane, 37- jumper buckle, 371- jumper rod, 372-male buckle, 373-female buckle, 38-buckle, 381-card slot, 382-block, 4-cable cavity .

Detailed ways

Below in conjunction with accompanying drawing, a kind of metering lead device of the present invention is further described:

Example 1:

As shown in Figures 1-7, a metering lead device includes a lead wire clip 1 made of conductive material, a cable clip 2 and a protective casing 3 made of insulating material;

The lead clip 1 includes a lead clip body 11, a locking block 12 and a locking bolt 13. The lead clip body 11 is provided with a locking groove 111, and the locking block 12 is embedded in the locking groove 111 and passes through the locking bolt. 13 is connected to the lead wire clip body 11, at least one lead hole connected to the locking groove 111 is provided on at least one end of the lead wire clip body 11, and the lower surface of the locking block 12 and/or the groove bottom of the locking groove 111 is provided. There is a wire insertion slot 113 corresponding to the lead hole. The length of the wire insertion slot 113 is greater than the length of the locking slot 111. The lower surface of the locking block 12 cooperates with the bottom of the locking slot 111 to form a pressure for pressing the lead. When in use, the bare lead wire is inserted into the wire slot 113 through the lead hole, and the distance between the lower surface of the locking block 12 and the bottom of the locking groove 111 can be adjusted by rotating the locking bolt 13, so that the The locking block 12 presses the bare lead wire into the locking groove 111; the setting of the wire insertion groove 113 can effectively locate the lead wire, prevent it from sliding, and is more conducive to long-term and stable tightening of the lead wire on the lead wire clip 11 , and there is no need to perform multiple calibrations as in the traditional way of fixing the lead wire, the wiring is convenient, and the work efficiency of the construction personnel can be improved; because the length of the wire insertion slot 113 is greater than the length of the locking slot 111, the lead wire can be pressed by the entire locking block 12. , the contact area between the lead and the locking block 12 is increased, and the pressing force of the locking block 12 on the lead is further increased, so that the installation of the lead is more firm and reliable;

The cable clip 2 includes a cable clip body 21 and a fastening bolt 213. The cable clip body 21 and the connecting lead clip body 11 are integrally formed into an integral structure or are connected to each other independently of each other. The cable clip body 21 is oppositely provided with The static collet 211 and the tightening screw holes 212, the tightening bolts 213 are threadedly connected with the tightening screw holes 212, and one end of the tightening bolts 213 close to the static collet 211 is opposite to the static collet 211 and is formed to be used for supplying cables. When passing through the wire-passing cavity 4, rotating the fastening bolt 213 can make it move relative to the static collet 211, so that the fastening bolt 213 cooperates with the static collet 211 to clamp the bare cable wire in the wire-passing cavity 4;

The protective casing 3 includes a protective layer 35 covering the outer surfaces of the cable clip body 21 and the lead wire clip body 11 , a first protective cover 31 for protecting the side surface of the wire-passing cavity 4 , and a first protective cover 31 for protecting the wire-passing cavity 4 . The protective film 36 at both ends, the second protective cover 32 for protecting the fastening bolt 213, the third protective cover 33 for protecting the locking bolt 13, and the fourth protective cover 34 for protecting the lead hole, the protective film 36 is provided On the first protective cover 31 and the protective layer 35, the protective film 36 is made of elastic material and is provided with a wire hole 361 for the cable to pass through; the protective layer 31 does not need to be connected with the cable clamp during normal use The body 21 and the lead clip body 11 are separated, so the protective layer 31 is directly wrapped on the outer surfaces of the cable clip body 21 and the lead clip body 11 by means of encapsulation and other processes. It is convenient to operate, thereby making the operation efficiency of the operator higher; the elastic protective film 36 can not only play a role of insulation, but also prevent water droplets, dust and other sundries from entering the wire-passing cavity 4 and adhering to the bare wire of the cable. In addition, the elastic protective film 36 can be deformed to be suitable for cables with different wire diameters, and has good versatility; the fourth protective cover 34 can prevent debris from entering the lead hole and block the wire insertion slot 113, which is helpful for extending the metering lead device of the present invention. service life.

The two ends of the wire-passing cavity 4 are respectively provided with three layers of protective films 36, each layer of protective film 36 is composed of half-films 362 respectively arranged on the protective layer 35 and the first protective cover 31, and the three layers of protective films 36 pass the wire. The diameter of the holes decreases from the outer layer to the inner layer in order to better protect cables of different wire diameters.

One side of the first protective cover 31 is hinged with the protective layer 35 , and the other side is movably connected with the protective layer 35 through a cross-over buckle 37 . When the diameter of the cable is relatively thick, the squeezing force transmitted by the cable to the first protective cover 31 through the protective film 36 is relatively large, which is easy to cause the first protective cover 31 to be disengaged from the protective layer 35. Using the jumper buckle 37, Because the squeezing force of the cable and the opening and closing of the jumper buckle 37 are not in the same direction, the accidental loosening between the first protective cover 31 and the protective layer 35 can be effectively prevented, thereby eliminating potential safety hazards.

The jumper buckle 37 includes a jumper rod 371 , one end of the jumper rod 371 is hinged with the first protective cover 31 , the other end is provided with a male buckle 372 , and the protective layer 35 is correspondingly provided with a female connection with the male buckle 372 . The direction in which the buckle 373 , the male buckle 372 and the female buckle 373 are matched and connected is different from the direction in which the first protective cover 31 is opened relative to the protective layer 35 .

The second protective cover 32 and the third protective cover 33 are integrally formed. One side of the second protective cover 32 and the third protective cover 33 is hinged with the protective layer 35 , and the other side is connected with the protective layer 35 through a buckle 38 .

The clip 38 includes a clip slot 381 provided on the second protective cover 32 and the third protective cover 33 , and a clip block 382 arranged on the protective layer 35 and matched with the clip slot 381 .

The fourth protective cover 34 and the lead hole are detachably connected, and the detachable connection is an interference fit connection, and the fourth protective cover and the protective layer 35 are connected by wires or by a soft connection.

The lead holes penetrate through the two ends of the lead clip body 11 , and the wire insertion slot 113 communicates with the lead holes. Compared with the blind hole type design of the existing lead wire clip with a lead hole at one end, the through-hole design of the through-type lead hole of the present invention enables the lead wire to pass through the entire lead wire clip body 11 through the lead hole and the wire insertion slot 113. On the one hand, It can increase the pressing force of the locking block 12 on the lead wire, so that the lead wire can be installed more firmly. When the lead wire is not pressed by the locking block 12 due to the bending or blockage of the wire slot 113, it is ensured that the lead wire is pressed by the locking block 12, so that the installation of the lead wire is safer, firmer and more reliable.

The lower surface of the locking block 12 or the groove bottom of the locking groove 111 is provided with a pressure line protrusion 114, and the corresponding groove bottom of the locking groove 111 or the lower surface of the locking block 12 is provided with a line pressure protrusion 114. Corresponding to the wire-pressing groove 115, when in use, the wire-pressing protrusion 114 presses and bends the lead wire in the direction of the wire-pressing groove 115 to prevent the lead wire from loosening.

The line pressing protrusion 114 is a wave-shaped circular arc protrusion, and the line pressing groove 115 is a wave-shaped circular arc groove corresponding to the wave-shaped circular arc protrusion.

The locking groove 111 is a C-shaped structural groove penetrating one side or opposite sides of the lead clip body 11 , and the locking block 12 is inserted from one side of the locking groove 111 .

Both ends of the locking groove 111 are concave arc structures, the locking block 12 is composed of a male block 121 and a female block 122, the opposite ends of the male block 121 are convex arc structures, and one end of the female block 122 is convex The arc structure has a concave arc structure at the opposite end, the convex arc structure at one end of the male block 121 is hinged with the concave arc structure at one end of the locking groove 111, and the convex arc structure at the other end is connected with the concave arc structure of the female block 122. The arc structure is hinged, the convex arc structure of the female block 122 is hinged with the concave arc structure at the other end of the locking groove 111 , the through holes or threaded holes for the locking bolts 13 to pass through are provided in the male block 121 and the female block 122 are hinged part.

The length of the locking block 12 is slightly larger than the length of the locking groove 111. In the locked state, the male block 121, the female block 122 and the locking groove 111 are tightly matched, and the male block 121 and the female block 122 of the locking block 12 A certain angle is formed between them, and the force component of the locking groove 111 on the locking block 12 in the locking direction can make the locking block 12 self-locking.

A first lead hole 1121 and a second lead hole 1122 are arranged on the lead clip body 11 in parallel. The first lead hole 1121 and the second lead hole 1122 have different sizes, and the corresponding sizes of the wire insertion slots 113 are also different. According to the different specifications of the general lead, the applicable lead diameters of the first lead hole 1121 and the second lead hole 1122 are 16-25mm and 6-10mm respectively, and the first lead hole 1121 and the second lead hole 1122 are also provided with lead wires beside them. Identifies 1123 to increase its versatility and operability.

The fastening bolt 213 is arranged between the first lead hole 1121 and the second lead hole 1122, and the structure is more firm.

The end of the fastening bolt 213 close to the static chuck 211 is also provided with a wire clamping block 214, and the wire clamping block 214 is rotatably connected with the fastening bolt 213. The rotatable connection method is: the wire clamping block 214 clamps the cable. A keyway 2141 is set on the opposite side of the face, and an annular protrusion 2131 is set on the fastening bolt 213 to match with the keyway 2141. This structure can make the clamping block 214 always press on the bare cable wire when the fastening bolt 213 is rotated. It does not follow the deflection, which is more conducive to holding the cable firmly.

The key groove 2141 is an inverted T-shaped straight groove longitudinally penetrating one end or opposite ends of the wire clamping block 214 , and the annular protrusion 2131 of the fastening bolt 213 can be inserted into the straight groove from the through side of the key groove 2141 .

The straight groove is also provided with two limit pins 2142 for restricting the longitudinal movement of the fastening bolt 213 and two corresponding limit pin holes 2143 .

The surface of the clamping block 214 and the static clamp 211 for clamping the cable is an arc surface structure or a bending surface structure with at least two sides that can contact the cable, which is more conducive to increasing the stability of the cable clamping.

A non-slip sawtooth structure 2111 is provided on the surface of the static clamp 211 for clamping the cable, which can effectively prevent the cable from rotating or sliding when being clamped, and is more conducive to increasing the stability of the cable clamping.

The cable clamp body 21 is an integrated C-shaped structure, and the static clamp head 211 and the fastening screw holes 212 are respectively provided at opposite ends of the cable clamp body 21 .

The hinge in the embodiment can be hinged through a hinge shaft, or hinged through a soft connection.

Before use, peel off one end of the cable to be connected to the lead to expose the bare wire, open the first protective cover 31 and the second protective cover 32, put the cable into the wire passage cavity, and then tighten the bolt 213 to clamp the cable. Tightly fix it, then close the first protective cover 31 and the second protective cover 32. When the lead wire is not needed at ordinary times, the cable installed with the metering lead device is normally used as a lead wire. When the lead wire needs to be connected, open the corresponding fourth protection Cover 32 and the third protective cover 33, insert the lead wire into the wire slot 113 through the corresponding lead hole, then rotate the locking bolt 13 to lock the lead wire in the locking groove 111, and finally close the third protective cover 33, Therefore, the connection between the cable and the lead wire is realized, the operation is convenient, the efficiency of the lead wire connection can be greatly improved, and the utility model is safe and reliable.

The present invention introduces some embodiments and the accompanying drawings in detail, but the present invention is not limited to these embodiments and the accompanying drawings, especially not limited to the shape of the metering lead device in the drawings, which show various A more beautiful metering lead device in shape, although this shape is not the technical point of the protection of the present invention, as long as those of ordinary skill in the art according to the present invention, do not pay creative work, it is obtained by modifying, equivalently replacing, improving, etc. Other embodiments and the accompanying drawings are all within the protection scope of the present invention.

Claims (21)

1. A metering lead device, characterized in that it comprises a lead wire clamp (1) made of conductive material, a cable clamp (2) and a protective casing (3) made of insulating material; The lead wire clip (1) comprises a lead wire clip body (11), a locking block (12) and a locking bolt (13), and the lead wire clip body (11) is provided with a locking groove (111), The locking block (12) is embedded in the locking groove (111) and is connected with the lead wire clamp body (11) through a locking bolt (13), and a communication lock is provided on at least one end of the lead wire clamp body (11). At least one lead hole of the tightening groove (111), a wire slot corresponding to the lead hole is provided on the lower surface of the locking block (12) and/or the groove bottom of the locking groove (111) (113), the wire slot (113) extends to the side of the locking block and/or the locking groove so that its length is greater than the length of the bottom surface of the locking groove (111), and the lower part of the locking block (12) The surface cooperates with the groove bottom of the locking groove (111) to form a pressing surface for pressing the lead wire. During use, the bare lead wire is inserted into the wire insertion groove (113) through the lead hole, and the locking bolt (13) is rotated by turning the locking bolt (13). The distance between the lower surface of the locking block (12) and the groove bottom of the locking groove (111) can be adjusted, so that the locking block (12) presses the bare lead wire into the locking groove (111); The cable clip (2) includes a cable clip body (21) and a fastening bolt (213), and the cable clip body (21) and the lead wire clip body (11) are integrally formed into an integral structure Or the independent structure of the connection, the cable clamp body (21) is provided with a static clamp (211) and a fastening screw hole (212) opposite to each other, and the fastening bolt (213) is threaded with the fastening screw hole (212) To connect, the end of the fastening bolt (213) close to the static collet (211) is arranged opposite to the static collet (211) and cooperates to form a wire-passing cavity (4) for the cable to pass through, and turn the fastening bolt ( 213) can make it move toward each other relative to the static chuck (211), so that the fastening bolt (213) cooperates with the static chuck (211) to clamp the bare cable wire in the wire-passing cavity (4); The protective casing (3) includes a protective layer (35) covering the outer surfaces of the cable clip body (21) and the lead wire clip body (11), and is used to protect the wire-passing cavity (4) The first protective cover (31) on the side, the protective film (36) for protecting both ends of the wire-passing cavity (4), the second protective cover (32) for protecting the fastening bolts (213), for protecting the lock A third protective cover (33) for tightening the bolts (13) and a fourth protective cover (34) for protecting the lead holes, the protective film (36) is provided on the first protective cover (31) and/or the protective layer ( 35), the protective film (36) is made of elastic material and is provided with a wire hole (361) for the cable to pass through, the first protective cover (31), the second protective cover (32) The connection between at least one of the third protective cover (33) and the fourth protective cover (34) and the protective layer (35) is hinged; both ends of the wire passage cavity (4) are respectively provided with at least one Two layers of protective films (36), each layer of the protective film (36) is composed of half films (362) respectively disposed on the protective layer (35) and the first protective cover (31), and at least two The diameter of the wire hole on the protective film decreases sequentially from the outer layer to the inner layer. 2 . The metering lead device according to claim 1 , wherein one side of the first protective cover ( 31 ) is hinged with the protective layer ( 35 ), and the other side is connected to the protective layer ( 35 ) through a bridge. 3 . The connecting buckle (37) is movably connected, and the opening and closing direction of the jumping buckle (37) is different from the opening direction of the first protective cover (31) relative to the protective layer (35). 3. The metering lead device according to claim 2, wherein the jumper buckle (37) comprises a jumper rod (371), and one end of the jumper rod (371) is connected to the first protective cover (31) Hinged, the other end is provided with a male button (372), the protective layer (35) is correspondingly provided with a female button (373) that is connected with the male button (372), the male button (372) ) and the mating connection direction of the female buckle (373) is different from the opening direction of the first protective cover (31) relative to the protective layer (35). 4. The metering lead device according to claim 1, wherein one side of the second protective cover (32) and/or the third protective cover (33) is hinged with the protective layer (35) , and the other side is connected with the protective layer (35) through a buckle (38). 5. The metering lead device according to claim 4, characterized in that, the clip (38) comprises a clasp (38) provided on the second protective cover (32) and/or the third protective cover (33) A card slot (381), and a card block (382) arranged on the protective layer (35) and matched with the card slot (381). 6 . The metering lead device according to claim 1 , wherein the second protective cover ( 32 ) and the third protective cover ( 33 ) have an integral structure. 7 . 7. The metering lead device according to claim 1, wherein the fourth protective cover (34) and the lead hole are detachably connected, and the detachable connection is an interference fit connection, The fourth protective cover and the protective layer (35) are connected by wire or by soft connection. 8 . The metering lead device according to claim 1 , wherein the lead hole penetrates both ends of the lead wire clip body ( 11 ), and the wire insertion slot ( 113 ) communicates with the lead hole. 9 . 9 . The metering lead device according to claim 1 , wherein a wire pressing protrusion ( 114 ) is provided on the lower surface of the locking block ( 12 ) or the groove bottom of the locking groove ( 111 ). 10 . , the corresponding groove bottom of the locking groove (111) or the lower surface of the locking block (12) is provided with a wire pressing groove (115) corresponding to the wire pressing protrusion (114). The wire crimping protrusion (114) bends the lead wire in the direction of the wire crimping groove (115) to prevent the lead wire from loosening. 10 . The metering lead device according to claim 9 , wherein the line pressing protrusion ( 114 ) is a wave-shaped circular arc protrusion, and the line pressing groove ( 115 ) is the same as the wave-shaped circular arc protrusion. 11 . The wavy circular arc groove corresponding to the arc protrusion. 11 . The metering lead device according to claim 1 , wherein the locking groove ( 111 ) is a C-shaped structure groove penetrating one side or opposite sides of the lead clip body ( 11 ), so the The locking block (12) is inserted from one side of the locking groove (111). 12. The metering lead device according to claim 11, characterized in that, both ends of the locking groove (111) are concave arc structures, and the locking block (12) is composed of a male block (121) and a A female block (122) is formed, the opposite ends of the male block (121) are convex arc structures, one end of the female block (122) is a convex arc structure, and the opposite end thereof is a concave arc structure. 121) The convex arc structure at one end is hinged with the concave arc structure at one end of the locking groove (111), and the convex arc structure at the other end is hinged with the concave arc structure of the mother block (122). ) of the convex arc structure is hinged with the concave arc structure at the other end of the locking groove (111). 122) Hinged parts. 13. The metering lead device according to claim 12, characterized in that the length of the locking block (12) is slightly greater than the length of the locking groove (111), and in the locked state, the male block (111) 121), the female block (122) is tightly fitted with the locking groove (111), and the male block (121) and the female block (122) of the locking block (12) form a tight fit. With a certain included angle, the force component of the locking groove (111) on the locking block (12) in the locking direction can make the locking block (12) self-locking. 14. The metering lead device according to claim 1, wherein a first lead hole (1121) and a second lead hole (1122) are arranged in parallel on the lead wire clip body (11), and the first lead hole The applicable lead diameters of (1121) and the second lead hole (1122) are 16-25mm and 6-10mm respectively, and the corresponding sizes of the wire slot (113) are also different, and the first lead hole (1121) and the second lead hole (1122) are also provided with lead marks (1123). 15. The metering lead device according to claim 14, wherein the fastening bolt (213) is provided between the first lead hole (1121) and the second lead hole (1122). 16. The metering lead device according to claim 1, wherein a wire clamping block (214) is further provided on the end of the fastening bolt (213) close to the static clamp (211), and the clamp The wire block (214) is rotatably connected with the fastening bolt (213), and the rotatable connection is as follows: a key groove (2141) is provided on the other side opposite to the surface of the wire clamping block (214) on which the cable is clamped ), an annular protrusion (2131) matched with the key groove (2141) is arranged on the fastening bolt (213). 17. The metering lead device according to claim 16, wherein the keyway (2141) is an inverted T-shaped straight groove longitudinally penetrating one end or opposite ends of the wire clamping block (214), and the keyway (2141) is an inverted T-shaped straight groove. The annular protrusion (2131) of the fixing bolt (213) can be fitted into the straight groove from the through side of the key groove (2141). 18. The metering lead device according to claim 17, wherein the straight groove is further provided with two limit pins (2142) and corresponding two limit pins (2142) for restricting the longitudinal movement of the fastening bolt (213). There are limit pin holes (2143), and the two limit pins (2142) are respectively provided on both sides of the fastening bolt (213). 19. The metering lead device according to claim 16, characterized in that, the surface on which the wire clamping block (214) and/or the static clamp (211) cooperates to clamp the cable is an arc surface structure or is at least a Bending surface structure that can be in contact with the cable on both sides. 20. The metering lead device according to claim 16, characterized in that, a non-slip sawtooth structure ( 2111). 21. The metering lead device according to any one of claims 1-20, wherein the cable clamp body (21) is an integrated C-shaped structure, the static clamp (211) and the fastening The screw holes (212) are respectively arranged at opposite ends of the cable clamp body (21).