CN220291566U - Combined cable protector for entrance and exit of household meter metering switch box bottom - Google Patents

Abstract

A combined cable protection device for the entry and exit of the bottom of a meter measuring switch box relates to a cable protection device. The cable protector is designed for mainly solving the problem that the cable is difficult to pass through in the existing cable protector. The waterproof elbow comprises a three-hole waterproof elbow, a double-hole cable protection pipe and a double-hole U-shaped cable protection elbow; the three-hole waterproof elbow comprises an upper cover and a base, and the base is arranged in the lower edge of the upper cover; the locating pin and the locking pin of the upper cover are inserted into the locating hole and the locking hole of the base. A partition plate is arranged in the tube body of the double-hole cable protection tube, and the upper end of the tube body extends into the base of the three-hole waterproof elbow. The double-hole U-shaped cable protection elbow comprises an elbow base and an elbow main body; the boss on the elbow base is inserted into the slot of the elbow main body, and the lock pin on the elbow base is inserted into the lock hole of the elbow main body. The U-shaped partition board is arranged in the bent pipe main body, the lower end of the pipe body extends into the threaded pipe of the double-hole U-shaped cable protection bent pipe, and the nut at the lower end of the pipe body is screwed on the threaded pipe. The advantage is that the cable is easy to be threaded.

Description

Combined cable protector for entrance and exit of household meter metering switch box bottom

Technical Field

The utility model relates to a cable protection device, in particular to a combined cable protection device for entering and exiting from the bottom of a metering switch box of a household meter.

Background

With the rapid development of construction and transformation of rural power grid household meters in the whole country, the technical requirements of updating, higher and practicability are provided for the comprehensive protection of the rural household meter metering switch box cable.

The household meter metering switch box with the bottom of the inlet and outlet wire is characterized in that a cable inlet hole and an outlet hole are formed in the bottom of the household meter metering switch box, 2 cable protection pipes with the length of 6 meters are arranged on two sides or one side of a telegraph pole, wherein 1 cable protection pipe is a main cable protection pipe, and the other 1 cable protection pipe is a user cable protection pipe.

The upper ends of the 2 cable protection pipes are sleeved with a right-angle elbow, and a short pipe is inserted into the other hole of the right-angle elbow, so that rainwater can be prevented from entering the pipe body and the household meter metering switch box, and electric equipment such as cables, electric meters and the like can be prevented from being damaged; the lower ends of the 2 cable protection pipes are on the same plane with the bottom of the box body, the cable extending out of the lower ends of the main cable protection pipes must be bent into a U-shaped bend to pass through the wire inlet hole opened at the bottom of the box body and enter the main switch in the box body, and the cable extending out of the lower ends of the user cable protection pipes must also be bent into a U-shaped bend to pass through the wire outlet hole opened at the bottom of the box body and enter the user terminal in the box body. For the protection of the U-shaped bend of the cable, at present, only one method is adopted, the lower end of the main cable protection pipe is connected with a right-angle elbow, the other end of the right-angle elbow is connected with a horizontal short pipe, the other end of the horizontal short pipe is connected with a right-angle elbow, the other end of the right-angle elbow is connected with a vertical short pipe, and the upper end of the vertical short pipe is inserted into a wire inlet hole at the bottom of a metering switch box of a household meter; the subscriber cable protection pipe is likewise connected in this way to the meter box. The U-shaped cable protection bent pipe is formed by 2 right-angle elbows and 2 short pipes, the 2 cable protection pipes are connected with the meter measuring switch box of the household meter by using the 2U-shaped cable protection bent pipes to comprehensively protect the U-shaped bent cables of the main cable and the user cable, the main cable and the user cable are separated, short-circuit overheat and equipment damage accidents between the main cable and the user cable are avoided, and rainwater can be completely prevented from entering the box by an inlet and outlet wire at the lower part of the meter measuring switch box, and an ammeter and an electric element are burnt.

The disadvantage of this approach is that: the household meter measuring switch box is provided with 2 single-hole cable protection pipes, more right-angle bends are needed, and the cable needs to be bent slowly, and can only enter the household meter measuring switch box after passing through the right-angle bends, the short pipes, the right-angle bends and the short pipes a little. The cable is difficult to penetrate, tedious, wastes a large amount of manpower and material resources, and the connection of the pipe body and the elbow bend is difficult to be firmly stuck, and the pipe body is very easy to fall off, so that the cable is exposed, and the personal safety and the safe operation of the meter measuring switch box of the household meter are jeopardized.

Disclosure of Invention

The technical problem to be solved by the utility model is to pass through a combined cable protection device at the bottom of a household meter metering switch box, which can avoid the complicated, complex, time-consuming and labor-consuming processes of passing through a right-angle elbow and a short pipe.

The above object is achieved in that: the waterproof elbow comprises a three-hole waterproof elbow, a double-hole cable protection pipe and a double-hole U-shaped cable protection elbow; the three-hole waterproof elbow is connected to the upper end of the double-hole cable protection tube, and the double-hole U-shaped cable protection elbow is connected to the lower end of the double-hole cable protection tube.

The three-hole waterproof elbow comprises an upper cover, the lower end of the upper cover is open, and a plurality of positioning pins extending downwards are fixed at the top in the upper cover; the lower extreme of upper cover is equipped with round lower border, and the upper end inner wall and the upper cover lower extreme outer wall of lower border are together fixed, have formed the spacing platform of base between upper cover lower extreme and the lower border upper end like this, are equipped with a plurality of lockhole on the lower border inner wall.

The device also comprises a base, the size of the base is matched with the size of the lower edge on the upper cover, the thickness of the base is the same as the height of the lower edge, a circular tube is fixed in the middle of the base and used as an interface of the porous cable protection tube, the upper surface of the circular tube and the upper surface of the base are on the same plane, and the lower end of the circular tube extends out of the base; screw holes are symmetrically formed in two sides of a circular tube extending out of the base; the upper end of the inner wall of the circular tube is fixed with a cable protection tube limiting table.

A left cable through hole is formed in the base at the left side of the round tube, an opening is formed in the left edge of the base at the left side of the left cable through hole, the opening is communicated with the left cable through hole, and the opening is a cable inlet and a cable outlet; a right cable through hole is formed in the base on the right side of the round tube, an opening is formed in the right edge of the base on the right side of the right cable through hole, the opening is communicated with the right cable through hole, and the opening is a cable inlet and a cable outlet; the round tube in the middle of the base of the three-hole waterproof elbow, the left cable through hole and the right cable through hole are all arranged downwards.

The base is provided with positioning holes which are the same as the positioning pins on the upper cover in number and corresponding in position.

A first lock pin is arranged on the side wall of the base at the position corresponding to each lock hole at the lower edge; the base is arranged in the lower edge of the upper cover, and the upper end of the base is propped against the base limiting table of the upper cover; each locating pin on the upper cover is inserted into each locating hole of the base respectively, and each first locking pin on the base is inserted into each locking hole at the lower edge of the upper cover respectively.

The upper cover and the lower edge are of an integral injection molding structure, and the base and the round tube are of an integral injection molding structure.

The double-hole cable protection tube comprises a tube body, wherein an axial partition plate is fixed in the tube body, the partition plate divides the interior of the tube body into two cavities, one cavity is a main cable channel, the other cavity is a user cable channel, and a quick joint nut is arranged at the lower end of the tube body.

The upper end of the double-hole cable protection tube stretches into the circular tube of the base of the three-hole waterproof elbow, the upper end of the double-hole cable protection tube is in contact with the cable protection tube limiting table in the circular tube, the double-hole cable protection tube is also provided with a screw hole at the position corresponding to the screw hole of the circular tube, and the screw is screwed in the screw hole of the circular tube and the screw hole of the double-hole cable protection tube.

The double-hole U-shaped cable protection elbow comprises an elbow base and an elbow main body;

the bent pipe base is a straight-edge elliptical groove body, the opening end of the groove body is the upper end face of the bent pipe base, namely the bent pipe base comprises a U-shaped long groove, the left end and the right end of the U-shaped long groove are respectively connected with arc plugs, two straight edges at the upper edge of the U-shaped long groove and two arc edges at the upper edge of the two arc plugs form a straight-edge ellipse, and the bent pipe base is of an integrated structure; a circle of straight-edge elliptic bosses extending upwards are fixed on the upper edge of the bent pipe base; the top of return bend base surface is fixed with the first outer edge that the round extends to the outside, is equipped with a plurality of recess on the first outer edge, is fixed with a second lockpin in every recess.

The bent pipe main body comprises a left vertical pipe, a bottom horizontal pipe and a right vertical pipe which are connected together, wherein the lower end face of the bottom horizontal pipe is in an open shape, the shape and the specification size of the bottom horizontal pipe are the same as those of the upper surface of a base, namely, the lower end face of the bottom horizontal pipe is in a straight-sided ellipse, the left vertical pipe is fixed at the top of the left end of the bottom horizontal pipe, the right vertical pipe is fixed at the top of the right end of the bottom horizontal pipe, the left vertical pipe and the right vertical pipe are communicated with the bottom horizontal pipe, the left vertical pipe, the right vertical pipe and the bottom horizontal pipe are of an integrated structure, the upper part of the left vertical pipe is provided with threads, nuts are arranged on the threads, flange discs are fixed at the lower ends of the threads, the upper part of the right vertical pipe is fixedly provided with a threaded pipe, the pipe diameter of the threaded pipe is larger than that of the right vertical pipe, the inner wall of the lower end of the threaded pipe is fixed on the outer wall of the upper end of the right vertical pipe, the outer diameter of the double-hole cable protection pipe is matched with the inner diameter of the threaded pipe, a circular port platform is arranged at the inner bottom end of the threaded pipe, the circular port platform is integrally structured with the bottom of the bottom horizontal pipe, the circular port platform is fixedly arranged on the two circular ports of the upper ports are positioned on the two circular ports of the upper ports, and the two circular ports are positioned on the upper ports of the threaded platform, and the upper ports are positioned on the upper ports, and the upper ports of the upper ports are positioned on the upper ports; the lower end face of the pipe wall of the bottom horizontal pipe is provided with a circle of straight-edge elliptical slots which are matched with the boss on the upper surface of the base, the bottom of the outer surface of the bottom horizontal pipe is provided with a circle of second outer edges which extend outwards, a plurality of square locking plates which extend downwards are fixed on the second outer edges, and each locking plate is provided with a locking hole.

The positions of the lock plates on the bottom horizontal pipe correspond to the positions of the grooves on the first outer edge of the base respectively, the positions of the lock holes on the lock plates correspond to the positions of the second lock pins on the base, and the thickness of the second outer edge of the bottom horizontal pipe is the same as that of the first outer edge of the base. The bent pipe base and the bent pipe main body are placed up and down, the straight-edge elliptical boss on the bent pipe base is inserted into the straight-edge elliptical slot of the bent pipe main body, and the second lock pin on the bent pipe base is inserted into the lock hole of the bent pipe main body, so that the base is connected with the bent pipe main body.

The U-shaped partition plate is composed of a left end vertical portion, a lower end horizontal portion and a right end vertical portion which are connected together, the width of the left end vertical portion is matched with the pipe diameter of the left side vertical pipe, the width of the right end vertical portion is matched with the pipe diameter of the right side vertical pipe, the left end vertical portion and the right end vertical portion of the partition plate are respectively fixed with the left end vertical pipe and the right end vertical pipe inner wall of the pipe bending main body when the partition plate is installed in the pipe bending main body, the left end vertical portion is exposed 30mm from the left side vertical pipe upper end of the pipe bending main body, the left end vertical portion is located in the middle of the left side vertical pipe of the pipe bending main body, the right end vertical portion is located in the middle of the right side vertical pipe of the pipe bending main body, the upper end vertical portion is inserted into two slots of the annular spigot table at the bottom end of the inner wall of the threaded pipe, and the upper end of the right end vertical portion and the annular spigot table are on the same plane.

The lower extreme of diplopore cable protection pipe stretches into in the screwed pipe of the right side vertical pipe upper portion of diplopore U type cable protection return bend to baffle in the diplopore cable protection pipe aligns with the baffle in the U type cable protection return bend, and the nut on the quick-operation joint of diplopore cable protection pipe lower extreme is twisted on the screwed pipe of the right side vertical pipe upper portion of diplopore U type cable protection return bend, realizes that diplopore cable protection pipe and diplopore U type cable protection return bend are connected.

The utility model has the advantages that: the complex, time-consuming and labor-consuming processes of the right-angle elbow and the short pipe are avoided, the construction and installation speed is high, time and labor are saved, the engineering is attractive, half of pipes and bent pipes can be saved when the device with the partition plates is used, half of working hours and cost are saved, the main cable and the user cable are provided with independent and mutually-insulated cable passage holes in the device, the occurrence of short-circuit accidents caused by overheating between the main cable and the user cable in the device is thoroughly avoided, and the device has new improvement in the aspects of technology, construction, installation and maintenance and economic benefit. Further ensuring the quality and rapid development of rural household table construction and transformation.

Because pipe, left cable through hole and right cable through hole in the middle of the base of three hole waterproof elbow all set up down to the base is installed in the lower border of upper cover, so waterproof, dustproof effect is very good, and the visual display main cable left side advances user cable right side and goes out.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic view of a three-hole waterproof elbow in the present utility model;

FIG. 3 is a schematic diagram of the upper cover structure of the three-hole waterproof elbow in the utility model;

FIG. 4 is a schematic view of a three-hole waterproof elbow base perspective structure according to the present utility model;

FIG. 5 is a schematic view of the front view of the base of the three-hole waterproof elbow of the present utility model;

FIG. 6 is a schematic diagram of the front view of a dual hole cable protection tube in accordance with the present utility model;

FIG. 7 is a schematic bottom view of a dual hole cable protection tube of the present utility model;

FIG. 8 is a schematic diagram of the front view of a double-hole U-shaped cable protection elbow of the present utility model;

FIG. 9 is a schematic left-hand view of a double-hole U-shaped cable protection elbow of the present utility model;

FIG. 10 is a schematic top view of a double-hole U-shaped cable protection elbow of the present utility model;

FIG. 11 is a schematic diagram of the front view of the base of the double-hole U-shaped cable protection elbow of the present utility model;

FIG. 12 is a schematic top view of the base of the double-hole U-shaped cable protection elbow of the present utility model;

FIG. 13 is a schematic diagram of the front view of the main body of the double-hole U-shaped cable protection elbow of the present utility model;

FIG. 14 is a schematic bottom view of the body of the dual-hole U-shaped cable protection elbow of the present utility model;

fig. 15 is a schematic front view of a partition plate of a double-hole U-shaped cable protection elbow in the present utility model.

Detailed Description

The utility model is further described with reference to fig. 1-15;

referring to fig. 1, it comprises a three-hole waterproof elbow 1, a double-hole cable protection tube 2 and a double-hole U-shaped cable protection elbow 3; the three-hole waterproof elbow is connected to the upper end of the double-hole cable protection tube, and the double-hole U-shaped cable protection elbow is connected to the lower end of the double-hole cable protection tube.

Referring to fig. 2-5, the three-hole waterproof elbow comprises an upper cover 1-1, wherein the lower end of the upper cover is open, and a plurality of positioning pins 1-1-1 extending downwards are fixed at the top in the upper cover; the lower end of the upper cover is provided with a circle of lower edge 1-1-2, the inner wall of the upper end of the lower edge is fixed with the outer wall of the lower end of the upper cover, thus a base limiting table 1-1-3 is formed between the lower end of the upper cover and the upper end of the lower edge, and a plurality of lock holes 1-1-4 are arranged on the inner wall of the lower edge.

The cable protection device also comprises a base 1-2, the size of the base is matched with the size of the lower edge on the upper cover, the thickness of the base is the same as the height of the lower edge, the middle part of the base is fixedly provided with a circular tube 1-2-1 which is used as an interface of the porous cable protection tube, the upper surface of the circular tube is on the same plane with the upper surface of the base, and the lower end of the circular tube extends out of the base; screw holes 1-2-2 are symmetrically formed on two sides of a circular tube extending from the base; the upper end of the inner wall of the circular tube is fixed with a cable protection tube limiting table 1-2-3.

The base at the left side of the round tube is provided with a left cable through hole 1-2-4, the left edge of the base at the left side of the left cable through hole is provided with an opening, the opening is communicated with the left cable through hole, and the opening is a cable inlet and outlet; the right side of the round tube is provided with a right cable through hole 1-2-5, the right edge of the right side of the right cable through hole is provided with an opening, the opening is communicated with the right cable through hole, and the opening is a cable inlet and outlet; the round tube in the middle of the base of the three-hole waterproof elbow, the left cable through hole and the right cable through hole are all arranged downwards.

The base is provided with positioning holes 1-2-6 which are the same as the positioning pins on the upper cover in number and corresponding in position.

The side wall of the base is provided with first lock pins 1-2-7 at positions corresponding to the lock holes at the lower edge; the base is arranged in the lower edge of the upper cover, and the upper end of the base is propped against the base limiting table of the upper cover; each locating pin on the upper cover is inserted into each locating hole of the base respectively, and each first locking pin on the base is inserted into each locking hole at the lower edge of the upper cover respectively.

The upper cover and the lower edge are of an integral injection molding structure, and the base and the round tube are of an integral injection molding structure.

Referring to fig. 6-7, the double-hole cable protection tube comprises a tube body 2-1, an axial partition plate 2-2 is fixed in the tube body, the partition plate divides the tube body into two cavities, one is a main cable channel, the other is a user cable channel, the upper end of the partition plate extends out of the tube body for 30mm, and a nut 2-3 of a quick connector is arranged at the lower end of the tube body.

The upper end of the double-hole cable protection tube stretches into the circular tube of the base of the three-hole waterproof elbow and the upper end of the double-hole cable protection tube contacts with the cable protection tube limiting table in the circular tube, the double-hole cable protection tube is also provided with a screw hole at the position corresponding to the screw hole of the circular tube, the screw is screwed in the screw hole of the circular tube and the screw hole of the double-hole cable protection tube, the double-hole cable protection tube is connected with the base of the three-hole waterproof elbow more firmly, and the 30 millimeter part of the upper end of the partition plate stretches into the circular tube of the three-hole waterproof elbow.

Referring to fig. 8-15, the double-hole U-shaped cable protection elbow 3 includes an elbow base 3-1 and an elbow body 3-2;

the bent pipe base is a straight-edge elliptical groove body, the opening end of the groove body is the upper end face of the bent pipe base, namely the bent pipe base comprises a U-shaped long groove 3-1, the left end and the right end of the U-shaped long groove are respectively connected with an arc-shaped plug 3-1-2, two straight edges of the upper edge of the U-shaped long groove and two arc edges of the upper edge of the two arc-shaped plugs form a straight-edge ellipse, and the bent pipe base is of an integrated structure; a circle of straight-edge elliptic bosses 3-1-3 extending upwards are fixed on the upper edge of the elbow base; the top of the outer surface of the elbow base is fixed with a circle of first outer edge 3-1-4 extending outwards, a plurality of grooves 3-1-5 are formed in the first outer edge, and a second lock pin 3-1-6 is fixed in each groove.

The bent pipe main body 3-2 comprises a left vertical pipe 3-2-1, a bottom horizontal pipe 3-2-2 and a right vertical pipe 3-2-3 which are connected together, wherein the lower end face of the bottom horizontal pipe is in an open shape, the shape and the specification size of the bottom horizontal pipe are the same as those of the upper surface of a base, namely the lower end face of the bottom horizontal pipe is in a straight-sided oval shape, the left vertical pipe is fixed at the top of the left end of the bottom horizontal pipe, the right vertical pipe is fixed at the top of the right end of the bottom horizontal pipe, the left vertical pipe and the right vertical pipe are communicated with the bottom horizontal pipe, the left vertical pipe, the right vertical pipe, the bottom horizontal pipe and the bottom horizontal pipe are in an integrated structure, the upper part of the left vertical pipe is provided with threads 3-2-4, the threads are provided with nuts 3-2-5, the lower end of the threads are fixedly provided with flange discs 3-2-6, the upper part of the right vertical pipe is fixedly provided with the threads 3-2-7, the diameter of the threads is larger than that of the right vertical pipe, the inner wall of the lower end of the threads is fixedly arranged at the right vertical pipe at the top of the right vertical pipe, the inner wall of the two annular platforms are fixedly arranged at the inner diameter of the two annular platforms, the two annular platforms are positioned at the same annular platforms, the two annular platforms are fixedly arranged at the two annular platforms and the inner diameter ports are positioned at the two annular platforms, the two annular platforms are positioned at the upper ends of the annular platform, the upper end of the threaded platform, the threaded platform is adapted to the upper end of the threaded platform, and the upper end is provided with the two annular platform, and the upper end port is provided with the annular platform, and the two port; the lower end face of the pipe wall of the bottom horizontal pipe is provided with a circle of straight-edge elliptic slots 3-2-9 which are matched with the boss on the upper surface of the base, the bottom of the outer surface of the bottom horizontal pipe is provided with a circle of second outer edges 3-2-10 which extend outwards, a plurality of square locking plates 3-2-11 which extend downwards are fixed on the second outer edges, and each locking plate is provided with a locking hole 3-2-12.

The positions of the lock plates on the bottom horizontal pipe correspond to the positions of the grooves on the first outer edge of the base respectively, the positions of the lock holes on the lock plates correspond to the positions of the second lock pins on the base, and the thickness of the second outer edge of the bottom horizontal pipe is the same as that of the first outer edge of the base. The bent pipe base and the bent pipe main body are placed up and down, the straight-edge elliptical boss on the bent pipe base is inserted into the straight-edge elliptical slot of the bent pipe main body, and the second lock pin on the bent pipe base is inserted into the lock hole of the bent pipe main body, so that the base is connected with the bent pipe main body.

The U-shaped partition plate 3-3 is further included, namely the partition plate is composed of a left end vertical portion, a lower end horizontal portion and a right end vertical portion which are connected together, the width of the left end vertical portion is matched with the pipe diameter of the left side vertical pipe, the width of the right end vertical portion is matched with the pipe diameter of the right side vertical pipe, the left end vertical portion and the right end vertical portion of the partition plate are respectively fixed with the left end vertical pipe and the right end vertical pipe inner wall of the pipe bending main body when the partition plate is installed in the pipe bending main body, the left end vertical portion is exposed 30mm from the left end vertical pipe upper end of the pipe bending main body, the left end vertical portion is located in the middle of the left side vertical pipe of the pipe bending main body, the right end vertical portion is located in the middle of the right side vertical pipe of the pipe bending main body, the upper end vertical portion of the right end vertical portion is inserted into two slots of the annular spigot table at the bottom end of the inner wall of the threaded pipe, and the upper end of the right end vertical portion and the upper end of the right end vertical pipe is on the same plane, and therefore the U-shaped partition plate divides the inner space of the pipe bending main body into two front and rear channels, namely a main cable channel and a user cable channel.

The lower extreme of diplopore cable protection pipe stretches into in the screwed pipe of diplopore U type cable protection return bend right side vertical pipe upper portion to the baffle in the diplopore cable protection pipe aligns with the baffle in the U type cable protection return bend (i.e. the main cable passageway in the diplopore cable protection pipe is linked together with the main cable passageway in the U type cable protection return bend, the user cable passageway in the diplopore cable protection pipe is linked together with the user cable passageway in the U type cable protection return bend), the nut on the diplopore cable protection pipe lower extreme quick-operation joint is twisted on the screwed pipe of diplopore U type cable protection return bend right side vertical pipe upper portion, realizes that diplopore cable protection pipe and diplopore U type cable protection return bend are connected, the nut in have waterproof cushion and locking toper circle.

During construction, two holes at the bottom of an original household meter metering switch box 4 are changed into a round hole at the middle position, nuts on left vertical pipes of the double-hole U-shaped cable protection bent pipes are unscrewed, upper threaded parts of the left vertical pipes of the double-hole U-shaped cable protection bent pipes are inserted into the round holes at the bottom of the household meter metering switch box, 30mm of partition plates in the left vertical pipes are exposed and extend into the household meter metering switch box, flange discs on the left vertical pipes are tightly attached to the outer surface of a box bottom plate of the household meter metering switch box, and nuts are screwed on the threaded buckles inserted into the box body to the inner surface of the box bottom plate, so that the left vertical pipes are fixed on the household meter metering switch box.

And after connection, the upper cover of the three-hole waterproof elbow is taken down, and the base of the U-shaped cable protection elbow is taken down.

The main cable enters from the left cable through hole of the three-hole waterproof elbow base and then extends into the main cable channel of the double-hole cable protection tube through the round tube of the base, then enters into the main cable channel of the U-shaped cable protection elbow, and then extends into the metering switch box to be connected to the main switch. In the process of threading the cable, the main cable at the U-shaped bend can naturally enter a main cable channel in a horizontal tube at the bottom of the bent tube main body, and a plurality of user load cables coming out from the metering switch box extend out from a circular tube of the three-hole waterproof elbow base through a user cable channel of the U-shaped cable protection bent tube and a user cable channel of the double-hole cable protection tube, and then extend out from a right cable through hole of the three-hole waterproof elbow and are connected to a user porcelain bottle of a telegraph pole. In the process of threading the cable, the user cable at the U-shaped bend can naturally enter the user cable channel in the horizontal tube at the bottom of the bent tube main body. After the cable is installed, the locating pin of the upper cover of the three-hole waterproof elbow is aligned with the locating hole of the base, after the locating pin of the upper cover is slightly knocked, the locating pin of the upper cover falls into the locating hole of the base, and the first lock pin on the base enters into the lock hole at the lower edge of the upper cover at the same time, so that the upper cover and the base are firmly self-locked. The base of the U-shaped cable protection elbow is aligned with the lower part of the elbow main body and is beaten upwards, the linear oval boss at the top of the base is inserted into the linear oval concave slot at the lower part of the pipe main body, and meanwhile, all lock pins on the outer edge of the base automatically enter into square lock holes on the outer edge of the bottom of the elbow main body, and the lock is automatically positioned and automatically and firmly self-locked.

The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that it will be apparent to those skilled in the art that modifications and variations can be made without departing from the technical principles of the present utility model, and these modifications and variations should also be regarded as the scope of the utility model.

Claims (1)

1. The utility model provides a meter measurement switch bottom business turn over combination formula cable protection device, characterized by: the waterproof device comprises a three-hole waterproof elbow (1), a double-hole cable protection pipe (2) and a double-hole U-shaped cable protection elbow (3); the three-hole waterproof elbow is connected to the upper end of the double-hole cable protection tube, and the double-hole U-shaped cable protection elbow is connected to the lower end of the double-hole cable protection tube;

the three-hole waterproof elbow comprises an upper cover (1-1), wherein the lower end of the upper cover is open, and a plurality of positioning pins (1-1-1) extending downwards are fixed at the top in the upper cover; the lower end of the upper cover is provided with a circle of lower edge (1-1-2), the inner wall of the upper end of the lower edge is fixed with the outer wall of the lower end of the upper cover, thus a base limiting table (1-1-3) is formed between the lower end of the upper cover and the upper end of the lower edge, and a plurality of lock holes (1-1-4) are arranged on the inner wall of the lower edge;

the cable protection device also comprises a base (1-2), wherein the middle part of the base is fixedly provided with a circular tube (1-2-1) which is used as an interface of the porous cable protection tube, the upper surface of the circular tube is on the same plane with the upper surface of the base, and the lower end of the circular tube extends out of the base; screw holes (1-2-2) are symmetrically arranged on two sides of a circular tube extending from the base; a cable protection tube limit table (1-2-3) is fixed at the upper end of the inner wall of the circular tube;

a left cable through hole (1-2-4) is formed in the base at the left side of the round tube, an opening is formed in the left edge of the base at the left side of the left cable through hole, the opening is communicated with the left cable through hole, a right cable through hole (1-2-5) is formed in the base at the right side of the round tube, an opening is formed in the right edge of the base at the right side of the right cable through hole, and the opening is communicated with the right cable through hole; positioning holes (1-2-6) with the same number and corresponding positions as the positioning pins on the upper cover are arranged on the base;

a first lock pin (1-2-7) is arranged on the side wall of the base at the position corresponding to each lock hole at the lower edge; the base is arranged in the lower edge of the upper cover, and the upper end of the base is propped against the base limiting table of the upper cover; each positioning pin on the upper cover is inserted into each positioning hole of the base, and each first locking pin on the base is inserted into each locking hole at the lower edge of the upper cover;

the double-hole cable protection tube comprises a tube body (2-1), an axial baffle plate (2-2) is fixed in the tube body, the baffle plate divides the tube body into two cavities, one is a main cable channel, the other is a user cable channel, the upper end of the baffle plate extends out of the tube body, and a nut (2-3) is arranged at the lower end of the tube body;

the upper end of the double-hole cable protection tube extends into the circular tube of the base of the three-hole waterproof elbow, the upper end of the double-hole cable protection tube is in contact with the cable protection tube limiting table in the circular tube, the double-hole cable protection tube is also provided with a screw hole at the position corresponding to the screw hole of the circular tube, and the screw is screwed in the screw hole of the circular tube and the screw hole of the double-hole cable protection tube;

the double-hole U-shaped cable protection elbow (3) comprises an elbow base (3-1) and an elbow main body (3-2);

the bent pipe base is a straight-edge elliptical groove body, the opening end of the groove body is the upper end face of the bent pipe base, namely the bent pipe base comprises a U-shaped long groove (3-1-1), the left end and the right end of the U-shaped long groove are respectively connected with arc plugs (3-1-2), two straight edges at the upper edge of the U-shaped long groove and two arc edges at the upper edge of the two arc plugs form a straight-edge ellipse, and the bent pipe base is of an integrated structure; a circle of straight-edge elliptic bosses (3-1-3) extending upwards are fixed on the bent pipe base; a circle of first outer edges (3-1-4) extending outwards are fixed at the top of the outer surface of the elbow base, a plurality of grooves (3-1-5) are formed in the first outer edges, and a second lock pin (3-1-6) is fixed in each groove;

the bent pipe main body (3-2) comprises a left vertical pipe (3-2-1), a bottom horizontal pipe (3-2-2) and a right vertical pipe (3-2-3) which are connected together, wherein the lower end face of the bottom horizontal pipe is in an open shape, the shape and the specification size of the bottom horizontal pipe are the same as those of the upper surface of a base, namely, the lower end face of the bottom horizontal pipe is in a straight-sided ellipse, the left vertical pipe is fixed at the top of the left end of the bottom horizontal pipe, the right vertical pipe is fixed at the top of the right end of the bottom horizontal pipe, the left vertical pipe and the right vertical pipe are communicated with the bottom horizontal pipe, the left vertical pipe, the right vertical pipe and the bottom horizontal pipe are in an integrated structure, the upper part of the left vertical pipe is provided with threads (3-2-4), the screw thread is provided with a nut (3-2-5), the lower end of the screw thread is fixedly provided with a flange disc (3-2-6), the upper part of the right vertical pipe is fixedly provided with a screw thread pipe (3-2-7), the pipe diameter of the screw thread pipe is larger than that of the right vertical pipe, the inner wall of the lower end of the screw thread pipe is fixedly arranged on the outer wall of the upper end of the right vertical pipe, the outer diameter of the double-hole cable protection pipe is matched with the inner diameter of the screw thread pipe, the bottom end inside the screw thread pipe is provided with a ring-shaped spigot table (3-2-8), the outer end face of the ring-shaped spigot table is fixedly arranged on the inner wall of the screw thread pipe, the ring-shaped spigot table is provided with two slots, the two slots are positioned on the same straight line, and the openings of the two slots are positioned on the inner end face of the ring-shaped spigot table; the lower end face of the pipe wall of the bottom horizontal pipe is provided with a circle of straight-edge elliptical slots (3-2-9) which are matched with the boss on the upper surface of the base, the bottom of the outer surface of the bottom horizontal pipe is provided with a circle of second outer edges (3-2-10) which extend outwards, a plurality of square lock plates (3-2-11) which extend downwards are fixed on the second outer edges, and each lock plate is provided with a lock hole (3-2-12);

the positions of the lock plates on the bottom horizontal pipe correspond to the positions of the grooves on the first outer edge of the base respectively, the positions of the lock holes on the lock plates correspond to the positions of the second lock pins on the base, the straight-edge oval boss on the bent pipe base is inserted into the straight-edge oval slot of the bent pipe main body, and the second lock pins on the bent pipe base are inserted into the lock holes of the bent pipe main body to realize connection between the base and the bent pipe main body;

the U-shaped partition board (3-3) is formed by a left vertical part, a lower horizontal part and a right vertical part which are connected together, the width of the left vertical part is matched with the pipe diameter of the left vertical pipe, the width of the right vertical part is matched with the pipe diameter of the right vertical pipe, the partition board is arranged in the pipe bending main body, the left vertical part and the right vertical part of the partition board are respectively fixed with the inner walls of the left vertical pipe and the right vertical pipe of the pipe bending main body, wherein the left vertical part is exposed from the upper end of the left vertical pipe of the pipe bending main body, the left vertical part is positioned in the middle part of the left vertical pipe of the pipe bending main body, the right vertical part is positioned in the middle part of the right vertical pipe of the pipe bending main body, the upper end of the right vertical part is inserted into two slots of an annular spigot table at the bottom end of the inner wall of the threaded pipe, the upper end of the right vertical part is on the same plane with the upper end of the annular spigot table, and the U-shaped partition board divides the inner space of the pipe bending main body into a front channel and a rear channel, namely a main cable channel and a user cable channel;

the lower end of the double-hole cable protection pipe stretches into the threaded pipe at the upper part of the right vertical pipe of the double-hole U-shaped cable protection bent pipe, the partition plate in the double-hole cable protection pipe is aligned with the partition plate in the U-shaped cable protection bent pipe, and the nut at the lower end of the double-hole cable protection pipe is screwed on the threaded pipe at the upper part of the right vertical pipe of the double-hole U-shaped cable protection bent pipe.