CN111900682A

CN111900682A - MPP power cable protection tube of high stability

Info

Publication number: CN111900682A
Application number: CN202010662002.2A
Authority: CN
Inventors: 蔡军; 郑刚
Original assignee: Hangzhou Panhua Electric Power Technology Co ltd
Current assignee: Hangzhou Panhua Electric Power Technology Co ltd
Priority date: 2020-07-10
Filing date: 2020-07-10
Publication date: 2020-11-06
Anticipated expiration: 2040-07-10
Also published as: CN111900682B

Abstract

The invention discloses a high-stability MPP power cable protection tube, which comprises a tube body, a connecting sleeve and an embedding groove, wherein the two sides of the connecting sleeve are symmetrically provided with the tube body, the inner sides of the two ends of the connecting sleeve are symmetrically provided with the embedding groove, the end part of the tube body is matched and clamped with the embedding groove, the outer wall of the end part of the tube body is fixed with a ring body, the outer wall of the tube body is positioned at one side of the ring body close to the connecting sleeve and is equidistantly fixed with a toothed ring, the outer wall of the connecting sleeve is symmetrically and rotatably provided with four groups of rotatably expanded buckling devices, the buckling devices are matched and clamped with the toothed rings, a pull-connection mechanism which is engaged and telescopically adjusted is connected between the buckling devices, the MPP power cable protection tube changes the traditional hot melting connection mode, adopts the connecting sleeve as an adapter of the tube body, and is matched, and the compression strength is higher, and the use is more stable.

Description

MPP power cable protection tube of high stability

Technical Field

The invention relates to the technical field of MPP power cable protection pipes, in particular to a high-stability MPP power cable protection pipe.

Background

The MPP power pipe is divided into a common type and a reinforced type, the reinforced type is divided into an excavated pipe and a non-excavated pipe, and the MPP non-excavated pipe is also called as an MPP jacking pipe, an MPP supporting and pulling pipe and an MPP traction pipe.

Traditional MPP is welding machine for power cable protection pipe hot melt welding butt joint, and the splice point is about 200 degrees, can not exceed 220 degrees, reaches the back when the temperature, can the butt joint of both ends, and this kind of connected mode still does not have body intensity great itself, and the connection position is receiving the easy fracture after the extrusion frequently, influences normal use.

Therefore, we propose an MPP power cable protection tube with high stability.

Disclosure of Invention

The invention aims to provide an MPP power cable protection tube with stable connection part, which solves the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a high stability's MPP power cable protection pipe, includes body, adapter sleeve and scarf joint groove, adapter sleeve bilateral symmetry is equipped with the body, the scarf joint groove has been seted up to the inboard symmetry in adapter sleeve both ends, and body tip and scarf joint groove cooperation joint, body tip outer wall is fixed with the ring body, and the body outer wall is located the ring body and is fixed with the ring gear near adapter sleeve one side equidistance, adapter sleeve outer wall symmetry is rotated and is installed four lock joint devices that rotate the expansion of group, and lock joint device and ring gear cooperation joint, connect between the lock joint device and install the flexible mechanism that draws of adjusting of meshing.

Preferably, the fastening device includes slat, tooth piece, counter sink, first screw and first screw, the slat rotates with adapter sleeve to be connected, the slat surface is located the ring gear and corresponds the position and be fixed with the tooth piece, and tooth piece and ring gear joint, the counter sink has been seted up to the slat tip, ring body surface is located the counter sink and corresponds the position and seted up first screw, the downthehole interlude of counter sink has first screw, and first screw is connected with first screw meshing.

Preferably, draw and connect the mechanism and include two-way silk section of thick bamboo, silk post, slider, swivel mount and spiral shell section of thick bamboo, the swivel mount is fixed on the slat surface, and the swivel mount inboard rotates and installs the silk post, be equipped with two-way silk section of thick bamboo between the silk post, screw thread has all been seted up to two-way silk section of thick bamboo port inboard, and the silk post is connected with two-way silk section of thick bamboo meshing, the inside symmetry of two-way silk section of thick bamboo slides and is provided with the slider, and silk post and slider fixed connection.

Preferably, the inner side of the end opening of the pipe body is provided with an inclined plane matched with the scarf joint groove, and the end opening of the pipe body is matched and spliced with the scarf joint groove.

Preferably, the inner wall of the connecting sleeve is equidistantly fixed with a sealing ring, and the sealing ring is in sealing fit with the outer wall of the pipe body.

Preferably, a cylinder shell is sleeved outside the pipe body and the connecting sleeve, through holes are symmetrically formed in the surface of the cylinder shell at positions corresponding to the ring body, second screw holes are symmetrically formed in the surface of the ring body, second screws penetrate through the through holes and are connected with the second screw holes in a meshed mode, sealing layers are symmetrically bonded on the inner sides of two ends of the cylinder shell, and the sealing layers are fixedly bonded with the outer wall of the pipe body.

Preferably, the sealing layer is made of elastic spandex composite cloth.

Preferably, the diameter of the inner wall of the connecting sleeve is the same as that of the inner wall of the pipe body.

Compared with the prior art, the invention has the beneficial effects that:

the MPP power cable protection tube changes the traditional hot melt connection mode, adopts the connection sleeve as the connection body of the tube body, and matches the buckling device and the pulling mechanism to enable the tube body and the connection sleeve to be stably clamped and positioned, thereby not only having better sealing performance, but also having larger compressive strength and more stable use.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the external structure of the present invention;

FIG. 3 is a schematic view of a fitting and inserting structure of the pipe body and the connection sleeve according to the present invention;

FIG. 4 is a schematic view of the scarf groove of the present invention;

FIG. 5 is a schematic view of a fastening device according to the present invention;

fig. 6 is a schematic structural view of the pulling mechanism of the present invention.

In the figure: 1. a pipe body; 2. connecting a sleeve; 21. embedding grooves; 22. a seal ring; 3. a ring body; 4. a toothed ring; 5. a fastening device; 51. laths; 52. a tooth block; 53. a countersunk hole; 54. a first screw; 55. a first screw hole; 6. a pulling connection mechanism; 61. a bidirectional filament tube; 62. silk poles; 63. a slider; 64. rotating; 65. a screw cylinder; 7. a cartridge housing; 8. a sealing layer; 9. a second screw hole; 91. a through hole; 92. a second screw.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, in the figure, the MPP power cable protection tube with high stability includes a tube body 1, a connection sleeve 2 and an embedding groove 21, the tube body 1 is symmetrically disposed on two sides of the connection sleeve 2, the embedding groove 21 is symmetrically disposed on inner sides of two ends of the connection sleeve 2, the end of the tube body 1 is matched and clamped with the embedding groove 21, a ring body 3 is fixed on an outer wall of the end of the tube body 1, a tooth ring 4 is equidistantly fixed on the outer wall of the tube body 1, the outer wall of the connection sleeve 2 is symmetrically and rotatably mounted with four sets of fastening devices 5 which are rotationally expanded, the fastening devices 5 are matched and clamped with the tooth ring 4, and a pull-connection mechanism 6 which is engaged and telescopically adjusted is connected and mounted between the fastening devices 5.

Referring to fig. 5, the fastening device 5 includes a slat 51, a tooth block 52, a counter bore 53, a first screw 54 and a first screw hole 55, the slat 51 is rotatably connected to the connecting sleeve 2, the tooth block 52 is fixed on the surface of the slat 51 at a position corresponding to the tooth ring 4, the tooth block 52 is fastened to the tooth ring 4, the counter bore 53 is formed in the end of the slat 51, the first screw hole 55 is formed on the surface of the ring body 3 at a position corresponding to the counter bore 53, the first screw 54 is inserted into the counter bore 53, the first screw 54 is engaged with the first screw hole 55, after the pipe body 1 and the connecting sleeve 2 are inserted, the slat 51 is attached to the surface of the pipe body 1, the first screw 54 is fixed to the first screw hole 55 through the counter bore 53, and the insertion limit of the pipe body 1 is achieved by fastening the tooth block 52 to the tooth ring 4.

Referring to fig. 6, the pulling and connecting mechanism 6 includes a bidirectional screw cylinder 61, screw posts 62, a sliding block 63, a rotation seat 64 and a screw cylinder 65, the rotation seat 64 is fixed on the surface of the lath 51, the screw posts 62 are rotatably mounted on the inner side of the rotation seat 64, the bidirectional screw cylinders 61 are arranged between the screw posts 62, the inner sides of the ports of the bidirectional screw cylinders 61 are both provided with threads, the screw posts 62 are engaged and connected with the bidirectional screw cylinder 61, the sliding blocks 63 are symmetrically slidably arranged in the bidirectional screw cylinder 61, the screw posts 62 are fixedly connected with the sliding block 63, the length adjustment of the pulling and connecting mechanism 6 is realized by the engagement of the screw posts 62 and the bidirectional screw cylinder 61, the supporting length between the laths 51 is fixed by the engagement of the screw cylinder 65 and the screw posts 62, and the holding force is increased for the joint and buckling of.

Referring to fig. 4, the inner side of the end opening of the pipe body 1 is provided with an inclined surface shape matched with the scarf groove 21, and the end opening of the pipe body 1 is matched and spliced with the scarf groove 21, so that the splicing and attaching stability is increased, and the butt joint precision is improved.

Referring to fig. 4, the inner wall of the connection sleeve 2 is equidistantly fixed with a sealing ring 22, and the sealing ring 22 is in sealing fit with the outer wall of the pipe body 1, so that the splicing part of the pipe body 1 and the connection sleeve 2 is sealed, and the internal cable is protected in a sealing manner.

Referring to fig. 1 and 2, a cylinder shell 7 is sleeved outside the pipe body 1 and the connection sleeve 2, through holes 91 are symmetrically formed in the surface of the cylinder shell 7 at positions corresponding to the ring body 3, second screw holes 9 are symmetrically formed in the surface of the ring body 3, second screws 92 are inserted into the through holes 91, the second screws 92 are meshed with the second screw holes 9 and connected, sealing layers 8 are symmetrically adhered to the inner sides of the two ends of the cylinder shell 7, the sealing layers 8 are fixedly adhered to the outer wall of the pipe body 1, the cylinder shell 7 is sleeved outside the connection position after the pipe body 1 is connected, the second screws 92 penetrate through the through holes 91 and the second screw holes 9 to be fixed, and then the sealing layers 8 are packaged at the two ends of the cylinder shell 7 by glue to achieve sealing protection of the connection position.

The sealing layer 8 is made of elastic spandex composite cloth, elastic deformation is good, the port of the cylinder shell 7 can be sealed stably, and sundries are prevented from entering the cylinder shell 7 during landfill.

Referring to fig. 3, the diameter of the inner wall of the connection sleeve 2 is the same as that of the inner wall of the tube 1, so as to prevent the cable from being jammed during insertion.

In this scheme, use body 1 to insert in the scarf joint groove 21 of adapter sleeve 2 inside, pull slat 51 and body 1 surface laminating, it is fixed with first screw 55 to use first screw 54 to pass counter sink 53, the grafting to body 1 is realized spacing through the joint of tooth piece 52 with ring gear 4, then length between 6 fixed slats 51 through drawing the mechanism of connecing, overlap cartridge case 7 in the connection site outside, use second screw 92 to pass through-hole 91 and second screw 9 and fix, then use the glue solution to encapsulate sealing layer 8 at cartridge case 7 both ends, the realization is to the sealed protection at connection site.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a high stability's MPP power cable protection pipe, includes body (1), connecting sleeve (2) and scarf joint groove (21), connecting sleeve (2) bilateral symmetry is equipped with body (1), scarf joint groove (21) have been seted up to connecting sleeve (2) both ends inboard symmetry, and body (1) tip and scarf joint groove (21) cooperation joint, its characterized in that: body (1) tip outer wall is fixed with ring body (3), and body (1) outer wall is located ring body (3) and is close to adapter sleeve (2) one side equidistance and be fixed with ring gear (4), adapter sleeve (2) outer wall symmetry is rotated and is installed four groups and rotate fastening device (5) of expansion, and fastening device (5) and ring gear (4) cooperation joint, connect between fastening device (5) and install the flexible mechanism (6) that adjusts that draw of meshing.

2. The MPP power cable protection tube with high stability of claim 1, wherein: fastening device (5) include slat (51), tooth piece (52), counter sink (53), first screw (54) and first screw (55), slat (51) rotate with connecting sleeve (2) and are connected, slat (51) surface is located ring gear (4) and corresponds position and is fixed with tooth piece (52), and tooth piece (52) and ring gear (4) joint, counter sink (53) have been seted up to slat (51) tip, ring body (3) surface is located counter sink (53) and has been seted up first screw (55) corresponding position, it has first screw (54) to cross-insert in counter sink (53), and first screw (54) are connected with first screw (55) meshing.

3. The MPP power cable protection tube with high stability of claim 2, wherein: draw and connect mechanism (6) including two-way silk section of thick bamboo (61), silk post (62), slider (63), swivel mount (64) and spiral shell section of thick bamboo (65), swivel mount (64) are fixed on slat (51) surface, and swivel mount (64) inboard rotation installs silk post (62), be equipped with two-way silk section of thick bamboo (61) between silk post (62), two-way silk section of thick bamboo (61) port inboard is all seted up threadedly, and silk post (62) are connected with two-way silk section of thick bamboo (61) meshing, the inside symmetry slip of two-way silk section of thick bamboo (61) is provided with slider (63), and silk post (62) and slider (63) fixed connection.

4. The MPP power cable protection tube with high stability of claim 1, wherein: the inner side of the port of the pipe body (1) is provided with an inclined plane shape matched with the scarf groove (21), and the port of the pipe body (1) is matched and spliced with the scarf groove (21).

5. The MPP power cable protection tube with high stability of claim 1, wherein: the connecting sleeve (2) inner wall equidistance is fixed with sealing washer (22), and sealing washer (22) and body (1) outer wall sealing laminating.

6. The MPP power cable protection tube with high stability of claim 1, wherein: body (1) and connecting sleeve (2) outside cover are equipped with shell (7), through-hole (91) are seted up to shell (7) surface position in ring body (3) corresponding position symmetry, second screw (9) have been seted up to ring body (3) surface symmetry, through-hole (91) interlude has second screw (92), and second screw (92) are connected with second screw (9) meshing, shell (7) both ends inboard symmetry bonds and has sealing layer (8), and sealing layer (8) and body (1) outer wall fixed bonding.

7. The MPP power cable protection tube with high stability of claim 6, wherein: the sealing layer (8) is made of elastic spandex composite cloth.

8. The MPP power cable protection tube with high stability of claim 1, wherein: the diameter of the inner wall of the connecting sleeve (2) is the same as that of the inner wall of the pipe body (1).