CN210380123U

CN210380123U - MPP pipe with limit structure

Info

Publication number: CN210380123U
Application number: CN201921852939.5U
Authority: CN
Inventors: 黄建军
Original assignee: Hangzhou Taicheng Pipe Industry Co Ltd
Current assignee: Hangzhou Taicheng Pipe Industry Co Ltd
Priority date: 2019-10-31
Filing date: 2019-10-31
Publication date: 2020-04-21
Anticipated expiration: 2029-10-31

Abstract

The utility model discloses a MPP pipe with limit structure, including fire-retardant rubber layer and return spring, the inside on fire-retardant rubber layer is provided with the balloon, the mid-mounting on fire-retardant rubber layer has the body, and the inside of body is provided with the rubber pad, one side that the body axis was kept away from to the rubber pad is installed the briquetting, one side that the rubber pad was kept away from to the briquetting is installed miniature hydraulic cylinder, and the left and right sides of miniature hydraulic cylinder all installs buffer spring, one side that miniature hydraulic cylinder kept away from the briquetting is installed the spout, and the inside of spout is provided with the slider. This MPP pipe with limit structure is provided with briquetting, rubber pad and miniature hydraulic cylinder, under miniature hydraulic cylinder's effect, can effectually promote the briquetting and be close to each other for all closely laminate with the pencil between the rubber pad, the clamping-force is applyed to the pencil that the briquetting can be stable, thereby the position that can effectual restriction pencil.

Description

MPP pipe with limit structure

Technical Field

The utility model relates to a MPP manages technical field, specifically is a MPP pipe with limit structure.

Background

The MPP pipe is also called MPP power cable protection pipe and is divided into excavation type and non-excavation type, and the MPP non-excavation pipe is also called MPP pipe or support stay pipe. The MPP pipe adopts modified polypropylene as a main raw material. The high-temperature-resistant and external-pressure-resistant cable duct has the characteristics of high temperature resistance and external pressure resistance, and is suitable for cable duct pipes of high-voltage transmission lines of more than 10 KV.

The current MPP pipe is in the use, and the pencil breaks away from easily taking place between managing with the MPP for the MPP pipe can't carry out effectual protection to the pencil, and the pencil that can not be fine provides stable buffering protection, and can not be fine alleviate the influence of flame to the MPP pipe, can not be fine satisfy people's user demand, to above-mentioned condition, carry out technical innovation on current MPP pipe basis.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a MPP pipe with limit structure to it is current to provide in solving above-mentioned background art, the user demand problem that satisfies people that can not be fine.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a MPP pipe with limit structure, includes fire-retardant rubber layer and return spring, the inside on fire-retardant rubber layer is provided with the balloon, the mid-mounting on fire-retardant rubber layer has the body, and the inside of body is provided with the rubber pad, one side that the body axis was kept away from to the rubber pad is installed the briquetting, one side that the rubber pad was kept away from to the briquetting is installed miniature hydraulic cylinder, and miniature hydraulic cylinder's the left and right sides all installs buffer spring, miniature hydraulic cylinder keeps away from one side of briquetting and installs the spout, and the inside of spout is provided with the slider, return spring's inside runs through there is the spacer pin, and return spring all is located both.

Preferably, the inner wall surface of the flame-retardant rubber layer is tightly attached to the outer wall surface of the pipe body, and the air rings are uniformly distributed along the inside of the flame-retardant rubber layer.

Preferably, the pipe body forms an elastic structure with the sliding block through the sliding groove, and the inner size structure of the sliding block is matched with the outer size structure of the sliding block.

Preferably, the pipe body forms an elastic structure with the sliding block through the matching between the return spring and the limiting pin, and the return spring and the limiting pin are symmetrically distributed about the central axis of the sliding block.

Preferably, the pressing block and the sliding block form an elastic structure through the buffer springs, and the buffer springs are symmetrically distributed around the vertical center line of the sliding block.

Preferably, the outer wall surface of the rubber pad and the outer wall surface of the pressing block are locally and tightly attached, the cross sections of the pressing block and the rubber pad are both arc-shaped, and the pressing block, the rubber pad and the micro hydraulic oil cylinder are symmetrically distributed around the horizontal center line of the pipe body.

Compared with the prior art, the beneficial effects of the utility model are as follows:

1. the utility model discloses be provided with fire-retardant rubber layer, fire-retardant rubber layer can effectually provide the fire-retardant protective layer of one deck for the body, avoids the body directly to receive the firing of external flame, leads to the body to ignite, makes the pencil in the body suffer damage, and fire-retardant rubber layer receives the extrusion or the collision of external object, and fire-retardant rubber layer takes place deformation under the effect of external force, is used for buffering the external force exerted, and the balloon can the certain deformation volume of fire-retardant rubber layer of effectual holding, thereby can effectually alleviate the influence of external force to fire-retardant rubber layer;

2. the utility model discloses be provided with buffer spring, can effectual buffering through buffer spring's symmetric distribution exert the external force of body, can effectually provide reliable buffering protection for the pencil, and can make miniature hydraulic cylinder can obtain long-term utilization, be provided with return spring, the pulling force acts on the slider, make the slider compress return spring along the axis direction of spacer pin, and the spout can the effectual removal orbit of control slider, avoid the slider to produce the incline, thereby can effectual buffering the pulling force that the pencil received, avoid pulling the dynamics too big, lead to the pencil fracture;

3. the utility model discloses be provided with briquetting, rubber pad and miniature hydraulic cylinder, under miniature hydraulic cylinder's effect, can effectually promote the briquetting and be close to each other for all closely laminate with the pencil between the rubber pad, the clamping-force is applyed to the pencil that the briquetting can be stable, thereby can effectual restriction pencil the position, and the rubber pad can effectual increase pencil and the production of briquetting between the friction dynamics of phenomenon of slipping is avoided to the pencil.

Drawings

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

fig. 2 is a schematic diagram of the distribution structure of the return springs of the present invention;

fig. 3 is a schematic view of the surface structure of the rubber pad of the present invention.

In the figure: 1. a flame retardant rubber layer; 2. a balloon; 3. a slider; 4. a pipe body; 5. briquetting; 6. a rubber pad; 7. a chute; 8. a buffer spring; 9. a miniature hydraulic cylinder; 10. a return spring; 11. and a limiting pin.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: an MPP pipe with a limiting structure comprises a flame-retardant rubber layer 1 and a return spring 10, wherein a balloon 2 is arranged inside the flame-retardant rubber layer 1, a pipe body 4 is arranged in the middle of the flame-retardant rubber layer 1, a rubber pad 6 is arranged inside the pipe body 4, the inner wall surface of the flame-retardant rubber layer 1 is tightly attached to the outer wall surface of the pipe body 4, the balloon 2 is uniformly distributed along the inside of the flame-retardant rubber layer 1, the flame-retardant rubber layer 1 can effectively provide a flame-retardant protective layer for the pipe body 4 to prevent the pipe body 4 from being directly ignited by external flame, so that a wire harness inside the pipe body 4 is damaged, when the flame-retardant rubber layer 1 is extruded or collided by an external object, the flame-retardant rubber layer 1 deforms under the action of external force to buffer the applied external force, and at the moment, the balloon 2 can effectively contain a, thereby effectively reducing the influence of external force on the flame-retardant rubber layer 1;

a pressing block 5 is arranged on one side of a rubber pad 6, which is far away from the central axis of a tube body 4, a miniature hydraulic oil cylinder 9 is arranged on one side of the pressing block 5, which is far away from the rubber pad 6, buffer springs 8 are arranged on the left side and the right side of the miniature hydraulic oil cylinder 9, the pressing block 5 and a sliding block 3 form an elastic structure through the buffer springs 8, the buffer springs 8 are symmetrically distributed about the vertical central line of the sliding block 3, when an MPP tube is extruded by external force, the external force applied to the tube body 4 can be effectively buffered through the symmetric distribution of the buffer springs 8, reliable buffering protection can be effectively provided for a wire harness, the miniature hydraulic oil cylinder 9 can be utilized for a long term, a sliding groove 7 is arranged on one side of the miniature hydraulic oil cylinder 9, which is far away from the pressing block 5, the sliding block 3 is arranged inside the sliding groove 7, the, when a wire harness inside the MPP is pulled by an external force, the pulling force acts on the sliding block 3 at the moment, so that the sliding block 3 moves along the central axis direction of the sliding groove 7, the sliding groove 7 can effectively control the moving track of the sliding block 3, and the sliding block 3 is prevented from deflecting;

the outer wall surface of the rubber pad 6 is locally and closely attached to the outer wall surface of the pressing block 5, the cross sections of the pressing block 5 and the rubber pad 6 are respectively of an arc-shaped structure, the pressing block 5, the rubber pad 6 and the micro hydraulic oil cylinder 9 are symmetrically distributed around the horizontal center line of the tube body 4, the pressing block 5 can be effectively pushed to approach each other under the action of the micro hydraulic oil cylinder 9, so that the rubber pads 6 are closely attached to the wire harness, at the moment, the pressing block 5 can stably apply clamping force to the wire harness, the position of the wire harness can be effectively limited, the rubber pad 6 can effectively increase the friction force between the wire harness and the pressing block 5, the phenomenon that the wire harness slips is avoided, the limiting pin 11 penetrates through the inside of the return spring 10, the return springs 10 are located at the front end and the rear end of the sliding block 3, and the tube body 4 forms an elastic structure with, and the central axis symmetric distribution about the slider 3 between return spring 10 and the spacer pin 11 for slider 3 compresses return spring 10 along the axis direction of spacer pin 11, can effectual buffering pencil receive drag power, avoids dragging the dynamics too big, leads to the pencil fracture.

The working principle is as follows: when the MPP pipe with the limiting structure is used, firstly, the miniature hydraulic oil cylinder 9 is started, so that the miniature hydraulic oil cylinder 9 pushes the pressing blocks 5 to be close to each other until the rubber pads 6 are tightly attached to the wire harness, and at the moment, the pressing blocks 5 can stably apply clamping force to the wire harness, so that the position of the wire harness can be effectively limited;

secondly, when the wire harness inside the MPP is pulled by external force, at the moment, the pulling force acts on the sliding block 3, so that the sliding block 3 moves along the central axis direction of the sliding groove 7 to compress the return spring 10, and at the moment, the return spring 10 can effectively buffer the pulling force on the wire harness;

finally, the flame-retardant rubber layer 1 can effectively provide a flame-retardant protective layer for the pipe body 4, and the pipe body 4 is prevented from being directly ignited by external flame, so that the MPP pipe with the limiting structure works.

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 MPP pipe with limit structure, includes fire-retardant rubber layer (1) and return spring (10), its characterized in that: the fire-retardant rubber layer (1) inside is provided with balloon (2), the mid-mounting on fire-retardant rubber layer (1) has body (4), and the inside of body (4) is provided with rubber pad (6), one side that body (4) axis was kept away from in rubber pad (6) is installed briquetting (5), miniature hydraulic cylinder (9) are installed to one side that rubber pad (6) were kept away from in briquetting (5), and all install buffer spring (8) in the left and right sides of miniature hydraulic cylinder (9), one side that briquetting (5) were kept away from in miniature hydraulic cylinder (9) is installed spout (7), and the inside of spout (7) is provided with slider (3), the inside of return spring (10) is run through there is spacer pin (11), and return spring (10) all are located both ends around slider (3).

2. The MPP tube with a limiting structure of claim 1, wherein: the inner wall surface of the flame-retardant rubber layer (1) is tightly attached to the outer wall surface of the pipe body (4), and the air rings (2) are uniformly distributed along the inner part of the flame-retardant rubber layer (1).

3. The MPP tube with a limiting structure of claim 1, wherein: the pipe body (4) forms an elastic structure with the sliding block (3) through the sliding groove (7), and the inner size structure of the sliding block (3) is matched with the outer size structure of the sliding block (3).

4. The MPP tube with a limiting structure of claim 1, wherein: the pipe body (4) and the sliding block (3) form an elastic structure through the matching between the return spring (10) and the limiting pin (11), and the return spring (10) and the limiting pin (11) are symmetrically distributed about the central axis of the sliding block (3).

5. The MPP tube with a limiting structure of claim 1, wherein: the pressing block (5) and the sliding block (3) form an elastic structure through the buffer springs (8), and the buffer springs (8) are symmetrically distributed around the vertical center line of the sliding block (3).

6. The MPP tube with a limiting structure of claim 1, wherein: the outer wall surface of the rubber pad (6) is locally and tightly attached to the outer wall surface of the pressing block (5), the cross sections of the pressing block (5) and the rubber pad (6) are of arc-shaped structures, and the pressing block (5), the rubber pad (6) and the miniature hydraulic oil cylinder (9) are symmetrically distributed about the horizontal center line of the pipe body (4).