阅读说明：本技术 一种天然气输送管道工程铺设建立方法 (Natural gas conveying pipeline engineering laying and building method ) 是由 陈小风 李西华 于 2019-12-02 设计创作，主要内容包括：本发明公开了一种天然气输送管道工程铺设建立方法,涉及工程施工技术领域,包括以下几个步骤：S1、挖掘基坑,在地面开挖用于铺设地面天然气输送管道的基坑,基坑开口朝上,基坑壁与基坑底面垂直；S2、安装基座,将步骤S1中已开挖完成的基坑内放置用于支撑天然气输送管道的基座,基座安装固定在基坑底面的中间位置；S3、管道准备,将天然气输送管道放置在步骤1中已开挖完成的基坑附近。本发明通过绳索将天然气管道快速放置在基坑内,通过两侧的支架伸展,对放置在基坑内天然气管道位置进行二级微调,使天然气管道与基座贴合更紧密,提高天然气管道的放置牢固性。(The invention discloses a natural gas conveying pipeline engineering laying and establishing method, which relates to the technical field of engineering construction and comprises the following steps: s1, excavating a foundation pit, excavating the foundation pit on the ground for laying the ground natural gas conveying pipeline, wherein the opening of the foundation pit is upward, and the wall of the foundation pit is vertical to the bottom surface of the foundation pit; s2, mounting a base, namely placing the base for supporting the natural gas conveying pipeline in the foundation pit excavated in the step S1, and mounting and fixing the base at the middle position of the bottom surface of the foundation pit; and S3, preparing a pipeline, and placing the natural gas conveying pipeline near the foundation pit excavated in the step 1. According to the natural gas pipeline positioning device, the natural gas pipeline is quickly placed in the foundation pit through the rope, the supports on the two sides are extended, and the position of the natural gas pipeline placed in the foundation pit is subjected to secondary fine adjustment, so that the natural gas pipeline is tightly attached to the base, and the placement firmness of the natural gas pipeline is improved.)

1. A natural gas conveying pipeline engineering laying and building method is characterized by comprising the following steps:

s1, excavating a foundation pit, excavating the foundation pit on the ground for laying the ground natural gas conveying pipeline, wherein the opening of the foundation pit is upward, and the wall of the foundation pit is vertical to the bottom surface of the foundation pit;

s2, mounting a base, namely placing the base for supporting the natural gas conveying pipeline in the foundation pit excavated in the step S1, and mounting and fixing the base at the middle position of the bottom surface of the foundation pit;

s3, preparing a pipeline, namely placing a natural gas conveying pipeline near the foundation pit excavated in the step 1;

s4, installing a pipeline, namely pushing the natural gas conveying pipeline placed near the foundation pit in the step S3 to roll on the ground near the foundation pit, and rolling the natural gas conveying pipeline into a base of the foundation pit from the ground;

s5, filling the foundation pit, namely, putting muck into the foundation pit with the natural gas conveying pipeline in the step 4, and filling the foundation pit with the muck to level the top surface of the foundation pit with the ground;

the natural gas transportation pipeline engineering laying and establishing method in the steps S1-S5 is specifically completed by a natural gas transportation pipeline engineering laying device, the natural gas transportation pipeline engineering laying device comprises supports arranged on two sides of a foundation pit and a plurality of tractors fixedly arranged on one side of the foundation pit, the tractors are linearly and equidistantly fixed on one side of the foundation pit, each tractor is independently wound with a rope, the other end of each rope is fixed on the other side of the foundation pit, a plurality of rope buckles are fixed on the ground on the other side of the foundation pit, each rope is fixed on one of the rope buckles,

the rope buckle comprises a rope buckle body and rope piles, a base of a right-angle structure is arranged at the bottom end of the rope buckle body, the rope piles which are vertical to the base are fixed at the top end of the base, the base is fixed on the ground through screws, a through round hole is formed in the top end of the rope buckle body and located at the positions of the screws, a bent arc-shaped surface is arranged on one side wall of the rope buckle body, a square-hole-shaped bayonet is arranged at the top end of the other side wall of the rope buckle body, a movable plate of an arc-shaped structure is clamped in the bayonet, a through rope hole is formed in the middle of the movable plate, the rope hole is a long hole, and a rope penetrates through the rope hole and is fixed on the rope;

each tractor comprises a cylindrical traction roller, shaft levers are mounted at the axis positions of the traction rollers, the traction rollers and the shaft levers are connected into a whole, the shaft levers at the two ends of each traction roller are fixed on a rack through rolling bearings, the shaft levers at the two ends of each traction roller penetrate through the rack and extend out, bottom feet are arranged at the bottom of the rack, and the bottom feet at the bottom of the rack are locked on the ground through screws;

the two adjacent tractors are connected through a coupler, the coupler is installed at the connecting position of shaft rods of the two adjacent tractors, a driven gear is installed on the shaft rod of the tractor at one end, a servo motor is installed at the bottom of the shaft rod, a driving gear is installed on an output shaft of the servo motor, and the driving gear is meshed with the driven gear through a rack.

2. The natural gas transportation pipeline engineering laying and building method according to claim 1, characterized in that: the support comprises fixed support rods, the fixed support rods are vertically fixed on the bottom surface of the foundation pit and located on two sides of the base, the top ends of the fixed support rods are hinged with fourth support rods, the bottom ends of the fourth support rods are hinged with third support rods and first support rods, the other ends of the third support rods are hinged with second support rods, and the other ends of the second support rods are hinged to the middle parts of the fixed support rods;

the bottom end of the first supporting rod is hinged to the bottom end of the fixed supporting rod, a fifth supporting rod is hinged to the middle of the first supporting rod, and the top end of the fifth supporting rod is hinged to the middle of the fixed supporting rod;

the middle part of the fixed supporting rod is provided with a raised sleeve, the top end of the sleeve is provided with a cylindrical through hole, a transmission shaft is arranged in the through hole of the sleeve through a rolling bearing, a hexagonal column is arranged at the top end of the transmission shaft, the bottom end of the transmission shaft is connected with a universal shaft, the other end of the universal shaft is provided with a driving rod, the driving rod is a cylindrical rod, a fixing sleeve is arranged in the middle of the fixing support rod and above the second support rod, the axial center of the fixed sleeve is provided with a through round hole, the driving rod is arranged in the round hole of the fixed sleeve through a rolling bearing, the bottom end of the driving rod penetrates through the fixed sleeve, the outer circular surface of the driving rod penetrating through the fixed sleeve is provided with threads, the bottom end of the driving rod is connected to the top end of the nut sleeve through threaded engagement, and the bottom end of the nut sleeve is hinged to the middle of the second supporting rod.

3. The natural gas transportation pipeline engineering laying and building method according to claim 2, characterized in that: the side of the sleeve is provided with a disc-shaped base, the bottom surface of the base is provided with a plurality of sharp nails, and the top ends of the sharp nails gradually thicken towards the root parts.

4. The natural gas transportation pipeline engineering laying and building method according to claim 2, characterized in that: and the bottom end of the fifth supporting rod is provided with a roller.

5. The natural gas transportation pipeline engineering laying and building method according to claim 1, characterized in that: the rope pile is of a vertical cylindrical structure, and the outer wall of the rope pile is provided with a raised step.

6. The natural gas transportation pipeline engineering laying and building method according to claim 1, characterized in that: the rope fastener is characterized in that a square hole-shaped bayonet is formed in the top end of the other side wall of the rope fastener body, a raised clamping hook is arranged at the top end of the movable plate, the clamping hook is of a U-shaped structure, and the clamping hook is clamped in the square hole of the bayonet.

Technical Field

The invention relates to the technical field of pipeline construction, in particular to a natural gas conveying pipeline engineering laying and building method.

Background

Natural gas refers to all gases naturally occurring in nature, including gases formed by various natural processes in the air space, water space and rock space (including oil field gas, gas field gas, mud volcanic gas, coal bed gas, biogenetic gas and the like).

The natural gas is required to be conveyed after being collected, the natural gas is conveyed to a destination through the conveying pipeline, the natural gas conveying pipeline has two fixing modes, one mode is overhead, the other mode is landfill, and the natural gas pipeline is buried underground to guarantee the conveying safety of the natural gas pipeline.

When the natural gas pipeline is laid and constructed, because the natural gas pipeline is bulky, the natural gas pipeline is placed and is relatively troublesome to operate in the foundation ditch, and current, natural gas pipeline often uses the hoist to hoist natural gas pipeline placing, places again and accomplishes the hoist and mount in the foundation ditch, and the hoist and mount has following weak point, and concrete weak point lies in:

firstly, the hoisting is carried out by using a hoisting machine, and the cost is high.

Secondly, the crane is troublesome to operate during hoisting and high in danger, and the specific reason is that the crane needs to hoist the natural gas pipeline during hoisting so as to separate the natural gas pipeline from the ground.

Disclosure of Invention

The invention aims to provide a natural gas conveying pipeline engineering laying and establishing method, and solves the technical problems that a natural gas pipeline is large in size, is difficult to tie up firmly during binding, is easy to drop off when being lifted to be separated from the ground, and damages the ground or operators.

The technical problem to be solved by the invention is realized by adopting the following technical scheme: a natural gas conveying pipeline engineering laying and building method comprises the following steps:

s1, excavating a foundation pit, excavating the foundation pit on the ground for laying the ground natural gas conveying pipeline, wherein the opening of the foundation pit is upward, and the wall of the foundation pit is vertical to the bottom surface of the foundation pit;

s2, mounting a base, namely placing the base for supporting the natural gas conveying pipeline in the foundation pit excavated in the step S1, and mounting and fixing the base at the middle position of the bottom surface of the foundation pit;

s3, preparing a pipeline, namely placing a natural gas conveying pipeline near the foundation pit excavated in the step 1;

s4, installing a pipeline, namely pushing the natural gas conveying pipeline placed near the foundation pit in the step S3 to roll on the ground near the foundation pit, and rolling the natural gas conveying pipeline into a base of the foundation pit from the ground;

s5, filling the foundation pit, namely, putting muck into the foundation pit with the natural gas conveying pipeline in the step 4, and filling the foundation pit with the muck to level the top surface of the foundation pit with the ground;

the natural gas transportation pipeline engineering laying and establishing method in the steps S1-S5 is specifically completed by a natural gas transportation pipeline engineering laying device, the natural gas transportation pipeline engineering laying device comprises supports arranged on two sides of a foundation pit and a plurality of tractors fixedly arranged on one side of the foundation pit, the tractors are linearly and equidistantly fixed on one side of the foundation pit, each tractor is independently wound with a rope, the other end of each rope is fixed on the other side of the foundation pit, a plurality of rope buckles are fixed on the ground on the other side of the foundation pit, each rope is fixed on one of the rope buckles,

the rope buckle comprises a rope buckle body and rope piles, a base of a right-angle structure is arranged at the bottom end of the rope buckle body, the rope piles which are vertical to the base are fixed at the top end of the base, the base is fixed on the ground through screws, a through round hole is formed in the top end of the rope buckle body and located at the positions of the screws, a bent arc-shaped surface is arranged on one side wall of the rope buckle body, a square-hole-shaped bayonet is arranged at the top end of the other side wall of the rope buckle body, a movable plate of an arc-shaped structure is clamped in the bayonet, a through rope hole is formed in the middle of the movable plate, the rope hole is a long hole, and a rope penetrates through the rope hole and is fixed on the rope;

each tractor comprises a cylindrical traction roller, shaft levers are mounted at the axis positions of the traction rollers, the traction rollers and the shaft levers are connected into a whole, the shaft levers at the two ends of each traction roller are fixed on a rack through rolling bearings, the shaft levers at the two ends of each traction roller penetrate through the rack and extend out, bottom feet are arranged at the bottom of the rack, and the bottom feet at the bottom of the rack are locked on the ground through screws;

the two adjacent tractors are connected through a coupler, the coupler is installed at the connecting position of shaft rods of the two adjacent tractors, a driven gear is installed on the shaft rod of the tractor at one end, a servo motor is installed at the bottom of the shaft rod, a driving gear is installed on an output shaft of the servo motor, and the driving gear is meshed with the driven gear through a rack.

As a preferred technical scheme of the invention, the support comprises fixed supporting rods, the fixed supporting rods are vertically fixed on the bottom surface of the foundation pit and positioned at two sides of the base, the top ends of the fixed supporting rods are hinged with fourth supporting rods, the bottom ends of the fourth supporting rods are hinged with third supporting rods and first supporting rods, the other ends of the third supporting rods are hinged with second supporting rods, and the other ends of the second supporting rods are hinged with the middle parts of the fixed supporting rods;

the bottom end of the first supporting rod is hinged to the bottom end of the fixed supporting rod, a fifth supporting rod is hinged to the middle of the first supporting rod, and the top end of the fifth supporting rod is hinged to the middle of the fixed supporting rod;

the middle part of the fixed supporting rod is provided with a raised sleeve, the top end of the sleeve is provided with a cylindrical through hole, a transmission shaft is arranged in the through hole of the sleeve through a rolling bearing, a hexagonal column is arranged at the top end of the transmission shaft, the bottom end of the transmission shaft is connected with a universal shaft, the other end of the universal shaft is provided with a driving rod, the driving rod is a cylindrical rod, a fixing sleeve is arranged in the middle of the fixing support rod and above the second support rod, the axial center of the fixed sleeve is provided with a through round hole, the driving rod is arranged in the round hole of the fixed sleeve through a rolling bearing, the bottom end of the driving rod penetrates through the fixed sleeve, the outer circular surface of the driving rod penetrating through the fixed sleeve is provided with threads, the bottom end of the driving rod is connected to the top end of the nut sleeve through threaded engagement, and the bottom end of the nut sleeve is hinged to the middle of the second supporting rod.

As a preferable technical solution of the present invention, a disc-shaped base is provided at a side end of the sleeve, a plurality of pointed nails are provided at a bottom surface of the base, and tips of the pointed nails become gradually thicker toward a root.

As a preferable technical scheme of the invention, the bottom end of the fifth supporting rod is provided with a roller.

As a preferable technical solution of the present invention, the rope pile is of a vertical cylindrical structure, and the outer wall of the rope pile is provided with a raised step.

As a preferred technical solution of the present invention, a square-hole-shaped bayonet is disposed at the top end of the other side wall of the rope buckle body, a raised hook is disposed at the top end of the movable plate, the hook is of a U-shaped structure, and the hook is clamped in the square hole of the bayonet.

Compared with the prior art, the invention at least comprises the following beneficial effects:

the natural gas conveying pipeline is placed on the ground, the natural gas conveying pipeline is rolled into the foundation pit from the ground, the natural gas conveying pipeline is supported by the rope, the rope is pulled by the tractor and slowly loosened, the natural gas conveying pipeline is slowly put down in the foundation pit by the rope, and the natural gas conveying pipeline is placed in a base in the middle of the foundation pit, so that the placement safety of the natural gas conveying pipeline is improved.

Secondly, the invention is provided with the supports at the two sides of the foundation pit respectively, the supports comprise a fixed support rod and a transmission shaft, the universal shaft is driven to rotate by the rotation of the transmission shaft, the nut sleeve is driven to move downwards by the thread engagement of the driving rod and the nut sleeve, the whole support is pushed to unfold, the operation simplicity is improved, the support is supported by the fifth support rod after being unfolded by installing the roller at the bottom end of the fifth support rod, the support is firmly placed and is convenient to disassemble, the support is folded by rotating the transmission shaft, the support is conveniently pulled away from the two sides of the natural gas pipeline after the natural gas pipeline is placed in the foundation pit, the operation simplicity is improved during the disassembly,

thirdly, the natural gas pipeline is quickly placed in the foundation pit through the rope, the position of the natural gas pipeline placed in the foundation pit is subjected to secondary fine adjustment through the stretching of the supports on the two sides, the natural gas pipeline is tightly attached to the base, and the placement firmness of the natural gas pipeline is improved

The disc-shaped base is arranged at the side end of the sleeve, the plurality of sharp nails are arranged on the bottom surface of the base, the top ends of the sharp nails gradually become thicker towards the root, the whole support is stretched out, the idler wheel at the bottom end of the fifth supporting rod rolls forwards and then supports the whole support, the elevation angle of the whole support is increased through the idler wheel, the gripping force of the fixing supporting rod on the inner wall of the foundation pit is improved through the sharp nails on the bottom surface of the base, and the position accuracy of the natural gas pipeline placed on the base is improved through improving the position firmness of the fixing supporting rod.

Drawings

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a top view of the natural gas transportation pipeline engineering laying device of the present invention installed on both sides of a foundation pit;

FIG. 2 is a front view of the laying device for natural gas pipeline engineering of the present invention installed on both sides of a foundation pit;

FIG. 3 is a schematic structural view of a stent according to the present invention;

FIG. 4 is a schematic view of the structural attachment of the tractor of the present invention;

FIG. 5 is a schematic cross-sectional view of a cord lock of the present invention;

FIG. 6 is an enlarged view of a portion of the structure of FIG. 5;

FIG. 7 is a flow chart of a method for laying and establishing a natural gas pipeline project according to the invention;

in the figure: 1. rope buckle, 101, arc-shaped surface, 102, rope buckle body, 103, round hole, 104, bayonet, 105, hook, 106, rope hole, 107, base, 108, movable plate, 109, rope pile, 2, bracket, 201, hexagonal column, 202, fixed strut, 203, sleeve, 204, base, 205, transmission shaft, 206, universal shaft, 207, fixed sleeve, 208, nut sleeve, 209, first strut, 210, roller, 211, fifth strut, 212, second strut, 213, third strut, 214, fourth strut, 215, driving rod, 3, rope, 4, tractor, 401, traction roller, 402, coupling, 403, driven gear, 404, driving gear, 405, servo motor, 406, frame, 407, shaft lever, 5, base.

Detailed Description

The embodiments of the invention will be described in detail below with reference to the drawings, but the invention can be implemented in many different ways as defined and covered by the claims.

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further explained below by combining the specific drawings.

It will be understood that when an element is referred to as being "secured to" another element, it can be on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and similar expressions are used herein for illustrative purposes only and do not represent the only embodiments.