CN-116964278-B - Pipeline construction line and gradient setting device

Abstract

The present invention is embodied in a construction quality control tool that enables owners and contractors to meet design floor plans and specifications. The construction quality control tool can easily measure grade without the need for an on-site surveyor, and quickly transmit print data in real time for third party inspectors to prepare finished plan views, thereby saving time and cost for both parties' budgets. Most importantly, the construction quality control tool ensures safe and accurate installation of the pipe to prevent future construction problems. The preferred embodiment of the present invention includes two devices, (1) a tube placement device and (2) a remote processing and recording unit. The tube setting device is installed in a new tube to be installed. The tube placement device helps the tube installer to reliably and accurately install tubes that match lines and gradients (fixed x, y, z) according to the design plan. The remote processing and recording unit enables construction supervision and third party inspectors to monitor tube installation in real time.

Inventors

• XIAO SHIYING
• Xiao Jiahuan

Assignees

• 萧时英
• 萧嘉桓

Dates

Publication Date

20260512

Application Date

20211217

Priority Date

20201221

Claims (7)

1. 1. A pipe setting apparatus for underground pipe construction, comprising: A center housing including a curved face for abutting an inner face of a tube; a pair of mounting brackets connected to the center housing, each mounting bracket including a rotatable bearing; a hollow tube for accommodating electronic components, the hollow tube being suspended between the pair of mounting brackets by a pair of shafts connecting the hollow tube to the rotatable bearings, wherein the rotatable bearings allow the hollow tube to rotate along a longitudinal axis, and A counterweight connected to the hollow tube to center the tube in a vertical orientation; The hollow tube includes an electronic component selected from the group consisting of a 2-axis inclinometer, a digital magnetic compass, a single board computer, an SD memory card, a WIFI transmitter, and a battery.
2. 2. The tube setting device of claim 1, further comprising a mobile device for remote data communication with one or more of the electronic components.
3. 3. The tube setting device of claim 1, further comprising a second chamber mounted to the hollow tube, the second chamber including the counterweight.
4. 4. The tube setting device of claim 1, further comprising a first torsion spring connected to the center housing to bias the curved face against the inner face.
5. 5. The tube setting device of claim 4, further comprising a bottom leg connected to one end of the first torsion spring.
6. 6. The tube setting device of claim 4, further comprising a second torsion spring, an adjustable bracket, and a bottom leg, the first torsion spring being connected to the adjustable bracket, and the second torsion spring being connected between the adjustable bracket and the bottom leg.
7. 7. The tube setting device of claim 4, further comprising a left arm, a second torsion spring, and a right arm, the left arm connected to the first torsion spring, and the second torsion spring connected between the center housing and the right arm.

Description

Pipeline construction line and gradient setting device Technical Field The present invention relates to setting the line and slope of underground pipes. More particularly, the present invention relates to an improved system and apparatus for setting lines and slopes for underground pipes that match a design plan. Background Construction projects typically involve four parties, owners, contractors, engineers and third party independent inspectors. The construction of underground pipelines must conform to design plans and specifications prepared by engineers. Typically, once the ground is cleaned, the contractor dispatches his surveyor to place a field setting out of the ground according to the design plan. The contractor's surveyor places the pile of the offset pipe on the ground as indicated in the plan view of the design ("offset pile") and then the contractor can align the correct excavation site along the designated pipe. Typical measurements of gravity pipe installations require high accuracy. For example, every 25 feet along the tangent line and every 10 feet along the curve, the flowline station lofts at + -0.2 feet, aligns at + -0.1 feet, and is at + -0.01 feet in height. Open trench construction is a common practice for pipe installation, particularly in open, undeveloped areas. Construction in developed and/or developing areas requires minimal construction effort. The grooves dug to accommodate the pipe are typically the width of the pipe outside diameter plus one foot per side of the pipe. Thus, deep and narrow trenches are most desirable. This type of construction makes accurate pipe installation more difficult and time consuming, as contractors must use trench boxes and/or other support equipment to secure the safe construction of deep, narrow trenches (fig. 1, 101). Pipes made of concrete and metal (except special corrosion resistant stainless steel alloys) that transport wastewater are susceptible to corrosion by hydrogen sulfide gas generated by septic tank biowaste carried in the wastewater. PVC and HDPE are therefore preferred materials for the pipe because they are able to withstand the corrosion of hydrogen sulfide gas. Likewise, PVC-lined concrete pipes, epoxy-coated steel pipe liners and clay pipes are also used to transport waste water. PVC and HDPE are flexible tubing that can deform if improperly installed. However, low cost PVC tubing is most widely used in sewer line installations. To build and install a pipe, a contractor's surveyor first places the ground at an offset of the pipe, as shown in the design plan, so that the contractor uses a backhoe to excavate along a specified pipe alignment and simultaneously move the trench box (102). The channel box has several dimensions, limited by the weight and the specific depth of the channel. For a trench to be 30 feet deep, three trench boxes must be vertically stacked (103). Digging, lowering and stacking trench boxes is a concurrent operation. After the trench is dug to the depth set by the offset pile, the tube is installed at the design height and a layer of bedding material is placed and compacted to the tube spring wire height (about half the tube diameter). In this process, contractor's and third party testers should measure each of the laid pipe insoles immediately after laying a layer of bedding material and compact it to the pipe spring line height before the compacted soil layer fills the trench and covers the pipe. If the line and grade are not checked immediately after each new pipe (20 feet long) is installed, misplaced pipes may result in up-down and jagged finished lines due to the nature of the flexible pipe such as PVC. Due to (1) the deflection of the PVC pipe at the joint (fig. 2, 201) and (2) the flexible longitudinal deflection of the PVC pipe (fig. 2, 202), even the most experienced installer may install pipes that deviate from the design plan. For example, the pipe joint is flexible, bending at most 5 ° deflection. When two tubes are joined, the flexibility can result in a gradient deviation of up to 8% in the 360 ° direction. In a new 20 foot long pipe installation, a 1% grade deviation may result in a height deviation of up to 2.4 inches. Performing verification measurements on each pipe installed has a significant impact on construction costs and progress. The construction costs increase mainly because of delays caused by the need for on-site measurement personnel to measure the insole of each tube, and the need for tube installers of contractors to pause work to allow the measurement personnel to make the measurements. Not only does this slow down the installation rate, but it also requires that the contractor's investigators remain in the field. Most contractors cannot pay the cost of the backup investigator with the project budget. Thus, contractors are at risk and rely on the pipe installer to pay more effort in laying the pipe according to the offset piles with/without the laser pointer. This is typically