JPS6088714A - Preliminary tester for drain material - Google Patents

Abstract

PURPOSE:To exactly determine the construction condition of drain materials by providing a pitch measurer to generate pulse, a tester to output detection signals, an arithmetic unit to calculate the pitch of portions to be tested, and a data recorder. CONSTITUTION:A pitch measurer 4 to be touched by paper drain materials A to be sent out of a drain material coil 2 and a tester 3 are provided to a preliminary tester 1. In the arithmetic unit 5 of the tester 1, output signals from the measurer 4 and the tester 3 are received and arithmetically processed to calculate the pitch of portions to be tested, and the results are recorded in a data recorder 6. The pitch data of the portion 9 to be tested, which are written in the data recorder, are compared with actually measured values of pitch. Even when there are troubles with dispersion, missings, etc., in the pitch values, proper evaluation for the results of construction work can be made.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a preliminary inspection device for drain materials used in drain construction methods.

(Prior art) In the drain construction method, especially the Baver Drainage method, which is used to promote drainage and consolidation of soft ground, a phenomenon has been observed in which the drain material and the mandrel rise together due to soil pressure and water pressure when the mandrel is pulled out. There were cases where no draining effect occurred in the P9i phase.

For this purpose, a detection part is formed on the mandrel, and on the other hand, a plurality of detected parts are all detected at a predetermined position on the drain phase side, and the tray is driven into the ground to a depth of 7 by the n'J mandrel. The applicants have separately applied for a construction method in which the drain material is left in the ground by extracting the pimandrel, and the mandrel is extracted while confirming the position of the detected part by 1μ, and the drain material is buried in a predetermined position. It is disclosed in Tokuko Sho 5a-77257.

However, in the drain construction method according to the above 6 self-application, a plurality of drains are formed in the drain 44, and the pitch between the drains 44 is
It is assumed that the drain is formed in a 4-way gap, and if there are variations in the pitch of the detected part of the drain 4, or if there are any omissions, etc., the mandrel's pressure I: u H4t will cut off the detection part's excitation. There was a case where I couldn't do one song, and the drain was 4g, and the water was completely cold, and the bath was drained in January.

(Purpose of the Invention) Therefore, the present invention has been proposed to detect the drain 44 in the drain construction method as described above, and even if there is a variation in the pitch of the drain 44 or a difference in the pitch between the drain phase and the The objective is to provide a drain f+ib sparing device that can obtain an N'F value of 1avJ.

(Structure of the Invention) The present invention records the output rJ' of the pitch measuring section and the inspection section in the pitch data recorder of the sampled part to be inspected in the excavation section, and records the output rJ' of the pitch measurement section and the inspection section in the pitch section data recorder of the drain section, and when the drain section enters the mandrel. The feature is that it is configured to physically recognize the pitch of the first and second detection parts.

(Implementation?lJ) The present invention will be explained below with reference to the illustrated embodiments.

One example is shown below.

This preliminary inspection %Bj, 1 is equipped with a pitch measuring section 4 and an inspection section 6, which are in rolling contact with the paper drain A fed out from the drain material coil 2. The pitch measuring section 4 is composed of 41 rollers and rotary encoders that press against the drain paulownia A, and generates a pulse valve corresponding to the displacement length to the drain.

Hachi, 1 missing food city 6 is placed next to pitch + 1 III hikibe 4, and the warrior who was rejected by mandrel B, drain 4'J' A with the same configuration as 11 part 8) 1
'3', In response to A1 of the detected part 9, a sensor such as a detection sensitive coil type (id% sensor 2) is used,
When the temporary structure 91+ part 9 gold is detected, the detection 1it "j'k" is output.

In addition, the drain material preliminary inspection equipment
5 and a data recorder 6. Among these, Hama: 11 part 5 is iiij pitch l1llI bo part 4 and 11
Output 1 from item $6: □ manually and output: lll
Then - Chito bitch all Ω - output data recorder 6 h
Self fi, -1'ru.

In this way, 111 tt was included in the data record 6.
Pitch data of cheek part 9: Drain IA placement (
1k mandrel Bl pull 4 and <1 prefecture mandrel move 1
An example of actual measured values of the tester and mandrel lead-in 11Y created from the outputs from the 0.na'J, 11 section 7 and the calculation section 8 is shown.

(Effects of (Example 111)) Drain removal according to the present invention is as follows: 1+4H4/Mo11' (Example t) According to the present invention, the following effects can be avoided.

Pitch 4A of detected part of drain in drain construction method
, -1'j k O no pitch variation, vz ke4
Even if there are problems, you can make an appropriate review of the construction results.

[Brief explanation of drawings]

FIG. 1 is a schematic diagram showing an embodiment of the present invention, and FIG. 2 is a graph showing an example of data. 1...Drain material pre-price allowance device, 2...
・Drain shrine coil, 3... Inspection section, 4...
... Pitch measuring section, 5... Performance section, 6...
... Data recorder, 7 ... Mandrel movement detection section, 8 ... Detection section, 9 ... Detected section, A ... Drain removal, B... Mandrel.

Claims (1)

[Claims] A detection part is formed on a mandrel, a detected part is formed on a drain material, the drain material is driven into the ground to a required depth by the mandrel, and the mandrel is pulled out to leave the drain material in the ground. In addition, in the drain construction method in which the position of the detected part is confirmed by the detection part, pitch measurement is performed in which the front 6C mandrel contacts the drain material supplied to the mandrel during drain driving and generates a pulse corresponding to the displacement length of the drain material. a detection part d1- which detects all detected parts provided at required positions of the drain material and outputs a detection signal, and a detection part which manually outputs the output signals from the pitch measuring part and the feeding part. A drain material preliminary inspection device characterized by being equipped with a pitch tray for elevating pitches, and a data recorder for recording detailed pitch trays to be inspected lifted at the Ensho residence.