FR2255429A1 - Adjustable inclination road leveller - has blade level correction rams controlled by liquid level detector - Google Patents

Adjustable inclination road leveller - has blade level correction rams controlled by liquid level detector

Info

Publication number
FR2255429A1
FR2255429A1 FR7345996A FR7345996A FR2255429A1 FR 2255429 A1 FR2255429 A1 FR 2255429A1 FR 7345996 A FR7345996 A FR 7345996A FR 7345996 A FR7345996 A FR 7345996A FR 2255429 A1 FR2255429 A1 FR 2255429A1
Authority
FR
France
Prior art keywords
liquid level
blade
level correction
adjustable inclination
inclination road
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
FR7345996A
Other languages
French (fr)
Other versions
FR2255429B1 (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
STIME
Original Assignee
STIME
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by STIME filed Critical STIME
Priority to FR7345996A priority Critical patent/FR2255429A1/en
Publication of FR2255429A1 publication Critical patent/FR2255429A1/en
Application granted granted Critical
Publication of FR2255429B1 publication Critical patent/FR2255429B1/fr
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C9/00—Measuring inclination, e.g. by clinometers, by levels
    • G01C9/18—Measuring inclination, e.g. by clinometers, by levels by using liquids
    • G01C9/20—Measuring inclination, e.g. by clinometers, by levels by using liquids the indication being based on the inclination of the surface of a liquid relative to its container
    • G01C9/22—Measuring inclination, e.g. by clinometers, by levels by using liquids the indication being based on the inclination of the surface of a liquid relative to its container with interconnected containers in fixed relation to each other
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/76—Graders, bulldozers, or the like with scraper plates or ploughshare-like elements; Levelling scarifying devices
    • E02F3/80—Component parts
    • E02F3/84—Drives or control devices therefor, e.g. hydraulic drive systems
    • E02F3/844—Drives or control devices therefor, e.g. hydraulic drive systems for positioning the blade, e.g. hydraulically
    • E02F3/845—Drives or control devices therefor, e.g. hydraulic drive systems for positioning the blade, e.g. hydraulically using mechanical sensors to determine the blade position, e.g. inclinometers, gyroscopes, pendulums

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Earth Drilling (AREA)
  • Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
  • Operation Control Of Excavators (AREA)

Abstract

The machine has a concave blade (10) and a transverse 'U' tube (20) to detect deviation from the desired inclination w.r.t. the horizontal, detection in changes in liquid level being effected by photo-electric cells (28) and a lamp and level correction by electrically actuated hydraulic jacks. The blade (10) is suspended from the chassis (16) by hydraulic jacks (13, 14) and attached to the tube support beam (18) via pin (24) and inclination adjustment screw (26). Rise and fall of the liquid level blocks off the upper cell (28s) or exposes the lower cell (28i) to produce level correction signals for the jack (13).
FR7345996A 1973-12-21 1973-12-21 Adjustable inclination road leveller - has blade level correction rams controlled by liquid level detector Granted FR2255429A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7345996A FR2255429A1 (en) 1973-12-21 1973-12-21 Adjustable inclination road leveller - has blade level correction rams controlled by liquid level detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7345996A FR2255429A1 (en) 1973-12-21 1973-12-21 Adjustable inclination road leveller - has blade level correction rams controlled by liquid level detector

Publications (2)

Publication Number Publication Date
FR2255429A1 true FR2255429A1 (en) 1975-07-18
FR2255429B1 FR2255429B1 (en) 1978-06-02

Family

ID=9129607

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7345996A Granted FR2255429A1 (en) 1973-12-21 1973-12-21 Adjustable inclination road leveller - has blade level correction rams controlled by liquid level detector

Country Status (1)

Country Link
FR (1) FR2255429A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2535147A1 (en) * 1982-10-29 1984-05-04 Kubota Ltd TRACTOR EQUIPPED WITH SOIL SCRAPING TOOL
CH680019A5 (en) * 1990-03-27 1992-05-29 Ammann Lasertechnik

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2535147A1 (en) * 1982-10-29 1984-05-04 Kubota Ltd TRACTOR EQUIPPED WITH SOIL SCRAPING TOOL
CH680019A5 (en) * 1990-03-27 1992-05-29 Ammann Lasertechnik

Also Published As

Publication number Publication date
FR2255429B1 (en) 1978-06-02

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Legal Events

Date Code Title Description
ST Notification of lapse