SE545688C2 - Floor saw comprising a control unit to automatically control the floor saw and to determine whether an operator is in position to perform manual control - Google Patents

Floor saw comprising a control unit to automatically control the floor saw and to determine whether an operator is in position to perform manual control

Info

Publication number
SE545688C2
SE545688C2 SE2051112A SE2051112A SE545688C2 SE 545688 C2 SE545688 C2 SE 545688C2 SE 2051112 A SE2051112 A SE 2051112A SE 2051112 A SE2051112 A SE 2051112A SE 545688 C2 SE545688 C2 SE 545688C2
Authority
SE
Sweden
Prior art keywords
floor saw
floor
saw
control
control unit
Prior art date
Application number
SE2051112A
Other languages
Swedish (sv)
Other versions
SE2051112A1 (en
Inventor
Johan Sandwall
Tobias Gustafsson
Original Assignee
Husqvarna Ab
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 Husqvarna Ab filed Critical Husqvarna Ab
Priority to SE2051112A priority Critical patent/SE545688C2/en
Priority to EP21873054.7A priority patent/EP4217166A1/en
Priority to US18/027,457 priority patent/US20230405873A1/en
Priority to EP21873055.4A priority patent/EP4217167A1/en
Priority to AU2021346650A priority patent/AU2021346650A1/en
Priority to CN202180065385.8A priority patent/CN116323127A/en
Priority to CN202180065384.3A priority patent/CN116234670A/en
Priority to PCT/SE2021/050871 priority patent/WO2022066079A1/en
Priority to US18/027,788 priority patent/US20230330894A1/en
Priority to PCT/SE2021/050872 priority patent/WO2022066080A1/en
Priority to AU2021350542A priority patent/AU2021350542A1/en
Publication of SE2051112A1 publication Critical patent/SE2051112A1/en
Priority to US18/135,805 priority patent/US20230249380A1/en
Publication of SE545688C2 publication Critical patent/SE545688C2/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28D—WORKING STONE OR STONE-LIKE MATERIALS
    • B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
    • B28D1/02—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing
    • B28D1/04—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing with circular or cylindrical saw-blades or saw-discs
    • B28D1/045—Sawing grooves in walls; sawing stones from rocks; sawing machines movable on the stones to be cut
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25J—MANIPULATORS; CHAMBERS PROVIDED WITH MANIPULATION DEVICES
    • B25J19/00—Accessories fitted to manipulators, e.g. for monitoring, for viewing; Safety devices combined with or specially adapted for use in connection with manipulators
    • B25J19/06—Safety devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28D—WORKING STONE OR STONE-LIKE MATERIALS
    • B28D7/00—Accessories specially adapted for use with machines or devices of the preceding groups
    • B28D7/005—Devices for the automatic drive or the program control of the machines
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C23/00—Auxiliary devices or arrangements for constructing, repairing, reconditioning, or taking-up road or like surfaces
    • E01C23/06—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road
    • E01C23/09—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for forming cuts, grooves, or recesses, e.g. for making joints or channels for markings, for cutting-out sections to be removed; for cleaning, treating, or filling cuts, grooves, recesses, or fissures; for trimming paving edges
    • E01C23/0906—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for forming cuts, grooves, or recesses, e.g. for making joints or channels for markings, for cutting-out sections to be removed; for cleaning, treating, or filling cuts, grooves, recesses, or fissures; for trimming paving edges for forming, opening-out, cleaning, drying or heating cuts, grooves, recesses or, excluding forming, cracks, e.g. cleaning by sand-blasting or air-jet ; for trimming paving edges
    • E01C23/0926—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for forming cuts, grooves, or recesses, e.g. for making joints or channels for markings, for cutting-out sections to be removed; for cleaning, treating, or filling cuts, grooves, recesses, or fissures; for trimming paving edges for forming, opening-out, cleaning, drying or heating cuts, grooves, recesses or, excluding forming, cracks, e.g. cleaning by sand-blasting or air-jet ; for trimming paving edges with power-driven tools, e.g. vibrated, percussive cutters
    • E01C23/0933—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for forming cuts, grooves, or recesses, e.g. for making joints or channels for markings, for cutting-out sections to be removed; for cleaning, treating, or filling cuts, grooves, recesses, or fissures; for trimming paving edges for forming, opening-out, cleaning, drying or heating cuts, grooves, recesses or, excluding forming, cracks, e.g. cleaning by sand-blasting or air-jet ; for trimming paving edges with power-driven tools, e.g. vibrated, percussive cutters rotary, e.g. circular-saw joint cutters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16P—SAFETY DEVICES IN GENERAL; SAFETY DEVICES FOR PRESSES
    • F16P3/00—Safety devices acting in conjunction with the control or operation of a machine; Control arrangements requiring the simultaneous use of two or more parts of the body
    • F16P3/12—Safety devices acting in conjunction with the control or operation of a machine; Control arrangements requiring the simultaneous use of two or more parts of the body with means, e.g. feelers, which in case of the presence of a body part of a person in or near the danger zone influence the control or operation of the machine

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Robotics (AREA)
  • Sawing (AREA)

Abstract

A floor saw (100, 100a, 100b) comprising a control unit (130) arranged to automatically control the floor saw to cut along a desired line. The control unit (130) is also arranged to determine whether an operator is in position to perform manual control of floor saw steering by having his or her hands on a control handle (190) of the floor saw, and to trigger a warning signal and/or halt the floor saw in response to determining that an operator is not in position to perform manual control of the floor saw steering.

Description

TECHNICAL FIELD The present disclosure relates to concrete processing and in particular to early entry concrete sawing. There are disclosed floor saws, systems and methods which allow for mitigating floor saw drifting due to a cutting blade mounted offset to a side of the floor saw.
BACKGROUND Early entry concrete sawing is a concrete processing technique where shallow cuts, often in straight lines, are made in concrete surfaces within the first one or two hours after finishing surface preparation, i.e., after the concrete has reached a certain level of maturity but before the concrete has set completely, a period often referred to as the 'green zone”. lt is not always easy to predict when this period is to occur. The shallow cuts create a weakened surface plane, thus encouraging cracking to occur at the location of the cuts in a controlled manner rather than the cracks appearing anywhere in the concrete, resulting in a more visually appealing surface. One example of early entry concrete saws are the Soff-Cut range of early entry concrete saw products manufactured by Husqvarna AB.
Many early entry concrete saws are arranged with a saw blade that is offset to one side of a center line of the saw, i.e., offset transversally to the cutting direction of the floor saw. This offset allows, e.g., for making cuts close to a wall or other obstacle. The offset, however, creates an imbalance in the saw which often results in the saw drifting towards the side where the saw blade is mounted. Some different ways of compensating for this ”natural” drifting in early entry concrete saws are known. For instance, different fixed gear ratios on the |left and right driven wheels can be used to bias the drive and thereby counter the drift. The entire driven axle on the floor saw can also be steered, i.e., adjusted, to compensate for the drift. These methods of compensating for the drift are seldom perfect. Thus, it is often seen in field that the operator of the early entry floor saw manually compensates for residual drift by body weight, which is not ideal since it makes the concrete processing operation more difficult and places additional strain on the operator.
WO 2018080383 A1 discloses devices and systems for determining operator awareness and for initiating precautionary measures in response to detecting that the operator is not aware or sufficiently attentive to safely operate a piece of construction machinery.
US 20040251730 A1 describes a floor saw which can be controlled to automatically advance over the floor surface at a desired speed.
WO 2009018364 A1 relates to a stump cutter with a safety system that prevents operation in case an operator is not present.
There is a need for improved floor saws which enable a more efficient and convenient early entry sawing.
SUMMARY lt is an object of the present disclosure to provide improved floor saws which alleviate at least some of the issues mentioned above. The object is at least in part obtained by a floor saw comprising a control unit t is arranged to determine whether an operator is in position to perform manual control of floor saw steering by having ' .1 hands on a control handle of the floor saw, and to trigger a warning signal and/or halt the floor saw in response to determining that an operator is not in position to perform manual control of the floor saw steering.

Claims (7)

Claims
1. A floor saw (100, 100a, 100b) comprising acontrol unit (130) arranged to automatically control the floor saw to cut along a desired line, whether an operator is in position to perform manual control of floor saw steering by having his or her hands on a control handle (190) of the floor saw, and to trigger a warning signal and/or halt the floor saw in response to determining that an operator is not in position to perform manual control of the floor saw steering.
2. The floor saw (100, 100a, 100b) according to claim 1, the floor saw comprising a circular cutting blade (1 10) arranged transversally offset (O) from a centrum line (C), which centrum line (C) is aligned with a forward direction (F) of the floor saw, the floor saw further comprising at least two supporting wheels (120, 120a, 120b) arranged to support the floor saw on the concrete surface segment (160), a sensor arrangement (140) configured to determine a current yaw motion of the floor saw, and a control unit (130) configured to obtain a desired yaw motion setting, wherein at least one of the supporting wheels (120, 120a, 120b) is arranged on an opposite side of the centrum line (C) compared to the circular cutting blade (110) and arranged to generate a respective variable wheel force, and wherein the control unit (130) is arranged to control a difference between the wheel forces of the supporting wheels to reduce a difference between the current yaw motion of the floor saw and the desired yaw motion setting.
3. The floor saw (1 00, 100a, 100b) according to claim 2, wherein the at least two supporting wheels (120, 120a, 120b) are driven wheels, and wherein the control unit (130) is arranged to control the difference between the wheel forces of the supporting wheels by controlling respective wheel torques and/or speeds of the at least two driven wheels (120, 120a, 120b).
4. The floor saw (100, 100a, 100b) according to any previous claim, comprising a first drive wheel (120a) and a second drive wheel (120b), where WCQHIIQI- unit. .(130) -is .aISQ arranged. to determirie-- ,_ V- Formatted: Font: Boldeach drive wheel is driven by a respective first and second electric machine (150a, 150b) controlled by the control unit (130).
5. The floor saw (100, 100a, 100b) according to claim 2, wherein the control unit (130) is arranged to receive the desired yaw motion setting via wireless radio link (320) from a remote control device (310).
6. The floor saw (100, 100a, 100b) according to claim 5, wherein the remote control device (310) is configured to transmit a desired yaw motion setting corresponding to sawing along a straight line, or corresponding to sawing along an arcuate curve having a configurable radius, or corresponding to a path with a deviation defined by a number of degrees from a set course after a controlled turning maneuver.
7. The floor saw (100, 100a, 100b) according to claim 5 or 6, wherein the remote control device (310) is configured to control one or more further floor saws (100) in addition to the floor saw.
SE2051112A 2020-09-24 2020-09-24 Floor saw comprising a control unit to automatically control the floor saw and to determine whether an operator is in position to perform manual control SE545688C2 (en)

Priority Applications (12)

Application Number Priority Date Filing Date Title
SE2051112A SE545688C2 (en) 2020-09-24 2020-09-24 Floor saw comprising a control unit to automatically control the floor saw and to determine whether an operator is in position to perform manual control
CN202180065385.8A CN116323127A (en) 2020-09-24 2021-09-13 Floor sawing installation with controllable support wheels
US18/027,457 US20230405873A1 (en) 2020-09-24 2021-09-13 Floor sawing equipment with controllable supporting wheels
EP21873055.4A EP4217167A1 (en) 2020-09-24 2021-09-13 Floor sawing equipment with controllable supporting wheels
AU2021346650A AU2021346650A1 (en) 2020-09-24 2021-09-13 Floor sawing equipment with controllable supporting wheels
EP21873054.7A EP4217166A1 (en) 2020-09-24 2021-09-13 Floor sawing equipment with controllable supporting wheels
CN202180065384.3A CN116234670A (en) 2020-09-24 2021-09-13 Floor sawing installation with controllable support wheels
PCT/SE2021/050871 WO2022066079A1 (en) 2020-09-24 2021-09-13 Floor sawing equipment with controllable supporting wheels
US18/027,788 US20230330894A1 (en) 2020-09-24 2021-09-13 Floor sawing equipment with controllable supporting wheels
PCT/SE2021/050872 WO2022066080A1 (en) 2020-09-24 2021-09-13 Floor sawing equipment with controllable supporting wheels
AU2021350542A AU2021350542A1 (en) 2020-09-24 2021-09-13 Floor sawing equipment with controllable supporting wheels
US18/135,805 US20230249380A1 (en) 2020-09-24 2023-04-18 Floor sawing equipment with controllable supporting wheels

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE2051112A SE545688C2 (en) 2020-09-24 2020-09-24 Floor saw comprising a control unit to automatically control the floor saw and to determine whether an operator is in position to perform manual control

Publications (2)

Publication Number Publication Date
SE2051112A1 SE2051112A1 (en) 2022-03-25
SE545688C2 true SE545688C2 (en) 2023-12-05

Family

ID=81259592

Family Applications (1)

Application Number Title Priority Date Filing Date
SE2051112A SE545688C2 (en) 2020-09-24 2020-09-24 Floor saw comprising a control unit to automatically control the floor saw and to determine whether an operator is in position to perform manual control

Country Status (1)

Country Link
SE (1) SE545688C2 (en)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4030880A1 (en) * 1990-09-29 1992-04-09 Fischer Lagertechnik Electric goods transport vehicle security system - disables vehicle control circuit when out of range of remote control transmitter carried by operator
DE19902512A1 (en) * 1999-01-22 2000-08-31 Goetting Jun Influencing vehicle by operator involves guiding vehicle on track, only enabling it to move when operator is near vehicle or in defined area on it; operator uses coded transmitter or similar
WO2003036324A1 (en) * 2001-10-23 2003-05-01 Abb Ab Industrial robot system
US20040251730A1 (en) * 2001-09-14 2004-12-16 Michael Steffen Ground surface cutting device
US20060271263A1 (en) * 2005-05-27 2006-11-30 Self Kelvin P Determination of remote control operator position
WO2009018364A1 (en) * 2007-07-31 2009-02-05 Vermeer Manufacturing Company Method and apparatus for controlling the operation of a stump cutter
US20170370898A1 (en) * 2016-06-27 2017-12-28 Quipip, Llc Sensing Device, and Systems and Methods for Obtaining Data Relating to Concrete Mixtures and Concrete Structures
WO2018080383A1 (en) * 2016-10-28 2018-05-03 Husqvarna Ab Apparatus for determining operator awareness and for initiating precautionary measures on a robotic vehicle

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4030880A1 (en) * 1990-09-29 1992-04-09 Fischer Lagertechnik Electric goods transport vehicle security system - disables vehicle control circuit when out of range of remote control transmitter carried by operator
DE19902512A1 (en) * 1999-01-22 2000-08-31 Goetting Jun Influencing vehicle by operator involves guiding vehicle on track, only enabling it to move when operator is near vehicle or in defined area on it; operator uses coded transmitter or similar
US20040251730A1 (en) * 2001-09-14 2004-12-16 Michael Steffen Ground surface cutting device
WO2003036324A1 (en) * 2001-10-23 2003-05-01 Abb Ab Industrial robot system
US20060271263A1 (en) * 2005-05-27 2006-11-30 Self Kelvin P Determination of remote control operator position
WO2009018364A1 (en) * 2007-07-31 2009-02-05 Vermeer Manufacturing Company Method and apparatus for controlling the operation of a stump cutter
US20170370898A1 (en) * 2016-06-27 2017-12-28 Quipip, Llc Sensing Device, and Systems and Methods for Obtaining Data Relating to Concrete Mixtures and Concrete Structures
WO2018080383A1 (en) * 2016-10-28 2018-05-03 Husqvarna Ab Apparatus for determining operator awareness and for initiating precautionary measures on a robotic vehicle

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Smarta lösningar för bearbetning av betongytor och golv: Product fact sheet [online], Husqvarna AB, 2019 [retrieved on 2021-04-22], s. 30-31, 36-37, Retrieved from the Internet: https://www.husqvarnacp.com/se/maskiner/betongbearbetning/?filter=Mjukbetongss%C3%A5gar *

Also Published As

Publication number Publication date
SE2051112A1 (en) 2022-03-25

Similar Documents

Publication Publication Date Title
US9051711B2 (en) Path detection-based steering command filtering method for motor grader automatic articulation feature
EP3114074B1 (en) Method and system for a lift device having independently steerable wheels
EP2542381B1 (en) Machine for the mechanical machining of plate-shaped elements, particularly tiles and slabs of ceramic material, natural stones, glass or the like
US20150202699A1 (en) Apparatus for manipulating tubular and round section objects
JP5530383B2 (en) Work vehicle
US10967903B2 (en) Electrically powered work vehicle
EP3466231B1 (en) Work vehicle
AU2006201052A1 (en) Pipe Cut and Bevel Tool
KR101740864B1 (en) Automatic Chamfering device
EP3094461B1 (en) Track drive adjustment for a ground sawing machine
US20190269068A1 (en) Power equipment
SE545688C2 (en) Floor saw comprising a control unit to automatically control the floor saw and to determine whether an operator is in position to perform manual control
US4694722A (en) Apparatus for scoring and cutting wallboard and the like
JP2015168395A (en) Work machine
EP3326845A2 (en) Power equipment provided with center pivot axle
US20160340843A1 (en) Planer and Method for Producing Rumble Strips
US20230249380A1 (en) Floor sawing equipment with controllable supporting wheels
EP4217167A1 (en) Floor sawing equipment with controllable supporting wheels
JP2006314291A (en) Riding-type seedling transplanting machine
GB2144670A (en) Numerically guided disc cutter
JP2018001807A (en) Working vehicle
JP6400922B2 (en) Mower
SE2051110A1 (en) Floor sawing equipment with controllable supporting wheels
CA2631993A1 (en) Log splitter with pressure adjustment
JP6198506B2 (en) Ride type rice transplanter