EP4282608A1 - Scie sur pied et procédé d'optimisation du fonctionnement d'une scie sur pied - Google Patents

Scie sur pied et procédé d'optimisation du fonctionnement d'une scie sur pied Download PDF

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Publication number
EP4282608A1
EP4282608A1 EP22175283.5A EP22175283A EP4282608A1 EP 4282608 A1 EP4282608 A1 EP 4282608A1 EP 22175283 A EP22175283 A EP 22175283A EP 4282608 A1 EP4282608 A1 EP 4282608A1
Authority
EP
European Patent Office
Prior art keywords
saw
floor
floor saw
undesirable behavior
user
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.)
Pending
Application number
EP22175283.5A
Other languages
German (de)
English (en)
Inventor
Hans-Joerg Rieger
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.)
Hilti AG
Original Assignee
Hilti AG
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 Hilti AG filed Critical Hilti AG
Priority to EP22175283.5A priority Critical patent/EP4282608A1/fr
Publication of EP4282608A1 publication Critical patent/EP4282608A1/fr
Pending legal-status Critical Current

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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
    • 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

Definitions

  • the present invention relates to a floor saw with at least a first movement means and a second movement means, wherein the floor saw can be connected to a saw blade for processing a subsurface.
  • the floor saw is designed to detect undesirable behavior of components of the floor saw, such as the movement means slipping or the saw blade leaving a kerf, and to either automatically counteract this undesirable behavior or to provide a user of the floor saw with information on how to do so to counteract undesirable behavior.
  • the invention relates to a method for the optimized operation of such a floor saw, with which a user of the floor saw can be supported when working with the floor saw.
  • Floor saws are known in the prior art and can be used to cut concrete or asphalt surfaces. Most floor saws have two powered wheels that can be used to move the floor saw over the ground.
  • the disadvantage of the known floor saw is that it can be a challenge for the user to enable operation of the floor saw that is optimized in terms of cutting performance.
  • the speed of the wheels and the cutting depth at which the saw blade of the floor saw penetrates into the surface to be worked can be varied in order to maximize the cutting performance of the floor saw.
  • a continuous adjustment of these operating parameters may be necessary, so that the user of the floor saw can be subjected to great strain when working with the floor saw.
  • the object on which the present invention is based is to overcome the shortcomings and disadvantages of the prior art described above and to provide an easy-to-use floor saw with which the user can be supported in operating the floor saw in order to achieve optimal utilization the performance of the floor saw and the achievement of maximum cutting performance.
  • a floor saw is provided with at least a first movement means and a second movement means, the floor saw being connectable to a saw blade for processing a subsurface.
  • the floor saw is designed to detect undesirable behavior of components of the floor saw, such as the movement means slipping or the saw blade leaving a kerf, and to either automatically counteract this undesirable behavior or to provide a user of the floor saw with information on how to do so to counteract undesirable behavior.
  • a feed speed of the floor saw is maximized for a given depth of a cut that is to be made in a subsurface to be processed.
  • the maximization of the feed speed of the floor saw is achieved in particular without the moving means slipping or the saw blade leaving the kerf.
  • the feed speed of the floor saw can be optimized with the invention without the moving means of the floor saw slipping and without the saw blade being lifted out of the kerf.
  • This behavior of the moving means and/or the saw blade of the floor saw is referred to in the sense of the invention as “undesirable behavior of components of the floor saw”, with the moving means and the saw blade in particular representing the “components of the floor saw”.
  • the term “components of the floor saw” can of course also mean other components of the floor saw.
  • a floor saw is operated with increasing feed speed, it may happen that the friction or traction between the moving means of the floor saw and the surface to be worked is not sufficient to prevent one or more moving means of the floor saw from slipping. Slipping of the moving means can disadvantageously result in no feed being generated at all or the feed decreasing significantly. As a result, the floor saw no longer moves at all or moves much more slowly in one working direction, so that the feed speed of the floor saw decreases undesirably. If a low feed speed or cutting depth is selected, the drive means spinning or the saw blade being lifted out can be prevented. However, in this case the available power of the sawing system is not fully utilized.
  • this pushing out of the saw blade of the floor saw from the kerf is also preferably referred to as “leaving a kerf by the saw blade”.
  • the cutting depth is changed, which in turn can have a negative impact on the cutting performance of the floor saw.
  • an optimal balance can advantageously be found between the speed of the moving means on the one hand and the cutting depth on the other side, whereby the cutting performance of the floor saw can be maximized if the floor saw is operated with a combination of the operating parameters "speed” that is considered optimal Means of movement” and “cutting depth” are operated.
  • this balance is dynamic, i.e. changes over time.
  • the optimal combination of the operating parameters “speed of the moving means” and “cutting depth” preferably changes over time or this combination represents a function of time t. It is precisely in this dynamic environment that the invention can make a significant contribution to improving the cutting performance of the floor saw to maximize.
  • the invention can advantageously provide a method for optimized operation of a floor saw or a method for supporting a user in operating a floor saw.
  • the invention can provide a floor saw that supports the user in finding or maintaining an optimal combination of operating parameters for the operation of the floor saw in order to optimally utilize the available power of the floor saw.
  • the cutting depth can be increased if the maximum feed speed is not sufficient to fully utilize the performance of a drive mechanism of the floor saw.
  • the drive mechanism can preferably also be referred to as the “main drive of the floor saw”.
  • a set cutting depth of the floor saw is reduced if a performance limit of the drive mechanism or the traction limit of the floor saw is already reached at a low feed speed of the floor saw.
  • the floor saw comprises at least one sensor for detecting an operating state of the first and/or second movement means.
  • operating status of a moving device can be used, for example, to determine whether the moving device moves and/or rotates properly.
  • operating state of a means of movement can also be used, for example, to mean that a means of movement slips.
  • the “slipping of a moving device” can preferably also be referred to as “spinning a moving device”.
  • a proper (rotational) movement of a moving means can be referred to as the first operating state of a moving means, while slipping of a moving means is referred to as the second operating state of the moving means.
  • the slipping of a moving device represents a possibility for undesirable behavior of a component, here the at least one moving device, of the floor saw.
  • the at least one sensor is preferably set up to detect whether at least one movement means of the floor saw is slipping. If slipping of at least one moving device of the floor saw is detected, the floor saw can be set up to inform the user of measures that he can take to counteract the slipping of the at least one moving device.
  • the floor saw or a remote control of the floor saw has a display device on which lettering, symbols and/or icons can be displayed in order to support the user in operating the floor saw.
  • the user can be suggested on the display device to reverse, i.e. reduce, a feed of the floor saw.
  • the user can be recommended to reduce the cutting depth with which the saw blade penetrates the surface to be processed.
  • the measures mentioned are suitable for counteracting the undesirable behavior of floor saw components, eliminating it or reducing its effects.
  • the data recorded by the sensors is displayed to the user on the display device, so that the user himself, knowing this data, can take suitable measures to stop the undesirable behavior of individual components of the floor saw.
  • the data displayed on the display device can be raw data or data processed by information technology.
  • the floor saw can be controlled with a remote control.
  • the floor saw can be set up to inform the user of measures that he can take to counteract the slipping of the at least one moving device.
  • a color marking can also be provided on the display device, which shows the user whether the floor saw is being operated in an optimal range (green), in the area of overload (red) or in the area of underload (orange).
  • the floor saw can include a control device that is set up to evaluate incoming sensor data and issue control commands depending on the results of the evaluation of the sensor data.
  • the control device can comprise a processor.
  • the data recorded with the at least one sensor can be forwarded to the control device, whereby the control device is able to calculate the required settings and forward the corresponding data and / or commands to the setting units of the floor saw.
  • the necessary settings can, for example, be made with the aim of counteracting the undesirable behavior of at least one component of the floor saw or - if possible - eliminating it.
  • the means of movement are formed by wheels and/or chains.
  • the floor saw comprises two movement means. These two means of movement can be arranged, for example, along an axis. A symmetrical or essentially symmetrical arrangement of the movement means is particularly preferred. Such a symmetrical or substantially symmetrical arrangement of the moving means can be achieved, for example, in that the first moving means is arranged on a right side of the floor saw and the second moving means is arranged on a left side of the floor saw. In the sense of the invention, it can also be preferred that there is a movement means arranged in a front area and in a rear area of the floor saw.
  • the floor saw comprises a drive mechanism for driving the first and/or second moving means.
  • the floor saw comprises two movement means that can be driven by the drive mechanism.
  • the floor saw comprises more than two moving means, whereby one moving means, two moving means or more than two moving means can be driven by the drive mechanism.
  • the driven movement means are controlled essentially uniformly or not uniformly with regard to the feed speed.
  • one movement means can be driven with the drive mechanism of the floor saw or two or more movement means can be driven.
  • the specification of the control device to the driven moving means can be essentially the same or similar in order to move the floor saw smoothly “forward” in a working or moving direction.
  • the floor saw can advantageously travel essentially straight ahead.
  • the essentially symmetrical drive of the moving means of the floor saw advantageously leads to good straight running of the floor saw.
  • the two driven movement means are not driven uniformly.
  • the moving means are arranged on the right and left sides of the floor saw and if the moving means are not driven uniformly, the floor saw can curve.
  • the floor saw comprises at least one sensor for detecting a position of the saw blade in relation to a surface to be processed.
  • the sensor can also be used to detect a position of the saw blade in relation to a kerf.
  • the at least one sensor for detecting a position of the saw blade can preferably be designed as a tilt sensor or distance sensor, with which, for example, an inclination of the saw blade in the kerf of the surface to be processed can be detected.
  • the at least one sensor for detecting a position of the saw blade is preferably set up to detect whether the saw blade is “straight” or “inclined” in the kerf.
  • the at least one sensor for detecting a position of the saw blade can in particular detect whether the saw blade is lifted out of the kerf during cutting or not, the lifting of the saw blade from the kerf preferably corresponds to an “undesirable behavior of a component of the floor saw” in the sense of the invention.
  • the user can be suggested on a display device to reduce the advance of the floor saw in order to stop lifting the saw blade out of the kerf.
  • the user can be recommended to reduce the cutting depth with which the saw blade penetrates the surface to be worked. Tests have shown that the measures mentioned are suitable for counteracting or eliminating the undesirable behavior in the form of the saw blade being lifted out of the kerf.
  • the at least one sensor is arranged in the area of the movement means of the floor saw.
  • the floor saw comprises, for example, at least two moving means that are arranged on a driven axle
  • the at least one sensor can be present, for example, in the area of a non-driven moving device, for example in the area of a non-driven wheel of the floor saw.
  • the at least one sensor is arranged in the area of the drive train of the driven movement means of the floor saw.
  • the sensor system of the floor saw can preferably be set up to determine a speed difference and to take measures based on this detected speed difference if the speed difference is in a range that corresponds to undesirable behavior of the floor saw or its components.
  • measures can, for example, involve showing the user a message to reduce the cutting depth and/or the feed speed.
  • a measure to eliminate undesirable behavior of the floor saw or its components can also consist of the floor saw automatically, i.e. automatically, reducing its cutting depth and/or its feed speed.
  • the movement means each have their own drive motor, in which the speed can be adjusted independently of one another, it may be preferred in the sense of the invention that the at least one sensor is arranged in one or both driven movement means. In this case too, a speed difference can be determined, whereby the speed of the faster moving means can, for example, be reduced until both moving means rotate essentially at the same speed. This reduction in the speed of the faster moving means can also eliminate undesirable behavior of the floor saw or its components.
  • the lifting of the saw blade out of the kerf is automatically ended by making the appropriate settings by the floor saw itself.
  • the data that is recorded with the at least one sensor for detecting a position of the saw blade can be forwarded to the control device of the floor saw and evaluated there.
  • the appropriate settings can be made, for example by sending the required data and/or control commands to the setting units of the floor saw.
  • the floor saw comprises a device for changing the center of gravity of the floor saw.
  • this device for changing the center of gravity of the floor saw for example, pressure on the saw blade and/or on the moving means of the floor saw can be increased in order to generate higher traction and/or friction.
  • the higher traction or friction can advantageously prevent the movement means of the floor saw from slipping.
  • the detection of the undesirable behavior takes place with a sensor for detecting an operating state of the first and/or second movement means and/or with a sensor for detecting a position of the saw blade in relation to a surface to be processed.
  • the undesirable behavior can be eliminated automatically using a control device on the floor saw.
  • the display of information to support a user in eliminating undesirable behavior using a display device he follows.
  • the method for optimized operation of a floor saw advantageously serves to support the user in operating the floor saw or when working with it.
  • the floor saw is able to carry out measures to maximize a feed rate of the saw.
  • the invention can be used to increase the cutting performance of the floor saw. This is preferably achieved by increasing the cutting speed at the same cutting depth, so that the cut area also increases per unit of time.
  • the invention can prevent the cutting depth from being unintentionally reduced. Such an unintentional reduction in cutting depth can occur if the saw blade is pushed out of the kerf and the user does not notice this. A reduced cutting depth can be disruptive when removing the cut part of the subsoil. The user often only notices when removing the cut part of the subsurface that he has not yet cut through it.
  • data from at least one sensor of the floor saw is evaluated, whereby the sensor can, for example, be able to detect and/or be able to detect slipping of the wheels of the floor saw that the saw blade or saw is lifted out of the cut.
  • the speed of a non-driven moving means can be compared with the speed of a driven moving means.
  • the at least one sensor for detecting slipping of a moving means of the floor saw can be designed, for example, as a Hall sensor.
  • a reduction in the cutting depth can be used to prevent the moving means from slipping.
  • the feed force required to reach a predefined speed can be increased. This in turn means less traction may be required.
  • Another way to prevent the moving means from slipping is preferably to reduce the feed speed and leave the cutting depth the same.
  • the floor saw is set up to recognize that the available drive and feed power of the floor saw is not fully utilized. This can then be displayed to the user of the floor saw on a display device. In the sense of the invention, it can also be preferred that the floor saw is designed to independently optimize its operation by taking measures that make the floor saw's not fully exploited performance potential usable.
  • Figure 1 shows a preferred embodiment of the proposed method for optimized operation of a floor saw.
  • the method includes a method step a), in which undesirable behavior of components of the floor saw is detected.
  • the undesirable behavior can be, for example, the moving means slipping or the saw blade leaving a kerf.
  • the means of movement can be formed, for example, by wheels or the like.
  • the floor saw is advantageously designed to independently optimize its operation by taking measures to eliminate the undesirable behavior of the floor saw or its components. This can be done, for example, by method step b), with which the undesirable behavior is automatically eliminated.
  • information to support the user of the floor saw can be displayed in a method step c).
  • the floor saw preferably includes a display device that is easily visible to the user, especially during operation of the floor saw.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Sawing (AREA)
EP22175283.5A 2022-05-25 2022-05-25 Scie sur pied et procédé d'optimisation du fonctionnement d'une scie sur pied Pending EP4282608A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP22175283.5A EP4282608A1 (fr) 2022-05-25 2022-05-25 Scie sur pied et procédé d'optimisation du fonctionnement d'une scie sur pied

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP22175283.5A EP4282608A1 (fr) 2022-05-25 2022-05-25 Scie sur pied et procédé d'optimisation du fonctionnement d'une scie sur pied

Publications (1)

Publication Number Publication Date
EP4282608A1 true EP4282608A1 (fr) 2023-11-29

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ID=82214446

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22175283.5A Pending EP4282608A1 (fr) 2022-05-25 2022-05-25 Scie sur pied et procédé d'optimisation du fonctionnement d'une scie sur pied

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EP (1) EP4282608A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1693173A1 (fr) * 2005-02-22 2006-08-23 HILTI Aktiengesellschaft Machine à scier des parois commandable et procédé de commande
US8931853B1 (en) * 2013-03-11 2015-01-13 Edgar Josiah Taylor, Jr. Apparatus for cutting concrete curbs or other fixed structures
US20170282406A1 (en) * 2014-09-08 2017-10-05 Hilti Aktiengesellschaft Method for Controlling a Wall Saw System During the Creation of a Separation Cut

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1693173A1 (fr) * 2005-02-22 2006-08-23 HILTI Aktiengesellschaft Machine à scier des parois commandable et procédé de commande
US8931853B1 (en) * 2013-03-11 2015-01-13 Edgar Josiah Taylor, Jr. Apparatus for cutting concrete curbs or other fixed structures
US20170282406A1 (en) * 2014-09-08 2017-10-05 Hilti Aktiengesellschaft Method for Controlling a Wall Saw System During the Creation of a Separation Cut

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