NL2008684C2 - Demolition head and method of operating thereof. - Google Patents

Demolition head and method of operating thereof. Download PDF

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Publication number
NL2008684C2
NL2008684C2 NL2008684A NL2008684A NL2008684C2 NL 2008684 C2 NL2008684 C2 NL 2008684C2 NL 2008684 A NL2008684 A NL 2008684A NL 2008684 A NL2008684 A NL 2008684A NL 2008684 C2 NL2008684 C2 NL 2008684C2
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NL
Netherlands
Prior art keywords
demolition
demolition head
transducer
load
tool
Prior art date
Application number
NL2008684A
Other languages
Dutch (nl)
Inventor
Rudolf Schreijer
Arnaund Guillaume Marie Witlox
Original Assignee
Rusch B V
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 Rusch B V filed Critical Rusch B V
Priority to NL2008684A priority Critical patent/NL2008684C2/en
Application granted granted Critical
Publication of NL2008684C2 publication Critical patent/NL2008684C2/en

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G23/00—Working measures on existing buildings
    • E04G23/08—Wrecking of buildings
    • E04G23/082—Wrecking of buildings using shears, breakers, jaws and the like
    • 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
    • E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
    • E02F3/30—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets with a dipper-arm pivoted on a cantilever beam, i.e. boom
    • E02F3/301—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets with a dipper-arm pivoted on a cantilever beam, i.e. boom with more than two arms (boom included), e.g. two-part boom with additional dipper-arm
    • 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
    • E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
    • E02F3/30—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets with a dipper-arm pivoted on a cantilever beam, i.e. boom
    • E02F3/302—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets with a dipper-arm pivoted on a cantilever beam, i.e. boom with an additional link
    • 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
    • E02F3/96—Dredgers; Soil-shifting machines mechanically-driven with arrangements for alternate or simultaneous use of different digging elements
    • E02F3/965—Dredgers; Soil-shifting machines mechanically-driven with arrangements for alternate or simultaneous use of different digging elements of metal-cutting or concrete-crushing implements
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/26—Indicating devices
    • E02F9/264—Sensors and their calibration for indicating the position of the work tool
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
    • G01L5/0061—Force sensors associated with industrial machines or actuators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D17/00—Shearing machines or shearing devices cutting by blades pivoted on a single axis

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Architecture (AREA)
  • Chemical & Material Sciences (AREA)
  • Electrochemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Analytical Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Working Measures On Existing Buildindgs (AREA)

Description

DEMOLITION HEAD AND METHOD OF OPERATION THEREOF
This invention relates to a demolition head and method of operation thereof.
5 Demolition machines are often used in the deconstruction of large structures, such as buildings, because they are capable of reaching parts of a structure that are otherwise difficult or dangerous to access.
Typically, a machine is provided with a demolition head which is mounted at the 10 end of a boom of the machine. The demolition head comprises a demolition tool for performing a demolition operation. The demolition tool may be a cutting tool for cutting struts, pipes, beams or floors of the structure during the demolition operation.
15 In use, the demolition tool is continually manoeuvred to demolish different parts of a structure. For example, the demolition tool may be used to cut beams having different widths and which extend in different directions. Consequently, the loads exerted on the tool during use vary in both magnitude and direction. Furthermore, such loads are often unpredictable. An operator must therefore 20 remain vigilant when operating the demolition tool to ensure that unsafe loading which may damage the demolition head or the machine, or which may cause the machine itself to become unbalanced, is avoided. This is both difficult and susceptible to operator error. In addition, even when an operator is vigilant, loads acting on machines having a long boom or a heavy tool can be excessive. 25
Avoidance of damage of the boom and/or demolition head in existing machines is addressed by constructing a holding mechanism around the demolition head. The holding mechanism comprises springs or hydraulic mechanisms which absorb loads acting on the demolition head. Flowever, when the loads are 30 excessive the springs and/or hydraulic mechanisms reach their extreme positions and so are no longer able to absorb the loads. Furthermore, the holding mechanism adds weight to the demolition head which is undesirable.
2
Loading of the demolition head can generate excessive stress in the boom which is undesirable. Especially transverse loads operated on the boom can cause damage to the boom.
5
According to the present invention there is provided a demolition head comprising: a tool for performing a demolition operation and a transducer which is arranged to detect a parameter relating to load acting on the demolition head.
10 The transducer may comprise first and second sensor elements which are spaced apart from each other, and may be spaced apart from each other in the demolition head.
The demolition head may further comprise a mount for supporting the tool, 15 wherein the transducer is arranged to detect a load exerted by the tool on the mount. The tool may be connected to the mount at a hinge, the transducer being spaced from the axis of the hinge. The first and second sensor elements may be spaced apart from each other in a direction which is parallel to the axis of the hinge.
20
The demolition head may also comprise two or more transducers, preferably two transducers, wherein each transducer may comprise one or more sensors. Preferably the demolition head comprises two transducers, each provided with one sensor. The demolition head may further comprise a mount for supporting 25 the tool, wherein the two or more transducers are arranged to detect a load exerted by the tool on the mount. The tool may be connected to the mount at a hinge, the transducers being spaced from the axis of the hinge. When two transducers are present the sensor element of a first transducer may be spaced apart from the sensor element of the second transducer in a direction which is 30 parallel to the axis of the hinge.
The first and/or second sensor element may comprise a pin, the tool and the mount being connected to each other by the pin.
3
The transducer may comprise a strain gauge which is arranged to detect shear forces acting on the pin.
5 The pin may comprise a cavity, the strain gauge being disposed within the cavity.
The tool may be a cutting tool having two jaws operating in a cutting plane, wherein the transducer is arranged to sense load acting on the tool in the 10 cutting plane. The cutting plane is defined as the plane in which the two jaws move between an open and closed position. The first and second sensor elements of a transducer may be disposed on opposite sides of the cutting plane. Alternatively the sensor of a first and the sensor of a second transducer may be disposed on opposite sides of the cutting plane.
15
The demolition head may further comprise a connector element which is connectable to a boom of a machine, wherein the tool is rotatable with respect to the connector element.
20 The transducer may be connected to a transmitter for transmitting a signal representative of the load. The transmitter may be housed by the demolition head.
According to a second aspect of the invention, there is provided a machine 25 comprising a machine body, a boom extending away from the machine body and a demolition head in accordance with any one of the preceding claims, wherein the demolition head is attached to the free end of the boom.
The machine body or boom may comprise a receiver for receiving a signal 30 representative of the load. The machine may further comprise a load determining unit, the load determining unit being arranged to determine load acting on the demolition head. The load determining unit may be in 4 communication with a display for displaying information relating to the load acting on the demolition head.
According to a third aspect of the invention there is provided a kit of parts 5 comprising a machine body, a boom and a demolition head in accordance with the first aspect of the invention.
According to a fourth aspect of the invention there is provided a method of operating a machine having a demolition head which comprises a tool for 10 performing a demolition operation and a transducer which is arranged to detect a parameter relating to load acting on the demolition head, the method comprising: detecting a parameter relating to load acting on the demolition head using the transducer; generating a load signal representative of the parameter; determining whether the load signal exceeds a predetermined value; and 15 generating an alert if the signal exceeds the predetermined value. The predetermined value will suitably relate to the maximum acceptable transverse force on the boom. This predetermined value will typically be well below the maximum acceptable force on the boom in a parallel direction. Thus by using this predetermined value for every rotational position of the demolition head 20 relative to the boom a safe operation is achieved.
In an alternative embodiment the parameter may relate to a load acting on the demolition head in a predetermined rotational position relative to the boom. The predetermined rotational position will then preferably be lowest when the 25 demolition head is in a transverse rotational position relative to the boom and highest when the demolition head and its cutting plane is parallel to the boom. With parallel is here meant that the cutting plane and the plane in which the boom moves are substantially the same.
30 The transducer may comprise first and second sensor elements which are spaced apart from each other, the step of generating the load signal comprises the step of combining an output from the first sensor element and an output from the second sensor element into a load signal.
5
Alternatively a sensor of a first transducer and a sensor of a second transducer are spaced apart from each other, the step of generating the load signal comprises the step of generating a first load signal by the first transducer and 5 generating a second load signal by the second transducer and combining said load signals to a combined load signal. Generating the separate load signals and combining the two load signals may be performed at a different position, wherein the two load signals are suitably transmitted by means of two wireless signals.
10
Preferably the above method is applied in a demolition operation wherein the tool is a cutting tool and wherein the demolition operation comprises cutting struts, pipes, beams or floors of a structure using the cutting tool. The structure may be for example a building, a support structure, a bridge and/or an off-shore 15 structure.
For a better understanding of the present invention, and to show more clearly how it may be carried into effect, reference will now be made, by way of 20 example, to the accompanying drawings, in which:
Figure 1 is a schematic representation of a machine;
Figure 2 is an exploded perspective view of a demolition head; 25
Figure 3 is a side elevation view of the demolition head shown in Figure 2;
Figure 4 is a section view along line A-A shown in Figure 3; and 30 Figure 5 is a schematic representation of a system for determining load acting on a demolition head.
6
Figure 1 shows a machine 2 comprising a base 4, a boom 6 and a demolition head 8. Figure 1 also shows the hydraulic actuators 6a which can move the different parts of the boom in a plane.
5 Figure 2 is an exploded view of the demolition head 8 shown in Figure 1. The demolition head 8 comprises a tool 10 for performing a demolition operation, a mount 12 and a connector 14. Such a connector 14 is also known as a so-called upper head.
10 The tool 10 is a cutting tool. The tool 10 comprises an elongate housing 16, an upper jaw 18 and a lower jaw 19. The jaws 18,19 are pivotally supported by the housing 16. The jaws 18, 19 extend outwardly from one end of the housing 16 and are actuable, for example by hydraulic actuators, between an open condition and a closed condition. The jaws 18, 19 are actuable from the open 15 condition to the closed position to perform a shearing/cutting action on objects arranged between the jaws 18, 19. The jaws 18, 19 define at least one cutting plane of the tool 10 along which the shearing/cutting action is generated which extends perpendicularly to the pivot of the jaws 18, 19.
20 The mount 12 comprises a bracket 20 having a base plate 22 from which a first pair of support structures 24 and a second pair of support structures 26 project. The support structures 24, 26 extend perpendicularly to the base plate 22. The first pair of support structures 24 are spaced apart from each other in a transverse direction of the demolition head 8. The second pair of support 25 structures 26 are also spaced apart from each other in the transverse direction of the demolition head 8 and are disposed between the first pair of support structures 24. The transverse direction of the demolition head 8 is a direction which is perpendicular to the longitudinal direction of the demolition head 8.
30 As shown in Figure 3, the end of the housing 16 opposite the jaws 18, 19 is connected to the mount 12. The lower portion of the housing 16 is connected to the mount 12 by a hinge 28. The upper portion of the housing 16 is connected to the mount 12 by two separate pins 30, 32. The pins 30, 32 extend coaxially 7 and are spaced apart from each other in the transverse direction of the demolition head 8.
The hinge 28 comprises a rod 34 which extends through respective openings 5 36 provided in opposite side walls 38 of the housing 16 and corresponding openings 40 provided in the respective first support structures 24. Each end of the rod 34 is held by an auxiliary bracket 42 which is secured to a side wall 38 of the housing 16. The rod 34 is secured against rotation with respect to the brackets 42 by respective dowels 41 which extend through the respective ends 10 of the rod 34 and engage with notches 43 provided in the brackets 42. The rod 34 is rotatable with respect to the mount 12 so that the tool 10 is pivotable with respect to the mount 12 about the hinge 28.
Each pin 30, 32 extends through a respective opening 44 provided in the side 15 walls 38 of the housing 16 and corresponding openings 46 provided in the first pair of support structures 24 and openings 48 provided in the second pair of support structures 26. Each pin 30, 32 is rotatable with respect to the housing 16.
20 Each pin 30, 32 comprises a cavity (not shown) in the form of a bore which extends substantially along the length of the pin 30, 32. Respective first and second transducers 104, 106 (shown schematically in Figure 5) in the form of a strain gauges are disposed within the respective cavities. Each strain gauge is fixed to the internal wall of the respective pin 30, 32 such that it deforms to 25 produce a change in strain when the pin 30, 32 is flexed. A cap 50 is provided at the end of each pin 30, 32 to seal the strain gauge within the cavity. Respective fastening plates 52 (shown in Figure 2 only) are secured over the openings 46 in the first pair of support structures 24 to secure the pins 30, 32 in position.
The mount 12 is rotatably mounted on the connector 14 via a bearing arrangement 54. The bearing arrangement 54 comprises an inner race 56, an 30 8 outer race 58 and a plurality of rollers 60 disposed between the inner and outer races 56, 58. The mount 12 is fixed for rotation with the inner race 56.
The bearing arrangement 54 is arranged such that the mount 12 and tool 10 are 5 rotatable with respect to the connector 14 in a plane which extends in the transverse direction of the demolition head 8.
A spigot 62 extends from the connector 14, through a central opening 64 in the base plate 22. The spigot 60 has a tip 66 provided with hydraulic connectors 10 which engages with corresponding connectors within the housing 16 . The tip 66 is rotatable with respect to the remainder of the connector 14 such that the connectors rotate with the tool 10 and the mount 12.
Figure 5 is a schematic representation of a system 100 for determining load 15 acting on the demolition head 8.
The system comprises a detection unit 102 and a load determining unit 104.
The detection unit 102 is arranged on the demolition head 8 and the load determining unit 104 is arranged on the machine body 4. It will be appreciated 20 that the load determining unit 104 could be arranged on the boom 6, or remotely of the machine 2.
The detection unit 102 comprises the first and second transducers. The first transducer consists of a sensor 105, an amplifier 107 and a transmitter 109.
25 The second transducer consists of a sensor 106, an amplifier 108 and a transmitter 110. The amplifiers 107, 108 and the transmitters 109, 110 are powered by a power source 111, such as a battery.
The outputs of the first and second sensors 105, 106 are connected to amplifiers 107,108. The output of the amplifier 107,108 are connected to the 30 respective transmitters 109, 110. The transmitters 109, 110 comprises an antenna for transmitting two wireless signals.
9
The load determining unit 104 comprises a receiver 112 for receiving the signal from transmitter 109 and a receiver 113 for receiving the signal from transmitter 110. The unit 104 further comprises a processor 114, a memory 115, a display 116 and an output 117. The output of the receivers 112, 113 are connected to 5 the processor 114. The processor may combine both signals to one signal.
The processor 114 is arranged in communication with both the memory 115, the display 122 and output 117. The memory 115 is arranged to store data, in particular predetermined load data, such as a parameter relating to load.
10 The output 117 may be an alarm, such as a light or audible alarm or may be the input of a machine control system which may in turn generate a machine stop and/or an alarm.
In use, the demolition head 8 is manoeuvred into position by the machine 2.
15 For example, the demolition head 8 may be moved to perform a cutting operation on a beam of a structure. The jaws 18, 19 are held in the open condition. During the manoeuvre, the tool 10 (together with the mount 12) can be rotated with respect to the connector 14 so that the jaws 18, 19 are disposed on opposite sides of the beam.
20
Once the jaws 18, 19, have been arranged on opposite sides of the beam, the jaws 18,19 are actuated to cut the beam. As the jaws 18,19 close on the beam, a reaction force is exerted on the tool 10 which is measured by sensors 105, 106. The direction and magnitude of the force is dependent on the 25 properties of the beam, for example its size, strength and orientation with respect to the cutting plane of the tool 10. The force will also be dependent on the orientation of the demolition head 8 with respect to the boom 6. When the cutting plane is in line with the plane of the boom 6 some of the reaction force may be dampened by the hydraulic actuators 6a of the boom 6 itself. When one 30 or more of the hydraulic actuators 6a are at their extreme position or when the cutting plane is more transverse relative to the boom such dampening of the boom hydraulics will be less or non existing. The reaction forces can be higher 10 in such a situation, requiring the demolition head according to the present invention to avoid damage.
The reaction force exerted by the beam on the tool 10 causes the pins 30, 32 disposed between the tool 10 and the mount 12 to flex. The hinge 28 allows the 5 tool 10 to move with respect to the mount 12 in the cutting plane of the tool 10. The hinge 28 ensures that moments acting about the hinge 28 are resisted entirely by the pins 30, 32 .
Flexing of the pins 30, 32 varies the signal outputted by each of the sensors 10 105, 106 of said first and second transducers. In the present embodiment in which the sensors 105, 106 are strain gauges, the signal outputted by each of the sensors 105, 106 is a voltage which varies in relation to the strain in the gauges.
15
The transmitter 109, 110 transmits two signals to the receivers 112, 113. The receiver 112, 113 receives the signals, and outputs the signals to the processor 114 as an electric signal. The advantage of combining the two signals at unit 104 is that less complicated electronics can be used in unit 102.
20
The processor 114 determines the load acting on the demolition head 8 based on the two signals. The processor 114 retrieves a stored load value from the memory 115. The retrieved load value corresponds to a load acting on the demolition head which is a maximum desired operating load.
25
The processor 114 then compares the determined load acting on the demolition head against the retrieved load. If the determined load exceeds the predetermined load, this is displayed on the display 116 to alert an operator or may be outputted as 117 as the input of a machine control system which may in 30 turn generate a machine stop and/or an alarm.
11
Alternatively, or in addition, the outputted signal may be recorded directly, or instances in which the outputted signal exceeds the predetermined value are recorded as events, to enable past operation of the machine 2 to be evaluated.
5 It will be appreciated that the invention could also be incorporated in demolition heads comprising other types of tool such as a crusher or a demolition hammer.

Claims (24)

1. Sloopkop, omvattende: een gereedschap voor het uitvoeren van een sloophandeling, en 5 een transducer die is opgesteld om een parameter te detecteren die verband houdt met een belasting die inwerkt op de sloopkop.A demolition head, comprising: a tool for performing a demolition operation, and a transducer arranged to detect a parameter related to a load acting on the demolition head. 2. Sloopkop volgens conclusie 1, waarbij twee transducers aanwezig zijn, waarbij elke transducer is voorzien van een sensorelement, en waarbij de sensor van de eerste 10 transducer zich op een afstand bevindt van de sensor van de tweede transducer.2. Demolition head according to claim 1, wherein two transducers are present, wherein each transducer is provided with a sensor element, and wherein the sensor of the first transducer is at a distance from the sensor of the second transducer. 3. Sloopkop volgens conclusie 1, waarbij de transducer is voorzien van eerste en tweede sensorelementen die op een onderlinge afstand zijn aangebracht.The demolition head according to claim 1, wherein the transducer is provided with first and second sensor elements arranged at a mutual distance. 4. Sloopkop volgens conclusie 2 of conclusie 3, waarbij de eerste en de tweede sensorelementen van de transducer volgens conclusie 3, of de sensorelementen van de eerste en tweede transducers volgens conclusie 2, op een onderlinge afstand zijn aangebracht in de dwarsrichting van de sloopkop.A demolition head according to claim 2 or claim 3, wherein the first and second sensor elements of the transducer according to claim 3, or the sensor elements of the first and second transducers according to claim 2, are arranged at a mutual distance in the transverse direction of the demolition head. 5. Sloopkop volgens één der voorgaande conclusies, waarbij de sloopkop bovendien voorzien is van een bevestiging voor het ondersteunen van het gereedschap, waarbij de transducer op een zodanige wijze is aangebracht dat hij een belasting detecteert die door het gereedschap op de bevestiging wordt uitgeoefend.A demolition head according to any one of the preceding claims, wherein the demolition head is furthermore provided with a mounting for supporting the tool, the transducer being arranged in such a way that it detects a load exerted on the mounting by the tool. 6. Sloopkop volgens conclusie 5, waarbij het gereedschap verbonden is met de bevestiging door middel van een scharnier, en waarbij de transducer zich op een afstand bevindt van de as van de scharnier.The demolition head according to claim 5, wherein the tool is connected to the mounting by means of a hinge, and wherein the transducer is spaced from the axis of the hinge. 7. Sloopkop volgens conclusie 6, waarbij de eerste en tweede sensorelementen van de 30 transducer volgens conclusie 3, of de sensorelementen van de eerste en tweede transducers volgens conclusie 2, op een onderlinge afstand van elkaar zijn aangebracht in een richting die parallel is aan de as van de scharnier.7. The demolition head according to claim 6, wherein the first and second sensor elements of the transducer according to claim 3, or the sensor elements of the first and second transducers according to claim 2, are arranged at a mutual distance from each other in a direction parallel to the axis of the hinge. 8. Sloopkop volgens conclusie 7, waarbij de sensorelementen een pen omvatten, en waarbij het gereedschap en de bevestiging onderling verbonden zijn door de pen.The demolition head of claim 7, wherein the sensor elements comprise a pin, and wherein the tool and the attachment are interconnected by the pin. 9. Sloopkop volgens conclusie 8, waarbij de transducer is voorzien van een rekstrookje dat is aangebracht om schuifkrachten te detecteren die inwerken op de pen.The demolition head of claim 8, wherein the transducer includes a strain gauge arranged to detect shear forces acting on the pin. 10. Sloopkop volgens conclusie 9, waarbij de pen is voorzien van een holle ruimte, en waarbij het rekstrookje is aangebracht in de holle ruimte. 10The demolition head according to claim 9, wherein the pin is provided with a hollow space, and wherein the strain gauge is arranged in the hollow space. 10 11. Sloopkop volgens één der voorgaande conclusies, waarbij het gereedschap een snijdend gereedschap is dat is voorzien van een snijvlak, en waarbij de transducer is opgesteld om een belasting te detecteren die op het gereedschap in het snijvlak inwerkt.A demolition head according to any one of the preceding claims, wherein the tool is a cutting tool provided with a cutting surface, and wherein the transducer is arranged to detect a load acting on the tool in the cutting surface. 12. Sloopkop volgens conclusie 11, waarbij de eerste en tweede sensorelementen van de transducer volgens conclusie 3, of de sensorelementen van de eerste en tweede transducers volgens conclusie 2, zijn voorzien langs tegenover elkaar gelegen zijden van het snijvlak.The demolition head of claim 11, wherein the first and second sensor elements of the transducer of claim 3, or the sensor elements of the first and second transducers of claim 2, are provided on opposite sides of the cutting surface. 13. Sloopkop volgens één der voorgaande conclusies, waarbij de sloopkop bovendien voorzien is van een verbindingselement dat kan verbonden worden met een arm van een machine, en waarbij het gereedschap kan roteren ten opzichte van het verbindingselement.A demolition head according to any one of the preceding claims, wherein the demolition head is furthermore provided with a connecting element that can be connected to an arm of a machine, and wherein the tool can rotate relative to the connecting element. 14. Sloopkop volgens één der voorgaande conclusies, waarbij de transducer verbonden is met een transmitter voor het uitzenden van een signaal dat representatief is voor de belasting.A demolition head according to any one of the preceding claims, wherein the transducer is connected to a transmitter for transmitting a signal representative of the load. 15. Sloopkop volgens conclusie 14, waarbij de transmitter is opgenomen in de sloopkop. 30The demolition head of claim 14, wherein the transmitter is included in the demolition head. 30 16. Machine die is voorzien van een machinelichaam, van een arm die zich uitstrekt vanaf het machinelichaam, en van een sloopkop volgens één der voorgaande conclusies, waarbij de sloopkop verbonden is met het vrije einde van de arm.A machine provided with a machine body, with an arm extending from the machine body, and with a demolition head according to any one of the preceding claims, wherein the demolition head is connected to the free end of the arm. 17. Machine volgens conclusie 16, waarbij het machinelichaam of de arm is voorzien van een ontvanger voor het ontvangen van een signaal dat representatief is voor de belasting.The machine of claim 16, wherein the machine body or arm is provided with a receiver for receiving a signal representative of the load. 18. Machine volgens conclusie 16 of conclusie 17, waarbij de machine bovendien is voorzien van een eenheid voor het bepalen van een belasting, waarbij de belastingbepalende eenheid is opgesteld om een belasting te bepalen die inwerkt op de sloopkop.A machine according to claim 16 or claim 17, wherein the machine is furthermore provided with a load-determining unit, the load-determining unit being arranged to determine a load which acts on the demolition head. 19. Machine volgens conclusie 18, waarbij de belastingbepalende eenheid in communicatieverbinding staat met een display voor het weergeven van gegevens die betrekking hebben op de belasting die inwerkt op de sloopkop.The machine of claim 18, wherein the load determining unit is in communication connection with a display for displaying data relating to the load acting on the demolition head. 20. Kit met onderdelen, een machinelichaam omvattende, alsook een arm en een sloopkop 15 volgens één der conclusies 1-15.A kit with parts, comprising a machine body, as well as an arm and a demolition head 15 according to any one of claims 1-15. 21. Werkwijze voor het gebruiken van een machine die is voorzien van een sloopkop die op zijn beurt een gereedschap omvat voor het uitvoeren van een sloophandeling, alsook van een transducer die is opgesteld om een parameter te detecteren die verband houdt met 20 een belasting die inwerkt op de sloopkop, waarbij de werkwijze omvat: het detecteren van een parameter die verband houdt met een belasting die inwerkt op de sloopkop, door gebruik te maken van de transducer; het genereren van een belastingsignaal dat representatief is voor de parameter; het bepalen of het belastingsignaal een vooraf bepaalde waarde overschrijdt; en 25 het genereren van een waarschuwing of het initiëren van een machinestop indien het signaal de voorafbepaalde waarde overschrijdt.21. Method of using a machine provided with a demolition head which in turn comprises a tool for performing a demolition operation, as well as a transducer arranged to detect a parameter related to a load that acts on the demolition head, the method comprising: detecting a parameter related to a load acting on the demolition head by using the transducer; generating a load signal representative of the parameter; determining whether the load signal exceeds a predetermined value; and generating a warning or initiating a machine stop if the signal exceeds the predetermined value. 22. De werkwijze volgens conclusie 21, waarbij de parameter verband houdt met een maximum toelaatbare belasting die in een vooraf bepaalde richting inwerkt op de 30 sloopkop.22. The method according to claim 21, wherein the parameter relates to a maximum allowable load that acts on the demolition head in a predetermined direction. 23. Werkwijze volgens conclusie 22, waarbij de vooraf bepaalde richting een dwarsrichting is van de sloopkop.The method of claim 22, wherein the predetermined direction is a transverse direction of the demolition head. 24. Werkwijze volgens één der conclusies 21-23, waarbij de werkwijze wordt gebruikt in 5 een sloophandeling, waarbij het gereedschap een snijdend gereedschap is, en waarbij de sloophandeling het doorsnijden omvat van kolommen, buizen, balken, of vloeren van een structuur, door gebruik te maken van het snijdende gereedschap. 1024. A method according to any one of claims 21-23, wherein the method is used in a demolition operation, wherein the tool is a cutting tool, and wherein the demolition operation comprises cutting through columns, tubes, beams, or floors of a structure, by to use the cutting tool. 10
NL2008684A 2011-12-29 2012-04-23 Demolition head and method of operating thereof. NL2008684C2 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2987918A1 (en) * 2014-08-18 2016-02-24 Caterpillar Work Tools B. V. Removable pin stub

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2987918A1 (en) * 2014-08-18 2016-02-24 Caterpillar Work Tools B. V. Removable pin stub
WO2016026677A1 (en) * 2014-08-18 2016-02-25 Caterpillar Work Tools B.V. Removable pin stub

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