CA1234975A - Machine for cutting off or planing off road surfaces - Google Patents
Machine for cutting off or planing off road surfacesInfo
- Publication number
- CA1234975A CA1234975A CA000489825A CA489825A CA1234975A CA 1234975 A CA1234975 A CA 1234975A CA 000489825 A CA000489825 A CA 000489825A CA 489825 A CA489825 A CA 489825A CA 1234975 A CA1234975 A CA 1234975A
- Authority
- CA
- Canada
- Prior art keywords
- planing
- cutting
- cutting tool
- machine according
- displaceable
- 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.)
- Expired
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- 238000005520 cutting process Methods 0.000 title claims abstract description 125
- 230000007246 mechanism Effects 0.000 claims abstract description 21
- 230000009183 running Effects 0.000 claims abstract description 21
- 230000002706 hydrostatic effect Effects 0.000 claims description 4
- 230000002349 favourable effect Effects 0.000 description 5
- 238000010276 construction Methods 0.000 description 3
- 101100285518 Drosophila melanogaster how gene Proteins 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 229910052729 chemical element Inorganic materials 0.000 description 1
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- Road Repair (AREA)
Abstract
Abstract In a machine for cutting off or planing off road surfaces, having a chassis with an independent drive motor, a steerable wheeled and/or tracked running mecha-nism and a cutting or planing device which is fixed in a vertically adjustable manner to the chassis, which cutting or planing device contains at least one planing or cutting tool, at least two planing or cutting tools which are arranged one behind the other in the direction of travel are available, of which at least one is designed in such a way that it can be displaced across the direc-tion of travel. In this way, road surfaces, even with a curved road run or in parking bays, can be cut off or planed off without difficulty.
Description
,~L~`3~"3'~t''3 --2~
The invention relates ~o a machine for cuttlng off or planing off road surfaces~ having a chassis with an independent drive motor, a steerabLe wheeled and/or 5 tracked running mechanism and a cutting or planing device which is fixed in a vertically adjustable manner to ~he chassis, ~hich cutting or planing device contains at least one planing sr cutting tool.
For cutting off~ or planing off road surfaces, 10 machines of the abovementioned type are known which are equipped with a planing or cutting tool ~hich extends over an essential part of the track width of the wheeled and/or tracked running mechanism. With such machines, road surfaces of the most varied materials can be cleanly 15 removed to the required depth in a cost effecti~e manner.
Certain problems occur only in the area of the road edge, because here the righthand or the lefthand part of the machine has to travel on ~he road embankment. Moreover, the unevenness which is normally present in the road em-20 bankment leads to undesirable changes in the cuttingdepth. Similar problems occur when parking bays are arranged along the run of the road and at the same level as the road, or when the road has a curved run.
Although these disadvantages can be removed by 25 a cutting or planing device being provided, the planing ~-.
or cutting tool of which projects beyond the track width of the wheeled and/or tracked running mechanism, these known machines have the disadvantage that, because of their overwidth, they can only be moved from one usage 30 s;te to another with the special permission of the rele-vant authorities~
The latter also applies in the same way for another known machine in ~hich the c~tting or planing tool projects beyond the track width of the wheeled and/
35 or tracked running mechanism and is rotatably fixed to the chassis so that the planing or rutting tool, when the machine is moved from one usage site to ano~her, can be swung into the machine surface ~erminated Dy the run-ning mechanism. Although this ensures that no parts of ~.
'7~a the cutting device project beyond the track width of the wheeled and/or tracked running mechanism during the actual travelling operationr the chassis has to be designed disproportionately long so that the planing or cutting 5 tool can s~ing into the space provided by the track ~id~h of the vehicle. The consequence of this is that the centre part of the machine moves out beyond the road centre even with small radii o~ curvature of the roadO
These disadvant3ges of the known machines are to 10 be removed by the invention. It is therefore the object of the inv~ntion to create a machine for cutting off or planing off road surfaces, with ~hich machine road edges~
curved road runs, parking bays and suchlike can be satis-factorily treated without difficulty, and which~ moreo~er, 15 is constructed in such a way that it can easily be moved from one usage site to another and in particular wi~hout special official permission.
Based on a machine of the generic type described at ~he beginning, this object is achieved according to 20 the invention by the planing or cutting device comprising at least two plan;ng or cutting tools arranged one behind the other in the direction of travel, of which at least one is designed in such a way that it can be displaced across the direction of travel.
This measure according to the invention allows a ma~hine to be constructed in standard track width and length which can be driven from one usage site to ano~her without difficuLty and with retracted planing or cutting tools. During the planing or cutting operationr the dis-25 placeably arranged planing or cutting tool can remain so long in its retracted position until it is required for cutting off or planing off a road bend, a parking bay or suchlike. The planing or cutting tool is then moved out beyond the track width of the wheeled and/or tracked 30 running mechanism by a hydraulic or a pneumatic drive, and in fact as far as is necessary to carry out the cu~-ting or planing ~ork. ~ut there is also the possibility~
when treating a road having an essentially straight-running road edge, of using the displaceable planing or cutting _9_ tool in an extended position beyond the track width during the entire travelling operation. ~ecause of the conse-quent increase in cutting width~ the work can in certain circumstances be carried out quicker~
According to an advantageous embodiment, an a~ially fixed planing or cutting tool is available qhich extends at least over an essential part of the track width of the wheeled and/or tracked running mechanism and which is arranged in front of the displaceable plan-10 ing or cutting tool(s) as viewed in the direction of travel. Such an embodiment has the advantage that, when the planing or cutting tool is retracted, only the axially fixed planing or cutting tool is in operation. Moreover, favourable force relationships result which allow a rela-15 tively less costly attachment of the displaceable planingor cutting tool. A certain disadvantage is that convey-ing cut off or planed off material back to~ards the collecting devices arranged on the machine involves cer-tain problems, especially when a cutting roller which 20 rotates against the direction of travel is used as the cutting tool.
The last mentioned disadvantage can be avoided by a preferred embodiment of the invention in ~hich an axially fixed planing or cutting tool is available ~hich Z5 extends at least over an essential part of the track width of the wheeled and/or tracked running mechanism and ~hich is arranged behind the displaceable planing or cutting tool(s) as viewed in the direction of travel. When a cutting roller which rotates against the direction of 30 traveL is used as the cutting tool, the axially fixed cu~ting tool takes over the conveyance of the trimmed material back towards a receiving device which directly adjoins the cutting tool and is intended for the cut off material over the entire track width. In this construc-35 tional embodiment~ however, the forces acting on the displaceable planing or cutting ~ool are not insignifi- -cantly higher than in the previously described embodiment, which makes necessary special design measures for the attachment of the planing or cutting tooL. Nevertheless, ~3'~3 ~ ~
this embodiment is to be preferred to the previously described embodiment, especially when the cutting rollers which rotate against the direction of travel can b~ used as cutting tools.
According to an advantageous embodiment of the invention, a displaceable planing or cutting tool is available which extends over an essential part of the track ~idth of the wheeled and~or tracked running mecha-nism. In the most favourable case, such a pLaning or 10 cutting tool allows the planing or cutting width to be doubled, although with very unfavourable force relation-ships then occurring at the extended planing or cutting tool. The latter can be avoided by a displaceable plan-ing or cu~ting tool being available which extends over 15 approximately half of or less than half of the track width of the wheeled and/or tracked running mechanism.
It is of advantage ~o arrange this displaceable planing or cutting tool in the righthand area of the chassis as viewed in the direction of travel, because it is primarily 20 required on this side for planing off or cutting off cur-ved road edges~ parking bays or suchlike.
In a preferred embodiment, ~wo displaceable plan-ing or cutting tools are available which are arranged in an axially aligned manner nex~ to one another. In this 25 way, the track width, as in the previously described embodiment, can be almost doubled in the most favourable case~ but substantially more favourable force relation-ships occur at the attachments of the cutt;ng or planing tools~ Moreover, such an embodiment allo~ls a subs~an-30 tially more favourable and easier- handling and adaption to the most varied planing or cutting tas~s.
It has proved to be expedient to design the width of each of the two planing or cutting tools to be essen-tially the same size and to select the ~idth in such a 35 way that, when the planing or cutting tools are retracted~
the overall clearance width of the two planin~ or cu~ting tools is at the most equal to the clearance wid~h of the fixed planing or cutting tool. This ensures that the handling of the machine during the actual ~ravelling ~1~3~
--6~
operation is not adversely influenced by the cutting device.
In a preferred embodiment of the invention, the axially fixed planing or cutting tool on the one hand 5 and the displaceable planing or cutting tool(s) on the other h3nd are vertically adjustable relative to one another. This allows cutting off or planing off of the road surface at depths which become smaller ~owards the road edge, which is often desirable to avoid damaging or 10 destroying deeper layers of the road construction at the road edge.
It has proved to be particularly expedient to combine the axially fixed planing or cutting tool and each displaceable planing or cutting tool in a comnon 15 hol~er which is fixed in a vertically adjustable manner to the chassis. In ~his way, a particularly con)pact machine construction can be achieved which improves the handling of the machine during the actual travelling operation~ Moreover, this measure facilitates an opti-20 mu~ construction of the planing or cutting device ~ithregard to the force relationships which occur. In a planing or cutting device with an axially fixed planing or cutting tool which~ ;n the direction of travel, is arranged behind the displaceable planing or cutting 25 tool(s)~ this can be realised by a boxlike holding fix-ture being allocated to each planing or cutting tool, in which holding fixture the planing or cutting tool is mounted~ by the holding fixture allocated to the axially fixed planing or cutting tool being rigidly fixed to a 30 support and by the hotding fixtures allocated to the dis-placeable planing or cutting tools being displaceably fixed along the longitudinal axis to the support in such a way that the moveable holding fixtures, at their rear-sides, sit against the rigidly fixed holding fixture, and 35 by the rigidly fixed holding fixture, on its side facing away from the other holding fixtures, supporting one part of a vertical-slide guidance system, the other part of which is rigidly connected ~o the chassis. In this connec-- tion, the moveable holding fixtures are therefore supported against th~ rigidly fixed holding fixture at least during the planing or cutting operation, whereas the rigidly fixed holding fixture can be supported on the chassis by the vertical-slide guidance system. The ~onsequence is 5 that comparatively less costly at~achments can be used for the moveable holding fixtures~
So that the support does not stick when 00ving, it is advisable to connect the support end which supports the moveable holding fixtures to the chassis via a vertical 10 guide.
It has proved to be expedient to design the sides of the moveable holding fixtures which s;t against the rigidly fixed holding fixture as baffle plates which con-vey the cut off or planed off ma~erial towards the track 15 centre of the running mechanism. This ensures that the material cut off or planed off by the moveable cutting or pLaning tools also reaches into the area of the machine devices ~hich receive and convey away the material.
ln a machine ~ith cutting tools it is advisable 20 for each cutting tool to be designed as a cutting roller, each of which is coupled to a hydrostatic drive. This can be accomrnodatad in an axial recess of the roller.
The invention is described in greater de~ail with reference to the drawing, which shows an illustrat;ve 25 embodiment in partial schematic representation and wherein:
Figure 1 shows a side view of a machine for cutting off road surfaces~ and Figur~ 2 shows a plan view of the cutting device with extended cutting rollers.
The machine for cutting off road surfaces consists of a chassis 1 with a steerable front wheel pair Z and a tracked running mechanism 4 which is accommodated in the rear part of the chassis 1 and driven by a diesel engine 3. In front of the diesel engine 3 is located the driver's 35 compartment 5 ~lth a driver's seat 6, a steering wheel 7 and control levers B.
The cutting device 9 is arranged on thé chassis 1 between the front wheel pair 2 and ~he tracked running mechanism 4.
d~r~
The cu~ing device 9 ~onsists o-F a framelike support 10 having a centre strut 11 wi~h a ~ounting lug 12 on which the moveable part 13 of a hydraulic position~
ing cylinder 14 engages. The positioning cy~inder 14 5 sits in a retaining frame 15 which is rigidly connected to the chassis 1.
The cutting device 9 comprises three cutting rollers 16, 17 and 18, of ~hich the cutting roller 16 is arranged in an axially fixed manner and the cutting lO rollers 17 and 18 are arranged in an axially displ3ceable manner.
The axially fixed cutting roller 16 is mounted in two side suppor~ plates 19 and 20 which are bolted or ~elded onto the support 10. The t~o side support plates 15 19 and 20 are connected to one another by a longitudinal strut 21 which can be designed as a wall. The side sup-port plates 19 and 2C and the longitudinal stru~ 21 form a boxlike holding fixture 22 for the cutting roller 16.
Like the cutting roller 16 the cutting rollers 20 17 and 18 are each rotatably mounted in a boxlike hold-ing f;xture 23 or 24. Each of these holding fixtures Z3 and 24 consists o-f two side support plates 25 and 26 or 27 and 28 which are cor,nected to one another by longi-tudinal struts 29 and 30 or 31 and 32 which can be 25 designed wall like. Each of the side suppor~ plates 25 to 28 is provided with two mounting lugs 33 in which guide bars 34 sit. The guide bars 34~ in turn~ each penetrate a mounting lug 3~ sitting on the support 10.
The holdin~ fixtures 23 and 24 are guided on the 30 one hand by the guide bars 34 and the mounting lu~s 35 and on the other hand by the longitudinal strut 21, against which the holding fixtures 23 and 24, by their longitudinal struts 30 and 32, can be supported in par-ticular during the cutting operation.
The holding fixtures 23 and 24 with the cutt;ng rolLers 17 and 18 are displaced by two positioning cylin-ders 36 and 37 which are fixed on the centre strut 11 and are connected by their moveable part 38 or 39 ~o a side plate extension 40 or 41.
.L~..3~'3~t.3 _9_ The cutting device 9 is also supported on ehe rear part of the retaining frame 15 by the support 10, at least during the cutting operation, with vertical-slide guidance systems 4Z and 43 preventing the support 5 10 from coming away sideways out of the retaining frame 15. These vertical-slide guidance systems 42 and 43 each consist of two grooves 44 located in the re~aining frame 15, into each of which grooves 4~ engages a sliding ele-ment 45 fixed on the support 10~
Hydrostatic drives 46 are provided for driving cutting rollers 16, 17 and 18, which hydrostatic drives 46 are arranged in axial recesses of the cutting rollersO
Whereas in the embodiment described above the cutting device 9 is vertically adjusted by a single hy-15 draulic positioning cylinder 14 ~hich engages on a centrestrut 11 by the mounting lug 12, it has proved to be expe-dient according to another advantageous embodiment of the present invention to arrange in a vertically adjust-able manner the cutting unit consisting of three cutting 20 rollers by two hydraulic positionin3 cylinders ~hich are arranged next to one another as viewed in the direction of travel.
To prevent lateral swinging out, only one vertical-sl;de guidance system is expediently provided in 25 this embodimen~. A lateral inclination of the cutting-roller unit can then be achieved by different pressures being applied to the t~o positioning cylinders, by means of which cutting-roller unit cutting off to varying depths becomes possibleO
The invention relates ~o a machine for cuttlng off or planing off road surfaces~ having a chassis with an independent drive motor, a steerabLe wheeled and/or 5 tracked running mechanism and a cutting or planing device which is fixed in a vertically adjustable manner to ~he chassis, ~hich cutting or planing device contains at least one planing sr cutting tool.
For cutting off~ or planing off road surfaces, 10 machines of the abovementioned type are known which are equipped with a planing or cutting tool ~hich extends over an essential part of the track width of the wheeled and/or tracked running mechanism. With such machines, road surfaces of the most varied materials can be cleanly 15 removed to the required depth in a cost effecti~e manner.
Certain problems occur only in the area of the road edge, because here the righthand or the lefthand part of the machine has to travel on ~he road embankment. Moreover, the unevenness which is normally present in the road em-20 bankment leads to undesirable changes in the cuttingdepth. Similar problems occur when parking bays are arranged along the run of the road and at the same level as the road, or when the road has a curved run.
Although these disadvantages can be removed by 25 a cutting or planing device being provided, the planing ~-.
or cutting tool of which projects beyond the track width of the wheeled and/or tracked running mechanism, these known machines have the disadvantage that, because of their overwidth, they can only be moved from one usage 30 s;te to another with the special permission of the rele-vant authorities~
The latter also applies in the same way for another known machine in ~hich the c~tting or planing tool projects beyond the track width of the wheeled and/
35 or tracked running mechanism and is rotatably fixed to the chassis so that the planing or rutting tool, when the machine is moved from one usage site to ano~her, can be swung into the machine surface ~erminated Dy the run-ning mechanism. Although this ensures that no parts of ~.
'7~a the cutting device project beyond the track width of the wheeled and/or tracked running mechanism during the actual travelling operationr the chassis has to be designed disproportionately long so that the planing or cutting 5 tool can s~ing into the space provided by the track ~id~h of the vehicle. The consequence of this is that the centre part of the machine moves out beyond the road centre even with small radii o~ curvature of the roadO
These disadvant3ges of the known machines are to 10 be removed by the invention. It is therefore the object of the inv~ntion to create a machine for cutting off or planing off road surfaces, with ~hich machine road edges~
curved road runs, parking bays and suchlike can be satis-factorily treated without difficulty, and which~ moreo~er, 15 is constructed in such a way that it can easily be moved from one usage site to another and in particular wi~hout special official permission.
Based on a machine of the generic type described at ~he beginning, this object is achieved according to 20 the invention by the planing or cutting device comprising at least two plan;ng or cutting tools arranged one behind the other in the direction of travel, of which at least one is designed in such a way that it can be displaced across the direction of travel.
This measure according to the invention allows a ma~hine to be constructed in standard track width and length which can be driven from one usage site to ano~her without difficuLty and with retracted planing or cutting tools. During the planing or cutting operationr the dis-25 placeably arranged planing or cutting tool can remain so long in its retracted position until it is required for cutting off or planing off a road bend, a parking bay or suchlike. The planing or cutting tool is then moved out beyond the track width of the wheeled and/or tracked 30 running mechanism by a hydraulic or a pneumatic drive, and in fact as far as is necessary to carry out the cu~-ting or planing ~ork. ~ut there is also the possibility~
when treating a road having an essentially straight-running road edge, of using the displaceable planing or cutting _9_ tool in an extended position beyond the track width during the entire travelling operation. ~ecause of the conse-quent increase in cutting width~ the work can in certain circumstances be carried out quicker~
According to an advantageous embodiment, an a~ially fixed planing or cutting tool is available qhich extends at least over an essential part of the track width of the wheeled and/or tracked running mechanism and which is arranged in front of the displaceable plan-10 ing or cutting tool(s) as viewed in the direction of travel. Such an embodiment has the advantage that, when the planing or cutting tool is retracted, only the axially fixed planing or cutting tool is in operation. Moreover, favourable force relationships result which allow a rela-15 tively less costly attachment of the displaceable planingor cutting tool. A certain disadvantage is that convey-ing cut off or planed off material back to~ards the collecting devices arranged on the machine involves cer-tain problems, especially when a cutting roller which 20 rotates against the direction of travel is used as the cutting tool.
The last mentioned disadvantage can be avoided by a preferred embodiment of the invention in ~hich an axially fixed planing or cutting tool is available ~hich Z5 extends at least over an essential part of the track width of the wheeled and/or tracked running mechanism and ~hich is arranged behind the displaceable planing or cutting tool(s) as viewed in the direction of travel. When a cutting roller which rotates against the direction of 30 traveL is used as the cutting tool, the axially fixed cu~ting tool takes over the conveyance of the trimmed material back towards a receiving device which directly adjoins the cutting tool and is intended for the cut off material over the entire track width. In this construc-35 tional embodiment~ however, the forces acting on the displaceable planing or cutting ~ool are not insignifi- -cantly higher than in the previously described embodiment, which makes necessary special design measures for the attachment of the planing or cutting tooL. Nevertheless, ~3'~3 ~ ~
this embodiment is to be preferred to the previously described embodiment, especially when the cutting rollers which rotate against the direction of travel can b~ used as cutting tools.
According to an advantageous embodiment of the invention, a displaceable planing or cutting tool is available which extends over an essential part of the track ~idth of the wheeled and~or tracked running mecha-nism. In the most favourable case, such a pLaning or 10 cutting tool allows the planing or cutting width to be doubled, although with very unfavourable force relation-ships then occurring at the extended planing or cutting tool. The latter can be avoided by a displaceable plan-ing or cu~ting tool being available which extends over 15 approximately half of or less than half of the track width of the wheeled and/or tracked running mechanism.
It is of advantage ~o arrange this displaceable planing or cutting tool in the righthand area of the chassis as viewed in the direction of travel, because it is primarily 20 required on this side for planing off or cutting off cur-ved road edges~ parking bays or suchlike.
In a preferred embodiment, ~wo displaceable plan-ing or cutting tools are available which are arranged in an axially aligned manner nex~ to one another. In this 25 way, the track width, as in the previously described embodiment, can be almost doubled in the most favourable case~ but substantially more favourable force relation-ships occur at the attachments of the cutt;ng or planing tools~ Moreover, such an embodiment allo~ls a subs~an-30 tially more favourable and easier- handling and adaption to the most varied planing or cutting tas~s.
It has proved to be expedient to design the width of each of the two planing or cutting tools to be essen-tially the same size and to select the ~idth in such a 35 way that, when the planing or cutting tools are retracted~
the overall clearance width of the two planin~ or cu~ting tools is at the most equal to the clearance wid~h of the fixed planing or cutting tool. This ensures that the handling of the machine during the actual ~ravelling ~1~3~
--6~
operation is not adversely influenced by the cutting device.
In a preferred embodiment of the invention, the axially fixed planing or cutting tool on the one hand 5 and the displaceable planing or cutting tool(s) on the other h3nd are vertically adjustable relative to one another. This allows cutting off or planing off of the road surface at depths which become smaller ~owards the road edge, which is often desirable to avoid damaging or 10 destroying deeper layers of the road construction at the road edge.
It has proved to be particularly expedient to combine the axially fixed planing or cutting tool and each displaceable planing or cutting tool in a comnon 15 hol~er which is fixed in a vertically adjustable manner to the chassis. In ~his way, a particularly con)pact machine construction can be achieved which improves the handling of the machine during the actual travelling operation~ Moreover, this measure facilitates an opti-20 mu~ construction of the planing or cutting device ~ithregard to the force relationships which occur. In a planing or cutting device with an axially fixed planing or cutting tool which~ ;n the direction of travel, is arranged behind the displaceable planing or cutting 25 tool(s)~ this can be realised by a boxlike holding fix-ture being allocated to each planing or cutting tool, in which holding fixture the planing or cutting tool is mounted~ by the holding fixture allocated to the axially fixed planing or cutting tool being rigidly fixed to a 30 support and by the hotding fixtures allocated to the dis-placeable planing or cutting tools being displaceably fixed along the longitudinal axis to the support in such a way that the moveable holding fixtures, at their rear-sides, sit against the rigidly fixed holding fixture, and 35 by the rigidly fixed holding fixture, on its side facing away from the other holding fixtures, supporting one part of a vertical-slide guidance system, the other part of which is rigidly connected ~o the chassis. In this connec-- tion, the moveable holding fixtures are therefore supported against th~ rigidly fixed holding fixture at least during the planing or cutting operation, whereas the rigidly fixed holding fixture can be supported on the chassis by the vertical-slide guidance system. The ~onsequence is 5 that comparatively less costly at~achments can be used for the moveable holding fixtures~
So that the support does not stick when 00ving, it is advisable to connect the support end which supports the moveable holding fixtures to the chassis via a vertical 10 guide.
It has proved to be expedient to design the sides of the moveable holding fixtures which s;t against the rigidly fixed holding fixture as baffle plates which con-vey the cut off or planed off ma~erial towards the track 15 centre of the running mechanism. This ensures that the material cut off or planed off by the moveable cutting or pLaning tools also reaches into the area of the machine devices ~hich receive and convey away the material.
ln a machine ~ith cutting tools it is advisable 20 for each cutting tool to be designed as a cutting roller, each of which is coupled to a hydrostatic drive. This can be accomrnodatad in an axial recess of the roller.
The invention is described in greater de~ail with reference to the drawing, which shows an illustrat;ve 25 embodiment in partial schematic representation and wherein:
Figure 1 shows a side view of a machine for cutting off road surfaces~ and Figur~ 2 shows a plan view of the cutting device with extended cutting rollers.
The machine for cutting off road surfaces consists of a chassis 1 with a steerable front wheel pair Z and a tracked running mechanism 4 which is accommodated in the rear part of the chassis 1 and driven by a diesel engine 3. In front of the diesel engine 3 is located the driver's 35 compartment 5 ~lth a driver's seat 6, a steering wheel 7 and control levers B.
The cutting device 9 is arranged on thé chassis 1 between the front wheel pair 2 and ~he tracked running mechanism 4.
d~r~
The cu~ing device 9 ~onsists o-F a framelike support 10 having a centre strut 11 wi~h a ~ounting lug 12 on which the moveable part 13 of a hydraulic position~
ing cylinder 14 engages. The positioning cy~inder 14 5 sits in a retaining frame 15 which is rigidly connected to the chassis 1.
The cutting device 9 comprises three cutting rollers 16, 17 and 18, of ~hich the cutting roller 16 is arranged in an axially fixed manner and the cutting lO rollers 17 and 18 are arranged in an axially displ3ceable manner.
The axially fixed cutting roller 16 is mounted in two side suppor~ plates 19 and 20 which are bolted or ~elded onto the support 10. The t~o side support plates 15 19 and 20 are connected to one another by a longitudinal strut 21 which can be designed as a wall. The side sup-port plates 19 and 2C and the longitudinal stru~ 21 form a boxlike holding fixture 22 for the cutting roller 16.
Like the cutting roller 16 the cutting rollers 20 17 and 18 are each rotatably mounted in a boxlike hold-ing f;xture 23 or 24. Each of these holding fixtures Z3 and 24 consists o-f two side support plates 25 and 26 or 27 and 28 which are cor,nected to one another by longi-tudinal struts 29 and 30 or 31 and 32 which can be 25 designed wall like. Each of the side suppor~ plates 25 to 28 is provided with two mounting lugs 33 in which guide bars 34 sit. The guide bars 34~ in turn~ each penetrate a mounting lug 3~ sitting on the support 10.
The holdin~ fixtures 23 and 24 are guided on the 30 one hand by the guide bars 34 and the mounting lu~s 35 and on the other hand by the longitudinal strut 21, against which the holding fixtures 23 and 24, by their longitudinal struts 30 and 32, can be supported in par-ticular during the cutting operation.
The holding fixtures 23 and 24 with the cutt;ng rolLers 17 and 18 are displaced by two positioning cylin-ders 36 and 37 which are fixed on the centre strut 11 and are connected by their moveable part 38 or 39 ~o a side plate extension 40 or 41.
.L~..3~'3~t.3 _9_ The cutting device 9 is also supported on ehe rear part of the retaining frame 15 by the support 10, at least during the cutting operation, with vertical-slide guidance systems 4Z and 43 preventing the support 5 10 from coming away sideways out of the retaining frame 15. These vertical-slide guidance systems 42 and 43 each consist of two grooves 44 located in the re~aining frame 15, into each of which grooves 4~ engages a sliding ele-ment 45 fixed on the support 10~
Hydrostatic drives 46 are provided for driving cutting rollers 16, 17 and 18, which hydrostatic drives 46 are arranged in axial recesses of the cutting rollersO
Whereas in the embodiment described above the cutting device 9 is vertically adjusted by a single hy-15 draulic positioning cylinder 14 ~hich engages on a centrestrut 11 by the mounting lug 12, it has proved to be expe-dient according to another advantageous embodiment of the present invention to arrange in a vertically adjust-able manner the cutting unit consisting of three cutting 20 rollers by two hydraulic positionin3 cylinders ~hich are arranged next to one another as viewed in the direction of travel.
To prevent lateral swinging out, only one vertical-sl;de guidance system is expediently provided in 25 this embodimen~. A lateral inclination of the cutting-roller unit can then be achieved by different pressures being applied to the t~o positioning cylinders, by means of which cutting-roller unit cutting off to varying depths becomes possibleO
Claims (14)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. Machine for cutting off or planing off road sur-faces, having a chassis with an independent drive motor, a steerable wheeled and/or tracked running mechanism and a cutting or planing device which is fixed in a vertically adjustable manner to the chassis, which cutting or planing device contains at least one planing or cutting tool, characterised in that the planing or cutting de-vice comprises at least two planing or cutting tools arranged one behind the other in the direc-tion of travel, of which planing or cutting tools at least one is designed in such a way that it can be displaced across the direction of travel.
2. Machine according to Claim 1, characterised in that an axially fixed planing or cutting tool is available which extends at least over an essen-tial part of the track width of the wheeled and/or tracked running mechanism and which is arranged in front of the displaceable planing or cutting tool(s) as viewed in the direction of travel.
3. Machine according to Claim 1, characterised in that an axially fixed planing or cutting tool is available which extends at least over an essential part of the track width of the wheeled and/or tracked running mechanism and which is arranged behind the displaceable planing or cutting tool(s) as viewed in the direction of travel.
4. Machine according to one of Claims 1 to 3, characterised in that a displaceable planing or cutting tool is available which extends over an essential part of the track width of the wheeled and/or tracked running mechanism.
5. Machine according to Claim 1, characterised in that a displaceable planing or cutting tool is available which extends over approximately half of or less than half of the track width of the wheeled and/or tracked running mechanism.
6. Machine according to Claim 5, characterised in that the displaceable planing or cutting tool is arranged in the righthand area of the chassis as viewed in the direction of travel.
7. Machine according to Claim 1, characterised in that two displaceable planing or cutting tools are available which are arranged in an axially aligned manner next to one another.
8. Machine according to Claim 7, characterised in that the width of each of the two planing or cutting tools is essentially the same size and the width is selected in such a way that, when the planing or cutting tools are retracted, the overall clea-rance width of the two planing or cutting tools is at the most equal to the clearance width of the fixed planing or cutting tool.
9. Machine according to one of Claims 1 to 3, characterised in that the axially fixed planing or cutting tool on the one hand and the displa-ceable cutting tool(s) on the other hand are ver-tically adjustable relative to one another.
10. Machine according to Claim 1, characterised in that the axially fixed planing or cutting tool and each displaceable planing or cutting tool are combined in a common holder which is fixed in a vertically adjustable manner to the chassis.
11. Machine according to Claim 10, with an axially fixed planing or cutting tool which, in the di-rection of travel, is arranged behind the dis-placeable planing or cutting tool(s), characte-rised in that a boxlike holding fixture is allo-cated to each planing or cutting tool, in which holding fixture the planing or cutting tool is mounted, that the holding fixture allocated to the axially fixed planing or cutting tool is rigidly fixed to a support and the holding fix-tures allocated to the displaceable planing or cutting tools are displaceably fixed along a longitudinal axis to the support in such a way that the moveable holding fixtures, at their rear sides, sit against the rigidly fixed holding fix-ture, and that the rigidly fixed holding fixture, on its side facing away from the other holding fixtures, supports one part of a vertical-slide guidance system, the other part of which is ri-gidly connected to the chassis.
12. Machine according to Claim 11, characterised in that the support, at its end supporting the mo-veable holding fixtures, ist connected to the chassis by a vertical guide.
13. Machine according to Claim 11 or 12, characteri-sed in that the sides of the moveable holding fix-tures which sit against the rigidly fixed holding fixture are designed as baffle plates which transport the cut off or planed off material towards the track centre of the running mecha-nism.
14. Machine according to one of Claims 1 to 3 with cutting tools, characterised in that each cut-ting tool is designed as a cutting roller, each of which is coupled to a hydrostatic drive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000489825A CA1234975A (en) | 1985-08-30 | 1985-08-30 | Machine for cutting off or planing off road surfaces |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000489825A CA1234975A (en) | 1985-08-30 | 1985-08-30 | Machine for cutting off or planing off road surfaces |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1234975A true CA1234975A (en) | 1988-04-12 |
Family
ID=4131292
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000489825A Expired CA1234975A (en) | 1985-08-30 | 1985-08-30 | Machine for cutting off or planing off road surfaces |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1234975A (en) |
-
1985
- 1985-08-30 CA CA000489825A patent/CA1234975A/en not_active Expired
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |