Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B66—HOISTING; LIFTING; HAULING
  • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
  • B66C9/00—Travelling gear incorporated in or fitted to trolleys or cranes
  • B66C9/08—Runners; Runner bearings
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
  • B60B33/00—Castors in general; Anti-clogging castors
  • B60B33/0002—Castors in general; Anti-clogging castors assembling to the object, e.g. furniture
  • B60B33/0015—Castors in general; Anti-clogging castors assembling to the object, e.g. furniture characterised by adaptations made to castor
  • B60B33/0018—Castors in general; Anti-clogging castors assembling to the object, e.g. furniture characterised by adaptations made to castor in the form of a flat mounting plate
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
  • B60B33/00—Castors in general; Anti-clogging castors
  • B60B33/0002—Castors in general; Anti-clogging castors assembling to the object, e.g. furniture
  • B60B33/0015—Castors in general; Anti-clogging castors assembling to the object, e.g. furniture characterised by adaptations made to castor
  • B60B33/0021—Castors in general; Anti-clogging castors assembling to the object, e.g. furniture characterised by adaptations made to castor in the form of a mounting pin
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B66—HOISTING; LIFTING; HAULING
  • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
  • B66C9/00—Travelling gear incorporated in or fitted to trolleys or cranes
  • B66C9/16—Travelling gear incorporated in or fitted to trolleys or cranes with means for maintaining alignment between wheels and track

Definitions

• the invention relates to an arrangement according to the preamble of claim 1 and a method according to the preamble of claim 8.
• the impeller block disclosed therein has a precisely machined groove with lateral inner guide surfaces that are formed by opposite side walls of the groove that delimit the groove.
• the plate that is firmly connected to the chassis support is also machined to fit precisely and has side surfaces designed as lateral outer guide surfaces.
• the running wheel block is aligned on the chassis carrier by means of a positive connection formed between the lateral outer guide surfaces of the plate and the lateral inner guide surfaces of the groove, which also serves as a linear guide for adjusting the position of the running gear relative to the chassis carrier.
• DE 699 13 882 T2 discloses a bridge crane whose main girder and head girder are flexibly connected to one another in order to be able to move relative to one another during movements of the bridge crane, with a bolt in one slot moved.
• the present invention is based on the object of creating a possibility of reducing the effort required for the replacement and alignment of wheel blocks for machining on the wheel block and the plate.
• a chassis carrier a plate and a wheel block which is detachably fastened to the chassis carrier and comprises a housing and a running wheel which is mounted in the housing and protrudes from the housing, the plate being arranged and fixed between the chassis carrier and the wheel block is connected to the chassis support and has a base surface facing the housing and wherein the housing has a groove receiving the plate with a base surface facing the base surface and side walls delimiting the groove, the running wheel block being connected by means of a form-fitting connection between the running wheel block, in particular serving as a guide and the plate is aligned relative to the chassis beam, a reduced manufacturing effort on the plate and the wheel block is achieved in that the positive connection acting in the direction of the side walls is formed within the base area of the plate.
• the width of the groove is preferably designed to be greater than the width of the plate in such a way that there are no gaps between the side walls of the groove and the side surfaces of the plate facing them Guidance, in particular linear guidance, takes place or is possible.
• the plate preferably has a smaller thickness than the depth of the groove, so that no constraint can occur here either.
• precisely fitting machining to measure is understood to mean machining with an exact tolerance, preferably mechanical machining, in particular with the aid of a machine.
• machining with an exact tolerance, preferably mechanical machining, in particular with the aid of a machine.
• non-precise machining in which comparatively coarser contours are brought to a workpiece, in particular by means of cutting or roughing (milling)
• precise machining in particular by means of grinding or finishing (milling)
• milling milling
• the form-fitting connection in particular for forming the guide, is produced in a structurally simple manner using two pins arranged on the bottom surface of the groove and using two elongated holes introduced into the base surface of the plate.
• the form-fitting connection in particular for the formation of the guide, is produced by only one elongated hole made in the base area of the plate and two pins arranged on the base area of the groove or even just one pin.
• a different type of projection can also be formed on the bottom surface of the groove and interact in a form-fitting manner with the respective elongated hole. This also applies below if pin(s) and elongated holes are mentioned as an example.
• the pins on the bottom surface of the groove and the elongated holes in the base surface of the plate together form the positive connection between the wheel block and the plate for a relative alignment of the wheel block on the chassis support. For this, only the two pins and the two long holes have to be machined to size. This also applies correspondingly if a different number of pins or different types of projections or elongated holes, for example only one elongated hole, are provided.
• the base area of the plate and the bottom area of the groove on the running wheel block are towards one another when the running wheel block is mounted on the chassis carrier directed.
• the bottom surface of the groove is preferably arranged on an opposite side of the impeller block with respect to the impeller protruding out of the housing.
• the housing has at least one connection surface, also referred to as a head connection surface, which is directed toward the chassis support.
• the housing preferably comprises four mutually independent connection surfaces.
• the running wheel block is fastened to the chassis carrier.
• the housing is usually composed of several parts, preferably of two identical housing halves, resulting in a correspondingly symmetrical structure of the housing and, accordingly, of the impeller block.
• the pins arranged on the bottom surface of the groove are firmly connected, in particular screwed, glued and/or welded, to the impeller block, in particular by means of a non-positive and/or material connection.
• the pin can also be part of the housing, for example in that the pin is already taken into account when the housing is cast.
• the length of the pins is preferably shorter when the connection surface rests on the chassis beam than the distance between the bottom surface and a bottom of the slotted holes or, in the case of through slotted holes, with the chassis beam.
• the running wheel block and the running gear carrier are aligned relative to one another by means of the pins and the elongated holes.
• the relative orientation of the running wheel block to the running gear carrier causes in particular an alignment of the track of the running wheel with respect to the running gear carrier and/or a running wheel path on which the running wheel is moved.
• the impeller in particular is aligned with respect to its direction of movement by means of the pins and elongated holes.
• the chassis beam can be designed, for example, as a T-beam, double T-beam, box beam, L-profile beam or C-profile beam.
• Several plates and wheel blocks can be arranged on a single undercarriage carrier. In the case of two impeller blocks, these are arranged one behind the other in particular in a running direction of the impellers. Of course, it is conceivable that the impeller blocks are also arranged next to one another with respect to the running direction of the impellers. A combination of both is also possible. It goes without saying that with multiple impeller blocks, the relative orientation of each individual impeller block to Chassis carrier or the alignment of the track of the wheel relative to the chassis carrier and / or the wheel track can be done individually.
• a running wheel block that can be used as a base within the scope of the arrangement according to the invention is known, for example, from DE 102004 008 552 B3, DE 19 540 217 C1 or DE 31 34 750 C2.
• the plate is welded to the chassis support, in particular by means of plug welding.
• the plate is permanently and precisely fixed to the chassis beam. Accidental displacement of the plate, in which the plate is brought out of the position set during initial assembly, is thus avoided.
• the plate can be plug welded or other suitable welding method at only one point or position. It is of course conceivable that the plate is welded at several points or positions.
• the plate can also be connected to the chassis support by means of pins or screws in order to fix the previous alignment of the plate relative to the chassis support.
• each slot of the positive connection opposite and linear guide surfaces on which the respective pin rests.
• the linear guide surfaces run parallel to a longitudinal extent of the elongated hole.
• the tolerances for a distance between the linear guide surfaces and the tolerances for the outer diameter of the pin are designed such that there is a loose fit between them.
• the clearance fit is such that the pin rests against the linear guide surfaces.
• the linear guide thus allows the running wheel block to be displaced relative to the running gear carrier in a direction which runs parallel to the longitudinal extension of the elongated hole or to the linear guide surfaces (floating bearing), displacement in a direction which is transverse or perpendicular to the longitudinal extension of the elongated hole or to the linear guide surfaces, but not (fixed bearing).
• the position of the running wheel block relative to the running gear carrier can thus be changed or adjusted parallel to the axis of rotation of the running wheel by moving the pins along the linear guide surfaces of the elongated holes.
• a displacement of the impeller block in a direction running transversely or perpendicularly to the axis of rotation is not possible due to the bearing of the pin on the linear guide surfaces. In this way, it is achieved in particular that when the impeller block is moved, the alignment of the track is maintained.
• a first wheel block which is assigned to a first wheel track
• a second wheel block which is assigned to a second wheel track. If the first and second wheel blocks are arranged in parallel and their wheels point in the same running direction, a track width is set in particular, ie a direct distance between the first and second wheel blocks is set.
• the running wheel block is screwed to the chassis carrier in order to fix the set position relative to the chassis carrier.
• the running wheel block is fastened to the chassis support via a screw connection which comprises at least one, preferably several, screw(s).
• the impeller block can thus be assembled and disassembled again in a simple manner.
• At least one fastening bore preferably designed as a blind bore with a thread, is provided on the impeller block, in particular in its housing, in particular in the region of the respective connection surface, for the respective screw connection.
• At least one through hole is preferably provided in the chassis support.
• the at least one fastening hole on the impeller block is designed as a through hole and at least one threaded hole is provided on the chassis support instead of the at least one through hole.
• the at least one bore prefferably be designed as a through-bore on each of the wheel blocks and the running gear carrier, and for the respective screw connection of the screw connection to include at least one nut, by means of which the at least one screw inserted through the two through-holes is screwed in order to secure the wheel block to the running gear carrier to fix.
• the wheel block can be shifted relative to the running gear carrier in order to change the position of the wheel block and/or adjust the track width.
• the at least one through hole in the chassis support is designed in particular as a slot. A larger diameter of the through hole compared to the screw size is also possible. After setting the track width, the screw connection(s) can be tightened (again).
• a crane in particular an overhead traveling crane, in particular a bridge crane or a gantry crane, is improved in that this one inventive arrangement includes.
• the undercarriage can be arranged, for example, on a bridge of the overhead crane or a support of the gantry crane and/or a crane trolley of the overhead crane or gantry crane.
• the running wheel block comprising a housing and a running wheel mounted in the housing and protruding out of the housing, a plate with a base area directed towards the housing being arranged between the running gear carrier and the running wheel block and wherein the housing is positioned relative to the plate such that a groove of the housing having a bottom surface facing the base and side walls defining the groove receives the plate, the wheel block then being aligned relative to the undercarriage beam and releasably secured thereto while between the wheel block and the plate is a form-fitting connection is made, after relative alignment of the impeller block to the chassis beam, the plate is firmly connected to the chassis beam, a reduced manufacturing effort on the plate and the impeller block achieved in that the in dir ung of the side walls acting positive connection is made within the base of the plate.
• the form-fitting connection between the impeller block and the plate is produced using two pins arranged on the bottom surface of the groove and using two elongated holes introduced into the base surface of the plate.
• the wheel block is initially aligned together with the plate on the chassis support during initial assembly, with the positive connection between the wheel block and the plate acting in the direction of the side walls of the groove being arranged within the base area of the plate, for which purpose the pins of the wheel block are preferably used are arranged in the elongated holes of the plate and rest on linear guide surfaces of the elongated hole.
• the wheel block is pivoted about an imaginary vertical axis until the wheel can run straight ahead on a wheel track in its running direction. With this orientation, the wheel block is screwed loosely to the chassis carrier. After alignment, the wheel block is firmly screwed to the chassis carrier.
• the plate is then fixed permanently and immovably on the chassis support, for example by means of plug welding or another suitable welding process. Alternatively, pinning or screwing is also possible to fix the plate to the chassis beam.
• initial assembly is understood to mean an assembly in which an arrangement according to the invention with the plate is produced for the first time. This can be the case, for example, when a new chassis is being built or as part of maintenance. If the wheel block is replaced or the existing wheel block is reassembled or a new wheel block is installed, the plate does not have to be connected to the chassis support. Rather, the relative alignment that has already been set can be adopted immediately and the adjustment of the track width that is still required can be easily achieved by laterally shifting the wheel block.
• the plate is advantageously welded to the chassis support, in particular by means of hole spot welding.
• the wheel block is screwed to the chassis support.
• Figure 1 is a schematic perspective view of an overhead crane
• FIG. 2 shows a schematic perspective view of an arrangement with a chassis carrier, a plate and a wheel block
• FIG. 2a shows a further schematic perspective view of a detail of the arrangement from FIG. 2,
• FIG. 3 shows a schematic perspective and detail view of a housing half of an impeller block
• FIG. 4 shows a schematic perspective view of a plate
• FIG. 5 shows a schematic perspective view of an impeller block with a plate placed in the groove
• FIG. 5a shows a further schematic perspective view of a detail of the arrangement from FIG.
• FIG. 1 shows a schematic perspective view of an overhead traveling crane 1, which is designed here by way of example as a so-called two-girder overhead traveling crane.
• the traveling crane 1 can be moved essentially horizontally in a crane travel direction K on a rail track with two rails (not shown) which are parallel to one another and spaced apart from one another and are also referred to as running wheel tracks.
• the traveling crane 1 comprises two box girders 2 running parallel and at a distance from one another, which, for example, form a horizontal crane girder and serve as a travel path for a trolley 3 with a hoist 4 .
• the trolley 3 moves on the box girders 2 in a horizontal trolley travel direction k, which is aligned at right angles to the crane travel direction K.
• the box girders 2 also extend in the trolley travel direction k.
• only a single box girder or double-T profile in the manner of a single-girder bridge crane can also be provided.
• the trolley 3 then moves, for example, on a bottom flange of the box girder. Truss girders can be used instead of box girders to form the respective crane girder.
• the box girders 2 rest at their respective, opposite ends on running gear girders 5 running transversely thereto and thus in the direction K of the crane.
• a wheel block 6 arranged, which is optionally driven by an electric motor.
• the running wheel blocks 6 can each be moved with their running wheel 11 (see FIG. 2) on the rails, not shown, in the direction K of the crane.
• the running wheel blocks 6 can also be used on other crane types.
• the wheel path center lines 11a are indicated only schematically by dot-dash lines.
• the position of the running wheel block 6 relative to the running gear carrier 5 can be adjusted in the adjustment directions 23 . When moving the impeller block 6 in the adjustment directions 23, an alignment of the track is maintained.
• the track width S is determined by a direct distance between the running wheel paths running parallel in the crane travel direction K of the traveling crane 1, in particular their running wheel path center lines 11a, of two wheel blocks 6.
• a first wheel block 6i can be displaced relative to a second wheel block 6ii arranged parallel to the first wheel block 6i in order to set the track width S.
• the first running wheel block 6i is assigned to a first running wheel track and the second running wheel block 6ii to a second running wheel track parallel to the first running wheel track, with the running wheel 11 of the first running wheel block 6i and the running wheel 11 of the second running wheel block 6ii pointing in the same running direction.
• FIG. 2 shows a schematic perspective view of an arrangement with a chassis support 5, a plate 14 and a running wheel block 6.
• the chassis support 5 has a fastening plate 16, which is shown broken to better illustrate the arrangement according to the invention.
• the running wheel block 6 is arranged on the running gear carrier 5 .
• the impeller block 6 has a box-shaped housing 7 which is open on its underside 13 and is composed of two identical housing halves, for example.
• a running wheel 11 is mounted in the housing 7 and rotates with a hub 12 about a horizontal axis of rotation D running transversely to the direction of travel of the crane K and protrudes downwards towards the underside 13 , partially out of the housing 7 . In the usual installation position, the axis of rotation D is aligned horizontally.
• the hub 12 becomes lateral each held in a slide and / or roller bearing, which are used in the housing 7.
• the fastening plate 16 has, for example, four through-holes 17 for the detachable fastening of the impeller block 6 .
• the impeller block 6 comprises, for example, four fastening holes 18 (see FIG. 3), so that when the through-holes 17 and the fastening holes 18 overlap, the impeller block 6 can be detachably fastened to the chassis support 5 .
• screws 19 are pushed through the through holes 17 and screwed into the fastening holes 18, which are designed as threaded holes, for example.
• the mounting plate 16 has at least one bore 15, in the present example two bores 15, for performing a spot weld, which serve to fasten the plate 14 to the mounting plate 16 via the spot weld.
• the running wheel block 6 and thus also the track of the running wheel 11 are aligned in the crane travel direction K, so that the running wheel 11 can roll along the rails of the traveling crane 1 with little wear.
• the running wheel block 6 is pivoted about an imaginary vertical axis relative to the chassis carrier. After the wheel block 6 has been aligned and the wheel block 6 has been screwed tight, the plate 14 is then attached to the mounting plate 16 of the chassis support 5 in the bores
• the axis of rotation D of the impeller 11 runs in particular parallel to the linear guide surfaces 21a of the elongated hole 21 (see FIG. 4).
• the position of the running wheel block 6 relative to the running gear carrier 5 can thus be changed or adjusted parallel to the axis of rotation D of the running wheel 11 by moving the pins 20 along the linear guide surfaces 21a of the elongated holes 21 .
• a displacement of the impeller block 6 in a direction running transversely or perpendicularly to the axis of rotation D is not possible due to the bearing of the pin 20 on the linear guide surfaces 21a.
• Figure 2a shows a further schematic perspective and detail view of the arrangement from Figure 2.
• FIG. 3 shows a schematic perspective view of a detail of one housing half of a correspondingly symmetrically constructed impeller block 6.
• the groove 10 is introduced on an upper side of the housing 7 opposite the underside 13 (see FIGS. 2 and 5).
• the groove 10 extends over the entire width of the housing half shown and thus also the housing 7.
• This direction of extension runs in the trolley travel direction k and thus transversely to the crane travel direction K and transversely to the travel direction of the running wheel 11.
• the groove 10 is seen in the crane travel direction K at the front and rear each bounded by a side wall 10b, which does not have to be machined to size within the meaning of the invention.
• the plate 14 (see also FIG.
• connection surfaces 8 which are independent of one another and are located in a region of the housing 7 outside of the groove 10 . Two connection surfaces 8 are provided for each housing half. When mounting the wheel block 6 on the chassis support 5, the connection surfaces 8 come to rest on the fastening plate 16.
• connection surfaces 8 there is a fastening bore 18, only one of which is shown in FIG.
• the running wheel block 6 is detachably fastened to the chassis support 5 via the four fastening bores 18 in that the screws 19 are screwed into the fastening bores 18 after being pushed through the through bores 17 in the fastening plate 16 (compare FIG. 2).
• Figure 4 shows a schematic perspective view of a plate 14 with two elongated holes 21 formed in the base 14a.
• the plate 14 has peripheral side surfaces 14b and the base 14a of the plate 14 delimiting side surfaces which do not have to be machined to size within the meaning of the invention .
• the elongated holes 21 each have two guide surfaces 21a which, on the other hand, are machined to fit exactly to size in order to form a linear guide for the impeller block 6 in each case with a pin 20 .
• Figure 5 shows a schematic perspective view of an impeller block 6 with plate 14 placed in groove 10.
• Figure 5a shows another schematic perspective and fragmentary view of Figure 5. It is easy to see that the width of the groove 10 and the width of the plate 14 are formed such that the side walls 10b of the groove 10 and the side surfaces 14b of the plate 14 are spaced from each other. In contrast, the pins 20 bear against the guide surfaces 21a of the elongated holes 21 . For this purpose, the pins 20 and the elongated holes 21 are machined to fit so precisely that the two guide surfaces of an elongated hole and the associated pin are form-fitting and a precise fit to one another, in particular in the direction of the side walls 10b. Reference List

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Carriers, Traveling Bodies, And Overhead Traveling Cranes (AREA)

Applications Claiming Priority (2)

Publications (1)

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Family Applications (1)

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Family Cites Families (13)

• 2020
  • 2020-11-05 DE DE102020129194.9A patent/DE102020129194B4/de active Active
• 2021
  • 2021-11-03 US US18/245,481 patent/US11891280B2/en active Active
  • 2021-11-03 CN CN202180053980.XA patent/CN116034084B/zh active Active
  • 2021-11-03 WO PCT/EP2021/080439 patent/WO2022096477A1/de active Application Filing
  • 2021-11-03 EP EP21805919.4A patent/EP4192777A1/de active Pending

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