US3225849A - Tilting suspension for crawler frames - Google Patents
Tilting suspension for crawler frames Download PDFInfo
- Publication number
- US3225849A US3225849A US346500A US34650064A US3225849A US 3225849 A US3225849 A US 3225849A US 346500 A US346500 A US 346500A US 34650064 A US34650064 A US 34650064A US 3225849 A US3225849 A US 3225849A
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- Prior art keywords
- crawler
- axis
- support members
- frame
- assemblies
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- 239000000725 suspension Substances 0.000 title description 7
- VJYFKVYYMZPMAB-UHFFFAOYSA-N ethoprophos Chemical compound CCCSP(=O)(OCC)SCCC VJYFKVYYMZPMAB-UHFFFAOYSA-N 0.000 claims 1
- 230000000712 assembly Effects 0.000 description 12
- 238000000429 assembly Methods 0.000 description 12
- 239000000543 intermediate Substances 0.000 description 12
- 238000005553 drilling Methods 0.000 description 5
- 230000001788 irregular Effects 0.000 description 5
- 239000011435 rock Substances 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 241001502381 Budorcas taxicolor Species 0.000 description 1
- 241001249696 Senna alexandrina Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/02—Drilling rigs characterised by means for land transport with their own drive, e.g. skid mounting or wheel mounting
- E21B7/024—Drilling rigs characterised by means for land transport with their own drive, e.g. skid mounting or wheel mounting having means for adapting to inclined terrain; having means for stabilizing the vehicle while drilling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D55/00—Endless track vehicles
- B62D55/08—Endless track units; Parts thereof
- B62D55/084—Endless-track units or carriages mounted separably, adjustably or extensibly on vehicles, e.g. portable track units
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D55/00—Endless track vehicles
- B62D55/08—Endless track units; Parts thereof
- B62D55/084—Endless-track units or carriages mounted separably, adjustably or extensibly on vehicles, e.g. portable track units
- B62D55/0842—Tracked vehicle with track carriages suspended on three points, e.g. by an equaliser bar
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D55/00—Endless track vehicles
- B62D55/08—Endless track units; Parts thereof
- B62D55/104—Suspension devices for wheels, rollers, bogies or frames
- B62D55/116—Attitude or position control of chassis by action on suspension, e.g. to compensate for a slope
-
- 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
- E02F9/02—Travelling-gear, e.g. associated with slewing gears
- E02F9/024—Travelling-gear, e.g. associated with slewing gears with laterally or vertically adjustable wheels or tracks
-
- 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
- E02F9/02—Travelling-gear, e.g. associated with slewing gears
- E02F9/028—Travelling-gear, e.g. associated with slewing gears with arrangements for levelling the machine
Definitions
- This invention relates to a drilling device and more particularly to a crawler mounted mobile drill carriage having a novel frame suspension which provides for relative tilting movement of the crawlers with respect to each other when traveling over an irregular surface.
- the drilling device of the present invention contemplates the use of a similar crossbar for supporting the drill support frame, which crossbar, by the use of spherical bearings eliminates the need for universally mounted links.
- the novel structure of this invention is stronger and more rigid than that of the prior art structures and can be constructed more economically since fewer pieces of material are necessary in the construction of the device of the present invention resulting in economy in manufacture and assembly.
- FIGURE 1 is a side elevational view of a mobile drill mounted on a drill carriage constructed according to the principles of this invention
- FIGURE 2 is an enlarged, fragmentary, sectional view taken substantially on the line 22 of FIGURE 3;
- FIGURE 3 is a top plan view of the mobile drill carriage shown in FIGURE 1;
- FIGURE 4 is a sectional view taken on the line 44 of FIGURE 3.
- FIGURE 5 is a front elevational view of the mobile drill carriage shown in FIGURE 3.
- FIG- URE 1 a drilling device comprising an elongated drill frame 12 having mounted thereon and feedable therealong a drill motor 14 provided with an elongated drill rod and drill bit 16 for producing bores in rock strata in a manner well known in the art.
- the drill frame 12 is pivotably and longitudinally adjustably mounted on a suitable drill support boom 18 pivotably adjustably mounted on a support member 20 which is in turn mounted on and supported by a main frame 22 (see FIGURES 3 and 4) hereinafter more fully described.
- crawler mechanisms 24 and 26 of a well known type are held in laterally spaced parallelism by the main frame 22 and associated members as hereinafter more fully set forth.
- the crawlers 24 and 26 are suitably powered by suitable motors 28 suitably connected through control means to a device providing energy such as electrical current or compressed air for operation of the crawlers 24 and 26 in a well known manner.
- Each of the crawlers 24 and 26 comprises an endless chain 30 trained about and driven by a drive sprocket 32 powered by one of the motors 28 and rotatable about a common centerline A-A (see FIG. 3) by suitable speed reduction gearing interposed between the motor 28 and the respective sprocket 32.
- An idler sprocket 34 (see FIG. 1) as well as the drive sprocket 32 is mounted on a crawler frame 36 for each of the crawlers 24 and 26 with each of the crawler frames 36 being provided with suitable guides and rollers for control of the orbiting of the chain 30 thereabout.
- the end of the machine shown to the left in FIGURES 1 and 4 will be hereinafter referred to as the forward end and the longitudianl dimension of the machine will be that taken along the line 4-4 of FIGURE 3 with the idler sprocket 34 at the forward end of the caterpillar 24 and the drive sprocket 32 at the rearward end of the crawler 24.
- the main frame 22 comprises an elongated heavy walled steel tube of rectangular cross section extending transversely across the drilling device 10 and located forwardly and upwardly from the axis AA of the drive sprockets 32.
- the ends of the tube 49 are rigidly secured to a pair of rearwardly extending bracket plates 42 pivotably mounted on the crawler frames 36 respectively for limited rotation about the axis AA with the motors 28 suitably mounted thereon and located rearwardly of the axis AA.
- a central bracket 44 extends rearwardly and downwardly a suflicient distance to encompass a bore 46 coaxial with the axis A-A.
- An elongated cylindrical pin 4-8 is rigidly secured in the bore 46 and pivotably received in a journal end 50 of a support beam 52 which extends forwardly and transversely from the central bracket 44 to an intermediate portion of the crawler frame 36 of the righthand crawler 24.
- a lefthand support beam 54 having a journal end 56 pivotably receiving an end portion of the pin 48 extends obliquely forwardly from the central bracket 44 to a central portion of the crawler frame 36 of the lefthand crawler 26.
- an elongated crossbar member 53 Extending transversely of the machine from an intermediate portion of the support beam 52 to an intermediate portion of the support beam 54 is an elongated crossbar member 53 having an axis parallel to the axis A-A and in a common horizontal plane therewith (see FIG. 3).
- the crossbar member 56 as shown comprises an elongated main portion of rectangular cross section with a stepped cylindrical element 58 rigidly secured in each end thereof and extending longitudinally outwardly therefrom with the two end elements 58 being coaxial with each other and with the main portion of the crossbar 56 (see FIG. 2).
- a reduced diameter portion 59 of the cylindrical element 58 at each end of the crossbar 56 is fitted to the inner diameter of a spherical bearing 60 of a type well known in the art and characterized as a selfaligning two-piece bearing having a partially spherical inner element 61 mounted in a cylindrical outer element 62 having a partially spherical inner surface mating with the outer surface of the inner element 61 so that the inner element 61 is universally pivotable within a limited range of angles within the outer element 62.
- the inner element 61 is secured on the reduced diameter portion 59 in any suitable manner as by a washer 64 and a nut 65 as shown.
- the outer element 62 is slidably mounted in an axial bore 66 of a generally cylindrical bearing bracket 68 provided with an integral oblique base 79 rigidly removably secured to an intermediate portion of one of the beams 54 or 52.
- the crossbar 56 is universally pivotably connected between the intermediate sections of the beams 52 and 54 with the slidable relationship of the outer element 62 to the bore 66 providing for a change in length made necessary whenever the crawler 24 rotates about the axis A-A in relation to the crawler 26, which rotation takes place to a greater or less degree almost continually as the device It traverses irregular ground or other supporting surfaces.
- a transverse bore 73 through the center of the crossbar 56 slidably receives an elongated cylindrical pin 72 having an axis coinciding with the centerline of the machine (line 44) in the horizontal plane containing the axis A-A when the machine is standing on a fiat, level surface.
- the pin 72 is rigidly secured to the lower end of a bracket plate 74 rigidly secured to and down- Wardly depending from the lower front central portion of the tube 40.
- the bracket plate 74 and the pin 72 provide a third support point, in conjunction with the brackets 4-2, for the main frame 22 so that the frame 22 is rigidly supported on a three point suspension while the crawlers 24 and 26 are free to rotate with respect to each other about the axis AA within limits imposed by the structural clearance between the frame 22 and the beams 52 and 54.
- the crawlers 24 and 26 When the drilling device 10 is operating upon an irregular surface the crawlers 24 and 26 will at times necessarily rotate about axis AA in relation to each other as for example when the forward end of the crawler 26 is raised in relation to the position of the forward end of the crawler 24 as shown in FIGURE 5 the following actions will take place: the end of the crossbar 56, nearest the crawler 26, will rise causing the crossbar to extend obliquely from one bearing bracket 68 to the other necessitating a lengthening of the connection extending therebetween. With a given size of machine this lengthening amounts to approximately .22" for an angle of 7 /2 as measured between the horizontal plane and the centerline of the crossbar 56.
- This amount of lengthing is accomplished by movement of the outer elements 62 within the bores 66 a distance of .11" towards the centerline, as measured within each bore 66. While the above described action is takin place the pin '72 has been carried upwardly by an amount equal to one-half the rise of the bracket 6d associated with the crawler 26 and consequently the forward edge of the main frame 22 has also been carried upwardly by one-half the amount of the rise of the aforementioned bracket 63. Thus it is seen that the crawlers 24 and 26 are free to rotate about the axis AA with respect to each other but that rigid three point support of the main frame 22 remains in effect although a slight tipping of the main frame 22 does take place.
- the structure of the present invention is very rigid in that the crossbar is not free to move forwardly and backwardly relative to the crawler frames but is only free to rotate about a fixed centerline since both ends of the crossbar although pivotable with relation to the support members and free to move transversely of the machine, cannot move forwardly or rearwardly with respect to the support members.
- the structure of the present invention employs only two relative large spherical bearings having an outside diameter of approximately two inches.
- crossbar has been described as being mounted in spherical self-aligning bearings, other types of ball and socket joints having the required degree of angular and longitudinal freedom with respect to the crossbar 56 can be employed in place of the spherical bearings 60.
- a mobile rock drill support comprising: two parallel crawler assemblies having a crawler frame within each of said assemblies; rearward portions of said assemblies having a common transverse axis, said assemblies being pivotable about said axis; a transverse frame pivotable about said axis and pivotably secured to said crawler frames; two elongated rigid support members, rigidly secured to and extending rearwardly and 1nwardly from intermediate portions of said crawler frames, respectively, said support members being pivotably secured to each other along said axis; spherical bearings transversely slidably mounted on intermediate portions of said support members, respectively; an elongated rigid crossbar member extending between and universally pivotably secured by said spherical bearings; said crossbar member having a central transverse bore therethrough and being pivotably connected to said transverse frame through said bore, said bore having an axis normal to said transverse axis and said crossbar member being slidable along the axis of said bore to permit said crawler frames to rotate with respect to each other within
- a mobile rock drill support comprising: two parallel crawler assemblies; a crawler frame within each of said assemblies; rearward portions of said assemblies having a common transverse axis, said assemblies being pivotable about said axis; a transverse frame pivotable about said axis, pivotably secured to said crawler frames; two elongated rigid support members, rigidly secured to and extending rearwardly and inwardly from intermediate portions of said crawler frames, respectively, said support members being pivotably secured to each other; spherical bearings mounted on intermediate portions of said support members, respectively, said bearings being slidable transversely of said support members; an elongated rigid crossbar member extending between and universally pivotably secured to said spherical bearings; said crossbar member having a central transverse bore therethrogh; pivot means rigidly secured to said transverse frame, said bore and said pivot means having a common axis normal to said transverse axis and said bore slidably receiving said pivot means to permit said crawler frames to rotate with respect to each other within
- a mobile rock drill support comprising: two parallel crawler assemblies; a crawler frame within each of said assemblies; rearward portions of said assemblies having a common transverse axis, said assemblies being pivotable about said axis; a transverse frame pivotable about said axis, pivotably secured to said crawler frames; two elongated rigid support members, rigidly secured to and extending rearwardly and inwardly from inter mediate portions of said crawler frames, respectively, said support members being pivotably secured to each other; universally pivotable bearings mounted on intermediate portions of said support members, respectively, said bearings being sl-idable transversely of said support members; an elongated rigid crossbar member extending between and fixedly secured to said universal bearings; said crossbar member having a central transverse bore therethrough; pivot means rigidly secured to said transverse frame, said bore and said pivot means having a common axis normal to said transverse axis and said bore slidably receiving said pivot means to permit said crawler frames to rotate with respect to each other within the limits
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- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Geology (AREA)
- Fluid Mechanics (AREA)
- Geochemistry & Mineralogy (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Physics & Mathematics (AREA)
- Earth Drilling (AREA)
- Support Of The Bearing (AREA)
- Drilling And Boring (AREA)
Description
Dec. 28, 1965 G. N. LA CASSE 3,225,349
TILTING SUSPENSION FOR CRAWLER FRAMES Filed Feb. 21, 1964 2. Sheets-Sheet 1 Fig.2.
,2 i Flg. I.
24 INVENTOR 3O 34 36 32 GEORGENLACASSE his ATTORNEY Dec. 28, 1965 G. N. LA CA SSE 3,225,849
TILTING SUSPENSION FOR CRAWLER FRAMES Filed Feb. 21, 1964 2 Sheets-Sheet z m w M" 34 A Im- 24 Fig.5.
3o 40 J ,E T f [6 (o o o 0 3s 32 J E 44 G 73 24 o o INVENTOR.
This invention relates to a drilling device and more particularly to a crawler mounted mobile drill carriage having a novel frame suspension which provides for relative tilting movement of the crawlers with respect to each other when traveling over an irregular surface.
The drilling device of the present invention contemplates the use of a similar crossbar for supporting the drill support frame, which crossbar, by the use of spherical bearings eliminates the need for universally mounted links. The novel structure of this invention is stronger and more rigid than that of the prior art structures and can be constructed more economically since fewer pieces of material are necessary in the construction of the device of the present invention resulting in economy in manufacture and assembly.
It is-therefore an object of this invention to provide a new and improved mobile drill carriage.
It is another object of this invention to provide a new and improved drill carriage for travelling over an irregular surface.
It is a further object of this invention to provide a new and improved drill carriage having a drill support frame supported by a crossbar, which crossbar is connected to a pair of crawler frames by simple ball joint connections.
It is still another object of this invention to provide a new and improved crawler mounted drill carriage having a novel frame suspension which provides for relative tilting movement of the crawlers with respect to each other when travelling over an irregular surface, which frame suspension comprises a minimum of moving parts.
These and other objects and advantages of this invention will more fully appear upon consideration of the following description and drawings in which:
FIGURE 1 is a side elevational view of a mobile drill mounted on a drill carriage constructed according to the principles of this invention;
FIGURE 2 is an enlarged, fragmentary, sectional view taken substantially on the line 22 of FIGURE 3;
FIGURE 3 is a top plan view of the mobile drill carriage shown in FIGURE 1;
FIGURE 4 is a sectional view taken on the line 44 of FIGURE 3; and
FIGURE 5 is a front elevational view of the mobile drill carriage shown in FIGURE 3.
Referring now to the drawings, there is shown in FIG- URE 1 a drilling device comprising an elongated drill frame 12 having mounted thereon and feedable therealong a drill motor 14 provided with an elongated drill rod and drill bit 16 for producing bores in rock strata in a manner well known in the art. The drill frame 12 is pivotably and longitudinally adjustably mounted on a suitable drill support boom 18 pivotably adjustably mounted on a support member 20 which is in turn mounted on and supported by a main frame 22 (see FIGURES 3 and 4) hereinafter more fully described.
Two crawler mechanisms 24 and 26 of a well known type are held in laterally spaced parallelism by the main frame 22 and associated members as hereinafter more fully set forth. The crawlers 24 and 26 are suitably powered by suitable motors 28 suitably connected through control means to a device providing energy such as electrical current or compressed air for operation of the crawlers 24 and 26 in a well known manner.
Each of the crawlers 24 and 26 comprises an endless chain 30 trained about and driven by a drive sprocket 32 powered by one of the motors 28 and rotatable about a common centerline A-A (see FIG. 3) by suitable speed reduction gearing interposed between the motor 28 and the respective sprocket 32. An idler sprocket 34 (see FIG. 1) as well as the drive sprocket 32 is mounted on a crawler frame 36 for each of the crawlers 24 and 26 with each of the crawler frames 36 being provided with suitable guides and rollers for control of the orbiting of the chain 30 thereabout. For purposes of explanation the end of the machine shown to the left in FIGURES 1 and 4 will be hereinafter referred to as the forward end and the longitudianl dimension of the machine will be that taken along the line 4-4 of FIGURE 3 with the idler sprocket 34 at the forward end of the caterpillar 24 and the drive sprocket 32 at the rearward end of the crawler 24.
The main frame 22 comprises an elongated heavy walled steel tube of rectangular cross section extending transversely across the drilling device 10 and located forwardly and upwardly from the axis AA of the drive sprockets 32. The ends of the tube 49 are rigidly secured to a pair of rearwardly extending bracket plates 42 pivotably mounted on the crawler frames 36 respectively for limited rotation about the axis AA with the motors 28 suitably mounted thereon and located rearwardly of the axis AA. From an intermediate portion of the tube 40 a central bracket 44 extends rearwardly and downwardly a suflicient distance to encompass a bore 46 coaxial with the axis A-A. An elongated cylindrical pin 4-8 is rigidly secured in the bore 46 and pivotably received in a journal end 50 of a support beam 52 which extends forwardly and transversely from the central bracket 44 to an intermediate portion of the crawler frame 36 of the righthand crawler 24. In like manner a lefthand support beam 54 having a journal end 56 pivotably receiving an end portion of the pin 48 extends obliquely forwardly from the central bracket 44 to a central portion of the crawler frame 36 of the lefthand crawler 26.
Extending transversely of the machine from an intermediate portion of the support beam 52 to an intermediate portion of the support beam 54 is an elongated crossbar member 53 having an axis parallel to the axis A-A and in a common horizontal plane therewith (see FIG. 3).
The crossbar member 56 as shown comprises an elongated main portion of rectangular cross section with a stepped cylindrical element 58 rigidly secured in each end thereof and extending longitudinally outwardly therefrom with the two end elements 58 being coaxial with each other and with the main portion of the crossbar 56 (see FIG. 2). A reduced diameter portion 59 of the cylindrical element 58 at each end of the crossbar 56 is fitted to the inner diameter of a spherical bearing 60 of a type well known in the art and characterized as a selfaligning two-piece bearing having a partially spherical inner element 61 mounted in a cylindrical outer element 62 having a partially spherical inner surface mating with the outer surface of the inner element 61 so that the inner element 61 is universally pivotable within a limited range of angles within the outer element 62. The inner element 61 is secured on the reduced diameter portion 59 in any suitable manner as by a washer 64 and a nut 65 as shown. The outer element 62 is slidably mounted in an axial bore 66 of a generally cylindrical bearing bracket 68 provided with an integral oblique base 79 rigidly removably secured to an intermediate portion of one of the beams 54 or 52. Thus the crossbar 56 is universally pivotably connected between the intermediate sections of the beams 52 and 54 with the slidable relationship of the outer element 62 to the bore 66 providing for a change in length made necessary whenever the crawler 24 rotates about the axis A-A in relation to the crawler 26, which rotation takes place to a greater or less degree almost continually as the device It traverses irregular ground or other supporting surfaces.
A transverse bore 73 through the center of the crossbar 56 slidably receives an elongated cylindrical pin 72 having an axis coinciding with the centerline of the machine (line 44) in the horizontal plane containing the axis A-A when the machine is standing on a fiat, level surface. The pin 72 is rigidly secured to the lower end of a bracket plate 74 rigidly secured to and down- Wardly depending from the lower front central portion of the tube 40. The bracket plate 74 and the pin 72 provide a third support point, in conjunction with the brackets 4-2, for the main frame 22 so that the frame 22 is rigidly supported on a three point suspension while the crawlers 24 and 26 are free to rotate with respect to each other about the axis AA within limits imposed by the structural clearance between the frame 22 and the beams 52 and 54. When the drilling device 10 is operating upon an irregular surface the crawlers 24 and 26 will at times necessarily rotate about axis AA in relation to each other as for example when the forward end of the crawler 26 is raised in relation to the position of the forward end of the crawler 24 as shown in FIGURE 5 the following actions will take place: the end of the crossbar 56, nearest the crawler 26, will rise causing the crossbar to extend obliquely from one bearing bracket 68 to the other necessitating a lengthening of the connection extending therebetween. With a given size of machine this lengthening amounts to approximately .22" for an angle of 7 /2 as measured between the horizontal plane and the centerline of the crossbar 56. This amount of lengthing is accomplished by movement of the outer elements 62 within the bores 66 a distance of .11" towards the centerline, as measured within each bore 66. While the above described action is takin place the pin '72 has been carried upwardly by an amount equal to one-half the rise of the bracket 6d associated with the crawler 26 and consequently the forward edge of the main frame 22 has also been carried upwardly by one-half the amount of the rise of the aforementioned bracket 63. Thus it is seen that the crawlers 24 and 26 are free to rotate about the axis AA with respect to each other but that rigid three point support of the main frame 22 remains in effect although a slight tipping of the main frame 22 does take place. It is to be realized that as the main frame 22 rotates about the axis AA there is a slight change in the distance from the axis A--A to the center of cross bar 56 which change in distance is accommodated by the sliding fit of the pin 72 in the transverse bore of the crossbar 56 allowing the necessary variation in length to take place without interfering with the rigidity of the assembly.
The structure of the present invention is very rigid in that the crossbar is not free to move forwardly and backwardly relative to the crawler frames but is only free to rotate about a fixed centerline since both ends of the crossbar although pivotable with relation to the support members and free to move transversely of the machine, cannot move forwardly or rearwardly with respect to the support members. The structure of the present invention employs only two relative large spherical bearings having an outside diameter of approximately two inches.
It is to be realized that although the crossbar has been described as being mounted in spherical self-aligning bearings, other types of ball and socket joints having the required degree of angular and longitudinal freedom with respect to the crossbar 56 can be employed in place of the spherical bearings 60.
It is to be realized that a preferred embodiment of this invention having been described, other embodiments of these principles are possible and envisioned as being within the scope of this invention. It is therefore respectfully requested that this invention be interpreted as broadly as possible and be limited only by the prior art.
I claim:
l. A mobile rock drill support comprising: two parallel crawler assemblies having a crawler frame within each of said assemblies; rearward portions of said assemblies having a common transverse axis, said assemblies being pivotable about said axis; a transverse frame pivotable about said axis and pivotably secured to said crawler frames; two elongated rigid support members, rigidly secured to and extending rearwardly and 1nwardly from intermediate portions of said crawler frames, respectively, said support members being pivotably secured to each other along said axis; spherical bearings transversely slidably mounted on intermediate portions of said support members, respectively; an elongated rigid crossbar member extending between and universally pivotably secured by said spherical bearings; said crossbar member having a central transverse bore therethrough and being pivotably connected to said transverse frame through said bore, said bore having an axis normal to said transverse axis and said crossbar member being slidable along the axis of said bore to permit said crawler frames to rotate with respect to each other within the limits imposed by the clearance between said rigid frame and said support members.
2. A mobile rock drill support comprising: two parallel crawler assemblies; a crawler frame within each of said assemblies; rearward portions of said assemblies having a common transverse axis, said assemblies being pivotable about said axis; a transverse frame pivotable about said axis, pivotably secured to said crawler frames; two elongated rigid support members, rigidly secured to and extending rearwardly and inwardly from intermediate portions of said crawler frames, respectively, said support members being pivotably secured to each other; spherical bearings mounted on intermediate portions of said support members, respectively, said bearings being slidable transversely of said support members; an elongated rigid crossbar member extending between and universally pivotably secured to said spherical bearings; said crossbar member having a central transverse bore therethrogh; pivot means rigidly secured to said transverse frame, said bore and said pivot means having a common axis normal to said transverse axis and said bore slidably receiving said pivot means to permit said crawler frames to rotate with respect to each other within the limits imposed by the clearance between said rigid frame and said support members.
3. A mobile rock drill support comprising: two parallel crawler assemblies; a crawler frame within each of said assemblies; rearward portions of said assemblies having a common transverse axis, said assemblies being pivotable about said axis; a transverse frame pivotable about said axis, pivotably secured to said crawler frames; two elongated rigid support members, rigidly secured to and extending rearwardly and inwardly from inter mediate portions of said crawler frames, respectively, said support members being pivotably secured to each other; universally pivotable bearings mounted on intermediate portions of said support members, respectively, said bearings being sl-idable transversely of said support members; an elongated rigid crossbar member extending between and fixedly secured to said universal bearings; said crossbar member having a central transverse bore therethrough; pivot means rigidly secured to said transverse frame, said bore and said pivot means having a common axis normal to said transverse axis and said bore slidably receiving said pivot means to permit said crawler frames to rotate with respect to each other within the limits imposed by the clearance between said rigid frame and said support members.
References (Iitetl by the Examiner FOREIGN PATENTS 5/1920 Germany.
BENJAMIN I-IERSH, Primary Examiner.
ARTHUR L. LA POINT, Examiner.
Claims (1)
- 3. A MOBILE ROCK DRILL SUPPORT COMPRISING: TWO PARALLEL CRAWLER ASSEMBLIES; A CRAWLER FRAME WITHIN EACH OF SAID ASSEMBLIES; REARWARD PORTIONS OF SAID ASSEMBLIES HAVING A COMMON TRANSVERSE AXIS, SAID ASSEMBLIES BEING PIVOTABLE ABOUT SAID AXIS; A TRANSVERSE FRAME PIVOTABLE ABOUT SAID AXIS, PIVOTABLY SECURED TO SAID CRAWLER FRAMES; TWO ELONGATED RIGID SUPPORT MEMBERS, RIGIDLY SECURED TO AND EXTENDING REARWARDLY AND INWARDLY FROM INTERMEDIATE PORTIONS OF SAID CRAWLER FRAMES, RESPECTIVELY, SAID SUPPORT MEMBERS BEING PIVOTABLY SECURED TO EACH OTHER; UNIVERSALLY PIVOTABLE BEARINGS MOUNTED ON INTERMEDIATE PORTIONS OF SAID SUPPORT MEMBERS, RESPECTIVELY, SAID BEARINGS BEING SLIDABLY TRANSVERSELY OF SAID SUPPORT MEMBERS; AN ELONGATED RIGID CROSSBAR MEMBER EXTENDING BETWEEN AND FIXEDLY SECURED TO SAID UNIVERSAL BEARINGS; SAID CROSSBAR MEMBER HAVING A CENTRAL TRANSVERSE BORE THERETHROUGH; PIVOT MEANS RIGIDLY SECURED TO SAID TRANSVERSE FRAME, SAID BORE AND SAID PIVOT MEANS HAVING A COMMON AXIS NORMAL TO SAID TRANSVERSE AXIS AND SAID BORE SLIDABLY RECEIVING SAID PIVOT MEANS TO PERMIT SAID CRAWLER FRAMES TO ROTATE WITH RESPECT TO EACH OTHER WITHIN THE LIMITS IMPOSED BY THE CLEARANCE BETWEEN SAID RIDIG FRAME AND SAID SUPPORT MEMBERS.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US346500A US3225849A (en) | 1964-02-21 | 1964-02-21 | Tilting suspension for crawler frames |
GB5064/65A GB1036394A (en) | 1964-02-21 | 1965-02-05 | Drilling device |
FR6388A FR1425051A (en) | 1964-02-21 | 1965-02-19 | Drilling device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US346500A US3225849A (en) | 1964-02-21 | 1964-02-21 | Tilting suspension for crawler frames |
Publications (1)
Publication Number | Publication Date |
---|---|
US3225849A true US3225849A (en) | 1965-12-28 |
Family
ID=23359688
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US346500A Expired - Lifetime US3225849A (en) | 1964-02-21 | 1964-02-21 | Tilting suspension for crawler frames |
Country Status (3)
Country | Link |
---|---|
US (1) | US3225849A (en) |
FR (1) | FR1425051A (en) |
GB (1) | GB1036394A (en) |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3478832A (en) * | 1967-10-27 | 1969-11-18 | Ingersoll Rand Co | Crawler mounted rock drill |
US3980149A (en) * | 1975-05-12 | 1976-09-14 | Caterpillar Tractor Co. | Stress-relieved axle mounting for track-type vehicles |
DE2725042A1 (en) * | 1976-06-04 | 1977-12-15 | Atlas Copco Ab | Mobile drilling rig alignment system - includes winding gear and struts for raising end of vehicle alongside vertical mast |
US4086974A (en) * | 1975-10-28 | 1978-05-02 | Poclain | Chassis for vehicle |
US4181182A (en) * | 1977-06-21 | 1980-01-01 | Atlas Copco Ab | Wagon having incorporated support jacks |
EP0110175A2 (en) * | 1982-11-29 | 1984-06-13 | Deere & Company | Junction bracket between a track carriage and an equalizer bar of a tractor |
US4690231A (en) * | 1985-02-26 | 1987-09-01 | Liebherr-Werk Telfs Ges. M.B.H. | Tracklaying undercarriage for bulldozer, crawler loaders or other tracklaying vehicles |
US20160201394A1 (en) * | 2013-08-27 | 2016-07-14 | Bauer Spezialtiefbau Gmbh | Earth working apparatus and method for earth working |
CN110282042A (en) * | 2019-08-06 | 2019-09-27 | 山东国兴智能科技股份有限公司 | A kind of high performance self-adaption crawler body device and working method |
CN114940222A (en) * | 2022-06-10 | 2022-08-26 | 华南农业大学 | Light caterpillar chassis with slope self-adaptive adjustment |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4681177A (en) * | 1985-12-09 | 1987-07-21 | Caterpillar Inc. | Method and apparatus for tensioning frictionally driven, ground engaging belts |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE321146C (en) * | 1919-06-11 | 1920-05-21 | Heinrich Lanz Fa | Tracked vehicle |
US2065509A (en) * | 1934-10-23 | 1936-12-29 | Bell William Crawford | Piston and connecting rod construction |
US2828137A (en) * | 1957-08-21 | 1958-03-25 | Ingersoll Rand Co | Rock drill supporting carriage |
US2936841A (en) * | 1958-06-16 | 1960-05-17 | Gen Motors Corp | Tractor suspension having resiliently mounted equalizer bar |
US2988159A (en) * | 1959-05-04 | 1961-06-13 | Eimco Corp | Universal trunnion mounting for equalizer member of a material handling machine |
-
1964
- 1964-02-21 US US346500A patent/US3225849A/en not_active Expired - Lifetime
-
1965
- 1965-02-05 GB GB5064/65A patent/GB1036394A/en not_active Expired
- 1965-02-19 FR FR6388A patent/FR1425051A/en not_active Expired
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE321146C (en) * | 1919-06-11 | 1920-05-21 | Heinrich Lanz Fa | Tracked vehicle |
US2065509A (en) * | 1934-10-23 | 1936-12-29 | Bell William Crawford | Piston and connecting rod construction |
US2828137A (en) * | 1957-08-21 | 1958-03-25 | Ingersoll Rand Co | Rock drill supporting carriage |
US2936841A (en) * | 1958-06-16 | 1960-05-17 | Gen Motors Corp | Tractor suspension having resiliently mounted equalizer bar |
US2988159A (en) * | 1959-05-04 | 1961-06-13 | Eimco Corp | Universal trunnion mounting for equalizer member of a material handling machine |
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3478832A (en) * | 1967-10-27 | 1969-11-18 | Ingersoll Rand Co | Crawler mounted rock drill |
US3980149A (en) * | 1975-05-12 | 1976-09-14 | Caterpillar Tractor Co. | Stress-relieved axle mounting for track-type vehicles |
US4086974A (en) * | 1975-10-28 | 1978-05-02 | Poclain | Chassis for vehicle |
DE2725042A1 (en) * | 1976-06-04 | 1977-12-15 | Atlas Copco Ab | Mobile drilling rig alignment system - includes winding gear and struts for raising end of vehicle alongside vertical mast |
US4181182A (en) * | 1977-06-21 | 1980-01-01 | Atlas Copco Ab | Wagon having incorporated support jacks |
EP0110175A3 (en) * | 1982-11-29 | 1986-08-27 | Deere & Company | Junction bracket between a track carriage and an equalizer bar of a tractor |
EP0110175A2 (en) * | 1982-11-29 | 1984-06-13 | Deere & Company | Junction bracket between a track carriage and an equalizer bar of a tractor |
US4690231A (en) * | 1985-02-26 | 1987-09-01 | Liebherr-Werk Telfs Ges. M.B.H. | Tracklaying undercarriage for bulldozer, crawler loaders or other tracklaying vehicles |
US20160201394A1 (en) * | 2013-08-27 | 2016-07-14 | Bauer Spezialtiefbau Gmbh | Earth working apparatus and method for earth working |
US9790742B2 (en) * | 2013-08-27 | 2017-10-17 | Bauer Spezialtiefbau Gmbh | Drilling apparatus and method for drilling |
CN110282042A (en) * | 2019-08-06 | 2019-09-27 | 山东国兴智能科技股份有限公司 | A kind of high performance self-adaption crawler body device and working method |
CN110282042B (en) * | 2019-08-06 | 2024-03-22 | 山东国兴智能科技股份有限公司 | High-performance self-adaptive crawler chassis device and working method |
CN114940222A (en) * | 2022-06-10 | 2022-08-26 | 华南农业大学 | Light caterpillar chassis with slope self-adaptive adjustment |
Also Published As
Publication number | Publication date |
---|---|
FR1425051A (en) | 1966-01-14 |
GB1036394A (en) | 1966-07-20 |
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