US2665116A

US2665116A - Posthole boring machine

Info

Publication number: US2665116A
Application number: US212976A
Authority: US
Inventors: Brink Frank; John E Star
Original assignee: Individual
Current assignee: Individual
Priority date: 1951-02-27
Filing date: 1951-02-27
Publication date: 1954-01-05
Anticipated expiration: 1971-01-05

Description

6 Sheets-Sheet l Jan. 5, 1954 F. BRINK ET A1.

POSTHOLE BORING MACHINE Filed Feb. 27, 1951 Jan. 5, 1954 F. BRINK ET AL POSTHOLE BORING MACHINE 6 Sheets-Sheet 2 Filed Feb. 27 1951 ATTD RN EYS Jan. 5, 1954 F. BRINK ET AL 2,665,116

POSTHOLE BORING MACHINE Filed Feb. 27 1951 6 Sheets-Sheet 3 132 .137 i jga i l I l x., Y f |1I EN m IN VEN TOR.

ATTDRNEYS Jan. 5, 1954 r-'. BRINK ET AL POSTHOLE BORING MACHINE 6 Sheets-Sheet 4 Filed Feb. 27, 1951 4 5f l lh l l Y 3 lllll.. I i 95546 L Jf INVENTOR.

ATTRNYS Jan. 5, 1954 F. BRINK ET AL 2,665,116

POSTI-IDLE BORING MACHINE Filed Feb. 27, 1951 6 Sheets-Sheet 5 QT? y y 7.9 Vf .f1

INVENTOR. I QSZQ'I",

Ware/f' fafa@ ATTRN EYE Jan. 5, 1954 F! BRINK ET AL 2,665,116

` POSTHOLE BORING MACHINE Filed Feb. 27, 1951 495 197.10 1N VENTOR. J0?

ATTRNEYS Patented Jan. 5, 1954 ilptllt 2 Claims.

rlhis invention relates to earth boring tools of the type used on truck platforms for boring holes for telephone poles, posts, and the like, and in particular` a machine having a base with a derrick-like superstructure designed to he mounted on the platform of a truck or the like with a boring shaft journaled in the derrick frame and having an auger on the lower end, and the invention also includes means for adjusting the auger carrying shaft to a vertical position or to dierent positions in a plane extended longitudiw nally through the truck body and also to different positions in a plane extended transversely or the truck body.

The purpose of this invention is to provide a post hole auger wherein the auger and the shaft on which the auger is carried may readily be adjusted to different positions in relation to a truck or other carrying vehicle whereby the axis of the auger and shaft is vertical even though the vehicle may he positioned on the side of a hill extendedupwardly from the side ci a roadway, or on a grade or slope of substantially any angle.

Various types of earth boring machines have been provided for boring holes at different angles and whereas the axis of the boring shaft of conventional machines of this type is adjustable in a plane extended longitudinally through a carrying vehicle it is difficult to adjust the aXis to a vertical position when it is desired to bore a hole on the side of a hill or embankment extended upwardly from a roadway. With this thought in mind this invention contemplates a universal mounting of a post hole boring tool whereby the axis o the boring tool shaft may be adjusted to a vertical position regardless of the position oi the truck body 'on which the device is mounted.

The object of this invention is, therefore, to provide means for constructing an earth boring tool mounting whereby the axis of the motor shaft is adjustable both longitudinally and transversely.

Another object of the invention is to provide an adjustable mounting for earth boring tools that may readily be mounted on a platform of a truck with the drive shaft thereof connected to the power take oi of the truck.

Another object of the invention is to provide a post hole boring tool that may readily be mounted upon a truck platform in which the tool may readily be adjusted to a position with the auger suspended above the ground for transportation.

Another object of the invention is to provide a post hole boring tool in which the boring tool shaft is journaled in an upwardly extended der- Cil rick frame and wherein the device may also be used for withdrawing telephone poles, posts and the like from holes.

A further object of the invention is to provide an improved post hole boring machine which is of a simple and economical construction.

Vith these and other objects and advantages in view the invention embodies a derricl: superstructure mounted on a gear housing with a boring tool shaft journaled in the superstructure and extended through the gear housing and with the superstructure and housing carried by a base mounted on the platform of a truck body with means for actuating the auger and also means for adjusting the position of the auger carrying shaft longitudinally and transversely of the truck body.

Other features and advantages of the invention will appear from the following description taken in connection with the drawings wherein:

Figure 1 is a side elevational View illustrating the improved post hole boring tool mounted on a truck with the structure in an inclined position on the truck in which position the tool may readily be conveyed from one position to another.

Figure 2 is a similar View showing the rear portion of the truck with the tool shown in a vertical position in full lines and in an inclined position in dotted lines and also showing an auger of a smaller size on the shaft of the tool in the dotted line position.

Figure 3 is a rear elevational View showing the truck on an incline with the boring tool vertically positioned.

Figure 4 is a similar view showing the tool in a vertical position with the truck on an oppositely sloping incline.

Figure 5 is a side elevational view also similar to that shown in Figure l showing the tool ad justed to a different angle and illustrated with the truck platform removed.

Figure 6 is a detail showing a transverse section through the mounting element shown in Fign ure 5 illustrating supporting jacks attached to side bars of the base.

Figure 7 is a side elevational view, on an enlarged scale illustrating the gear housing with the hydraulic control valves mounted on the side thereof and with the superstructure, truck body and boring tool shaft broken away.

Figure 8 isa sectional plan taken on line E-S of Figure 7 showing the interior of the gear houslng.

Figure 9 is a vertical longitudinal section through the gear housing showing the auger shaft in a vertical position.

Figure is a cross section through the clutch housing taken on line Ill-l@ of Figure 9.

Figure 11 is also a cross section through the clutch housing taken on line II-II of Figure 9.

Figure 12 is a cross section taken on line |2-I2 of Figure 2 showing the base mounted on the platform of the truck body.

Figure 13 is a sectional plan showing the mounting base with the base positioned on the platform of the truck body.

Figure 14 is a detail illustrating an attachment of one of the side rails of the base to the truck body being taken on line Ill-I4 of Figure 13.

Figure 15 is a sectional plan illustrating vthe attachment shown in Figure lll.

Figure 1S is a vertical section through the upper part of the auger carrying shaft illustrat ing the piston and cylinders therein whereby pressure is applied to the upper end of the auger shaft.

Figure 17 is a diagrammatic view illustrating a hydraulic valve for controlling the adjusting cylinders and also the auger carrying shaft cylinder.

Figure 18 is a detail illustrating a swivel connection used between the ends of the cylinders and superstructure in which the auger carrying shaft is mounted.

Referring now to the drawings wherein like reference characters denote 4corresponding parts the post hole boring tool or digger of this invention includes a tubular drill bit carrying rod I0, a drill rod housing II in which the rod is journaled and through which the rod extends, a superstructure I2 mounted on the housing I l and providing supporting means for the upper end of the drill rod, a clutch |3 in a clutch housing I4 that is mounted on the housing II, a piston I5 positioned in the drill rod and through which iluid under pressure is forced to feed a drill bit i6 on the drill rod I il downwardly, a hydraulic cylinder I1 for tilting the drill rod in a longitudinal plane, a hydraulic cylinder AI8 for tilting the drill rod in a transversely disposed plane, and a pump I9 by which uid under pressure is supplied to the drill rod and cylinders through suitable valves.

rEhe drill rod IU is slidably mounted in the housing through an elongated bearing sleeve 20 that is provided with elongated grooves 2| into which splines 22 on the surface of the drill rod extend, as shown in Figure 8 and the opposite ends of the sleeve are journaled in roller thrust bearings 23 and 2d, as shown in Figure 9. The

ends of the sleeve 20 extend through packing glands 25 and 2li formed by langed

bushings

21 and 28, respectively which extend into hubs 29 and 3i] on the upper and lower panels of the housing II, and which are held by bolts 3| and 32, respectively.

The sleeve 29 is provided with a bevel gear 33 that is secured to a ange 34 thereon by bolts 35 and the gear 33 meshes with a beveled pinion 36 on a stub shaft 31 that extends from the clutch I3.

The stub shaft 31 is journaled in bearings 38 and 39 in a cylinder 4B of an inner Wall 4| of the housing II and the shaft is also provided with roller thrust bearings 42 and 43.

The end of the cylinder 4G that extends into the clutch housing I4 is journaled in a bearing 44 which is supported from the outer wall of the housing by arms 45.

A driving shaft 4e extends from the opposite end of the clutch and this shaft is journaled in a 4 bearing 41. The clutch collar 48 is slidably mounted on the shaft 46 and the collar is actuated by a yoke 49 that is pivotally mounted on an arm 5|] extended from the bearing 41 by a pin 5|.

The outer end of the shaft 45 is provided with a section 52 of a universal joint, a complementary section 53 of which is carried by the end 54 of a telescoping shaft 55. The shaft 55 is connected to a driving shaft 58 through another universal joint 51 and the shaft 5G isconnected to a coupling 58 through a power and take oi shaft 59 of a truck upon which the well boring tool is mounted.

The 'sha-ft 56 extends through a frame 60 in which the shaft is journaled in bearings 6| and 52 and the frame is also provided with a countershaft 63 that is journaled in

bearings

64 and 65 and vthe countershaft is driven from the shaft 56 by a chain 65 which is trained over

sprockets

61 and 68. The sprocket 61 is provided with a jaw clutch 63 and the jaw clutch is actuated by a shift lever 19 through a yoke 1| and clutch collar 12. The countershat 53 extends through a beam 13 on which the Dump IS is mounted and the shaft extends through pumps providing means for operating the same.

The beam 13, and also a beam 1li provide mounting means for the shaft 55 and frame 60 and these beams are carried by parallel rails 15 and '16, which are channel-shaped in cross section and which are mounted on a platform 11 of a truck bod-y by tongues 18 and 19 that extend upwardly from a base plate These parts are secured to the platform 11 by bolts 8| and 82, as illustrated in Figure 14.

The bearing 44 in which the end of the cylinderl 4D of the gear housing II that extends into the clutch housing I4 is journaled, as shown in Figure 9, is supported by transversely disposed arms 83 and E4, the outer ends of which are provided with trunnions G5 and 3E and the trunnions are journaled in

bearings

81 and 88, respectively on extended ends of the side rails '5 and 16 of the supporting frame that is bolted to the platform 11.

The bearing 44 is secured on the end of the cylinder 46 by a collar 89 that is secured in posi-I tion by a set screw 9G and the bearing 41 is supported in the housing by vertically disposed rods 9| and 92.

The clutch yoke actuating shaft 5| of the collar 43 of the clutch I3 is journaled in the housing I4 in

bearings

93 and 94 and an arm 95 on the outer end of the shaft is actuated by a hand lever 96 which is pivotally mounted on a pin 91 and which is provided with an arm 98 that is connected to the end 99 of the lever 95 by a link Illa. A spring lill is connected, at one end to the end 99 of the lever and, at the opposite end to an eye |02 on a clip |03 of the valve housing |34 on the side of the gear housing I I.

The

side rails

15 and 16 of the mounting frame are provided with cylindrical sockets |05 and |06 that are positioned to receive the upper ends of tubular telescoping members |01 and |58 of jacks I 09 and l0, as illustrated in Figure 6. The jacks are provided with intermediate sleeves III and II2 in which pins ||3 and |I4, respectively, are inserted. The members |01 and |08 are provided with stops I|5 and IIB respectively upon which the sockets |05 and |06 rest to provide means for supporting a mounting frame independent of the truck body with the parts in the position illustrated in Figure 5 wherein the drill bit coacts with the jacks to provide three points of support.

The trunion arm 83 is provided with a bearing which, with .a bearing section ||8 provides a swivel joint for a piston rod I I9 extended from the hydraulic cylinder I8, the upper end of which is attached to a mounting bracket |29 on the side of the superstructure I2 whereby the superstructure and drill rod are tilted in a transversely disposed plane, as illustrated in Figures 3 and 4 upon expansion and contraction of the cylinder |B. The upper end of the cylinder E8 is connected to the bracket with a swivel connection |2I.

The upper end of the hydraulic cylinder |'I is also connected to the superstructure i2 through a bracket |22 with the upper end of the cylinder connected to the bracket by a universal joint I 23 and with the lower end of a piston rod |25, ein tended from the lower end of the cylinder, con nected to the cross beam 13 of the mounting frame by a universal joint |25.

The cylinder |29 is also provided with an inner tubular member |35 that is provided with a duid supply connection |31 at the upper end and also with an outlet connection |38 at the lower end, the said outlet connection extends through the wall of the cylinder |23 whereby iiuid is supplied to the cylinder |26 on the opposite side of the piston I5.

The upper end of the drill rod is provided with a packing gland |58 that is formed with a sleeve |59 which extends into the upper end of the gland and which is secured in position by bolts |59 that are carried in flanges |5| that extend through nanges |52. The bolts are provided with nuts |53 by which the sleeve of the packing gl-and may be adjusted.

The valves |55, |55 and |55 are controlled by hand levers I 54, |85 and |85 which are pivotally mounted in the valve housing by pins |81, |38 and |89 and similarly connected to the valve core by pins |99, |9| and |92, respectively.

By this means the position of the drill rod and superstructure are positively controlled by the hy draulic cylinders and the cylinders are controlled by the hand levers so that the drill rod and supporting structure may be positioned so that the dril1 rod is vertical regardless of the position of the body of a truck upon which the device is mounted and the device may be used for verticaily disposed post holes, particulariy as shown in full lines in Figure 2, or holes for anchors, which are preferably positioned at an angie or 45 degrees. It will also be understood that the parts are adjustable to bore holes at suitable angles in a longitudinal plane and also in a transverse plane so that a post hole or hole for an anchor may be bored in the side or a bank `at an angle of l5 ldegrees or at 4any suitable angle.

Superstructure and drill rods may also be adjusted to a position, such as illustrated in Figure l, with the superstructure supported on a post |93 on the forward end of the mounting frame and having a fork |94 on the upper end that is positioned to receive the superstructure.

It will also be understood that the device may be provided with means for withdrawing posts from holes and for this purpose a winch |95 is mounted on the platform of the truck and a cable |96, having a hook |91 on the outer end, extends around a pulley |98 which is journaled in the bracket |22 and also over a pulley |99 that is journaled on a pin 293 between the parts |32 and |33 in the upper end of the superstructure.

It will be understood that the swivel connections particularly between the ends of the hydraulic cylinders and piston rods thereof may be formed in any suitable manner. A typical universal or swivel connection is illustrated in Figure 18 wherein the lower end of the piston rod |24 is connected to the joint |25 by a bolt 200 and the member |25 is pivotally mounted on a bolt 20| which extends to the lower or base section of the joint.

With the shaft 59 connected to the power take off of a truck, tractor, or the like the drill rod is rotated through the mounting or bearing sleeve 20 with the

gears

38 and 36 and through the clutch I3. As the drill rod is rotated the valve |56 is actuated so that iiuid under pressure passes downwardly through the chamber |29 of the cylinder |28 and is discharged through the lower end of the stem |27. With the piston l iixed longitudinally by the stem |21 and cylinder |28 the pressure in the cylinder |28 forces the drill rod I0 downwardly as it is rotated. With the drill rod passing downwardly iluid in the upper part of the cylinder |28 above the piston I5 passes through the tube |36 and back to the pump or source of iiuid supply.

By actuating the valve |54 the cylinder may be expanded or contracted to adjust the position of the drill rod and superstructure whereby the rod may be moved from the position shown in full lines in Figure 2, to the position shown in dotted lines, or to the position illustrated in Figure 1 where the drill bit is suspended above the ground for transportation.

By the same means the valve |55 may be actuated to expand or contract the hydraulic cylinder I8 and by this means the drill rod and superstructure may be rotated in a plane positioned transversely of the truck body so that the angle of an opening formed by the drill bit may conform to the slope of the ground and the hole may extend at any suitable angle in relation to the ground.

It will be noted that as the position of the drill rod is adjusted in a transverse plane in relation to the body of the truck the arms 83 and 84 travel in

slots

204 and 205 in the sides of the section I4 of the housing and these arms are slidably mounted between

angles

206 and 201 on one side and 208 and 209 on the other.

It will also be noted in Figures l2 and 13 that the boring structure is slidably mounted by the beams 13 and 'M which are mounted on the rails '|5 and '68 and the rails are slidably mounted on the

tongues

18 and 79 whereby the device may readily be removed from the truck body.

front, rear and side walls and havingl vertically disposed slots in the side walls thereof, a support bearing mounted in the housing and having arms extending outwardly of the housing through the slots in the side walls of the housing, means journalling the outer ends of the arms on said mounting frame, said arms pivotally supporting the drill rod housing on the frame to swivel in a transversely disposed plane in relation to the mounting frame by means of the support mounted within the housing, a clutch, mounted in said drill rod housing, an upwardly extended superstructure mounted on the upper side of said drill rod housing, a drill rod having a longitudinally disposed cylinder therein extended through the said drill rod housing and superstructure and having a drill bit on the lower end, power driving means mounted on the said mounting frame and connected through universal joints to the said drill rod housing, means in the said drill rod housing for rotating the drill rod, a piston positioned in the cylinder of the drill rod and having a piston rod the outer end of which is anchored in the upper end of the superstructure, a hydraulic cylinder mounted through universal joints on the mounting frame and superstructure, respectively, and positioned to rotate the said drill rod and superstructure in a plane extended longitudinally through the said mounting frame, a hydraulic cylinder also mounted through universal joints on the superstructure, and positioned to rotate the said superstructure and drill rod in a plane transversely positioned in relation to the said mounting frame, and means applying fluid under pressure to the said hydraulic cylinders and also to the cylinder of the drill rod.

2. A post hole boring tool as in claim 1 wherein a pump is mounted on the said mounting frame, a valve housing having valves therein, and suitable connections from the pump to the valve housing and from the valve housing to the hydraulic -cylinders for adjusting the position of the drill rod and superstructure and also to the cylinder in the said drill rod for actuating the said drill rod.

FRANK BRINK. JOHN E. STAR.

References Cited in the le of this patent UNITED STATES PATENTS Number Name Date 1,238,388 Burnton Aug. 28, 1917 1,548,559 Simpson Aug. 4, 1925 1,921,812 Erdahl Aug. 8, 1933 2,410,959 Brown Nov. 12, 1946 2,415,572 Jaques Feb. 11, 1947 2,418,601 Richards Apr. 8, 1947 2,421,970 Smith June 10, 1947 2,480,537 Arps et al. Aug. 30, 1949 2,587,893 Pridy et al. Mar. 4, 1952